Patent Number: 8,089,696

Title: Illumination optical system and image projector using same

Abstract: An illumination optical system has a condenser, a first lens array, a second lens array, and a polarized beam splitting surface. The condenser and the first and second lens arrays compress light incident on the condenser. The distance between a lens cell in the first lens array and a lens cell in the second lens array is appropriately set, whereby an illuminated surface is illuminated brightly and efficiently without significant loss of light amount.

Inventors: Sudo; Takashi (Utsunomiya, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G02B 27/10 (20060101)

Expiration Date: 2020-01-03 0:00:00