Optical systems employing stepped diffractive surfaces
    51.
    发明授权
    Optical systems employing stepped diffractive surfaces 失效
    采用阶梯衍射面的光学系统

    公开(公告)号:US06262844B1

    公开(公告)日:2001-07-17

    申请号:US09384819

    申请日:1999-08-27

    申请人: Yakov G. Soskind

    发明人: Yakov G. Soskind

    IPC分类号: G02B518

    摘要: Stepped diffractive surfaces (13) are used to reduce variations in the optical properties of an optical system as a result of a change in the temperature of all or a portion of the system. Such surfaces have optothermal coefficients which differ from the optothermal coefficients of both kinoforms and refractive elements. Accordingly, stepped diffractive surfaces can be combined with such elements to achieve overall thermal control of optical systems employing such elements.

    摘要翻译: 步进衍射面(13)用于减少由于系统的全部或一部分的温度变化导致的光学系统的光学特性的变化。 这些表面具有不同于两种类型和折射元件的光热系数的光热系数。 因此,台阶衍射面可以与这些元件组合以实现采用这种元件的光学系统的整体热控制。