Projection type display apparatus

Details Projection type display apparatus Projection type display apparatus

2007-12-04

2007-12-04

Fuller, Rodney (Department: 2862)

Optics: image projectors

Lens support

Lens position adjustable

C353S046000

Reexamination Certificate

active

11067078

ABSTRACT:
A projection type display apparatus includes a projection portion for projecting an image onto a surface to be projected, a light receiving portion disposed apart from the projection portion by a base line length and used for detecting a reference image projected onto the surface to be projected, and a scanning portion for scanning the reference image on the surface to be projected in a direction of the base line length, in which the projection portion is focused based on information about a scanning position of the reference image upon predetermined detection with the light receiving portion. With the projection type display apparatus, a system can be configured with a simple processing circuit, and cost reduction can be realized.

REFERENCES:
patent: 6670603 (2003-12-01), Shimada et al.
patent: 9-197249 (1997-07-01), None

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