Optical: systems and elements – Polarization without modulation – Polarization variation over surface of the medium
Reexamination Certificate
2006-10-03
2006-10-03
Dunn, Drew A. (Department: 2872)
Optical: systems and elements
Polarization without modulation
Polarization variation over surface of the medium
C359S569000, C353S020000
Reexamination Certificate
active
07116478
ABSTRACT:
In a conventional polarization beam splitter, it has been difficult to improve the angle-dependence characteristic of polarized beam splitting efficiency even if the number of layers is increased. The polarization beam splitter of the present invention is a polarization beam splitter having a polarized beam splitting layer having 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, chiefly light of a polarized component parallel to the first direction is transmitted therethrough, and chiefly light of a polarized component parallel to the second direction is reflected.
REFERENCES:
patent: 4367921 (1983-01-01), Sawamua et al.
patent: 5042925 (1991-08-01), Broer et al.
patent: 6288840 (2001-09-01), Perkins et al.
patent: 6447120 (2002-09-01), Hansen et al.
patent: 6829090 (2004-12-01), Katsumata et al.
patent: 2005/0012996 (2005-01-01), Miyazawa et al.
patent: 00/57215 (2000-11-01), None
Lopez et al., Wave-plate polarizing beam splitter based on a form-birefringent multilayer grating, Optics Letters, vol. 23, No. 20, Oct. 15, 1998, pp. 1627-1629.
Lalanne et al., A transmissin polarizing beam splitter grating , Journal of Optics A: Pure and Applied Optics, vol. 1, 1999, pp. 215-219.
Honkanen M, et al. “Inverse Metal-Strip Polarizers” Applied Physics B: Laser and Optics, Springer International, Berlin, DE, vol. B68, No. 1. 1999, pp. 81-85.
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.
Momoki Kazuhiko
Ohtaka Keiji
Chapel Derek
Dunn Drew A.
Morgan & Finnegan L.L.P.
LandOfFree
Polarization beam splitter and optical system using the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polarization beam splitter and optical system using the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization beam splitter and optical system using the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3688739