JPS55115037A - Shutter tester - Google Patents
Shutter testerInfo
- Publication number
- JPS55115037A JPS55115037A JP2302279A JP2302279A JPS55115037A JP S55115037 A JPS55115037 A JP S55115037A JP 2302279 A JP2302279 A JP 2302279A JP 2302279 A JP2302279 A JP 2302279A JP S55115037 A JPS55115037 A JP S55115037A
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- light
- curtain
- slit
- light source
- 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
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE: To improve testing accuracy by adding a light source or the like which radiates light from diagonally behind to the shutter curtains.
CONSTITUTION: A light source 54 which radiates light diagonally to a shutter curtain 103 from its behind, a photo detector 55, a slit plate 56 and an imaging optical system 57 are disposed. Then, when the shutter front curtain 103a covers the photographing image plane, the light from the light source 54 radiates part 61 of the back of the shutter front curtain 103a and part of the reflected light enters the entire surface of the slit hole 56a of a slit plate 56. On the other hand, when the slit 103c formed by the trailing end of the shutter front curtain 103a and the leading end of the rear curtain 103b is within a radiation range 61, the light of the light source 54 goes through the slit 103c and enters the camera inside. Hence, the output waveform of the photo detector 55 becomes trapezoidal and the passage of the specified position within the photographing image plane of the shutter curtain end part is accurately detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2302279A JPS55115037A (en) | 1979-02-28 | 1979-02-28 | Shutter tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2302279A JPS55115037A (en) | 1979-02-28 | 1979-02-28 | Shutter tester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55115037A true JPS55115037A (en) | 1980-09-04 |
JPS6235099B2 JPS6235099B2 (en) | 1987-07-30 |
Family
ID=12098851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2302279A Granted JPS55115037A (en) | 1979-02-28 | 1979-02-28 | Shutter tester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115037A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63169636A (en) * | 1987-01-07 | 1988-07-13 | Tsubosaka Denki Kk | Accuracy measuring instrument for focal plane shutter |
-
1979
- 1979-02-28 JP JP2302279A patent/JPS55115037A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63169636A (en) * | 1987-01-07 | 1988-07-13 | Tsubosaka Denki Kk | Accuracy measuring instrument for focal plane shutter |
Also Published As
Publication number | Publication date |
---|---|
JPS6235099B2 (en) | 1987-07-30 |
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