Method for manufacturing white light source

Details Method for manufacturing white light source Method for manufacturing white light source

2006-06-13

2006-06-13

Williams, Joseph (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

Reexamination Certificate

active

07059927

ABSTRACT:
A method for manufacturing a white light source includes steps of providing an ultra-violet light as a radiation source, preparing three kinds of first phosphors each receiving the ultra-violet light and emitting the light of red, green and blue, respectively, and preparing at least one additional second phosphor to modify a spectral property of the light emitted by the three first phosphors in order to improve the brightness and color rendering property of the white light source. Moreover, at least one phosphor with the fluorescent property is used as the above second phosphor powder to obtain a color-changeable light source.

REFERENCES:
patent: 5045752 (1991-09-01), Jansma
patent: 6290875 (2001-09-01), Oshio et al.
patent: 6380669 (2002-04-01), Zachau et al.
patent: 6641448 (2003-11-01), Wang et al.
patent: 2004/0124758 (2004-07-01), Danielson et al.

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