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Homogenizing components and light source system

A technology of optical components and light sources, applied in optical components, optics, condensers, etc., can solve problems such as crosstalk, side lobe spots, and reduced light utilization, achieving high light utilization, avoiding reduction in light utilization, and simple structure Effect

Active Publication Date: 2015-09-09
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires high machining accuracy, and the light between the microlenses 11 and 12 will have a certain amount of crosstalk, causing side lobe spots to appear on the target plane. It will affect the light output, which will reduce the light utilization efficiency

Method used

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  • Homogenizing components and light source system
  • Homogenizing components and light source system
  • Homogenizing components and light source system

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] Explanation of technical terms:

[0044] Rectangular solid angle: eg Figure 31 As shown, there is a point O on the vertical line passing through the center point of the rectangle ABCD, and the solid angle formed by the rectangle ABCD with respect to the point O is a rectangular solid angle;

[0045] The major angle of the solid angle of a rectangle: eg Figure 31 As shown, the angle formed by the line segment connecting the midpoint of width AB and the midpoint of width CD to point O;

[0046] The small angle of the solid angle of a rectangle: eg Figure 31 As shown, the angle formed by the line segment connecting the midpoint of long AD and the midpoint of long BC to point O;

[0047] Illuminance: luminous flux per unit area;

[0048] Luminous intensity: Luminous flux per unit solid angle.

[0049] See Figure 5a and Figure 5b , Fi...

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Abstract

A light uniforming element used for shaping incident light generated by a light source (61) comprises a free-form surface (63, 64). The free-form surface is formed through deformation of a standard curved surface (62) located at a predetermined position in the direction of the central axis of the light source. In the direction from the central axis to the lateral of the central axis, except in the direction of the central axis, the differences between incident angles of the incident light on the free-form surface (63, 64) and incident angles of the incident light on the standard curved surface (62) maintain the same sign; the absolute values of the differences between incident angles of the incident light on the free-form surface (63, 64) and incident angles of the incident light on the standard curved surface (62) monotonically increase; the change rates of the differences between incident angles of the incident light on the free-form surface (63, 64) and incident angles of the incident light on the standard curved surface (62) descend, to make the emergent light of the free-form surface (63, 64) have a more uniform light intensity distribution within a predetermined solid angle than the incident light do. A light source system comprising above light uniforming element is provided.

Description

technical field [0001] The invention relates to the field of illumination and display, in particular to a uniform light element and a light source system. Background technique [0002] Light sources such as semiconductor lasers and LEDs are widely used in lighting, projection, optical phototypesetting, optical storage and other fields. In these applications, it is necessary to form an illumination distribution with a certain size and a regular shape on the target plane as much as possible, such as a rectangular uniform distribution. [0003] However, the light distribution of commonly used light sources is not ideal. For example, the light distribution of semiconductor lasers on the cross section is generally elliptical Gaussian, and the light distribution on the long and short axes is as follows: figure 1 As shown, the light distribution of light-emitting diodes on the cross section is generally bell-shaped, and the light distribution on the cross section is as follows f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/00F21V7/00
CPCG02B19/0066G02B27/0983G02B19/0061G02B19/0023G02B27/0927
Inventor 曹亮亮杨毅胡飞
Owner APPOTRONICS CORP LTD