JPS6212142U - - Google Patents
Info
- Publication number
- JPS6212142U JPS6212142U JP1985102448U JP10244885U JPS6212142U JP S6212142 U JPS6212142 U JP S6212142U JP 1985102448 U JP1985102448 U JP 1985102448U JP 10244885 U JP10244885 U JP 10244885U JP S6212142 U JPS6212142 U JP S6212142U
- Authority
- JP
- Japan
- Prior art keywords
- reference value
- strobe
- amount
- light
- auto
- 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
- 239000003990 capacitor Substances 0.000 claims 1
- 238000005375 photometry Methods 0.000 claims 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Exposure Control For Cameras (AREA)
- Stroboscope Apparatuses (AREA)
Description
第１図は、本考案の第１実施例のオートストロ
ボ撮影装置の構成を示す回路ブロツク図、第２図
は、第１図に示すオートストロボ撮影装置の動作
を示すフローチヤート、第３図は、第１図に示す
オートストロボ装置の各部の信号波形を示すタイ
ムチヤート、第４図は、本考案の第２実施例のオ
ートストロボ撮影装置の構成を示す回路ブロツク
図、第５図は、第４図に示すオートストロボ撮影
装置の動作を示すフローチヤート、第６図は、第
４図に示すオートストロボ撮影装置の各部の信号
波形を示すタイムチヤート、第７図は、上記第２
実施例の変形例を示す回路ブロツク図、第８図は
、第７図に示す回路の動作説明用のタイムチヤー
トである。
２……測光回路、４，２５……Ｄ／Ａ変換回路
、５……総発光量設定回路、６……シヤツタ閉信
号発生回路、７，２０２……シヤツタ制御回路、
８，２０３……シヤツタ、９……トリガー信号発
生回路、１０，１０３……ストロボ、１１，２１
……積分タイミング信号発生回路、１２……発光
停止信号発生回路、２２……演算回路、２３……
遅延回路、２４……Ａ／Ｄ変換回路。
FIG. 1 is a circuit block diagram showing the configuration of an auto strobe photography device according to a first embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the auto strobe photography device shown in FIG. 1, and FIG. , a time chart showing the signal waveforms of each part of the auto strobe device shown in FIG. 1, FIG. FIG. 4 is a flow chart showing the operation of the auto strobe photography device shown in FIG. 4, FIG. 6 is a time chart showing signal waveforms of each part of the auto strobe photography device shown in FIG.
FIG. 8, a circuit block diagram showing a modification of the embodiment, is a time chart for explaining the operation of the circuit shown in FIG. 7. 2...Photometering circuit, 4,25...D/A conversion circuit, 5...Total light emission setting circuit, 6...Shutter close signal generation circuit, 7,202...Shutter control circuit,
8,203...Shutter, 9...Trigger signal generation circuit, 10,103...Strobe, 11,21
... Integral timing signal generation circuit, 12 ... Light emission stop signal generation circuit, 22 ... Arithmetic circuit, 23 ...
Delay circuit, 24...A/D conversion circuit.
Claims (1)
反射光量が適正露光に対応した値になつたときに
ストロボ発光を停止させるオートストロボ撮影装
置において、被写体からの反射光量を検出する測
光回路と、適正露光に対応した基準値を設定する
基準値設定手段と、上記測光回路の出力と基準値
設定手段の出力を比較する比較手段と、シヤツタ
全開時点でストロボを発光させると共に、上記比
較手段によつて上記測光回路の出力が上記基準値
に達しないときにメインコンデンサへの充電了と
同時にストロボを再発光させるトリガー信号を発
生するトリガー信号発生手段と、を具備したこと
を特徴とするオートストロボ撮影装置。 (2) 基準値設定手段は、基準値として適正露光
量に対応する値を設定することを特徴とする実用
新案登録請求の範囲第１項記載のオートストロボ
撮影装置。 (3) 基準値設定手段は、基準値として適正露光
量から既発光時における被写体からの反射光量を
差し引いた値を設定することを特徴とする実用新
案登録請求の範囲第１項記載のオートストロボ撮
影装置。[Scope of Claim for Utility Model Registration] (1) In an auto strobe photography device that stops strobe light emission when the amount of light reflected from the subject when the strobe is fired reaches a value corresponding to the appropriate exposure, A photometry circuit that detects the amount of light, a reference value setting means that sets a reference value corresponding to proper exposure, a comparison means that compares the output of the photometering circuit with the output of the reference value setting means, and a strobe that fires when the shutter is fully open. and a trigger signal generating means for generating a trigger signal for causing the strobe to emit light again at the same time as charging of the main capacitor is completed when the output of the photometric circuit does not reach the reference value as determined by the comparing means. An auto strobe photography device characterized by: (2) The auto flash photographing device according to claim 1, wherein the reference value setting means sets a value corresponding to an appropriate exposure amount as the reference value. (3) The auto strobe according to claim 1, wherein the reference value setting means sets a value obtained by subtracting the amount of light reflected from the subject when the light has already been emitted from the appropriate exposure amount as the reference value. Photography equipment.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985102448U JPS6212142U (en) | 1985-07-06 | 1985-07-06 | |
| US07/235,840 US4897684A (en) | 1985-07-06 | 1988-08-19 | Auto-flash photographing system |
| US07/390,516 US4985725A (en) | 1985-07-06 | 1989-08-07 | Auto-flash photographing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985102448U JPS6212142U (en) | 1985-07-06 | 1985-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6212142U true JPS6212142U (en) | 1987-01-24 |
Family
ID=30974100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985102448U Pending JPS6212142U (en) | 1985-07-06 | 1985-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6212142U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01250679A (en) * | 1988-03-30 | 1989-10-05 | Sekisui Chem Co Ltd | Valve element guide structure of valve |
| JPH01250680A (en) * | 1988-03-30 | 1989-10-05 | Sekisui Chem Co Ltd | Valve element guide structure of valve |
-
1985
- 1985-07-06 JP JP1985102448U patent/JPS6212142U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01250679A (en) * | 1988-03-30 | 1989-10-05 | Sekisui Chem Co Ltd | Valve element guide structure of valve |
| JPH01250680A (en) * | 1988-03-30 | 1989-10-05 | Sekisui Chem Co Ltd | Valve element guide structure of valve |
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