Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1977-03-24
1978-02-14
Demeo, Palmer C.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313111, 313112, 313229, H01J 6134, H01J 6140, H01J 6120
Patent
active
040741648
ABSTRACT:
A sun lamp comprising an arc tube integrally mounted in an envelope transmissive to UV-radiation. The arc tube is of the halogen metal vapor discharge lamp type and contains mercury, together with (i) at least one rare earth metal halide or (ii) iron halide. The light transmissive envelope comprises a glass which transmits large amounts of the UV-A component of ultraviolet radiation, and transmits substantially no UV-C component of the radiation. The ratio of transmitted UV-A to UV-B is similar to that in natural radiation.
REFERENCES:
patent: 2524455 (1950-10-01), Macksoud
patent: 3093769 (1963-06-01), Kuhl et al.
patent: 3590307 (1971-06-01), Dobrusskin et al.
patent: 3842307 (1974-10-01), Dobrusskin et al.
"High Pressure Mercury Vapour Lamps and their applications" by W. Elenbaas t al., 1965, pp. 215-221.
"Materials and Techniques for Electron Tubes" by W. H. Kohl, 1966, pp. 22, 23, 606, 608, 609.
"Mercury Lamps", one page of G.E. Flyer, Jan. 1963, FIG. 8-RS Sunlamp.
DeMeo Palmer C.
Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
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