JPS55115038A - Diffusion light source type shutter testing device - Google Patents

Diffusion light source type shutter testing device

Info

Publication number
JPS55115038A
JPS55115038A JP2302379A JP2302379A JPS55115038A JP S55115038 A JPS55115038 A JP S55115038A JP 2302379 A JP2302379 A JP 2302379A JP 2302379 A JP2302379 A JP 2302379A JP S55115038 A JPS55115038 A JP S55115038A
Authority
JP
Japan
Prior art keywords
shutter
photoelectric transducer
imaging lens
photoelectric
slit
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
Application number
JP2302379A
Other languages
Japanese (ja)
Inventor
Michio Yamazaki
Akitsugu Yamada
Shigemasa Hisatsugu
Hidehiro Senda
Hiroyuki Asanuma
Koji Oi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP2302379A priority Critical patent/JPS55115038A/en
Publication of JPS55115038A publication Critical patent/JPS55115038A/en
Pending legal-status Critical Current

Links

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE: To achieve higher accuracy of testing by disposing an imaging lens between shutter curtain travel face and photoelectric transducer.
CONSTITUTION: An imaging lens 30 is disposed between the shutter travel face on which shutter front, rear curtains 14a, 14b travel and a photoelectric transducer PC. The imaging lens 30 is let to form the image of the secondary light source existing between shutter-slit-forming edges on the photo detecting surface of the photoelectric transducer PC. As a result of this, the sharp shutter slit is imaged on the photo detecting surface of the photoelectric transducer PC and this results in that the light from the entire region of the objective lens 13 arrives, thus the decrease in the peak value of the photoelectric output and the dulling of the waveforms are prevented and the accuracy of measurement improved. If the imaging lens 30 is such a lens which magnifies the shutter slit and forms its image on the photoelectric transducer PC, the photoelectric output becomes close to square waves and the accuracy of measurement becomes much better.
COPYRIGHT: (C)1980,JPO&Japio
JP2302379A 1979-02-28 1979-02-28 Diffusion light source type shutter testing device Pending JPS55115038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2302379A JPS55115038A (en) 1979-02-28 1979-02-28 Diffusion light source type shutter testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2302379A JPS55115038A (en) 1979-02-28 1979-02-28 Diffusion light source type shutter testing device

Publications (1)

Publication Number Publication Date
JPS55115038A true JPS55115038A (en) 1980-09-04

Family

ID=12098877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2302379A Pending JPS55115038A (en) 1979-02-28 1979-02-28 Diffusion light source type shutter testing device

Country Status (1)

Country Link
JP (1) JPS55115038A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010240A (en) * 1983-06-30 1985-01-19 Copal Co Ltd Testing device for curtain travel of focal plane shutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010240A (en) * 1983-06-30 1985-01-19 Copal Co Ltd Testing device for curtain travel of focal plane shutter
JPH0563782B2 (en) * 1983-06-30 1993-09-13 Copal Co Ltd

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