JPS5892634U - Photometric circuit - Google Patents
Photometric circuitInfo
- Publication number
- JPS5892634U JPS5892634U JP1982119328U JP11932882U JPS5892634U JP S5892634 U JPS5892634 U JP S5892634U JP 1982119328 U JP1982119328 U JP 1982119328U JP 11932882 U JP11932882 U JP 11932882U JP S5892634 U JPS5892634 U JP S5892634U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- circuit
- light
- output
- photometry circuit
- 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
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
- Indication In Cameras, And Counting Of Exposures (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
第１図は本考案の基本的構成を示すブロック線図、第２
図は本考案の他の実施例を示すブロック線図、第３図は
ストロボ光などの単発光の測光の為の本考案の実施例を
示すブロック線図である。
１・・・・・・螢光素子、２・・・・・・オペアンプ、
３・・・・・田グダイオード、４・・・・・・積分回路
、５・・・・・・Ａ−Ｄ変換器、６・・・・・・演算器
、７・・・・・・デジタル化されたシャッター速度又は
絞り情報、８・・・・・・デジタル化されたフィルム感
度情報、９・・・・・・表示系、１０・・・・・・シャ
ッター又は絞り制御系、７′・・・・・・アナログ量の
シャッター速度又は絞り情報、８′・・・・・・アナロ
グ量のフィルム感度情報、２１．２２・・・・・・オペ
アンプ、３１・・・・・・ピーク値ホールド回路。Figure 1 is a block diagram showing the basic configuration of the present invention;
The figure is a block diagram showing another embodiment of the present invention, and FIG. 3 is a block diagram showing an embodiment of the present invention for photometry of single light emission such as strobe light. 1... Fluorescent element, 2... Operational amplifier,
3... Tag diode, 4... Integrating circuit, 5... A-D converter, 6... Arithmetic unit, 7... Digitized shutter speed or aperture information, 8... Digitized film sensitivity information, 9... Display system, 10... Shutter or aperture control system, 7' ...Analog amount shutter speed or aperture information, 8'...Analog amount film sensitivity information, 21.22...Operation amplifier, 31...Peak value hold circuit.
Claims (1)
光する測光回路の出力をＡ−Ｄ変換器に入力し、該Ａ−
Ｄ変換器のデジタル出力に基づいて撮影情報を表示する
表示回路を有するカメラにおいて、前記測光回路と前記
Ａ−Ｄ変換器の間に測光回路出力に含まれる被写界から
の光のゆらぎによる交流成分の振幅を減少させるための
積分回路を設け、安定したデジタル撮影情報の表示を可
能としたことを特徴とするカメラの測光回路。The output of a photometry circuit that is equipped with a light-receiving element with fast photoresponsiveness and measures light from a subject is input to an A-D converter, and the A-D converter is
In a camera having a display circuit that displays photographing information based on the digital output of a D converter, an alternating current between the photometry circuit and the A-D converter due to fluctuations of light from the subject included in the photometry circuit output is provided. A photometry circuit for a camera, characterized in that it is provided with an integrating circuit for reducing the amplitude of the component, thereby making it possible to stably display digital photographic information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982119328U JPS5892634U (en) | 1982-08-05 | 1982-08-05 | Photometric circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982119328U JPS5892634U (en) | 1982-08-05 | 1982-08-05 | Photometric circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5892634U true JPS5892634U (en) | 1983-06-23 |
Family
ID=29913402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982119328U Pending JPS5892634U (en) | 1982-08-05 | 1982-08-05 | Photometric circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5892634U (en) |
-
1982
- 1982-08-05 JP JP1982119328U patent/JPS5892634U/en active Pending
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