CN119644559B - A miniaturized, high-light, high-resolution vehicle-mounted side-view lens - Google Patents
A miniaturized, high-light, high-resolution vehicle-mounted side-view lens Download PDFInfo
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- CN119644559B CN119644559B CN202510188525.0A CN202510188525A CN119644559B CN 119644559 B CN119644559 B CN 119644559B CN 202510188525 A CN202510188525 A CN 202510188525A CN 119644559 B CN119644559 B CN 119644559B
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Abstract
The invention discloses a miniaturized large-light-transmission high-resolution vehicle-mounted side view lens, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5 and a sixth lens L6 from an object side to an image side along an optical axis, wherein the first lens L1 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object side, the second lens L2 is a meniscus negative lens with a concave surface facing the object side, the third lens L3 is a biconvex positive lens, the fourth lens L4 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object side, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, and the fourth lens L4 and the fifth lens L5 are closely connected to form a gluing group. The vehicle-mounted side view lens has the performances of clear imaging, miniaturization, large light transmission and high resolution.
Description
Technical Field
The invention belongs to the technical field of optical lenses, and particularly relates to a miniaturized large-light-transmission high-resolution vehicle-mounted side view lens.
Background
In recent years, with the rapid development of the automobile industry, the auxiliary driving and automatic driving technologies are generated, and the importance of the vehicle-mounted camera as a core component in the field is increasingly remarkable. The vehicle-mounted lens serves as a key component and plays a crucial role. Particularly, the side view lens is widely applied to a parking auxiliary system, and the convenience and safety of driving are obviously improved. Along with the popularization and adaptation of the side view lens in various vehicle types, the requirements of users on the performance and quality of the lens are also continuously improved. Meanwhile, as the vehicle-mounted system is increasingly complicated, the installation space of the vehicle-mounted lens is significantly limited. In order to meet the trend of miniaturization of lenses, the current mainstream on-vehicle side view lens designs on the market often need to make a compromise between imaging quality, resolution and cost control. The current common vehicle-mounted side view lens in the market generally achieves the aim of miniaturization of the lens by sacrificing resolving power, reducing clear aperture or increasing material cost. In view of this, it is important to develop a miniaturized, high-light-transmission, high-resolution vehicle-mounted side view lens.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a miniaturized vehicle-mounted side view lens with large light transmission and high resolution, which has the performances of miniaturization, large light transmission and high resolution.
In order to achieve the above purpose, the invention provides a miniaturized high-light-transmission high-resolution vehicle side view lens, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5 and a sixth lens L6 from an object side to an image side along an optical axis,
The first lens L1 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object space;
the second lens L2 is a negative meniscus lens with a concave surface facing the object space;
the third lens L3 is a biconvex positive lens;
The fourth lens L4 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object space;
the fifth lens L5 and the sixth lens L6 are biconvex positive lenses;
The fourth lens L4 and the fifth lens L5 are closely connected to form a gluing group;
The aperture size of the first lens L1 is D 1, the aperture value of the vehicle-mounted side view lens is FNO, the entrance pupil diameter of the vehicle-mounted side view lens is EPD, the maximum field angle of the vehicle-mounted side view lens is FOV, and the relation D 1/(FNO×EPD×tan (FOV/2)) is less than or equal to 65.
As a specific implementation mode, the effective focal length of the vehicle-mounted side view lens is f, the effective focal length of the first lens L1 is f 1, the effective focal length of the third lens L3 is f 3,f1、f3, and f meets the following conditions that f 1/f≤-2.2,2.4≤f3/f is less than or equal to 2.4 and less than or equal to 3.
As a specific implementation mode, the on-axis distance from the center of the image side of the first lens L1 to the center of the object side of the second lens L2 is d 12, the total optical length of the vehicle-mounted side view lens is TTL, and d 12 and TTL meet the following conditions that d 12/TTL is more than or equal to 0.06 and less than or equal to 0.09.
As a specific embodiment, the third lens L3 further satisfies the condition that-0.94.ltoreq.R 32/(R31-R32). Ltoreq.0.74, wherein R 31 represents the radius of curvature of the object side of the third lens L3 and R 32 represents the radius of curvature of the image side of the third lens L3.
As a specific implementation mode, the effective focal length of the vehicle-mounted side-view lens is f, the optical total length of the vehicle-mounted side-view lens is TTL, and f and TTL meet the following conditions that f/TTL is more than or equal to 0.12 and less than or equal to 0.13.
As a specific embodiment, the refractive index N d4 of the fourth lens L4 satisfies N d4. Gtoreq.1.9.
In a specific embodiment, when the first lens L1, the second lens L2 and the fourth lens L4 each adopt a meniscus negative lens with a concave surface facing the object, and the third lens L3, the fifth lens L5 and the sixth lens L6 each adopt a biconvex positive lens, the air distance from the first lens L1 to the second lens L2 is 1.6444mm, the air distance from the second lens L2 to the third lens L3 is 0.4346mm, the air distance from the third lens L3 to the diaphragm C is 0.3410mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0221 mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0565 mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.5145mm.
As a specific embodiment, when the first lens L1 is a biconcave negative lens, the second lens L2 and the fourth lens L4 are both meniscus negative lenses with concave surfaces facing the object, and the third lens L3, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, the air distance from the first lens L1 to the second lens L2 is 1.4839 mm, the air distance from the second lens L2 to the third lens L3 is 0.4575mm, the air distance from the third lens L3 to the diaphragm C is 0.5711mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0182mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0237mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.1728mm.
In a specific embodiment, when the first lens L1 and the fourth lens L4 each use a biconcave negative lens, the second lens L2 uses a meniscus negative lens with a concave surface facing the object, the third lens L3, the fifth lens L5 and the sixth lens L6 each use a biconvex positive lens, the air distance from the first lens L1 to the second lens L2 is 1.3914mm, the air distance from the second lens L2 to the third lens L3 is 0.5970mm, the air distance from the third lens L3 to the diaphragm C is 0.1861mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0865mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0232mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.2550mm.
Compared with the prior art, the invention provides a miniaturized large-light-transmission high-resolution vehicle-mounted side view lens, which has the following beneficial effects:
1) The invention realizes the optimization of optical performance and the miniaturization of the lens by reasonably planning the layout of each lens in the optical system;
2) According to the invention, the fourth lens L4 and the fifth lens L5 are glued, so that the chromatic aberration of an optical system can be effectively improved, the sensitivity of the system is reduced, and the cost is reduced;
3) According to the invention, the focal power of the third lens L3 is reasonably controlled, so that TTL is less than or equal to 20.37mm, the requirement of miniaturization is met, and the shape of the lens is further adjusted by reasonably adjusting the curvature of the third lens L3, so that the requirement of high resolution is realized;
4) The ratio of the on-axis distance between the center of the image side surface of the first lens element L1 and the center of the object side surface of the second lens element L2 to the total length of the lens is reasonably adjusted, so that the requirement of large light transmission is met.
Drawings
Fig. 1 is an optical path diagram of a miniaturized high-light-transmission high-resolution in-vehicle side view lens in embodiment 1;
fig. 2 is an MTF graph of a visible light band of a miniaturized high-pass high-resolution vehicle-mounted side view lens in example 1;
fig. 3 is a graph of relative illuminance of a miniaturized high-pass high-resolution in-vehicle side view lens in example 1;
fig. 4 is an axial aberration diagram of the visible light band of the miniaturized high-pass high-resolution in-vehicle side view lens of example 1;
fig. 5 is a vertical axis chromatic aberration chart of the visible light band of the miniaturized high-light-permeability high-resolution vehicle-mounted side view lens in embodiment 1;
fig. 6 is an optical path diagram of a miniaturized high-light-transmission high-resolution in-vehicle side view lens in embodiment 2;
Fig. 7 is an MTF graph of a visible light band of a miniaturized high-pass high-resolution vehicle-mounted side view lens in example 2;
fig. 8 is a graph of relative illuminance of a miniaturized high-pass high-resolution in-vehicle side view lens in example 2;
fig. 9 is an axial aberration diagram of the visible light band of the miniaturized high-pass high-resolution in-vehicle side view lens of example 2;
Fig. 10 is a vertical axis chromatic aberration chart of the visible light band of the miniaturized high-light-permeability high-resolution vehicle-mounted side view lens in embodiment 2;
fig. 11 is an optical path diagram of a miniaturized high-light-transmission high-resolution in-vehicle side view lens in embodiment 3;
Fig. 12 is an MTF graph of a visible light band of a miniaturized high-pass high-resolution vehicle-mounted side view lens in example 3;
fig. 13 is a graph of relative illuminance of a miniaturized high-pass high-resolution in-vehicle side view lens in example 3;
Fig. 14 is an axial aberration diagram of the visible light band of the miniaturized high-pass high-resolution in-vehicle side view lens of example 3;
Fig. 15 is a vertical axis chromatic aberration chart of the visible light band of the miniaturized high-pass high-resolution in-vehicle side view lens in example 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a miniaturized high-light-transmission high-resolution vehicle-mounted side view lens, which sequentially comprises a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5 and a sixth lens L6 from an object side to an image side along an optical axis.
The first lens L1 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object, the second lens L2 is a meniscus negative lens with a concave surface facing the object, the third lens L3 is a biconvex positive lens, the fourth lens L4 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the object, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, and the fourth lens L4 and the fifth lens L5 are closely connected to form a bonding group.
Here, the first lens L1 is provided in a curved shape of a meniscus negative lens or a biconcave negative lens with a concave surface facing the object side, which is advantageous for the lens to acquire light rays of a large angle.
The second lens L2 can disperse the light collected by the first lens L1, so that the light is stably transited to the rear optical system, and the focal power is reasonably controlled.
The third lens L3 can focus the light collected by the second lens L2, so that the light irradiates the target area more uniformly and corrects the aberration, and the imaging performance of the lens group is optimized.
The stop C is placed between the third lens L3 and the fourth lens L4, and controls imaging quality and performance of the optical system by restricting the range and direction in which light passes.
The fourth lens L4 and the fifth lens L5 are closely connected to form a gluing piece, so that chromatic aberration and distortion generated by the lens are eliminated or balanced, and tolerance sensitivity is reduced. Meanwhile, here, the fourth lens L4 and the fifth lens L5 are glass lenses, and the stability and durability of the lens group can be effectively improved. The other lenses also use glass lenses with conventional refractive index.
The sixth lens L6 can focus the light collected by the fifth lens L5, which is beneficial to field correction of the lens and optimizes the imaging performance of the lens group.
Example 1
In the optical system of this example, the first lens L1, the second lens L2, and the fourth lens L4 each adopt a meniscus negative lens with a concave surface facing the object, and the third lens L3, the fifth lens L5, and the sixth lens L6 each adopt a biconvex positive lens. The light path diagram of the vehicle-mounted side view lens is shown in fig. 1.
Referring to table 1, table 1 lists relevant parameters for each lens in this example, including radius of curvature, thickness, refractive index of material, and abbe number:
TABLE 1
Infinicity means Infinity.
In this example, the air distance from the first lens L1 to the second lens L2 is 1.6444mm, the air distance from the second lens L2 to the third lens L3 is 0.4346mm, the air distance from the third lens L3 to the diaphragm C is 0.3410mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0221 mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0565 mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.5145mm.
The technical indexes realized by the optical system in this example are as follows:
1) The caliber of the first lens L1 is D 1 = 9.5220mm;
2) The aperture value of the vehicle-mounted side view lens is FNO= 1.8218;
3) The entrance pupil diameter of the vehicle-mounted side view lens is epd= 1.4413 mm;
4) Maximum field angle of the vehicle-mounted side view lens, fov=119.5°;
5) An effective focal length of the first lens L1, f 1 = -5.7680 mm;
6) An effective focal length of the third lens L3, f 3 = 7.4126 mm;
7) The effective focal length of the vehicle-mounted side view lens is f= 2.5223 mm;
8) An on-axis distance from the image side center of the first lens element L1 to the object side center of the second lens element L2, d 12 = 1.6444 mm;
9) The total optical length of the vehicle-mounted side view lens is TTL= 20.1806 mm;
10 Radius of curvature of the object-side surface of the third lens L3: R 31 = 6.6780 mm;
11 Radius of curvature of the image-side surface of the third lens L3, R 32 = -96.3910 mm;
12 Refractive index of the fourth lens L4, N d4 =1.92.
And then obtain ：D1/(FNO×EPD×tan(FOV/2))＝60.6313;f1/f＝-2.2868 ;f3/f＝2.9389 ;d12/TTL＝0.0815;R32/(R31-R32)＝-0.9352;f/TTL＝0.1250.
Here, by closely bonding the fourth lens L4 and the fifth lens L5 to form a cemented lens, chromatic aberration of the optical system can be effectively improved, sensitivity of the system can be reduced, and cost can be reduced.
The focal power of the third lens L3 is reasonably controlled, so that TTL is less than or equal to 20.37mm, and the miniaturization requirement is met.
The incident light is controlled by adjusting and controlling the clear aperture, so that the range of the target surface image surface is widened.
Here, the demand for miniaturization is achieved by reasonably setting the aperture D 1 of the first lens, the aperture value FNO of the lens, the entrance pupil diameter EPD of the lens, and the maximum field angle FOV, that is, four are required to satisfy D 1/(fno×epd×tan (FOV/2)) +.65.
The requirement of clear imaging is realized by reasonably setting the ratio of the focal power of the first lens L1 and the third lens L3 to the focal power of the whole lens, namely-2.4 is less than or equal to f 1/f≤-2.2,2.4≤f3/f is less than or equal to 3.
The ratio of the distance between the first lens L1 and the second lens L2 to the total length of the lens is reasonably adjusted, namely d 12/TTL is required to be more than or equal to 0.06 and less than or equal to 0.09, and the requirement of large light transmission is further met.
The requirement of high resolution force is realized by reasonably adjusting the curvature of the lens of the third lens L3, namely R 32/(R31-R32 is required to be less than or equal to-0.94 and less than or equal to-0.74, and then adjusting the shape of the lens.
The total focal length of the optical system is required to be f, the total optical length TTL of the optical system is required to be less than or equal to 0.12 and less than or equal to f/TTL and less than or equal to 0.13, and the refractive index N d4 of the fourth lens L4 is required to be more than or equal to N d4 and more than or equal to 1.9, so that the miniaturization requirement is realized.
The final imaging effect of the lens in this example is evaluated by the MTF graph of fig. 2, the MTF curves under each field of view are gradually reduced, and the consistency is better, and as can be seen from the graph, the MTF value of the edge field of view is greater than 0.7 at the spatial frequency of 60pl/mm, which means that the lens has better imaging effect and resolution in the full field of view. As can be seen from the relative illuminance curve of FIG. 3, the relative illuminance value of the lens is greater than 75% in the case of the maximum field of view, FIG. 4 is an axial aberration diagram of the lens of this embodiment, in which the axial aberration is maximally no more than 0.06mm, and the imaging quality is good, and FIG. 5 is a vertical axis chromatic aberration curve, in which the vertical axis chromatic aberration is smaller than 2.8 μm.
Example 2
In this example, in the optical system, the first lens L1 is a biconcave negative lens, the second lens L2 and the fourth lens L4 are meniscus negative lenses with concave surfaces facing the object, and when the third lens L3, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, the optical path diagram of the vehicle-mounted side view lens is shown in fig. 6.
Referring to table 2, table 2 lists relevant parameters for each lens in this example, including radius of curvature, thickness, refractive index of material, and abbe number:
TABLE 2
In this example, the air distance from the first lens L1 to the second lens L2 is 1.4839 mm, the air distance from the second lens L2 to the third lens L3 is 0.4575mm, the air distance from the third lens L3 to the diaphragm C is 0.5711mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0182mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0237mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.1728mm.
The technical indexes realized by the optical system in this example are as follows:
1) The caliber of the first lens L1 is D 1 = 9.7294 mm;
2) The aperture value of the vehicle-mounted side view lens is FNO= 1.8326;
3) The entrance pupil diameter of the vehicle-mounted side view lens is epd= 1.4414 mm;
4) Maximum field angle of the vehicle-mounted side view lens, fov=119.5°;
5) An effective focal length of the first lens L1, f 1 = -5.8536 mm;
6) An effective focal length of the third lens L3, f 3 = 7.0843 mm;
7) The effective focal length of the vehicle-mounted side view lens is f= 2.5225 mm;
8) An on-axis distance from the image side center of the first lens element L1 to the object side center of the second lens element L2, d 12 = 1.4839 mm;
9) The total optical length of the vehicle-mounted side view lens is TTL=20.06 mm;
10 Radius of curvature of the object-side surface of the third lens L3: R 31 = 7.4135 mm;
11 Radius of curvature of the image-side surface of the third lens L3, R 32 = -26.5738 mm;
12 Refractive index of the fourth lens L4, N d4 =1.92.
And then obtain ：D1/(FNO×EPD×tan(FOV/2))＝61.5797;f1/f＝-2.3205 ;f3/f＝2.8084;d12/TTL＝0.0740;R32/(R31-R32)＝-0.7819;f/TTL＝0.1257.
The final imaging effect of the invention is evaluated by the MTF diagram of FIG. 7, the MTF curve in each field is gradually reduced, and the consistency is better, which means that the lens has better imaging effect and resolution in the whole field angle.
The final imaging effect of the lens in this example is evaluated by fig. 7-10, and it can be seen from fig. 7 that the MTF value is greater than 0.65 at the spatial frequency of 60pl/mm for the marginal field of view, and that the relative illuminance value is greater than 75% for the lens in the case of the maximum field of view, as can be seen from the relative illuminance curve in fig. 8, fig. 9 is an axial aberration diagram of the lens in this embodiment, and it can be seen that the axial aberration is not more than 0.08mm at the maximum, and the imaging quality is good, and fig. 10 is a vertical axis aberration diagram, and it can be seen that the vertical axis aberration is less than 3 μm.
Example 3
In this example, in the optical system, the first lens L1 and the fourth lens L4 each adopt a biconcave negative lens, the second lens L2 adopts a meniscus negative lens with a concave surface facing the object, and the third lens L3, the fifth lens L5, and the sixth lens L6 each adopt a biconvex positive lens. The optical path diagram of the industrial lens is shown in fig. 11.
Referring to table 3, table 3 lists relevant parameters for each lens in this example, including radius of curvature, thickness, refractive index of material, and abbe number:
TABLE 3 Table 3
In this example, the air distance from the first lens L1 to the second lens L2 is 1.3914mm, the air distance from the second lens L2 to the third lens L3 is 0.5970mm, the air distance from the third lens L3 to the diaphragm C is 0.1861mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0865mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0232mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.2550mm.
The technical indexes realized by the optical system in this example are as follows:
1) The caliber of the first lens L1 is D 1 = 9.8537 mm;
2) The aperture value of the vehicle-mounted side view lens is FNO= 1.8248;
3) The entrance pupil diameter of the vehicle-mounted side view lens is epd= 1.4415 mm;
4) Maximum field angle of the vehicle-mounted side view lens, fov=119.5°;
5) An effective focal length of the first lens L1, f 1 = -5.5906 mm;
6) An effective focal length of the third lens L3, f 3 = 6.2363 mm;
7) The effective focal length of the vehicle-mounted side view lens is f= 2.5227mm;
8) An on-axis distance from the image side center of the first lens L1 to the object side center of the second lens L2 is d 12 = 1.3914mm;
9) The total optical length of the vehicle-mounted side view lens is TTL= 20.0597mm;
10 Radius of curvature of the object-side surface of the third lens L3: R 31 = 6.7768mm;
11 Radius of curvature of the image side surface of the third lens L3: R 32 = -19.4263mm;
12 Refractive index of the fourth lens L4, N d4 =1.92.
And then obtain ：D1/(FNO×EPD×tan(FOV/2))＝62.6296;f1/f＝-2.2162;f3/f＝2.4721;d12/TTL＝0.0694;R32/(R31-R32)＝-0.7414;f/TTL＝0.1258.
The final imaging effect of the lens in this example is evaluated by fig. 12-15, and it can be seen from fig. 12 that the MTF value is greater than 0.65 at the spatial frequency of 60pl/mm for the marginal field of view, and that the relative illuminance value is greater than 75% for the lens in the case of the maximum field of view, as can be seen from the relative illuminance curve in fig. 13, fig. 14 is an axial aberration diagram of the lens in this embodiment, and it can be seen that the axial aberration is not more than 0.07mm at the maximum, and the imaging quality is good, and fig. 15 is a vertical axis aberration diagram, and it can be seen that the vertical axis aberration is less than 3 μm.
The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.
Claims (6)
1. A miniaturized high-resolution vehicle-mounted side view lens with large light transmission is characterized by comprising six lenses, namely a first lens L1, a second lens L2, a third lens L3, a diaphragm C, a fourth lens L4, a fifth lens L5 and a sixth lens L6 in sequence from an object side to an image side along an optical axis,
The first lens L1 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the image space;
the second lens L2 is a negative meniscus lens with a concave surface facing the image space;
the third lens L3 is a biconvex positive lens;
the fourth lens L4 is a meniscus negative lens or a biconcave negative lens with a concave surface facing the image space;
the fifth lens L5 and the sixth lens L6 are biconvex positive lenses;
The fourth lens L4 and the fifth lens L5 are closely connected to form a gluing group;
The effective focal length of the vehicle-mounted side view lens is f, the effective focal length of the first lens L1 is f 1, the effective focal length of the third lens L3 is f 3,f1、f3, and f meets the following conditions that-2.4 is less than or equal to f 1/f≤-2.2,2.4≤f3/f is less than or equal to 3;
The on-axis distance from the center of the image side of the first lens L1 to the center of the object side of the second lens L2 is d 12, the total optical length of the vehicle-mounted side view lens is TTL, and d 12 and TTL meet the following conditions that d 12/TTL is more than or equal to 0.06 and less than or equal to 0.09;
The third lens L3 further satisfies the condition that-0.94.ltoreq.R 32/(R31-R32). Ltoreq.0.74, wherein R 31 represents the radius of curvature of the object side of the third lens L3, and R 32 represents the radius of curvature of the image side of the third lens L3.
2. The miniaturized high-resolution vehicle-mounted side-view lens with high light transmission according to claim 1, wherein the effective focal length of the vehicle-mounted side-view lens is f, the total optical length of the vehicle-mounted side-view lens is TTL, and f and TTL meet the following conditions that f/TTL is more than or equal to 0.12 and less than or equal to 0.13.
3. The miniaturized high-light-transmission high-resolution vehicle-mounted side view lens of claim 1, wherein the refractive index N d4 of the fourth lens L4 satisfies that N d4 is larger than or equal to 1.9.
4. The miniaturized high-resolution vehicle-mounted side view lens according to claim 1, wherein when the first lens L1, the second lens L2 and the fourth lens L4 each adopt a meniscus negative lens with a concave surface facing the image, and the third lens L3, the fifth lens L5 and the sixth lens L6 each adopt a biconvex positive lens, the air distance from the first lens L1 to the second lens L2 is 1.6444mm, the air distance from the second lens L2 to the third lens L3 is 0.4346mm, the air distance from the third lens L3 to the aperture stop C is 0.3410mm, the air distance from the aperture stop C to the fourth lens L4 is 0.0221 mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0565 mm, and the air distance from the sixth lens L6 to the image plane IMG is 5.5145mm.
5. The miniaturized high-resolution vehicle-mounted side view lens according to claim 1, wherein when the first lens L1 is a biconcave negative lens, the second lens L2 and the fourth lens L4 are meniscus negative lenses with concave surfaces facing the image space, the third lens L3, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, the air distance from the first lens L1 to the second lens L2 is 1.4839 mm, the air distance from the second lens L2 to the third lens L3 is 0.4575mm, the air distance from the third lens L3 to the diaphragm C is 0.5711mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0182mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0237mm, and the air distance from the sixth lens L6 to the image space IMG is 5.1727mm.
6. The miniaturized high-resolution vehicle-mounted side view lens according to claim 1, wherein when the first lens L1 and the fourth lens L4 are biconcave negative lenses, the second lens L2 is a meniscus negative lens with a concave surface facing the image space, the third lens L3, the fifth lens L5 and the sixth lens L6 are biconvex positive lenses, the air distance from the first lens L1 to the second lens L2 is 1.3914mm, the air distance from the second lens L2 to the third lens L3 is 0.5970mm, the air distance from the third lens L3 to the diaphragm C is 0.1861mm, the air distance from the diaphragm C to the fourth lens L4 is 0.0865mm, the air distance from the fifth lens L5 to the sixth lens L6 is 0.0232mm, and the air distance from the sixth lens L6 to the image space IMG is 5.2550mm.
Priority Applications (1)
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| JP6967924B2 (en) * | 2017-09-25 | 2021-11-17 | ナンチャン オー−フィルム オプティカル−エレクトロニック テック カンパニー リミテッド | Imaging lens and optical device |
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| CN119335698B (en) * | 2024-12-19 | 2025-05-13 | 苏州莱能士光电科技股份有限公司 | High-resolution large-light-transmission small vehicle-mounted rearview mirror |
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| CN103576290A (en) * | 2013-10-30 | 2014-02-12 | 宁波舜宇车载光学技术有限公司 | Wide-angle lens |
| CN111352222A (en) * | 2020-05-25 | 2020-06-30 | 宁波永新光学股份有限公司 | A high-definition small vehicle wide-angle imaging system |
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Denomination of invention: A compact large-aperture high-resolution in-vehicle side-view lens Granted publication date: 20250513 Pledgee: Industrial and Commercial Bank of China Limited Zhangjiagang Branch Pledgor: SUZHOU LIGHTINS OPTICAL CO.,LTD. Registration number: Y2025980054473 |