CN202852686U

CN202852686U - Light-emitting diode (LED) lens

Info

Publication number: CN202852686U
Application number: CN2012205063357U
Authority: CN
Inventors: 邝志雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-04-03
Anticipated expiration: 2022-09-29

Abstract

The utility model discloses a light-emitting diode (LED) lens, and belongs to the field of lamps. The light transmittance of an LED lens made from milky-white poly carbonate (PC) is low. The light spots of an LED lens made of sand-blasted glass are uneven. As to an LED lens made of transparent glass, when people directly stare an illuminant, visual dazzling and other defects are easy to occur. The LED lens comprises a lens body which comprises a light inlet surface and a light outlet surface. A plurality of polyhedrons are arranged on the light inlet surface of the lens body and are connected with each other and bestrew the light inlet surface of the lens body, and the light inlet surface of the lens body is a concave surface or a plane surface. The LED lens is designed according to the principle of secondary optical refraction, adopts the transparent polyhedron structure, and enables the rays of the illuminant to be refracted from different angles to give out light. The LED lens has the advantages of being high in light transmittance, even in light spots, gentle in transition of light intensity, large in illuminating area of lights, and comfortable in visual, and not only suitable for roadway illumination, but also capable of being combined into LED lamps of various types, and therefore various illumination requirements of users can be met.

Description

The LED lens

Technical field

The utility model relates to field of illumination lamp technology, particularly relates to a kind of LED lens.

Background technology

Many weeks, LED has the plurality of advantages such as light efficiency is high, life-span length, safety, energy-saving and environmental protection as the new generation of green lighting source, and application is more and more extensive, such as indoor and outdoor lighting, backlight, medical treatment, traffic, plant growth etc.The LED of prior art is that single face is luminous, and lighting angle is less, can't realize stereo luminous (namely can't realize to all directions all luminous), and the brightness in the certain angle scope of its light-emitting zone is higher, and lower in neighboring area brightness, dazzle is more serious, can't satisfy the requirement of illumination.In the practical structures of LED light fixture, people often need to install LED lens again in order to obtain suitable distribution of light and illumination brightness in the LED light fixture.And the LED lens of prior art exist shortcomings such as light transmittance is low, hot spot is inhomogeneous, the light intensity transition is not soft.The material that the LED lens of manufacturing prior art are selected is milky white PC, sand blasting glass, clear glass etc.Its light transmittance of LED lens made from milky white PC is low.Inhomogeneous with its hot spot of LED lens that sand blasting glass is made.LED lens with clear glass is made easily produce the defectives such as vision, dazzle when the direct visual illuminator of people.In the LED of prior art lens, its lens generally adopt glass or highly hard transparent resins material to make, and the incidence surface of lens and exiting surface be generally smooth flat or smooth surface, and they are all undesirable to rising angle and the hot spot uniformity of LED.Along with society constantly develops, the LED light fixture is also constantly updating, and people are having higher requirement aspect its structure and the quality to the LED lens.Therefore, people wish that urgently a kind of LED lens come out.

Summary of the invention

Technical problem to be solved in the utility model is: there is the defective that light transmittance is low, hot spot is inhomogeneous, the light intensity transition is not soft in the LED lens that overcome prior art, a kind of LED lens are provided, this LED lens in use, its light transmittance is high, hot spot is even, and the light intensity transition is soft, and the light shadow surface enlarges, the LED light fixture that this LED lens are installed is fit to illumination very much, and people feel euphorosia to it.

The technical scheme that its technical problem that solves the utility model adopts is: the LED lens, comprise lens body, and described lens body comprises incidence surface and exiting surface, is provided with a plurality of polyhedrons at the incidence surface of lens body.

In technique scheme, described a plurality of polyhedrons interconnect, and are covered with the incidence surface of lens body.

Preferably, the incidence surface of described lens body is concave surface.

As another kind of embodiment of the present utility model, the incidence surface of described lens body is the plane.

Further, be provided with back-up block at the edge of described lens body, back-up block is near the incidence surface of described lens body.

Further, described back-up block has a plurality of, and a plurality of back-up blocks are evenly distributed on the edge of lens body.

Further, described lens body and a plurality of polyhedron are one-body molded.

The beneficial effects of the utility model are: 1, owing to the incidence surface in lens body is provided with a plurality of polyhedrons, so that the area of incidence surface increases greatly, thereby so that the utility model light transmittance is high, hot spot is even, the light intensity transition is soft, the light shadow surface enlarges, and the LED light fixture that this LED lens are installed is fit to illumination very much, and people feel euphorosia to it.2, the utility model can be combined into other accessory the LED light fixture of various styles, satisfies the client to the various requirement of LED light fixture.3, owing to being provided with a plurality of polyhedrons at the incidence surface of lens body, so its hot spot edge transition is soft, without veiling glare, without unusual coloured light.4, the utility model adopts transparent polyhedral structure according to the design of secondary optics refraction principle, makes the light of illuminator reflect from different perspectives luminous.5, the utility model is simple in structure, and is reasonable in design, practical.

Description of drawings

Fig. 1 is the perspective view of first embodiment of the utility model;

Fig. 2 is the front view of first embodiment of the utility model;

Fig. 3 is the perspective view of second embodiment of the utility model;

Fig. 4 is the top view of second embodiment of the utility model;

Description of reference numerals among Fig. 1 to Fig. 4: 1---lens body; 2---incidence surface; 3---exiting surface; 4---polyhedron; 5---back-up block.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model being described in further detail, is not that practical range of the present utility model is confined to this.

Embodiment one, and as depicted in figs. 1 and 2, the described a kind of LED lens of the present embodiment comprise lens body 1, and described lens body 1 comprises incidence surface 2 and exiting surface 3, is provided with a plurality of polyhedrons 4 at the incidence surface 2 of lens body 1.Described a plurality of polyhedron 4 interconnects, and is covered with the incidence surface 2 of lens body 1.The incidence surface 2 of described lens body 1 is concave surface.Be provided with back-up block 5 at the edge of described lens body 1, back-up block 5 is near the incidence surface 2 of described lens body 1, described back-up block 5 has four, and four back-up blocks 5 are evenly distributed on the edge of lens body 1, and the effect of back-up block 5 is to play a supportive role during mounted lens body 1 in the LED light fixture.Described lens body 1 and a plurality of polyhedron 4 are one-body molded.Because the incidence surface 2 in lens body 1 is provided with a plurality of polyhedrons 4, so that the area of incidence surface 2 increases greatly, thereby so that the utility model light transmittance is high, hot spot is even, the light intensity transition is soft, the light shadow surface enlarges, and the LED light fixture that this LED lens are installed is fit to illumination very much, and people feel euphorosia to it.

Embodiment two, and as shown in Figure 3 and Figure 4, the described a kind of LED lens of the present embodiment comprise lens body 1, and described lens body 1 comprises incidence surface 2 and exiting surface, are provided with a plurality of polyhedrons 4 at the incidence surface 2 of lens body 1.Described a plurality of polyhedron 4 interconnects, and is covered with the incidence surface 2 of lens body 1.The incidence surface 2 of described lens body 1 is the plane.Be provided with back-up block 5 at the edge of described lens body 1, back-up block 5 is near the incidence surface 2 of described lens body 1, described back-up block 5 has four, and four back-up blocks 5 are evenly distributed on the edge of lens body 1, and the effect of back-up block 5 is to play a supportive role during mounted lens body 1 in the LED light fixture.Described lens body 1 and a plurality of polyhedron 4 are one-body molded.Because the incidence surface 2 in lens body 1 is provided with a plurality of polyhedrons 4, so that the area of incidence surface 2 increases greatly, thereby so that the utility model light transmittance is high, hot spot is even, the light intensity transition is soft, the light shadow surface enlarges, and the LED light fixture that this LED lens are installed is fit to illumination very much, and people feel euphorosia to it.

The above only is two preferred embodiments of the present utility model, therefore all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, all is included in the protection domain of the utility model patent application.

Claims

1.LED lens comprise lens body (1), described lens body (1) comprises incidence surface (2) and exiting surface (3), it is characterized in that: the incidence surface (2) in lens body (1) is provided with a plurality of polyhedrons (4).

2. LED lens according to claim 1, it is characterized in that: described a plurality of polyhedrons (4) interconnect, and are covered with the incidence surface (2) of lens body (1).

3. LED lens according to claim 1 and 2, it is characterized in that: the incidence surface (2) of described lens body (1) is concave surface.

4. LED lens according to claim 1 and 2, it is characterized in that: the incidence surface (2) of described lens body (1) is the plane.

5. LED lens according to claim 1 is characterized in that: be provided with back-up block (5) at the edge of described lens body (1).

6. LED lens according to claim 5, it is characterized in that: described back-up block (5) has a plurality of, and a plurality of back-up blocks (5) are evenly distributed on the edge of lens body (1).

7. LED lens according to claim 1, it is characterized in that: described lens body (1) and a plurality of polyhedron (4) are one-body molded.