Optical: systems and elements – Holographic system or element – Having particular recording medium
Reexamination Certificate
2006-11-14
2006-11-14
Boutsikaris, Leonidas (Department: 2872)
Optical: systems and elements
Holographic system or element
Having particular recording medium
C359S004000, C430S001000, C430S002000
Reexamination Certificate
active
07136205
ABSTRACT:
A volume-phase holographic diffraction grating device is provided that can be optimized for use with very short wavelength light, such as light in the ultraviolet (UV) spectral region. The device comprises a cover and a substrate, both formed of a glass material. A layer of gelatin material is disposed between the cover and the substrate member, and has holographically-formed varying indexes of refraction formed therein to set up the interference pattern. The gelatin material has a thickness between 0.5 and 1 micron that makes it suitable for diffracting light in the UV spectral region, long-lived, and very efficient.
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Bernstein et al. “A Volume-Phase Holographic Spectrograph for the Magellan Telescopes”, Department of Astronomy, University of Michigan.
Boutsikaris Leonidas
ITT Manufacturing Enterprises Inc.
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