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Device and process for uniformly lighting an operating area

  • US 8,050,547 B2
  • Filed: 04/06/2009
  • Issued: 11/01/2011
  • Est. Priority Date: 04/17/2008
  • Status: Active Grant
First Claim
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1. A device for uniformly lighting at least one lighting field, the device comprising:

  • a lighting fixture housing;

    a lighting unit with a plurality of lighting elements accommodated in said lighting fixture housing, said plurality of lighting elements providing at least one lighting field area as output;

    a camera having a camera acquisition area, said camera providing data relating to image segments of said at least one lighting field area as output;

    a control unit for providing actuating signals for actuating said lighting elements with data acquired by said camera in said camera acquisition area as said image segments;

    an image processing unit receiving said output of said camera, said image processing unit determining parameters of said image segments to light the at least one lighting field based on said data, wherein said control unit adjusts the actuating signals, for the plurality of lighting elements, to reduce the differences in the luminosities of the image segments based on said parameters of said image segments determined by said image processing unitan operating unit;

    a display unit, wherein;

    said control unit switches on all lighting elements of the lighting unit simultaneously;

    said camera acquires an image of the operating area, said image being displayed on said display unit;

    said operating unit sets at least one lighting field of interest with a corresponding brightness distribution;

    said control unit switches off all lighting elements and said control unit switches on each one of the plurality of lighting elements one after another in a sequence and said camera acquires an image for every single lighting element and stored in a first data field;

    said image processing unit analyzes the first data field to determine if said camera was hiding from view;

    said image processing unit further analyzes the first data field such that said image processing unit determines the parameters for actuating the plurality of lighting elements, said parameters being stored in a first parameter field;

    said control unit switches the individual lighting elements and a control view of the lighting is provided as output on the display unit;

    said operating unit confirms the actuation of the plurality of lighting elements, wherein initialization is terminated and operation of said lighting element is started;

    a polling is performed via said operating unit to execute the first mode of operation for uniform lighting and the first mode of operation is continued;

    said image processing unit analyzes the data image acquired by said camera in a continuous sequence and said image processing unit compares the first data field and said image processing unit adjusting the actuation parameters of the first parameter field; and

    the actuation by the control unit of the individual lighting elements of the lighting unit is performed according to the first parameter field and the first mode of operation is continued without interruption with a return to said polling.

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