CN103175095A

CN103175095A - Lens, lens group and lamp

Info

Publication number: CN103175095A
Application number: CN2011104305185A
Authority: CN
Inventors: 周明杰; 杜金
Original assignee: Oceans King Lighting Science and Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Current assignee: Oceans King Lighting Science and Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2013-06-26

Abstract

The invention relates to a lens, a lens group and a lamp. The lens is a concave-convex type and rotational-symmetrical type lens and comprises a light-entering face and a light outlet face. The light-entering face is a spherical face and used for gathering light of a light source to the light outlet face, wherein the light outlet face is a free curved face, used for accurately controlling the emergent direction of the light of the light source and carrying out collimation on the light of the light source, so that the light of the light source is enabled to form a square even light spot. The light outlet diameter of the lens is 26.3 + / - 1% millimeters. The thickness of a center is 17 + / - 1% millimeters. A light intensity angle of the lens is 4.2 + / - 1 % degrees. According to concave-convex and rotational-symmetrical type lens, the light-entering face adopts the spherical face to gather the light of the light source, the light outlet face adopts the free curved face, accurate refraction is carried out by the free curved face to the light of the light source, the collimation is carried to the light of the light source, namely, a method for light source imaging is adopted, therefore, the light of the light source is enabled to form the even square light spot, a boundary is extremely clear, and therefore even lighting of the square light spot is achieved, and requirements of square lighting are satisfied.

Description

Lens, set of lenses and light fixture

[technical field]

The present invention relates to lighting field, relate in particular to a kind of lens, set of lenses and light fixture.

[background technology]

Along with the development and progress of LED (Light Emitting Diode) light source technology, people also improve constantly the requirement of lighting engineering, in some occasions, often need the illumination of special shape.As: automobile, street lamp and medical field just need the Uniform Illumination of square focus spot.Therefore, the secondary light-distribution lens of LED light source is had higher requirement.

Yet illumination secondary light-distribution lens in the market adopts sphere or aspheric rotation unsymmetric form more, but like this, the uniformity of illumination does not reach requirement, and is difficult to realize sharply marginated square illumination, can not satisfy the requirement of square illumination.

[summary of the invention]

In view of this, be necessary the lens that provide a kind of illumination uniformity to meet the demands.

In addition, also be necessary to provide a kind of set of lenses that is formed by said lens and the light fixture that uses these lens.

A kind of lens, shown in lens be concave-convex type and rotary symmetrical lens, comprise incidence surface and exiting surface; Shown in incidence surface be sphere, be used for collecting source light to described exiting surface, described exiting surface is free form surface, be used for accurately controlling the exit direction of source light, source light is collimated, so that source light forms square uniform light spots, described lens bright dipping bore is 26.3 ± 1% millimeters, center thickness is 17 ± 1% millimeters, and described lens light intensity angle is 4.2 ± 1% degree.

Preferably, described lens bright dipping bore is 26.3 millimeters, and center thickness is 17 millimeters, and described lens light intensity angle is 4.2 degree.

A kind of set of lenses comprises a plurality of above-mentioned lens.

Preferably, the centre distance of adjacent two lens is 55.75 ± 1% millimeters.

Preferably, the centre distance of adjacent two lens is 55.75 millimeters.

Preferably, described a plurality of lens are bar shaped, the degree of lip-rounding or square arranging.

A kind of light fixture comprises at least one light source and at least one lens, the corresponding light source of each lens, and described light source luminescent face is square, described lens are above-mentioned lens.

Preferably, described light source is LED light source, and described LED light source luminescence chip is 1 millimeter * 1 millimeter square.

Preferably, the distance between described light source and described lens is 8 ± 1% millimeters.

Preferably, the distance between described light source and described lens is 8 millimeters.

said lens, set of lenses and light fixture, lens concave-convex type and rotary symmetrical lens, incidence surface adopts sphere to collect the light of light source, exiting surface adopts free form surface, lens bright dipping bore is 26.3 ± 1% millimeters, center thickness is 17 ± 1% millimeters, the light intensity angle is 4.2 ± 1% degree, free form surface reflects accurately to source light, source light is collimated, namely adopt the method to the light source imaging, thereby make source light form uniform square focus spot, and the border is very clear, thereby realize the Uniform Illumination of square focus spot, satisfy the requirement of square illumination.

[description of drawings]

Fig. 1 is the structure cutaway view of lens in an embodiment;

Fig. 2 is the structure side view of lens shown in Figure 1

Fig. 3 is the index path of lens shown in Figure 1;

Fig. 4 is the illumination figure of lens shown in Figure 1;

Fig. 5 is the light intensity distribution curve flux of lens shown in Figure 1;

Fig. 6 is the schematic diagram of arranging of set of lenses in an embodiment;

Fig. 7 is the illumination figure of set of lenses shown in Figure 6;

Fig. 8 is the schematic diagram of arranging of set of lenses in another embodiment;

Fig. 9 is the illumination figure of set of lenses shown in Figure 8;

Figure 10 is the schematic diagram of arranging of set of lenses in another embodiment;

Figure 11 is the illumination figure of set of lenses shown in Figure 10.

[specific embodiment]

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.

Fig. 1 is the structure cutaway view of lens in an embodiment.Fig. 2 is the structure side view of lens shown in Figure 1.Fig. 3 is the index path of lens shown in Figure 1.In conjunction with Fig. 1 to Fig. 3, it is that square light source 200 light are adjusted to exiting surface that these lens 100 are used for, and is concave-convex type and rotary symmetrical lens, comprises incidence surface 110 and exiting surface 120.Incidence surface 110 is sphere, is used for collecting the light of light source 200 to exiting surface 120.Exiting surface 120 is free form surface, is used for accurately controlling the exit direction of light source 200 light, and light source 200 light are collimated, so that light source 200 light form square uniform light spots, realizes the square focus spot Uniform Illumination.

In this embodiment, lens 100 bright dipping bores are 26.3 ± 1% millimeters, are preferably 26.3 millimeters.Center thickness is 17 ± 1% millimeters, is preferably 17 millimeters.Lens 100 light intensity angles are 4.2 ± 1% degree, are preferably 4.2 degree.

Fig. 4 is the illumination figure of lens shown in Figure 1, and Fig. 5 is the light intensity distribution curve flux of lens shown in Figure 1.In conjunction with Fig. 1 to Fig. 5, these lens, light source 200 light of square light-emitting area incide incidence surface 110, and incidence surface 110 adopts sphere, the incidence surface 110 of sphere is convenient to collect the light of light source 200, and the light of tentatively adjusting light source 200 incides in the certain square region of exiting surface 120.Also be convenient to simultaneously regulate the bright dipping caliber size of lens 100.Light source 200 light incide exiting surface 120 after incidence surface 110, exiting surface 120 adopts free form surface, free form surface reflects accurately to light source 200 light, light source 200 light are collimated, namely adopt the method to light source 200 imagings, thereby make light source 200 light form uniform square focus spot on the target face on certain distance, and the border is very clear, thereby realize the Uniform Illumination of square focus spot, satisfy the requirement of square illumination.Can be read a book by Fig. 3 and Fig. 4, the light intensity angle of these lens 100 is 4.2 degree.The square focus spot uniformity of illuminance that lens 100 form can reach more than 80%, and the border is very clear.

In addition, also provide a kind of set of lenses.This set of lenses is arranged by a plurality of above-mentioned lens 100 and is formed.In this embodiment, the centre distance between adjacent two lens is 55.75 ± 1% millimeters, is preferably 55.75 millimeters.

Fig. 6 is the schematic diagram of arranging of set of lenses in an embodiment.Fig. 7 is the illumination figure of set of lenses shown in Figure 6.Fig. 8 is the schematic diagram of arranging of set of lenses in another embodiment.Fig. 9 is the illumination figure of set of lenses shown in Figure 8.Figure 10 is the schematic diagram of arranging of set of lenses in another embodiment.Figure 11 is the illumination figure of set of lenses shown in Figure 10.In conjunction with Fig. 5 to Figure 11, a plurality of lens 100 of set of lenses are respectively bar shaped, the degree of lip-rounding or square arranging, and form bar shaped, the degree of lip-rounding or square Uniform Illumination.

In addition, the present invention also provides a kind of light fixture.This light fixture comprises at least one light source 200 and the lens 100 that at least one is above-mentioned.The light-emitting area of light source 200 is square, the corresponding light source 200 of each lens 200.

In this embodiment, the distance between light source 200 and lens 100 is 8 ± 1% millimeters, is preferably 8 millimeters.Light source 200 is LED light source.The LED light source chip is 1 millimeter * 1 millimeter square, adopts X-lamp type high-power LED light source.

When this light fixture comprised a plurality of lens 100, a plurality of lens 100 were arranged into above-mentioned set of lenses.

This light fixture, the light of light source 200 forms uniform square focus spot through lens 100, and the border is very clear, thereby realizes the Uniform Illumination of square focus spot, satisfies the requirement of square illumination.

The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims

1. lens, is characterized in that, shown in lens be concave-convex type and rotary symmetrical lens, comprise incidence surface and exiting surface; Described incidence surface is sphere, be used for collecting source light to described exiting surface, described exiting surface is free form surface, be used for accurately controlling the exit direction of source light, source light is collimated, so that source light forms square uniform light spots, described lens bright dipping bore is 26.3 ± 1% millimeters, center thickness is 17 ± 1% millimeters, and described lens light intensity angle is 4.2 ± 1% degree.

2. lens according to claim 1, is characterized in that, described lens bright dipping bore is 26.3 millimeters, and center thickness is 17 millimeters, and described lens light intensity angle is 4.2 degree.

3. a set of lenses, is characterized in that, comprises the arbitrary described lens of a plurality of the claims 1 or 2.

4. set of lenses according to claim 3, is characterized in that, the centre distance of adjacent two lens is 55.75 ± 1% millimeters.

5. set of lenses according to claim 4, is characterized in that, the centre distance of adjacent two lens is 55.75 millimeters.

6. set of lenses according to claim 5, is characterized in that, described a plurality of lens are bar shaped, the degree of lip-rounding or square arranging.

7. a light fixture, comprise at least one light source and at least one lens, the corresponding light source of each lens, and described light source luminescent face is square, it is characterized in that, described lens are the arbitrary described lens of the claims 1 or 2.

8. light fixture according to claim 7, is characterized in that, described light source is LED light source, and described LED light source luminescence chip is 1 millimeter * 1 millimeter square.

9. light fixture according to claim 7, is characterized in that, the distance between described light source and described lens is 8 ± 1% millimeters.

10. light fixture according to claim 9, is characterized in that, the distance between described light source and described lens is 8 millimeters.