# US 8,786,207 B2 · Light-emitting diode with adjustable light beams and method for controlling the same

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- Number: US 8,786,207 B2
- Document ID: US8786207B2
- Status: Granted
- Kind: B2
- Application number: 13/476,329
- Filed: 2012-05-21
- Published: 2013-08-22
- Granted: 2014-07-22
- Earliest claimed: 2012-02-16
- Assignees: Av Tech Corporation
- Applicants: Chun-Ru Huang; Chien-Yueh Chen
- Inventors: Chun-Ru Huang; Chien-Yueh Chen
- Web page: https://patentgrep.com/patent/US8786207B2

## CPC

- H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED]
- F21V 9/40: with provision for controlling spectral properties, e.g. colour, or intensity
- F21S 10/00: Lighting devices or systems producing a varying lighting effect
- F21V 23/04: the elements being switches (safety devices F21V25/00)
- F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- H10W 90/00: Package configurations
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A light-emitting diode with adjustable light beams and a method for controlling the same. The light-emitting diode includes a substrate, multiple dies on the substrate, a primary optical lens over the substrate, wherein a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies, the primary optical lens covers the dies, and a controlling unit selectively drives the first or the second group to emit light, wherein a light beam formed by light that is emitted by the first group and passes through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group and passes through the primary optical lens.

## Claims

### Claim 1

A light-emitting diode with adjustable light beams, comprising:
a substrate;
a plurality of dies disposed on the substrate, a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies;
a primary optical lens, disposed on the substrate and covering the first group and second group of dies; and
a controlling unit selectively driving the first or the second group of the dies to emit light;
wherein a light beam formed by the light that is emitted by the first group of the dies passing through the primary optical lens has a different shape or projection angle from a light beam formed by the light that is emitted by the second group of the dies passing through the primary optical lens.

### Claim 2 (depends on 1)

The light-emitting diode of claim 1, wherein the first group of the dies are disposed at a center of the substrate, and the second group of the dies are arranged in a ring enclosing the first group of the dies in a concentric manner.

### Claim 3 (depends on 2)

The light-emitting diode of claim 2, wherein the light beam formed by the light that is emitted by the second group of the dies and passes through the primary optical lens has a projection angle greater than that of the light beam formed by the light that is emitted by the first group of the dies and passes through the primary optical lens.

### Claim 4 (depends on 1)

The light-emitting diode of claim 1, wherein the dies are arranged in a rectangular shape, the first group of the dies are disposed at a center of the substrate, and the second group of the dies are arranged in a ring enclosing the first group of the dies.

### Claim 5 (depends on 4)

The light-emitting diode of claim 4, wherein the light beam formed by the light that is emitted by the second group of the dies passing through the primary optical lens has a projection angle greater than that of the light beam formed by the light that is emitted by the first group of the dies passing through the primary optical lens.

### Claim 6 (depends on 1)

The light-emitting diode of claim 1, wherein the controlling unit controls light intensities of the dies so as to adjust a light effect of the light-emitting diode.

### Claim 7

A method for controlling light beams of a light-emitting diode, comprising:
providing a substrate;
providing a plurality of dies on the substrate, a portion of the dies being designated as belonging to a first group of dies and another portion of the dies being designated as belonging to a second group of dies;
providing a primary optical lens disposed on the substrate and covering the first group and second group of dies; and
selectively driving the first or the second group of the dies to emit light by a controlling unit, wherein a light beam formed by light that is emitted by the first group of the dies passing through the primary optical lens has a different shape or projection angle from a light beam formed by light that is emitted by the second group of the dies passing through the primary optical lens.

### Claim 8 (depends on 7)

The method of claim 7, wherein the first group of the dies are disposed at a center of the substrate, and the second group of the dies are arranged in a ring enclosing the first group of the dies in a concentric manner.

### Claim 9 (depends on 8)

The method of claim 8, wherein the light beam formed by the light that is emitted by the second group of the dies passing through the primary optical lens has a projection angle greater than that of the light beam formed by the light that is emitted by the first group of the dies passing through the primary optical lens.

### Claim 10 (depends on 7)

The method of claim 7, wherein the dies are arranged in a rectangular shape, wherein the first group of the dies are disposed at a center of the substrate, and the second group of the dies are arranged in a ring enclosing the first group of the dies.

### Claim 11 (depends on 10)

The method of claim 10, wherein the light beam formed by the light that is emitted by the second group of the dies passing through the primary optical lens has a projection angle greater than that of the light beam formed by the light that is emitted by the first group of the dies passing through the primary optical lens.

### Claim 12 (depends on 7)

The method of claim 7, wherein the controlling unit controls light intensities of the dies so as to adjust a light effect of the light-emitting diode.