Electric lamp and discharge devices – Having vapor generating material
Patent
1995-07-13
1999-05-25
Patel, Ashok
Electric lamp and discharge devices
Having vapor generating material
313490, 313566, 313552, H01J 6124
Patent
active
059072164
ABSTRACT:
A low-pressure mercury vapour discharge lamp according to the invention is provided with a radiation-transmitting discharge vessel (10) which encloses a discharge space (11) in a gastight manner and comprises mercury as well as a rare gas. Mercury is also present in a vapour pressure control member (21) which is in communication with the discharge space (11) during nominal operation. The discharge lamp has means (40) for maintaining a discharge in the discharge space (11). The vapour pressure control member (21) forms part of a mercury control member (20) which also comprises mercury transport control means (22) which limit the mercury transport from the discharge space (11) to the vapour pressure control member (21), at least while the lamp is out of operation, to such an extent that this transport is at most 5 ng/h.cm.sup.3, measured at room temperature and in the presence of a saturated mercury vapour in the discharge vessel, per unit volume of the discharge space. The lamp according to the invention has a comparatively high initial radiation output and a comparatively high radiation output at comparatively high lamp temperatures.
REFERENCES:
patent: 2427732 (1947-09-01), Mason
patent: 3227907 (1966-01-01), Bernier et al.
patent: 3511405 (1970-05-01), Plagge
patent: 3629641 (1971-12-01), Hofmann
patent: 3688148 (1972-08-01), Fedorenko et al.
patent: 3784863 (1974-01-01), Scott
patent: 3983439 (1976-09-01), Bloomerde et al.
patent: 4288715 (1981-09-01), Van Overveld et al.
patent: 4393325 (1983-07-01), Van Der Kooi
patent: 4622495 (1986-11-01), Smeelen
patent: 4823047 (1989-04-01), Holmes et al.
patent: 5294867 (1994-03-01), Grossman
"Amalgamen voor 'TL'-Lampen" by J. Bloem et al, Philips Techn. T, 38, 12-17, 1978/79, No. 1.
Kaiser Renate
Ligthart Franciscus A.S.
Van Den Bogert Willem J.
Van Haastrecht Johannes T.J.
Faller F. Brice
Patel Ashok
U.S. Philips Corporation
LandOfFree
Low-pressure mercury vapour discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low-pressure mercury vapour discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-pressure mercury vapour discharge lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-402942