Polarizing beam splitter

Details Polarizing beam splitter Polarizing beam splitter

2005-08-09

2005-08-09

Nguyen, Judy (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S031000, C353S033000, C359S494010, C359S490020, C359S490020, C359S506000, C359S580000, C359S586000, C428S212000

Reexamination Certificate

active

06926410

ABSTRACT:
The present invention provides a unique polarizing beam splitter (PBS) that is suitable for use in projection systems and displays. The PBS contains at least one prism having at least one major surface and having a refractive index of at least about 1.6 and a birefringent film disposed on the major surface of the prism. The birefringent film is a multi-layer film having at layers of at least a first material and a second material. After uniaxial stretching, the film exhibits a refractive index difference of less than about 0.15 units in the stretched direction.

REFERENCES:
patent: 2403731 (1946-07-01), MacNeille
patent: 3801429 (1974-04-01), Schrenk et al.
patent: 4525413 (1985-06-01), Rogers et al.
patent: 5094788 (1992-03-01), Schrenk et al.
patent: 5094793 (1992-03-01), Schrenk et al.
patent: 5882774 (1999-03-01), Jonza et al.
patent: 5912762 (1999-06-01), Li et al.
patent: 5962114 (1999-10-01), Jonza et al.
patent: 6057961 (2000-05-01), Allen et al.
patent: 6101032 (2000-08-01), Wortman et al.
patent: 6111697 (2000-08-01), Merrill et al.
patent: 6113811 (2000-09-01), Kausch et al.
patent: 6183090 (2001-02-01), Nakanishi et al.
patent: 6210785 (2001-04-01), Weber et al.
patent: 6296927 (2001-10-01), Jonza et al.
patent: 6398364 (2002-06-01), Bryars
patent: 6451414 (2002-09-01), Wheatley et al.
patent: 6486997 (2002-11-01), Bruzzone et al.
patent: 6609795 (2003-08-01), Weber et al.
patent: 6721096 (2004-04-01), Bruzzone et al.
patent: 0 492 636 (1992-07-01), None
patent: WO PCT99/36248 (1999-07-01), None
patent: WO PCT00/07043 (2000-02-01), None
patent: WO PCT00/70386 (2000-11-01), None
“Merriam-Webster's Collegiate Dictionary, Tenth Edition”, copyright 2001, p. 233.
ASTM D-1238-00 Standard Test6 Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer.
ASTM D 1003-00 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics.
ASTM D 3418-99 Standard Test Method for Transition Temperatures of Plymers By Differential Scanning Calorimetry.

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