Projector, range finding method, and recording medium on which range finding method is recorded

摘要

A projector wherein chart images are stored in an image storing section, the chart images have range-finding light-dark patterns expressing particular shapes and also used as advertisements, the chart images are selectively read from the image storing section, the chart image is then projected and displayed on a screen using a projecting system including a spatial optical modulating element and a projection lens, then, the distances to measurement points on an image projected surface are measured using phase difference sensors and a range finding processing section, thus, until the range finding is finished, for example, a company log can be advertised by utilizing the pattern shape of the chart image projected and displayed on the screen.