NL7512852A - Optisch lensstelsel met grote apertuur en relatief korte brandpuntslengte. - Google Patents

Optisch lensstelsel met grote apertuur en relatief korte brandpuntslengte.

Info

Publication number: NL7512852A
Authority: NL; Netherlands
Prior art keywords: focal length; lens system; optical lens; relatively short; large aperture
Prior art date: 1974-11-11

Application number

NL7512852A

Other languages

English (en)

Dutch (nl)

Original Assignee

Bell & Howell Co

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.)

1974-11-11

Filing date

1975-11-03

Publication date

1976-05-13

1975-11-03 Application filed by Bell & Howell Co filed Critical Bell & Howell Co

1976-05-13 Publication of NL7512852A publication Critical patent/NL7512852A/xx

Links

230000003287 optical effect Effects 0.000 title 1

Classifications

- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
- 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)

NL7512852A 1974-11-11 1975-11-03 Optisch lensstelsel met grote apertuur en relatief korte brandpuntslengte. NL7512852A (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/522,797 US3942877A (en)	1974-11-11	1974-11-11	Short focal length Petzval-type optical system

Publications (1)

Publication Number	Publication Date
NL7512852A true NL7512852A (nl)	1976-05-13

Family

ID=24082397

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7512852A NL7512852A (nl)	1974-11-11	1975-11-03	Optisch lensstelsel met grote apertuur en relatief korte brandpuntslengte.

Country Status (4)

Country	Link
US (1)	US3942877A (2)
JP (1)	JPS5165951A (2)
DE (1)	DE2549675A1 (2)
NL (1)	NL7512852A (2)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4065205A (en) *	1976-07-27	1977-12-27	Bell & Howell Company	Short focal length optical system with large aperture
JPS5526545A (en) *	1978-08-17	1980-02-26	Olympus Optical Co Ltd	Reproducing lens for video disc
US4256374A (en) *	1979-04-02	1981-03-17	Mca Discovision, Inc.	Write and read objective lens for high density storage
JPS55147605A (en) *	1979-05-04	1980-11-17	Olympus Optical Co Ltd	Objective lens for video disc
JPS57144512A (en) *	1981-03-03	1982-09-07	Konishiroku Photo Ind Co Ltd	Objective lens for reproduction of video disk
RU2260824C1 (ru) *	2003-07-23	2005-09-20	Открытое Акционерное Общество "Пеленг"	Объектив

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2744445A (en) *	1953-11-04	1956-05-08	Paillard Sa	Photographic and projection objective of the petzval type
US3450463A (en) *	1964-09-04	1969-06-17	Nippon Kogaku Kk	Photographic objective for precision copying
US3623791A (en) *	1970-01-08	1971-11-30	Olympus Optical Co	Ultrawide field eyepiece

1974
- 1974-11-11 US US05/522,797 patent/US3942877A/en not_active Expired - Lifetime
1975
- 1975-10-30 JP JP50130954A patent/JPS5165951A/ja active Pending
- 1975-11-03 NL NL7512852A patent/NL7512852A/xx unknown
- 1975-11-05 DE DE19752549675 patent/DE2549675A1/de active Pending

Also Published As

Publication number	Publication date
DE2549675A1 (de)	1976-05-13
JPS5165951A (en)	1976-06-08
US3942877A (en)	1976-03-09

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