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Light source module and projection device

A light source module and light source technology, which is applied to lighting devices, projection devices, lighting device components, etc., can solve problems such as abnormal lamp temperature, reduced life of mercury lamps, abnormal electrode consumption, etc., and achieve the effect of increasing life

Active Publication Date: 2016-05-11
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although most of the light will pass through the flat glass or lens, a small amount of light will be reflected back to the mercury lamp, causing abnormal lamp temperature or abnormal electrode consumption, thereby reducing the life of the mercury lamp

Method used

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  • Light source module and projection device
  • Light source module and projection device

Examples

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Embodiment Construction

[0015] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0016] figure 1 It is a schematic diagram of a light source module provided by an embodiment of the present invention. Such as figure 1 As shown, the light source module 10 includes a light source 11 and a lens 12 . The light source 11 is used to generate light beams, specifically, the light source 11 may be a mercury lamp. Preferably, a light source cover 13 is provided on the periphery of the light source 11 to reflect the light beam so that the light beam is emitted toward the lens 12 . The lens 12 is disposed on one side of the light source 11 . The lens 12 is used to converge the light beam emitted by the light source 11 . The lens 12 is a biconvex lens, and the incident surface 121 is closer to the light source 11 than the outgoing surface. Specifically, the...

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PUM

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Abstract

The invention provides a light source module and a projecting device. The light source module comprises a light source and a lens, wherein the light source is used for generating a light beam, and the lens is arranged on one side of the light source and used for converging the light beam. An incident plane of the lens is a spherical surface or a first aspheric curved surface, an emergent plane of the lens comprises two second aspheric curved surfaces configured symmetrically about an optical axis of the lens, and an optical axis of each second aspheric curved surface deviates from that of the lens. Each second aspheric curved surface comprises a first portion and a second portion, wherein the second portion is close to the optical axis of the lens relative to the first portion, and the curvature radius of the second portion is less than that of the first portion. An absolute value of the curvature radius of the incident plane is more than that of the curvature radius of each second aspheric curved surface.

Description

technical field [0001] The present invention relates to the field of projection devices, in particular to a light source module and a projection device that reduce light reflected back to a light source. Background technique [0002] In the prior art, when designing the mercury lamp of a projector, a piece of mid-infrared (UVIR) plate glass or lens is usually placed in front. Although most of the light will pass through the plate glass or lens, a small amount of light will be reflected back to the mercury lamp, causing abnormal lamp temperature or abnormal electrode consumption, thereby reducing the life of the mercury lamp. Contents of the invention [0003] The light source module and projection device provided by the present invention can reduce the light reflected back to the light source, thereby increasing the life of the light source. [0004] In a first aspect, the present invention provides a light source module, including: a light source and a lens. The light s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20F21V5/04
CPCF21V5/04F21V5/041G03B21/2006
Inventor 简志雄
Owner QISDA OPTRONICS (SUZHOU) CO LTD
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