CN203068421U

CN203068421U - Fly's-eye type LED light distribution lens

Info

Publication number: CN203068421U
Application number: CN2013200852144U
Authority: CN
Inventors: 李成勇; 唐伟华
Original assignee: CHENGDU OUSHENG PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: CHENGDU OUSHENG PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2013-02-25
Filing date: 2013-02-25
Publication date: 2013-07-17
Anticipated expiration: 2023-02-25

Abstract

The utility model relates to a fly's-eye type LED light distribution lens which comprises a lens body with an incident plane and an emergent plane, wherein the side of the lens body adopts a reflecting plane; and a fly's-eye lens array is arranged in the middle of the emergent plane. According to the utility model, light emitted from the center of the emergent plane is subjected to modulation and superposition through the fly's-eye lens array, so as to be uniformly emitted out, so that even the height of the lens body is reduced, the light is also ensured to have superior adjusting capability.

Description

A kind of compound eye LED light-distribution lens

Technical field

The utility model relates to a kind of LED light-distribution lens, particularly a kind of compound eye LED light-distribution lens.

Background technology

Led light source has been widely used in various lightings as the novel energy-conserving light source, as the par lamp of indoor use, and the street lamp of outdoor application, Tunnel Lamp, advertising lamp etc., generally speaking, led light source needs the light-distribution lens luminous intensity distribution to use.

The weak point of existing LED light-distribution lens is: the height of existing LED light-distribution lens is usually all than higher, only reflect by the fully reflecting surface that is positioned at its side in a large number, mode although it is so has the high benefit of regulating power, but it has increased difficulty and the cost of assembling, and such structure is also bigger to the injection moulding effectiveness affects of lens, if the height of simple compression light-distribution lens, the adjustability of lens is reduced, the uniformity of light field is affected, and this area urgently obtains a kind ofly can reducing the light-distribution lens whole height, can guarantee the compound eye LED light-distribution lens of light regulating power again.

The utility model content

The technical problems to be solved in the utility model is to overcome the above-mentioned deficiency of prior art, provides a kind of light regulating power strong and lower, compound eye LED light-distribution lens of being easy to assemble all highly usually.

For solving the problems of the technologies described above, the utility model provides following technical scheme:

A kind of compound eye LED light-distribution lens comprises lens body, and the two ends of described lens body are respectively the plane of incidence and exit facet, and the side of described lens body is reflecting surface, and the middle part of described exit facet is provided with fly eye lens array.By the center emergent light of exit facet is modulated stack by fly eye lens array, make the even outgoing of light, in the height minus of lens body hour, also can guarantee that light has good regulating power.

Preferably, described fly eye lens array is formed with exit facet center annular array by several fly's-eye lenses.

Preferably, described exit facet comprises concave surface.By compound eye modulation stack, final evenly outgoing effect.Need to prove, the end face that concave surface herein refers to exit facet by radial outer periphery rise, the indent gradually to middle part radially.

Preferably, described concave surface is the exit facet between the side of fly eye lens array and lens body, and the indent degree of depth of described concave surface increases progressively from outside to inside.Need to prove that increasing progressively from outside to inside herein refers to that concave surface is by near the place, big footpath of lens body lateral surface, increase gradually to the degree of depth near the lens body centre.

Preferably, described reflecting surface is combined by several scales.Adopt such structure, can reach uniform outgoing effect to the light modulation of wide-angle stack.

Preferably, the face shape of described scale is the plane.

Preferably, the face shape of described scale is curved surface, and the curvature between adjacent two scales is discontinuous.

Preferably, described several scales at reflecting surface around the axis of lens body around forming the some groups of scale endless belt of arranging along the axis direction of lens body, each scale shape in the described same group of scale endless belt is identical.Herein, it is evenly distributed and form around the rotation of lens body at exit facet to organize the scale endless belt more and be several scales, and the face shape parameter of each scale of described scale in same endless belt is identical, only is the position difference.When light penetrated, scale mutual superposition scattering modulation made that outgoing light COLOR COMPOSITION THROUGH DISTRIBUTION in illuminated field is more even in the scale endless belt.Light in illuminated field mutual superposition scattering modulation, makes that the light COLOR COMPOSITION THROUGH DISTRIBUTION in illuminated field that penetrates is more even through each scale in the some groups of scale endless belt of arranging along the axis direction of lens body, has further avoided the generation of hot spot.

Preferably, describedly respectively organize scale shape in the scale endless belt along the axis direction gradual change of lens body.Adopt such structure, make that the light COLOR COMPOSITION THROUGH DISTRIBUTION in illuminated field that penetrates is more even, need to prove that shape herein refers to the face shape parameter of scale.

Preferably, the curvature of the described plane of incidence is discontinuous.Adopt such structure, can further compress the lens volume, can add heavy caliber simultaneously, guarantee height.

Compared with prior art, the beneficial effects of the utility model are:By the center emergent light of exit facet is modulated stack by fly eye lens array, make the even outgoing of light, in the height minus of lens body hour, also can guarantee that light has good regulating power.

Description of drawings

Fig. 1 is perspective view of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the upward view of Fig. 1;

Fig. 5 is the structural representation that partly cuts open of the present utility model.

Mark among the figure: lens body-1; The plane of incidence-2; Exit facet-3; Reflecting surface-4; Fly eye lens array-5; Scale-6; Concave surface-7.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Embodiment of the present utility model is not limited to following examples, all belongs within the protection domain of the present utility model in the various variations of making under the prerequisite that does not break away from the utility model aim.

Extremely shown in Figure 5 as Fig. 1, a kind of compound eye LED of present embodiment light-distribution lens, comprise lens body 1, the two ends of lens body 1 are respectively the plane of incidence 2 and exit facet 3, the side of lens body 1 is reflecting surface 4, the curvature of the plane of incidence 2 is discontinuous, and namely the light of outgoing in the middle of the incident hole end surface utilizes the aspheric surface modulation makes the light of middle outgoing reach the angular distribution that needs.The middle part of exit facet 3 is provided with fly eye lens array 5, fly eye lens array 5 is formed with exit facet 3 center annular arrays by several fly's-eye lenses, exit facet 3 comprises concave surface 7, concave surface 7 herein refers to that the end face of exit facet 3 is risen by radial outer periphery, to middle part indent gradually radially, can further compress the lens volume, simultaneously can add heavy caliber, guarantee height, concave surface 7 is the exit facet 3 between the side of fly eye lens array 5 and lens body 1, the indent degree of depth of concave surface 7 increases progressively from outside to inside, increasing progressively from outside to inside herein refers to that concave surface 7 is by the place, big footpath near lens body 1 lateral surface, increase gradually to the degree of depth near lens body 1 centre.Reflecting surface 4 is combined by several scales 6, the face shape of scale 6 is curved surface, curvature between adjacent two scales 6 is discontinuous, in all the other embodiments, the face shape of scale 6 can also be the plane, several scales 6 at reflecting surface 4 around the axis of lens body 1 around forming some groups of scale 6 endless belt of arranging along the axis direction of lens body 1, each scale 6 shapes in same group of scale 6 endless belt are identical, each organizes scale 6 shapes in scale 6 endless belt along the axis direction gradual change of lens body 1, pass through said structure, emergent light is modulated stack by fly eye lens array 5, make the even outgoing of light, in the height minus of lens body 1 hour, also can guarantee that light has good regulating power.

The utility model is not limited to the aforesaid specific embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims

1. a compound eye LED light-distribution lens comprises lens body, and the two ends of described lens body are respectively the plane of incidence and exit facet, and the side of described lens body is reflecting surface, it is characterized in that: the middle part of described exit facet is provided with fly eye lens array.

2. compound eye LED light-distribution lens according to claim 1, it is characterized in that: described fly eye lens array is formed with exit facet center annular array by several fly's-eye lenses.

, compound eye LED light-distribution lens according to claim 1, it is characterized in that: described exit facet comprises concave surface.

4. compound eye LED light-distribution lens according to claim 3 is characterized in that: described concave surface is the exit facet between the side of fly eye lens array and lens body, and the indent degree of depth of described concave surface increases progressively from outside to inside.

5. according to arbitrary described compound eye LED light-distribution lens in the claim 1 to 4, it is characterized in that: described reflecting surface is combined by several scales.

6. compound eye LED light-distribution lens according to claim 5, it is characterized in that: the face shape of described scale is the plane.

7. compound eye LED light-distribution lens according to claim 6, it is characterized in that: the face shape of described scale is curved surface, the curvature between adjacent two scales is discontinuous.

8. compound eye LED light-distribution lens according to claim 7, it is characterized in that: described several scales at reflecting surface around the axis of lens body around forming the some groups of scale endless belt of arranging along the axis direction of lens body, each scale shape in the described same group of scale endless belt is identical.

9. compound eye LED light-distribution lens according to claim 8, it is characterized in that: described each scale shape is along the axis direction gradual change of lens body.

10. compound eye LED light-distribution lens according to claim 5, it is characterized in that: the curvature of the described plane of incidence is discontinuous.