Patent ID: 7683339

Claim:
An optical radiation sensor system for detecting radiation from a radiation source, the system comprising: a housing having a distal portion for receiving radiation from the radiation source and a proximal portion; a sensor element in communication with the proximal portion, the sensor element configured to detect and respond to incident radiation received from the radiation source; and motive means configured to move the housing with respect to the sensor element between at least a first position and a second position, a radiation pathway between the radiation source and the sensor element being defined when the housing is in at least one of the first position and the second position; wherein movement of the housing with respect to the sensor element causes a modification of intensity of radiation impinging on the sensor element; and wherein the housing is configured to be positioned at: (i) a first distance from radiation source in the first position, and (ii) a second distance from the radiation source in the second position, the first distance being different than the second distance.