Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1988-10-17

1990-06-12

Arnold, Bruce Y.

350433, G02B 2610, G02B 306

Patent

active

049327321

ABSTRACT:
An optical scanning apparatus includes a light source and a polygon lens. The polygon lens consists of a plurality of cylindrical lenses. Each cylindrical lens has an inner concave surface and an outer concave surface. A light beam emitted from the light source passes through the inner concave surface without deflection, and then passes through the outer concave surface with some deflection. An angle of deflection is changed in accordance with rotation of the polygon mirror. The polygon mirror produces a scanning light beam which moves linearly.

REFERENCES:
patent: 3700911 (1972-10-01), Wildhaber

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