Patent Number: 7,201,484

Title: Projector with foreign matter detecting means

Abstract: A projector has an image generating device for generating an image, and a housing, having the image generating device disposed therein and having an opening defined therein for emitting therethrough projection light representing the image from the image generating device. A projection mirror is mounted on an outer surface of the housing for reflecting the projection light to project the image onto a projection surface. An optical system is disposed in the opening for applying the projection light to the projection mirror. The projector also has a foreign matter detector for detecting foreign matter which enters a light path of the projection light between the optical system and the projection mirror.

Inventors: Kobayashi; Hiroyuki (Tokyo, JP), Furuichi; Kunitaka (Tokyo, JP)

Assignee: NEC Viewtechnology Ltd.

International Classification: G03B 21/16 (20060101)

Expiration Date: 2019-04-10 0:00:00