JPS5667822A - Focal diaphragm - Google Patents

Focal diaphragm

Info

Publication number
JPS5667822A
JPS5667822A JP14397179A JP14397179A JPS5667822A JP S5667822 A JPS5667822 A JP S5667822A JP 14397179 A JP14397179 A JP 14397179A JP 14397179 A JP14397179 A JP 14397179A JP S5667822 A JPS5667822 A JP S5667822A
Authority
JP
Japan
Prior art keywords
range finding
prism
lens
light beams
finding part
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
JP14397179A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0323896B2 (enrdf_load_stackoverflow
Inventor
Susumu Matsumura
Takashi Suzuki
Kazuya Matsumoto
Kikuo Momiyama
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 JP14397179A priority Critical patent/JPS5667822A/ja
Priority to GB8035647A priority patent/GB2065919B/en
Priority to DE19803041969 priority patent/DE3041969A1/de
Publication of JPS5667822A publication Critical patent/JPS5667822A/ja
Publication of JPH0323896B2 publication Critical patent/JPH0323896B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Viewfinders (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
JP14397179A 1979-11-07 1979-11-07 Focal diaphragm Granted JPS5667822A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP14397179A JPS5667822A (en) 1979-11-07 1979-11-07 Focal diaphragm
GB8035647A GB2065919B (en) 1979-11-07 1980-11-06 Focussing screen
DE19803041969 DE3041969A1 (de) 1979-11-07 1980-11-06 Einstellmattscheibe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14397179A JPS5667822A (en) 1979-11-07 1979-11-07 Focal diaphragm

Publications (2)

Publication Number Publication Date
JPS5667822A true JPS5667822A (en) 1981-06-08
JPH0323896B2 JPH0323896B2 (enrdf_load_stackoverflow) 1991-03-29

Family

ID=15351311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14397179A Granted JPS5667822A (en) 1979-11-07 1979-11-07 Focal diaphragm

Country Status (1)

Country Link
JP (1) JPS5667822A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816220A (ja) * 1981-07-22 1983-01-29 Olympus Optical Co Ltd 焦点板
JPS58117511A (ja) * 1981-12-30 1983-07-13 Fujitsu Ltd 回折格子
JP2005196930A (ja) * 2003-12-12 2005-07-21 Konica Minolta Opto Inc 回折光学素子及び光ピックアップ装置
JP2006285011A (ja) * 2005-04-01 2006-10-19 Canon Inc 回折光学素子、回折光学素子成形用金型、回折光学素子の製造方法、及び回折光学素子成形用金型の製造方法
JP2019215498A (ja) * 2018-06-14 2019-12-19 大日本印刷株式会社 光変調素子および情報記録媒体
JP2021170124A (ja) * 2017-09-08 2021-10-28 大日本印刷株式会社 光変調素子および情報記録媒体
US12189163B2 (en) 2017-09-08 2025-01-07 Dai Nippon Printing Co., Ltd. Light modulation element and information recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216226A (en) * 1975-07-28 1977-02-07 Canon Inc Focusing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216226A (en) * 1975-07-28 1977-02-07 Canon Inc Focusing device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5816220A (ja) * 1981-07-22 1983-01-29 Olympus Optical Co Ltd 焦点板
JPS58117511A (ja) * 1981-12-30 1983-07-13 Fujitsu Ltd 回折格子
JP2005196930A (ja) * 2003-12-12 2005-07-21 Konica Minolta Opto Inc 回折光学素子及び光ピックアップ装置
JP2006285011A (ja) * 2005-04-01 2006-10-19 Canon Inc 回折光学素子、回折光学素子成形用金型、回折光学素子の製造方法、及び回折光学素子成形用金型の製造方法
JP2021170124A (ja) * 2017-09-08 2021-10-28 大日本印刷株式会社 光変調素子および情報記録媒体
US12189163B2 (en) 2017-09-08 2025-01-07 Dai Nippon Printing Co., Ltd. Light modulation element and information recording medium
JP2019215498A (ja) * 2018-06-14 2019-12-19 大日本印刷株式会社 光変調素子および情報記録媒体

Also Published As

Publication number Publication date
JPH0323896B2 (enrdf_load_stackoverflow) 1991-03-29

Similar Documents

Publication Publication Date Title
JPS54143661A (en) Recording optical system
CA2084408A1 (en) Illumination system and method for a high definition light microscope
JPS56142509A (en) Lighting device of microscope
JPS52121318A (en) Photographic lens of large aperture ratio
JPS5246813A (en) Photographic optical system for observation for ophthalmofunduscopic c amera
JPS5667822A (en) Focal diaphragm
JPS57178212A (en) Microscope optical system
JPS5652710A (en) Mark finder for camera
JPS5432318A (en) Lens for micro-reduction photography
JPS5789731A (en) Focusing screen
JPS57168214A (en) Albada finder
JPS55130527A (en) Real image system finder optical system
JPS57148718A (en) Illumination system of optical device
JPS547927A (en) Photographic lens of excellent focusing operation
JPS5588041A (en) Finder of single-lens reflex camera
RU2012907C1 (ru) Зеркально-линзовый объектив
JPS5595915A (en) Fundus camera
JPS52116257A (en) Microscope of high focal depth
JPS5567732A (en) Finder optical system
JPS56130725A (en) Optical device for focus detection
JPS55146431A (en) Single-lens reflex camera that can be peeped by both eyes
SU624187A1 (ru) Светосильный объектив
JPS5546729A (en) Finder optical system
SU694827A1 (ru) Панкратический объектив
JPS55101930A (en) Camera provided with data recorder