FR2203072A1 - - Google Patents

Info

Publication number
FR2203072A1
FR2203072A1 FR7336556A FR7336556A FR2203072A1 FR 2203072 A1 FR2203072 A1 FR 2203072A1 FR 7336556 A FR7336556 A FR 7336556A FR 7336556 A FR7336556 A FR 7336556A FR 2203072 A1 FR2203072 A1 FR 2203072A1
Authority
FR
France
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
FR7336556A
Other languages
French (fr)
Other versions
FR2203072B1 (nl
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2203072A1 publication Critical patent/FR2203072A1/fr
Application granted granted Critical
Publication of FR2203072B1 publication Critical patent/FR2203072B1/fr
Expired 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
FR7336556A 1972-10-12 1973-10-12 Expired FR2203072B1 (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972118142U JPS5426067Y2 (nl) 1972-10-12 1972-10-12

Publications (2)

Publication Number Publication Date
FR2203072A1 true FR2203072A1 (nl) 1974-05-10
FR2203072B1 FR2203072B1 (nl) 1976-06-18

Family

ID=14729096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7336556A Expired FR2203072B1 (nl) 1972-10-12 1973-10-12

Country Status (4)

Country Link
JP (1) JPS5426067Y2 (nl)
FR (1) FR2203072B1 (nl)
GB (1) GB1397482A (nl)
NL (1) NL164963C (nl)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1593389A (nl) * 1967-11-28 1970-05-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1593389A (nl) * 1967-11-28 1970-05-25

Also Published As

Publication number Publication date
JPS4974276U (nl) 1974-06-27
NL164963B (nl) 1980-09-15
NL7313166A (nl) 1974-04-16
GB1397482A (en) 1975-06-11
DE2351420B2 (de) 1976-01-29
DE2351420A1 (de) 1974-04-25
JPS5426067Y2 (nl) 1979-08-29
NL164963C (nl) 1981-02-16
FR2203072B1 (nl) 1976-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse