DK427488A - Lysaffoelende instrument - Google Patents

Lysaffoelende instrument

Info

Publication number
DK427488A
DK427488A DK427488A DK427488A DK427488A DK 427488 A DK427488 A DK 427488A DK 427488 A DK427488 A DK 427488A DK 427488 A DK427488 A DK 427488A DK 427488 A DK427488 A DK 427488A
Authority
DK
Denmark
Prior art keywords
light
sensing instruments
instruments
sensing
Prior art date
Application number
DK427488A
Other languages
English (en)
Other versions
DK427488D0 (da
Inventor
Peter James Betts
Original Assignee
Gen Electric Co Plc
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 Gen Electric Co Plc filed Critical Gen Electric Co Plc
Publication of DK427488D0 publication Critical patent/DK427488D0/da
Publication of DK427488A publication Critical patent/DK427488A/da

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F55/00—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto
    • H10F55/18—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the radiation-sensitive semiconductor devices and the electric light source share a common body having dual-functionality of light emission and light detection
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D17/00—Dark-room arrangements not provided for in the preceding groups; Portable dark-rooms
    • 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
    • G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
DK427488A 1987-07-29 1988-07-29 Lysaffoelende instrument DK427488A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8718007A GB2207500B (en) 1987-07-29 1987-07-29 Light sensing arrangement

Publications (2)

Publication Number Publication Date
DK427488D0 DK427488D0 (da) 1988-07-29
DK427488A true DK427488A (da) 1989-01-30

Family

ID=10621503

Family Applications (1)

Application Number Title Priority Date Filing Date
DK427488A DK427488A (da) 1987-07-29 1988-07-29 Lysaffoelende instrument

Country Status (5)

Country Link
US (1) US4906835A (da)
EP (1) EP0302655A3 (da)
JP (1) JPH01107117A (da)
DK (1) DK427488A (da)
GB (1) GB2207500B (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477326A (en) * 1994-06-30 1995-12-19 Bayer Corporation Spectrophotometer arrangement with multi-detector readhead
US5541704A (en) * 1994-08-08 1996-07-30 Eastman Kodak Company Camera with LED photometer
US9915732B2 (en) 2014-02-18 2018-03-13 Onvector Technology Llc Object detection systems
ES2846792T3 (es) 2014-02-18 2021-07-29 Onvector Tech Llc Sistemas de detección de objetos
US10585192B2 (en) 2014-02-18 2020-03-10 Onvector Technology Llc Object detection systems

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1101223A (en) * 1965-08-12 1968-01-31 Mining & Chemical Products Ltd A two-way communication system
DE2651619A1 (de) * 1976-11-12 1978-05-18 Karl Gerhard Dunkelkammerlampe
FR2387519A1 (fr) * 1977-04-15 1978-11-10 Thomson Csf Diode electroluminescente photodetectrice et lignes " bus " utilisant cette diode
FR2396419A1 (fr) * 1977-06-27 1979-01-26 Thomson Csf Diode capable de fonctionner en emetteur et detecteur de lumiere de la meme longueur d'onde alternativement
ZA775612B (en) * 1977-09-20 1979-08-29 D Vermeulen Improvements in photographic enlarging exposure meters
US4317232A (en) * 1979-01-12 1982-02-23 Deere & Company Fiber optic signal conditioning circuit
IT1120381B (it) * 1979-04-12 1986-03-19 Viptronic Gmbh Lampada per camera oscura
IT1154123B (it) * 1980-08-22 1987-01-21 Viptronic S A R A Lampada per camera oscura
US4673807A (en) * 1984-10-12 1987-06-16 Dai Nippon Insatso Kabushiki Kaisha Automatic range control method for an optical density/dot percentage measuring device
JPH0660845B2 (ja) * 1985-09-06 1994-08-10 ミノルタカメラ株式会社 色判別方法

Also Published As

Publication number Publication date
EP0302655A3 (en) 1991-03-06
US4906835A (en) 1990-03-06
GB2207500B (en) 1991-04-24
EP0302655A2 (en) 1989-02-08
DK427488D0 (da) 1988-07-29
GB2207500A (en) 1989-02-01
GB8718007D0 (en) 1987-09-03
JPH01107117A (ja) 1989-04-25

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment