Fluorescent lamp processing which improves performance of zinc s

Details Fluorescent lamp processing which improves performance of zinc s Fluorescent lamp processing which improves performance of zinc s

1981-05-19

1982-12-14

Hoffman, James R.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

427 67, 313493, H01J 6148, B05D 722

Patent

active

043639984

ABSTRACT:
Fluorescent lamp incorporates tin oxide conductive coating on the envelope interior surface and the lamp also incorporates phosphor means comprising manganese-activated zinc silicate phosphor, which may be used as a blend constituent. The lamp is processed in such a manner as to improve the performance of the zinc silicate phosphor. In order to improve the adherence of the phosphor to the tin oxide conductive coating, the tin oxide is overcoated with a film of sub-micron-size aluminum oxide and, in accordance with the present processing, there is included with the aluminum oxide finely divided antimony oxide. The phosphor is then overcoated onto the mixed film of aluminum oxide and antimony oxide, and during the later lehring processing of the coated phosphor, the antimony oxide is volatilized to contact the zinc silicate phosphor to improve the performance thereof.

REFERENCES:
patent: 2607014 (1952-08-01), Roy et al.
patent: 3348961 (1967-10-01), Rupp et al.
patent: 3858082 (1978-05-01), Manders
patent: 4263530 (1981-04-01), Van Broekhoven et al.
patent: 4305019 (1981-12-01), Graff et al.
patent: 4315192 (1982-02-01), Skwirut et al.

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