JPS56144421A - Photometer - Google Patents

Photometer

Info

Publication number
JPS56144421A
JPS56144421A JP4902880A JP4902880A JPS56144421A JP S56144421 A JPS56144421 A JP S56144421A JP 4902880 A JP4902880 A JP 4902880A JP 4902880 A JP4902880 A JP 4902880A JP S56144421 A JPS56144421 A JP S56144421A
Authority
JP
Japan
Prior art keywords
photometry
traveling
front curtain
output
constant
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
JP4902880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6346402B2 (enrdf_load_stackoverflow
Inventor
Masabumi Yamazaki
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP4902880A priority Critical patent/JPS56144421A/ja
Publication of JPS56144421A publication Critical patent/JPS56144421A/ja
Publication of JPS6346402B2 publication Critical patent/JPS6346402B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/083—Analogue circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
JP4902880A 1980-04-14 1980-04-14 Photometer Granted JPS56144421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4902880A JPS56144421A (en) 1980-04-14 1980-04-14 Photometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4902880A JPS56144421A (en) 1980-04-14 1980-04-14 Photometer

Publications (2)

Publication Number Publication Date
JPS56144421A true JPS56144421A (en) 1981-11-10
JPS6346402B2 JPS6346402B2 (enrdf_load_stackoverflow) 1988-09-14

Family

ID=12819637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4902880A Granted JPS56144421A (en) 1980-04-14 1980-04-14 Photometer

Country Status (1)

Country Link
JP (1) JPS56144421A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525024A (en) * 1978-08-09 1980-02-22 Minolta Camera Co Ltd Exposure control unit of single-lens reflex camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525024A (en) * 1978-08-09 1980-02-22 Minolta Camera Co Ltd Exposure control unit of single-lens reflex camera

Also Published As

Publication number Publication date
JPS6346402B2 (enrdf_load_stackoverflow) 1988-09-14

Similar Documents

Publication Publication Date Title
JPS6489727A (en) Infrared light receiver
GB1373976A (en) Electrical control circuit
JPS56144421A (en) Photometer
JPS5738423A (en) Exposure display device of camera
JPS53106532A (en) Logic circuit
JPS5662231A (en) Control device for diaphragm of camera
AU506456B2 (en) Video Amplifier witha-C coupled voltage follower output stage
JPS5658306A (en) Automatic gain control circuit
JPS5567623A (en) Photometry unit
JPS53133304A (en) Gain control method for optical signal receiver
JPS52127114A (en) Muting circuit
JPS57204647A (en) Light receiving circuit
JPS57133707A (en) Bias circuit for power amplifier
JPS54113236A (en) Logical signal transfer circuit
JPS57212425A (en) Exposure device
JPS5796318A (en) Automatic exposure control device of ttl direct photometric camera
JPS5732109A (en) Automatic gain control amplifier
JPS5268314A (en) Optical finder system
JPS5218383A (en) Photometric circuit
GB962043A (en) Electrical control device
JPS57182724A (en) Exposure method for shutter and shutter device
JPS51136206A (en) Automatic light level controlling for light pcm relay
JPS5540464A (en) Electric shutter camera
JPS5465355A (en) Constant current circuit
JPS5370752A (en) Transmission gate