Fluorescent lamp utilizing terbium-activated rare earth oxyhalid

Details Fluorescent lamp utilizing terbium-activated rare earth oxyhalid Fluorescent lamp utilizing terbium-activated rare earth oxyhalid

1976-12-13

1978-07-04

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

2523014H, H01J 6144

Patent

active

040990893

ABSTRACT:
Use of terbium-activated rare earth oxyhalide phosphor material in a high-loaded fluorescent lamp having an operating temperature range of approximately 100.degree. C or greater provides high efficiency emission. The phosphor material can be utilized alone or in combination with other suitable phosphor materials at the elevated operating temperatures to generate white-light composite emission. For white-light emission, the phosphor admixture further includes a narrow band red-emitting phosphor along with a narrow band blue-emitting phosphor in suitable portions.

REFERENCES:
patent: 3521120 (1970-07-01), Anderson
patent: 3548238 (1970-12-01), Chenot et al.
patent: 3617743 (1971-11-01), Rabatin et al.
patent: 3858082 (1974-12-01), Thornton, Jr.
patent: 3875453 (1975-04-01), Thornton, Jr.

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