CN201866704U

CN201866704U - Asymmetirc wide angle lens

Info

Publication number: CN201866704U
Application number: CN2010206150461U
Authority: CN
Inventors: 张卫东
Original assignee: SHANGHAI BAIYI LIGHTING ELECTRONIC CO Ltd
Current assignee: SHANGHAI BAIYI LIGHTING ELECTRONIC CO Ltd
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2011-06-15
Anticipated expiration: 2020-11-19

Abstract

The utility model relates to a light source accessory, in particular to an asymmetirc wide angle lens. The asymmetirc wide angle lens comprises a lens body that is provided with at least one raised lampshade that is made from transparent material with refractive index more than or equal to 4.54, and the side wall of the lampshade is vertical to the lens body. when a light source gives out light in the lampshade, according to refraction law, the refraction angle of light penetrating through the side wall of the lampshade is less than or equal to 20 degrees while the emission angle is more than 160 degrees, thus ensuring that the range of illumination can reach 160 degrees or more when light is irradiates on the side wall. Due to a large refraction rate, the light irradiated on top of the lampshade can be distributed uniformly after refraction, while the light at the side can also be relatively uniformly distributed in the irradiation area after refraction. The asymmetirc wide angle lens is rather uniform in illumination and also low in cost, and obtains such effects by only changing the refraction rate of the lampshade and the angle of the lampshade and the lens body.

Description

Asymmetric wide-angle lens

Technical field

The utility model relates to a kind of light source accessory, especially a kind of asymmetric wide-angle lens.

Background technology

The lampshade of road in the market and tunnel light fixture all is transparent; mainly play the effect of protection light fixture; and the Lights section also all adopts common bulb; because the effect of Transparent lamp shade is only limited to the protection light fixture; therefore under the situation of light source luminescent; light source sees through the lampshade direct projection and goes out; does not concentrate the light area; lose a lot of light, so in main light area, the intensity of illumination skewness; therefore some places light is very bright; some places light is more dim, and will strengthen the intensity of main light area, the method for quantity that can only be by increasing lamp; such mode has improved use cost again; but also can't accomplish the effect of uniform irradiation, and never have at present a kind of can head it off, the method that cost is lower.

The utility model content

The utility model provides the asymmetric wide-angle lens that a kind of illumination is even, cost is low.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of asymmetric wide-angle lens, comprise lens body, it is characterized in that on lens body, being provided with at least the lampshade of a protuberance, lampshade is made more than or equal to 4.54 transparent material by refractive index, and the sidewall of lampshade is vertical with lens body.

This is arranged on the body of lens and is provided with transparent lampshade, the refractive index of lampshade material is greater than and equals 4.54, and sidewall is vertical with lens body, when light source luminous in lampshade, according to the law of refraction, see through the refraction angle of lampshade sidewall light can be smaller or equal to 20 degree luminous angle in meeting greater than 160 degree, when so just guaranteeing that illumination is on sidewall, the scope of illumination can reach more than 160 degree, because refractive index is very big, the light that is radiated at the lampshade top can evenly distribute, and the light of side is after refraction after refraction, also be relatively to be evenly distributed in the irradiated region, illumination is very even, and cost is very low, and the refractive index that just changes lampshade has just obtained such effect with the angle that has changed lampshade and lens body.

Of the present utility modelly further be set to: the global shape of lampshade is " ω " type, and the top of lampshade evenly tilts to two arcs side.

This shape set that is provided with lampshade is " ω " type, the top of lampshade evenly tilts to two arcs side, the even inclination here is meant that even angle tilts, such structure, when loading onto the LED lamp, because the relation of position, LED is arranged on directly over the higher lampshade of aspect ratio, angle difference with equal illumination, incidence angle in incident light that makes light source on the inclined surface of lampshade and plane of refraction formation can be in a comparison range, so just improved the guidance quality of all light, the scope of illumination is not only reached more than 160 degree, guaranteed that simultaneously light source is more even in irradiation.。

Of the present utility modelly further be set to: lens body is a rectangle, is arranged side by side five lampshades on lens body, and equidistant the setting.

This is arranged on and is provided with five equidistant lampshades on the lens body, and this is the result who sets out according to actual conditions, equidistantly be provided with in order to guarantee, and when all LED give out light in lens, also can uniform irradiation, as for quantity, can adjust according to actual conditions.

Description of drawings

Fig. 1 is the structural representation of present embodiment;

The specific embodiment

With reference to figure 1 as can be known, a kind of asymmetric wide-angle lens, comprise lens body 1, on lens body 1, be provided with the lampshade 2 of five protuberances, and equidistant the arrangement, lampshade 2 is made more than or equal to 4.54 transparent material by refractive index, the sidewall of lampshade 2 is vertical with lens body 1, the global shape of lampshade 2 is " ω " type, and the top of lampshade 2 evenly tilts to two arcs side, constitutes unsymmetric structure.

The structure of present embodiment is very simple, but but can reach good effect, the angle of irradiation can be more than 160 degree, and keep illumination even, owing to adopted high-index material, and utilize the shape of lampshade, make the light source uniformly light-emitting, on lens body a plurality of lampshades can be set in the utility model, the shape of lampshade also has other selections certainly, and present embodiment just discloses wherein a kind of mode.

Claims

1. an asymmetric wide-angle lens comprises lens body, it is characterized in that: be provided with the lampshade of a protuberance on lens body at least, lampshade is made more than or equal to 4.54 transparent material by refractive index, and the sidewall of lampshade is vertical with lens body.

2. according to the described asymmetric wide-angle lens of claim 1, it is characterized in that: the global shape of lampshade is " ω " type, and the top of lampshade evenly tilts to two arcs side.

3. according to claim 1 or 2 described asymmetric wide-angle lenses, it is characterized in that: lens body is a rectangle, is arranged side by side five lampshades on lens body, and equidistant the setting.