Method of maximizing the frequency of adjacent facet cross scan

Details Method of maximizing the frequency of adjacent facet cross scan Method of maximizing the frequency of adjacent facet cross scan

1992-04-27

1993-10-19

Lerner, Martin

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 25, 359209, 359900, G02B 532

Patent

active

052551083

ABSTRACT:
By modifying the exposure sequence of the facets in a hologon during manufacture, it is intended to maximize the spatial frequency of the error especially in hologons having large numbers of facets so that the error frequency is multiplied by a large factor, thereby greatly reducing the eye's ability to detect banding problems. This method also minimizes the adjacent facet error as far as is practical.

REFERENCES:
patent: 4455061 (1984-06-01), Case
patent: 4747646 (1988-05-01), Andrews
patent: 4787688 (1988-11-01), Rumfola

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