DE2258219C3 - Verfahren zur Lichtmessung in einäugigen Spiegelreflexkameras und Anordnung zur Durchführung des Verfahrens - Google Patents

Verfahren zur Lichtmessung in einäugigen Spiegelreflexkameras und Anordnung zur Durchführung des Verfahrens

Info

Publication number
DE2258219C3
DE2258219C3 DE2258219A DE2258219A DE2258219C3 DE 2258219 C3 DE2258219 C3 DE 2258219C3 DE 2258219 A DE2258219 A DE 2258219A DE 2258219 A DE2258219 A DE 2258219A DE 2258219 C3 DE2258219 C3 DE 2258219C3
Authority
DE
Germany
Prior art keywords
component
lens
viewfinder
output
photoelectronic
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.)
Expired
Application number
DE2258219A
Other languages
German (de)
English (en)
Other versions
DE2258219B2 (de
DE2258219A1 (de
Inventor
Tadazumi Tokio Sakazaki
Naoyuki Kawagoe Saitama Uno
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of DE2258219A1 publication Critical patent/DE2258219A1/de
Publication of DE2258219B2 publication Critical patent/DE2258219B2/de
Application granted granted Critical
Publication of DE2258219C3 publication Critical patent/DE2258219C3/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09978—Protection against viewer backlight or integration of the viewer light into the measured light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/099—Arrangement of photoelectric elements in or on the camera
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09976—Through the lens [TTL] measuring in mirror-reflex cameras the sensor being mounted in, before, or behind the porro-prism

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Viewfinders (AREA)
  • Exposure Control For Cameras (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
DE2258219A 1971-12-01 1972-11-28 Verfahren zur Lichtmessung in einäugigen Spiegelreflexkameras und Anordnung zur Durchführung des Verfahrens Expired DE2258219C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9749971A JPS532056B2 (cg-RX-API-DMAC7.html) 1971-12-01 1971-12-01

Publications (3)

Publication Number Publication Date
DE2258219A1 DE2258219A1 (de) 1973-06-14
DE2258219B2 DE2258219B2 (de) 1974-06-27
DE2258219C3 true DE2258219C3 (de) 1975-02-13

Family

ID=14193942

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2258219A Expired DE2258219C3 (de) 1971-12-01 1972-11-28 Verfahren zur Lichtmessung in einäugigen Spiegelreflexkameras und Anordnung zur Durchführung des Verfahrens

Country Status (4)

Country Link
US (1) US3810202A (cg-RX-API-DMAC7.html)
JP (1) JPS532056B2 (cg-RX-API-DMAC7.html)
DE (1) DE2258219C3 (cg-RX-API-DMAC7.html)
GB (1) GB1410067A (cg-RX-API-DMAC7.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710411B2 (cg-RX-API-DMAC7.html) * 1973-08-27 1982-02-26
US4178084A (en) * 1975-06-06 1979-12-11 Canon Kabushiki Kaisha Device for measuring light incident on an image forming optical system
JP2002182303A (ja) * 2000-12-15 2002-06-26 Asahi Optical Co Ltd ミラーボックスおよび電子スチルカメラ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486814A (en) * 1966-04-08 1969-12-30 Minolta Camera Kk Motion picture camera light control means
US3633473A (en) * 1969-11-10 1972-01-11 Copal Co Ltd Exposure control apparatus for photographic camera

Also Published As

Publication number Publication date
JPS532056B2 (cg-RX-API-DMAC7.html) 1978-01-25
DE2258219B2 (de) 1974-06-27
GB1410067A (en) 1975-10-15
DE2258219A1 (de) 1973-06-14
JPS4861143A (cg-RX-API-DMAC7.html) 1973-08-27
US3810202A (en) 1974-05-07

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee