Optical beam scanning system having an image-forming system for

Details Optical beam scanning system having an image-forming system for Optical beam scanning system having an image-forming system for

1991-09-20

1993-01-26

Pascal, Robert J.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359205, G02B 2600

Patent

active

051826682

ABSTRACT:
A first image-forming system includes first and second lens systems which are disposed from a light source to a deflector respectively. The first lens system has a positive power along a second direction so as to converge a diverging light beam from the light source onto the deflector with respect to the second direction. With respect to a first direction being perpendicular to the second direction, the first lens system has zero or a negative power while the second lens system has a positive power so that the focal point of the first image-forming system is located at the light source. Thus, a collimated light beam in the first direction from the first image-forming system is directed to the deflector.

REFERENCES:
patent: 4024341 (1977-05-01), Takahashi
patent: 4123135 (1978-10-01), Rabedeau
patent: 4585296 (1986-04-01), Minoura et al.
patent: 4775205 (1988-10-01), Muramatsu
patent: 5025268 (1991-06-01), Arimoto et al.

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