Lens

A lens and curved surface technology, applied in the field of optical design, can solve problems such as the difficulty of concentrated illumination, the difficulty of deflecting light to the other side, and the inability to deflect light to the other side, etc.

Inactive Publication Date: 2011-08-24
FOSHAN INST SUN YAT SEN UNIV +1
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the light of the LED is symmetric to the left and to the right, and the light intensity of the center is greater than that of the edge, it is difficult to concentrate the light on a certain half space.
At present, there are some designs about deflecting light to one direction, but it is difficult to deflect most of the light

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lens
  • Lens
  • Lens

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] based on figure 1 with figure 2 , The first embodiment of the present invention figure 1 Shown. The coordinate axis XYZ is marked in the figure. The lens consists of a light-emitting surface and a light-incident surface. The light-emitting surface is composed of the curved surface 103 on the left, the 104 and 105 curved surfaces on the right, and the plane 106 connecting the above three curved surfaces in the middle; the light-incident surface is composed of the spherical curved surface 107 on the left and the concave arc surface 108 on the right, and the concave surface is connected between them. The plane 109 of the arc 108. The curved surfaces 103, 104, and 105 are all rotationally symmetric curved surfaces and have a common rotation axis z-axis.

[0023] In the first embodiment, the curved surface 105 is located at the upper end of the curved surface 104, and its shape is exactly the same as that part of the curved surface 103 above the surface 104, forming a comple...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a lens for an LED (light-emitting diode) light source, which comprises an incident plane and an emergent plane of light. The emergent plane comprises a left rotating symmetric curved surface, a right rotating symmetric curved surface, a connecting curved surface and a plane interface, wherein one of the two rotating symmetric curved surfaces is a saddle-like arch-shaped curved surface, the other one is a bowl-shaped curved surface, and the two rotating symmetric curved surfaces have a same symmetric central straight line Z axis; and the connecting surface is arranged above the bowl-shaped curved surface for connecting the outer arc-shaped curved surface with the bowl-shaped curved surface. The inner surface comprises a 1/4 spherical surface and an inner concave surface, wherein the inner concave surface is obtained by enabling an inner concave arc line and a straight line to rotate 180 degrees around the direction which is vertical to the straight line. An LED is placed on the rotating symmetric central axis, and the lens can deflect most of light emitted by the LED to one direction to form a light spot which is similar to a semicircle, thereby being especially applicable to occasions which need to mount the lens on outdoor walls for lighting squares outside the walls, preventing light from excessively irradiating the walls, and realizing very high light energy utilization rate.

Description

technical field [0001] The invention relates to a lens for LED lighting, belonging to the technical field of optical design. Background technique [0002] The existing LED lighting is mainly aimed at indoor lighting and outdoor lighting. The optical system light distribution types involved in outdoor road lighting mainly cover five types of light distribution from Type 1 to Type 5. The reported lens optical systems mainly rely on symmetrical curved surfaces to control light. Chinese patent document CN100495113 relates to a design method of an optical lens, which can use the symmetrical distribution of light to complete a left-right symmetrical optical lens structure in which light is in an approximately rectangular area, and its light distribution type belongs to Type I light distribution of road lighting. Patent CN101539267A can also complete a circular spot design through a tulip-shaped lens, but the formed spot still belongs to the rotationally symmetrical spot distribut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F21V5/04F21Y101/02F21Y115/10
Inventor 王钢罗滔周烨
Owner FOSHAN INST SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap