LIGHTING OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE COMPRISING SAME

Provided is a lighting optical system capable of increasing brightness without increasing etendue or device size. The lighting optical system includes first light source 10 for emitting first color light R and second color light G, and second light source 20 for emitting third color light B. First l...

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Bibliographische Detailangaben
1. Verfasser:	SAITOU, HIROYUKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM BLASTING 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 ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING HOLOGRAPHY INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a lighting optical system capable of increasing brightness without increasing etendue or device size. The lighting optical system includes first light source 10 for emitting first color light R and second color light G, and second light source 20 for emitting third color light B. First light source 10 includes semiconductor laser element 11a that emits a linearly polarized laser beam, excitation light generation means 14 for spatially and temporally separating the laser beam emitted from semiconductor laser element 11a to generate first excitation light E1 and second excitation light E2, said excitation light generation means 14 including an active diffraction element that transmits the incident laser beam in two different directions to separate it into first excitation light E1 and second excitation light E2 having an output direction different from that of first excitation light E1, first phosphor 12 that is excited by first excitation light E1 to emit first color light R, and second phosphor 13 that is excited by second excitation light E2 to emit second color light G.