CN101900295A

CN101900295A - High-power LED small angle-packaged lens structure

Info

Publication number: CN101900295A
Application number: CN 201010258623
Authority: CN
Inventors: 王海军
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-17
Filing date: 2010-08-17
Publication date: 2010-12-01

Abstract

The invention relates to a high-power LED small angle-packaged lens structure comprising a lens body. The lens body comprises a first end and a second end and a central area of the lens body is provided with light-transmitting holes distributed along the length direction of the lens body. As the light-transmitting holes are arranged in the lens body, strongest light rays emitted by an LED light source can perpendicularly irradiate so that the influence of the lens body on light energy is reduced, thereby the luminous flux is improved to the maximum; a first emergent light surface and a second emergent light surface are respectively formed in the lens body, and an emitting surface is formed on the outer wall of the lens body; after primary reflection, effective light rays are emitted to the emitting surface by reflecting the light rays and are mixed so that the uniformity of light spot is effectively improved; as the light-transmitting holes are distributed along the length direction of the lens body, air can get in and out the light-transmitting holes so that the fluidity of the air is improved, the heat radiation is quickened, and the service life of the lens body is prolonged; and by adopting the refraction characteristic of material bodies, the cost is reduced so that the lens body is more reliable and safe.

Description

The lens arrangement of high-power LED small angle encapsulation

Technical field

The present invention relates to a kind of lens arrangement, especially a kind of lens arrangement of high-power LED small angle encapsulation belongs to the technical field that LED throws light on.

Background technology

At present, more and more higher on the market to the requirement of the rising angle of LED and light extraction efficiency, particularly during the illumination in small angle range; Have shadow in the lens arrangement in the past, photochromic inhomogeneous, a lot of bad phenomenon such as light extraction efficiency is low have influenced the rising angle and the light extraction efficiency of LED illumination.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, a kind of high-power LED small angle encapsulating structure is provided, it is simple in structure, has improved the uniformity of luminous flux and hot spot, has prolonged the service life of lens, and is safe and reliable.

According to technical scheme provided by the invention, the lens arrangement of described high-power LED small angle encapsulation comprises lens body, and described lens body comprises first end and second end; The center of described lens body is provided with along the light hole of lens body distribution of lengths.

The tapered structure of described lens body.Described lens body forms first exiting surface corresponding to the bottom that the light hole inwall is set, and arc transition is passed through in the upper end of described first exiting surface and lens body inwall, and forms second exiting surface.Described lens body forms fully reflecting surface corresponding to the outer wall that first exiting surface and second exiting surface are set.Be provided with led light source in the light hole of described lens body corresponding to second end.Described lens body is provided with step corresponding to the end of first end.

Advantage of the present invention:

1, is provided with light hole in the lens body, makes the strongest light part that led light source sends can direct projection, thereby reduced the influence of lens body, improved luminous flux to greatest extent light energy;

2, form first exiting surface and second exiting surface in the lens body respectively, and form the surface of emission at the outer wall of lens body; Design by reflecting surface injects to outgoing plane by reflection ray with effective sunlight after primary event, and mixed light, effectively raises the uniformity of hot spot;

3, light hole is along the distribution of lengths of lens body, and air can pass in and out in light hole, has improved the flowability of air from face, has quickened heat radiation, has improved the service life of the body of lens LED.

4, in the center of lens body light hole is set, makes photochromic distribution more uniformly, eliminated the blackspot in the hot spot;

5, adopt the material body refraction characteristic, reduced cost, make the serviceability of lens body more reliable and secure.

Description of drawings

Fig. 1 is that the A-A of Fig. 2 is to view.

Fig. 2 is a structural representation of the present invention.

The specific embodiment

The invention will be further described below in conjunction with concrete drawings and Examples.

As Fig. 1～shown in Figure 2: the present invention includes lens body 1, light hole 2, second exiting surface 3, step 4, first exiting surface 5, reflecting surface 6, first end 7 and second end 8.

As depicted in figs. 1 and 2: described lens body 1 tapered structure, lens body 1 comprises first end 7 and second end 8.Be provided with in the center of lens body 1 along the light hole 2 of lens body 1 distribution of lengths, the two ends of described light hole 2 form led light source installing hole and led light source light hole respectively; Described led light source mounting hole site is in second end 8 of lens body 1, and the led light source light hole is positioned at first end 7 of lens body 1.Led light source is placed in the led light source installing hole of lens body 1, and the light of led light source is most of directly to be penetrated by light hole 2, has avoided the absorption of 1 pair of light of lens body, has improved the luminous flux of lens body 1.

Lens body 1 forms exiting surface corresponding to the inwall that light hole 2 is set, and described exiting surface comprises first exiting surface 5 and second exiting surface 3; Described first exiting surface 5 is positioned at second end, 8, the first exiting surfaces 5 of lens body 1 and 7 at first end of lens body 1 adopts the annulus transition, thereby forms second exiting surface 3; The bore of described second exiting surface 3 is greater than the bore of first exiting surface 5, guarantee that led light source passes light hole 2 after, have bigger swept area.First end 7 of lens body 1 is provided with step 4, the outer wall of lens body 1 forms reflecting surface 6, the light of first exiting surface 5 and second exiting surface 3 can be carried out total reflection, has effectively solved the problem that light that led light source sends is absorbed by material.

As depicted in figs. 1 and 2: during use, led light source is placed in the light hole 2 of second end 8 of lens body 1, after led light source powers on, can emits beam.The light major part of led light source can be passed light hole 2 backs and be penetrated; First exiting surface 5, second exiting surface 3 and fully reflecting surface 6 can be regulated the angle of sending of led light source.The fully reflecting surface 6 of lens body 1 outer wall can reflect light, has improved the brightness of light and the uniformity of hot spot.

Be provided with light hole 2 in the lens body 1 of the present invention, make the strongest light part that led light source sends can direct projection, thereby reduced the influence of 1 pair of light energy of lens body, improved luminous flux to greatest extent; Form first exiting surface 5 and second exiting surface 3 in the lens body 1 respectively, and form the surface of emission 6 at the outer wall of lens body 1; Design by reflecting surface 6 injects to outgoing plane by reflection ray with effective sunlight after primary event, and mixed light, effectively raises the uniformity of hot spot; Light hole 2 is along the distribution of lengths of lens body 1, and air can be from turnover in the light hole 2, improved the flowability of air from face, quickened heat radiation, improved the service life of lens body 1; Adopt the material body refraction characteristic, reduced cost, make lens body more reliable and secure.

Claims

1. the lens arrangement of a high-power LED small angle encapsulation comprises lens body (1), and described lens body (1) comprises first end (7) and second end (8); It is characterized in that: the center of described lens body (1) is provided with along the light hole (2) of lens body (1) distribution of lengths.

2. the lens arrangement of high-power LED small angle encapsulation according to claim 1 is characterized in that: the tapered structure of described lens body (1).

3. the lens arrangement of high-power LED small angle encapsulation according to claim 1, it is characterized in that: described lens body (1) forms first exiting surface (5) corresponding to the bottom that light hole (2) inwall is set, described first exiting surface (5) passes through arc transition with the upper end of lens body (1) inwall, and forms second exiting surface (3).

4. the lens arrangement of high-power LED small angle encapsulation according to claim 3 is characterized in that: described lens body (1) forms fully reflecting surface (6) corresponding to the outer wall that first exiting surface (5) and second exiting surface (3) are set.

5. the lens arrangement of high-power LED small angle encapsulation according to claim 1 is characterized in that: be provided with led light source in the light hole (2) of described lens body (1) corresponding to second end (8).

6. the lens arrangement of high-power LED small angle encapsulation according to claim 1, it is characterized in that: described lens body (1) is provided with step (4) corresponding to the end of first end (7).