Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1993-06-29
1994-08-30
Cooper, Jack
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
2523014R, 313468, G02F 11335, C09K 1180
Patent
active
053433165
ABSTRACT:
A red-emitting phosphor represented by a general formula (Y.sub.1-x-y Cr.sub.x Gd.sub.y).sub.3 (Al.sub.1-z Ga.sub.z).sub.5 O.sub.12 with the provide that 0.0005.ltoreq.x.ltoreq.0.05, O.ltoreq.y.ltoreq.1, O.ltoreq.z.ltoreq.1, providing red- and infrared emitting luminescence, using alone or in a mixture with other phosphors in a cathode ray tube, having a constant main emission peak even if excited by a high current density, having a satisfactory luminescence efficiency, and causing less brightness saturation in proportion as a current density increases.
REFERENCES:
patent: 4469619 (1984-09-01), Ohno et al.
patent: 4762639 (1988-08-01), Kasenga et al.
patent: 5202777 (1993-04-01), Sluzky et al.
Morimoto Kouji
Sumitomo Miyuki
Uchimura Katsunori
Cooper Jack
Nichia Chemical Industries Ltd.
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