Optical: systems and elements – Polarization without modulation – Polarization variation over surface of the medium
Reexamination Certificate
2007-11-27
2007-11-27
Allen, Stephone B. (Department: 2872)
Optical: systems and elements
Polarization without modulation
Polarization variation over surface of the medium
C359S569000, C353S020000
Reexamination Certificate
active
11531138
ABSTRACT:
The polarization beam splitter of the present invention includes a polarized beam splitting layer having a structure in which a plurality of gratings parallel to a first direction are periodically disposed in a second direction orthogonal to the first direction, and of light incident on the polarization beam splitter, light having a chiefly polarized component parallel to the first direction is transmitted therethrough, and light having a chiefly polarized component parallel to the second direction is reflected.
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Deer, Yi, et al. “Broadband Polarizing Beam Splitter Based on the Form Birefringence of a Subwavelenght Grating in the Quasi-Static Domain” Optics Letters Opt. Soc. America USA, vol. 29, No. 7, Apr. 1, 2004. pp. 754-756.
Lalanne, et al. “A Transmission Polarizing Beam Splitter Grating” Journal of Optics A: Pure and Applied Optics, vol. 1, 1999, pp. 215-219.
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Momoki Kazuhiko
Ohtaka Keiji
Allen Stephone B.
Canon Kabushiki Kaisha
Chapel Derek S.
Morgan & Finnegan , LLP
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