Light source module

  • US 9,075,175 B2
  • Filed: 02/01/2013
  • Issued: 07/07/2015
  • Est. Priority Date: 02/03/2012
  • Status: Active Grant
First Claim
Patent Images

1. A light source module, comprising:

  • a light guide plate comprising a first light emitting surface, a bottom surface opposite to the first light emitting surface, a first light incident surface connecting with the bottom surface and the first light emitting surface, and at least one optical microstructure unit, the optical microstructure unit comprising;

    at least two first optical microstructures, each of the least two first optical microstructures comprising a recess portion on the bottom surface and a protrusion portion on the bottom surface, and the protrusion portion connecting with the recess portion, wherein the protrusion portion is located between the first light incident surface and the recess portion, the recess portion comprises a first micro-surface and a second micro-surface connecting with the first micro-surface, and the protrusion portion comprises a third micro-surface and a fourth micro-surface connecting with the third micro-surface, wherein the second micro-surface and the third micro-surface are connected, an extension direction of the first micro-surface and the fourth micro-surface are substantially perpendicular to the first light emitting surface, and an extension direction of the second micro-surface and the third micro-surface are inclined relative to the first light incident surface;

    at least one light-collecting structure, comprising a second light emitting surface connecting with the first light incident surface, a second light incident surface, a first reflective surface connecting with the second light emitting surface and the second light incident surface, and a second reflective surface opposite to the first reflective surface and connecting with the second light emitting surface and the second light incident surface, wherein a section of the first reflective surface obtained by a first reference plane comprises a sectional line, and the sectional line comprises a first parabola, wherein the first reference plane is parallel to the first light emitting surface; and

    at least one light emitting device adapted to emit light beams, the light beams sequentially passing through the second light incident surface, the first reflective surface, the second light emitting surface, the first light incident surface to enter into the light guide plate, the light beams entering the light guide plate guiding by the optical microstructure unit to the first light emitting surface.

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