CN201373329Y

CN201373329Y - Led lamp lens

Info

Publication number: CN201373329Y
Application number: CN200920050497U
Authority: CN
Inventors: 欧阳剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-01-20
Filing date: 2009-01-20
Publication date: 2009-12-30
Anticipated expiration: 2019-01-20

Abstract

The utility model relates to a condenser lens for an LED lamp, which belongs to the technical field of optical refraction. The condenser lens comprises a lens body which is a conical cup body, an inward concave part is formed at the lower end of the lens body, an LED light source is positioned in the inward concave part, an inward convex or inward concave semispherical surface is formed in the inward concave part, a circular ring is arranged on the lens body, a central surface is formed on the downward concave condensing surface at the upper end of the lens body, more than one circular ring shaped frosted refraction surface is formed around the central surface. The condenser lens has the advantages that through the frosted circular ring, the LED can radiate the circular ring, the light ray can be slowed down, and the light ray in the lighting range can be distributed uniformly, thereby effectively solving the disadvantage that the middle part of the light source is bright while the periphery thereof is dark; the lighting range can be effectively enlarged through the circular ring, the lighting range can be adjusted to a big angle, for example, 60 degree, or even 100 degree.

Description

LED lamp lens

Technical field

The utility model relates to the light refraction technical field, particularly a kind of lens of LED lamp optically focused.

Background technology

Continuous development along with science and technology, high-power, high-brightness LED has been widely used in the daily life as light source, as street lamp, shot-light, auto lamp etc., in use, the gathering light beam that the bright dipping of requirement LED has definite shape, such focused beam must dispose custom-designed optical lens and could form at the light-emitting window place, announce that as State Patent Office a utility model name is called: high-power LED lens, the patent No. is 200720047134.4, its structure is: comprise lens body, lens body is the truncated cone-shaped cup, the bottom of lens body forms inner fovea part, the top of its inner fovea part is the lower peripheral surface of inside recess convex, the lens body top is recessed, and the top of lens body and lower peripheral surface relative position be the last sphere of evagination, and last sphere is towards lens body top evagination.There is following weak point in above-mentioned structure: 1, according to its principle and in kind the measurement as can be known, the light effective range 45 degree or below; 2, in the light scope, middle part light is strong and more secretly form uneven color all around, makes full use of lens body and transmits light.

The utility model content

The purpose of this utility model is to overcome said structure and has shortcoming, and provides a kind of illumination range light evenly to distribute, and promotes the LED lamp lens of illumination range greater than 120 degree.

The utility model is realized with the following methods: comprise lens body, lens body is conical cup, the lower end of lens body forms inner fovea part, led light source is positioned at inner fovea part, the hemisphere face that convex or indent are arranged in the inner fovea part, there is annulus the lens body upper end, and the recessed caustic surface of its described lens body upper end is provided with median plane, be provided with the more than one circular plane of refraction that is around median plane, one of them or more than one circular plane of refraction are made as milled sand surface.

The caustic surface of described lens body upper end is provided with two planes of refraction, and wherein a circular plane of refraction around the median plane of lens body upper end is made as milled sand surface, is not milled sand surface away from a circular plane of refraction of median plane.

The caustic surface of described lens body upper end is provided with three planes of refraction, and the circular plane of refraction in the centre of three planes of refraction is made as milled sand surface.

The surface of described milled sand surface is the plane.

The surface of described non-milled sand surface is the plane.

The surface of described non-milled sand surface is the cambered surface of indent, and this cambered surface is the aspheric surface curved surface, and the parabola that is a plurality of different number of degrees constitutes.

Described median plane is the plane.

Described median plane is the last sphere of evagination.

Described lens body lower end is provided with fixing feet.

Between effective illumination range 60 to 100 degree of described plane of refraction.

The beneficial effects of the utility model are: utilize the annulus of frosted shape, make LED shine annulus, light is become slowly, illumination range light is evenly distributed, effectively solve the bright and peripheral dark shortcoming in light source middle part; Annulus effectively promotes illumination range, illumination range is regulated reached the bigger angle of 60 degree, even can reach the lighting angle scope of 100 degree.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cutaway view of the A-A` among Fig. 1.

Fig. 3 is second embodiment cutaway view of Fig. 2.

Fig. 4 is the structural representation of lens body.

Fig. 5 is the structural representation of second embodiment of Fig. 4.

Fig. 6 is the structural representation of the 3rd embodiment of Fig. 4.

Specific embodiment

Below in conjunction with accompanying drawing the utility model is made concrete further instruction.

As shown in the figure, comprise lens body 1, lens body 1 is conical cup, the lower end of lens body 1 forms inner fovea part 101, and led light source 102 is positioned at inner fovea part 101, and the hemisphere face of convex or indent is arranged in the inner fovea part 101, there is annulus 2 lens body 1 upper end, the recessed caustic surface of its described lens body 1 upper end is provided with median plane 103, is provided with the more than one circular plane of refraction 104 that is around median plane 103, and one of them or more than one circular plane of refraction 104 are made as milled sand surface.

The caustic surface 105 of described lens body 1 upper end is provided with two planes of refraction 104, and wherein a circular plane of refraction 104 around the median plane of lens body 1 upper end is made as milled sand surface, is not milled sand surface away from a circular plane of refraction of median plane 103.

Circular plane of refraction 104 in centre that the caustic surface 105 of described lens body 1 upper end is provided with 104, three planes of refraction 104 of three planes of refraction is made as milled sand surface.

The surface of described milled sand surface is the plane.

The surface of described non-milled sand surface is the plane.

Described median plane 103 is the plane.

Described median plane 103 is the last sphere of evagination.

Described lens body 1 lower end is provided with fixing feet 106.

Effective illumination range 60 degree of described plane of refraction 104 are between 100 degree.

The recessed caustic surface 105 of described lens body 1 upper end is provided with three planes of refraction 104, the circular plane of refraction 104 in the centre of three planes of refraction 104 is made as milled sand surface, median plane 103 is the last sphere of evagination, lens body 1 lower end is provided with fixing feet 106, fixing feet 106 is convenient to be fixed on the led light source 102, solve traditional lens body 1 and shakiness often is installed and needs resetting, make shortcomings such as speed of production slows down.

Operation principle: when light source passes through the material of different densities, can produce refracted ray in its surface, and the formed ejaculation scope of wherein concentrating of light, in conjunction with this product, light source produces slowly refraction and overlapping with the light of median plane 103 of light through the milled sand surface on the annulus 2, makes the distribution of light uniform irradiation, has the annulus 2 of milled sand surface to design according to the Nie Feier principle, it is wideer that the annulus range of refractive is compared conventional lenses, and its ejaculation scope can reach 100 degree.

Claims

1, a kind of LED lamp lens, comprise lens body, lens body is conical cup, the lower end of lens body forms inner fovea part, and led light source is positioned at inner fovea part, and the hemisphere face of convex or indent is arranged in the inner fovea part, there is annulus the lens body upper end, it is characterized in that: the recessed caustic surface of described lens body upper end is provided with median plane, is provided with the more than one circular plane of refraction that is around median plane, and one of them or more than one circular plane of refraction are made as milled sand surface.

2, LED lamp lens according to claim 1, it is characterized in that: the caustic surface of described lens body upper end is provided with two planes of refraction, wherein a circular plane of refraction around the median plane of lens body upper end is made as milled sand surface, is not milled sand surface away from a circular plane of refraction of median plane.

3, according to the described LED lamp of claim 1 lens, it is characterized in that: the caustic surface of described lens body upper end is provided with three planes of refraction, and the circular plane of refraction in the centre of three planes of refraction is made as milled sand surface.

4, according to claim 2 or 3 described LED lamp lens, it is characterized in that: the surface of described milled sand surface is the plane.

5, according to claim 2 or 3 described LED lamp lens, it is characterized in that: the surface of described non-milled sand surface is the plane.

6, according to claim 2 or 3 described LED lamp lens, it is characterized in that: the surface of described non-milled sand surface is the cambered surface of indent, and this cambered surface is the aspheric surface curved surface, and the parabola that is a plurality of different number of degrees constitutes.

7, according to the described LED lamp of claim 1 lens, it is characterized in that: described median plane is the plane.

8, according to the described LED lamp of claim 1 lens, it is characterized in that: described median plane is the last sphere of evagination.

9, according to any described LED lamp lens of claim 1～3, it is characterized in that: described lens body lower end is provided with fixing feet.

10, according to the described LED lamp of claim 1 lens, it is characterized in that: between effective illumination range 60 to 100 degree of described plane of refraction.