CN208721820U

CN208721820U - A kind of optical lens of achievable large spot

Info

Publication number: CN208721820U
Application number: CN201821326860.4U
Authority: CN
Inventors: 徐日民
Original assignee: Zhejiang Color Prime Minister Lighting Technology Co Ltd
Current assignee: Zhejiang Caicheng Technology Co ltd
Priority date: 2018-08-16
Filing date: 2018-08-16
Publication date: 2019-04-09
Anticipated expiration: 2028-08-16

Abstract

The utility model discloses a kind of optical lens of achievable large spot, it is located in front of LED chip, including lens body, the lens body bottom surface is incidence surface, and upper part is light-emitting surface；The lens body forms radiation symmetric centered on central shaft, the bottom surface is burnishing surface, recessed sagging and its surrounding has continuous aspherical protrusion in the middle part of the lens body, makes to form at least one light-emitting surface, the light-emitting surface is made of the combination of the different multiple curve parts of radius of curvature；The lens body bottom extends downwardly out a bottom panel, and the thickness of the lens body is much smaller than its width, and the lens thickness is than relatively thin in this way, be conducive to the slim shape-designing of lamps and lanterns, with according to needs are applied, significantly, the light for effectively issuing LED is diffused；In addition, a variety of hot spot effects may be implemented by the surface structure for changing lens.

Description

A kind of optical lens of achievable large spot

Technical field

The utility model relates to optical lens technical fields, concretely relate to a kind of optical lens of achievable large spot Mirror.

Background technique

At this stage, LCD TV is divided into side entering type and two kinds of straight-down negative in the market, and Straight-down type liquid crystal television is with its object U.S. valence Honest and clean advantage is welcome by the majority of consumers deeply, but opposite side entering type liquid crystal module, and the lamp bar in directly-down liquid crystal mould group needs Install optical lens additional outside LED, the luminous energy for issuing LED is uniformly mixed, while making it have biggish hot spot, increases backlight Brightness and the uniformity.

In addition in illumination use process, it is often necessary to biggish irradiated area is provided, to meet the needs of illumination, then Just need the optical lens installed additional outside LED that it can be made to generate a big hot spot.

In the prior art, in order to expand the hot spot of LED, current optical lens is mostly two-sided curved-surface structure, such as lower surface (close to LED) is inner concave, and upper surface (far from LED) is convex surface, but the optical lens of this hyperboloid structure, precision are wanted Ask high, mold processing is more complicated, increases die sinking expense；Lens are not allowed to be easy to do thin simultaneously, are unfavorable for the slim moulding of lamps and lanterns Design.

Summary of the invention

The purpose of the utility model is to provide a kind of optical lens of achievable large spot, it is intended to solve in background technique There are the problem of.

In order to solve the above technical problems, purpose of the utility model is realized as follows:

A kind of optical lens of achievable large spot is located in front of LED chip, including lens body, the lens master Body bottom surface is incidence surface, and upper part is light-emitting surface；

The lens body forms radiation symmetric centered on central shaft, and the bottom surface is burnishing surface, the lens master It is recessed in the middle part of body to sink and its surrounding has continuous aspherical protrusion, make to be formed at least one light-emitting surface, the light-emitting surface by The combination of the different multiple curve parts of radius of curvature is constituted；

The lens body bottom extends downwardly out a bottom panel, and the thickness of the lens body is much smaller than its width, this The sample lens thickness is conducive to the slim shape-designing of lamps and lanterns than relatively thin.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body is with one with central axis For the ring-shaped non-spherical face protrusion of the heart, the discoid light-emitting surface of similar back-off is formed it into.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body is triangular pyramid, The recessed lower limit in vertex, three faces around vertex are aspheric, make it have three light-emitting surfaces.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body is tetrapyamid shape, The recessed lower limit in vertex, four faces around vertex are aspheric, make it have four light-emitting surfaces.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body is pentagonal pyramid shape, The recessed lower limit in vertex, five faces around vertex are aspheric, make it have five light-emitting surfaces.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body is hexagonal pyramid shape, The recessed lower limit in vertex, six faces around vertex are aspheric, make it have six light-emitting surfaces.

Compared with the prior art, the utility model has prominent and beneficial technical effects that:

1. only one free form surface, facilitates mold to process, processing cost is reduced.

2. lens compare relatively thin, be conducive to be combined into one with the dust cover of lamp lens, reduce lamps and lanterns cost

3. lens compare relatively thin, be conducive to the slim design of lamps and lanterns.

4. this lens can be according to needs be applied, significantly, the light for effectively issuing LED is diffused.

5. uniform hot spot may be implemented, light and shade changes sharp keen hot spot.

6. by change lens surface structure may be implemented a variety of hot spot effects (such as triangle hot spot, square focus spot, five Side shape, hexagon hot spot).

Detailed description of the invention

Fig. 1 is the overall structure diagram of disk-shaped lens；

Fig. 2 is the overall structure main view of disk-shaped lens；

Fig. 3 is the top view of disk-shaped lens；

Fig. 4 is disk-shaped lens AA cross-sectional view；

Fig. 5 is triangular pyramid lens overall structure diagram；

Fig. 6 is triangular pyramid lens overall structure main view；

Fig. 7 triangular pyramid lens top view；

Fig. 8 is triangular pyramid lens BB cross-sectional view；

Fig. 9 is tetrapyamid shape lens overall structure diagram；

Figure 10 is tetrapyamid shape lens overall structure main view；

Figure 11 is tetrapyamid shape lens top view；

Figure 12 is tetrapyamid shape lens CC cross-sectional view；

Figure 13 is pentagonal pyramid shape lens overall structure diagram；

Figure 14 is pentagonal pyramid shape lens overall structure main view；

Figure 15 is pentagonal pyramid shape lens top view；

Figure 16 is pentagonal pyramid shape lens DD cross-sectional view；

Figure 17 is hexagonal pyramid shape lens overall structure diagram；

Figure 18 is hexagonal pyramid shape lens overall structure main view；

Figure 19 is hexagonal pyramid shape lens overall structure rearview；

Figure 20 is hexagonal pyramid shape lens top view；

Figure 21 is hexagonal pyramid shape lens EE cross-sectional view；

Figure 22 is light schematic diagram；

Figure 23 is the illumination spot of no lens LED；

Figure 24 is the illumination spot of disk-shaped lens；

Figure 25 is the illumination spot of triangular pyramid lens；

Figure 26 is the illumination spot of tetrapyamid shape lens；

Figure 27 is the illumination spot of pentagonal pyramid lens；

Figure 28 is the illumination spot of hexagonal prisms lens.

Specific embodiment

To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the attached drawing in embodiment, to reality The technical solution applied in example is clearly and completely described,

A kind of optical lens of achievable large spot is located at 10 front of LED chip, including lens body 20, described Mirror main body extends downwardly out a bottom panel 24, and the bottom surface 23 of the lens body bottom panel 24 is incidence surface, lens body top For light-emitting surface；

Lens body 20 forms radiation symmetric centered on central shaft, and bottom surface 23 is burnishing surface, lens body middle part 22 It is recessed to sink and its surrounding has continuous aspherical protrusion, make to be formed at least one light-emitting surface 21, the light-emitting surface 21 is by song The combination of the different multiple curve parts of rate radius is constituted；

The thickness of lens body 20 is much smaller than its width, and the lens thickness in this way is conducive to the slim of lamps and lanterns and makes than relatively thin Type design.

See that Fig. 1-4, the lens body 20 have one using central axis as the ring-shaped non-spherical face of heart protrusion, form it into similar The discoid light-emitting surface of back-off, illumination spot are shown in Figure 24.

Preferably, see Fig. 5-8, the lens body is triangular pyramid, the recessed lower limit in vertex 32, around vertex 32 Three faces be aspheric, make it have three light-emitting surfaces 31, triangular pyramid bottom surface extends downwardly a bottom panel 34, bottom panel Bottom surface 33 is incidence surface, and illumination spot is shown in Figure 25.

Preferably, seeing Fig. 9-12, the lens body is tetrapyamid shape, the recessed lower limit in vertex 42, vertex 42 weeks Four faces 41 enclosed are aspheric, make it have four light-emitting surfaces, rectangular pyramid bottom surface extends downwardly a bottom panel 44, bottom panel Bottom surface 43 be incidence surface, illumination spot is shown in Figure 26.

Preferably, seeing Figure 13-16, the lens body is pentagonal pyramid shape, the recessed lower limit in vertex 52, vertex 52 weeks Five faces 51 enclosed are aspheric, make it have five light-emitting surfaces, pentagonal pyramid bottom surface extends downwardly a bottom panel 54, bottom panel 54 bottom surface 53 is incidence surface, and illumination spot is shown in Figure 27.

Preferably, seeing Figure 17-21, the lens body is hexagonal pyramid shape, the recessed lower limit in vertex 62, vertex 62 weeks Six faces 61 enclosed are aspheric, make it have six light-emitting surfaces, hexagonal pyramid bottom surface extends downwardly a bottom panel 64, bottom panel 64 bottom surface 63 is incidence surface, and illumination spot is shown in Figure 28.

It should be noted that in embodiment, triangular pyramid, tetrapyamid shape, pentagonal pyramid shape, hexagonal pyramid shaped lens body, Its vertex is all fallen on lens body center line；Specifically, here triangular pyramid, rectangular pyramid, pentagonal pyramid, hexagonal pyramid is positive The projection of pyramid, i.e. vertex in bottom surface is the center of bottom surface.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by the protection of the utility model Within the scope of.

Claims

1. a kind of optical lens of achievable large spot is located in front of LED chip, which is characterized in that including lens body, institute Stating lens body bottom surface is incidence surface, and upper part is light-emitting surface；

The lens body forms radiation symmetric centered on central shaft, and the bottom surface is burnishing surface, in the lens body Recessed sagging and its surrounding in portion has continuous aspherical protrusion, makes to form at least one light-emitting surface, the light-emitting surface is by curvature The combination of the different multiple curve parts of radius is constituted；

The thickness of the lens body is much smaller than its width.

2. a kind of optical lens of achievable large spot according to claim 1, it is characterised in that: the lens body tool Have one using central axis as the ring-shaped non-spherical face of heart protrusion, forms it into the discoid light-emitting surface of similar back-off.

3. a kind of optical lens of achievable large spot according to claim 1, it is characterised in that: the lens body is Triangular pyramid, the recessed lower limit in vertex, three faces around vertex are aspheric, make it have three light-emitting surfaces.

4. a kind of optical lens of achievable large spot according to claim 1, it is characterised in that: the lens body is Tetrapyamid shape, the recessed lower limit in vertex, four faces around vertex are aspheric, make it have four light-emitting surfaces.

5. a kind of optical lens of achievable large spot according to claim 1, it is characterised in that: the lens body is Pentagonal pyramid shape, the recessed lower limit in vertex, five faces around vertex are aspheric, make it have five light-emitting surfaces.

6. a kind of optical lens of achievable large spot according to claim 1, it is characterised in that: the lens body is Hexagonal pyramid shape, the recessed lower limit in vertex, six faces around vertex are aspheric, make it have six light-emitting surfaces.