发明申请
- 专利标题: Wave plate and optical device using the same
- 专利标题(中): 波片和光学装置使用相同
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申请号: US10927232申请日: 2004-08-27
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公开(公告)号: US20050046946A1公开(公告)日: 2005-03-03
- 发明人: Kazushi Mori , Shingo Kameyama , Hitoshi Hirano , Koutarou Furusawa , Koji Tominaga , Masayuki Shono
- 申请人: Kazushi Mori , Shingo Kameyama , Hitoshi Hirano , Koutarou Furusawa , Koji Tominaga , Masayuki Shono
- 专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人: SANYO ELECTRIC CO., LTD.
- 优先权: JPJP2003-303790 20030828; JPJP2004-84829 20040323
- 主分类号: G02B5/18
- IPC分类号: G02B5/18 ; G02B5/30
摘要:
The present invention provides a wave plate capable of obtaining preferable phase conversion characteristic over a wide wavelength range. The wave plate includes an aluminum oxide film having linear grating groove patterns. The period L (μm) and the duty ratio De of the grating groove patterns are set at values within the first range specified by the following four formulas: L≦0.65 L≧2×10−14e31.263De L≦6.0317De2−10.352De+5.0516 (De−0.85)2/0.442+(L−0.41)2/0.392≦1
公开/授权文献
- US07046444B2 Wave plate and optical device using the same 公开/授权日:2006-05-16
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