Patent ID: 7835057
Filing Date: 2010-11-16
Classification: A61N,G01J,H05B

Abstract:
1. A method of setting an output level of a light delivery device ( 10 ) that comprises solid state light-emitting means ( 12 ), light output means ( 24 ; 24 , 26 ) for delivering emitted light to a site to be irradiated, intensity control means ( 16 ) for generating a control signal for adjusting at least the intensity of the delivered light, and a memory unit ( 30 ) for storing data including parameters indicative of intensity/power level, the light output means ( 24 ; 24 , 26 ) being temporarily connected to a separate radiometer ( 38 ) having means for detecting power levels of the delivered light, the light delivery device ( 10 ) and the radiometer ( 38 ) having respective control means ( 28 , 48 ) and data communications means ( 34 , 36 , 54 , 56 ) for communicating data therebetween, the method comprising a calibration sequence comprising the steps of: (i) with the light output means ( at the light delivery device ( (ii) adjusting the intensity control means ( at the radiometer ( (iii) measuring a series of actual output radiance levels delivered by the light output means ( (iv) transmitting the actual output irradiance levels to the light delivery device ( at the light delivery device ( (v) associating each of the actual output irradiance level measurements with the corresponding control signal parameters in said memory unit.