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    • 4. 发明申请
    • ACHROMATIC OPTICAL SYSTEM INCLUDING DIFFRACTIVE OPTICAL ELEMENT, AND METHOD OF FORMING SAME
    • 包含衍射光学元件的高光学系统及其形成方法
    • WO1996000912A2
    • 1996-01-11
    • PCT/US1995007231
    • 1995-06-06
    • THE UNIVERSITY OF NORTH CAROLINAFELDMAN, Michael, R.KOLSTE, Bob TeWELCH, W., HudsonYANG, Hedong
    • THE UNIVERSITY OF NORTH CAROLINA
    • G02B05/32
    • G02B27/0037G02B5/1876G02B5/188G02B5/189G02B5/32G02B6/262G02B6/4206G02B27/4272G02B27/4288G02B27/4294
    • An achromatic optical system that preferably includes a light source (25) for emitting light therefrom, an achromatic optical element (40) positioned to receive light emitted from the light source, and an optical detector (30) positioned to receive and detect light passing through the optical element. The achromatic optical element preferably includes a substrate (41) having opposing sides, a first computer generated hologram (43) positioned on one side of the substrate and adapted to receive light emitted from the light source, and a second computer generated hologram (45) positionally aligned on the opposite side of the substrate and adapted to receive light passing through the substrate from the first hologram at a predetermined location thereon. A method of forming an achromatic diffractive optical element is also provided which includes the steps of determining a first data set comprising a plurality of discrete phase values and discrete transition values and selecting from the first data set phase values and transition values to form a second data set for defining first and second holograms. A discrete value of the second data set is then replaced by another discrete value from the first data set. A change of an optical system error function is then determined responsive to the replacement in the second data set. If the error function is reduced, the new data set is retained.
    • 一种消色差光学系统,其优选地包括用于从其发射光的光源(25),定位成接收从光源发射的光的消色差光学元件(40),以及光学检测器(30),其被定位成接收和检测通过的光 光学元件。 消色差光学元件优选地包括具有相对侧的基板(41),位于基板的一侧上并且适于接收从光源发射的光的第一计算机产生的全息图(43)和第二计算机产生的全息图(45) 位于衬底的相对侧并且适于在其上的预定位置从第一全息图接收穿过衬底的光。 还提供了一种形成消色差衍射光学元件的方法,其包括以下步骤:确定包括多个离散相位值和离散转变值的第一数据集,并从第一数据集相位值和转换值中选择形成第二数据 用于定义第一和第二全息图。 然后,第二数据集的离散值被来自第一数据集的另一个离散值替换。 然后响应于第二数据组中的替换来确定光学系统误差函数的改变。 如果误差函数减少,则保留新的数据集。