Wavelength shifting filter

Details Wavelength shifting filter Wavelength shifting filter

1996-03-27

1998-04-07

Nguyen, Kiet T.

Radiant energy

Radiation controlling means

250504R, 362231, H05B 3500

Patent

active

057367442

ABSTRACT:
A wavelength shifting filter having two sheets of material adjacent and parallel with a spacer therebetween about the periphery of the sheets. The sheets are held in a frame. A phosphor coating is located on the inner side of one of the sheets. A transilluminator is associated with the filter and provides radiation in the UV wavelength. One sheet of the filter transmits the UV wavelength. The other sheet transmits at least a portion of the wavelength that the phosphor coating generates when subjected to the UV radiation of the transilluminator. The visual effect of white light is enhanced by the use of white glass.

REFERENCES:
patent: 3866049 (1975-02-01), Allington
patent: 3891849 (1975-06-01), Felice et al.
patent: 4241258 (1980-12-01), Cholin
patent: 5347342 (1994-09-01), Ehr
patent: 5387801 (1995-02-01), Gonzalez et al.

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