PROJECTION TYPE DISPLAY SYSTEM, PROJECTION UNIT USED THEREIN AND LAMP SWITCHING DEVICE FOR PROJECTOR

PROBLEM TO BE SOLVED: To miniaturize a lamp switching device for a projector. SOLUTION: This system is equipped with a moving frame 10 holding two lamps 2a and 2b side by side on a line, a slide guide 6 supporting the frame 10 movably in a direction 2d where the lamps are arranged side by side on a...

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Bibliographic Details
Main Authors NAKAO MITSUYA, SATO TADASHI, YABE AKIO, KANBARA TAKASHI, TANAKA KEIICHIRO
Format Patent
LanguageEnglish
Published 11.05.2001
Edition7
Subjects
ACCESSORIES THEREFOR
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
ELECTROGRAPHY
FREQUENCY-CHANGING
HOLOGRAPHY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHOTOGRAPHY
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:PROBLEM TO BE SOLVED: To miniaturize a lamp switching device for a projector. SOLUTION: This system is equipped with a moving frame 10 holding two lamps 2a and 2b side by side on a line, a slide guide 6 supporting the frame 10 movably in a direction 2d where the lamps are arranged side by side on a line, a lamp moving motor 9 moving the frame 10, an ammeter 43 detecting the turn-off of the lamp 2a positioned at a projection feasible position, and a lamp switching control unit 41 driving the motor 9 when the turn-off of the lamp 2a is detected by the ammeter 43.
Bibliography:Application Number: JP19990309566