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公开(公告)号:US06590709B1
公开(公告)日:2003-07-08
申请号:US09062531
申请日:1998-04-17
申请人: Yuichiro Ori , Koji Miyai , Hiromu Mukai , Shigeto Ohmori
发明人: Yuichiro Ori , Koji Miyai , Hiromu Mukai , Shigeto Ohmori
IPC分类号: G02B518
CPC分类号: B29D11/00769 , B29D11/00269 , B29D11/00432 , G02B5/1852 , G02B5/1876
摘要: A diffractive optical element acts as a lens. The optical element has a diffraction grating. The diffractive grating is provided with a plurality of ridges. Each of the ridges has a transmissive surface. A sectional profile of the transmissive surface is composed of a plurality of successively connected strait lines of an identical length. The length varies from one ridge to another.
摘要翻译: 衍射光学元件用作透镜。 光学元件具有衍射光栅。 衍射光栅具有多个脊。 每个脊具有透射表面。 透射表面的截面轮廓由多条相同长度的相继连接的海峡线组成。 长度从一个脊到另一个不同。