CN205014279U

CN205014279U - LED lamps and lanterns fei nieer flys eye lens

Info

Publication number: CN205014279U
Application number: CN201520769458.3U
Authority: CN
Inventors: 易博
Original assignee: Chengdu Senshi Optical Technology Co Ltd
Current assignee: Chengdu Senshi Optical Technology Co Ltd
Priority date: 2015-10-08
Filing date: 2015-10-08
Publication date: 2016-02-03
Anticipated expiration: 2025-10-08

Abstract

The utility model discloses a LED lamps and lanterns fei nieer flys eye lens, it is the compound eye to be fei nieer face, emitting face including the incident surface, and the ring tooth of feinieer face comprises a refracting surface and a plurality of complete reflective surface, and the surface of compound eye is equipped with the netted boss of grid. The utility model discloses simple structure is inseparable, can be applied to high -power COB, many high -power chip paster LED or many well miniwatt chip paster LED, combines fresnel lens's spotlight effect and the mixed light colour mixture that combines the compound eye, realizes the grading plastic, and it is photochromic even to throw light on, and optical device thickness is thin, light in weight, and is with low costs.

Description

A kind of LED lamp Fresnel fly's-eye lens

Technical field

The utility model belongs to field of illuminating lamps, particularly relates to a kind of LED lamp Fresnel fly's-eye lens.

Background technology

LED is used widely in a lot of field as novel green durable energy saving life light source, particularly in the middle of lighting field, has started alternative conventional light source, and has become worse; LED chip in theory luminescence is 360 °, but in fact chip LED support is fixed and is encapsulated, so the maximum lighting angle of chip is 180 ° (be greater than 180 being positioned over.Scope also has a small amount of remaining light), chip also has some spurious rays in addition, just effectively can converge all light like this and can obtain as the different rising angles such as 180 °, 150 °, 120 °, 90 °, 60 ° by lens.Existing LED lamp adopts lens or reflector to carry out shaping to light usually, for the LED lamp adopting reflector to carry out light shaping, reflecting surface needs to do vacuum plating process, cost is higher and hot spot uniformity is poor, for the LED lamp adopting lens to carry out light shaping, lens material is more, and the production cycle is long, material cost and production cost higher.A lot of light fixture is due to the restriction of physical dimension, and the distance of optics is high than very large, causes conventional lens and reflector to be difficult to reach objective optics performance requirement.Adopt Fresnel Lenses to solve apart from high than problem, but Fresnel Lenses can cause the problem of hot spot and photochromic lack of homogeneity.

Utility model content

The utility model aims to provide a kind of LED lamp Fresnel fly's-eye lens, its mixed light colour mixture in conjunction with compound eye and the optically focused effect of Fresnel Lenses, realizes luminous intensity distribution shaping, photochromic even, low cost.

The technical solution of the utility model is a kind of LED lamp Fresnel fly's-eye lens, comprise that the plane of incidence is Fresnel surface, exit facet is compound eye, the back side that Fresnel surface is relative is compound eye, the ring tooth of described Fresnel surface is made up of a plane of refraction and multiple fully reflecting surface, and the surface of described compound eye is provided with the netted boss of grid.

Preferably, the netted boss face of grid on described compound eye surface is the convex surface of arc-shaped surface or other arc.

Preferably, the netted boss of grid on described compound eye surface is four limit rhombogen array or hexagon volume arrays.

Preferably, the netted mesa array of grid on described compound eye surface is arc surfaced or plane.

The utility model Fresnel fly's-eye lens is arranged on the top of LED light source, and Fresnel surface is the plane of incidence, and compound eye is exiting surface.Coupling LED light source can be used in the combination of high-power COB, high-power chip paster LED and middle low power chip paster LED, the ring tooth of Fresnel surface has optically focused effect and floodlight effect, compound eye has the effect of mixed light colour mixture, perfectly can solve the problem of traditional photochromic lack of homogeneity of Fresnel Lenses hot spot.

The utility model structure is simply tight, optically focused, luminous intensity distribution process are carried out to the light that LED light source sends, reduce optical lens cost, comprise material cost and production cost, thickness is thin, lightweight, illuminant color uniformity is good, be applicable to the combination of high-power COB, high-power chip paster LED and middle low power chip paster LED, meet the demand of different light distribution effect, save production cost.

Accompanying drawing explanation

Fig. 1 is the utility model topology view;

Fig. 2 is that COB light source light divides schematic diagram;

Fig. 3 is the Fresnel surface structural representation of Fresnel fly's-eye lens;

Fig. 4 is the compound eye schematic diagram of Fresnel fly's-eye lens;

Fig. 5 is Fresnel fly's-eye lens simulation illumination schematic diagram;

Fig. 6 is Fresnel fly's-eye lens analog ligand light curve schematic diagram;

Fig. 7 is Fresnel fly's-eye lens structural profile schematic diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further details.

As shown in Figure 1, the utility model discloses a kind of LED lamp Fresnel fly's-eye lens, its mixed light colour mixture in conjunction with compound eye and the optically focused effect of Fresnel Lenses, realize luminous intensity distribution shaping.Comprise that the plane of incidence is Fresnel surface 1, exit facet is compound eye 2, the back side that Fresnel surface is relative is compound eye.The ring tooth of Fresnel surface is made up of a plane of refraction 3 and multiple fully reflecting surface 4 as shown in Figure 3; The surface of compound eye 2 is provided with the netted boss of grid.

Step 1, the light that division COB light source sends as shown in Figure 2 are 2 parts, and accounting is 10% and 80% respectively;

Step 2, utilize the theoretical Fresnel surface setting up Fresnel fly's-eye lens at 3D software in light source sideline as shown in Figure 3, the plane in compound eye face substitutes, the light that COB light source sends 10% reflects to lens, the light of residue 80% is totally reflected to lens, and target call realizes the lighting angle of 18 °;

The Fresnel surface of step 3, the Fresnel fly's-eye lens imported in optical software in COB light source light file and step 2 carries out optical analog light path, if light path effect does not reach target call, Fresnel surface then in Optimization Steps 2, if simulation meets the requirements, then exports Fresnel surface;

Step 4, to set up the compound eye of Fresnel fly's-eye lens at 3D software as Fig. 4, namely set up hexagon mesa array at flat board; Light is refracted to target face through compound eye again by Fresnel surface optically focused, realizes the lighting angle of 24 ° and photochromic Uniform Illumination;

Step 5, Fresnel fly's-eye lens model in optical software steps for importing 4, optical analog checking is carried out in conjunction with collector lens, analyze illumination Fig. 5 and distribution curve flux Fig. 6, if simulate effect does not reach requirement, then Optimization Steps 4 fly's-eye lens, if simulation meets the requirements, then export Fresnel fly's-eye lens.

Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain of the claim that should belong to appended by the utility model.

Claims

1. a LED lamp Fresnel fly's-eye lens, is characterized in that: comprise that the plane of incidence is Fresnel surface (1), exit facet is compound eye (2), and the back side that Fresnel surface is relative is compound eye.

2. according to the LED lamp Fresnel fly's-eye lens described in claim 1, it is characterized in that: the ring tooth of described Fresnel surface is made up of (4) a plane of refraction (3) and multiple fully reflecting surface.

3. according to the LED lamp Fresnel fly's-eye lens described in claim 1, it is characterized in that: the surface of described compound eye (2) is provided with the netted boss of grid.

4. according to the LED lamp Fresnel fly's-eye lens described in claim 3, it is characterized in that: the netted boss face of grid on described compound eye (2) surface is the convex surface of arc-shaped surface or other arc.

5. according to the LED lamp Fresnel fly's-eye lens described in claim 3, it is characterized in that: the netted boss of grid on described compound eye (2) surface is four limit rhombogen array or hexagon volume arrays.

6. according to the LED lamp Fresnel fly's-eye lens described in claim 5, it is characterized in that: the netted mesa array of grid on described compound eye (2) surface is arc surfaced or plane.