JPS5689023A - Photometry device - Google Patents

Photometry device

Info

Publication number
JPS5689023A
JPS5689023A JP16669479A JP16669479A JPS5689023A JP S5689023 A JPS5689023 A JP S5689023A JP 16669479 A JP16669479 A JP 16669479A JP 16669479 A JP16669479 A JP 16669479A JP S5689023 A JPS5689023 A JP S5689023A
Authority
JP
Japan
Prior art keywords
photodetectors
measured
circumferential
elements
center
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
JP16669479A
Other languages
Japanese (ja)
Inventor
Takaaki Terashita
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP16669479A priority Critical patent/JPS5689023A/en
Publication of JPS5689023A publication Critical patent/JPS5689023A/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

Landscapes

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

Abstract

PURPOSE:To make it easy to process a photodetector output by decreasing the number of photodetectors at a circumferential parts and by performing photometry so that while the center part of a screen is thin, the circumferential part will be rough. CONSTITUTION:The number of photodetectors arranged at the circumferential part of a screen is made less than that of photodetectors in the center. For example, A has the circumferential part measured by one element 10 and the center part measured by group 11 of 36 elements; B has the circumferential parts divided into four and while respective parts are measured by elements 12a-12d, the center part is measured by group 13 of 12 elements. Consequently, outputs of the photodetectors can easily be processed and correct exposure can be determined.
JP16669479A 1979-12-21 1979-12-21 Photometry device Pending JPS5689023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16669479A JPS5689023A (en) 1979-12-21 1979-12-21 Photometry device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16669479A JPS5689023A (en) 1979-12-21 1979-12-21 Photometry device

Publications (1)

Publication Number Publication Date
JPS5689023A true JPS5689023A (en) 1981-07-20

Family

ID=15836001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16669479A Pending JPS5689023A (en) 1979-12-21 1979-12-21 Photometry device

Country Status (1)

Country Link
JP (1) JPS5689023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6474425A (en) * 1987-09-16 1989-03-20 Nikon Corp Photodetecting element for light measurement of camera
US6385403B1 (en) 1998-10-30 2002-05-07 Olympus Optical Co., Ltd. Photometric apparatus for microscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6474425A (en) * 1987-09-16 1989-03-20 Nikon Corp Photodetecting element for light measurement of camera
US6385403B1 (en) 1998-10-30 2002-05-07 Olympus Optical Co., Ltd. Photometric apparatus for microscope
US6505004B2 (en) 1998-10-30 2003-01-07 Olympus Optical Co., Ltd. Photometric apparatus for microscope

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