DE3013500A1 - Exposure detail projection into SLR viewfinder - has light guide in front of penta-prism and has integral illumination - Google Patents

Exposure detail projection into SLR viewfinder - has light guide in front of penta-prism and has integral illumination

Info

Publication number
DE3013500A1
DE3013500A1 DE19803013500 DE3013500A DE3013500A1 DE 3013500 A1 DE3013500 A1 DE 3013500A1 DE 19803013500 DE19803013500 DE 19803013500 DE 3013500 A DE3013500 A DE 3013500A DE 3013500 A1 DE3013500 A1 DE 3013500A1
Authority
DE
Germany
Prior art keywords
viewfinder
front
light guide
prism
slr
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
DE19803013500
Other languages
German (de)
Inventor
Makoto Kimura
Yutaka Iizuka
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.)
Nikon Corp
Original Assignee
Nippon Kogaku KK
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
Priority to JP1979051109U priority Critical patent/JPS6144197Y2/ja
Application filed by Nippon Kogaku KK filed Critical Nippon Kogaku KK
Publication of DE3013500A1 publication Critical patent/DE3013500A1/en
Application status is Granted legal-status Critical

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B19/00Cameras
    • G03B19/02Still-picture cameras
    • G03B19/12Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/18Signals indicating condition of a camera member or suitability of light
    • G03B17/20Signals indicating condition of a camera member or suitability of light visible in viewfinder

Abstract

An addition to the front of an SLR camera projects the objective settings into the viewfinder using a simple light guide (13) with inlet surfaces for outside and internal illumination and outlet surfaces for the data. The image is projected into the front of the viewfinder housing and from there into the prism using angled mirrors. The data viewer is separate from the viewfinder, which can be replaced without affecting the data input. The internal light (13a) provides illumination when the flash mode is selected while a large front surface (13f) of the light guide collects normal daylight for normal exposures. The viewer provides a direct indication of the objective settings without any complex mechanical or electric links.
DE19803013500 1979-04-17 1980-04-08 Exposure detail projection into SLR viewfinder - has light guide in front of penta-prism and has integral illumination Granted DE3013500A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979051109U JPS6144197Y2 (en) 1979-04-17 1979-04-17

Publications (1)

Publication Number Publication Date
DE3013500A1 true DE3013500A1 (en) 1980-10-30

Family

ID=12877629

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803013500 Granted DE3013500A1 (en) 1979-04-17 1980-04-08 Exposure detail projection into SLR viewfinder - has light guide in front of penta-prism and has integral illumination

Country Status (2)

Country Link
JP (1) JPS6144197Y2 (en)
DE (1) DE3013500A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800655A (en) * 1971-12-20 1974-04-02 Minolta Camera Kk Photographic viewfinder arrangement
US4142786A (en) * 1976-09-09 1979-03-06 Canon Kabushiki Kaisha Liquid crystal display device for a camera

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5214441B2 (en) * 1973-08-04 1977-04-21
JPS5214441U (en) * 1975-07-04 1977-02-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800655A (en) * 1971-12-20 1974-04-02 Minolta Camera Kk Photographic viewfinder arrangement
US4142786A (en) * 1976-09-09 1979-03-06 Canon Kabushiki Kaisha Liquid crystal display device for a camera

Also Published As

Publication number Publication date
JPS6144197Y2 (en) 1986-12-12
JPS55152525U (en) 1980-11-04

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: G03B 17/20

8127 New person/name/address of the applicant

Owner name: NIKON CORP., TOKIO/TOKYO, JP

D2 Grant after examination
8364 No opposition during term of opposition