JPS5727215A - Aperture number converting convex lens and optical transmission line using said lens - Google Patents

Aperture number converting convex lens and optical transmission line using said lens

Info

Publication number
JPS5727215A
JPS5727215A JP10339880A JP10339880A JPS5727215A JP S5727215 A JPS5727215 A JP S5727215A JP 10339880 A JP10339880 A JP 10339880A JP 10339880 A JP10339880 A JP 10339880A JP S5727215 A JPS5727215 A JP S5727215A
Authority
JP
Japan
Prior art keywords
lens
convex
refractive index
aperture number
convex lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10339880A
Other languages
Japanese (ja)
Other versions
JPS6057049B2 (en
Inventor
Noritaka Kurauchi
Kenichi Yoshida
Kozo Ono
Yoshikazu Nishiwaki
Koichi Tsuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP55103398A priority Critical patent/JPS6057049B2/en
Publication of JPS5727215A publication Critical patent/JPS5727215A/en
Publication of JPS6057049B2 publication Critical patent/JPS6057049B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203—Optical features

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To improve a coupling efficiency to a fiber, by forming a refractive index distribution type lens so that one end and the other end become flat and convex, respectively, and decreasing the refractive index gradually toward the convex surface side from the flat side. CONSTITUTION:To a terminal part of a core part 6 of a communication optical fiber 3 is connected a convex lens 2 for converting the aperture number, which has been formed so that a connecting part to said terminal, and its opposite side become flat and convex 1, respectively. This convex lens 2 has such a refractive index distribution as a refractive index is decreased toward the convex surface side from the flat side, and a light beam 5 which has been made incident at an angle of theta against an optical axis is made incident to a communication optical fiber 6 with a projecting angle which is much smaller than theta, therefore, an intense light beam is inputted even if the aperture number of the fiber 6 itself is small.
JP55103398A 1980-07-28 1980-07-28 Convex lens for numerical aperture conversion Expired JPS6057049B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55103398A JPS6057049B2 (en) 1980-07-28 1980-07-28 Convex lens for numerical aperture conversion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55103398A JPS6057049B2 (en) 1980-07-28 1980-07-28 Convex lens for numerical aperture conversion

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP60118929A Division JPS60258508A (en) 1985-06-03 1985-06-03 Optical transmission line

Publications (2)

Publication Number Publication Date
JPS5727215A true JPS5727215A (en) 1982-02-13
JPS6057049B2 JPS6057049B2 (en) 1985-12-13

Family

ID=14352946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55103398A Expired JPS6057049B2 (en) 1980-07-28 1980-07-28 Convex lens for numerical aperture conversion

Country Status (1)

Country Link
JP (1) JPS6057049B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933415A (en) * 1982-08-18 1984-02-23 Nippon Sheet Glass Co Ltd Lens and its production
JPS60237401A (en) * 1984-05-10 1985-11-26 Nippon Sheet Glass Co Ltd Distributed index medium and its production
US5500911A (en) * 1994-08-05 1996-03-19 The Whitaker Corporation Lensed optical fiber assembly and process for alignment with an active device
EP0703404A1 (en) * 1994-09-23 1996-03-27 Enplas Corporation Surface light source device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729253A (en) * 1971-05-28 1973-04-24 Western Electric Co Optical system comprising a single element having a continuously varying index of refraction
JPS5050937A (en) * 1973-09-04 1975-05-07
JPS53134938U (en) * 1977-03-31 1978-10-25
JPS5418172U (en) * 1978-06-22 1979-02-06

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729253A (en) * 1971-05-28 1973-04-24 Western Electric Co Optical system comprising a single element having a continuously varying index of refraction
JPS5050937A (en) * 1973-09-04 1975-05-07
JPS53134938U (en) * 1977-03-31 1978-10-25
JPS5418172U (en) * 1978-06-22 1979-02-06

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933415A (en) * 1982-08-18 1984-02-23 Nippon Sheet Glass Co Ltd Lens and its production
JPS60237401A (en) * 1984-05-10 1985-11-26 Nippon Sheet Glass Co Ltd Distributed index medium and its production
US5500911A (en) * 1994-08-05 1996-03-19 The Whitaker Corporation Lensed optical fiber assembly and process for alignment with an active device
EP0703404A1 (en) * 1994-09-23 1996-03-27 Enplas Corporation Surface light source device

Also Published As

Publication number Publication date
JPS6057049B2 (en) 1985-12-13

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