JPS54134623A - Photograhic apparatus - Google Patents
Photograhic apparatusInfo
- Publication number
- JPS54134623A JPS54134623A JP4207678A JP4207678A JPS54134623A JP S54134623 A JPS54134623 A JP S54134623A JP 4207678 A JP4207678 A JP 4207678A JP 4207678 A JP4207678 A JP 4207678A JP S54134623 A JPS54134623 A JP S54134623A
- Authority
- JP
- Japan
- Prior art keywords
- plane
- lens
- curtain
- shutter
- mirror
- 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
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Exposure Control For Cameras (AREA)
Abstract
PURPOSE: To detect the focal point of the photographic lens in the curtain plane with high accuracy and achieve the simplification of the apparatus and the miniaturization of the apparatus by directing the reflected light from the curtain plane of the focal plane shutter to a photo detector through imaging lens.
CONSTITUTION: The luminous flux from a photographic lens 1 is led to the front curtain plane of a focal plane shutter 4 through the half mirror 3 in the central part of a quick return mirror 2 and the light reflected by this curtain plane is imaged on a photo detector 7 through an imaging lens 6. Before the mirror 2 springs up, the lens 1 is automatically moved in the direction of the film 5 from the position furthest from the film 5. This movement is performed by way of a focal point detecting part 8, a motor drive part 9, and a motor 10. Thereby, the focus position on the front curtain plane of the shutter 4 is automatically detected and therefore, the focusing is obtained simply by moving the lens 1 by a minute distance l to the curtain 5 side.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53042076A JPS6057055B2 (en) | 1978-04-12 | 1978-04-12 | Photography equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53042076A JPS6057055B2 (en) | 1978-04-12 | 1978-04-12 | Photography equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54134623A true JPS54134623A (en) | 1979-10-19 |
JPS6057055B2 JPS6057055B2 (en) | 1985-12-13 |
Family
ID=12625961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53042076A Expired JPS6057055B2 (en) | 1978-04-12 | 1978-04-12 | Photography equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6057055B2 (en) |
-
1978
- 1978-04-12 JP JP53042076A patent/JPS6057055B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6057055B2 (en) | 1985-12-13 |
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