Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2005-07-26
2005-07-26
Robinson, Mark A. (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S015000, C359S571000
Reexamination Certificate
active
06922286
ABSTRACT:
A diffractive element used in conjunction with a grating to move a desired order beam off-axis, thereby reducing interference by undesired orders. Use of the off-axis grating allows a more uniform beam in the presence of manufacturing defects, such as etch depth errors. The diffractive element used with the off-axis grating may include a beam shaper, a one-dimensional beam splitter, or a two-dimensional beam splitter.
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Case et al., “Multifacet holographic optical elements for wave front transformations”, Applied Optics, vol. 20, No. 15, (Aug. 1 1981), pp. 2670-2675.
Amari Alessandro
Mems Optical Inc.
Olds, Maier & Richardson PLLC
Robinson Mark A.
LandOfFree
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