Optical: systems and elements – Glare or unwanted light reduction – With mirror
Reexamination Certificate
2004-12-16
2009-02-24
Nguyen, Thong (Department: 2872)
Optical: systems and elements
Glare or unwanted light reduction
With mirror
C359S601000, C359S359000, C385S131000
Reexamination Certificate
active
07494232
ABSTRACT:
Method for limiting amount of radiation impinging on a radiation-sensitive detector device by directing radiation toward the detector, permitting the radiation to impinge upon the detector device when the radiation is below a predetermined threshold, and utilizing radiation having wavelengths different from signals of interest to initiate limiting of the radiation impinging upon the detector when the predetermined threshold is exceeded. The optical limiter includes an IR limiting layer pair selected so that energy from visible and near infrared radiation activates the optical limiter. The limiting layer pair may includes a layer closer to the source of radiation of e.g. vanadium dioxide, vanadium sesquioxide, or germanium crystal and a layer further from the source of radiation of e.g. chalcogenide glass, germanium crystal, or sodium chloride crystal.
REFERENCES:
patent: 4283113 (1981-08-01), Eden
patent: 4343182 (1982-08-01), Pompei
patent: 5347395 (1994-09-01), Lautenschlager et al.
patent: 5348688 (1994-09-01), Sharp et al.
patent: 5589101 (1996-12-01), Khoo
patent: 5796107 (1998-08-01), Buchtemann et al.
patent: 6121618 (2000-09-01), Morris
patent: 6392233 (2002-05-01), Channin et al.
patent: 6649912 (2003-11-01), Salapow et al.
patent: 6738203 (2004-05-01), Ando et al.
patent: 6787775 (2004-09-01), Bielefeld et al.
patent: 7177516 (2007-02-01), Ahn
patent: 2004/0223533 (2004-11-01), Dishaw et al.
Perazzo et al., “Infrared vision using uncooled micro-optomechanical camera,”Applied Physics Letters, vol. 74, No. 23, Jun. 7, 1999, pp. 3567-3569.
Danilov, et al., “Effect of intense laser radiation on controlled VO2 mirrors,”J. Opt. Technol., vol. 67, Jun. 2000, pp. 526-531.
Segaud, et al., “VO2 and Au-VO2 thin films prepared by sputtering and sol-gel for infrared optical power limiting,”Nonlinear Optics, 1999, vol. 21, pp. 211-224.
Mikheeva et al., “Features of the limitation of laser radiation by mirrors based on vanadium dioxide” J. Opt. Technol. 68 (4), Apr. 2001, pp. 278-281.
Oden et al., “Uncooled thermal imaging using a piezoresistive microcantilever,”Appl. Phys. Lett. 69 (21) Nov. 18, 1996, pp. 3277-3279.
Manalis, et al., “Two-dimensional micromechanical bimorph arrays for detection of thermal radiation,”Appl. Phys. Lett. 70 (24), Jun. 16, 1997, pp. 3311-3313.
De Natale, J.F., “Thin film optical switching materials,”Mat. Res. Soc. Symp. Proc., vol. 374, Materials Research Society, C1995, pp. 87-97.
Konovalova, et al., Interference systems of controllable mirrors based on vanadium dioxide for the spectral range 0.6-10.6 um,J. Opt. Technol., 66 (5), May 1999, pp. 391-398.
Suh, et al., “Semiconductor to metal phase transition in the nucleation and growth of VO2 nanoparticles and thin films,”J. Applied Physics, vol. 98 (2), Jul. 15, 2004, pp. 1209-1213.
LoPrestl, et al., “All-Optical Switching of Infrared Optical Radiation Using Isotropic Liquid Crystal,”IEEE Journal of Quantum Electronics, vol. 31, No. 4, Apr. 1995, pp. 723-728.
Dalakos George
Lawrence Brian
Lorraine Peter
Wu Pingfan
Yenisch William Taylor
Birch & Stewart Kolasch & Birch, LLP
Lockheed Martin Corporation
Nguyen Thong
LandOfFree
Passive broadband long wave and mid-wave infrared optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Passive broadband long wave and mid-wave infrared optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive broadband long wave and mid-wave infrared optical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4127420