Convergence correction apparatus for a video projection system

Details Convergence correction apparatus for a video projection system Convergence correction apparatus for a video projection system

1991-06-03

1993-04-06

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 64, 358 10, 31536813, H04N 931

Patent

active

052008150

ABSTRACT:
An image correction apparatus in which adjustment of a projector unit for widening projection with a plurality of projector tubes can be eliminated by setting specifications of the projecting optical system and by automatically calculating converging angles at which images of light of respective colors are formed on a screen, so as to automatically compute various correction data for geometrical distortion, luminance reduction and focus error.

REFERENCES:
patent: 4754204 (1988-06-01), Ando
patent: 4816908 (1989-03-01), Colineau
patent: 4835602 (1989-05-01), Duwaer
patent: 4999703 (1991-03-01), Henderson

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