# US 9,039,236 B2 · Optical lens and light source module having the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,039,236 B2
- Document ID: US9039236B2
- Status: Granted
- Kind: B2
- Application number: 13/726,240
- Filed: 2012-12-24
- Published: 2014-05-01
- Granted: 2015-05-26
- Earliest claimed: 2012-10-29
- Assignees: Hon Hai Precision Industry Co., Ltd.
- Applicants: Hon Hai Precision Industry Co., Ltd.
- Inventors: Yung-Chang Tseng
- Web page: https://patentgrep.com/patent/US9039236B2

## CPC

- F21V 5/04: of lens shape
- G02B 19/0009: {having refractive surfaces only}
- G02B 19/0061: {the light source comprising a LED}
- F21Y 2115/10: Light-emitting diodes [LED]
- 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

A lens for diverging light includes a bottom surface, a recess defined in the bottom surface, a lower inner curved surface in the recess, and an upper outer curved surface. The lower inner curved surface is configured for receiving light emitted from a light source. The lower inner curved surface includes an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an inwardly curved intermediate portion connected between the lower portion and the flat surface portion. The upper outer curved surface faces away from the bottom surface.

## Claims

### Claim 1

A lens for diverging light, comprising:
a bottom surface;
a recess defined in the bottom surface;
a lower inner curved surface in the recess, the lower inner curved surface configured for receiving light emitted from a light source, the lower inner curved surface comprising an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an inwardly curved intermediate portion connected between the lower portion and the flat surface portion; and
an upper outer curved surface facing away from the bottom surface;
wherein the inwardly curved lower portion protrudes towards the upper outer curved surface, and the inwardly curved intermediate portion protrudes towards the bottom surface.

### Claim 2 (depends on 1)

The lens of claim 1, wherein a curvature of the lower portion gradually decreases along a direction from the bottom surface to the intermediate portion.

### Claim 3 (depends on 2)

The lens of claim 2, wherein a curvature of the intermediate portion gradually increases along a direction from the lower portion to the flat surface portion.

### Claim 4 (depends on 1)

The lens of claim 1, wherein the lower portion is substantially semi-ellipsoidal.

### Claim 5 (depends on 1)

The lens of claim 1, wherein the flat surface portion is parallel to the bottom surface.

### Claim 6 (depends on 5)

The lens of claim 5, wherein the flat surface portion is round.

### Claim 7 (depends on 1)

The lens of claim 1, wherein the upper outer curved surface comprises a concave surface at a top center portion of the lens, an arcuate surface surrounding the concave surface.

### Claim 8 (depends on 7)

The lens of claim 7, wherein the concave surface is aligned with the recess.

### Claim 9 (depends on 8)

The lens of claim 8, wherein the arcuate surface is an outwardly curved surface.

### Claim 10 (depends on 9)

The lens of claim 9, wherein a radius of curvature of the arcuate surface is greater than that of the concave surface.

### Claim 11

A light source module comprising:
a light source; and
a lens including:
a bottom surface;
a recess defined in the bottom surface facing the light source;
a lower inner curved surface in the recess, the lower inner curved surface configured for receiving light emitted from the light source, the lower inner curved surface comprising an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an inwardly curved intermediate portion connected between the lower portion and the flat surface portion; and
an upper outer curved surface facing away from the bottom surface for emitting light;
wherein the inwardly curved lower portion protrudes towards the upper outer curved surface, and the inwardly curved intermediate portion protrudes towards the bottom surface.

### Claim 12 (depends on 11)

The light source module of claim 11, wherein the light source is an LED light source.

### Claim 13 (depends on 11)

The lens of claim 11, wherein the flat surface portion is parallel to the bottom surface.

### Claim 14 (depends on 11)

The lens of claim 11, wherein the flat surface portion is round.

### Claim 15 (depends on 11)

The lens of claim 11, wherein the upper outer curved surface comprises a central concave surface at a top center portion of the lens, and an arcuate surface at an outer periphery of the concave surface.

### Claim 16

A lens for diverging light, comprising:
a bottom surface;
a recess defined in the bottom surface;
a lower inner curved surface in the recess, the lower inner curved surface comprising an inwardly curved lower portion adjacent to the bottom surface, a flat surface portion arranged at a center of a bottom in the recess, and an outwardly curved intermediate portion connected between the lower portion and the flat surface portion;
an upper outer light emitting curved surface facing away from the bottom surface, the upper outer curved surface comprising a central concave surface aligned with the recess, a convex peripheral surface surrounding the concave surface, wherein the inwardly curved lower portion is configured to receive and direct light from the light source to the convex peripheral surface, the flat surface portion and the intermediate portion are configured to receive and direct light from the light source to the central concave surface;
wherein the inwardly curved lower portion protrudes towards the upper outer curved surface, and the inwardly curved intermediate portion protrudes towards the bottom surface.

### Claim 17 (depends on 16)

The lens of claim 16, wherein an area of a projection of the concave surface on the bottom surface is equal to or greater than an area of the lower inner curved surface on the bottom surface.