Illumination optical system and projection-type display apparatus

摘要

An illumination optical system is configured to illuminate an optical modulator configured to modulate incident light and includes a condenser lens system that includes a meniscus lens with a concave on a light source side, and condenses light from a light source; and a spherical aberration corrector disposed on an optical modulator side of the condenser lens system. The illumination optical system satisfies:
0.6<|f/L|<1.40.9where f is a focal length of the condenser lens system, L is a length from an object-side principal point of the condenser lens system to the light source, and θ is half an angle at which the condenser lens system takes in the light from the light source.

主权项

1. An illumination optical system configured to illuminate an optical modulator configured to modulate incident light, the illumination optical system comprising:
a condenser lens system that includes a meniscus lens with a concave on a light source side, and condenses light from a light source; and a spherical aberration corrector disposed on an optical modulator side of the condenser lens system, wherein the illumination optical system satisfies:
0.6<|f/L|<1.40.9