CN202757051U

CN202757051U - Side luminescence light emitting diode (LED) optical lens

Info

Publication number: CN202757051U
Application number: CN2012203994015U
Authority: CN
Inventors: 彭志奇
Original assignee: SHENZHEN UPLENS OPTOELECTRONICS CO Ltd
Current assignee: SHENZHEN UPLENS OPTOELECTRONICS CO Ltd
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2013-02-27
Anticipated expiration: 2022-08-13

Abstract

A side luminescence light emitting diode (LED) optical lens is integrally shaped like a cover, and is provided with an outer surface emitting light outwards and an inner surface with an LED chip. In the central portion of the inner surface of the LED lens is provided with an LED chip hole site depressed from the inner surface towards the outer surface, a plurality of small lenses are uniformly distributed on the rest portions of the inner surface except the LED chip hole site, the small lenses are distributed together tightly in attached mode to form a diffusion surface. the LED chip is arranged in the LED chip hole site, the LED chip hole site collects LED emitted light rays, and by means of an inner depressed hole in the outer surface of the LED lens in matched mode, refraction and reflection of the LED lens for the LED light rays are achieved, light distribution of the LED lens is changed, light spot surrounding strength is improved, light spot central strength is lowered, the small lenses uniformly distributed on the inner surface of the lens enable the lens to diffuse more LED light rays integrally, and therefore light spot uniformity after condensation is improved, dazzling glare is reduced, and overall light emitting effects are softened.

Description

The side-emitting LED lens

[technical field]

The utility model relates to the illuminating product field, relates in particular to LED and LED lens, and this scheme focuses on and proposed a kind of energy changes the luminous light distribution of LED by the LED lens LED lens.

[background technology]

The optics light distributing system that the LED lens are closely connected to and use with LED, LED lens and LED are used service efficiency and the luminous efficiency that can strengthen light, use different lens according to different effects, can be divided into lens and secondary lens by the application lens of classifying: lens are directly to encapsulate or be bonded on the led chip support, become as a whole with LED, the theoretical luminous of led chip is 360 °, but consider in fact that chip is placed on and fixed on the led support and encapsulation, so the maximum lighting angle of chip is 180 ° (a small amount of remaining light also being arranged greater than 180 ° of scopes); Secondary lens and LED are two independently objects, but they are inseparable when using again, the function of secondary lens is that the lighting angle with led light source pools arbitrarily angled between 5 ° to 160 ° again, and the distribution of light field mainly can be divided into: circular, oval, rectangle.

Conventional traditional LED lens are according to light distribution, define the full-shape angle with its 1/2 light intensity, generally be about 120 °, in some LED concentration applications, the light distribution of former LED need to be adjusted, it is low that adjustment reaches the center intensity of illumination, the strong effect of the peripheral intensity of illumination of hot spot, allow simultaneously the light of LED all be to concentrate in the optically focused angular range of wanting through all light behind the optically focused, reduce the spillover outside the optically focused angular range as far as possible.

[summary of the invention]

The utility model has proposed the reinforcement lateral emitting intensity that a kind of supporting little appearance and size light source uses for above problem, the side-emitting LED lens of reduction center intensity of illumination, these lens in use can change the LED light distribution, and will all concentrate in the optically focused angular range through all light behind the optically focused.

The technical solution of the utility model is: a kind of side-emitting LED lens, integral body presents the cover shape, has an external luminous outer surface and to the inner surface of led chip, it is characterized in that, inner surface core at the LED lens, be provided with a position, led chip hole of caving in from inner surface to outer surface, the remainder of removing position, led chip hole at inner surface is evenly equipped with some lenslets, described lenslet is close to densely covered being distributed in together, consists of the diffusing surface that the diffusion led chip emits beam.

Described lenslet is that bottom margin is regular hexagon, and the top is the interior concavees lens of arch, and every edge of each lens overlaps with the limit at other lenses edge, consists of the honeycomb type arrangement.

Described lenslet is that bottom margin is square, and the top is arch/foursquare interior concavees lens, and described lens are arranged according to matrix.

The bus of position, described led chip hole is parabola.

In position, corresponding inner surface led chip hole, face center, LED outside, be provided with a hole of caving in of caving in from outer surface to inner surface, the bus in the described hole of caving in is parabola.

The described hole of caving in is coaxial with the central axis of position, described led chip hole.

Have standing part in described LED lens bottom, described standing part is locating dowel, orients relative position between lens and the led chip and the distance between lens and the led chip.

Described side-emitting LED lens outer surface is triangle, quadrangle, pentagon, hexagon or circular surface.

The beneficial effects of the utility model are: led chip is arranged in the position, led chip hole, position, led chip hole is collected LED and is emitted beam, the hole of caving in of cooperated with LED lens outer surface, realize that the LED lens are to the catadioptric adjustment of LED light, so that producing, the light distribution of LED changes, allow the luminous intensity of hot spot intensity raising on every side, spot center weaken, and the uniform lenslet of inner lens surfaces is by the more LED light of the whole diffusion of lens, thereby so that the hot spot uniformity behind the optically focused is mentioned, reduce dazzling dazzle, soft Integral luminous effect.

[description of drawings]

Fig. 1 is the utility model one example structure schematic diagram;

Fig. 2 is lateral plan of the present utility model;

Fig. 3 is the square lens arrangement figure of the utility model triangle appearance;

Fig. 4 is the square lens arrangement figure of the utility model quadrangle appearance;

Fig. 5 is the square lens arrangement figure of the circular appearance of the utility model.

Wherein: 1, outer surface; 11, the hole of caving in; 2, inner surface; 21, position, led chip hole; 22, lenslet; 3, locating dowel.

[specific embodiment]

A kind of side-emitting LED lens, integral body presents the cover shape, has an external luminous outer surface 1 and to the inner surface 2 of led chip, it is characterized in that, at inner surface 2 cores of LED lens, be provided with one from inner surface 2 to outer surface 1 the depression position, led chip hole 21, the remainder of removing position, led chip hole 21 at inner surface 2 is evenly equipped with some lenslets 22, described lenslet 22 is close to densely covered being distributed in together, consists of the diffusing surface that the diffusion led chip emits beam.Described lenslet 22 be the bottom margin regular hexagon, the top is the interior concavees lens of arch, every edge of each lenslet overlaps with the limit at other lenslet edges, consist of the honeycomb type arrangement, lenslet can also be designed to bottom margin and be square, the top is arch/foursquare interior concavees lens, allow described lenslet matrix arrange, consisting of diffusing surface can allow the diffusion of LED lens go out more LED diffused raies, so that the hot spot uniformity behind the optically focused obviously improves, more evenly soft from lens light out, reduce the dazzling dazzle of LED.

The bus of position, described led chip hole 21 is parabola, namely this hole is to set up body opening shape with parabola around the axis rotary, on the other side, in position, corresponding inner surface led chip hole, face center, LED outside, be provided with a hole 11 of caving in of caving in from outer surface to inner surface, the bus in the described hole 11 of caving in is parabola, and the described hole 11 of caving in is coaxial with the central axis of position, described led chip hole 21.

21 effects of position, led chip hole are to allow better degree ground collect the light that led chip sends, reduce fiber-loss, increase luminous flux, and the effect in the hole 11 of caving in is to allow refraction and the reflection of LED lens on light line adjust, so that the light distribution of LED changes, so that the light intensity intensity around the hot spot improves, the light intensity remitted its fury of spot center, the cooperation of the hole two-part structure of caving in by position, led chip hole and lens outer surface, can realize that people's naked eyes can't see dazzling chip light emitting point from the positive direct view led light-source type of lens, and can only see the soft natural light-emitting zone of whole piece.

Have standing part in described side-emitting LED lens bottom, described standing part is locating dowel 3, orients relative position between lens and the led chip and the distance between lens and the led chip.

Described side-emitting LED lens outer surface is triangle, quadrangle, pentagon, hexagon or circular surface.In Fig. 3, when as seen lens outer surface is triangle, locating dowel is the triangle locating dowel, as among Fig. 4 when lens outer surface is quadrangle, locating dowel one has four, when if lens outer surface is arch, at least need the locating dowel more than 3 to be distributed on the bottom, play and support and fixing effect, in like manner can push away, the shape of described locating dowel and lens outer surface keeps consistency, and places and fixing effect to reach stable.

In the locating dowel of bottom design, when installing and using, can go deep in the wiring board fixing, also available ultrasonic technique melting locating dowel and it is adhered in the circuit board.

These type of side-emitting LED lens can use at advertising lamp box, colour TV screen backlight, and the lamp bar is in the LED lamp applications such as ornament lamp; These side-emitting LED lens adopt optics PMMA or optics PC material, adopt the lens die of making as requested with PUR Shooting Technique and processing, thereby guarantee the uniformity of product; Multi-point mould also can improve output and the efficient of production.

The beneficial effects of the utility model are: led chip is arranged in the position, led chip hole, position, led chip hole is collected LED and is emitted beam, the hole of caving in of cooperated with LED lens outer surface, realize that the LED lens are to the catadioptric adjustment of LED light, so that producing, the light distribution of LED changes, allow the luminous intensity of hot spot intensity raising on every side, spot center weaken, and the uniform arch matrix lenslet of inner lens surfaces is by the more LED light of the whole diffusion of lens, thereby so that the hot spot uniformity behind the optically focused is mentioned, reduce dazzling dazzle, soft Integral luminous effect.

The above, it only is the utility model preferred embodiment, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, refer to any simple modification that above embodiment is done according to the utility model technology, equivalent variations and modification all belong in the scope of technical solutions of the utility model.

Claims

1. side-emitting LED lens, integral body presents the cover shape, has an external luminous outer surface and to the inner surface of led chip, it is characterized in that, at the inner surface core of LED lens, be provided with a position, led chip hole of caving in from inner surface to outer surface, the remainder of removing position, led chip hole at inner surface is evenly equipped with some lenslets, described lenslet is close to densely covered being distributed in together, consists of the diffusing surface that the diffusion led chip emits beam.

2. described side-emitting LED lens according to claim 1 is characterized in that described lenslet is that bottom margin is regular hexagon, and the top is the interior concavees lens of arch, and every edge of each lens overlaps with the limit at other lenses edge, consist of the honeycomb type arrangement.

3. described side-emitting LED lens according to claim 1 is characterized in that, described lenslet is that bottom margin is square, and the top is arch/foursquare interior concavees lens, and described lens are arranged according to matrix.

4. described side-emitting LED lens according to claim 1 is characterized in that the bus of position, described led chip hole is parabola.

5. described side-emitting LED lens according to claim 1 is characterized in that, the position, corresponding inner surface led chip hole in LED outer surface center, be provided with one from outer surface to inner surface the hole of caving in of depression, the bus in the described hole of caving in is parabola.

6. described side-emitting LED lens according to claim 5 is characterized in that the described hole of caving in is coaxial with the central axis of position, described led chip hole.

7. arbitrary described side-emitting LED lens is characterized in that according to claim 1-4, have standing part in described LED lens bottom, and described standing part is locating dowel.

8. arbitrary described side-emitting LED lens according to claim 1-4, outer surface is triangle, quadrangle, pentagon, hexagon or circular surface.