LIGHT GUIDE STICK AND LIGHT SOURCE ASSEMBLY HAVING LIGHT EMITTING DIODE AND LIGHT GUIDE STICK

• US 20140146558A1
• Filed: 04/18/2013
• Published: 05/29/2014
• Est. Priority Date: 11/26/2012
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: CHEN, PO-CHOU
• Application Number:
  US13/865,215
• Publication Number:
  US 20140146558A1
• Time in Patent Office: Days
• US Class Current: 362/555
• CPC Class Codes: F21K 9/61 using light guides
• CPC Class Codes: F21V 2200/00 Use of light guides, e.g. fibre optic devices, in lighting devices or systems
• CPC Class Codes: G02B 6/001 the light being emitted along at least a portion of the lateral surface of the fibre
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer

Abstract

A light source assembly includes a light emitting diode and a light guide stick. The light guide stick includes an incident surface, a rear surface opposite to the incident surface, and a side surface connected between the incident surface and the rear surface. The light emitting diode faces the incident surface for emitting light to the incident surface. The light guide stick includes a plane passing through its center axis. The side surface includes a light reflection part and a light emission part. A projection of the light emission part on the plane is substantially a rectangle. Long sides of the rectangle are parallel to the center axis. The light reflection part is coated with a reflection layer.

Claims

1. A light guide stick, comprising:

an incident surface;

a rear surface opposite to the incident surface; and

a side surface connected between the incident surface and the rear surface;

wherein the light guide stick comprises a plane passing through its center axis, the side surface comprises a light reflection part and a light emission part, a projection of the light emission part on the plane is substantially a rectangle, long sides of the rectangle are parallel to the center axis, and the light reflection part is coated with a reflection layer.

2. The light guide stick of claim 1, wherein the side surface is divided into the reflection part and the emission part by the plane.

3. The light guide stick of claim 2, wherein the light guide stick is cylindrical, and each of the light reflection part and the light emission part is a half of the side surface.

4. The light guide stick of claim 2, wherein the light reflection part is ground to form a rough layer, and the reflection layer is coated on the rough layer.

5. The light guide stick of claim 1, wherein the rear surface is coated with the reflection layer.

6. A light source assembly, comprising:

a light emitting diode; and

a light guide stick comprising;

an incident surface;

a rear surface opposite to the incident surface; and

a side surface connected between the incident surface and the rear surface;

wherein the light emitting diode faces the incident surface for emitting light to the incident surface, the light guide stick comprises a plane passing through its center axis, the side surface comprises a light reflection part and a light emission part, a projection of the light emission part on the plane is substantially a rectangle, long sides of the rectangle are parallel to the center axis, and the light reflection part is coated with a reflection layer.

7. The light source assembly of claim 6, wherein the side surface is divided into the light reflection part and the light emission part by the plane.

8. The light source assembly of claim 7, wherein the light guide stick is cylindrical, and each of the light reflection part and the light emission part is a half of the side surface.

9. The light source assembly of claim 7, wherein the light reflection part is ground to form a rough layer, and the reflection layer is coated on the rough layer.

10. The light source assembly of claim 6, wherein the rear surface is coated with the reflection layer.