Patent ID: 7070283

Claim:
A projection apparatus comprising: a projection section for projecting an image corresponding to an input image signal; a distance measuring section for measuring respective distances to positions on an image projection plane made by the projection section; a keystone correction section for performing keystone correction on an image projected by the projection section so that the projected image is formed into a rectangular shape having a proper aspect ratio, based on the distances obtained by the distance measuring section; a focus control section for controlling a focus position of the image projected by the projection section based on at least one of the distances obtained by the distance measuring section; a control section for issuing an instruction to carry out processings by the distance measuring section, the keystone correction section and the focus control section; and a temperature sensing section for sensing a temperature of a light source lamp of the projection section; wherein the control section automatically issues the instruction when the temperature sensing section detects that the temperature of the lamp is more than a predetermined value after vower of the apparatus is turned on.