NL6918855A - - Google Patents

Info

Publication number
NL6918855A
NL6918855A NL6918855A NL6918855A NL6918855A NL 6918855 A NL6918855 A NL 6918855A NL 6918855 A NL6918855 A NL 6918855A NL 6918855 A NL6918855 A NL 6918855A NL 6918855 A NL6918855 A NL 6918855A
Authority
NL
Netherlands
Application number
NL6918855A
Other versions
NL169232B (nl
NL169232C (nl
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 filed Critical
Publication of NL6918855A publication Critical patent/NL6918855A/xx
Publication of NL169232B publication Critical patent/NL169232B/xx
Application granted granted Critical
Publication of NL169232C publication Critical patent/NL169232C/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/347—DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits
    • 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
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4214—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for view-taking apparatus
    • 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
    • G03B7/087—Analogue circuits for control of both exposure time and aperture
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/70—Charge amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Exposure Control For Cameras (AREA)
  • Amplifiers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
NLAANVRAGE6918855,A 1968-12-16 1969-12-16 Belichtingsbesturingsinrichting voor een fotografische inrichting. NL169232C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78385568A 1968-12-16 1968-12-16

Publications (3)

Publication Number Publication Date
NL6918855A true NL6918855A (https=) 1970-06-18
NL169232B NL169232B (nl) 1982-01-18
NL169232C NL169232C (nl) 1982-06-16

Family

ID=25130608

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE6918855,A NL169232C (nl) 1968-12-16 1969-12-16 Belichtingsbesturingsinrichting voor een fotografische inrichting.

Country Status (7)

Country Link
US (1) US3620143A (https=)
JP (1) JPS4915821B1 (https=)
CA (1) CA928557A (https=)
DE (1) DE1963085C3 (https=)
FR (1) FR2026257A1 (https=)
GB (1) GB1293771A (https=)
NL (1) NL169232C (https=)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626825A (en) * 1970-05-28 1971-12-14 Texas Instruments Inc Radiation-sensitive camera shutter and aperture control systems
US3734632A (en) * 1970-10-31 1973-05-22 Minolta Camera Kk Current compensated detection circuits for photovoltaic cells
US3758796A (en) * 1971-06-10 1973-09-11 Texas Instruments Inc Photosensor control
US3849786A (en) * 1971-12-10 1974-11-19 Minolta Camera Kk Light integrating type light detector circuit with photovoltaic cell
DE2255329C3 (de) * 1972-11-11 1977-11-17 Kodak Ag Photographischer blendenverschluss
US3809992A (en) * 1972-11-13 1974-05-07 Mamiya Camera Circuit for storing a representation of an incident light quantity in a camera
JPS5521326B2 (https=) * 1972-11-16 1980-06-09
JPS5842415B2 (ja) * 1974-03-08 1983-09-20 ミノルタ株式会社 カメラノロシユツジヨウホウエンザンカイロ
US4129371A (en) * 1977-09-02 1978-12-12 Polaroid Corporation Electromagnet controlled scanning shutter blade arrangement
JPS5415736A (en) * 1978-06-14 1979-02-05 Yashica Co Ltd Photocurrent amplifing circuit
JPS5481785U (https=) * 1978-08-23 1979-06-09
US4241280A (en) * 1979-06-25 1980-12-23 Polaroid Corporation Light integrator circuit with built-in anticipation
US4255030A (en) * 1979-09-13 1981-03-10 Polaroid Corporation Camera with proportional fill flash quench strobe
US4346971A (en) * 1979-10-01 1982-08-31 Polaroid Corporation Photographic apparatus with controlled shutter blade time out
US4290683A (en) * 1980-09-22 1981-09-22 Polaroid Corporation Sonar responsive shutter blade time out control circuit
US4293208A (en) * 1980-10-20 1981-10-06 Polaroid Corporation Prebias for digital light integrator
US4306786A (en) * 1980-12-19 1981-12-22 Polaroid Corporation Photographic exposure control with scene light integration level determined as function of pre-exposure ambient scene light detect
US4355873A (en) * 1981-06-08 1982-10-26 Polaroid Corporation Photographic control system for varying both flash fire aperture and exposure termination in correspondence with film speed
US4717935A (en) * 1985-08-09 1988-01-05 Polaroid Corporation Electronic trim control for dual-photodetector exposure control system
US4876566A (en) * 1988-10-17 1989-10-24 Polaroid Corporation Camera having auto-trim exposure control
CN116809802B (zh) * 2023-07-07 2025-11-11 上海欧通电气有限公司 折弯保护方法及相关装置

Also Published As

Publication number Publication date
NL169232B (nl) 1982-01-18
US3620143A (en) 1971-11-16
DE1963085A1 (de) 1970-07-02
NL169232C (nl) 1982-06-16
CA928557A (en) 1973-06-19
DE1963085C3 (de) 1979-09-27
DE1963085B2 (de) 1979-01-25
JPS4915821B1 (https=) 1974-04-17
GB1293771A (en) 1972-10-25
FR2026257A1 (https=) 1970-09-18

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Legal Events

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