PHOSPHOR COATING FILMS AND LIGHTING APPARATUSES USING THE SAME
First Claim
1. A lighting apparatus comprising:
- a circuit board having a highly reflective top surface;
at least one LED chip mounted on the top surface of the circuit board, the at least one LED chip being operable to emit light of a first color;
a phosphor film having an arcuate inner surface configured so as to maintain a predetermined finite distance from the at least one LED chip, the phosphor film being disposed such that light emitted from the LED chip radiates upon the phosphor film, the inner surface of the phosphor film hooding the top surface of the circuit board so as to form a multi-reflection zone to reduce light absorption by the at least one LED chip and reduce direct light leakage from between the phosphor film and the top surface of the circuit board, the phosphor film containing phosphors that down convert at least a portion of the light of the first color emitted by the at least one LED chip into light of a second color, having a longer wavelength than the first color, the first and second colors, when mixed together producing visible white light.
2 Assignments
0 Petitions
Accused Products
Abstract
A lighting apparatus includes a circuit board having a highly reflective top surface; at least one LED chip mounted on the top surface of the circuit board, the at least one LED chip being operable to emit light of a first color. A phosphor film having an arcuate inner surface is configured to maintain a predetermined finite distance from the at least one LED chip, the phosphor film being disposed such that light emitted from the LED chip radiates upon the phosphor film, the inner surface of the phosphor film hooding the top surface of the circuit board so as to form a multi-reflection zone to reduce light absorption by the at least one LED chip and reduce direct light leakage from between the phosphor film and the top surface of the circuit board. The phosphor film containing phosphors that down convert at least a portion of the light of the first color into light of a second color, that when mixed together with the first color produces visible white light.
-
Citations
29 Claims
-
1. A lighting apparatus comprising:
-
a circuit board having a highly reflective top surface; at least one LED chip mounted on the top surface of the circuit board, the at least one LED chip being operable to emit light of a first color; a phosphor film having an arcuate inner surface configured so as to maintain a predetermined finite distance from the at least one LED chip, the phosphor film being disposed such that light emitted from the LED chip radiates upon the phosphor film, the inner surface of the phosphor film hooding the top surface of the circuit board so as to form a multi-reflection zone to reduce light absorption by the at least one LED chip and reduce direct light leakage from between the phosphor film and the top surface of the circuit board, the phosphor film containing phosphors that down convert at least a portion of the light of the first color emitted by the at least one LED chip into light of a second color, having a longer wavelength than the first color, the first and second colors, when mixed together producing visible white light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 22, 23, 24, 26, 27, 28, 29)
-
-
13. A lighting apparatus comprising:
-
a circuit board with a highly light reflective top surface made of PCB, MCPCB, ceramic, or enamel with (or without) solder mask; at least one LED chip mounted on a highly reflective top surface of the circuit board, the at least one LED chip being operable to emit light of a first color; an phosphor film (i) having an arcuate inner surface configured so as to maintain a predetermined finite distance from the at least one LED chip, the phosphor film being disposed such that light emitted from the at least one LED chip completely and uniformly radiates upon the phosphor film, (ii) having an opening to hood the high reflective top surface of the circuit board such that a light multi-reflection zone is formed to reduce the light absorption by the at least one LED chip with little direct light leakage from gaps between the phosphor film and the highly reflective surface of circuit board, (iii) the phosphor film containing phosphors that down convert at least a portion of the light, in a range from 300˜
500 nm, of the first color emitted by the at least one LED chip into light with longer wavelength, in a range from 500˜
700 nm, of a second color, that when mixed together with the first color produces visible white light. - View Dependent Claims (14, 15, 16, 17, 18, 20, 21, 25)
-
Specification