# US 9,435,495 B2 · Light-emitting diode lamp

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- Number: US 9,435,495 B2
- Document ID: US9435495B2
- Status: Granted
- Kind: B2
- Application number: 14/232,334
- Filed: 2012-07-13
- Published: 2014-10-16
- Granted: 2016-09-06
- Earliest claimed: 2011-07-14
- Assignees: Vitrulux Liability Company
- Applicants: Bronislav Vladislavovich Gorlinskiy; Yuri Sergeevich Panteleev
- Inventors: Bronislav Vladislavovich Gorlinskiy; Yuri Sergeevich Panteleev
- Web page: https://patentgrep.com/patent/US9435495B2

## CPC

- F21K 9/69: Details of refractors forming part of the light source
- F21K 9/60: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K 9/66: Details of globes or covers forming part of the light source
- F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)}
- F21V 5/048: {the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses}
- F21V 7/0091: {using total internal reflection}
- G02B 19/0028: {refractive and reflective surfaces, e.g. non-imaging catadioptric systems}
- G02B 19/0066: {in the form of an LED array}
- F21K 9/23: Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- 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
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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

LED lamp (100) including a lens (206) and an LED (204). The lens (206) has a parabolic section (506) defined about axis (510) and a focus (514). The parabolic section (506) includes a surface traverse to the axis (510) and extending from the axis (510) to a periphery of the parabolic section (506) at a first end of the parabolic section (506). The parabolic section (506) includes a channel (512) extending along the axis (512) at least partially inside the parabolic section (506) at a second end of the parabolic section (506). The LED (204) is disposed in the channel (512) at the focus (514). First light rays are internally reflected in the lens (206) and collimated through the surface. Second light rays are transmitted through the lens (206) and the surface in parallel to the axis (510). Third light rays are refracted by the surface toward the axis (510).

## Claims

### Claim 1

A light-emitting diode lamp comprising:
an optically-transparent lens including a parabolic section, the parabolic section defined about an axis and having a focus, the parabolic section comprising:
a continuous surface traverse to the axis and extending from the axis to a periphery of the parabolic section at a first end of the parabolic section, and
a channel extending along the axis at least partially inside the parabolic section at a second end of the parabolic section, the second end being substantially opposed to the first end; and
a light-emitting diode assembly comprising a light-emitting diode and an optically-transparent dome, the light-emitting diode disposed in the channel at the focus of the parabolic section, the optically-transparent dome disposed in the channel such that an interior space is formed in the channel between the optically-transparent dome and the optically-transparent lens, the interior space filled with an optically-transparent material having an index of refraction approximately equal to an index of refraction of the optically-transparent lens which eliminates or reduces effect of an optical interface between the optically-transparent material and the optically-transparent lens on direction of light emitted by the light-emitting diode, the light-emitting diode configured to emit light such that first light rays of the light are internally reflected in the lens and collimated through the continuous surface, second light rays of the light are transmitted through the optically transparent lens and the continuous surface in parallel to the axis, and third light rays of the light are refracted by the continuous surface toward the axis.

### Claim 2 (depends on 1)

The light-emitting diode lamp according to claim 1, further comprising a riser section extending from the second end of the parabolic section, such that the channel is continuous through the riser and at least partially inside the parabolic section.

### Claim 3 (depends on 2)

The light-emitting diode lamp according to claim 2, wherein the light-emitting diode assembly comprises a circuit board to which the light-emitting diode is electrically secured, and the optically-transparent dome is secured to the circuit board, wherein the optically-transparent dome encapsulates the light-emitting diode.

### Claim 4 (depends on 3)

The light-emitting diode lamp according to claim 3, wherein the optically-transparent lens is secured to the circuit board of light-emitting diode assembly, such that the optically-transparent dome and the encapsulated light-emitting diode are disposed in the channel at approximately the axis.

### Claim 5 (depends on 3)

The light-emitting diode lamp according to claim 3, wherein the circuit board is electrically secured to a second circuit board.

### Claim 6 (depends on 5)

The light-emitting diode lamp according to claim 5, wherein the optically-transparent lens is secured to the second circuit board, such that the light-emitting diode assembly is disposed in the channel at approximately the axis.

### Claim 7 (depends on 3)

The light-emitting diode lamp according to claim 3, wherein the optically-transparent material has a first index of refraction, the optically-transparent lens has a second index of refraction, the optically-transparent dome has a third index of refraction, and the first index of refraction is equal to the second index of refraction and to the third index of refraction.

### Claim 8 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein the optically-transparent material is an optically-transparent gel.

### Claim 9 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein optically-transparent lens is made from an optically-transparent material that is continuous from the channel to the periphery and the continuous surface of the optically-transparent lens.

### Claim 10 (depends on 1)

The light-emitting diode lamp according to claim 1, further comprising:
an optically-transparent screen disposed above the optically-transparent lens, the optically transparent screen having a first side and a substantially opposed second side; and
an optically-transparent layer deposited over at least a portion of the first side of the optically-transparent screen, the optically-transparent layer including an array of lenses formed in a three-dimensional coordinate system to refract and defuse light emitted from the light-emitting diode and passed through the lens such that the light passes through the first side and then through the second side of the optically-transparent screen.

### Claim 11 (depends on 10)

The light-emitting diode lamp according to claim 10, wherein the array of lenses is at least one of random and pseudo-random.

### Claim 12 (depends on 10)

The light-emitting diode lamp according to claim 10, wherein the array of lenses includes one or more prisms.

### Claim 13 (depends on 10)

The light-emitting diode lamp according to claim 10, wherein the optically-transparent screen has a first index of refraction, the optically-transparent layer has a second index of refraction, and the first index of refraction is equal to the second index of refraction.

### Claim 14 (depends on 1)

The light-emitting diode lamp according to claim 1, further comprising an optically-transparent screen disposed above the optically-transparent lens, the optically transparent screen having a first side and a substantially opposed second side, wherein the first side is formed to include an array of lenses in a three-dimensional coordinate system to refract and defuse light emitted from the light-emitting diode and passed through the lens such that the light passes through the array of lenses in the first side and then through the second side.

### Claim 15 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein the light-emitting diode lamp is a lighting fixture or secured to a lighting fixture.

### Claim 16 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein the optically transparent material is at least one of heat resistant and pliable.

### Claim 17 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein the optically-transparent material has a first index of refraction, the optically-transparent lens has a second index of refraction, and the first index of refraction is equal to the second index of refraction.

### Claim 18 (depends on 1)

The light-emitting diode lamp according to claim 1, wherein the index of refraction of the optically-transparent material and the index of refraction of the optically-transparent lens is in a range of about 1.4 to about 1.6.