GB1292314A - Illumination arrangement for subjects which are to be recorded and/or reproduced in colour - Google Patents

Illumination arrangement for subjects which are to be recorded and/or reproduced in colour

Info

Publication number
GB1292314A
GB1292314A GB48531/69A GB4853169A GB1292314A GB 1292314 A GB1292314 A GB 1292314A GB 48531/69 A GB48531/69 A GB 48531/69A GB 4853169 A GB4853169 A GB 4853169A GB 1292314 A GB1292314 A GB 1292314A
Authority
GB
United Kingdom
Prior art keywords
lamp
voltage
voltage applied
compensation
controlled
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.)
Expired
Application number
GB48531/69A
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.)
SVERIGES RADIO AB
Original Assignee
SVERIGES RADIO AB
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 SVERIGES RADIO AB filed Critical SVERIGES RADIO AB
Publication of GB1292314A publication Critical patent/GB1292314A/en
Expired 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
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Projection-Type Copiers In General (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

1292314 Systems of lighting SVERIGES RADIO AB 2 Oct 1969 [9 Oct 1968] 48531/69 Heading F4R [Also in Division H2] A system of lighting suitable for illuminating subjects to be televised or photographed in colour and in which the intensity of the light can be varied without significantly altering its spectral composition comprises a relatively high powered main lamp of the incandescent filament type which can be dimmed by decreasing the voltage at which it is run and a relatively low powered compensation lamp, also of the incandescent filament type, which can be made to run at a varying voltage, and consequently at a varying colour temperature, to compensate for the decrease in the colour temperature of the main lamp. As the voltage applied to the main lamp is decreased from the normal value to the point at which the lamp is extinguished, the voltage applied to the compensation lamp is first increased from the normal value to a maximum and then decreased to normal again. the rate of change being predetermined according to the observed characteristics of the lamp. In a first embodiment, Fig. 4, the main lamp 10 is controlled by a conventional rheostat 13 and the compensation lamp 11 is controlled by a specially wound rheostat 14 with the turns unequally spaced to produce the required variation in voltage, the sliders of the two rheostats being linked together. In a second embodiment (Fig. 5, not shown) the rheostats are replaced by voltage dividers which regulate controlled rectifiers in the lamp circuits, and in a third embodiment, Fig. 7, the voltage applied to the main lamp 10 is regulated by a voltage divider 50 which controls a pair of controlled rectifiers 35, 36 through a pulse-emitting device 54. This voltage is also applied to a transformer primary 40 the secondary windings 41, 42 of which are connected to respective fullwave rectifier bridges 43, 44 and thence to batteries of Zener diodes 70-74 and 80. These diodes control the voltage drop across a resistor 86 which in turn controls the voltage applied by an amplifier 64 to the pulse-emitting device 60 which regulates the voltage applied to the compensation lamp 11 by a pair of controlled rectifiers 58, 59.
GB48531/69A 1968-10-09 1969-10-02 Illumination arrangement for subjects which are to be recorded and/or reproduced in colour Expired GB1292314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13595/68A SE342966B (en) 1968-10-09 1968-10-09

Publications (1)

Publication Number Publication Date
GB1292314A true GB1292314A (en) 1972-10-11

Family

ID=20297655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48531/69A Expired GB1292314A (en) 1968-10-09 1969-10-02 Illumination arrangement for subjects which are to be recorded and/or reproduced in colour

Country Status (12)

Country Link
US (1) US3644785A (en)
JP (1) JPS5142491B1 (en)
AT (1) AT297849B (en)
BE (1) BE739994A (en)
CH (1) CH512778A (en)
DE (1) DE1950581C3 (en)
DK (1) DK124780B (en)
FR (1) FR2020201A1 (en)
GB (1) GB1292314A (en)
NL (1) NL6915277A (en)
NO (1) NO125518B (en)
SE (1) SE342966B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1492441A2 (en) * 2002-04-10 2005-01-05 Karl Storz Endoscopy-America, Inc. Apparatus and method for powering portable battery operated light sources
GB2421367A (en) * 2004-12-20 2006-06-21 Stephen Bryce Hayes Lighting system with variable colour temperature

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7112208A (en) * 1971-09-04 1973-03-06
JPS4940140A (en) * 1972-08-18 1974-04-15
US3984726A (en) * 1975-04-25 1976-10-05 Ppg Industries, Inc. Ultraviolet light system having means for maintaining constant intensity light profile
US4408838A (en) * 1979-03-14 1983-10-11 Neal Factor System for the regulation of light for a sequential picture apparatus
JPS60126982U (en) * 1984-02-06 1985-08-26 杉崎　則佳 plug removal tool
DE3526590A1 (en) * 1985-07-25 1986-01-02 Zinnecker, Elisabeth, 7891 Lottstetten Method and arrangement for controlling an illumination system
US5237244A (en) * 1988-12-20 1993-08-17 Bertenshaw David R Electric lighting and power controllers therefor
GB2226431B (en) * 1988-12-20 1992-08-12 Strand Lighting Ltd Electric lighting and power controllers therefor
DE19829270B4 (en) * 1997-07-02 2006-03-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH lamp
US7014336B1 (en) * 1999-11-18 2006-03-21 Color Kinetics Incorporated Systems and methods for generating and modulating illumination conditions
US20030133292A1 (en) * 1999-11-18 2003-07-17 Mueller George G. Methods and apparatus for generating and modulating white light illumination conditions
US6806659B1 (en) 1997-08-26 2004-10-19 Color Kinetics, Incorporated Multicolored LED lighting method and apparatus
US7038398B1 (en) * 1997-08-26 2006-05-02 Color Kinetics, Incorporated Kinetic illumination system and methods
US7161313B2 (en) * 1997-08-26 2007-01-09 Color Kinetics Incorporated Light emitting diode based products
US7598686B2 (en) 1997-12-17 2009-10-06 Philips Solid-State Lighting Solutions, Inc. Organic light emitting diode methods and apparatus
US20020176259A1 (en) 1999-11-18 2002-11-28 Ducharme Alfred D. Systems and methods for converting illumination
US20060076908A1 (en) * 2004-09-10 2006-04-13 Color Kinetics Incorporated Lighting zone control methods and apparatus
CN114820385B (en) * 2022-05-20 2023-06-23 河南科技学院 Locally adaptive underwater image color correction method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1492441A2 (en) * 2002-04-10 2005-01-05 Karl Storz Endoscopy-America, Inc. Apparatus and method for powering portable battery operated light sources
EP1492441A4 (en) * 2002-04-10 2010-09-08 Storz Endoscopy America Karl Apparatus and method for powering portable battery operated light sources
GB2421367A (en) * 2004-12-20 2006-06-21 Stephen Bryce Hayes Lighting system with variable colour temperature
GB2421367B (en) * 2004-12-20 2008-09-03 Stephen Bryce Hayes Lighting apparatus and method
US7719209B2 (en) 2004-12-20 2010-05-18 Stephen Bryce Hayes Lighting apparatus and method

Also Published As

Publication number Publication date
DK124780B (en) 1972-11-20
US3644785A (en) 1972-02-22
DE1950581A1 (en) 1970-04-23
FR2020201A1 (en) 1970-07-10
JPS5142491B1 (en) 1976-11-16
SE342966B (en) 1972-02-21
CH512778A (en) 1971-09-15
DE1950581C3 (en) 1975-05-15
AT297849B (en) 1972-04-10
NL6915277A (en) 1970-04-13
BE739994A (en) 1970-03-16
DE1950581B2 (en) 1974-09-19
NO125518B (en) 1972-09-18

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees