Light-emitting device with vignetting effect

Patent metadata

Field	Value
Publication number	US-8974103-B2
Application number	US-201313951425-A
Country	US
Kind code	B2
Filing date	Jul 25, 2013
Priority date	Oct 29, 2012
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

A light-emitting device includes a light source, a panel and a light guiding structure. The light guiding structure includes a first light guiding tunnel and a second light guiding tunnel. The first light guiding tunnel includes a first end and a second end. A first opening is formed at the first end and close to the light source. The second light guiding tunnel includes a first end and a second end. The first end of the second light guiding tunnel communicates with the second end of the first light guiding tunnel. A diameter of the second end of the second light guiding tunnel is greater than a diameter of the first end of the second light guiding tunnel. A second opening is formed at the second end of the second light guiding tunnel. A diameter of the second opening is greater than a diameter of the first opening.

First claim

What is claimed is:

1. A light-emitting device, comprising:
a light source for emitting light;
a panel comprising a first surface and a second surface opposite to the first surface, the light source being close to the second surface; and
a light guiding structure disposed inside the panel for guiding the light emitted from the light source for generating a vignette effect, the light guiding structure comprising:
a first light guiding tunnel, a first end and a second end being…

Assignees

• Wistron Corp

Inventors

• Chen Kuang-Wen
• Huang Yu-Hsin
• Chen Fu-Chien
• Lai Chun-Chiang

Classifications

• F21V33/0052

  Mechanical Engineering · mapped topic

• G09G3/2092

  Physics · mapped topic

• H04N5/64

  Electricity · mapped topic

• G02B6/0096 Primary

  Physics · mapped topic

• G02B6/0008

  Physics · mapped topic