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Detection of configuration changes in illumination system

A lighting system, lighting signal technology, used in the testing of machine/structural components, measuring devices, photometry, etc., can solve problems such as safety hazards, lighting system operation, etc.

Active Publication Date: 2013-05-08
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the configuration of the optics is altered by tampering or undesired damage, the lighting system will not function as intended from its optical design and can pose a safety hazard

Method used

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  • Detection of configuration changes in illumination system
  • Detection of configuration changes in illumination system
  • Detection of configuration changes in illumination system

Examples

Experimental program
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Embodiment Construction

[0016] Lighting systems typically include a light source and one or more photoelectric elements. The light source may be an off-the-shelf package (eg, a standardized, commercially available package) comprising the light source and supporting circuitry fabricated using integrated circuit technology. Depending on the application, the designer of the lighting system configures one or more optical elements (eg, mirrors and lenses) in a position to receive and process the light. Another example of an element is a light shielding element. Other elements of the system may include structural elements like support structures on which the various elements are mounted, attached or supported in place. If the position of these elements is changed in the configuration, eg, by significant movement, damage, or removal, the operation of the illumination system or optical system may be significantly impaired.

[0017] The technique detects a change in the configuration position of one or more...

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Abstract

Technology for detecting a change in a configuration position of one or more elements in an illumination system is described. A light source generates an illumination signal, and an element of the system directs a portion of the light of the signal back to a light detector. In one example, the portion of light is reflected back to the light detector. By monitoring an output signal of the light detector based on the directed light, control circuitry can detect that a position of an element of the system has changed. In one example, an off-the-shelf integrated circuit laser diode package including a monitor photodiode can be used with a reflective element. In one example, the reflective element is a tilted optical element. Changes can be detected in the configuration of one or more optical elements of the illumination system which are outside the laser diode package.

Description

Background technique [0001] Lighting systems are used in many applications. For example, they can be used in depth camera systems such as time-of-flight (TOF) cameras, radar systems, and mass spectrometers. The lighting system includes light sources such as lasers or light emitting diodes (LEDs). Typically, additional optical processing elements or light processing elements such as lenses and mirrors are incorporated into the optical design of the illumination system. For example, these light management elements may be used to direct light from a light source to a target location or to spread light over a target area. If the configuration of the optical elements is altered by tampering or undesired damage, the lighting system cannot function as intended from its optical design and can pose a safety hazard. Contents of the invention [0002] The inventive technique provides detection of changes in position of elements deployed in a lighting system. In particular, the tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00
CPCG01J1/32G01J1/0228G01B11/14
Inventor S·麦克尔道尼D·易
Owner MICROSOFT TECH LICENSING LLC