Patent ID: 7667479

Claim:
An apparatus for testing concentration-type solar cells, the apparatus comprising: a light source for emitting light; a focusing unit for focusing the light emitted from the light source and turning the same into a light beam; a testing unit for testing any one of a plurality of solar cells of a wafer, the testing unit comprising two probes arranged for contact with the targeted one of the solar cells of the wafer and wherein the probes are fixed horizontally and vertically; and a wafer-positioning unit for moving the wafer horizontally and vertically comprising a first workbench engaged with a nut of a second workbench such that the second workbench is movable on the first workbench in a first horizontal direction and wherein a nut of an elevator is engaged with the second workbench such that the elevator is movable on the second workbench in a second horizontal direction perpendicular to the first direction and wherein the elevator is movable in a vertical direction and engageable with the wafer thus bringing a targeted one of the solar cells into contact with the testing unit.