Surveillance window

Details Surveillance window Surveillance window

2007-03-06

2007-03-06

Lavarias, Arnel (Department: 2872)

Optical: systems and elements

Extended spacing structure for optical elements

Extension of tubular element adjustable

C359S490020, C396S433000, C244S129300

Reexamination Certificate

active

10156364

ABSTRACT:
A surveillance window including at least one set of linear polarizer and quarter-waveplate and a reflecting surface. The surveillance window appears dull and opaque to a subject, while allowing a relatively high percentage of light to be transmitted to an observer. Various enhancements including an illuminator and detector, camouflaging, fire resistance, and improvements to the opacity are also described.

REFERENCES:
patent: 3544195 (1970-12-01), Cameron
patent: 3638060 (1972-01-01), Wacher
patent: 3711182 (1973-01-01), Jasgur
patent: 4112818 (1978-09-01), Garehime, Jr.
patent: 4123141 (1978-10-01), Schuler
patent: 4315258 (1982-02-01), McKnight et al.
patent: 4719720 (1988-01-01), Olsen
patent: 5016571 (1991-05-01), Totaro
patent: 5078470 (1992-01-01), Milman
patent: 5241380 (1993-08-01), Benson et al.
patent: 5373863 (1994-12-01), Prizio
patent: 5426891 (1995-06-01), Svehaug
patent: 5541419 (1996-07-01), Arackellian
patent: 5585946 (1996-12-01), Chern
patent: 5609938 (1997-03-01), Shields
patent: 5825542 (1998-10-01), Cobb, Jr. et al.
patent: 6064523 (2000-05-01), Budd et al.
patent: 6133856 (2000-10-01), Mc Cauley
patent: 6182402 (2001-02-01), Aalst
patent: 6185039 (2001-02-01), Allen et al.
patent: 6204904 (2001-03-01), Tillin et al.
patent: RE37709 (2002-05-01), Dukek
patent: 6449089 (2002-09-01), Moshrefzadeh et al.
patent: 6697195 (2004-02-01), Weber et al.
patent: 6771186 (2004-08-01), Boveja et al.
patent: 6824317 (2004-11-01), Finizio et al.
patent: 6915986 (2005-07-01), D'Alvia
patent: 33 30 382 (1985-04-01), None
patent: 2182969 (1986-11-01), None
Patent Abstracts of Japan, vol. 1996 (2) (Feb. 29, 1996) and JP 07 264448 A to Sony Corp. (Oct. 13, 1995).

Affiliated with

Also associated with

Rating

Surveillance window does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surveillance window, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surveillance window will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3727801