JPS5758110A - Optical system having focus detector - Google Patents

Optical system having focus detector

Info

Publication number
JPS5758110A
JPS5758110A JP13411280A JP13411280A JPS5758110A JP S5758110 A JPS5758110 A JP S5758110A JP 13411280 A JP13411280 A JP 13411280A JP 13411280 A JP13411280 A JP 13411280A JP S5758110 A JPS5758110 A JP S5758110A
Authority
JP
Japan
Prior art keywords
emitting device
light emitting
luminous flux
passes
glass block
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
JP13411280A
Other languages
English (en)
Other versions
JPH029323B2 (ja
Inventor
Kazuo Tanaka
Yukichi Niwa
Mitsutoshi Owada
Yasuo Ogino
Noboru Yukimura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP13411280A priority Critical patent/JPS5758110A/ja
Priority to US06/282,037 priority patent/US4455065A/en
Priority to DE19813138066 priority patent/DE3138066A1/de
Publication of JPS5758110A publication Critical patent/JPS5758110A/ja
Publication of JPH029323B2 publication Critical patent/JPH029323B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
JP13411280A 1980-07-15 1980-09-25 Optical system having focus detector Granted JPS5758110A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP13411280A JPS5758110A (en) 1980-09-25 1980-09-25 Optical system having focus detector
US06/282,037 US4455065A (en) 1980-07-15 1981-07-09 Optical device
DE19813138066 DE3138066A1 (de) 1980-09-25 1981-09-24 Optisches system mit scharfeinstellerfassungseinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13411280A JPS5758110A (en) 1980-09-25 1980-09-25 Optical system having focus detector

Publications (2)

Publication Number Publication Date
JPS5758110A true JPS5758110A (en) 1982-04-07
JPH029323B2 JPH029323B2 (ja) 1990-03-01

Family

ID=15120732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13411280A Granted JPS5758110A (en) 1980-07-15 1980-09-25 Optical system having focus detector

Country Status (1)

Country Link
JP (1) JPS5758110A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595271A (en) * 1983-11-05 1986-06-17 Canon Kabushiki Kaisha In-focus state detection device
CN110888221A (zh) * 2018-09-07 2020-03-17 大立光电股份有限公司 电子装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595271A (en) * 1983-11-05 1986-06-17 Canon Kabushiki Kaisha In-focus state detection device
CN110888221A (zh) * 2018-09-07 2020-03-17 大立光电股份有限公司 电子装置
CN110888221B (zh) * 2018-09-07 2021-10-22 大立光电股份有限公司 电子装置

Also Published As

Publication number Publication date
JPH029323B2 (ja) 1990-03-01

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