TW201510591A - Lighting device and light guide thereof - Google Patents

Abstract

A light guide is provided. The light guide comprises a light guide body and a plurality of light guiding structures. The light guiding structures are disposed on the light guide body. Each light guiding structure comprises a central structure and a plurality of peripheral structures, and the peripheral structures surround the central structure.

Description

Light source device and light guide plate thereof

The present invention relates to a light source device, and more particularly to a light source device having a light guide plate.

The shape of the dot in the light guide plate, the diffusion sheet or the cymbal sheet has a circular shape, a spherical shape, a V shape, a semicircular shape, a pyramid shape, a prism shape, and the like. The conventional dot is mainly formed on the surface or inside of a light guiding member such as a light guide plate, a diffusion sheet or a cymbal sheet, and has a function of collecting or diffusing light.

The present invention provides a light guide plate for solving the problems of the prior art, and includes a light guide plate body and a plurality of micro light guide units. The micro-light guiding unit is disposed on the light guiding plate body, wherein each micro-light guiding unit comprises a central structure and a plurality of peripheral structures surrounding the central structure.

According to the light guide plate of the embodiment of the invention, the light can be provided by the central structure of the micro light guiding unit and the peripheral structure to provide directivity of light, and the function of collecting light and astigmatism can be combined to enable the light to be uniformly emitted from the light guide plate. In an embodiment, the lower diffusion sheet above the light guide plate can be saved. The shape, the number, the curvature, the depth and the size of the central structure and the peripheral structure can be designed according to requirements, and in an embodiment, can be used to solve the local optical brightening problem.

1‧‧‧Light source device

10‧‧‧Light source

11‧‧‧Light

100‧‧‧Light guide plate

110‧‧‧Light guide body

111‧‧‧Into the glossy surface

112‧‧‧Glossy

120‧‧‧Micro-light guide unit

120A‧‧‧First micro light guide unit

120B‧‧‧Second micro-light guide unit

120C‧‧‧The third micro-light guide unit

121‧‧‧Central structure

122‧‧‧ Peripheral structure

1A is a plan view showing a light guide plate according to an embodiment of the present invention; FIG. 1B is a side view showing a light guide plate of the embodiment of FIG. 1A; and FIGS. 2A and 2B are views showing a micro light guide unit according to an embodiment of the present invention; a detail of the light guide plate of the present invention, wherein the micro light guide units are arranged in a non-equidistant manner; and FIG. 4A shows a modification of the light guide plate of the present invention, wherein the micro guide The light units are arranged in pairs in pairs; FIG. 4B shows a modification of the light guide plate of the present invention, wherein the micro light guiding units are arranged in an oblique direction; and FIGS. 5A and 5B are diagrams showing the light guiding plate of the present invention. a modification in which a micro-light guide unit having a larger size and a micro-light guide unit having a smaller size are arranged in a staggered manner; and FIG. 6 is a view showing a modification of the light guide plate of the present invention, wherein a larger size The micro-light guiding unit is arranged on the same straight line as the smaller micro-light guiding unit; FIG. 7 shows a modification of the light guiding plate of the present invention, wherein two different shapes of micro-light guiding units are applied to a single guide Above the light board; and Figure 8 shows the hair A light source device of the embodiment.

Referring to FIGS. 1A and 1B, a light guide plate 100 according to an embodiment of the present invention includes a light guide plate body 110 and a plurality of micro light guide units 120. The micro light guiding unit 120 is disposed on the light guide plate body 110. The light guide plate body 110 includes a light incident surface 111 and a light exiting surface 112. The light incident surface 111 is opposite to the light emitting surface 112. In this embodiment, the micro light guiding units 120 are disposed on the light emitting surface 112. Light exit surface 112.

In the foregoing embodiment, the micro-light guiding units 120 are disposed on the light-emitting surface 112 by integral molding or secondary processing. However, the above disclosure does not limit the present invention. In a modification, the micro-light guiding units 120 may be provided on the light-incident surface 111 in an integral molding or secondary processing. In another modification, the micro-light guide units 120 are embedded in the light guide plate body 110 and located between the light-incident surface 111 and the light-emitting surface 112.

Referring again to FIGS. 1A and 1B, each micro-light guide unit 120 includes a central structure 121 and a plurality of peripheral structures 122 surrounding the central structure 121. The peripheral structures 122 can be connected or separated from the central structure 121. The curved structures, dimensions, number of shapes, and inclination of the peripheral structures 122 and the center structure 121 can be adjusted according to design requirements.

Referring to FIGS. 2A and 2B, in an embodiment, the central structure 121 is a convex structure, and the peripheral structures 122 are concave structures. The central structure 121 and the contour shapes of the peripheral structures 122 may be spherical, cylindrical, pyramidal, prismatic or other shapes.

In FIG. 1A, the micro-light guiding units 120 are equal in size and arranged in an equidistant manner. Referring to FIG. 3, the micro-light guiding units 120 may also be arranged in a non-equidistant manner. Referring to FIG. 4A, the micro-light guiding units 120 may be arranged in pairs in pairs. Referring to FIG. 4B, the micro-light guiding units 120 may be arranged obliquely.

Referring to FIGS. 5A and 5B, in an embodiment, the micro-light guiding units 120 may include a plurality of first micro-light guiding units 120A and a plurality of second micro-light guiding units 120B, and the first micro-light guiding units 120A is larger than the size The two micro-light guiding units 120B are arranged in a staggered manner with the first micro-light guiding units 120A and the second micro-light guiding units 120B.

Referring to FIG. 6 , in another embodiment, the micro-light guiding unit 120 includes a plurality of first micro-light guiding units 120A, a plurality of second micro-light guiding units 120B, and a plurality of third micro-light guiding units 120C. The first micro-light guide unit 120A is larger in size than the second micro-light guide unit 120B, and the second micro-light guide unit 120B is larger in size than the third micro-light guide unit 120C, and the first micro-guide The light unit 120A, the second micro light guiding unit 120B, and the third micro light guiding unit 120C are arranged in a line from large to small.

Referring to FIG. 7, in an embodiment, the micro-light guiding units 120 may include a plurality of first micro-light guiding units 120A and a plurality of second micro-light guiding units 120B, and the first micro-light guiding units 120A The shape is different from the second micro light guiding units 120B. In this embodiment, the contours of the first micro-light guiding units 120A are spherical, and the contours of the second micro-light guiding units 120B are pyramidal.

Referring to Fig. 8, there is shown a light source device 1 according to an embodiment of the present invention, which includes a plurality of light sources 10 and the aforementioned light guide plate 100. The light source 10 provides a light 11 that enters the light guide plate 100 from the light incident surface 111, is modulated by the micro light guide unit 120, and exits the light guide plate 100 on the light exit surface 112.

According to the light guide plate of the embodiment of the invention, the light can be provided by the central structure of the micro light guiding unit and the peripheral structure to provide directivity of light, and the function of collecting light and astigmatism can be combined to enable the light to be uniformly emitted from the light guide plate. In an embodiment, the lower diffusion sheet above the light guide plate can be saved. The shape, the number, the curvature, the depth, and the size of the center structure and the surrounding structure can be designed according to requirements, and in an embodiment, Used to solve local optical brightening problems.

In the above embodiment, the light source device is mainly exemplified by a direct light source. However, the above disclosure does not limit the present invention, and the light guide plate of the present invention can also be applied to a light source device of a side-entry light source.

Although the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100‧‧‧Light guide plate

110‧‧‧Light guide body

120‧‧‧Micro-light guide unit

121‧‧‧Central structure

122‧‧‧ Peripheral structure

Claims (10)

A light guide plate comprising: a light guide plate body; and a plurality of micro light guide units disposed on the light guide plate body, wherein each micro light guide unit comprises a central structure and a plurality of peripheral structures surrounding the peripheral structure Central structure. The light guide plate of the first aspect of the invention, wherein the light guide plate body comprises a light incident surface and a light exiting surface, wherein the light incident surface is opposite to the light emitting surface, and the micro light guiding units are disposed in the light incident surface. The light guide plate of the first aspect of the invention, wherein the light guide plate body comprises a light incident surface and a light exiting surface, wherein the light incident surface is opposite to the light emitting surface, and the micro light guiding units are disposed on the light emitting surface. . The light guide plate of the first aspect of the invention, wherein the light guide plate body comprises a light incident surface and a light exiting surface, the light incident surface is opposite to the light emitting surface, and the micro light guiding units are embedded in the light guide plate. The body is located between the light incident surface and the light exit surface. The light guide plate of claim 1, wherein the peripheral structures are separated from the central structure. The light guide plate of claim 1, wherein the central structure is a convex structure, and the peripheral structures are concave structures. The light guide plate of claim 6, wherein the central structure and the peripheral structures are spherical, cylindrical, pyramidal or prismatic. The light guide plate of claim 6, wherein the micro light guiding unit comprises a plurality of first micro light guiding units and a plurality of second micro light guiding sheets The first micro-light guiding unit is larger in size than the second micro-light guiding unit, and the first micro-light guiding unit and the second micro-light guiding unit are staggered with each other. The light guide plate of claim 8, wherein the micro light guide unit further comprises a plurality of third micro light guide units, the second micro light guide units having a size larger than the third micro light guides The units, the first, second and third micro-light guiding units are arranged in a line from large to small. A light source device comprising: a plurality of light sources for providing a light; and a light guide plate comprising: a light guide plate body, comprising a light incident surface and a light exit surface, the light incident surface being opposite to the light exit surface; and a plurality of micro a light guiding unit is disposed on the light guide plate body, wherein the light enters the light guide plate from the light incident surface, is modulated by the micro light guiding unit, and leaves the light guide plate on the light emitting surface, wherein each light The light guiding unit includes a central structure and a plurality of peripheral structures surrounding the central structure.