Head-up display with polarized light source and wide-angle...

Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

06952312

ABSTRACT:
A head-up display includes a projection system and a window having a target area where a reflective polarizer is positioned to reflect light from the projection system to a viewing area. Light from the projection system is p-polarized and strikes exposed window surface(s) at an acute angle to reduce or eliminate multiple or “ghost” images. The acute angle is closely matched to a Brewster angle of the exposed window surface(s). The reflective polarizer includes a multilayer stack with refractive indices of individual layers chosen to reflect p-polarized light substantially more than s-polarized light over a wide angular range that includes the acute angle. The reflective polarizer also can reflect infrared light to reduce cabin heating from solar radiation.

REFERENCES:
patent: 3609023 (1971-09-01), Turboult et al.
patent: 3709589 (1973-01-01), Lamb et al.
patent: 3711176 (1973-01-01), Alfrey, Jr. et al.
patent: 3885095 (1975-05-01), Wolfson et al.
patent: 3915548 (1975-10-01), Opittek et al.
patent: 4697879 (1987-10-01), Gerbe
patent: 4737001 (1988-04-01), Moss
patent: 4886328 (1989-12-01), Iino
patent: 4900133 (1990-02-01), Berman
patent: 4981332 (1991-01-01), Smith
patent: 4987410 (1991-01-01), Berman et al.
patent: 5008658 (1991-04-01), Russay et al.
patent: 5050966 (1991-09-01), Berman
patent: 5053755 (1991-10-01), Smith et al.
patent: 5103337 (1992-04-01), Schrenk et al.
patent: 5122614 (1992-06-01), Zalipsky
patent: 5325218 (1994-06-01), Willett et al.
patent: 5486949 (1996-01-01), Schrenk et al.
patent: 5497271 (1996-03-01), Mulvanny et al.
patent: 5502456 (1996-03-01), Korenaga et al.
patent: 5510913 (1996-04-01), Hashimoto et al.
patent: 5552935 (1996-09-01), Knoll et al.
patent: 5563620 (1996-10-01), Terai
patent: 5579139 (1996-11-01), Abileah et al.
patent: 5598175 (1997-01-01), Iino
patent: 5715028 (1998-02-01), Abileah et al.
patent: 5882774 (1999-03-01), Jonza et al.
patent: 5999314 (1999-12-01), Asakura et al.
patent: 6259559 (2001-07-01), Kobayashi et al.
patent: 6327084 (2001-12-01), Nishikawa et al.
patent: 2002/0186474 (2002-12-01), Weber et al.
patent: 37 39 062 (1988-11-01), None
patent: 1 180 710 (2002-02-01), None
patent: 2 689 651 (1993-10-01), None
patent: 08169257 (1996-07-01), None
patent: WO 95/17303 (1995-06-01), None
patent: WO 96/19347 (1996-06-01), None
U.S. Appl. No. 10/334,460, (Our File No. 58318US002) entitled “Optical Polarizing Films with Designed Color Shifts,” filed Dec. 31, 2002.
U.S. Appl. No. 10/334,836, (Our File No. 58319US002) entitled “P-Polarizer With Large Z-Axis Refractive Index Difference,” filed Dec. 31, 2002.
Weber et al., “Giant Birefringent Optics in Multilayer Polymer Mirrors”, Science, vol. 287, Mar. 31, 2000, pp. 2451-2456.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Head-up display with polarized light source and wide-angle... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Head-up display with polarized light source and wide-angle..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Head-up display with polarized light source and wide-angle... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3467209

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.