Optical system for laser beam scanner

Details Optical system for laser beam scanner Optical system for laser beam scanner

1992-07-01

1994-05-03

Bertsch, Richard A.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 17, G02B 2710

Patent

active

053092619

ABSTRACT:
An optical system for a laser beam scanner, is capable of reducing the manufacturing cost by substituting a holographic optical element for a toric lens, comprising a light source for generating a laser beam, a rotary polyhedron for collimating the laser beam from the light source and focusing and reflecting the laser beam; and a compensating lens array, including a concave lens for receiving the laser beam from the rotary polyhedron and a convex lens attached with a holographic optical element, for compensating the laser beam reflected from the rotary polyhedron and scanning the compensated laser beam to a drum.

REFERENCES:
patent: 4585297 (1986-04-01), Hamaguchi et al.
patent: 5124821 (1992-06-01), Antier et al.
European Search Report and Annex.
"Recent Developments in Diffractive Optics" by K. Firth, GEC Journal of Research, vol. No. 3 No. 1, 1985, pp. 1.varies.10, Jun. 1985.
"Holographic Zone Plates for f..theta. and Collimating Lenses" by Y. Ono et al., Applied Optics, vol. 25 No. 5, Mar. 1, 1986, pp. 794-797.
English language abstract of Japanese Appln. No. 59-121371, Jul. 1984.

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