JPS5358232A - Large aperture lens of long back focus - Google Patents

Large aperture lens of long back focus

Info

Publication number
JPS5358232A
JPS5358232A JP13362076A JP13362076A JPS5358232A JP S5358232 A JPS5358232 A JP S5358232A JP 13362076 A JP13362076 A JP 13362076A JP 13362076 A JP13362076 A JP 13362076A JP S5358232 A JPS5358232 A JP S5358232A
Authority
JP
Japan
Prior art keywords
back focus
large aperture
aperture lens
long back
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
JP13362076A
Other languages
Japanese (ja)
Other versions
JPS5642847B2 (en
Inventor
Ryoichi Doi
Yutaka Sakai
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.)
Fujinon Corp
Original Assignee
Fuji Photo 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP13362076A priority Critical patent/JPS5358232A/en
Publication of JPS5358232A publication Critical patent/JPS5358232A/en
Publication of JPS5642847B2 publication Critical patent/JPS5642847B2/ja
Granted legal-status Critical Current

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  • Lenses (AREA)

Abstract

PURPOSE: To provide a light weight and inexpensive stadard lens for the single lens reflex camera by providing a back focus of a long focas distance of about 0.68W0.69 times on a five-element constitution which has the same specification as the lens of a six-element constitution.
COPYRIGHT: (C)1978,JPO&Japio
JP13362076A 1976-11-06 1976-11-06 Large aperture lens of long back focus Granted JPS5358232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13362076A JPS5358232A (en) 1976-11-06 1976-11-06 Large aperture lens of long back focus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13362076A JPS5358232A (en) 1976-11-06 1976-11-06 Large aperture lens of long back focus

Publications (2)

Publication Number Publication Date
JPS5358232A true JPS5358232A (en) 1978-05-26
JPS5642847B2 JPS5642847B2 (en) 1981-10-07

Family

ID=15109067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13362076A Granted JPS5358232A (en) 1976-11-06 1976-11-06 Large aperture lens of long back focus

Country Status (1)

Country Link
JP (1) JPS5358232A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0541661U (en) * 1991-11-18 1993-06-08 株式会社プランナーズ Polishing device for deburring

Also Published As

Publication number Publication date
JPS5642847B2 (en) 1981-10-07

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