NL6919671A - - Google Patents

Info

Publication number
NL6919671A
NL6919671A NL6919671A NL6919671A NL6919671A NL 6919671 A NL6919671 A NL 6919671A NL 6919671 A NL6919671 A NL 6919671A NL 6919671 A NL6919671 A NL 6919671A NL 6919671 A NL6919671 A NL 6919671A
Authority
NL
Netherlands
Application number
NL6919671A
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 NL6919671A publication Critical patent/NL6919671A/xx

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2013—Plural light sources
    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • 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
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Projection Apparatus (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
NL6919671A 1969-01-10 1969-12-31 NL6919671A (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79027969A 1969-01-10 1969-01-10

Publications (1)

Publication Number Publication Date
NL6919671A true NL6919671A (cg-RX-API-DMAC7.html) 1970-07-14

Family

ID=25150203

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6919671A NL6919671A (cg-RX-API-DMAC7.html) 1969-01-10 1969-12-31

Country Status (6)

Country Link
US (1) US3562580A (cg-RX-API-DMAC7.html)
JP (1) JPS4929460B1 (cg-RX-API-DMAC7.html)
DE (1) DE2001872B2 (cg-RX-API-DMAC7.html)
GB (1) GB1298443A (cg-RX-API-DMAC7.html)
NL (1) NL6919671A (cg-RX-API-DMAC7.html)
SE (1) SE338179B (cg-RX-API-DMAC7.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678286A (en) * 1971-03-22 1972-07-18 Eastman Kodak Co Automatic lamp changer and spare lamp indicator circuit
US3883777A (en) * 1972-08-02 1975-05-13 Tokai Rika Co Ltd Device for automatically compensating failure of a lamp
US3790846A (en) * 1972-12-18 1974-02-05 M Morris Automatic load monitoring and transfer circuit
US4127854A (en) * 1976-12-09 1978-11-28 Hazle Mary Rasmussen Back-up and alarm circuit system
US4712051A (en) * 1986-06-02 1987-12-08 Ultima Electronics Ltd. Adapter for switching from primary to standby device upon failure of primary device
DE3813035C2 (de) * 1988-04-19 1995-03-23 Leica Industrieverwaltung Automatische Lampenwechselvorrichtung für Projektoren
DE3920494A1 (de) * 1989-06-22 1991-01-03 Norbert Lemke Beleuchtungseinrichtung fuer optische systeme
US5430354A (en) * 1992-03-24 1995-07-04 North American Philips Corporation HID lamp and auxiliary lamp ballast using a single multiple function switch
DE19953290A1 (de) 1999-11-05 2001-05-10 Leica Microsystems Verfahren und Vorrichtung zur Überwachung des von einer Beleuchtungsvorrichtung abgestrahlten Lichtes für ein optisches Messgerät
US6483260B1 (en) 2001-07-23 2002-11-19 Hubbell Incorporated Apparatus for operating respective single lamps among multiple lamps coupled to the same ballast
US7245224B2 (en) * 2004-08-13 2007-07-17 Dell Products Lp Methods and systems for diagnosing projection device failure
US8482213B1 (en) 2009-06-29 2013-07-09 Panasonic Corporation Electronic ballast with pulse detection circuit for lamp end of life and output short protection
US8947020B1 (en) 2011-11-17 2015-02-03 Universal Lighting Technologies, Inc. End of life control for parallel lamp ballast

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700226A (en) * 1926-07-03 1929-01-29 Sperry Gyroscope Co Ltd Unattended beacon
US1987532A (en) * 1932-06-25 1935-01-08 Koito Genrokuro Device for changing lamps in an illuminating unit
US2892966A (en) * 1957-06-10 1959-06-30 Ca Nat Research Council Automatic lamp changers
US3146375A (en) * 1961-02-24 1964-08-25 Wallace & Tiernan Inc Lamp changer mechanism and control circuit therefor responsive to both light emission and filament continuity
US3471745A (en) * 1967-07-19 1969-10-07 Rca Corp Automatic lamp changing apparatus
US3457453A (en) * 1967-11-30 1969-07-22 Wallace & Tiernan Inc System for controllably energizing and monitoring the normalcy of successively selectable electrical load devices

Also Published As

Publication number Publication date
DE2001872B2 (de) 1973-02-15
SE338179B (cg-RX-API-DMAC7.html) 1971-08-30
GB1298443A (en) 1972-12-06
DE2001872A1 (de) 1970-07-16
JPS4929460B1 (cg-RX-API-DMAC7.html) 1974-08-05
US3562580A (en) 1971-02-09

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Legal Events

Date Code Title Description
BV The patent application has lapsed