发明授权
US07248409B2 Optical element, optical lens, optical head apparatus, optical information apparatus, computer, optical information medium player, car navigation system, optical information medium recorder, and optical information medium server
有权
光学元件，光学透镜，光学头装置，光学信息装置，计算机，光学信息媒体播放器，汽车导航系统，光学信息媒体记录器和光学信息媒体服务器
- 专利标题： Optical element, optical lens, optical head apparatus, optical information apparatus, computer, optical information medium player, car navigation system, optical information medium recorder, and optical information medium server
- 专利标题（中）： 光学元件，光学透镜，光学头装置，光学信息装置，计算机，光学信息媒体播放器，汽车导航系统，光学信息媒体记录器和光学信息媒体服务器
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申请号： US10716990申请日： 2003-11-18
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公开(公告)号： US07248409B2公开(公告)日： 2007-07-24
- 发明人: Yoshiaki Komma , Sadao Mizuno , Yasuhiro Tanaka
- 申请人： Yoshiaki Komma , Sadao Mizuno , Yasuhiro Tanaka
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
- 优先权： JP2002-340589 20021125
- 主分类号： G02B5/18
- IPC分类号： G02B5/18
摘要：
An optical lens includes a hologram, a refractive lens, and a phase level difference. The hologram has a sawtooth shape grating having a sawtooth shape in cross-section, and generates +2nd-order diffracted light most strongly with respect to blue light and +1st-order diffracted light most strongly with respect to red light, by setting a height of the sawtooth shape grating. The +2nd-order diffracted light of blue light is condensed through a substrate with a thickness t1, and the +1st-diffracted light of red light is condensed through a substrate with a thickness t2 (t1
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