CN209026743U

CN209026743U - A kind of non-spherical lens that square focus spot Uniform Illumination may be implemented

Info

Publication number: CN209026743U
Application number: CN201821326976.8U
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: 2019-06-25
Anticipated expiration: 2028-08-16

Abstract

The utility model discloses a kind of non-spherical lenses that square focus spot Uniform Illumination may be implemented, used in the front of LED chip, lens body bottom surface is greater than top, it is incidence surface to lens body bottom surface, its top is light-emitting surface, lens body bottom surface is greater than top, it is incidence surface to lens body bottom surface, its top is light-emitting surface, lens body is that bottom surface extends to both tops surface blending, the perpendicular any cross-sectional shape of the center line of lens body is the arc side and four straightways for respectively connecting adjacent two arc sides endpoint of four point symmetries, the recess of lens body bottom surface indented central dome shape, recess highest point is located on lens body center line, form the incidence surface for making the light incidence exported from LED chip, LED light passes through the aspherics lens of the utility model, hot spot is set to become square from circle Shape, and keep the illumination at middle part stronger；In addition, the illumination patterns of hot spot be also no longer it is mixed and disorderly, become reasonable linear distribution.

Description

A kind of non-spherical lens that square focus spot Uniform Illumination may be implemented

Technical field

The utility model belongs to LED lens technical field, and concretely relating to one kind, that square focus spot may be implemented is uniform The non-spherical lens of illumination.

Background technique

The light efficiency of large power white light LED has reached 100lm/w at present, and the light efficiency of stable product also has 90lm/w or more, This light efficiency makes it possible that LED enters general lighting, has especially belonged to the field of directional lighting in road lighting etc. It is gradually applied, still, since the price of current LED is more much higher than conventional light source, popularization of the LED for general lighting is necessary Premised on the whole light efficiency for improving LED illumination System, and this will be by the effective light utilization efficiency for improving LED light.

For current LED street lamp, LED tunnel lamp, when LED operation, generated light beam penetrated directionality before being, also It is little that there are illumination ranges, intensity of illumination defect unevenly distributed on road surface, to limit the road LED to a certain extent The popularization and application of lamp, LED tunnel lamp improve the uniformity of light shield to effectively control LED beam, improve luminous flux, this will Secondary light-distribution is carried out with it with secondary optics.Light cup, optical reflective disk etc is mostly used to tie greatly in terms of existing LED secondary light-distribution Structure improves the LED illumination uniformity with this, however existing such technical solution makes light beam cross over many times reflection or refraction, and light is logical Amount is influenced the illumination performance of LED by considerable degree of decaying.

In addition, also LED light is handled using optical lens at present, but existing optical lens design is back Body is revolved, generated hot spot is circular light spot, is not able to satisfy the needs of the rectangular or square hot spot of single pixel point, and illumination Effect is undesirable.

Summary of the invention

The purpose of the utility model is to provide a kind of non-spherical lenses that square focus spot Uniform Illumination may be implemented, and are intended to Solve problems of the prior art.

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

A kind of non-spherical lens that square focus spot Uniform Illumination may be implemented, used in the front of LED chip, feature exists In: it include: lens body, it is incidence surface to the lens body bottom surface that the lens body bottom surface, which is greater than top, and top is Light-emitting surface, the lens body are that bottom surface extends to both tops surface blending, and the center line of the lens body mutually hangs down Straight any cross-sectional shape is the arc side and four straight lines for respectively connecting adjacent two arc sides endpoint of four point symmetries Section, the recess of the lens body bottom surface indented central dome shape, described its highest point of recess are located on lens body center line, Form the incidence surface for making the light incidence exported from LED chip.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body material is optics modeling Material, optical plastic good in optical property are easy to large batch of, the industrialized manufacturing, and production cost is low.

Preferred embodiment on the basis of above scheme and as above scheme: the lens body, which plays, to form square light Spot effect.

Preferred embodiment on the basis of above scheme and as above scheme: the LED chip includes visible light, infrared Light, ultraviolet light, while including monochromatic light, complex light, it can not only correspond to single led use, and this with single lens thoroughly in this way Lens can be corresponded to multiple LED with single lens and be used, to realize other colour switchings such as RGB.

Compared with the prior art, the utility model has prominent and beneficial technical effects that: LED light is by the utility model Aspherics lens make hot spot become rectangle from circle, and keep the illumination at middle part stronger；In addition, the illumination patterns of hot spot Also be no longer it is mixed and disorderly, become reasonable linear distribution.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the main view of the utility model；

Fig. 3 is the top view of the utility model；

Fig. 4 is AA cross-sectional view；

Fig. 5 is BB cross-sectional view；

Fig. 6 is lens component construction line schematic diagram；

Fig. 7 is light schematic diagram；

Fig. 8 is illumination spot figure.

Specific embodiment

To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the attached drawing 1-7 in embodiment, Technical solution in embodiment is clearly and completely described,

A kind of non-spherical lens that square focus spot Uniform Illumination may be implemented, used in the front of LED chip 10, comprising: thoroughly Mirror main body 20, the perpendicular any cross-sectional shape of the center line of the lens body 20 are first arc side of four point symmetries 241, the second arc side 242, third arc side 243, the 4th arc side 244 and four articles are respectively by the first of the connection of adjacent two arc sides endpoint Straightway 251, second straight line section 252, third straightway 253, the 4th straightway 254,20 bottom surface 23 of lens body are greater than Top 22, is incidence surface to the lens body bottom surface 23, and top is light-emitting surface, 20 bottom surface indented central spherical surface of lens body The recess 21 of shape, 21 highest points of the recess are located on lens body center line 24, form the light for making to export from LED chip 10 Incident incidence surface.

20 material of lens body is optical plastic.

The lens body 20 plays the role of forming square focus spot.

The LED chip 10 includes visible light, infrared light, ultraviolet light, while including monochromatic light, complex light.

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 non-spherical lens that square focus spot Uniform Illumination may be implemented, used in the front of LED chip, it is characterised in that: It include: lens body, the lens body bottom surface is greater than top, and the lens body bottom surface is incidence surface, and top is light out Face, the lens body are that bottom surface extends to both tops surface blending, and the center line of the lens body is perpendicular Any cross-sectional shape is the arc side and four straightways for respectively connecting adjacent two arc sides endpoint of four point symmetries, institute The recess of lens body bottom surface indented central dome shape is stated, described its highest point of recess is located on lens body center line, is formed Make the incidence surface of the light incidence exported from LED chip.

2. a kind of non-spherical lens that square focus spot Uniform Illumination may be implemented according to claim 1, it is characterised in that: The lens body material is optical plastic.

3. a kind of non-spherical lens that square focus spot Uniform Illumination may be implemented according to claim 1, it is characterised in that: The lens body plays the role of forming square focus spot.

4. a kind of non-spherical lens that square focus spot Uniform Illumination may be implemented according to claim 1, it is characterised in that: The LED chip includes visible or infrared light or ultraviolet light, while including monochromatic light or complex light.