# US 10,310,156 B2 · Visible light generated using UV light source

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- Number: US 10,310,156 B2
- Document ID: US10310156B2
- Status: Granted
- Kind: B2
- Application number: 12/542,432
- Filed: 2009-08-17
- Published: 2011-02-17
- Granted: 2019-06-04
- Earliest claimed: 2009-08-17
- Applicants: Mario W. Cardullo
- Inventors: Mario W. Cardullo
- Web page: https://patentgrep.com/patent/US10310156B2

## CPC

- G02B 6/0003: {the light guides being doped with fluorescent agents}
- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21K 9/61: using light guides
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- G02B 6/0006: {Coupling light into the fibre (in general G02B6/4298)}
- G02B 6/0008: {the light being emitted at the end of the fibre}
- G02B 6/001: {the light being emitted along at least a portion of the lateral surface of the fibre}
- F21Y 2115/10: Light-emitting diodes [LED]
- F21Y 2115/30: Semiconductor lasers
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A device and method for an ultraviolet light (UV) light based visible light generator is disclosed. The UV light source emits a beam of UV light that may be scattered or reflected onto surfaces including UV light reactive materials that produces visible light when exposed to UV light. The UV light may be coherent or non-coherent light. The UV light reactive material may include quantum dot material.

## Claims

### Claim 1

A method for producing visible light from ultraviolet (UV) light in a commercial lighting fixture, the method comprising:
(i) emitting a beam of UV light from a UV emitting light emitting diode (LED) into a planar type visible light apparatus,
said apparatus having a plastic body (415) and an interior portion,
said interior portion configured as multiple inner surfaces selected from a first surface (403), a second surface (403a), a third surface (403b), and a fourth surface (425), said inner surfaces each comprising a UV light mirror,
said interior portion having a UV light reactive surface (420) comprising a UV light reactive composition,
said apparatus having a horizontal axis and said UV emitting LED configured at a first angle wherein the beam of UV light incident on said inner surfaces and on said UV light reactive surface produce visible light in substantially one direction perpendicular to the horizontal axis;
wherein the apparatus is mounted in a commercial lighting fixture selected from the group consisting of a ceiling light, a lamp, and a decorative light;
(ii) causing scattered UV light incident on the UV light reactive composition to emit visible light from said apparatus in a direction substantially perpendicular to the horizontal axis.

### Claim 2 (depends on 1)

A device configured to perform the steps of claim 1.

### Claim 3 (depends on 1)

The method of claim 1, wherein the layered panel has a UV light reflecting material along the side edges of the layered panel.

### Claim 4 (depends on 1)

The method of claim 1, further comprising a power source connected to the LED of the layered panel to power the UV light source.

### Claim 5 (depends on 1)

The method of claim 1, further comprising a focusing mechanism connected to the top layer of the layered panel to focus the emitted visible light.

### Claim 6 (depends on 1)

The method of claim 1, wherein the UV light is a blue LED.

### Claim 7 (depends on 1)

The method of claim 1, wherein the emitted beam of UV light has a wavelength between about 360 and about 480 nm.

### Claim 8 (depends on 1)

The method of claim 1, wherein the phosphor composition comprises quantum dot materials.