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Lens and lens system and purpose thereof

A lens system and lens technology, applied in the field of optical devices, can solve the problems of difficult lens preparation, affecting product yield, and high processing difficulty, achieving high utilization rate, saving production materials, and reducing manufacturing difficulty.

Active Publication Date: 2015-11-25
HANGZHOU GREAT STAR TOOLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Also for the processing of lenses, the more processing surfaces that require precise control or are difficult to process, the more difficult it is to prepare lenses, which directly affects the yield of products

Method used

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  • Lens and lens system and purpose thereof
  • Lens and lens system and purpose thereof
  • Lens and lens system and purpose thereof

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Embodiment Construction

[0056] The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

[0057] Such as figure 1 and figure 2 The shown lens 1 comprises a front surface 2, a back surface 3, and a side surface 4 extending between the front surface 2 and the back surface 3; the back surface defines a rear-facing cavity 5; the front surface 2 includes a central surface 201 , and surround the edge surface 202 connecting the central surface 201, the edge surface 202 extends between the central surface 201 and the side surface 4; the lens 1 defines a central axis 6, and the lens 1 passes through any cross section of the central axis 6, that is, the central cross section , the figures are the same, that is, the lens 1 is defined as an axisymmetric body, and the central axis is the central axis 6; the cavity 5 includes a sid...

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Abstract

The invention discloses a lens and a lens system and purposes thereof. The lens comprises a front surface, a rear surface, and a side surface extending between the front surface and the rear surface. The rear surface defines a cavity facing the rear part. The front surface comprises a central surface, and an edge surface connected with the central surface in a surrounding manner. The edge surface extends between the central surface and the side surface. The lens is an axisymmetric body and a central axis is defined. The lens is cooperatively placed on the central axis, and forms a lens system with an LED light source which can move in the cavity or other similar light sources. The lens system realizes high utilization rate of emergent light of the light source, and functions of collimation and focusing on incident light. The lens system can be used in a flashlight with a focusing function.

Description

technical field [0001] The invention relates to an optical device, in particular to a lens, a lens system and its application. Background technique [0002] With the continuous development of semiconductor materials and processes, light-emitting diodes (LEDs) are gradually replacing traditional light sources. This is due to the special light-emitting principle of light-emitting diodes, which consumes far less energy than ordinary incandescent lamps when achieving the same brightness, and has the advantages of long life and no pollution, and has broad prospects in the field of lighting and backlighting. . [0003] In LED lighting products, in order to obtain proper light distribution and light intensity, it is often necessary to install a lens in front of the LED lamp bead to achieve light convergence. For example, a Fresnel lens can emit light from its focus. The light turns into parallel light. [0004] In addition, in order to further make full use of the LED light, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/04F21V7/22F21L4/00F21Y101/02
CPCF21L4/00F21V5/04F21V7/22
Inventor 余闻天
Owner HANGZHOU GREAT STAR TOOLS
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