Liquid crystal projection display having laser intensity varied

Details Liquid crystal projection display having laser intensity varied Liquid crystal projection display having laser intensity varied

1988-07-22

1989-03-07

Miller, Stanley D.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 65, 350 691, 250331, 340713, 340714, 372 21, 372 26, 372 31, 372 33, G02F 113

Patent

active

048100641

ABSTRACT:
The liquid crystal is written with a laser beam. The laser beam generated by a laser source is applied through an optical control unit such as galvanometer mirrors to the liquid crystal. The intensity of the laser beam applied to the liquid crystal is controlled by a laser beam intensity varying unit. A writing control unit controls the mechanical displacement caused by the optical axis control unit and controls the laser beam intensity varying unit. The laser beam energy applied to the liquid crystal can be maintained constant, thus enabling a constant written line width even during acceleration and deceleration of the optical axis control unit.

REFERENCES:
patent: 2515054 (1950-07-01), Pagliarulo
patent: 3717772 (1973-02-01), Engman
patent: 3719780 (1973-03-01), Gazzad et al.
patent: 4180307 (1979-12-01), Tateoka
patent: 4211474 (1980-07-01), LeGoff
patent: 4460249 (1984-07-01), Vincent
patent: 4482902 (1984-11-01), Bailey et al.
patent: 4639722 (1987-01-01), Urabe et al.
Dewey et al., "Laser Addressed Liquid Crystal Projection Displays" Proc. of SID, vol. 19/1, First Quarter 1978.

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