Illumination – Light source and modifier – Including selected wavelength modifier
Patent
1997-05-27
1998-09-29
O'Shea, Sandra L.
Illumination
Light source and modifier
Including selected wavelength modifier
313112, 313113, 313114, 313502, 313506, 313512, 362800, 362293, 362260, 257 98, 257 97, 257 13, H04N 931
Patent
active
058137530
ABSTRACT:
A light emitting device for use in lighting and/or display applications includes a UV/blue LED located in a depression having reflecting sidewalls, a light transmitting material surrounding the LED and filling the depression, and a phosphor in the form of particles either dispersed in the light transmitting material or adhered to the surface of the LED. The sidewalls reflect UV as well as visible light, thus enhancing the efficiency of the device. Optical filters located on the top of the LED and/or the bottom of a UV absorbing glass plate covering the depression further enhance efficiency and/or spectral characteristics of the emitted light.
REFERENCES:
patent: 4634926 (1987-01-01), Vriens et al.
patent: 4647812 (1987-03-01), Vriens et al.
patent: 4822144 (1989-04-01), Vriens
patent: 4882617 (1989-11-01), Vriens
patent: 5557115 (1996-09-01), Shaluda
"Philips Technical Review", Interference filters in projection television tubes, vol. 44, No. 7, Mar. 1989, L. Vriens, J.A. Clarke and J.H.M. Spruit.
"Interference filters in projection television tubes", L. Vriens, J.A. Clarke et al, Philips Technical Review, vol. 44, No. 7, Mar. 1989, pp. 201-210.
Acket Gerard
Ronda Cornelis
Vriens Leendert
Fox John C.
Gerike Matthew J.
O'Shea Sandra L.
Philips Electronics North America Corporation
LandOfFree
UV/blue led-phosphor device with efficient conversion of UV/blue does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with UV/blue led-phosphor device with efficient conversion of UV/blue, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UV/blue led-phosphor device with efficient conversion of UV/blue will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-680335