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US06760159B2 Diffractive optical element and optical system having the same 失效
衍射光学元件和具有该衍射光学元件的光学系统

  • Patent Title: Diffractive optical element and optical system having the same
  • Patent Title (中): 衍射光学元件和具有该衍射光学元件的光学系统
  • Application No.: US09568057
    Application Date: 2000-05-10
  • Publication No.: US06760159B2
    Publication Date: 2004-07-06
  • Inventor: Takehiko Nakai
  • Applicant: Takehiko Nakai
  • Priority: JP9-239026 19970820
  • Main IPC: G02B518
  • IPC: G02B518
Diffractive optical element and optical system having the same
Abstract:
In a diffractive optical element, which is formed by laminating at least three layers of diffraction gratings made of at least three kinds of materials which differ in dispersion, at least three design wavelengths are set.
Abstract(Chinese):

在通过层叠由至少三种不同色散的材料制成的至少三层衍射光栅形成的衍射光学元件中，设置至少三个设计波长。

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