CN104237995A - Light guide plate and light source device - Google Patents

Abstract

The invention relates to a light guide plate and a light source device. The light guide plate includes: a light guide plate body and a plurality of fan-shaped micro light guide structures; the fan-shaped micro light guide structures are arranged on the light guide plate body. The invention can lead the light to have directivity to change the light beam propagation direction after the light is reflected and refracted for many times on the surface of the fan blade with curvature, and the fan-shaped micro light guide structure provides the directivity of the light, thereby taking the functions of light condensation and light scattering into account, leading the light to be uniformly emitted from the light guide plate and saving the lower diffusion sheet on the light guide plate.

Description

Light guide plate and light source device

technical field

The invention relates to a light guide plate and a light source device, in particular to a light guide plate and a light source device with the light guide plate.

Background technique

The dot shapes in known light guide plates, diffusion sheets or prism sheets include circles, spheres, V shapes, semicircles, pyramids, and prisms. The known dots are mainly formed on the surface or inside of light guide components such as light guide plates, diffusion sheets or prism sheets, and have the function of gathering or diffusing light.

Therefore, it is necessary to provide a light guide plate and a light source device to solve the above problems.

Contents of the invention

The present invention provides a light guide plate in order to solve the problems of the known technology. The light guide plate includes: a light guide plate body and a plurality of fan-shaped micro light guide structures; these fan-shaped micro light guide structures are arranged on the light guide plate ontology.

The present invention also provides a light source device, the light source device includes: a plurality of light sources, the light sources provide a light; and a light guide plate, the light guide plate includes: a light guide plate body, the light guide plate body includes a light incident surface and A light-emitting surface, the light-incident surface is opposite to the light-emitting surface; and a plurality of fan-shaped micro-light guide structures, and the fan-leaf-shaped micro-light guide structures are arranged on the light guide plate body, wherein the light from the light-incidence surface It enters the light guide plate, is modulated by the fan-shaped micro light guide structures, and leaves the light guide plate on the light exit surface.

By applying the light guide plate of the embodiment of the present invention, the light beam can be directed to change the propagation direction of the light beam after multiple reflections and refractions on the surface of the curved fan blade. Because the fan-shaped micro-light guide structure provides light directivity, taking into account the functions of light concentrating and astigmatism, the light can be evenly emitted from the light guide plate, and the lower diffuser on the light guide plate can be saved.

Description of drawings

FIG. 1A shows a top view of a light guide plate according to a first embodiment of the present invention;

FIG. 1B shows a side view of the light guide plate of the first embodiment of the present invention;

Fig. 2 shows a variant embodiment of the light guide plate of the present invention, wherein the fan-shaped micro light guide structures are arranged in a non-equidistant manner;

Fig. 3 shows a variant embodiment of the light guide plate of the present invention, wherein the fan-shaped micro light guide structures are arranged in pairs;

Fig. 4 shows a variant embodiment of the light guide plate of the present invention, wherein the fan-shaped micro light guide structures are arranged in a parallelogram array;

FIG. 5A and FIG. 5B show a variant embodiment of the light guide plate of the present invention, wherein the larger fan-shaped micro light guide structures and the smaller fan-leaf micro light guide structures are arranged in a staggered manner;

Fig. 6 shows a variant embodiment of the light guide plate of the present invention, wherein the larger fan-shaped micro light guide structures and the smaller fan-shaped micro light guide structures are arranged on the same straight line; and

FIG. 7 shows a light source device according to an embodiment of the present invention.

Description of main component symbols:

1 light source device

10 light sources

11 rays of light

100 light guide plate

110 Light guide plate body

111 incident surface

112 light emitting surface

120 fan-shaped micro light guide structure

120A The first leaf-shaped micro light guide structure

120B The second leaf-shaped micro light guide structure

120C The third leaf-shaped micro light guide structure

121 impeller

122 central axis

123 Ultrastructure

Detailed ways

Referring to FIG. 1A and FIG. 1B , it shows a light guide plate 100 according to the first embodiment of the present invention, which includes a light guide plate body 110 and a plurality of leaf-shaped micro light guide structures 120 . The fan-shaped micro light guide structure 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 exit surface 112. The light incident surface 111 is opposite to the light exit surface 112. In this embodiment, the fan-shaped micro light guide structures 120 are embedded in the light guide plate. The body 110 is located between the light incident surface 111 and the light exit surface 112 .

In the first embodiment of the present invention, the fan-shaped micro light guide structures 120 are embedded in the light guide plate body 110 and located between the light incident surface 111 and the light exit surface 112 . However, the above disclosure does not limit the present invention. In a variant embodiment, the fan-shaped micro light guide structures 120 can be provided on the light-incident surface 111 or the light-exit surface 112 through integral molding or secondary processing.

Referring to FIG. 1A and FIG. 1B again, each fan-shaped micro light guide structure 120 includes a plurality of impellers 121 and a central axis 122 , and the impellers 121 surround the central axis 122 . The impellers 121 can be connected to or separated from the central shaft 122 . The curved surface design, size, quantity, shape, and inclination of the impellers 121 can be adjusted according to design requirements.

Referring to Fig. 1A and Fig. 1B again, each leaf-shaped micro light guide structure 120 also includes a plurality of ultramicrostructures 123, and these ultramicrostructures 123 are formed on the surface of each impeller or embedded in each impeller 121 . The shape of the ultramicrostructures 123 can be circular, spherical, V-shaped, pyramidal, prismatic, irregular or other shapes, which can be convex or concave structures.

In FIG. 1A , the fan-shaped micro light guide structures 120 are equal in size and arranged in an equidistant manner. Referring to FIG. 2 , the fan-shaped micro light guide structures 120 can also be arranged in a non-equidistant manner. Referring to FIG. 3 , the fan-shaped micro light guide structures 120 can be arranged in pairs. Referring to FIG. 4 , the fan-shaped micro light guide structures 120 can be arranged in a parallelogram array.

Referring to FIG. 5A and FIG. 5B, in one embodiment, the fan-shaped micro light guide structures 120 may include a plurality of first fan-shaped micro light guide structures 120A and a plurality of second fan-shaped micro light guide structures 120B , the size of the first fan-shaped micro light guide structures 120A is larger than the size of the second fan-shaped micro light guide structures 120B, the first fan-shaped micro light guide structures 120A and the second fan-shaped micro light guide structures The light guide structures 120B are arranged in a staggered manner.

Referring to FIG. 6 , in another embodiment, the fan-shaped micro light guide structures 120 include a plurality of first fan-shaped micro light guide structures 120A, a plurality of second fan-shaped micro light guide structures 120B and a plurality of The third fan-shaped micro light guide structure 120C, the size of the first fan-shaped micro light guide structures 120A is larger than the second fan-shaped micro light guide structures 120B, the second fan-shaped micro light guide structures 120B is larger than the third fan-shaped micro light guide structure 120C, the first fan-shaped micro light guide structure 120A, the second fan-shaped micro light guide structure 120B and the third fan-shaped micro light guide structure 120C are arranged in a straight line from large to small.

Referring to FIG. 7 , it shows 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 . The light 11 enters the light guide plate 100 from the light incident surface 111 , is modulated by the fan-shaped micro light guide structures 120 , and leaves the light guide plate 100 at the light output surface 112 .

By applying the light guide plate of the embodiment of the present invention, the light beam can be directed to change the propagation direction of the light beam after multiple reflections and refractions on the surface of the curved fan blade. Because the fan-shaped micro-light guide structure provides light directivity, taking into account the functions of light concentrating and astigmatism, the light can be evenly emitted from the light guide plate, and the lower diffuser on the light guide plate can be saved.

In the above embodiments, the light source device mainly takes a direct light source as an example. 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 an edge-lit light source.

Although the present invention has been disclosed above with specific preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can still make some changes without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended claims.

Claims (10)

1. a light guide plate, this light guide plate comprises:

One light conducting plate body; And

The micro-light guide structure of multiple flabellum shape, the micro-light guide structure of these flabellum shapes is located at this light conducting plate body.

2. light guide plate as claimed in claim 1, wherein, this light conducting plate body comprises an incidence surface and an exiting surface, and this incidence surface is relative with this exiting surface, and the micro-light guide structure of these flabellum shapes is located at this incidence surface.

3. light guide plate as claimed in claim 1, wherein, this light conducting plate body comprises an incidence surface and an exiting surface, and this incidence surface is relative with this exiting surface, and the micro-light guide structure of these flabellum shapes is located at this exiting surface.

4. light guide plate as claimed in claim 1, wherein, this light conducting plate body comprises an incidence surface and an exiting surface, and this incidence surface is relative with this exiting surface, and the micro-light guide structure of these flabellum shapes to be embedded among this light conducting plate body and between this incidence surface and this exiting surface.

5. light guide plate as claimed in claim 1, wherein, the micro-light guide structure of each flabellum shape comprises multiple impeller and a central shaft, and these impellers are around this central shaft.

6. light guide plate as claimed in claim 5, wherein, the micro-light guide structure of each flabellum shape also comprises multiple ultrastructure, and these ultrastructures are formed at the surface of each impeller, or is embedded among each impeller.

7. light guide plate as claimed in claim 6, wherein, these Ultrastructural shapes are circular, spherical, V-arrangement, pyramid or prismatic.

8. light guide plate as claimed in claim 6, wherein, the micro-light guide structure of these flabellum shapes comprises the micro-light guide structure of multiple first flabellum shape and the micro-light guide structure of multiple second flabellum shape, the size of the micro-light guide structure of these the first flabellum shapes is greater than the micro-light guide structure of these the second flabellum shapes, the micro-light guide structure of these the first flabellum shapes and the arrangement interlaced with each other of the micro-light guide structure of these the second flabellum shapes.

9. light guide plate as claimed in claim 8, wherein, the micro-light guide structure of these flabellum shapes also comprises the micro-light guide structure of multiple 3rd flabellum shape, the size of the micro-light guide structure of these the second flabellum shapes is greater than the micro-light guide structure of these the 3rd flabellum shapes, these first, second and the descending arrangement in a straight line of the micro-light guide structure of the 3rd flabellum shape.

10. a light supply apparatus, this light supply apparatus comprises:

Multiple light source, these light sources provide a light; And

One light guide plate, this light guide plate comprises:

One light conducting plate body, this light conducting plate body comprises an incidence surface and an exiting surface, and this incidence surface is relative with this exiting surface; And

The micro-light guide structure of multiple flabellum shape, the micro-light guide structure of these flabellum shapes is located at this light conducting plate body, and wherein, this light enters this light guide plate from this incidence surface, is subject to the modulation of the micro-light guide structure of these flabellum shapes, and leaves this light guide plate at this exiting surface.