Patent ID: 8246176

Claim:
A projection display device comprising: a projection lens section to which light modulated by a light modulating element is entered; a mirror section which receives light emitted from the projection lens section and reflects the received light to a projection plane that is external from the projection display device and on which an image is projected; a main body cabinet that houses the projection lens section and the mirror section, the main body cabinet including a V-shaped concave groove that is concave toward an interior of the main body cabinet, the V-shaped concave groove including a first sloped portion and a second sloped portion that slopes in a direction of the light reflected by the mirror section; a projection port provided in the main body cabinet through which the light reflected by the mirror section passes to the projection plane, the projection port being provided in the first sloped portion of the V-shaped concave groove in the main body cabinet; and an operation section which displaces a lens in the projection lens section, wherein an optical path of the light reflected by the mirror section through the projection port is directed to pass over a portion of the main body cabinet that houses the projection lens section, and wherein the operation section is disposed in a side of the main body cabinet, other than a side of the main body cabinet in which the projection port is disposed, and the operation section is disposed so that the operation section does not hinder an optical path of the light that has been reflected by the mirror section through the projection port provided in the main body cabinet.