Polarizing illuminant apparatus and image display apparatus

摘要

A polarizing illuminant apparatus includes a surface emission light source 1 that emits a monochroic and indefinitely polarized light, a tabular photonic crystal 2 arranged on a light emitting surface 1 a of the surface emission light source 1 to receive the light emitted from the light emitting surface 1 a, a quarter wave plate 3 that receives a light emitted from the surface emission light source 1 and transmitted through the photonic crystal 2 and a reflective polarization plate 4 arranged in substantially-parallel with the photonic crystal 2 to receive a light transmitted through the quarter wave plate 3.