Holographic scanner including a rotary hologram disk between a f

Details Holographic scanner including a rotary hologram disk between a f Holographic scanner including a rotary hologram disk between a f

1995-05-12

1997-10-21

Henry, Jon W.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 17, G02B 532, G02B 2610

Patent

active

056802323

ABSTRACT:
A holographic scanner for scanning a surface with a light beam is provided. The holographic scanner includes a light source for emitting light used as the light beam, a front hologram for diffracting the light emitted from the light source to produce a first diffracted beam, a rotary hologram disk having a disk plane and rotatable around an axis thereof vertical to the disk plane, the rotary hologram disk including a plurality of scanning holograms arranged on the disk plane in a circumferential direction, the scanning holograms diffracting the first diffracted beam to produce a second diffracted beam, and a rear hologram for diffracting the second diffracted beam to produce a third diffracted beam, the third diffracted beam being used as the light beam for illuminating the scanning plane.

REFERENCES:
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patent: 4810046 (1989-03-01), Yamagishi et al.
patent: 4925262 (1990-05-01), Yamagishi et al.
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patent: 4973112 (1990-11-01), Kramer
patent: 5009502 (1991-04-01), Shih et al.
Ono, Y. et al., "Holographic disk scanners for bow-free scanning" Applied Optics (1983) 22(14/15):2132-2136.
Funoto, H., "Holographic scanner for laser printer" Ricoh Technical Report (Dec., 1983), No. 10, pp. 10-15. An English abstract and partial translation were previously submitted.

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