Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1990-06-20

1992-06-23

Lobo, Ian J.

Optical: systems and elements

Optical modulator

Light wave directional modulation

G02B 530, G02F 100

Patent

active

051248352

ABSTRACT:
An optical scanning apparatus for scanning a beam of light from a light source over a target surface by a scanning mechanism to form an image on the target surface. The optical scanning apparatus includes an electro-optic lens provided in an optical path between the light source and the scanning mechanism, a plurality of electrodes being provided on top and bottom surfaces of the electro-optic lens for producing an electric field in a direction perpendicular to the direction of the optical path, and a voltage applying unit being connected to the electrodes. The electro-optic lens is made from an electro-optic medium, and has an ingress surface and and egress surface which are ground to exhibit an adequate electro-optic effect. The beam is cast on the target surface to produce a dot having an enlarged diameter in the vertical scanning direction and in the horizontal scanning direction due to the electro-optic effect of the electro-optic medium when the electric field is produced within the electro-optic lens.

REFERENCES:
patent: 3424513 (1969-01-01), Lotspeich
patent: 3736046 (1973-05-01), Zook
patent: 3892469 (1975-07-01), Lotspeich
patent: 4124273 (1978-11-01), Huignard et al.
patent: 4466703 (1984-08-01), Nishimoto
patent: 4614408 (1986-09-01), Mir et al.

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