Illuminating light source for color image recording device

Details Illuminating light source for color image recording device Illuminating light source for color image recording device

1990-05-30

1991-10-22

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313493, 315116, H01J 162

Patent

active

050598600

ABSTRACT:
An illuminating light source for a color image recording device comprises a glass tube having a predetermined diameter, a reflecting film coated on an inner wall of the glass tube excepting a part thereof by coating, a fluorescent film formed on the reflecting film coated on the glass tube, wherein at least one of a ultraviolet ray absorbing film and the fluorescent film is formed on the part on which the reflecting film is not formed thereby to maintain a ratio of a bright line to a fluorescence being not more than 1.3 when a fluorescent lamp current is applied.

REFERENCES:
patent: 3141990 (1964-07-01), Ray
patent: 3336502 (1967-08-01), Gilliatt
patent: 4255687 (1981-03-01), van Engeleen et al.
patent: 4774550 (1988-09-01), Igarashi

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