Image display apparatus with increased raster scan rate of laser

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358 60, 358 63, 359217, H04N 574

Patent

active

051482851

ABSTRACT:
An image display apparatus having light beam sources for generating light beams, an optical modulator for modulating the light beams by image signals to be projected, a deflection device for deflecting the modulated light beams, the deflection device including a polygon mirror and an auxiliary reflection mirror provided near the polygon mirror such that the modulated light beams are reflected from the polygon mirror to said auxiliary reflection means and back toward the polygon mirror, a device for supplying the modulated light beams to the polygon mirror with predetermined angles relative to a rotational plane of the polygon mirror, such that the modulated light beams incident upon the polygon miror are reflected a plurality of times by the polygon mirror, and a projection device for projecting the modulated and deflected light beams from the deflection device on a screen or the like.

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patent: 4714956 (1987-12-01), Yin

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