CN204853333U

CN204853333U - Polarisation formula lens that LED street lamp was used

Info

Publication number: CN204853333U
Application number: CN201520574694.XU
Authority: CN
Inventors: 温慧玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-31
Filing date: 2015-07-31
Publication date: 2015-12-09
Anticipated expiration: 2025-07-31

Abstract

The utility model discloses a polarisation formula lens that LED street lamp was used, including plane shape installation bottom surface and upper surface be equipped with confession LED on the installation bottom surface and install the pit in it, and install in the LED of pit, its optical axis perpendicular to bottom surface, the internal surface of this pit forms the incident surface, and the upper surface of lens forms the emitting face, its characterized in that, incident surface and emitting face have the one side at least for oval shape to one of them plane of perpendicular to bottom surface and process LED optical axis is the reference plane, lens are the ellipse, through the two halves ellipse that the LED optical axis was distinguished, and the eccentric distance of its two centres of a circle existence 1.24-3.8 center one side of reference plane is equipped with sunkenly. Scioptics come adjust light's light distribution, also make the illuminance of shining on the road surface more even, listen the shape of overregulating lens internal and external surface and the material of lens again, further satisfy the facula shape and shine the homogeneity requirement.

Description

A kind of polarizing lens of LED street lamp

Technical field

The utility model belongs to technical field of LED illumination, is specifically related to a kind of polarizing lens of LED street lamp.

Background technology

LED, as a kind of novel solid-state cold light source, compares with traditional light source and has a lot of advantage, and as energy-conservation, environmental protection, is easy to regulate, and the advantages such as the life-span is long, are therefore suitable as the light source of various lighting field, such as road lighting light source very much.

Roadway lighting system is different from general lighting, and the field of its illumination is preferably rectangular area, and to improve the utilization rate of light, the light sent due to LED light source is similar to youth uncle shape.Both light intensity became cosine distribution, be directly used in illumination, meeting forms a uneven round spot on road surface, and center is very bright, and very fast in radial decay, this just needs to design corresponding optical system and carrys out luminous intensity distribution again, the LED street lamp of current appearance, street lamp post is generally be placed on roadside, so street lamp in use has a large amount of illumination be mapped to region beyond road surface, be unfavorable for effective utilization of luminous energy

Summary of the invention

It is simple that the purpose of this utility model is to provide a kind of structure, easy to install, light can be made to effectively using regional dip, improve the utilization rate of light, make the polarizing lens being radiated at the LED street lamp that the hot spot on road corresponds to actual needs more, it solve the problems referred to above that prior art exists.

The technical scheme that the utility model adopts is, a kind of polarizing lens of LED street lamp, comprise planar shaped and bottom surface and upper surface are installed, described installation bottom surface is provided with for LED installation pit in the inner, and be installed on the LED of pit, its optical axis is perpendicular to bottom surface, the inner surface of this pit forms the plane of incidence, the upper surface of lens forms exit facet, the described plane of incidence and exit facet have at least one side to be elliptical shape, with perpendicular to bottom surface and through one of them plane of LED light axle for the plane of reference, described lens ovalize, through two semiellipses that LED light axle is distinguished, there is the eccentric throw of 1.24 ~ 3.8 in its two center of circle, depression is provided with in the side, center of the described plane of reference.

The polarizing lens of a kind of LED street lamp described in the utility model, after being installed on road, its hot spot is symmetric along road direction in its mounting points both sides, be mal-distribution along vertical road direction, irradiation distance required by using according to reality, regulate the regional location that neck glazing journey is relatively large, namely the irradiation distance of actual requirement is far away, the numerical value of this eccentricity of region is larger, this structure is just equivalent to the convex lens defining an off-axis, reach the object of Ray obliquity, scioptics carry out the light distribution of light regulating, also make the illumination that is radiated on road surface more even, listen again and overregulate the shape of lens surfaces externally and internally and the material of lens, meet light spot shape further and irradiate uniformity requirement.

Accompanying drawing explanation

Fig. 1 is the transverse sectional view of the polarizing lens of a kind of LED street lamp of the utility model;

Fig. 2 is the utility model longitudinal sectional view;

Fig. 3 is the utility model luminous intensity distribution plot;

Fig. 4 is the luminous intensity distribution plot of the utility model second embodiment.

In figure, 1. bottom surface, 2. upper surface, 3. pit, 4. inner surface, the 5. upper surface of lens, the 6. plane of reference are installed, 7. cave in.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.

The polarizing lens of a kind of LED street lamp described in the utility model, as Fig. 1, shown in 2, comprise planar shaped and bottom surface 1 and upper surface 2 are installed, described installation bottom surface 1 is provided with for LED installation pit 3 in the inner, and be installed on the LED of pit 3, its optical axis is perpendicular to bottom surface, the inner surface 4 of this pit forms the plane of incidence, the upper surface 5 of lens forms exit facet, the described plane of incidence and exit facet have at least one side to be elliptical shape, with perpendicular to bottom surface and through one of them plane of LED light axle for the plane of reference 6, described lens ovalize, through two semiellipses that LED light axle is distinguished, there is the eccentric throw of 1.24 ~ 3.8 in its two center of circle, depression 7 is provided with in the side, center of the described plane of reference.

Above-mentioned embodiment is an example of the present utility model; be not used to the enforcement and the interest field that limit utility model; all equivalences made according to the content described in the utility model patent protection scope change and modify, and all should be included in the utility model claim.

Claims

1. the polarizing lens of a LED street lamp, comprise planar shaped and bottom surface (1) and upper surface (2) are installed, described installation bottom surface (1) is provided with for LED installation pit (3) in the inner, and be installed on the LED of pit (3), its optical axis is perpendicular to bottom surface, the inner surface (4) of this pit forms the plane of incidence, the upper surface (5) of lens forms exit facet, it is characterized in that, the described plane of incidence and exit facet have at least one side to be elliptical shape, with perpendicular to bottom surface and through one of them plane of LED light axle for the plane of reference (6), described lens ovalize, through two semiellipses that LED light axle is distinguished, there is the eccentric throw of 1.24 ~ 3.8 in its two center of circle, depression (7) is provided with in the side, center of the described plane of reference.