CN119738942B - Panoramic annular lens and imaging system - Google Patents
Panoramic annular lens and imaging systemInfo
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- CN119738942B CN119738942B CN202510151260.7A CN202510151260A CN119738942B CN 119738942 B CN119738942 B CN 119738942B CN 202510151260 A CN202510151260 A CN 202510151260A CN 119738942 B CN119738942 B CN 119738942B
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- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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Abstract
本申请公开了一种全景环带镜头及成像系统。全景环带镜头包括：从物方侧向像方侧排列的全景环带头部单元和后继透镜组。其中，所述全景环带头部单元包括从物方侧到像方侧依次排列的第一透镜和第二透镜，其中所述第一透镜为具有正光焦度的弯月型透镜，第二透镜为具有正光焦度的双凸透镜；第一透镜的凸面朝向物方侧，凹面朝向像方侧；所述后继透镜组包括从物方侧到像方侧依次排列的第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜，其中第三透镜至第八透镜中的透镜形成至少一组胶合透镜组。
The present application discloses a panoramic ring-shaped lens and an imaging system. The panoramic ring-shaped lens includes: a panoramic ring-shaped head unit and a subsequent lens group arranged from the object side to the image side. The panoramic ring-shaped head unit includes a first lens and a second lens arranged in sequence from the object side to the image side, wherein the first lens is a meniscus lens with positive optical power, and the second lens is a biconvex lens with positive optical power; the convex surface of the first lens faces the object side, and the concave surface faces the image side; the subsequent lens group includes a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens arranged in sequence from the object side to the image side, wherein the lenses from the third lens to the eighth lens form at least one cemented lens group.
Description
Technical Field
The application relates to the technical field of optics, in particular to a panoramic annular lens and an imaging system.
Background
The panoramic annular imaging system is required to complete imaging of an object in an oversized view field range onto an image sensor with a limited image surface through geometric transformation at one time, and an annular area image with the oversized view field is obtained.
Where the half field angle is an important performance indicator of panoramic annular imaging systems. In the field of monitoring, a larger field angle allows the camera to cover a larger area, blind spots are reduced, and safety is improved. In virtual reality applications, a larger field of view provides a wider field of view, enhancing immersion, and allowing the user to feel in the virtual environment. In an autonomous vehicle, a larger field of view can provide a wider range of panoramic views around the vehicle, helping the vehicle detect obstacles and pedestrians, and improving driving safety.
Overall, the greater field of view increases the practicality and efficiency of the panoramic annular imaging system, making it more advantageous in a variety of application scenarios. Compared with the existing structure, the panoramic annular lens and imaging system provided by the application have the advantages of more compact structural design, more excellent stray light control and more excellent processability, and can further increase the field angle of annular imaging.
Disclosure of Invention
The present disclosure provides a panoramic annular lens and imaging system to further increase the maximum field angle of annular imaging while ensuring a sufficient field angle range.
According to one aspect of the present application, there is provided a panoramic zone lens including a panoramic zone head unit and a subsequent lens group arranged from an object side to an image side. The panoramic girdle head unit comprises a first lens and a second lens which are sequentially arranged from an object side to an image side, wherein the first lens is a meniscus lens with positive focal power, the second lens is a biconvex lens with positive focal power, the convex surface of the first lens faces the object side, and the concave surface of the first lens faces the image side. The subsequent lens group includes a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, which are arranged in order from the object side to the image side. Wherein the lenses of the third lens to the eighth lens form at least one cemented lens group.
According to another aspect of the present application, there is provided a panoramic annular belt imaging system including the above panoramic annular belt lens and an image sensor, wherein the image sensor is located on an image side of the panoramic annular belt lens.
Therefore, the panoramic annular lens provided by the application can ensure that a panoramic annular imaging system using the panoramic annular lens has more compact structural design, more excellent stray light control and more excellent processability, and has a larger field angle.
The above, as well as additional objectives, advantages, and features of the present application will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present application when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is an optical block diagram of a panoramic annular belt imaging system as described in embodiment 1;
FIG. 2 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 1;
FIG. 3 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 1;
FIG. 4 is a standard point plot of the panoramic annular belt imaging system described in example 1 at visible light 486-656 nm;
FIG. 5 is a graph of distortion of the panoramic annular imaging system of example 1 at visible light 486-656 nm;
FIG. 6 is a graph of the optical path difference of the panoramic annular imaging system of example 1 at 486-656nm of visible light;
FIG. 7 is a color difference plot of magnification of the panoramic annular imaging system of example 1 at visible light 486-656 nm;
FIG. 8 is a graph of the relative illuminance of example 1 at 486-656nm of visible light;
FIG. 9 is an optical block diagram of a panoramic annular belt imaging system as described in example 2;
FIG. 10 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 2;
FIG. 11 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 2;
FIG. 12 is a standard point plot of the panoramic annular belt imaging system of example 2 at visible light 486-656 nm;
FIG. 13 is a graph of distortion of the panoramic annular imaging system of example 2 at visible light 486-656 nm;
FIG. 14 is a graph of the optical path difference of the panoramic annular imaging system of example 2 at 486-656nm of visible light;
FIG. 15 is a color difference plot of magnification of the panoramic annular imaging system of example 2 at visible light 486-656 nm;
FIG. 16 is a graph of the relative illuminance of example 2 at 486-656nm of visible light;
FIG. 17 is an optical block diagram of a panoramic annular belt imaging system as described in example 3;
FIG. 18 is a graph showing the marks of the respective surfaces along the optical path direction in the panoramic annular imaging system described in example 3;
FIG. 19 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 3;
FIG. 20 is a standard point plot of the panoramic annular belt imaging system of example 3 at visible light 486-656 nm;
FIG. 21 is a graph of distortion of the panoramic annular imaging system of example 3 at visible light 486-656 nm;
FIG. 22 is a graph of the optical path difference of the panoramic annular imaging system of example 3 at 486-656nm of visible light;
FIG. 23 is a color chart of magnification of the panoramic annular imaging system of example 3 at 486-656nm of visible light;
FIG. 24 is a graph of the relative illuminance of example 3 at 486-656 nm;
FIG. 25 is an optical block diagram of a panoramic annular belt imaging system as described in example 4;
FIG. 26 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system described in example 4;
FIG. 27 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 4;
FIG. 28 is a standard point plot of the panoramic annular belt imaging system of example 4 at visible light 486-656 nm;
FIG. 29 is a graph of distortion of the panoramic annular imaging system of example 4 at visible light 486-656 nm;
FIG. 30 is a plot of the optical path difference of the panoramic annular imaging system of example 4 at 486-656nm of visible light;
FIG. 31 is a color chart of magnification of the panoramic annular imaging system of example 4 at 486-656nm of visible light;
FIG. 32 is a graph of the relative illuminance of example 4 at 486-656 nm;
FIG. 33 is an optical block diagram of a snapshot panoramic zone imaging system as described in example 5;
FIG. 34 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 5;
FIG. 35 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 5;
FIG. 36 is a snapshot of a standard point plot of the panoramic annular imaging system of example 5 at visible light 486-656 nm;
FIG. 37 is a distortion plot of the panoramic annular imaging system of example 5 at visible light 486-656 nm;
FIG. 38 is a chart of the optical path difference of the panoramic annular imaging system of example 5 at 486-656nm of visible light;
FIG. 39 is a color chart of magnification of the panoramic annular imaging system of example 5 at 486-656nm of visible light;
FIG. 40 is a graph of the relative illuminance of example 5 at visible 486-656 nm;
FIG. 41 is an optical block diagram of a panoramic annular belt imaging system as described in example 6;
FIG. 42 is a graph showing the marks of the respective surfaces along the optical path direction in the panoramic annular imaging system described in example 6;
FIG. 43 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 6;
FIG. 44 is a standard point plot of the panoramic annular belt imaging system of example 6 at visible light 486-656 nm;
FIG. 45 is a distortion plot of the panoramic annular imaging system of example 6 at visible light 486-656 nm;
FIG. 46 is a chart of the optical path difference of the panoramic annular imaging system of example 6 at 486-656nm of visible light;
FIG. 47 is a color chart of magnification of the panoramic annular imaging system of example 6 at 486-656nm of visible light;
FIG. 48 is a graph of the relative illuminance of example 6 at 486-656 nm;
FIG. 49 is an optical block diagram of a panoramic annular belt imaging system as described in example 7;
FIG. 50 is a graph of the markings of the various surfaces along the optical path direction of the optical path snapshot in the panoramic annular imaging system of example 7;
FIG. 51 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 7;
FIG. 52 is a standard point plot of the panoramic annular belt imaging system of example 7 at visible light 486-656 nm;
FIG. 53 is a graph of distortion of the panoramic annular imaging system of example 7 at visible light 486-656 nm;
FIG. 54 is a plot of the optical path difference of the snapshot panoramic annular imaging system of example 7 at visible light 486-656 nm;
FIG. 55 is a color chart of magnification of the panoramic annular imaging system of example 7 at 486-656nm of visible light;
FIG. 56 is a graph of the relative illuminance of example 7 at visible 486-656 nm;
FIG. 57 is an optical block diagram of a panoramic annular belt imaging system as described in example 8;
FIG. 58 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 8;
FIG. 59 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 8;
FIG. 60 is a standard point plot of the panoramic annular belt imaging system of example 8 at visible light 486-656 nm;
FIG. 61 is a graph of distortion of the panoramic annular imaging system of example 8 at visible light 486-656 nm;
FIG. 62 is a graph of the optical path difference of the panoramic annular imaging system of example 8 at 486-656nm of visible light;
FIG. 63 is a color difference plot of magnification of the panoramic annular imaging system of example 8 at visible light 486-656 nm;
FIG. 64 is a graph of the relative illuminance of example 8 at 486-656 nm;
FIG. 65 is a snapshot optical block diagram of a panoramic annular belt imaging system as described in example 9;
FIG. 66 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 9;
FIG. 67 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 9;
FIG. 68 is a standard point plot of the panoramic annular belt imaging system of example 9 at visible light 486-656 nm;
FIG. 69 is a distortion plot of the panoramic annular imaging system of example 9 at visible light 486-656 nm;
FIG. 70 is a graph of the optical path difference of the panoramic annular imaging system of example 9 at 486-656nm of visible light;
FIG. 71 is a color chart of magnification of the panoramic annular imaging system of example 9 at 486-656nm of visible light;
FIG. 72 is a graph of the relative illuminance of example 9 at 486-656 nm;
FIG. 73 is an optical block diagram of a panoramic annular belt imaging system as described in embodiment 10;
FIG. 74 is a graph of the markings of the various surfaces along the direction of the optical path in the panoramic annular imaging system of example 10;
FIG. 75 is a graph of MTF at 486-656nm for a panoramic annular belt imaging system as described in example 10;
FIG. 76 is a standard point plot of the panoramic annular belt imaging system of example 10 at 486-656nm of visible light;
FIG. 77 is a distortion map of the panoramic annular imaging system of example 10 at visible light 486-656 nm;
FIG. 78 is a graph of the optical path difference of the snapshot panoramic annular imaging system of example 10 at visible light 486-656 nm;
FIG. 79 is a color difference plot of magnification of the panoramic annular imaging system of example 10 at visible light 486-656 nm;
FIG. 80 is a graph of the relative illuminance of example 10 at 486-656 nm.
Detailed Description
It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order that those skilled in the art will better understand the present disclosure, a technical solution in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure, shall fall within the scope of the present disclosure.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are, for example, capable of operation in connection with other embodiments. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Detailed Description
Specifically, fig. 1, 9, 17, 25, 33, 41, 49, 57, 65, and 73 respectively show schematic views of a panoramic annular imaging system according to embodiments 1 to 10. Wherein the panoramic annular imaging system includes a panoramic annular lens.
Referring to the above figures, according to a first aspect of the present application, there is provided a panoramic annular belt lens. The panorama zone lens includes a panorama zone head unit PAL and a subsequent lens group RL arranged from an object side to an image side.
The panoramic girdle head unit comprises a first lens PAL1 and a second lens PAL2 which are sequentially arranged from an object side to an image side, wherein the first lens PAL1 is a meniscus lens with positive focal power, the second lens PAL2 is a biconvex lens with positive focal power, the convex surface of the first lens PAL1 faces the object side, and the concave surface faces the image side. The subsequent lens group includes a third lens RL1, a fourth lens RL2, a fifth lens RL3, a sixth lens RL4, a seventh lens RL5, and an eighth lens RL6, which are arranged in order from the object side to the image side. Wherein lenses of the third lens RL1 to the eighth lens RL6 form at least one cemented lens group.
For example, referring to fig. 9, 17, 25, 33, 41, 49 and 57, in embodiments 1 to 8, the third lens RL1 and the fourth lens RL2 are cemented into one lens group, and the seventh lens RL5 and the eighth lens RL6 are cemented into one lens group.
As shown with reference to fig. 65, in embodiment 9, the third lens RL1 and the fourth lens RL2 are cemented into one lens group.
Referring to fig. 73, in embodiment 10, the third lens RL1 and the fourth lens RL2 are cemented into one lens group, and the seventh lens RL5 and the eighth lens RL6 are cemented into one lens group.
Therefore, the panoramic annular lens provided by the application can ensure that a panoramic annular imaging system using the panoramic annular lens has a larger field angle. Specifically, the minimum half field angle FOV min of the panoramic annular imaging system using the panoramic annular lens satisfies the condition 40 ° < FOV min <55 °.
Optionally, the total length TTL PAL of the panorama zone head unit PAL and the total length TTL RL of the subsequent lens group RL satisfy the conditional expression: Therefore, the total length of the subsequent lens group RL is effectively limited when the total length of the panoramic zone head unit PAL is fixed, and the total length of the whole lens is compressed, so that the panoramic zone optical lens is beneficial to miniaturization, light weight and low cost.
Optionally, the mechanical half-aperture D PAL1 of the first lens PAL1 and the total length TTL Successor lens group of the subsequent lens group of the panoramic annular lens satisfy the following conditional expression: Therefore, the aperture and the quality of the lens of the panoramic girdle head unit can be effectively limited by meeting the conditional expression, the fact that the center of gravity of the lens is too concentrated at the upper end is ensured, and the processing, the assembling and the structural stability of the lens are facilitated.
Optionally, the radius of curvature R A1 of the object-side surface of the first lens PAL1 and the radius of curvature R A2 of the image-side surface of the first lens PAL1 satisfy the following conditional expression: Therefore, the condition is satisfied, on one hand, the object side surface shape of the first lens PAL1 can be ensured to be in a relatively reasonable state, so that lens processing is more reliable and easier to realize, and on the other hand, the deflection degree of light rays entering the first lens PAL1 from the outside can be reduced, and the expansion of the field of view of an imaging system and the subsequent suppression of stray light are facilitated.
Optionally, the mechanical half-aperture D PAL1 of the first lens PAL1 and the mechanical half-aperture D PAL2 of the second lens PAL2 satisfy the following conditional expression: Therefore, the aperture collocation of the two lenses of the panoramic annular belt head unit can be in a reasonable range by meeting the conditional expression, so that the deflection of the light rays with large angles of view is facilitated, and meanwhile, the processability of the lenses is ensured.
Optionally, the radius of curvature R A2 of the object-side surface of the second lens (PAL 2) and the radius of curvature R A3 of the image-side surface of the second lens (PAL 2) satisfy the following conditional expression: Therefore, the bonding process of the first lens (PAL 1) and the second lens (PAL 2) can have higher yield by meeting the conditional expression, and meanwhile, the caliber of the second lens (PAL 2) can be controlled, so that the compactness of the structure is ensured.
Optionally, the inner diameter D A3 inner aperture of the image-side reflective annulus of the second lens (PAL 2) and the image-side projection aperture D A8 of said second lens (PAL 2) satisfy the conditional expression 0.30< D A3 inner aperture -DA8 <1.90. Therefore, the condition is satisfied, so that the second lens (PAL 2) can ensure that the reflective annular surface coating process of the image side has enough processing redundancy, the processing difficulty is reduced, and the transmission stray light possibly existing on the surface is controlled.
Referring additionally to fig. 1, 9, 17, 25, 33, 41, 49, 57, 65, 73, according to another aspect of the present application, a panoramic annular belt imaging system is provided. Which comprises a panoramic annular lens as defined in any one of the above and an image sensor SEN. Wherein the image sensor SEN is located on the image side of the panoramic annular lens.
Optionally, the minimum half field angle FOV min of the panoramic annular imaging system satisfies the condition 40 ° < FOV min <55 °. Further preferably, the maximum half field angle FOV max satisfies the condition 110 ° < FOV max <120 °. Therefore, under the condition that the condition formula is met, the maximum field angle of the annular zone imaging is further increased under the condition that the enough field angle range can be ensured, a larger object space observation range is provided for scene recognition service, and the observation efficiency of single imaging is further improved.
Optionally, half of the diagonal length of the effective pixel area on the imaging surface of the panoramic annular imaging system ImgH and the absolute value |f| of the effective focal length of the panoramic annular imaging system satisfy the following conditional expression: Therefore, on the premise of ensuring that imaging is clear, a larger object space range can be imaged on an image plane through the panoramic annular imaging system, the observation efficiency of single imaging is improved to a certain extent, and more effective object space information is provided.
Wherein, table 1 below shows the related data of the panoramic annular imaging system of examples 1-10:
TABLE 1
Example 1
Fig. 1 is an optical structure diagram of a panoramic belt imaging system according to example 1, fig. 2 is a graph of marks of surfaces along an optical path direction in the panoramic belt imaging system according to example 1, fig. 3 is a graph of MTF (Modulation Transfer Function ) of the panoramic belt imaging system according to example 1 at 486-656nm, fig. 4 is a graph of standard points of the panoramic belt imaging system according to example 1 at 486-656nm, fig. 5 is a graph of distortion of the panoramic belt imaging system according to example 1 at 486-656nm, fig. 6 is a graph of optical path difference of the panoramic belt imaging system according to example 1 at 486-656nm, fig. 7 is a graph of magnification chromatic aberration of the panoramic belt imaging system according to example 1 at 486-656nm, and fig. 8 is a graph of relative illuminance of example 1 at 486-656 nm.
Further, table 2 below shows parameters of respective optical surfaces of the panoramic annular imaging system described in embodiment 1:
TABLE 2
Example 2
Fig. 9 is an optical structure diagram of the panoramic belt imaging system according to example 2, fig. 10 is a graph of marks of respective surfaces along an optical path direction in the panoramic belt imaging system according to example 2, fig. 11 is an MTF graph of the panoramic belt imaging system according to example 2 under visible light 486-656nm, fig. 12 is a standard point chart of the panoramic belt imaging system according to example 2 under visible light 486-656nm, fig. 13 is a distortion chart of the panoramic belt imaging system according to example 2 under visible light 486-656nm, fig. 14 is a graph of an optical path difference of the panoramic belt imaging system according to example 2 under visible light 486-656nm, fig. 15 is a magnification chromatic aberration chart of the panoramic belt imaging system according to example 2 under visible light 486-656nm, and fig. 16 is a relative graph of example 2 under visible light 486-656 nm.
Example 3
Fig. 17 is an optical structure diagram of the panoramic belt imaging system in example 3, fig. 18 is a graph of marks of respective surfaces along an optical path direction in the panoramic belt imaging system in example 3, fig. 19 is an MTF graph of the panoramic belt imaging system in example 3 under visible light 486-656nm, fig. 20 is a standard point chart of the panoramic belt imaging system in example 3 under visible light 486-656nm, fig. 21 is a distortion chart of the panoramic belt imaging system in example 3 under visible light 486-656nm, fig. 22 is a graph of an optical path difference chart of the panoramic belt imaging system in example 3 under visible light 486-656nm, fig. 23 is a magnification chromatic aberration chart of the panoramic belt imaging system in example 3 under visible light 486-656nm, and fig. 24 is a relative graph of example 3 under visible light 486-656 nm.
Example 4
Fig. 25 is an optical structure diagram of the panoramic belt imaging system according to example 4, fig. 26 is a graph of marks of respective surfaces along an optical path direction in the panoramic belt imaging system according to example 4, fig. 27 is an MTF graph of the panoramic belt imaging system according to example 4 under visible light 486-656nm, fig. 28 is a standard point chart of the panoramic belt imaging system according to example 4 under visible light 486-656nm, fig. 29 is a distortion chart of the panoramic belt imaging system according to example 4 under visible light 486-656nm, fig. 30 is a graph of an optical path difference of the panoramic belt imaging system according to example 4 under visible light 486-656nm, fig. 31 is a magnification chromatic aberration chart of the panoramic belt imaging system according to example 4 under visible light 486-656nm, and fig. 32 is a relative graph of example 4 under visible light 486-656 nm.
Example 5
Fig. 33 is an optical structure diagram of the snapshot panoramic zone imaging system of example 5, fig. 34 is a graph of the marks of the respective surfaces of the panoramic zone imaging system of example 5 along the optical path direction, fig. 35 is an MTF graph of the panoramic zone imaging system of example 5 under the condition of visible light 486-656nm, fig. 36 is a standard point graph of the panoramic zone imaging system of example 5 under the condition of visible light 486-656nm, fig. 37 is a distortion graph of the panoramic zone imaging system of example 5 under the condition of visible light 486-656nm, fig. 38 is a graph of the optical path difference of the panoramic zone imaging system of example 5 under the condition of visible light 486-656nm, fig. 39 is a graph of the magnification chromatic aberration of the panoramic zone imaging system of example 5 under the condition of visible light 486-656nm, and fig. 40 is a graph of the relative illuminance of example 5 under the condition of visible light 486-656 nm.
Example 6
Fig. 41 is an optical structure diagram of the panoramic belt imaging system according to example 6, fig. 42 is a graph of marks of respective surfaces along an optical path direction in the panoramic belt imaging system according to example 6, fig. 43 is a graph of MTF of the panoramic belt imaging system according to example 6 at 486-656nm in visible light, fig. 44 is a graph of standard point of the panoramic belt imaging system according to example 6 at 486-656nm in visible light, fig. 45 is a graph of distortion of the panoramic belt imaging system according to example 6 at 486-656nm in visible light, fig. 46 is a graph of optical path difference of the panoramic belt imaging system according to example 6 at 486-656nm in visible light, fig. 47 is a graph of magnification chromatic aberration of the panoramic belt imaging system according to example 6 at 486-656nm in visible light, and fig. 48 is a graph of relative illuminance of example 6 at 486-656nm in visible light.
Example 7
Fig. 49 is an optical structure diagram of the panoramic belt imaging system according to example 7, fig. 50 is a graph of marks of respective surfaces of the panoramic belt imaging system according to example 7 along an optical path direction of the optical path snapshot, fig. 51 is an MTF graph of the panoramic belt imaging system according to example 7 under visible light 486-656nm, fig. 52 is a standard point chart of the panoramic belt imaging system according to example 7 under visible light 486-656nm, fig. 53 is a distortion chart of the panoramic belt imaging system according to example 7 under visible light 486-656nm, fig. 54 is a graph of an optical path difference of the panoramic belt imaging system according to example 7 snapshot under visible light 486-656nm, fig. 55 is a graph of a magnification chromatic aberration of the panoramic belt imaging system according to example 7 under visible light 486-656nm, and fig. 56 is a graph of a relative illuminance of example 7 under visible light 486-656 nm.
Example 8
Fig. 57 is an optical structure diagram of the panoramic belt imaging system according to example 8, fig. 58 is a graph of the marks of the respective surfaces along the optical path direction in the panoramic belt imaging system according to example 8, fig. 59 is a graph of MTF of the panoramic belt imaging system according to example 8 at 486-656nm in visible light, fig. 60 is a graph of the standard point of the panoramic belt imaging system according to example 8 at 486-656nm, fig. 61 is a graph of distortion of the panoramic belt imaging system according to example 8 at 486-656nm in visible light, fig. 62 is a graph of the optical path difference of the panoramic belt imaging system according to example 8 at 486-656nm, fig. 63 is a graph of magnification chromatic aberration of the panoramic belt imaging system according to example 8 at 486-656nm in visible light, and fig. 64 is a graph of the relative illuminance of example 8 at 486-656nm in visible light.
Example 9
Fig. 65 is a snapshot optical structure diagram of the panoramic belt imaging system according to example 9, fig. 66 is a graph of marks of respective surfaces along an optical path direction in the panoramic belt imaging system according to example 9, fig. 67 is an MTF graph of the panoramic belt imaging system according to example 9 under visible light 486-656nm, fig. 68 is a standard point chart of the panoramic belt imaging system according to example 9 under visible light 486-656nm, fig. 69 is a distortion chart of the panoramic belt imaging system according to example 9 under visible light 486-656nm, fig. 70 is a graph of an optical path difference of the panoramic belt imaging system according to example 9 under visible light 486-656nm, fig. 71 is a magnification chromatic aberration chart of the panoramic belt imaging system according to example 9 under visible light 486-656nm, and fig. 72 is a relative illuminance graph of example 9 under visible light 486-656 nm.
Table 3 below shows parameters of the panoramic annular imaging system described in example 9:
TABLE 3 Table 3
| Face number | Curvature half (mm) | Center thickness (mm) | Refractive index | Abbe number | Effective semi-caliber (mm) |
| A1 | 12.00~13.50 | 4.55 | 1.58~1.62 | 36~40 | 9.00~10.00 |
| A2 | 18.30~20.30 | 5.48 | 1.63~1.69 | 49~53 | 9.00~10.00 |
| A3 | -7.60~-6.80 | -5.48 | 1.0 | 5.50~6.30 | |
| A4 | 18.30~20.30 | -4.55 | 1.58~1.62 | 36~40 | 4.50~5.00 |
| A5 | 12.00~13.50 | 1.04 | 1.58~1.62 | 36~40 | 1.00~1.50 |
| A6 | -7.60~-6.80 | 3.51 | 1.0 | 1.50~2.00 | |
| A7 | 18.30~20.30 | 5.48 | 1.63~1.69 | 49~53 | 1.50~1.80 |
| A8 | -7.60~-6.80 | 2.48 | 1.40~1.60 | ||
| B1 | -2.80~-2.10 | 1.50 | 1.78~1.83 | 23~28 | 0.90~1.20 |
| B2 | 4.00~4.90 | 1.30 | 1.58~1.62 | 57~61 | 1.10~1.40 |
| B3 | -4.60~-3.80 | 0.55 | 1.20~1.60 | ||
| Stop | INFINITY | 0.54 | 1.20~1.60 | ||
| C1 | 18.00~23.00 | 1.72 | 1.83~1.87 | 28~32 | 1.40~1.80 |
| C2 | -9.10~-7.50 | 2.50 | 1.60~2.00 | ||
| D1 | 7.80~9.20 | 1.30 | 1.58~1.62 | 54~58 | 1.70~2.10 |
| D2 | -19.00~-16.00 | 0.55 | 1.60~2.00 | ||
| E1 | 2.50~3.50 | 0.93 | 1.70~1.76 | 53~57 | 1.40~1.80 |
| E2 | 11.00~14.00 | 0.56 | 1.30~1.60 | ||
| F1 | 110.00~127.00 | 0.54 | 1.89~1.95 | 19~23 | 1.00~1.30 |
| F2 | 1.40~2.00 | 3.09 | 0.80~1.20 | ||
| G1 | INFINITY | - | 1.10~1.30 |
Example 10
Fig. 73 is an optical structure diagram of the panoramic belt imaging system according to example 10, fig. 74 is a graph of the marks of the respective surfaces along the optical path direction in the panoramic belt imaging system according to example 10, fig. 75 is an MTF graph of the panoramic belt imaging system according to example 10 under the condition of 486-656nm in visible light, fig. 76 is a standard point chart of the panoramic belt imaging system according to example 10 under the condition of 486-656nm in visible light, fig. 77 is a distortion chart of the panoramic belt imaging system according to example 10 under the condition of 486-656nm in visible light, fig. 78 is a graph of the optical path difference of the snapshot panoramic belt imaging system according to example 10 under the condition of 486-656nm in visible light, fig. 79 is a graph of the panoramic belt imaging system according to example 10 under the condition of 486-656nm in magnification chromatic aberration in magnification, and fig. 80 is a graph of the relative illuminance of example 10 under the condition of 486-656nm in visible light.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the description of the present disclosure, it should be understood that the azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present disclosure and simplifying the description, and the azimuth terms do not indicate and imply that the apparatus or element to be referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (9)
1. A panoramic zone lens is characterized by comprising a panoramic zone head unit (PAL) and a subsequent lens group (RL) which are arranged from the object side to the image side,
The panoramic annular belt head unit is composed of a first lens (PAL 1) and a second lens (PAL 2) which are sequentially arranged from the object side to the image side, wherein the first lens (PAL 1) is a meniscus lens with positive optical power, the second lens (PAL 2) is a biconvex lens with positive optical power, the convex surface of the first lens (PAL 1) faces the object side, the concave surface faces the image side, and
The subsequent lens group is composed of a third lens (RL 1), a fourth lens (RL 2), a fifth lens (RL 3), a sixth lens (RL 4), a seventh lens (RL 5) and an eighth lens (RL 6) which are arranged in order from the object side to the image side, wherein lenses of the third lens (RL 1) to the eighth lens (RL 6) form at least one cemented lens group;
The inner diameter of the image-side reflective ring surface of the second lens (PAL 2) And an image-side projection aperture of the second lens (PAL 2)Meets the condition of 0.30<<1.90。
2. The panoramic zone lens of claim 1, wherein the overall length of the panoramic zone head unit (PAL)And the total length of the subsequent lens group (RL)The conditional expression is satisfied:
0.32< <0.79。
3. The panoramic zone lens of claim 1, wherein said first lens (PAL 1) has a mechanical semi-aperture And the total length of the subsequent lens group (RL)Meets the condition of 0.32< < 0.78。
4. The panoramic zone lens of claim 1, wherein the object-side radius of curvature of the first lens (PAL 1)And the radius of curvature of the image side of the first lens (PAL 1)Meets the condition of 0.39 < < 0.73。
5. The panoramic zone lens of claim 1, wherein said first lens (PAL 1) has a mechanical semi-apertureAnd the mechanical half-aperture of the second lens (PAL 2)Meets the condition that 1.30 < <2.49。
6. The panoramic zone lens of claim 1, wherein the object-side radius of curvature of the second lens (PAL 2)And the radius of curvature of the image side of the second lens (PAL 2)Meets the condition of 2.11 < < 4.78。
7. A panoramic annular imaging system comprising the panoramic annular lens of any one of claims 1-6 and an image Sensor (SEN), wherein said image Sensor (SEN) is located on the image side of said panoramic annular lens.
8. The panoramic annular imaging system of claim 7 wherein a minimum half field angle of said panoramic annular imaging systemMeets the condition that 40 degrees are less than < 55°。
9. The panoramic annular imaging system of claim 7 wherein said panoramic annular imaging system has an active pixel area on an imaging surface that is half of a diagonal lengthAnd an absolute value of an effective focal length of the panoramic annular imaging systemThe conditional expression is satisfied:> 1.8。
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| KR101544792B1 (en) * | 2014-12-30 | 2015-08-18 | 주식회사 세코닉스 | Iris lens system |
| CN218630330U (en) * | 2022-09-28 | 2023-03-14 | 苏州马谷光学有限公司 | Panorama high definition camera lens |
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| JP5025354B2 (en) * | 2007-07-09 | 2012-09-12 | オリンパス株式会社 | Optical element, optical system including the same, and endoscope using the same |
| KR101436232B1 (en) * | 2013-01-21 | 2014-08-29 | 이선구 | Optical Lens System and Imaging Device Using the Same. |
| KR101439411B1 (en) * | 2014-01-23 | 2014-09-11 | 이선구 | Omnidirectional lens module |
| WO2020262488A1 (en) * | 2019-06-24 | 2020-12-30 | 日本電産サンキョー株式会社 | Wide-angle lens |
| CN110568584B (en) * | 2019-08-28 | 2020-08-11 | 浙江大学 | 4K high-resolution panoramic annular belt optical system |
| CN116801107B (en) * | 2023-07-12 | 2025-11-28 | 浙江大学 | Large-view-field panoramic imaging system based on multiplexing reflecting surface |
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| KR101544792B1 (en) * | 2014-12-30 | 2015-08-18 | 주식회사 세코닉스 | Iris lens system |
| CN218630330U (en) * | 2022-09-28 | 2023-03-14 | 苏州马谷光学有限公司 | Panorama high definition camera lens |
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