NL164963B - Foto-electrische belichtingsmeter. - Google Patents

Foto-electrische belichtingsmeter.

Info

Publication number
NL164963B
NL164963B NL7313166.A NL7313166A NL164963B NL 164963 B NL164963 B NL 164963B NL 7313166 A NL7313166 A NL 7313166A NL 164963 B NL164963 B NL 164963B
Authority
NL
Netherlands
Prior art keywords
exposure meter
electrical exposure
photo electrical
photo
meter
Prior art date
Application number
NL7313166.A
Other languages
English (en)
Other versions
NL164963C (nl
NL7313166A (nl
Original Assignee
Asahi 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 Asahi Optical Co Ltd filed Critical Asahi Optical Co Ltd
Publication of NL7313166A publication Critical patent/NL7313166A/xx
Publication of NL164963B publication Critical patent/NL164963B/nl
Application granted granted Critical
Publication of NL164963C publication Critical patent/NL164963C/nl

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)
NL7313166.A 1972-10-12 1973-09-25 Foto-electrische belichtingsmeter. NL164963C (nl)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
NL7313166A NL7313166A (nl) 1974-04-16
NL164963B true NL164963B (nl) 1980-09-15
NL164963C NL164963C (nl) 1981-02-16

Family

ID=14729096

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7313166.A NL164963C (nl) 1972-10-12 1973-09-25 Foto-electrische belichtingsmeter.

Country Status (4)

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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025336B1 (nl) * 1967-11-28 1975-08-22

Also Published As

Publication number Publication date
NL164963C (nl) 1981-02-16
GB1397482A (en) 1975-06-11
DE2351420B2 (de) 1976-01-29
DE2351420A1 (de) 1974-04-25
JPS4974276U (nl) 1974-06-27
FR2203072B1 (nl) 1976-06-18
JPS5426067Y2 (nl) 1979-08-29
FR2203072A1 (nl) 1974-05-10
NL7313166A (nl) 1974-04-16

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee