JPS525588A - Light meter - Google Patents

Light meter

Info

Publication number
JPS525588A
JPS525588A JP8144975A JP8144975A JPS525588A JP S525588 A JPS525588 A JP S525588A JP 8144975 A JP8144975 A JP 8144975A JP 8144975 A JP8144975 A JP 8144975A JP S525588 A JPS525588 A JP S525588A
Authority
JP
Japan
Prior art keywords
light meter
changes
temparature
compensating
diodes
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
Application number
JP8144975A
Other languages
Japanese (ja)
Other versions
JPS5625966B2 (en
Inventor
Osamu Yoneda
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 JP8144975A priority Critical patent/JPS525588A/en
Priority to US05/700,849 priority patent/US4072962A/en
Priority to GB27514/76A priority patent/GB1558262A/en
Priority to DE2629854A priority patent/DE2629854C3/en
Priority to FR7620393A priority patent/FR2316585A1/en
Publication of JPS525588A publication Critical patent/JPS525588A/en
Publication of JPS5625966B2 publication Critical patent/JPS5625966B2/ja
Granted 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 offer a stable measuring light against temparature changes by compensating the logarithmic characteristic changes of diodes and transistors due to temperature changes.
JP8144975A 1975-07-03 1975-07-03 Light meter Granted JPS525588A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8144975A JPS525588A (en) 1975-07-03 1975-07-03 Light meter
US05/700,849 US4072962A (en) 1975-07-03 1976-06-29 Metering device
GB27514/76A GB1558262A (en) 1975-07-03 1976-07-01 Exposure metering device
DE2629854A DE2629854C3 (en) 1975-07-03 1976-07-02 Circuit arrangement for generating a signal which determines the exposure of a light-sensitive material
FR7620393A FR2316585A1 (en) 1975-07-03 1976-07-02 MEASURING DEVICE FOR PHOTOGRAPHY EQUIPMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8144975A JPS525588A (en) 1975-07-03 1975-07-03 Light meter

Publications (2)

Publication Number Publication Date
JPS525588A true JPS525588A (en) 1977-01-17
JPS5625966B2 JPS5625966B2 (en) 1981-06-16

Family

ID=13746700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8144975A Granted JPS525588A (en) 1975-07-03 1975-07-03 Light meter

Country Status (1)

Country Link
JP (1) JPS525588A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542597A (en) * 1978-09-22 1980-03-25 Carpigiani Bruto Mach Food liquid homogenizing and heat treating apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942080A (en) * 1972-08-30 1974-04-20
JPS5018543U (en) * 1973-06-14 1975-03-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942080A (en) * 1972-08-30 1974-04-20
JPS5018543U (en) * 1973-06-14 1975-03-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542597A (en) * 1978-09-22 1980-03-25 Carpigiani Bruto Mach Food liquid homogenizing and heat treating apparatus

Also Published As

Publication number Publication date
JPS5625966B2 (en) 1981-06-16

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