Light guide plate and light source module

Abstract

The invention discloses a light guide plate and a light source module. The light guide plate comprises a main body and a plurality of micro-structures. The main body comprises a light incident surface and a light exiting surface, which is connected to the light incident surface. The micro-structures are arranged on the light exiting surface and comprise a first optical surface, a second optical surface, a third optical surface, and a fourth optical surface. The first optical surface is inclined relative to the light incident surface, and is connected to the light exiting surface to form a first included angle; the second optical surface is inclined relative to the light incident surface, and forms a second included angle with the light existing surface; the third optical surface connects the light exiting surface, the first optical surface, and the second optical surface and forms a third included angle with the light exiting surface; and the fourth optical surface faces the third optical surface, connects the light exiting surface, the first optical surface and the second optical surface, and forms a fourth included angle with the light exiting surface.

Description

technical field [0001] The invention relates to a light guide element, and in particular to a light guide plate and a light source module. Background technique [0002] Generally, the light guide plate used in the backlight module has a light incident surface, a light output surface and a reflective surface. The light provided by the light source enters the light guide plate from the light incident surface of the light guide plate, and exits from the light exit surface of the light guide plate. Another type of light guide plate used on a lamp has two opposite light emitting surfaces. After the light provided by the light source enters the light guide plate, it is emitted from the two light emitting surfaces respectively. Moreover, a transverse V-shaped structure is usually provided on the light-emitting surface of the light guide plate, so that the light can be more uniformly mixed after entering the light guide plate. [0003] However, such a transverse V-shaped structur...

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to provide a light guide plate and a light source module, which can improve the existing technology through the microstructure on the main body of the light guide plate and the light mixing structure near the light incident place of the light guide plate. The light guide plate has obvious bright and dark lines on the light incident side, resulting in uneven appearance, which can effectively improve the optical effect of the light guide plate

Images