CN201330993Y

CN201330993Y - LED light guide lens structure capable of evenly guiding light

Info

Publication number: CN201330993Y
Application number: CNU2008201996749U
Authority: CN
Inventors: 饶振奇; 何信威; 张中彦; 黄子欣
Original assignee: Suzhou Lichuang Science and Technology Co Ltd
Current assignee: Suzhou Lichuang Science and Technology Co Ltd
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2009-10-21
Anticipated expiration: 2018-12-18

Abstract

The utility model provides an LED light guide lens structure capable of evenly guiding light. The light guide lens is a stereo light guide body, and the structure of the light guide lens in a better embodiment is mainly characterized in that the light guide lens comprises a light leading-out surface, an LED projection space and a curved light guide surface, wherein the light leading-out surface arranged on the outer side of the light guide lens is a flat surface or an arc surface, the LED projection space is arranged on the inner side of the light guide lens to align the position and contain an LED, the inner end of the LED projection space is defined to form an inner wall which is corresponding to the LED at intervals, and the curved light guide surface is disposed on the inner wall of the LED projection space and includes a concave divergent area in the center and a convex condensing area on the periphery of the concave divergent area. Consequently, the light guide lens can lead out evenly distributed light with relatively big area, and achieve the practical development of preventing impurities and germs accumulating, bringing convenience to wipe and clean, and bringing convenience to attaching and combination of light diffusion films.

Description

But a kind of LED light guiding lens structure of even light-guiding

Technical field

The utility model relates to a kind of light guiding lens structure, described light guiding lens is a kind of being used for to guide the structure that diffusion light emitting diode (LED) emits beam, and is meant that especially a kind of light emitting diode accommodation space inwall of these lens is provided with the innovative design of curved light guiding surface.

Background technology

It is investigated, general light emitting diode (LED) is by a lens packages, these lens are generally the hemisphere bodily form, the light that light-emitting diode chip for backlight unit sent can be concentrated, but also therefore, make light emitting diode luminous be confined near the scope its optical axis, cause the dazzling luminous point of cohesion shape, therefore when being applied to various light source lamp product, usually must relend assistant director of a film or play's tabula rasa or light guiding lens member obtaining uniform brightness effect, yet, if light emitting diode directly is laid in the LGP below, because the light emitting diode area is minimum, therefore need to use the light emitting diode of quite a lot of quantity; Another kind then is to adopt the side-light type framework, utilize light emitting diode to provide its light by the LGP edge, yet this kind side-light type framework is when institute's palpus light source area is big, and the light energy that can be conveyed to the LGP zone line just can be successively decreased relatively, so the area size of its light source is promptly limited to.

At the problems referred to above, there is the dealer to develop the light guiding lens structure of Improvement type, its relevant patent is as " mirror body and use the light emitting diode of the uniformly light-emitting of mirror body " patent of invention of: Taiwan letters patent book number I261654, it is the mirror body of continuous curve surface that this patent provides a kind of acting surface, the acting surface of this mirror body (be light derive face) central authorities are that a recess defines one and disperses face, this disperses the face outside then is a caustic surface, and its thickness is increased outwardly gradually by the inboard; With this with light emitting diode near near the highlight strength light distributed the optical axis, see through the refraction mode and dispersed and, light emitting diode can be sent than large tracts of land and equally distributed light away from optical axis; But this kind existing structure finds still to exist following problems in reality is used:

1, this existing structure is arranged at the acting surface (being the outer face) of its mirror body in order to the continuous curve surface that reaches the refracted ray effect, thus, because this acting surface is roughness, and the acting surface of described mirror body is generally exsertion part when being applied to various light source lamp, therefore shelter evil people and countenance evil practices easily, the inconvenient problem of wiping cleaning is arranged.

2, because the acting surface of its mirror body is a continuous curve surface, be roughness, in process of production as when desiring to cover a light diffusion barrier with the even effect of further reinforcement light again on its acting surface surface, will have the problem that is difficult to carry out because of the smooth attaching face of shortcoming, real is shortcoming.

Use at above-mentioned existing LED light guiding lens structure and to go up the problem that exists, how to develop a kind of innovation structure that can have more desirable practicality, thought the target and the direction of breakthrough in fact for remaining relevant industry.

Thus, the inventor this in manufacturing development and the design experiences of being engaged in Related product for many years, at above-mentioned target, in detail after design and the scrupulous assessment, eventually this creation of a true tool practicality.

Summary of the invention

But the purpose of this utility model provides a kind of LED light guiding lens structure of even light-guiding, the curved face part of its refracted ray is located at mirror external body acting surface and sheltering evil people and countenance evil practices easily of still existing, the wiping cleaning is inconvenient and be difficult to attach problem such as light diffusion barrier to solve on the existing light guiding lens structural design.

For achieving the above object, the technical solution adopted in the utility model is: but a kind of LED light guiding lens structure of even light-guiding, and described light guiding lens is the light penetrating object of a solid, comprising: a light is derived face, is located at the outside portion of light guiding lens; At least one LED projecting space is located at the inside portion of light guiding lens, and described LED is placed in described LED projecting space, and the inner of described LED projecting space defines that to form an inwall corresponding with the LED interval; And the curved light guiding surface of being located at this LED projecting space inwall, this curved light guiding surface comprises the inner concavity radiating area that is positioned at central authorities, and the convex optically focused zone that is positioned at this inner concavity radiating area periphery, the thickness of described inner concavity radiating area is increased progressively outward by the inboard, and the thickness in described convex optically focused zone is then successively decreased outward by the inboard.

Related content in the technique scheme is explained as follows:

1, in the such scheme, the surface that described light is derived face is combined with a light diffusion barrier.

2, in the such scheme, described LED projecting space is single group setting in the light guiding lens inside portion or is plural groups arrangement setting spaced apart.

3, in the such scheme, when described LED projecting space was plural groups arrangement spaced apart and is provided with, each was organized the LED projecting space and is the alignment or the setting of staggering mutually mutually.

4, in the such scheme, the side position is provided with the taper sidewall between the inside portion of described light guiding lens, the outside portion.

5, in the such scheme, described light derivation face is a burnishing surface or is a cambered surface.

For achieving the above object, the technical solution adopted in the utility model is: but a kind of LED light guiding lens structure of even light-guiding, and described light guiding lens is the light penetrating object of a solid, comprising: a light is derived face, is located at the outside portion of light guiding lens; And the curved light guiding surface of being located at described light guiding lens inside portion, described curved light guiding surface comprises the inner concavity radiating area that is positioned at central authorities, and the convex optically focused zone that is positioned at described inner concavity radiating area periphery, the thickness of described inner concavity radiating area is increased progressively outward by the inboard, and the thickness in described convex optically focused zone is then successively decreased outward by the inboard.

Related content in the technique scheme is explained as follows:

2, in the such scheme, the side position is provided with the taper sidewall between the inside portion of described light guiding lens, the outside portion.

3, in the such scheme, described light derivation face is a burnishing surface or is a cambered surface.

The technical characterstic that the utility model is dealt with problems is that mainly described light guiding lens comprises: a light is derived face, is located at the light guiding lens outside portion, and described light derivation face is a burnishing surface or is a cambered surface; The LED projecting space is located at the light guiding lens inside portion, and is wherein ccontaining for the LED contraposition, and formation one inwall is defined in LED projecting space the inner can be corresponding at interval with LED; One curved light guiding surface is located at described inwall, and this curved light guiding surface comprises the inner concavity radiating area that is positioned at central authorities, and the convex optically focused zone that is positioned at inner concavity radiating area periphery; Innovate unique design whereby, make the utility model contrast prior art, following advantage is arranged:

The first, because described curved light guiding surface is the built-in design of being located at LED projecting space inwall, so the outside portion of light guiding lens can be made as the formation state that light is derived face, with this light guiding lens can be derived than large tracts of land and equally distributed light, can also reach prevent to shelter evil people and countenance evil practices, practical improvement that the wiping cleaning is convenient.

The second, be located at LED projecting space inwall by described curved light guiding surface, the light guiding lens outside portion is made as the structural design that light is derived face, light guiding lens can be derived than large tracts of land and equally distributed light, and its light burnishing surface form of deriving face light diffusion barrier of being more convenient for attach combination.

Description of drawings

Accompanying drawing 1 is the view sub-anatomy of the utility model light guiding lens and LED;

Accompanying drawing 2 is the assembled sectional view of the utility model light guiding lens and LED;

Accompanying drawing 3 is the light guide effect schematic diagram of the utility model light guiding lens;

Accompanying drawing 4 is another enforcement illustration of the utility model light guiding lens structure;

Accompanying drawing 5 be the light of the utility model light guiding lens face of deriving can be again in conjunction with the enforcement illustration of a light diffusion barrier;

Accompanying drawing 6 is that the utility model LED projecting space distributional pattern is implemented illustration one;

Accompanying drawing 7 is that the utility model LED projecting space distributional pattern is implemented illustration two;

Accompanying drawing 8 is another enforcement illustration of the utility model light guiding lens structural form.

In the above-mentioned accompanying drawing: 10, light guiding lens; 10B, light guiding lens; 11, outside portion; 12, interior survey portion; 12B, interior survey portion; 20, light is derived face; 30, LED accommodation space; 31, inwall; 40, LED; 50, curved light guiding surface; 51, inner concavity radiating area; 52, convex optically focused zone; 60, light diffusion barrier; 70, taper sidewall.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: but a kind of LED light guiding lens structure of even light-guiding,

As shown in Figure 1 and Figure 2, described light guiding lens is the light penetrating object of a solid, comprising: a light is derived face 20, is located at the outside portion 11 of light guiding lens 10, and described light derivation face 20 is made as a burnishing surface or is a cambered surface;

At least one LED projecting space 30 is located at the inside portion 12 of light guiding lens 10, is placed in wherein for LED 40 contrapositions, and the inner of described LED projecting space 30 defines that to form an inwall 31 corresponding with the LED interval; And

Be located at the curved light guiding surface 50 of described inwall 31, this curved light guiding surface 50 comprises the inner concavity radiating area 51 that is positioned at central authorities, and the convex optically focused zone 52 that is positioned at described inner concavity radiating area 51 peripheries, wherein, the thickness of described inner concavity radiating area 51 is increased progressively outward by the inboard, and the thickness in described convex optically focused zone 52 is successively decreased outward by the inboard.

Form design by said structure, now be described as follows with regard to user mode of the present utility model:

As shown in Figure 3, be provided with the structural design of curved light guiding surface 50 by the inwall 31 of described LED projecting space 30, make light that LED 40 sent near its optical axis L zone, can be by the in addition diffusion laterally of the inner concavity radiating area 51 of these curved light guiding surface 50 central authorities, and the convex optically focused zone 52 of these inner concavity radiating area 51 peripheries, can be condensed reinforcement by the light that the periphery is more weak, can be obtained wide expansion of area (indicating) and uniform leaded light benefit by this as W among the figure.

Wherein, described LED projecting space 30 is that single group is provided with (as shown in Figure 1 and Figure 2) in light guiding lens 10 inside portions 12; Light guiding lens 10B also or as shown in Figure 4, its LED projecting space 30 is plural groups arrangement spaced apart; And for example shown in Figure 5, the light of described light guiding lens 10B is derived face 20 surfaces can be again in conjunction with a light diffusion barrier 60, to reach the more uniform light guide effect of diffusion.

Wherein, when described LED projecting space 30 is plural groups arrangement spaced apart, be to be provided with alignment (as shown in Figure 6) mutually or stagger mutually (as shown in Figure 7).

Wherein, the side position between the inside and

outside sidepiece

11,12 of described light guiding lens 10 (or 10B) is provided with taper sidewall 70.

For another shown in Figure 8, another enforcement illustration for described light guiding lens 10 structures, present embodiment is different from the previous embodiment part, mainly be to be that this curved light guiding surface 50 is to be located at light guiding lens 10B inside portion 12B and not have described LED projecting space 30 structures, therefore can obtain wide expansion of area and leaded light benefit uniformly equally by the inner concavity radiating area 51 of described curved light guiding surface 50 and convex optically focused zone 52.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

But 1, a kind of LED light guiding lens structure of even light-guiding, described light guiding lens is the light penetrating object of a solid, it is characterized in that: comprising:

One light is derived face, is located at the outside portion of light guiding lens;

At least one LED projecting space is located at the inside portion of light guiding lens, and described LED is placed in described LED projecting space, and the inner of described LED projecting space defines that to form an inwall corresponding with the LED interval;

And the curved light guiding surface of being located at this LED projecting space inwall, this curved light guiding surface comprises the inner concavity radiating area that is positioned at central authorities, and be positioned at the convex optically focused zone of this inner concavity radiating area periphery, the thickness of described inner concavity radiating area is increased progressively outward by the inboard, and the thickness in described convex optically focused zone is then successively decreased outward by the inboard.
But 2, the LED light guiding lens structure of even light-guiding according to claim 1 is characterized in that: the surface that described light is derived face is combined with a light diffusion barrier.
But 3, the LED light guiding lens structure of even light-guiding according to claim 1 is characterized in that: described LED projecting space is provided with for single group in the light guiding lens inside portion or is plural groups arrangement setting spaced apart.
But 4, the LED light guiding lens structure of even light-guiding according to claim 3 is characterized in that: when described LED projecting space was plural groups arrangement spaced apart and is provided with, each was organized the LED projecting space and is the alignment or the setting of staggering mutually mutually.
But 5, the LED light guiding lens structure of even light-guiding according to claim 1, it is characterized in that: the side position is provided with the taper sidewall between the inside portion of described light guiding lens, the outside portion.
But 6, the LED light guiding lens structure of even light-guiding according to claim 1 is characterized in that: described light derivation face is a burnishing surface or is a cambered surface.
But 7, a kind of LED light guiding lens structure of even light-guiding, described light guiding lens is the light penetrating object of a solid, it is characterized in that: comprising:

One light is derived face, is located at the outside portion of light guiding lens;

And the curved light guiding surface of being located at described light guiding lens inside portion, described curved light guiding surface comprises the inner concavity radiating area that is positioned at central authorities, and the convex optically focused zone that is positioned at described inner concavity radiating area periphery, the thickness of described inner concavity radiating area is increased progressively outward by the inboard, and the thickness in described convex optically focused zone is then successively decreased outward by the inboard.
But 8, the LED light guiding lens structure of even light-guiding according to claim 7 is characterized in that: the surface that described light is derived face is combined with a light diffusion barrier.
But 9, the LED light guiding lens structure of even light-guiding according to claim 7, it is characterized in that: the side position is provided with the taper sidewall between the inside portion of described light guiding lens, the outside portion.
But 10, the LED light guiding lens structure of even light-guiding according to claim 7 is characterized in that: described light derivation face is a burnishing surface or is a cambered surface.