JPS57205701A - Lens - Google Patents

Lens

Info

Publication number
JPS57205701A
JPS57205701A JP56090468A JP9046881A JPS57205701A JP S57205701 A JPS57205701 A JP S57205701A JP 56090468 A JP56090468 A JP 56090468A JP 9046881 A JP9046881 A JP 9046881A JP S57205701 A JPS57205701 A JP S57205701A
Authority
JP
Japan
Prior art keywords
lens
domains
planes
optical axis
differ
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.)
Pending
Application number
JP56090468A
Other languages
Japanese (ja)
Inventor
Shigeo Kubota
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56090468A priority Critical patent/JPS57205701A/en
Publication of JPS57205701A publication Critical patent/JPS57205701A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/10—Bifocal lenses; Multifocal lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To obtain a lens of which the distributions of the exit beams in respective domains are of similar shapes and which have powers differing in the directions within the planes perpendicular to the optical axis by guadrisecting the lens at the two planes inclusive of the optical axis so that the focal lengths of the respective diagonal domains assume equal values and the two values thereof differ. CONSTITUTION:A lens 7 is quadrisected at the XZ, YZ planes which include an optical axis Z and intersect orthogonally with each other so that the focal lengths of the lens domains 7a, 7c of the 1st and 3rd quadrants have an equal value f1, and the focal lengths of the lens domains 7b, 7d of the 2nd and 4th quadrants have an equal value f2 and that the f1 and f2 differ. Such lens is obtained by adhering blocks of lens materials having different refractive indices then molding these. The four domains 7a-7d are made axially symmetrical and therefore when a circular beam is made incident to the lens 7, the distributions of the exit beams from the four domains 7a-7d within the planes intersecting orthogonally with the optical axis are of similar shapes and differ in intensity in accordance with the directions within the planes.
JP56090468A 1981-06-12 1981-06-12 Lens Pending JPS57205701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56090468A JPS57205701A (en) 1981-06-12 1981-06-12 Lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56090468A JPS57205701A (en) 1981-06-12 1981-06-12 Lens

Publications (1)

Publication Number Publication Date
JPS57205701A true JPS57205701A (en) 1982-12-16

Family

ID=13999424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56090468A Pending JPS57205701A (en) 1981-06-12 1981-06-12 Lens

Country Status (1)

Country Link
JP (1) JPS57205701A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532765A1 (en) * 1982-09-03 1984-03-09 Asahi Chemical Ind FOCUSING POSITION DETECTION DEVICE
US6686815B1 (en) 1999-08-11 2004-02-03 Nokia Corporation Microwave filter
US10014454B2 (en) * 2016-05-04 2018-07-03 Samsung Electronics Co., Ltd. Light-emitting device including chip-scale lens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563603U (en) * 1979-06-21 1981-01-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563603U (en) * 1979-06-21 1981-01-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532765A1 (en) * 1982-09-03 1984-03-09 Asahi Chemical Ind FOCUSING POSITION DETECTION DEVICE
US6686815B1 (en) 1999-08-11 2004-02-03 Nokia Corporation Microwave filter
US10014454B2 (en) * 2016-05-04 2018-07-03 Samsung Electronics Co., Ltd. Light-emitting device including chip-scale lens

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