Electrodeless fluorescent lamp

Details Electrodeless fluorescent lamp Electrodeless fluorescent lamp

2005-12-27

2005-12-27

Glick, Edward J. (Department: 2882)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C313S634000, C313S489000

Reexamination Certificate

active

06979946

ABSTRACT:
The thickness of a luminophor film (16′) provided on the inner surface of a translucent discharge vessel (11) having a cavity portion (12) in which a light emitting substance is enclosed is the maximum in the vicinity of a plasma (15), becomes smaller as being closer to a connection portion (21) with an inner tube (32) and becomes also smaller as being closer to a round bottom portion (41). With this film thickness distribution, an electrodeless fluorescent lamp having approximately the same luminous intensity distribution characteristics as those of an incandescent lamp can be achieved. Therefore, even when the electrodeless fluorescent lamp is connected to an incandescent lamp lighting fixture, light can be taken out in a preferable state.

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International Search Report for PCT/JP02/12463 mailed Feb. 4, 2003, ISA/JPO.

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