PROJECTION TYPE IMAGE DISPLAY APPARATUS

Provided is a technique capable of achieving a manually-operated lens shift mechanism in a space-saving manner in regard to a projection type image display apparatus. The lens shift mechanism includes a first base, a second base, a third base to which a projection lens is fixed, a first shift portio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OSHIMA, Hiroshi, INUI, Shinro
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 ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	Provided is a technique capable of achieving a manually-operated lens shift mechanism in a space-saving manner in regard to a projection type image display apparatus. The lens shift mechanism includes a first base, a second base, a third base to which a projection lens is fixed, a first shift portion moves the projection lens in a vertical direction by moving the second base in the vertical direction with respect to the first base, and a second shift portion which moves the projection lens in a horizontal direction by moving the third base in the horizontal direction with respect to the second base. The first shift portion is arranged along the vertical direction to be coaxial with a first manual operation portion and a first rotation shaft. The second shift portion is arranged along the vertical direction to be coaxial with a second manual operation portion and a second rotation shaft.