High pressure mercury vapor discharge lamp with outer bulb

Details High pressure mercury vapor discharge lamp with outer bulb High pressure mercury vapor discharge lamp with outer bulb

1981-04-08

1983-07-12

Smith, Alfred E.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313112, H01J 162, H01J 6140

Patent

active

043933319

ABSTRACT:
High pressure mercury vapor discharge lamp having an outer bulb which is ferably spherical and which provides light having a color similar to that of an incandescent lamp. The inner surface of the outer bulb is provided with a red-emitting phosphor coating. The outer surface of the outer bulb is provided with a filter coating whose transmittance at 400 nm is about 40%, at 500 nm is about 60%, and at 600 nm is about 70%.

REFERENCES:
patent: 2966605 (1960-12-01), Harris et al.
patent: 3206632 (1965-09-01), Rokosz
patent: 3617794 (1971-11-01), Bakel et al.

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