White light source

Details White light source White light source

1974-10-03

1977-01-18

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Screen

H01J 2920

Patent

active

040041786

ABSTRACT:
A white light source is described in which a trivalent metallic ultraphosphate is irradiated with a low voltage electron beam. The metallic ions are generally restricted to the lanthanide rare earth ions and yttrium. The material so irradiated emits light in a spectral continuum centered in the visible portion of the electro-magnetic spectrum. This emission is, however, in addition to any narrow bandwidth light emission of the type generally associated with a transition of the metallic ion involving the electrons of the 4f shell.

REFERENCES:
patent: 3104226 (1963-09-01), Struck
patent: 3813613 (1974-05-01), Danielmeyer et al.
patent: 3863177 (1975-01-01), Damen et al.

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