Fluorescent lamp using high performance phosphor blend which is

Details Fluorescent lamp using high performance phosphor blend which is Fluorescent lamp using high performance phosphor blend which is

1979-12-31

1982-02-09

Krawczewicz, Stanley T.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

H01J 6148

Patent

active

043151922

ABSTRACT:
Fluorescent lamps have a predetermined correlated color temperature and a combined efficiency and good color rendition of illuminated objects. The lamps utilize a two-layer phosphor coating comprising a layer coated onto the envelope interior surface and formed of a very high performance three-component blend which includes a blue-emitting phosphor, a green-emitting manganese-activated zinc silicate phosphor, and a red-orange emitting phosphor, all mixed in predetermined amounts and relative proportions to provide an emission of approximate predetermined x-y coordinates. Under some conditions, the phosphor blend when used as a single layer is subject to depreciation of the light output of the green component, particularly in the vicinity of the lamp electrodes which results in color shifts which are objectionable from an aesthetic standpoint. To protect the green-emitting component of the high performance blend, there is provided over the phosphor blend layer a very thin layer of finely divided phosphor which is very stable and which has an emission of approximately the same x-y coordinates as the high performance phosphor blend layer. The resulting lamp has overall improved performance from an aesthetic standpoint.

REFERENCES:
patent: 2488733 (1949-11-01), McKeag et al.
patent: 3602758 (1971-08-01), Thornton et al.
patent: 3858082 (1974-12-01), Thornton, Jr.
patent: 3937998 (1976-02-01), Verstegen et al.
patent: 4070598 (1978-01-01), DeLuca et al.
patent: 4088923 (1978-05-01), Manders

Affiliated with

Also associated with

Rating

Fluorescent lamp using high performance phosphor blend which is does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluorescent lamp using high performance phosphor blend which is , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescent lamp using high performance phosphor blend which is will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1262421