Infrared absorption filter

Details Infrared absorption filter Infrared absorption filter

2007-09-25

2007-09-25

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Having significant infrared or ultraviolet property

C359S359000, C359S360000, C252S587000, C428S411100

Reissue Patent

active

10897393

ABSTRACT:
The infrared absorption filter of the present invention has a transmittance of not higher than 30% in the near-infrared region in the wavelength range of 800 to 1100 nm; a difference of 10% or less between a maximum value and a minimum value of transmittance in the visible light region in the wavelength range of 450 to 650 nm; and a transmittance of not lower than 50% at a wavelength of 550 nm, the filter being so excellent in environmental stability that after being left to stand in the air atmosphere at a temperature of 60° C. and a humidity of 95% for 1000 hours, the filter can maintain said spectral property in said range. Consequently, when used for a plasma display or the like, the filter can absorb the unwanted infrared rays radiated from the display, resulting in preventing erroneous operation of a remote control using infrared radiation even in such a high-temperature and high-humidity environment. The filter is gray in color so that when placed in front of a display, the color originated in the display can be seen without discoloration.

REFERENCES:
patent: 3575871 (1971-04-01), Susi et al.
patent: 4223974 (1980-09-01), Masso
patent: 4497700 (1985-02-01), Groth et al.
patent: 4615989 (1986-10-01), Ritze
patent: 4816386 (1989-03-01), Gotoh et al.
patent: 5466755 (1995-11-01), Sakagami et al.
patent: 5804102 (1998-09-01), Oi et al.
patent: 6255031 (2001-07-01), Yao et al.
patent: 6542292 (2003-04-01), Onomichi et al.
patent: 6777087 (2004-08-01), Marutsuka
patent: 2005/0163958 (2005-07-01), Nakatsugawa
patent: 0838475 (1998-04-01), None
patent: 10-78509 (1979-03-01), None
patent: 55-21091 (1980-02-01), None
patent: 57-21458 (1982-02-01), None
patent: 57-198413 (1982-12-01), None
patent: 59-184745 (1984-10-01), None
patent: 60-43605 (1985-03-01), None
patent: 60-235740 (1985-11-01), None
patent: 62-153144 (1987-07-01), None
patent: 6-324213 (1994-11-01), None
patent: 7-134209 (1995-05-01), None
patent: 7-314626 (1995-12-01), None
patent: 8-106059 (1996-04-01), None
patent: 09-306366 (1997-11-01), None
patent: 10-105076 (1998-04-01), None
patent: WO97/38855 (1997-10-01), None
Communication from the European Patent Office herewith transmits as an enclosure the European search report (under R. 44 or R. 45 EPC) for the European Patent Application No. 04018016.8—2217 PCT.

Affiliated with

Also associated with

Rating

Infrared absorption filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3729453