COMPOSITE OPTICAL ELEMENT AND PROJECTION OPTICAL APPARATUS

PROBLEM TO BE SOLVED: To provide a composite optical element in which the mechanical reliability and stability is improved because any void is not required therein, and to provide a projection optical apparatus which is provided with the composite optical element, is excellent in the efficiency of u...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAMOTO KAZUTOSHI, TEIJIDO JUAN MANUEL, OSHIMA YOSHIHIRO, KATO SUKETSUGU, WAJIKI ATSUHIKO, UEDA MITSUNORI, RIPOLL OLIVER M, TOYODA KIYOSHI
Format:	Patent
Sprache:	eng
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 CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a composite optical element in which the mechanical reliability and stability is improved because any void is not required therein, and to provide a projection optical apparatus which is provided with the composite optical element, is excellent in the efficiency of using light of a light source and is compact and rigid. SOLUTION: The composite optical element 41 comprises a plurality of optical elements 42, 43 and 44, wherein at least one of the optical elements is formed of the element 42 that changes an optical path and has such a constitution that the other optical elements 43, 44 are joined to the incident side surface or/and the emission side surface of the element 42 that changes the optical path via low-refractive index material layers 56A, 56B. COPYRIGHT: (C)2008,JPO&INPIT