JPS554068A - Focusing lens for video disc - Google Patents

Focusing lens for video disc

Info

Publication number
JPS554068A
JPS554068A JP7722078A JP7722078A JPS554068A JP S554068 A JPS554068 A JP S554068A JP 7722078 A JP7722078 A JP 7722078A JP 7722078 A JP7722078 A JP 7722078A JP S554068 A JPS554068 A JP S554068A
Authority
JP
Japan
Prior art keywords
lens
cemented
conditions
face
group 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
JP7722078A
Other languages
English (en)
Other versions
JPS6049289B2 (ja
Inventor
Atsuo Goto
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.)
Olympus Corp
Original Assignee
Olympus Optical Co 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP53077220A priority Critical patent/JPS6049289B2/ja
Priority to US06/049,411 priority patent/US4270843A/en
Priority to DE2925737A priority patent/DE2925737C2/de
Publication of JPS554068A publication Critical patent/JPS554068A/ja
Publication of JPS6049289B2 publication Critical patent/JPS6049289B2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Optical Head (AREA)
JP53077220A 1978-06-26 1978-06-26 ビデオデスク用の集光レンズ Expired JPS6049289B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP53077220A JPS6049289B2 (ja) 1978-06-26 1978-06-26 ビデオデスク用の集光レンズ
US06/049,411 US4270843A (en) 1978-06-26 1979-06-18 Objective for video disks
DE2925737A DE2925737C2 (de) 1978-06-26 1979-06-26 Objektiv für Bildplatten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53077220A JPS6049289B2 (ja) 1978-06-26 1978-06-26 ビデオデスク用の集光レンズ

Publications (2)

Publication Number Publication Date
JPS554068A true JPS554068A (en) 1980-01-12
JPS6049289B2 JPS6049289B2 (ja) 1985-11-01

Family

ID=13627757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53077220A Expired JPS6049289B2 (ja) 1978-06-26 1978-06-26 ビデオデスク用の集光レンズ

Country Status (3)

Country Link
US (1) US4270843A (ja)
JP (1) JPS6049289B2 (ja)
DE (1) DE2925737C2 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864168U (ja) * 1981-10-27 1983-04-30 株式会社東芝 波形整形回路
US4431275A (en) * 1981-10-26 1984-02-14 Olympus Optical Co., Ltd. Optical recording and read-out lens system for optical recording type disks
JPS6215516A (ja) * 1985-07-15 1987-01-23 Tokinaa Kogaku Kk コリメ−タレンズ
JPS6310118A (ja) * 1986-07-01 1988-01-16 Asahi Optical Co Ltd 光デイスク用対物レンズ

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745512A (en) * 1980-09-02 1982-03-15 Olympus Optical Co Ltd Lens for video disk
JPS57154213A (en) * 1981-03-18 1982-09-24 Asahi Optical Co Ltd Objective lens for video disk
JPS5887521A (ja) * 1981-11-20 1983-05-25 Konishiroku Photo Ind Co Ltd ビデオデイスク等の再生用対物レンズ
JPS59174810A (ja) * 1983-03-24 1984-10-03 Nippon Kogaku Kk <Nikon> 対物レンズ
JP2784041B2 (ja) * 1989-05-31 1998-08-06 株式会社リコー 光ディスク用対物レンズ
US5161063A (en) * 1991-02-21 1992-11-03 University Of Rochester Objectives for an optical data storage head
US8068899B2 (en) 2007-07-03 2011-11-29 The Board Of Trustees Of The Leland Stanford Junior University Method and system of using intrinsic-based photosensing with high-speed line scanning for characterization of biological thick tissue including muscle
EP3426135B1 (en) 2016-03-08 2024-01-03 Enspectra Health, Inc. Non-invasive detection of skin disease
EP3614915A4 (en) 2017-04-28 2021-01-20 Enspectra Health, Inc. SARCOMAS IMAGING AND MEASUREMENT SYSTEMS AND METHODS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620339A (en) * 1926-05-20 1927-03-08 Eastman Kodak Co Projection objective
US3272071A (en) * 1963-06-14 1966-09-13 Bausch & Lomb Microscope objective having two doublets
JPS5118557A (en) * 1974-07-22 1976-02-14 Olympus Optical Co Bideo deisukuyotaibutsurenzu

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431275A (en) * 1981-10-26 1984-02-14 Olympus Optical Co., Ltd. Optical recording and read-out lens system for optical recording type disks
JPS5864168U (ja) * 1981-10-27 1983-04-30 株式会社東芝 波形整形回路
JPS6215516A (ja) * 1985-07-15 1987-01-23 Tokinaa Kogaku Kk コリメ−タレンズ
JPS6310118A (ja) * 1986-07-01 1988-01-16 Asahi Optical Co Ltd 光デイスク用対物レンズ
JPH0140325B2 (ja) * 1986-07-01 1989-08-28 Asahi Optical Co Ltd

Also Published As

Publication number Publication date
DE2925737C2 (de) 1982-08-12
US4270843A (en) 1981-06-02
DE2925737A1 (de) 1980-01-03
JPS6049289B2 (ja) 1985-11-01

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