Patent ID: 8016439
Filing Date: 2011-09-13
Classification: F21S,G02B

Abstract:
1. A solar simulator that allows light radiated from a light source to be incident on an integrator, allows light emitted from the integrator to be incident on a collimation lens, and allows parallel light to be emitted from the collimation lens, wherein, when a circumradius of the integrator is r, a parallelism angle of the parallel light is φ, and a focal distance of the collimation lens is f=r/tan φ, the focal distance f is selected such that the parallelism angle φ becomes less than 2.5°, and when an emission angle of the light emitted from the integrator is θ, a diameter of the collimation lens is D, and a viewing angle of the collimation lens when viewed from the integrator is θX=2×a tan (D/2f), the emission angle θ is configured to be smaller than the viewing angle θX.