JPS5257873A - Photometer - Google Patents

Photometer

Info

Publication number
JPS5257873A
JPS5257873A JP50133803A JP13380375A JPS5257873A JP S5257873 A JPS5257873 A JP S5257873A JP 50133803 A JP50133803 A JP 50133803A JP 13380375 A JP13380375 A JP 13380375A JP S5257873 A JPS5257873 A JP S5257873A
Authority
JP
Japan
Prior art keywords
light
output corresponding
weak
photometer
strong
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
JP50133803A
Other languages
Japanese (ja)
Inventor
Shunichi Motonami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP50133803A priority Critical patent/JPS5257873A/en
Publication of JPS5257873A publication Critical patent/JPS5257873A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/44—Electric circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To electrically and automatically perform changing-over of sensitivity by detecting whether incident light is strong light or weak light, and changingover output corresponding to the strong light and output corresponding to the weak light so that the swing of meter pointer becomes identical.
JP50133803A 1975-11-06 1975-11-06 Photometer Pending JPS5257873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50133803A JPS5257873A (en) 1975-11-06 1975-11-06 Photometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50133803A JPS5257873A (en) 1975-11-06 1975-11-06 Photometer

Publications (1)

Publication Number Publication Date
JPS5257873A true JPS5257873A (en) 1977-05-12

Family

ID=15113387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50133803A Pending JPS5257873A (en) 1975-11-06 1975-11-06 Photometer

Country Status (1)

Country Link
JP (1) JPS5257873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124524U (en) * 1986-01-31 1987-08-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124524U (en) * 1986-01-31 1987-08-07

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