Optical scanning system

Details Optical scanning system Optical scanning system

1992-06-26

1993-08-17

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359221, G02B 2608

Patent

active

052374440

ABSTRACT:
In a scanner system (10) in which two scanners (14 and 16) deflect light from a laser (12) in orthogonal directions along a cylindrical object surface (18), the light from the laser is focused by a combination of an image-forming lens (24) disposed between the laser (12) and the first scanner (14) and a negative field-flattening lens (28) disposed between the two scanners (14 and 16) so as to compensate the effective focal length for the change in light-path length that results from deflection by the first scanner (14).

REFERENCES:
patent: 4283145 (1981-08-01), Miyazawa
patent: 4307930 (1981-12-01), Saito
patent: 4525749 (1985-06-01), Maeda et al.
patent: 4750045 (1988-06-01), Ohara et al.
patent: 4797749 (1989-01-01), Paulsen
patent: 4838632 (1989-06-01), Manian
patent: 5150249 (1992-09-01), Montagu
Joseph Cohen-Sabban, Yael Cohen-Sabban, and Andre Roussel, "Distortion-free 2-D Space and Surface Scanners Using Light Deflectors", Dec. 15, 1983, vol. 22, No. 24, Applied Optics pp. 3925-3942.

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