Fluorescent lamp having high color rendering index

Details Fluorescent lamp having high color rendering index Fluorescent lamp having high color rendering index

1979-10-29

1981-10-20

Krawczewicz, Stanley T.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 162

Patent

active

042963532

ABSTRACT:
A fluorescent lamp having a high color rendering index and high efficacy comprises a glass envelope having electrodes at its ends and contains a fill including mercury and a starting gas, and a phosphor coating on the inner surface of the glass envelope, the phosphor coating comprising a blend of four narrow band emitting phosphors.

REFERENCES:
patent: 3778660 (1973-12-01), Kamiya et al.
patent: 4055781 (1977-10-01), Schreurs
patent: 4199707 (1980-04-01), Akiyama et al.

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