CN203656815U - Light guide plate with large light entering angle - Google Patents

Abstract

The utility model relates to a light guide technology, in particular to a light guide plate with a large light entering angle. The light guide plate comprises a light entering face, and planar lenses are manufactured or arranged on the light entering face or at the positions, provided with light sources, of the light entering face. The planar lenses are also called film lenses. Each planar lens comprises a main lens body and a plurality of wing lens bodies configured on the two sides of the main lens body, and the wing lens bodies are symmetrically configured on two sides of the main lens bodies. Due to the fact that the planar lenses comprise the main lens bodies and the wing lens bodies configured on two sides of the main lens bodies, arc faces in the wing lens bodies can have different curvatures, the diffusion angle of light rays can be expanded fully based on the refraction principle, surrounding light reflected totally can even be collected to recycle the light, and the use ratio of the light is improved. Under the condition of basically identical luminance, the number of the mounted light sources can be reduced, therefore, power consumption is low, a dark area cannot be generated, hot spots cannot be generated near the light entering face, and the light is emitted evenly. The light guide plate has the advantages of being excellent in optical quality, small in the number of the light sources, and low in power consumption.

Description

A kind of enter the large LGP of optic angle degree

Technical field

The utility model relates to leaded light technology, espespecially a kind of enter the large LGP of optic angle degree.

Background technology

Along with the continuous lifting of scientific and technological progress and display product performance, more and more high to the requirement of backlight, as lightweight, slimming, low power consumption, high brightness, bright dipping evenly, low cost etc.Backlight is mainly made up of light source and LGP, LGP is born the function that light source is changed into the area source of high brightness and uniform luminance, therefore, in fact be the requirement to LGP to the requirement of backlight, require LGP high-quality, under equal optical quality, can realize low power consumption and low cost etc.

Fig. 1 is the optical light guiding plate of side schematic diagram of prior art, comprises the incidence surface 20 of LGP 100, multiple light source 40(is installed as LED facing to incidence surface 20).According to the refraction principle of light, the light of light source 40 incides LGP 100 when interior from incidence surface 20, and light can produce refraction; Because light source 40(is as LED) incident scope certain, its light that incides LGP 100 also will be limited within the specific limits, the both sides that cause LGP 100 that light source 40 is set can form larger dark space 10, the brightness of LGP 100 is even not.

Fig. 2 is the another kind of optical light guiding plate of side schematic diagram of prior art, incidence surface 20 indentations of this LGP 100.Due to incidence surface 20 indentations of LGP 100, light source 40(is as LED) although incident scope suitable with the incident scope of the light source 10 of Fig. 1, but jagged incidence surface 20 can produce repeatedly refraction to the light of incident, the outgoing scope of light will be expanded, the dark space 10 that reduces LGP 100, the brightness uniformity of LGP 100 makes moderate progress.

Although incidence surface indentation the optical quality of the LGP LGP more smooth than incidence surface make moderate progress, but incident scope (angle) is still less than normal, under the condition of equal brightness, need more spot light just to there will not be dark space with the arrangement that forms comparatively dense, therefore power consumption is larger, and at nearly incidence surface, place there will be speck, and bright dipping is inhomogeneous.

A kind of new-type LGP of market demand, its incident scope (angle) is large, and the number of light sources of installation is few, still can reach equal brightness needs, therefore power consumption is less, there will not be dark space, and at nearly incidence surface, place also there will not be speck, and bright dipping is even.

Summary of the invention

The utility model technical issues that need to address are, though overcome incidence surface indentation the optical quality of the LGP LGP more smooth than incidence surface make moderate progress incident scope (angle) still less than normal, under the condition of equal brightness, need more spot light just there will not be dark space to form the arrangement of comparatively dense, therefore power consumption is large and there will be speck, the inhomogeneous deficiency of bright dipping near incidence surface place, release a kind of enter the large LGP of optic angle degree.This LGP incident scope (angle) is large, and the number of light sources of installation is few, still can reach equal brightness needs, therefore power consumption is less, there will not be dark space, and at nearly incidence surface, place also there will not be speck, and bright dipping is even.

In order to realize above-mentioned task, the utility model a kind of enter the large LGP of optic angle degree adopt following technical proposals:

Enter the LGP that optic angle degree is large, comprise incidence surface, on incidence surface or at incidence surface, the position making of light source is installed or planar lens is set.Planar lens is also referred to as film lens.

Technique scheme is further elaborated:

Described planar lens comprises main lens and the multiple flank lens in the configuration of the both sides of main lens, and multiple described flank lens are in the bilateral symmetry configuration of main lens.

Described flank lens are at one end met and are formed by arc surface and the medial surface in outside, and described medial surface is than the arc surface in described outside near main lens, and medial surface is plane or arc surface.

Compared with the existing technology, the beneficial effects of the utility model are:

One, the position that light source is installed on incidence surface or on incidence surface makes or arranges planar lens, because comprising main lens and the both sides at main lens, planar lens configures multiple flank lens, each arc surface in flank lens can be different curvature, can make full use of refraction principle and expand the diffusion angle of light, even can collect the light being totally reflected around and reclaim to realize light, improve the utilization rate of light.

They are two years old, because the diffusion angle of light is very large, in addition can collect the light being totally reflected around reclaims to realize light, the utilization rate of light improves, and in the essentially identical situation of brightness, can reduce the number of light sources of installation, therefore power consumption is less, and there will not be dark space, at nearly incidence surface, place also there will not be speck, and bright dipping is even.Realize the unification that LGP optical quality is good Yu number of light sources is few, power consumption is few.

Brief description of the drawings

Fig. 1 is the LGP floor map of prior art;

Fig. 2 is the LGP floor map of another prior art;

Fig. 3 is LGP schematic perspective view of the present utility model;

Fig. 4 is LGP floor map of the present utility model;

Fig. 5 is LGP light diffusion schematic diagram of the present utility model;

Fig. 6 is planar lens schematic diagram.

In figure: 100, LGP; 10, dark space; 20, incidence surface; 30, planar lens; 31, main lens; 32, flank lens; 321, the arc surface in outside; 322, medial surface; 323, meet and hold; 40, light source.

Detailed description of the invention

Introduce detailed description of the invention of the present utility model below in conjunction with accompanying drawing.

As shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of enter the large LGP 100 of optic angle degree, comprise incidence surface 20, on incidence surface 20 or the position that light source 40 is installed on incidence surface 20 make or planar lens 30 be set.Planar lens 30 not only can improve the optical quality of LGP 100, is also convenient to slimming, adapt to LGP lightweight, slimming, low power consumption, high brightness, bright dipping evenly, development trend cheaply.

Described planar lens 30 comprises main lens 31 and the multiple flank lens 32 in the configuration of the both sides of main lens 31, and wherein every side all configures multiple flank lens 32, and multiple described flank lens 32 are in the bilateral symmetry configuration of main lens 31.Main lens 31 is structure as a whole with multiple flank lens 32 of both sides configuration, forms entirety.

Described flank lens 32 form (as shown in Figure 6) by the arc surface 321 in outside with at one end (this end is the end 323 of meeting) gathering of medial surface 322, described medial surface 322 is than the arc surface in described outside 321 near main lens 31, and medial surface 322 is plane or arc surface.The curvature of each arc surface 321 can be different.

LGP of the present utility model is by mold injection molding, and its material is polymer resin, as polyacrylic resin, Merlon, polyvinyl resin, polymethyl methacrylate etc.

Embodiment of the present utility model just illustrates its detailed description of the invention, does not lie in and limits its technical scheme.The technical staff of the industry can make some amendment under the inspiration of the present embodiment, and the equivalence of doing according to the utility model the scope of the claims therefore all changes or modifies, and all belongs within the scope of the utility model Patent right requirement.

Claims (3)

1. enter the LGP that optic angle degree is large, comprise incidence surface, it is characterized in that: on incidence surface or at incidence surface, the position making of light source is installed or planar lens is set.

According to claim 1 a kind of enter the large LGP of optic angle degree, it is characterized in that: described planar lens comprises main lens and the multiple flank lens in the both sides configuration of main lens, and multiple described flank lens are in the bilateral symmetry configuration of main lens.

According to claim 2 a kind of enter the large LGP of optic angle degree, it is characterized in that: described flank lens are at one end met and formed by arc surface and the medial surface in outside, described medial surface is than the arc surface in described outside near main lens, and medial surface is plane or arc surface.

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