JPS52147776A - Light control unit - Google Patents

Light control unit

Info

Publication number
JPS52147776A
JPS52147776A JP6525677A JP6525677A JPS52147776A JP S52147776 A JPS52147776 A JP S52147776A JP 6525677 A JP6525677 A JP 6525677A JP 6525677 A JP6525677 A JP 6525677A JP S52147776 A JPS52147776 A JP S52147776A
Authority
JP
Japan
Prior art keywords
control unit
light control
light
unit
control
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.)
Pending
Application number
JP6525677A
Other languages
English (en)
Inventor
Shiyureetaa Heruberuto
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of JPS52147776A publication Critical patent/JPS52147776A/ja
Pending 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
JP6525677A 1976-06-03 1977-06-02 Light control unit Pending JPS52147776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2624866A DE2624866C3 (de) 1976-06-03 1976-06-03 Vorrichtung zur Steuerung der von einer Lichtquelle auf ein zu belichtendes Material abgegebenen Lichtmenge

Publications (1)

Publication Number Publication Date
JPS52147776A true JPS52147776A (en) 1977-12-08

Family

ID=5979685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6525677A Pending JPS52147776A (en) 1976-06-03 1977-06-02 Light control unit

Country Status (4)

Country Link
US (1) US4350438A (ja)
JP (1) JPS52147776A (ja)
DE (1) DE2624866C3 (ja)
GB (1) GB1585196A (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5652730A (en) 1979-10-05 1981-05-12 Olympus Optical Co Ltd Camera
JPS5653484A (en) 1979-10-05 1981-05-13 Olympus Optical Co Ltd Detecting device for integrated time
US4644165A (en) * 1983-02-22 1987-02-17 Colight, Inc. Integrating photometer
US5138368A (en) * 1988-10-25 1992-08-11 Greyhawk Systems, Inc. Fabrication of printed wiring boards by projection imaging
US5214274A (en) * 1992-07-24 1993-05-25 President And Fellows Of Harvard College Image sensor array with threshold voltage detectors and charged storage capacitors
CN111048616B (zh) * 2019-12-16 2021-06-18 重庆邮电大学 一种可变电阻

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB344900A (en) * 1929-09-10 1931-03-10 Cambridge Instr Co Ltd Improvements in and relating to photographic printing
US1973512A (en) * 1931-10-27 1934-09-11 Eastman Kodak Co Photographic printing apparatus
CH423476A (de) 1962-02-24 1966-10-31 Nottaris & Wagner Steuergerät für photographische Einrichtungen
US3222983A (en) * 1962-05-16 1965-12-14 Ouchi Satoru Automatic exposure timing means
GB1086300A (en) * 1965-12-22 1967-10-04 Pentacon Dresden Veb Apparatus for electronic exposure control in photographic cameras
GB1164794A (en) 1966-04-19 1969-09-24 H P Littlejohn Electronics Ltd A Improved Method and Apparatus for Controlling Photographic Exposures
GB1150117A (en) 1966-11-19 1969-04-30 George Joseph Mason Ladder stabilising device
US3687026A (en) 1969-11-15 1972-08-29 Minolta Camera Kk A light reflective shutter control apparatus
DE2046885A1 (de) 1970-09-23 1972-03-30 Agfa-Gevaert Ag, 5090 Leverkusen Fotografisches Kopiergerät
JPS5243365B2 (ja) * 1971-09-22 1977-10-29
GB1402336A (en) 1972-10-17 1975-08-06 Eskofot As Reproduction camera having a control circuit for automatic regulation of the exposure time
US4017180A (en) * 1975-08-07 1977-04-12 Adddressograph Multigraph Corporation Exposure control for copying machine

Also Published As

Publication number Publication date
GB1585196A (en) 1981-02-25
US4350438A (en) 1982-09-21
DE2624866C3 (de) 1979-02-08
DE2624866B2 (de) 1978-06-08
DE2624866A1 (de) 1977-12-08

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