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a focusing device

A technology with the same and farthest position, applied in the direction of lighting device, lighting device parts, light source fixing, etc., can solve the problems of complex mechanical transmission, poor light shape, difficult control, etc., and achieve high light efficiency utilization and mechanical transmission. Simple, good color mixing effect

Active Publication Date: 2016-05-04
广州市德晟光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of focusing device is that the light shape is poor, and the mechanical processing precision of the focusing transmission part is high, so it is difficult to control
[0006] In summary, the existing focusing devices have the defects of low light efficiency utilization, poor color mixing or light shape, and complicated mechanical transmission.

Method used

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Such as Figure 4a , 4b As shown, the focusing device provided by the present invention includes a lamp 1 and a lens 2 arranged on the same central axis. The lens 2 can move away from the lamp 1 along the central axis. The moving distance of the lens 2 is L is the distance between the farthest position L1 of the lens 2 and the lamp 1 and the closest position L0 of the lens 2 and the lamp 1, and a distance between the lamp 1 and the lens 2 at the closest position L0 Light guide column 3.

[0024] The lens 2 is hemispherical.

[0025] The light guide column 3 guides all the light emitted by the lamp. Preferably, the light guide column 3 is installed in close contact with the lamp 1 , so that all the light emitted by the lamp passes through the light guide...

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Abstract

The invention discloses a focusing device, which comprises a lamp and a lens which are arranged on the same central axis. The lens can move along the central axis towards a direction far away from the lamp. The moving distance of the lens is the distance between a position of the lens which is farthest from the lamp and a position of the lens which is closest to the lamp. The focusing device is characterized in that a light pipe is arranged between the lamp and the position of the lens which is closest to the lamp. The focusing device provided by the invention has the beneficial effects of higher light utilization ratio, good color mixing effect, good light shape and simple mechanical transmission.

Description

technical field [0001] The invention relates to an optical focusing device, in particular to a focusing device capable of focusing by moving a lens. Background technique [0002] The existing focusing device adjusts the focus by changing the distance between the lens and the lamp (eg, lamp bead) by moving the lens. Such as Figure 1a , 1b As shown, the light emitted by the luminaire is gathered into a beam through the lens, and the position of the lens is moved. When the distance between the lens and the luminaire becomes longer, the formed beam changes from aggregation to divergence, which can be used for stage lighting settings, etc. [0003] The disadvantage of this focusing device is that the utilization rate of light efficiency is not high. The farther the lens is from the luminaire, the less of the light emitted by the luminaire passes through the lens. When the lens is farthest from the lamp, a large part of the light emitted by the lamp cannot pass through the len...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V14/06F21V13/02
Inventor 艾元平艾元安
Owner 广州市德晟光电科技股份有限公司