JPS603819U - Photometering device for single-lens reflex cameras - Google Patents

Photometering device for single-lens reflex cameras

Info

Publication number
JPS603819U
JPS603819U JP1983094558U JP9455883U JPS603819U JP S603819 U JPS603819 U JP S603819U JP 1983094558 U JP1983094558 U JP 1983094558U JP 9455883 U JP9455883 U JP 9455883U JP S603819 U JPS603819 U JP S603819U
Authority
JP
Japan
Prior art keywords
mirror
light
photometric
semi
photographing lens
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.)
Pending
Application number
JP1983094558U
Other languages
Japanese (ja)
Inventor
圭司 大沢
Original Assignee
株式会社ニコン
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 株式会社ニコン filed Critical 株式会社ニコン
Priority to JP1983094558U priority Critical patent/JPS603819U/en
Publication of JPS603819U publication Critical patent/JPS603819U/en
Pending legal-status Critical Current

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  • Exposure Control For Cameras (AREA)
  • Cameras In General (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図および第２図は本考案の第１実施例を示しており
、第１図は測光装置近傍の縦断面図、第２図は跳ね上げ
ミラーの正面図、第３図は第２実施例に係る測光装置近
傍の縦断面図、第４区は第３実施例に係る跳ね上げミラ
ーの正面図である。 １・・・撮影レンズ、２・・・遮光部材、２１・・・シ
ャッター基板、２２・・・シャッタ先幕、２３・・・シ
ャッタ後幕、３・・・暗ね上げミラー、３２・・・ミラ
ー板、３３・・・半透過領域、４・・・測光用ミラー、
５・・・受光系、７・・・導光経路、８・・・拡散面。Figures 1 and 2 show a first embodiment of the present invention, with Figure 1 being a longitudinal sectional view near the photometer, Figure 2 being a front view of the flip-up mirror, and Figure 3 showing the second embodiment. The fourth section of the vertical cross-sectional view of the vicinity of the photometric device according to the example is a front view of the flip-up mirror according to the third embodiment. DESCRIPTION OF SYMBOLS 1... Photographing lens, 2... Light shielding member, 21... Shutter board, 22... Shutter front curtain, 23... Shutter rear curtain, 3... Dark lift mirror, 32... Mirror plate, 33... Semi-transparent area, 4... Photometry mirror,
5... Light receiving system, 7... Light guiding path, 8... Diffusion surface.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）撮影レンズ透過光をファインダ光学系に反射する
跳ね上げミラーに半透過領域を形成し、該、　　半透過
領域の後方に該跳ね上げミラーに連動する測光用ミラー
を設け、該跳ね上げミラーと該測光用ミラーとが、フィ
ルム前方に位置して該透過光を遮光する遮光部材と撮影
レンズとの間に設けられるとともに該測光用ミラーから
の反射光を信号に変換する受光系を備えて成る一眼レフ
レックスカメラの測光装置において、撮影レンズ透過光
を前記遮光部材に導く導光経路を前記測光用ミラーの領
域外に設け、導かれた撮影レンズ透過光を前記受光系に
反射させる拡散面を前記遮光部材の表面に設け、前記受
光系が前記遮光部材により拡散された撮影レンズ透過光
と同時に前記測光用ミラーにより反射された撮影レンズ
透過光とを受光することを特徴とする一眼レフレックス
カメラの測光装置。(1) A semi-transmissive area is formed in a flip-up mirror that reflects the light transmitted through the photographing lens to the finder optical system, and a photometric mirror that is linked to the flip-up mirror is provided behind the semi-transparent area, and the flip-up mirror and the photometric mirror are provided between a light shielding member located in front of the film to block the transmitted light and the photographic lens, and a light receiving system that converts the reflected light from the photometric mirror into a signal. In the photometry device for a single-lens reflex camera, a light guiding path for guiding light transmitted through the photographing lens to the light shielding member is provided outside the area of the photometry mirror, and a diffusing surface reflects the guided light transmitted through the photographing lens to the light receiving system. is provided on the surface of the light shielding member, and the light receiving system receives the light transmitted through the photographing lens diffused by the light shielding member and simultaneously the light transmitted through the photographing lens reflected by the photometric mirror. Camera photometry device. （２）前記半透過領域は前記遮光部材にも前記撮影レン
ズ透過光を導（ように前記測光用ミラーより大きく形成
され、前記導光経路は前記半透過領域のうち前記測光用
ミラーに対応する領域外の半透過領域で形成されること
を特徴とする実用新案登録請求の範囲第（１）項記載の
一眼レフレックスカメラの測光装置。(2) The semi-transparent region also guides the light transmitted through the photographing lens to the light shielding member (so that it is formed larger than the photometric mirror, and the light guide path corresponds to the photometric mirror in the semi-transparent region). A photometric device for a single-lens reflex camera according to claim (1) of the utility model registration, characterized in that it is formed of a semi-transparent area outside the area. （３）前記導光経路は前記カメラのミラーボックスと前
記跳ね上げミラーとの間隙で形成されることを特徴とす
る実用新案登録請求の範囲第（１）頂戴の一眼レフレッ
クスカメラの測光装置。(3) The light guide path is formed by a gap between the mirror box of the camera and the flip-up mirror. Claim No. (1) A photometric device for a single-lens reflex camera.
JP1983094558U 1983-06-20 1983-06-20 Photometering device for single-lens reflex cameras Pending JPS603819U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1983094558U JPS603819U (en) 1983-06-20 1983-06-20 Photometering device for single-lens reflex cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983094558U JPS603819U (en) 1983-06-20 1983-06-20 Photometering device for single-lens reflex cameras

Publications (1)

Publication Number Publication Date
JPS603819U true JPS603819U (en) 1985-01-12

Family

ID=30226290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983094558U Pending JPS603819U (en) 1983-06-20 1983-06-20 Photometering device for single-lens reflex cameras

Country Status (1)

Country Link
JP (1) JPS603819U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508934B1 (en) * 1970-10-17 1975-04-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508934B1 (en) * 1970-10-17 1975-04-08

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