CN202884798U

CN202884798U - Lens used for light-emitting diode (LED) lamp

Info

Publication number: CN202884798U
Application number: CN2012205735091U
Authority: CN
Inventors: 奚文胜
Original assignee: GAN BAIZHI
Current assignee: GAN BAIZHI
Priority date: 2012-11-03
Filing date: 2012-11-03
Publication date: 2013-04-17
Anticipated expiration: 2022-11-03

Abstract

A lens used for a light-emitting diode (LED) lamp comprises a lens body which is in the shape of a horn as a whole. A containing cavity used for containing an LED light source is arranged on the lower portion of the lens body, a transmission part is arranged in the lens body and is right opposite to the containing cavity, the light incidence surface of the transmission part sinks toward the containing cavity, and the light emergence surface of the transmission part protrudes toward the top of the lens body. The transmission part and the lens body are connected into a whole, the outer side face of the lens body is composed of a plurality of polygonal planes, and the reflection planes reflect light emitted by the LED light source to the light emergence surface of the transmission part. Due to the face that the structure that the outer side face of the lens body is composed of the plurality of the polygonal planes and the reflection planes totally reflect the light emitted by the LED light source to the light emergence surface of the transmission part is adopted, the light of the LED light source is well distributed for the second time, and thus the lens used for the LED lamp has the advantages of being even and free of dispersion and dazzling when emerging.

Description

The lens that are used for the LED lamp

Technical field

The utility model relates to a kind of lens for the LED lamp, especially be on the whole trumpet-shaped lens body a kind of comprising, be provided with for the cavity volume that installs led light source in the bottom of described lens body, in described lens body, be provided with its incidence surface to the cavity volume indent over against described cavity volume, and its exiting surface to lens body top evagination transmissive portions, described transmissive portions and lens body are connected as a single entity, the lens that are used for the LED lamp.

Background technology

LED be a kind of can be the semiconductor of luminous energy with electric energy conversion, LED has the characteristics of long, the high and low radiation of light efficiency of life-span and low-power consumption.Therefore, white light LEDs has been widely used in indoor and outdoor lighting.Its product also presents variation, such as the LED Lamp cup, and the LED bulb lamp, and the LED ceiling light etc.

Known from institute, the brightness of LED is that the lighting angle with LED has and must concern, less its brightness of the angle of LED is higher,, if directly use as illuminating lamp with the little LED of lighting angle, though can obtain preferably brightness, more dazzling; Therefore, for being that the LED product that indoor or outdoors is used to throw light on all needs to carry out secondary light-distribution; The quality of secondary light-distribution directly has influence on LED illuminating product quality.At present, designing a kind of lens of being used for LED lamp good with secondary light-distribution simple in structure, is the target that people pursue always.

Summary of the invention

In order to overcome the problems referred to above, the present invention provides a kind of not only simple in structure to society, and the effective lens that are used for the LED lamp of secondary light-distribution.

The technical solution of the utility model is: a kind of lens for the LED lamp are provided, comprise and be on the whole trumpet-shaped lens body, be provided with for the cavity volume that installs led light source in the bottom of described lens body, in described lens body, be provided with its incidence surface to the cavity volume indent over against described cavity volume, and its exiting surface to lens body top evagination transmissive portions, described transmissive portions and lens body are connected as a single entity, the lateral surface of described lens body is to be made of a plurality of polygon planes, and the light that described plane can be sent led light source is totally reflected on the exiting surface of transmissive portions.Because fully reflecting surface is to be made of a plurality of polygon planes, the different wave length that led light source is sent can not produce color separation when penetrating refraction, reflection and reflecting, and it is interlaced to project the different wave length of irradiation area after interior, without color distortion; Hot spot is even, no color differnece.

As to improvement of the present utility model, the described plane of reflection is fish scale-shaped polygon plane not of uniform size.

As to improvement of the present utility model, the surface is the pearl face directly over the described incidence surface.

As to improvement of the present utility model, described pearl face is to be made of the salient point (or concave point) that is evenly distributed on the incidence surface.

As to improvement of the present utility model, described salient point is segment or the projection take polygon the end of as.

As to improvement of the present utility model, described concave point is that the bottom surface is that circular concave point or bottom surface is polygonal concave point.

As to improvement of the present utility model, be provided with wire hole in the bottom of described lens body.

As to improvement of the present utility model, described lens body and transmissive portions are made with PMMA or PC.

The utility model is to be made of a plurality of polygon planes of reflection owing to having adopted the lateral surface of described lens body, the light that the described plane of reflection sends led light source is totally reflected to the structure on the exiting surface of transmissive portions from a plurality of directions and angle, like this, just the light of led light source carried out good secondary light-distribution, it is even to make it have a bright dipping, dazzle-free advantage.

Description of drawings

Fig. 1 is the cross-sectional view of a kind of embodiment of the present utility model.

Fig. 2 is the perspective view of Fig. 1.

Fig. 3 is the perspective view at another visual angle of Fig. 2.

Fig. 4 is the stereo decomposing structural representation of another kind of embodiment of the present utility model.

The specific embodiment

See also Fig. 1 to Fig. 3, what Fig. 1 to Fig. 3 disclosed is a kind of lens for the LED lamp, comprise and be on the whole trumpet-shaped lens body 1, be provided with for the cavity volume 11 that installs led light source in the bottom of described lens body 1, in described lens body 1, be provided with its incidence surface 21 to cavity volume 11 indents over against described cavity volume 11, and its exiting surface 22 to lens body top evagination transmissive portions 2, described transmissive portions 2 is connected as a single entity with lens body 1, the lateral surface 3 of described lens body 1 is to be made of a plurality of polygon planes of reflection 31, and the light reflection that the described plane of reflection 31 sends led light source is to the exiting surface 22 of transmissive portions 2.

In the present embodiment, the described plane of reflection 31 is the polygonal planes of reflection of fish scale-shaped.Described incidence surface 21 is pearl faces 211, and described pearl face 211 is to be made of the salient point that is evenly distributed on the incidence surface 21, and described salient point is that segment or the projection take polygon the end of as consist of.

In the present embodiment, be provided with wire hole 12 in the bottom of described lens body 1, be used for the positive and negative electrode of drawing LED.Described lens body 1 can be one-time formed with described transmissive portions 2, also can split.Can adopt same material to make during one-shot forming, as, described lens body 1 and transmissive portions 2 can be made with PMMA or PC.

See also Fig. 4, Fig. 4 is the stereo decomposing structural representation of another kind of embodiment of the present utility model.Embodiment illustrated in fig. 4 and embodiment illustrated in fig. 1 comparing, its general structure is identical, difference is the installation card 4 of also being furnished with on the bottom surface of lens body 1 for fixed L ED light source, card 4 is installed can have multiple different model selective, to adapt to the needs of fixing different big or small led light sources, installation card 4 among the figure is divided into little installation card 41 and the large 42 two kinds of different models of card of installing, when using, the user chooses as required one of them use, obviously, except the installation card 4 shown in Fig. 4, can also be according to client's needs, and design other different installation card.

Claims

1. lens that are used for the LED lamp, comprise and be on the whole trumpet-shaped lens body (1), be provided with for the cavity volume (11) that installs led light source in the bottom of described lens body (1), in described lens body (1), be provided with its incidence surface (21) to cavity volume (11) indent over against described cavity volume (11), and its exiting surface (22) to lens body top evagination transmissive portions (2), described transmissive portions (2) is connected as a single entity with lens body (1), it is characterized in that, the lateral surface (3) of described lens body (1) is to be made of a plurality of polygonal fully-reflected planes (31), and the light reflection that the described plane of reflection (31) sends led light source is to the exiting surface (22) of transmissive portions (2).

2. lens for the LED lamp according to claim 1, it is characterized in that: the described plane of reflection (31) is fish scale-shaped polygon fully-reflected plane.

3. lens for the LED lamp according to claim 1 and 2, it is characterized in that: described incidence surface (21) is the pearl face.

4. lens for the LED lamp according to claim 3 is characterized in that: described pearl face is to be made of the salient point or the concave point that are evenly distributed on the incidence surface (21).

5. lens for the LED lamp according to claim 4, it is characterized in that: described salient point is segment or the projection take polygon the end of as.

6. lens for the LED lamp according to claim 4 is characterized in that: described concave point is that the bottom surface is that circular concave point or bottom surface is polygonal concave point.

7. according to claim 1,2,4 or 5 described lens for the LED lamp, it is characterized in that: be provided with wire hole (12) in the bottom of described lens body (1).

8. the lens for the LED lamp according to claim 3 is characterized in that: be provided with wire hole (12) in the bottom of described lens body (1).

9. lens for the LED lamp according to claim 1 and 2 is characterized in that: described lens body (1) is one-time formed with described transmissive portions (2).

10. lens for the LED lamp according to claim 8, it is characterized in that: described lens body (1) and transmissive portions are made with PMMA or PC.