JPS5859026U - Automatic dimming electronic flash device - Google Patents
Automatic dimming electronic flash deviceInfo
- Publication number
- JPS5859026U JPS5859026U JP10409282U JP10409282U JPS5859026U JP S5859026 U JPS5859026 U JP S5859026U JP 10409282 U JP10409282 U JP 10409282U JP 10409282 U JP10409282 U JP 10409282U JP S5859026 U JPS5859026 U JP S5859026U
- Authority
- JP
- Japan
- Prior art keywords
- light
- switching element
- circuit
- receiving element
- light receiving
- 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
Links
Landscapes
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (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
図は本考案の自動調光電子閃光装置の一実施例を示す電
気回路図である。
１．２・・・・・・切換スイッチ、８・・・・・・主コ
ンデンサ、１５・・・・・・受光素子、１６・・・・・
・積分コンデンサ、２０・・・・・・微分コンデンサ、
１９・・・・・・バイパス管。The figure is an electrical circuit diagram showing an embodiment of the automatic dimming electronic flash device of the present invention. 1.2... Selector switch, 8... Main capacitor, 15... Light receiving element, 16...
・Integral capacitor, 20... Differential capacitor,
19...Bypass pipe.
Claims (1)
て発光する閃光放電管と、カメラのシャツタレリーズ動
作に連動してゲート電圧を与えられてオンする第１のス
イッチング素子を含み前記閃光放電管を励起するトリガ
ー回路と、被写体からの反射光を受光する受光素子、と
、前記受光素子からの光電流を積分し積分量が所定量に
なったとき前記閃光放電管の発光を停止する信号を発す
る積分回路と、前記積分回路からの発光停止信号を受け
てオンになる第２のスイッチング素子を有し前記閃光放
電管の発光を停止する発光停止回路とを有してなる自動
調光電子閃光装置において、前記受光素子が他の閃光装
置からの発光を受光したとき前記第１のスイッチング素
子にゲート電圧を与える第１の光検知回路と前記受光素
子に入射光がなくなったことを検知し前記第２のスイッ
チング素子にオン信号を与える第２の光検知回路とを有
した光検知手段と、前記受光素子を前記積分回路あるい
は前記光検知手段のいずれかに接続する゛ 第１の切換
スイッチと、前記受光素子が前記積分回路に接がれる時
前記積分回路を前記第２のスイッチング素子に接続し前
記受光素子が前記光検知手段に接がれる時前記第２の光
検知回路を前記第２のスイッチング素子に接続する第２
の切換えス′イツチとを備えて自動調光電子閃光装置。The flash discharge includes a main capacitor, a flash discharge tube that emits light by consuming the charge of the main capacitor, and a first switching element that is turned on by applying a gate voltage in conjunction with the shirt release operation of the camera. a trigger circuit that excites the tube; a light receiving element that receives reflected light from a subject; and a signal that integrates the photocurrent from the light receiving element and stops the flash discharge tube from emitting light when the integrated amount reaches a predetermined amount. and a light emission stop circuit that stops light emission of the flash discharge tube and has a second switching element that is turned on in response to a light emission stop signal from the integration circuit. In the flash device, a first light detection circuit applies a gate voltage to the first switching element when the light receiving element receives light emission from another flash device, and a first light detection circuit detects that no more light is incident on the light receiving element. a first changeover switch that connects the light receiving element to either the integrating circuit or the light detecting means; a second light detecting circuit that provides an on signal to the second switching element; When the light receiving element is connected to the integrating circuit, the integrating circuit is connected to the second switching element, and when the light receiving element is connected to the light detecting means, the second light detecting circuit is connected to the second switching element. the second switching element connected to the second switching element;
An automatic dimming electronic flash device equipped with a switching switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10409282U JPS595853Y2 (en) | 1982-07-08 | 1982-07-08 | Automatic dimming electronic flash device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10409282U JPS595853Y2 (en) | 1982-07-08 | 1982-07-08 | Automatic dimming electronic flash device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5859026U true JPS5859026U (en) | 1983-04-21 |
| JPS595853Y2 JPS595853Y2 (en) | 1984-02-22 |
Family
ID=29898703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10409282U Expired JPS595853Y2 (en) | 1982-07-08 | 1982-07-08 | Automatic dimming electronic flash device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595853Y2 (en) |
-
1982
- 1982-07-08 JP JP10409282U patent/JPS595853Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS595853Y2 (en) | 1984-02-22 |
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