JPS5946334U - electronic flash device - Google Patents
electronic flash deviceInfo
- Publication number
- JPS5946334U JPS5946334U JP10936583U JP10936583U JPS5946334U JP S5946334 U JPS5946334 U JP S5946334U JP 10936583 U JP10936583 U JP 10936583U JP 10936583 U JP10936583 U JP 10936583U JP S5946334 U JPS5946334 U JP S5946334U
- Authority
- JP
- Japan
- Prior art keywords
- output
- electronic flash
- light
- detector
- flash device
- 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
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Exposure Control For Cameras (AREA)
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Analogue/Digital Conversion (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、本考案の電子フラッシュ装置の実施例を示す
ブロック図である。第２図は、本考案の電子フラッシュ
装置に含まれる光デイジタル回路の好適実施例の回路図
である。第３図は、第２図の回路の時間に対する電圧レ
ベルを示すグラフである。第４図は、本考案の電子フラ
ッシュ装置に含まれる光デイジタル化回路の他の好適実
施例の回路図である。第５図は、第４図の回路の時間に
対する電圧レベルを示すグラフである。第６図は、本考
案の電子フラッシュ装置に含まれる光デイジタル化回路
の他の好適実施例の回路図である。第７図は本考案の電
子フラッシュの実施例の回路図である。第８図は、第７
図の時間に対する信号レベルを示すグラフである。
（符号説明）、１１：フラッシュ・バルブ、１３：トリ
ガ回路、１７：フラッシュ終止回路、２１：制御回路、
２３：光センサ、２５：光デイジタル化回路、３１ニカ
ウンタ、３５：論理回路、３９：ホトダイオード。FIG. 1 is a block diagram showing an embodiment of the electronic flash device of the present invention. FIG. 2 is a circuit diagram of a preferred embodiment of the optical digital circuit included in the electronic flash device of the present invention. FIG. 3 is a graph showing voltage level versus time for the circuit of FIG. FIG. 4 is a circuit diagram of another preferred embodiment of the optical digitization circuit included in the electronic flash device of the present invention. FIG. 5 is a graph showing voltage level versus time for the circuit of FIG. FIG. 6 is a circuit diagram of another preferred embodiment of the optical digitization circuit included in the electronic flash device of the present invention. FIG. 7 is a circuit diagram of an embodiment of the electronic flash of the present invention. Figure 8 shows the 7th
It is a graph which shows the signal level with respect to the time of a figure. (Description of symbols), 11: Flash bulb, 13: Trigger circuit, 17: Flash termination circuit, 21: Control circuit,
23: optical sensor, 25: optical digitization circuit, 31 counter, 35: logic circuit, 39: photodiode.
Claims (5)
フラッシュバルブと、受けた閃光の強さに応じた出力信
号を発生するため露光するように、 配置された光セ
ンサと、前記光センサに接続され前記出力信号に応じて
充電して前記光センサが受けた光エネルギー量を表わす
電圧出力を発生するコンデンサと、前記電圧出力を入力
として受けるように接続される入力ヒステリシスを有す
る電圧レベル構出器であって、入力の電圧に従って高出
力又は低出力を出力する検出器と、該検出器出力に応答
して前記コンデンサの充電速度並びに放電速度が前記光
センサの出力信号によって制御される様に前記コンデン
サに流れ゛る電流の方向を切換える手段と、前記検出器
からのパルス信号数が所定値に達した時に前記フラッシ
ュバルブからの光を終止させる手段と、を有することを
特徴とする電子フラッシュ装置。(1) A flash bulb that generates a flash of light that illuminates a subject; a light sensor that is arranged to expose the light to generate an output signal according to the intensity of the received flash; a capacitor connected to charge in response to the output signal to generate a voltage output representative of the amount of light energy received by the light sensor; and a voltage level structure having input hysteresis connected to receive the voltage output as an input. a detector that outputs a high output or a low output according to an input voltage, and in response to the detector output, the charging rate and discharging rate of the capacitor are controlled by the output signal of the optical sensor. An electronic flash characterized in that it has means for switching the direction of the current flowing through the capacitor, and means for terminating light from the flash bulb when the number of pulse signals from the detector reaches a predetermined value. Device.
とする実用新案登録請求の範囲第（１）項記載の電子フ
ラッシュ装置。(2) The electronic flash device according to claim 1, wherein the optical sensor is a photodiode.
れることを特徴とする実用新案登録請求の範囲第（２）
項記載の電子フラッシュ装置。(3) Utility model registration claim No. (2) characterized in that the switching means is formed by a diode bridge circuit.
Electronic flash device as described in Section.
回路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（３）項記載の電子フラッシュ装置。(4) The detector is a CMO3 Schmitt trigger.
The electronic flash device according to claim (3) of the utility model registration, characterized in that it is formed of a circuit.
リガ−回路の入出力端間に接続されることを特徴とする
実用新案登録請求の範囲第（４）項記載の電子フラッシ
ュ装置。(5) The electronic flash device according to claim 4, wherein the diode bridge circuit is connected between the input and output terminals of the Schmitt trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936583U JPS5946334U (en) | 1979-01-04 | 1983-07-14 | electronic flash device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US999 | 1979-01-04 | ||
| JP10936583U JPS5946334U (en) | 1979-01-04 | 1983-07-14 | electronic flash device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5946334U true JPS5946334U (en) | 1984-03-27 |
| JPH0216346Y2 JPH0216346Y2 (en) | 1990-05-07 |
Family
ID=30254790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10936583U Granted JPS5946334U (en) | 1979-01-04 | 1983-07-14 | electronic flash device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946334U (en) |
-
1983
- 1983-07-14 JP JP10936583U patent/JPS5946334U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0216346Y2 (en) | 1990-05-07 |
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