Patent ID: 7984994

Claim:
An image display apparatus that displays an image by projecting a light modulated according to an image signal on a surface to be irradiated, the image display apparatus comprising: a housing; and a projection optical system that is housed in the housing, and projects the light modulated according to the image signal from an optical engine unit, the projection optical system including: a projection lens; a first mirror that reflects a light from the projection lens; and a second mirror that widens an angle of a light from the first mirror by reflecting the light, wherein the projection lens and the second mirror are arranged in such a manner that an optical axis of the projection lens substantially matches an optical axis of the second mirror, and shift the light from the optical engine unit to a specific side from the optical axis of the projection lens, the surface to be irradiated is on the outside of the housing, and a light traveling from the projection lens to the first mirror travels in a direction along the surface to be irradiated.