Beam scanner

Details Beam scanner Beam scanner

1989-03-27

1990-08-14

Arnold, Bruce Y.

350 383, 350 37, G02B 2610

Patent

active

049482130

ABSTRACT:
A light beam scanning apparatus includes a rotatable holographic disk having a hologram which is constructed by an interference of a reference wave and an objective wave, which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction. The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.

REFERENCES:
patent: 4393126 (1983-07-01), Kojima et al.
patent: 4810046 (1989-03-01), Yamagishi et al.
patent: 4848862 (1989-06-01), Yamazaki et al.
Applied Optics/vol. 22, No. 14/15, Jul. 1983 "Holographic Disk Scanners for Bow-Free Scanning".
Applied Optics/vol. 23, No. 12/15, Jun. 1984 "Flat-Field Linearized Scans with Reflection Dichromated Gelatin Holographic Gratings".
ICO-13 Conference Digest "Holographic Line Scanner Using Different Wavelength Method".

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