JPS6420529A - Shutter for camera - Google Patents
Shutter for cameraInfo
- Publication number
- JPS6420529A JPS6420529A JP17760987A JP17760987A JPS6420529A JP S6420529 A JPS6420529 A JP S6420529A JP 17760987 A JP17760987 A JP 17760987A JP 17760987 A JP17760987 A JP 17760987A JP S6420529 A JPS6420529 A JP S6420529A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- sector
- aperture
- thicker
- edge
- 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
Landscapes
- Shutters For Cameras (AREA)
Abstract
PURPOSE:To improve light shielding property and strength by employing a shutter base where the edge of an aperture when each slit forming blade traveling the surface of the shutter base is positioned so as to shield light is thicker than the edge of said aperture when said each blade overlapped is positioned so as to opened it. CONSTITUTION:The pre-travel position of the rear blade sector means that the slit forming blade 1c and four divided blades 11d in the 2nd blade sector are all overlapped and they are positioned in a thicker part 31 including the edge part 31a on one side of the aperture 33. On the other hand, the post-travel position of said sector means that the slit forming blade 11c and four divided blades 11d in said sector spread and lie in the entire area of the aperture to shield light. Since the thicker part 29 is thicker than a thicker part 31 after the 2nd blade sector travels, the blades 11c and 11d spread and an interval between them is narrowed in their thickness direction, thereby considerably improving light shielding property.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17760987A JPS6420529A (en) | 1987-07-15 | 1987-07-15 | Shutter for camera |
US07/217,649 US4926202A (en) | 1987-07-15 | 1988-07-12 | Shutter for use in camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17760987A JPS6420529A (en) | 1987-07-15 | 1987-07-15 | Shutter for camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6420529A true JPS6420529A (en) | 1989-01-24 |
Family
ID=16033995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17760987A Pending JPS6420529A (en) | 1987-07-15 | 1987-07-15 | Shutter for camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6420529A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6271919B1 (en) | 1998-04-02 | 2001-08-07 | Nec Corporation | Semiconductor device and alignment apparatus and alignment method for same |
-
1987
- 1987-07-15 JP JP17760987A patent/JPS6420529A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6271919B1 (en) | 1998-04-02 | 2001-08-07 | Nec Corporation | Semiconductor device and alignment apparatus and alignment method for same |
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