Fluorescent lamp having two phosphor layers

Details Fluorescent lamp having two phosphor layers Fluorescent lamp having two phosphor layers

1980-06-13

1987-07-07

Moore, David K.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313486, H01J 162

Patent

active

046789669

ABSTRACT:
A fluorescent lamp has two layers of different phosphors, the underlying phosphor serving to improve the maintenance of the overlying phosphor.

REFERENCES:
patent: 3602757 (1971-08-01), Wachtel
patent: 3937998 (1976-02-01), Verstegen et al.
patent: 4069441 (1978-01-01), Wanmaker et al.
patent: 4110660 (1978-08-01), Wolfe
patent: 4251750 (1981-02-01), Gallien et al.

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