Patent ID: 7839503

Claim:
A system for testing solar cells, comprising: a first light source configured to generate a first optical beam; a second light source configured to generate a second optical beam; a reflector for each light source, configured to collimate and direct each of the first optical beam and the second optical beam; a spectral filter assembly associated with each of the first light source and the second light source, the spectral filter assembly configured to (a) receive the first optical beam and the second optical beam (b) split each of the first optical beam and the second optical beam into “N” smaller optical beams, and (c) filter the “N” smaller optical beams; a re-imaging assembly for each spectral filter assembly configured to re-Image the smaller “N” optical beam at a dichroic mirror that receives one or more N beams as a portion of the first optical beam and as a portion of the second optical beam; wherein the re-imaging assembly adjusts an amount of optical beam that reaches the dichroic mirror; wherein the dichroic mirror is configured to transmit a portion of the first optical beam and the second optical beam and reflect a portion of the first optical beam and second optical beam; wherein the dichroic mirror transmits an optical beam of a wavelength and reflects an optical beam of another wavelength; and a reflector mirror for reflecting a portion of the first optical beam and the second optical beam as received from the dichroic mirror to a test plane.