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Light source reflector

A technology of reflector and light reflection, applied in the field of light source reflector, can solve the problem of expensive light source

Inactive Publication Date: 2012-07-04
LI COR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light sources can be expensive, and thus providing uniform illumination at low cost can be an issue, especially as the size of the target that needs to be illuminated increases in size

Method used

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  • Light source reflector
  • Light source reflector

Examples

Experimental program
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Embodiment Construction

[0019] The present invention provides a light source reflector. The light source reflectors of the various embodiments described herein are particularly useful as light sources in photosynthesis measurement and analysis systems.

[0020] Figure 1 illustrates a light source reflector 10 according to one embodiment. Figure 1a A front view of reflector 10 is shown, Figure 1b A cross-sectional side view of reflector 10 is shown, Figure 1c shows a front isometric view of reflector 10, and Figure 1d A rear isometric view of the reflector 10 is shown. As shown, the reflector 10 comprises a structure with four (4) walls defining an inner linear reflective surface 20 coupled together to form a square-conical-type inner structure with a square hole, the inner Surface 20 is angled such that hole 15 has an area smaller than that of hole 25 . For example, if Figure 1b As shown in , the walls have an angle of 10° relative to the central axis (thus a total divergence of 20° as indi...

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PUM

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Abstract

A light source reflector includes a structure having three or more internal reflective surfaces defining a first light entry aperture and a second light exit aperture having an area that is greater than the area of the entry aperture. A single light source, or a plurality of uniformly distributed light sources, such as one or more LEDs, located proximal the entry aperture provides illumination, which impinges on the reflective surfaces from the entry aperture and is reflected off the surfaces to provide a substantially uniform illumination pattern exiting the exit aperture. The reflector advantageously allows for the use of a source (e.g., LED(s)) that is smaller than the targeted area of illumination and also avoids creating hot-spots as the reflector does not focus the light, but rather reflects mirror images of the source off of the reflective surfaces.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation of, and claims the benefit of, U.S. Application No. 12 / 939,335 (Attorney Docket No. 85409-787154 (012000US) (formerly 020031-012000US) filed November 4, 2010, This US application is hereby incorporated by reference in its entirety for all purposes. Background technique [0003] The present invention relates generally to light reflectors, and more particularly to light source reflectors for use in photosynthesis measurement and analysis systems. [0004] In a photosynthesis measurement and analysis system it is useful to provide a uniform illumination pattern over the object of study (eg leaves) within a controlled analysis chamber. Light sources can be expensive, and thus providing uniform illumination at low cost can be a problem, especially as the size of the objects requiring illumination increases. [0005] It would therefore be desirable to provide a light source that overcomes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V7/22G01N21/01F21Y101/02
CPCF21V7/05F21Y2101/02F21Y2113/00F21Y2115/10
Inventor R·D·艾科尔斯
Owner LI COR