Patent ID: 9069238
Filing Date: 2015-06-30
Classification: G02B,G03B,G03F

Abstract:
1. An image displaying apparatus comprising: an image displaying element configured to form an image to be projected; and a projection optical system having a positive refractive power and configured to project the image to be projected onto a screen, wherein the projection optical system includes a lens optical system and a mirror optical system, the lens optical system including plural lens groups, the mirror optical system including a first mirror and a second mirror, the second mirror being a concave mirror, wherein an intermediate image of a pixel of the image displaying element is formed between the image displaying element and the second mirror, wherein the first mirror is held by a position adjusting part which adjusts a position thereof, the position adjusting part including a plurality of spacers which are inserted between a back face of the first mirror and a back supporting part, the position of the first mirror being adjusted by a thickness of each of the spacers, and wherein the thickness of each of the spacers is identical thereto and the first mirror is held to be capable of adjusting the position thereof in a direction perpendicular to a reflection surface thereof.