Polarizing type optical apparatus

摘要

A polarizing type optical apparatus has a first polarizing element disposed in a path of an incident luminous flux produced by a light source and a second polarizing element disposed in the path of a luminous flux reflected from the first polarizing element. The first polarizing element has a p polarized light component transmitting characteristic which varies less with respect to an incident angle of a luminous flux than that of the second polarizing element and has a p polarized light component transmittance which is higher than that of the second polarizing element, and the second polarizing element has an s polarized light component transmitting characteristic which varies less with respect to an incident angle of a luminous flux than that of the first polarizing element and has an s polarized light component transmittance which is lower than that of the first polarizing element, such that the incident luminous flux produced by the light source is irradiated onto the first polarizing element, the luminous flux reflected by the first polarizing element consists mainly of an s polarized light component, and the luminous flux reflected by the second polarizing element consists of a substantially pure s polarized light component.