Patent ID: 7293883

Claim:
A projector that projects projected light on a projection object to display an image, comprising: an image forming unit that is able to form a specified pattern image to display on the projection object; a zoom lens for which it is possible to change size of a projected light range with which projected light is projected; a zoom lens position detector that detects zoom position of the zoom lens; a control unit; a sensing unit that senses an image of the projection object; and an imaging control unit that calculates an exposure calculation value from the sensed image sensed by the sensing unit and performs exposure adjustments on the sensing unit so that the calculated exposure calculation value is approximately equivalent to an exposure target value set by the control unit, and wherein the control unit acquires the zoom position detected by the zoom lens position detector, and according to the acquired zoom position, changes an area of a specific color part shown by a specific color for the pattern image formed on the image forming unit.