High lumen output fluorescent lamp with high color rendition

Details High lumen output fluorescent lamp with high color rendition High lumen output fluorescent lamp with high color rendition

2006-11-21

2006-11-21

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C252S30140R, C252S30160P, C252S30140P

Reexamination Certificate

active

07138757

ABSTRACT:
A high lumen output compact fluorescent lamp is disclosed that has a luminous efficiency of 40 lumen/W or higher. The fluorescent lamp comprises an envelope enclosing a discharge space, means for providing a discharge in the discharge space, a discharge gas sealed in the discharge space and a fluorescent layer made of a phosphor blend coated on the inner surface of the envelope. The phosphor blend comprises a, 55 to 80 weight % of a first phosphor having an emission band with a maximum between 620 nm and 635 nm and having a half-value width of 70 nm to 150 nm, b, 5 to 30 weight % of a second phosphor having an emission band with a maximum between 605 nm and 615 nm and having a half-value width of 1 nm to 10 nm, c, 0 to 20 weight % of a third phosphor having an emission band with a maximum between 540 nm and 550 nm and having a half-value width of 1 nm to 10 nm, and d, 0 to 30 weight % of a fourth phosphor having an emission band with a maximum between 480 nm and 500 nm and having a half-value width of 50 nm to 80 nm. The lamp havs an Ravalue greater than 90 and a photographic color temperature between 3000 K and 3500 K.A lamp is also disclosed in which the phosphor blend comprises: a, 20 to 60 weight % of a first phosphor having an emission band with a maximum between 620 nm and 635 nm and having a half-value width of 70 nm to 150 nm, b, 20 to 65 weight % of a second phosphor having an emission band with a maximum between 480 nm and 500 nm and having a half-value width of 50 nm to 95 nm, c, 0 to 20 weight % of a third phosphor having an emission band with a maximum between 450 nm and 460 nm and having a half-value width of 40 nm to 65 nm and d, 0 to 30 weight % of a fourth phosphor having an emission band with a maximum between 610 nm and 630 nm and having a half-value width of 1 nm to 10 nm. This lamp has an Ravalue greater than 90 and a photographic color temperature between 5000 K and 6000 K.

REFERENCES:
patent: 6137217 (2000-10-01), Pappalardo et al.
patent: 6452324 (2002-09-01), Soules et al.
patent: 6525460 (2003-02-01), Soules et al.
patent: 6794810 (2004-09-01), Gruber et al.
Library of Congress Cataloging-in-Publication Data. Shigeo Shionoya, William M. Yen; members Takashi Hase et al, Phosphor Handbook, CRC Press, Washington D.C., p. 170 , 1987.
http://www.Sylvania.com/BusinessProducts/MaterialsandComponents/Lighting, “Fluorescent Lamps, Fluorescent Lamp & Neon Phosphors,” Jan. 4, 2006.
http://www.Sylvania.com/BusinessProducts/MaterialsandComponents/Lighting, Fluorescent Blends, Phosphors for Fluorescent Blends, Jan. 4, 2006.

Affiliated with

Also associated with

Rating

High lumen output fluorescent lamp with high color rendition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High lumen output fluorescent lamp with high color rendition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High lumen output fluorescent lamp with high color rendition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3640139