Low pressure mercury discharge fluorescent lamp utilizing multil

Details Low pressure mercury discharge fluorescent lamp utilizing multil Low pressure mercury discharge fluorescent lamp utilizing multil

1987-11-30

1989-07-11

Schor, Kenneth M.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

2923014R, 2923014P, H01J 162

Patent

active

048475335

ABSTRACT:
A low pressure mercury discharge fluorescent lamp is disclosed utilizing a particular phosphor blend deposited on a calcium haloapatite phosphor base layer to achieve white color lamp illumination efficiently with improved color rendition. The surface phosphor layer is a blended mixture of a first phosphor which is divalent europium barium and/or strontium magnesium aluminate having a hexagonal crystalline structure and which further includes coactivation by divalent manganese ion sufficient to produce substantial green color emission with a second phosphor which is trivalent europium activated rare earth oxide having a rare earth ion selected from yttrium, gadolinium and lutetium, including mixtures of these rare earth ions. The underlying calcium haloapatite layer also exhibits emission at approximately the same color point as achieved with the surface phosphor layer.

REFERENCES:
patent: 3937998 (1976-02-01), Verstegen et al.
patent: 4005328 (1977-01-01), Radielovic et al.
patent: 4032812 (1977-06-01), Robayashi et al.
patent: 4075532 (1978-02-01), Piper et al.
patent: 4079287 (1978-03-01), Sonles et al.
patent: 4110660 (1978-08-01), Wolfe
patent: 4258285 (1981-03-01), Chenot et al.
patent: 4315192 (1982-02-01), Skwirut et al.
patent: 4458176 (1984-07-01), Chenot et al.
patent: 4527087 (1985-07-01), Taya et al.
patent: 4602188 (1986-07-01), de Hair et al.
patent: 4623816 (1986-11-01), Hoffman et al.

Affiliated with

Also associated with

Rating

Low pressure mercury discharge fluorescent lamp utilizing multil 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 discharge fluorescent lamp utilizing multil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low pressure mercury discharge fluorescent lamp utilizing multil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-439083