再颁专利
USRE43106E1 Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens 有权
光拾取器兼容数字通用光盘和使用全息环形透镜的可刻录光盘

  • 专利标题: Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
  • 专利标题(中): 光拾取器兼容数字通用光盘和使用全息环形透镜的可刻录光盘
  • 申请号: US11849609
    申请日: 2007-09-04
  • 公开(公告)号: USRE43106E1
    公开(公告)日: 2012-01-17
  • 发明人: Jang-Hoon YooChul-Woo Lee
  • 申请人: Jang-Hoon YooChul-Woo Lee
  • 申请人地址: KR Suwon-si
  • 专利权人: Samsung Electronics Co., Ltd.
  • 当前专利权人: Samsung Electronics Co., Ltd.
  • 当前专利权人地址: KR Suwon-si
  • 代理机构: NSIP Law
  • 优先权: KR97-11297 19970328
  • 主分类号: G11B7/00
  • IPC分类号: G11B7/00
Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
摘要:
An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, a holographic lens including a holographic ring to transmit the light beams incident in an inner region of the holographic ring, and to diffract a specific light beam among the light beams emitted from the laser light sources incident in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media to corresponding photodetectors.
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