Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2007-06-12
2007-06-12
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S015000, C359S831000, C359S834000, C359S837000, C385S037000
Reexamination Certificate
active
11118978
ABSTRACT:
A grism based upon a grating with a given line frequency is configured such that a design wavelength will undergo either a specific total bend angle, a zero-degree total bend without lateral displacement, or a zero-degree total bend with a lateral displacement. Each configuration exhibits the same dispersion characteristics. Other design wavelengths, bend angles and displacements are possible through appropriate adjustment of grating frequency, prism geometry, and/or material(s). A specific design is disclosed using light with a +/−delta wavelength around a design wavelength of 795 nm. The invention may be used to disperse light at different wavelengths, including wavelengths associated with optical communications bands.
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Boutsikaris Leonidas
Gifford, Krass, Sprinkle Anderson & Citkowski, PC
Kaiser Optical Systems, Inc.
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