JPS59156228U - Auto iris exposure compensation circuit - Google Patents
Auto iris exposure compensation circuitInfo
- Publication number
- JPS59156228U JPS59156228U JP5025483U JP5025483U JPS59156228U JP S59156228 U JPS59156228 U JP S59156228U JP 5025483 U JP5025483 U JP 5025483U JP 5025483 U JP5025483 U JP 5025483U JP S59156228 U JPS59156228 U JP S59156228U
- Authority
- JP
- Japan
- Prior art keywords
- exposure correction
- correction information
- circuit
- resistors
- iris
- 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
- Diaphragms For Cameras (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図は本考案に係るオートアイリスの露光補正回路図
、第２図は本考案に係る露光補正曲線図である。
１・・・電流供給回路、２・・・マイクロコンピュータ
、３・・・露光補正電圧生成回路、４・・・露光補正情
報変換回路、７・・・可変抵抗器、１０〜１３・・・バ
イナリ−コード端子、１４・・・スイッチ素子群、１５
・・・抵抗器群、２０〜２３・・・抵抗器。FIG. 1 is an exposure correction circuit diagram of an auto iris according to the present invention, and FIG. 2 is an exposure correction curve diagram according to the present invention. DESCRIPTION OF SYMBOLS 1... Current supply circuit, 2... Microcomputer, 3... Exposure correction voltage generation circuit, 4... Exposure correction information conversion circuit, 7... Variable resistor, 10-13... Binary - Cord terminal, 14... Switch element group, 15
...Resistor group, 20-23...Resistor.
Claims (1)
憶され、かつ、その露光補正情報がその表現法に従って
バイナリ−信号として出力されるマイクロコン、ピユー
タと、 前記バイナリ−信号に基づいてオン・オフされる複数個
のスイッチ素子と該複数個のスイッチ素子によってそれ
ぞれ通電される複数個の抵抗器とを有し、２進数字の組
み合わせによる表現法としての露光補正情報をアナログ
量に変換する露光補正情報変換回路と、 前記複数個の抵抗器にそれぞれ接続された可変、
抵抗器を有し、アイリスを駆動するためのオートアイリ
ス回路に出力される露光補正電圧を生成する露光補正電
圧生成回路と１ 、前記複数個の抵抗器および前記可変抵抗器に電流を供
給する電流供給回路とを備えていることを特徴とするオ
ートアイリスの露光補正回路。[Claims for Utility Model Registration] A microcomputer or a computer in which exposure correction information is stored in a representation method using a combination of binary digits, and the exposure correction information is output as a binary signal according to the representation method; - It has a plurality of switch elements that are turned on and off based on a signal and a plurality of resistors that are respectively energized by the plurality of switch elements, and the exposure correction information is expressed as a combination of binary digits. an exposure correction information conversion circuit that converts the exposure correction information into an analog quantity; and a variable resistor connected to each of the plurality of resistors.
1. an exposure correction voltage generation circuit having a resistor and generating an exposure correction voltage to be output to an auto-iris circuit for driving an iris; 1. a current supply supplying current to the plurality of resistors and the variable resistor; An auto iris exposure correction circuit characterized by comprising a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5025483U JPS59156228U (en) | 1983-04-06 | 1983-04-06 | Auto iris exposure compensation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5025483U JPS59156228U (en) | 1983-04-06 | 1983-04-06 | Auto iris exposure compensation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59156228U true JPS59156228U (en) | 1984-10-20 |
Family
ID=30180725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5025483U Pending JPS59156228U (en) | 1983-04-06 | 1983-04-06 | Auto iris exposure compensation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59156228U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292718A (en) * | 1976-01-30 | 1977-08-04 | Canon Inc | Exposure information sotrage device for camera |
| JPS5748719A (en) * | 1980-09-06 | 1982-03-20 | Minolta Camera Co Ltd | Exposure controller for flash photography |
| JPS57202524A (en) * | 1981-06-08 | 1982-12-11 | Minolta Camera Co Ltd | Equipment for automatically setting sensitivity of film |
-
1983
- 1983-04-06 JP JP5025483U patent/JPS59156228U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292718A (en) * | 1976-01-30 | 1977-08-04 | Canon Inc | Exposure information sotrage device for camera |
| JPS5748719A (en) * | 1980-09-06 | 1982-03-20 | Minolta Camera Co Ltd | Exposure controller for flash photography |
| JPS57202524A (en) * | 1981-06-08 | 1982-12-11 | Minolta Camera Co Ltd | Equipment for automatically setting sensitivity of film |
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