JPS5717940A - Focal plane shutter - Google Patents
Focal plane shutterInfo
- Publication number
- JPS5717940A JPS5717940A JP9289480A JP9289480A JPS5717940A JP S5717940 A JPS5717940 A JP S5717940A JP 9289480 A JP9289480 A JP 9289480A JP 9289480 A JP9289480 A JP 9289480A JP S5717940 A JPS5717940 A JP S5717940A
- Authority
- JP
- Japan
- Prior art keywords
- ground plate
- accomodated
- gap
- thickness
- plate
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
- G03B9/18—More than two members
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shutters For Cameras (AREA)
Abstract
PURPOSE:To prevent unevenness of exposure and inaccurate exposure by fixing a partition plate between a ground plate and a cover plate inclined to the ground plate and by arranging so that a gap between the ground plate and the cover plate is broad at a position where a rear wing is accomodated before shutter traveling while at the opposite side the gap is narrow. CONSTITUTION:Blades 7-11 that constitute a rear wing are placed between a pass partition plate 2 and a ground plate 1, coupled rotatably with two arms 5, 6 by pins 14a-14e, 14a'-14e' respectively and arranged such that rotary axes 21, 22 of the arms 5, 6 and two coupling pins of each blade forms a parallelogram. Further the rear wing has thickness A at the overlapping part among the blades, and at the overlapping part among the arm and the blades it has the thickness B. Both of this thickness A, B is maximum at an accomodated position, decreases according to an action of the shutter wing and in a state of termination of the action becames minimum. Further, the partition plate 2 is fixed inclined to the ground plate such that it has, between it and the ground plate 1, a gap, where thickness B can be accomodated, at the rear wing accomodating position in the upper direction of the opening part and in the under direction of the opening part has a gap where a blade of one sheet can be accomodated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9289480A JPS5717940A (en) | 1980-07-07 | 1980-07-07 | Focal plane shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9289480A JPS5717940A (en) | 1980-07-07 | 1980-07-07 | Focal plane shutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5717940A true JPS5717940A (en) | 1982-01-29 |
Family
ID=14067160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9289480A Pending JPS5717940A (en) | 1980-07-07 | 1980-07-07 | Focal plane shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5717940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614149A (en) * | 1993-07-08 | 1997-03-25 | Nippon Yakin Kogyo Co., Ltd. | Stainless steels for coins and method of producing coins of stainless steel |
-
1980
- 1980-07-07 JP JP9289480A patent/JPS5717940A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614149A (en) * | 1993-07-08 | 1997-03-25 | Nippon Yakin Kogyo Co., Ltd. | Stainless steels for coins and method of producing coins of stainless steel |
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