Hologram disk for deflecting a light beam

Details Hologram disk for deflecting a light beam Hologram disk for deflecting a light beam

1986-06-03

1987-12-15

Arnold, Bruce Y.

G02B 2610, G03H 104

Patent

active

047128526

ABSTRACT:
A hologram disk for deflecting a light beam in a hologram scanner includes a plurality of straight-line gratings formed by holograms in an annular pattern for deflecting the light beam. The line-to-line distance d.theta. between adjacent lines of each of said straight-line gratings is determined to meet, at least approximately, the following equation when said each straight-line grating is rotated through an angle .theta.R: ##EQU1## where .lambda. is the wavelength of the light beam and .alpha. is a proportionality constant. Therefore, the angle .theta.s through which the light beam is deflected is expressed by .theta.s=.alpha..multidot..theta.R.

REFERENCES:
patent: 4487472 (1974-12-01), Asano

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