Patent ID: 9328895
Filing Date: 2016-05-03
CPC Classification: F21K,F21V,F21Y

Claim Text:
1. An illumination device, comprising: a base, having a supporting plane; at least one LED light source disposed on the supporting plane of the base and a light emitting surface of the LED light source being substantially parallel to the supporting plane of the base; and a diffusing element disposed on the supporting plane of the base to cover the at least one LED light source, wherein the diffusing element comprises: a first portion located above the at least one LED light source; and a second portion connected between the first portion and the base, a light transmittance rate difference between the first portion and the second portion being at least 4% to 40%, wherein an optical characteristic of the first portion is different from that of the second portion so that a non-continuous boundary is defined between the first portion and the second portion.