WAVELENGTH CONVERSION OPTICS
A wavelength conversion device includes an LED chip. A PCB solder mask defines an opening at least partially encompassing the LED chip. A lens is optically coupled with the LED chip and includes phosphor particles, emulsifier particles, and lens shaping particles each immersed within the lens. In various instances, the wavelength conversion device may be operably coupled with a vehicle to form various light effects.
1 . A wavelength conversion device comprising:
an LED chip;
a PCB solder mask defining an opening at least partially encompassing the LED chip; and
a lens optically coupled with the LED chip and including phosphor particles, emulsifier particles, and lens shaping particles each immersed within the lens.
2 . The wavelength conversion device of claim 1 , wherein the lens has a refractive index greater than or equal to 1.5.
3 . The wavelength conversion device of claim 1 , wherein the phosphor particles, the emulsifier particles, and the lens shaping particles are uniformly distributed within the lens.
4 . The wavelength conversion device of claim 1 , wherein the phosphor particles comprise one or more of YAG, LuAg, GAL, KSF, or Si 3 N 4 .
5 . The wavelength conversion device of claim 1 , wherein the emulsifier particles comprise one or more of CaF, ZrO 2 , or TiO 2 .
6 . The wavelength conversion device of claim 1 , wherein the lens shaping particles comprise one or more of hydrophobic fumed silica or SiO 2 .
7 . The wavelength conversion device of claim 1 , wherein a particle loading of the lens shaping particles is between 1 percent and 7 percent weight %.
8 . The wavelength conversion device of claim 1 , wherein the opening has an oblong geometric shape in an X-Y direction, and wherein the lens has a width in the X-direction that is greater than a width in the Y direction.
9 . The wavelength conversion device of claim 8 , wherein the lens produces asymmetric light distribution as light from the LED chip passes through the lens.
10 . The wavelength conversion device of claim 1 , wherein a center section of the lens has a longer path length for light rays from the LED chip relative to one or more sides, and wherein the phosphor particle concentration by weight is reduced in the center section.
11 . The wavelength conversion device of claim 1 , wherein the LED chip is trillion-shaped comprising three lateral sides, and wherein the LED chip defines edge bevels between adjacent sides of the three lateral sides.
12 . A method for manufacturing a wavelength conversion device, the method comprising:
producing a trillion-shaped LED chip;
applying a conformal phosphor coating to the LED chip; and
optically coupling a lens having quantum dots with the LED chip.
13 . The method of claim 12 , further comprising:
producing edge bevels on the LED chip.
14 . The method of claim 13 , wherein the bevels are produced through laser scribing or diamond sawing while dicing the LED chip.
15 . The method of claim 12 , wherein exiting light rays through the lens may be a combination of colors that create an ensemble of color or superposition of blended spectra to produce high uniformity broad-band white
16 . The method of claim 12 , further comprising:
preparing a surface finish on a vehicle panel; and
optically coupling the LED chip with a B-side of the vehicle panel.
17 . A lighting system comprising:
a first wavelength conversion device comprising:
a first trillion-shaped LED chip having three lateral sides, wherein the first trillion-shaped LED chip defines edge bevels between adjacent sides of the three lateral sides; and
a first lens optically coupled with the first trillion-shaped LED chip, the first lens including a first side portion, a second side portion, and a third side portion, wherein the first and second portions are a common distance from the first trillion-shaped LED chip and the third portion is a varied distance from the first trillion-shaped LED chip.
18 . The lighting system of claim 17 , wherein the first lens includes phosphor particles, emulsifier particles, and lens shaping particles each immersed within the first lens.
19 . The lighting system of claim 17 , further comprising:
a second wavelength conversion device comprising:
a second trillion-shaped LED chip having three lateral sides, wherein the second trillion-shaped LED chip defines edge bevels between adjacent sides of the three lateral sides; and
a second lens optically coupled with the second trillion-shaped LED chip, the second lens including a first side portion, a second side portion, and a third side portion, wherein the first and second portions are a common distance from the first trillion-shaped LED chip and the third portion is a varied distance from the second trillion-shaped LED chip.
20 . The lighting system of claim 17 , wherein the second lens includes phosphor particles, emulsifier particles, and lens shaping particles each immersed within the second lens.