Light guide plate

• Main Authors: XU LICHEN, ZHANG TAIHAO, LIAO SHENGRONG
• Format: Patent
• Language: Chinese; English
• Published: 23.03.2011
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

The invention relates to a light guide plate comprising a incident surface, wherein the incident surface is provided with at least one circular arc-shaped structure and a plurality of V-shaped grooves along the circular arc-shaped surface of the circular arc-shaped structure; the V-shaped grooves in the light guide plate are formed by cutting through the rotating around the central shaft by utilizing a cutter; the processing technology is simple and rapid; the shape of the produced grooves has good repeatability; and the grooves in the circular arc-shaped structure make the light rays emitted by a light emitting diode be effectively scattered when entering the light guide plate so as to eliminate the bright and dark areas of the light emitting from the light guide plate and the phenomena of uneven light emitting of horoscopic bright rays and the like.