Patent ID: 7454990

Claim:
An accelerated weathering test apparatus of the type used to concentrate solar radiation upon at least one test specimen, the apparatus comprising: a target board operatively coupled to a reflector device; the target board configured to support at least one test specimen for exposure to concentrated solar radiation; the reflector device configured to reflect and concentrate solar radiation onto the at least one test specimen; and the reflector device including a bed and a plurality of mirrors, each mirror disposed on the bed in one of a first state, where solar radiation is reflected on the at least one test specimen, and a second state, where no solar radiation is reflected on the at least one test specimen, such that irradiance incident on the at least one test specimen from the reflector device is adjustable by movement of selected mirrors from the first state to the second state in response to an input in order to control one of a temperature of the at least one test specimen and the irradiance.