Light source power tester
First Claim
Patent Images
1. A device for determining electromagnetic radiation emission, comprising:
- a photoresponsive element constructed and arranged for removable attachment to a selected source of electromagnetic radiation, capable of exhibiting a change in a visible characteristic responsive to electromagnetic radiation from the source to which it is attached and being free of ablation by the electromagnetic radiation further comprising one or more of an optical source operation detector, a beam collimator a thermal buffering element, a window and an optical filter.
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Abstract
A device for testing the light power output of an optical system comprises a thermochromic element, a body element optionally providing collimation or other means of reproducible positioning, and optionally filters and attenuation. A preferred device fits onto the end of an optical power delivery system, and the thermochromic element changes color if the system output is above a defined threshold. An alternative device provides a flat target with a The device may be adapted to be sterilizable, and may be disposable. Optional means for ensuring that the light delivery system is operational during the measurement are provided.
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Citations
27 Claims
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1. A device for determining electromagnetic radiation emission, comprising:
a photoresponsive element constructed and arranged for removable attachment to a selected source of electromagnetic radiation, capable of exhibiting a change in a visible characteristic responsive to electromagnetic radiation from the source to which it is attached and being free of ablation by the electromagnetic radiation further comprising one or more of an optical source operation detector, a beam collimator a thermal buffering element, a window and an optical filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of determining whether the light power output of a source exceeds a threshold power level, the method comprising:
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a) providing a tester, the tester comprising a thermochromic element capable of absorbing energy from said source, said thermochromic element characterized in exhibiting a change in a visible characteristic when its temperature exceeds a threshold value, the tester further comprising one or more of optical source operation detector means, thermal buffering elements, windows, and optical filters;
b) providing a demarcation on said thermochromic element where the area within said demarcation defines a testing zone;
c) positioning said demarcated thermochromic element so that the light output from the source illuminates essentially all of said testing zone;
d) operating said source for a pre-determined length of time; and
e) observing the response of the area within the demarcated zone of said thermochromic element;
whereby the observation of a response or lack of a response-of said thermochromic element determines whether said light power output does or does not exceed a predetermined level. - View Dependent Claims (24, 25, 26, 27)
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Specification