OPTICAL INSTRUMENT AND OPTICAL ELEMENT PROVIDING EXPANDED EXIT PUPIL
    2.
    发明公开
    OPTICAL INSTRUMENT AND OPTICAL ELEMENT PROVIDING EXPANDED EXIT PUPIL 有权
    与光学元件光学仪器为创建扩大的出瞳

    公开(公告)号:EP1266257A1

    公开(公告)日:2002-12-18

    申请号:EP01911994.0

    申请日:2001-03-20

    发明人: MERCER, Graham

    IPC分类号: G02B27/44

    摘要: The invention provides an optical instrument including means (1, 2) to produce an optical image to be viewed by an observer including a diffractive element (7) located at an intermediate focal or image plane (4) of the optical instrument and comprising a pattern of a plurality of areas effective to cause diffraction interference in light passing through the optical instrument and thereby produce an expanded exit pupil (6) comprising a combination of a multiplicity of exit pupils displaced relative to one another transverse to an optical axis (3) of said instrument.