Projector, range finding method, and recording medium on...

Details Projector, range finding method, and recording medium on... Projector, range finding method, and recording medium on...

2008-04-22

2008-04-22

Mahoney, Christopher (Department: 2862)

Optics: image projectors

Distortion compensation

C353S070000

Reexamination Certificate

active

11066572

ABSTRACT:
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.

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