Volume phase grating, a method for producing such a volume...

Details Volume phase grating, a method for producing such a volume... Volume phase grating, a method for producing such a volume...

2006-01-31

2006-01-31

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S566000, C385S037000, C385S024000

Reexamination Certificate

active

06992825

ABSTRACT:
In a volume phase grating, a plurality of phase gratings for causing a refractive index of a substrate having an incident surface and a launched surface facing each other to be cyclically changed between the incident surface and the launched surface are so formed as to be inclined at a specified angle to the incident surface. The volume phase grating is constructed such that an incident light is caused to be obliquely incident on the incident surface, and an angle of inclination of the phase gratings to the incident surface is set such that the incident light obliquely incident on the incident surface is refracted at the incident surface and perpendicularly incident on the phase gratings.

REFERENCES:
patent: 4714902 (1987-12-01), Rokni et al.
patent: 2002/0045104 (2002-04-01), Efimov et al.
patent: H09-283847 (1997-10-01), None

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