GB1477560A - Viewfinder system for single lens reflex cameras - Google Patents

Viewfinder system for single lens reflex cameras

Info

Publication number
GB1477560A
GB1477560A GB3960375A GB3960375A GB1477560A GB 1477560 A GB1477560 A GB 1477560A GB 3960375 A GB3960375 A GB 3960375A GB 3960375 A GB3960375 A GB 3960375A GB 1477560 A GB1477560 A GB 1477560A
Authority
GB
United Kingdom
Prior art keywords
prism
eye
view
piece
finder
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
GB3960375A
Other languages
English (en)
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 GB1477560A publication Critical patent/GB1477560A/en
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
    • G03B19/00—Cameras
    • G03B19/02—Still-picture cameras
    • G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Optics & Photonics (AREA)
  • Viewfinders (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Exposure Control For Cameras (AREA)
GB3960375A 1974-09-30 1975-09-26 Viewfinder system for single lens reflex cameras Expired GB1477560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49112561A JPS5139120A (enrdf_load_stackoverflow) 1974-09-30 1974-09-30

Publications (1)

Publication Number Publication Date
GB1477560A true GB1477560A (en) 1977-06-22

Family

ID=14589744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3960375A Expired GB1477560A (en) 1974-09-30 1975-09-26 Viewfinder system for single lens reflex cameras

Country Status (5)

Country Link
JP (1) JPS5139120A (enrdf_load_stackoverflow)
DE (2) DE2543160C3 (enrdf_load_stackoverflow)
FR (1) FR2286395A1 (enrdf_load_stackoverflow)
GB (1) GB1477560A (enrdf_load_stackoverflow)
ZA (1) ZA755710B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1715379A3 (de) * 2005-04-18 2007-06-20 Leica Camera Aktiengesellschaft Winkelvorsatz für den Einblick einer Messsucherkamera

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54143633A (en) * 1978-04-28 1979-11-09 Asahi Optical Co Ltd Interchangeable contact lens mirror barrel
JPS616601A (ja) * 1984-06-20 1986-01-13 Canon Inc フアインダ−光学系
JPS60233628A (ja) * 1984-05-07 1985-11-20 Canon Inc フアインダ−光学系
JPS60263101A (ja) * 1984-06-11 1985-12-26 Canon Inc フアインダ−光学系
JPS616804U (ja) * 1984-06-18 1986-01-16 キヤノン株式会社 フアインダ−用プリズム
JPS60233630A (ja) * 1984-05-07 1985-11-20 Canon Inc フアインダ−光学系
JPS616803U (ja) * 1984-06-18 1986-01-16 キヤノン株式会社 フアインダ−用プリズム
JPH0381749A (ja) * 1989-08-25 1991-04-08 Olympus Optical Co Ltd 実像式ファインダー
DE4345554B4 (de) * 1992-09-11 2007-09-13 Canon K.K. Suchereinrichtung
JPH07198914A (ja) * 1993-12-28 1995-08-01 Asahi Optical Co Ltd プリズム及びプリズムを有するファインダ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117468B2 (enrdf_load_stackoverflow) * 1972-06-19 1976-06-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1715379A3 (de) * 2005-04-18 2007-06-20 Leica Camera Aktiengesellschaft Winkelvorsatz für den Einblick einer Messsucherkamera

Also Published As

Publication number Publication date
DE2543160A1 (de) 1976-04-01
DE2543160B2 (de) 1977-06-30
FR2286395B1 (enrdf_load_stackoverflow) 1981-04-30
DE2543160C3 (de) 1978-03-02
DE2559601B2 (de) 1978-12-07
JPS5139120A (enrdf_load_stackoverflow) 1976-04-01
FR2286395A1 (fr) 1976-04-23
DE2559601A1 (de) 1977-09-01
DE2559601C3 (de) 1979-08-16
ZA755710B (en) 1976-08-25

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950925