Illumination optical system and image projection apparatus,申请号EP20120163214-传众专利搜索

Illumination optical system and image projection apparatus

申请公布号：EP2512128(A3)

申请号：EP20120163214

申请日期：2012.04.04

申请公布日期：2013.06.05

申请人：

CANON KABUSHIKI KAISHA

发明人：KAWASUMI, TAKEHITO

分类号：H04N5/74;H04N9/31

主分类号：H04N5/74

摘要：<p>An illumination optical system include a first lens array (9, 11, 14, 16, 18) including multiple lens cells that split a light beam emitted from a light source into multiple light beams, a second lens array (10, 12, 15, 17, 19) including lens cells that the light beams split by the lens cells of the first lens array are incident thereon, and an optical element (6) configured to illuminate an image display element by superposing light beams emerging from the second lens array on the image display element. At least one of the first lens array and the second lens array includes at least two lens cells each having a curved surface that is formed so as to be continuous with a curved surface of an adjacent lens cell, the at least two lens cells being decentered, and at least two lens cells of the first lens array have different radii of curvature.</p>