CN101988681B

CN101988681B - Asymmetrical wide-angle lens

Info

Publication number: CN101988681B
Application number: CN 201010550918
Authority: CN
Inventors: 张卫东
Original assignee: SHANGHAI BAIYI LIGHTING ELECTRONIC CO Ltd
Current assignee: Baiyi Lighting Shanghai Holdings Ltd
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2013-02-13
Anticipated expiration: 2030-11-19
Also published as: CN101988681A

Abstract

The invention relates to a light source accessory, in particular to an asymmetric wide-angle lens. An asymmetric wide-angle lens of the present invention includes a lens body on which at least one raised lampshade is made of a transparent material with a refractive index greater than or equal to 4.54, and the side wall of the lampshade is perpendicular to the lens body. With the above structure, when the light source emits light in the lampshade, according to the law of refraction, the refraction angle of the light passing through the side wall of the lampshade will be less than or equal to 20 degrees and the luminous angle will be greater than 160 degrees, so as to ensure that when the light shines on the side wall, the range of light can be Reaching above 160 degrees, due to the large refractive index, the light irradiated on the top of the lampshade will be evenly distributed after refraction, and the light on the side will be relatively evenly distributed in the irradiation area after refraction, the illumination is very uniform, and the cost is very low. Low, just change the refractive index of the lampshade and the angle between the lampshade and the lens body to get this effect.

Description

Asymmetirc wide angle lens

Technical field

The present invention relates to a kind of light source accessory, especially a kind of Asymmetirc wide angle lens.

Background technology

Road in the market and the lampshade of tunnel lamp all are 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 in 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 again use cost; 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 compare is low.

Summary of the invention

The invention provides the Asymmetirc wide angle lens that a kind of illumination is even, cost is low.

The technical solution adopted for the present invention to solve the technical problems is: a kind of Asymmetirc 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 less than or equal to 20 degree light emitting anger 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 large, be radiated at the light at lampshade top after refraction, can evenly distribute, and the light of side be 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.

The further setting of the present invention is: the global shape of lampshade is " ω " type, and the top of lampshade evenly tilts to two arcs side.

This shape that arranges lampshade is set as " ω " type, the top of lampshade evenly tilts to two arcs side, the even inclination here refers to 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 with equal illumination is different, make the incident light of light source and the incidence angle that plane of refraction forms can be in a comparison range at the inclined surface of lampshade, 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.。

The further setting of the present invention is: lens body is rectangle, is arranged side by side five lampshades in 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 Asymmetirc wide angle lens, comprise lens body 1, be provided with the lampshade 2 of five protuberances in lens body 1, and equidistantly arrange, 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, consists of 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 among the present invention, 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, comprising a lens body, is characterized in that: the lens body is at least provided with a raised lampshade, the lampshade is made of a transparent material with a refractive index greater than or equal to 4.54, and the side wall of the lampshade is perpendicular to the lens body , the overall shape of the lampshade is "ω" type, and the top of the lampshade is evenly inclined to the double arc side.

2. The asymmetric wide-angle lens according to claim 1, characterized in that: the lens body is rectangular, and five lampshades are arranged side by side on the lens body and arranged equidistantly.