CN103591550A

CN103591550A - LED light distributing lens

Info

Publication number: CN103591550A
Application number: CN201310604042.1A
Authority: CN
Inventors: 郑鹏飞
Original assignee: CHENGDU PULSE OPTICAL Co Ltd
Current assignee: CHENGDU PULSE OPTICAL Co Ltd
Priority date: 2013-11-22
Filing date: 2013-11-22
Publication date: 2014-02-19

Abstract

The invention discloses an LED light distributing lens which comprises an incident plane and an outgoing plane. The center position of the incident plane is a convex lens face. Annular teeth are arranged at the outer side of the convex lens face. Tooth points of the annular teeth are identical to the convex lens face in protruding direction and exceed a top point of the convex lens face. The side faces of the annular teeth are formed by different hook faces in a spliced mode. According to the LED light distributing lens, under the condition that the requirement for a semi-light-intensity angle is satisfied, high light efficiency, high light evenness and low cost are guaranteed.

Description

LED light-distribution lens

Technical field

The present invention relates to illuminating device, relate in particular to a kind of LED light-distribution lens.

Background technology

Current LED is as a kind of novel energy-conserving light source, and it has applied to the various occasions of relevant illumination, as car light, stage lighting, indoor lamp, street lamp etc., he she with respect to conventional light source, its long service life, electro-optical efficiency are high.But along with the more and more maturation of lighting engineering, its corresponding requirement is just more and more higher; Existing technological difficulties are to be difficult for keeping high light efficiency, optical uniformity and low cost again in the half light intensity angle satisfying the demands.

Summary of the invention

The present invention aims to provide a kind of LED light-distribution lens, can in the half light intensity angle satisfying the demands, keep high light efficiency, optical uniformity and low cost.

For achieving the above object, the present invention realizes by the following technical solutions:

LED light-distribution lens disclosed by the invention, comprises the plane of incidence and exit facet, and the center of the described plane of incidence is convex lens face, and the arranged outside of described convex lens face has annular tooth, and the protrusion direction of the crown of described annular tooth and convex lens face is identical and exceed the summit of convex lens face; The side of annular tooth is that different curve is spliced.

Preferably, described exit facet is light face or erosion line face or pearl face.

Further, described exit facet is provided with groove over against the position of convex lens face, and the bottom surface of described groove is circular, the pearl face that it is surperficial.

Preferably, described exit facet is anchor ring after removing groove part, and described anchor ring is light face or frosting or pearl face.

Further, the number of described annular tooth is greater than 1, more away from the crown of the annular tooth of convex lens face, exceeds the size on summit of convex lens face larger.

Preferably, the number of described annular tooth is 3.

LED light-distribution lens disclosed by the invention, in the half light intensity angle satisfying the demands, light extraction efficiency is high, good heat dissipation, lightweight, easily assembling.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is schematic perspective view of the present invention;

Fig. 3 is the schematic perspective view of exit facet of the present invention;

Fig. 4 is light distribution effect schematic diagram of the present invention;

In figure: 1-convex lens face, 2-annular tooth, 3-exit facet, 4-groove, 5-bottom surface, 6-side.

The specific embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is further elaborated.

As shown in Figure 1, Figure 2, Figure 3 shows, LED light-distribution lens disclosed by the invention, comprises the plane of incidence and exit facet 3, whole lens are horn-like, exit facet 3 is this trumpet-shaped large mouthful, and for adapting to different light distribution requirements, exit facet 3 can adopt light face or erosion line face or pearl face; The center of the plane of incidence is convex lens face 1, and during use, LED light source is arranged on the below of convex lens face 1; As a kind of optimal way: exit facet 3 is planar rondure, groove 4 is offered over against convex lens face 1 in the center of exit facet 3, and groove 4 is cylindrical, and the surface of its bottom surface 5 adopts pearl face, groove 4 anchor ring around adopts light face or frosting or pearl face, and one meets the different needs.

Arranged outside at convex lens face 1 has annular tooth 2, and annular tooth 2 is surrounded convex lens faces 1, and the protrusion direction of the crown of annular tooth 2 and convex lens face 1 is identical and exceed the summit of convex lens face 1; The side 6 of annular tooth 2 adopts different curve to be spliced, and can adopt from crown and upwards be divided into the annulus that a plurality of curvature is different, and the cross section of annular tooth 2 is triangular in shape or trapezoidal.Annular tooth 2 can have a plurality of, and its quantity is different depending on LED light-distribution lens size, more away from the crown of the annular tooth 2 of convex lens face 1, exceeds the size on summit of convex lens face 1 larger, to meet more away from LED light source, and the needs that the angle of light is larger.The quantity of the annular tooth 2 of the present embodiment is 3, between annular tooth 2, leave gap, approximately larger away from the gap between the annular tooth 2 of convex lens face 1, the lateral surface of outermost annular tooth 2 can apply reflectorized material, and the light that LED light source sends is all penetrated from the exit facet 3 of lens.

From the luminous intensity distribution schematic diagram of the present invention shown in Fig. 4, can find out, be positioned at the light that the LED light source of convex lens face 1 central lower sends, after the transmission of convex lens face 1 or the refraction of annular tooth 2, from exit facet 3, penetrate again, light distribution effect is good, in the half light intensity angle satisfying the demands, can keep high light efficiency, optical uniformity and low cost again.

Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims

1. a LED light-distribution lens, it is characterized in that: comprise the plane of incidence and exit facet (3), the center of the described plane of incidence is convex lens face (1), the arranged outside of described convex lens face (1) has annular tooth (2), and the protrusion direction of the crown of described annular tooth (2) and convex lens face (1) is identical and exceed the summit of convex lens face (1); The side (6) of annular tooth (2) is spliced for different curve.

2. LED light-distribution lens according to claim 1, is characterized in that: described exit facet (3) is light face or erosion line face or pearl face.

3. LED light-distribution lens according to claim 1, is characterized in that: described exit facet (3) is provided with groove (4) over against the position of convex lens face (1), and the bottom surface (5) of described groove (4) is circular, the pearl face that it is surperficial.

4. LED light-distribution lens according to claim 3, is characterized in that: described exit facet (3) is anchor ring after removing groove (4) part, and described anchor ring is light face or frosting or pearl face.

5. LED light-distribution lens according to claim 1, is characterized in that: the number of described annular tooth (2) is greater than 1, more away from the crown of the annular tooth (2) of convex lens face (1), exceeds the size on summit of convex lens face (1) larger.

6. LED light-distribution lens according to claim 5, is characterized in that: the number of described annular tooth (2) is 3.