Hologram scale, apparatus for making hologram scale, moving memb

Details Hologram scale, apparatus for making hologram scale, moving memb Hologram scale, apparatus for making hologram scale, moving memb

1991-07-17

1993-07-06

Lerner, Martin

Optical: systems and elements

Holographic system or element

Copying by holographic means

359 26, 359 30, G03H 120

Patent

active

052259188

ABSTRACT:
An apparatus for making a hologram scale is comprised of a reference diffraction grating on which a light becomes incident and from or by which the incident light is emitted or reflected as a diffracted light, and a recording material, wherein at least two diffracted lights of the diffracted light are caused to interfere with each other as an object wave and a reference wave so as to form a hologram scale on the recording material. Further, an apparatus for making an assembled hologram scale, a hologram scale, an assembled hologram scale and a moving member having a hologram scale are also provided.

REFERENCES:
patent: 3647289 (1972-03-01), Weber
patent: 3758186 (1973-09-01), Brumm
patent: 3838903 (1974-10-01), Leith et al.
patent: 4206965 (1980-06-01), McGrew
patent: 4676645 (1987-06-01), Taniguchi et al.
patent: 4715670 (1987-12-01), Turukhano
patent: 4790612 (1988-12-01), Dickson

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