JPS57141522A - Photometric circuit of camera - Google Patents

Photometric circuit of camera

Info

Publication number
JPS57141522A
JPS57141522A JP2618181A JP2618181A JPS57141522A JP S57141522 A JPS57141522 A JP S57141522A JP 2618181 A JP2618181 A JP 2618181A JP 2618181 A JP2618181 A JP 2618181A JP S57141522 A JPS57141522 A JP S57141522A
Authority
JP
Japan
Prior art keywords
voltage
photodetector
resistance
amplifying circuit
cds
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
JP2618181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6158766B2 (enrdf_load_stackoverflow
Inventor
Koji Matsushima
Kazuo Shiozawa
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP2618181A priority Critical patent/JPS57141522A/ja
Publication of JPS57141522A publication Critical patent/JPS57141522A/ja
Publication of JPS6158766B2 publication Critical patent/JPS6158766B2/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)
  • Exposure Control For Cameras (AREA)
JP2618181A 1981-02-26 1981-02-26 Photometric circuit of camera Granted JPS57141522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2618181A JPS57141522A (en) 1981-02-26 1981-02-26 Photometric circuit of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2618181A JPS57141522A (en) 1981-02-26 1981-02-26 Photometric circuit of camera

Publications (2)

Publication Number Publication Date
JPS57141522A true JPS57141522A (en) 1982-09-01
JPS6158766B2 JPS6158766B2 (enrdf_load_stackoverflow) 1986-12-13

Family

ID=12186345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2618181A Granted JPS57141522A (en) 1981-02-26 1981-02-26 Photometric circuit of camera

Country Status (1)

Country Link
JP (1) JPS57141522A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6158766B2 (enrdf_load_stackoverflow) 1986-12-13

Similar Documents

Publication Publication Date Title
CA2097729A1 (en) Power control device wherein a bias voltage in level detection is given a constant difference from a detected voltage
DE69012982D1 (de) Signalpegel-Messanordnung mit Offset-Korrekturmitteln.
JPS57141522A (en) Photometric circuit of camera
JPS54151445A (en) Camera
JPS57112089A (en) Light output control circuit
JPS55108019A (en) Reference voltage generator
US4160160A (en) Circuit for integrating a quantity of light in an automatic control type flash unit
US4037237A (en) Exposure control apparatus
JPS5654419A (en) Photometric type automatic change-over device of camera
JPS5525243A (en) Color temperature correction device
JPS57207448A (en) Automatic controlling circuit for multiplication factor of avalanche photo diode
JPS56149180A (en) Flicker reducing method
JPS5761393A (en) Color output controller
EP0067686A3 (en) Power supply device for atomizer used in atomic absorptiometer
JPS5785039A (en) Automatic dimming electronic flash device
JPS57146325A (en) Constant current circuit
JPS567007A (en) Coating film thickness measuring apparatus
JPS56147533A (en) Light receiving and amplifying circuit
JPS57179650A (en) Optical detector
JPS5524682A (en) Optical signal detector
JPS55114917A (en) Agc circuit
SU1023277A1 (ru) Автоматический регул тор крутизны характеристик фотодатчика
Ozek et al. Reduction of ambient light effect on ecartometry for a laser-illuminated target
JPS5799875A (en) Image pickup device
JPS57107619A (en) Low-frequency amplifying circuit