Hologon and method of manufacturing a hologon

Details Hologon and method of manufacturing a hologon Hologon and method of manufacturing a hologon

1987-09-28

1988-11-29

Corbin, John K.

350 375, G02B 532, G02B 2610, G03H 104, G03H 126

Patent

active

047876883

ABSTRACT:
A hologon and its method of manufacture are described. Adjacent facets of the hologon are overlapped so that the diffraction effects created by boundaries of the mask which defines the extent of the interference pattern, which is a precursor of the diffraction grating, are overlapped, thereby increasing the duty cycle.

REFERENCES:
patent: 4455061 (1984-06-01), Case

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