Illumination device for a projector having a light modulator

    公开(公告)号:US11137615B2

    公开(公告)日:2021-10-05

    申请号:US16684574

    申请日:2019-11-14

    IPC分类号: G03B21/20 H04N9/31 G02B27/09

    摘要: An illumination apparatus for a projector that includes a light modulator is provided. The illumination apparatus includes a first illumination module emitting first radiation, a second illumination module emitting second radiation, a light mixing rod extending in the axial direction and a superposition unit, which superposes the first and second radiation and couples this into the light mixing rod. The superposition unit includes a first imaging optical unit which focuses the first radiation into the light mixing rod such that a first focus is present, and a second imaging optical unit which focuses the second radiation into the light mixing rod such that a second focus is present. The first focus is spaced apart from the second focus in the axial direction.