JPS6419926U - - Google Patents
Info
- Publication number
- JPS6419926U JPS6419926U JP1987113694U JP11369487U JPS6419926U JP S6419926 U JPS6419926 U JP S6419926U JP 1987113694 U JP1987113694 U JP 1987113694U JP 11369487 U JP11369487 U JP 11369487U JP S6419926 U JPS6419926 U JP S6419926U
- Authority
- JP
- Japan
- Prior art keywords
- strobe
- time
- shutter blade
- exposure time
- electrostrictive element
- 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
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Stroboscope Apparatuses (AREA)
- Shutters For Cameras (AREA)
- Exposure Control For Cameras (AREA)
Description
第１図は本考案の特徴を図解した波形図、第２
図はバイモルフ素子を使用したシヤツタ機構の一
例を示す平面図、第３図は本考案の一実施例を示
す回路ブロツク図、第４図は第１図に対応した従
来例を示す波形図である。
１，２……絞り兼用シヤツタ羽根、５……電歪
素子、８……撮影距離入力部、９……フイルム感
度入力部、Ｄ１……ダイオード、Ｆ１，Ｆ２……
開口値、Ｒ１，Ｒ２……抵抗、ＳＷ１……スイツ
チ、Ｖ……バイモルフ端子間電圧。
Figure 1 is a waveform diagram illustrating the features of this invention;
The figure is a plan view showing an example of a shutter mechanism using a bimorph element, Fig. 3 is a circuit block diagram showing an embodiment of the present invention, and Fig. 4 is a waveform diagram showing a conventional example corresponding to Fig. 1. . 1, 2... Shutter blade that also serves as aperture, 5... Electrostrictive element, 8... Shooting distance input section, 9... Film sensitivity input section, D1 ... Diode, F1 , F2 ...
Opening value, R1 , R2 ...resistance, SW1 ...switch, V...bimorph terminal voltage.
Claims (1)
を用い、その駆動電源に内蔵ストロボ装置の昇圧
回路を共用する絞り兼用レンズシヤツタを備える
カメラにおいて、 撮影時ストロボを発光させる場合、前記ストロ
ボのガイドナンバーと被写体距離とフイルム感度
から算出された絞り値Ｆ１に対する秒時ｔ１が、
ＡＥ（自動露出制御）による露出秒時ｔ２よりも
小さいときは、前記秒時ｔ１でストロボを発光さ
せ、かつ前記秒時ｔ１から前記露出秒時ｔ２まで
の間は電歪素子５の電荷を抵抗Ｒ２を介して徐々
に放電させて、前記絞り兼用シヤツタ羽根が僅か
に閉鎖する程度に止どめ、前記露出秒時ｔ２の時
点で電歪素子５の端子間を短絡させて前記シヤツ
タ羽根を閉鎖させるようにしたことを特徴とする
ストロボ内蔵カメラ。[Claims for Utility Model Registration] Electrostrictive element 5 is used as the driving force source for the shutter blade that also serves as an aperture.
In a camera equipped with an aperture and lens shutter that shares the booster circuit of the built-in strobe device as its driving power source, when firing the strobe during shooting, the aperture value F calculated from the strobe's guide number, subject distance, and film sensitivity is used. The time in seconds t 1 for 1 is
When the exposure time t2 by AE (automatic exposure control) is smaller than the exposure time t2, the strobe is emitted at the time t1 , and the electrostrictive element 5 is activated from the time t1 to the exposure time t2 . gradually discharge the electric charge through the resistor R2 to the extent that the diaphragm/shutter blade is slightly closed, and at the exposure time t2 , the terminals of the electrostrictive element 5 are short-circuited. A camera with a built-in strobe, characterized in that the shutter blade is closed when the shutter blade is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987113694U JPH0720663Y2 (en) | 1987-07-24 | 1987-07-24 | Camera with built-in flash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987113694U JPH0720663Y2 (en) | 1987-07-24 | 1987-07-24 | Camera with built-in flash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419926U true JPS6419926U (en) | 1989-01-31 |
| JPH0720663Y2 JPH0720663Y2 (en) | 1995-05-15 |
Family
ID=31353758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987113694U Expired - Lifetime JPH0720663Y2 (en) | 1987-07-24 | 1987-07-24 | Camera with built-in flash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720663Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11961061B2 (en) | 2010-10-13 | 2024-04-16 | Walmart Apollo, Llc | Method for self-checkout with a mobile device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054124U (en) * | 1983-09-20 | 1985-04-16 | 日本精密工業株式会社 | exposure control circuit |
| JPS62163026A (en) * | 1986-01-13 | 1987-07-18 | Seiko Koki Kk | Exposure control device for stroboscopic photographing |
-
1987
- 1987-07-24 JP JP1987113694U patent/JPH0720663Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054124U (en) * | 1983-09-20 | 1985-04-16 | 日本精密工業株式会社 | exposure control circuit |
| JPS62163026A (en) * | 1986-01-13 | 1987-07-18 | Seiko Koki Kk | Exposure control device for stroboscopic photographing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11961061B2 (en) | 2010-10-13 | 2024-04-16 | Walmart Apollo, Llc | Method for self-checkout with a mobile device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0720663Y2 (en) | 1995-05-15 |
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