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    • 3. 发明申请
    • OPTICAL PICKUP DEVICE
    • 光学拾取器件
    • US20120020197A1
    • 2012-01-26
    • US13260969
    • 2009-03-30
    • Norio MatsudaYoshitaka Ono
    • Norio MatsudaYoshitaka Ono
    • G11B7/135
    • G11B7/1362G11B7/121G11B7/1359
    • An optical pickup device, which can effectively prevent occurrence of trouble in recording and reproducing of information due to the fact that an objective lens for each optical beam is contaminated while not adding unnecessary parts and while reducing a cost, is provided. An optical pickup device (P1) which performs the recording or reproducing of information in or from an optical disc (13) by using an optical beam (B) or (D), comprises: objective lenses (11) and (12) on which cleaning films which are activated by radiation of the optical beam (B) and clean their surfaces are formed in an optical path, and a control unit (15) for setting an optical path of the optical beam (B) in such a way that the optical beam (B) reflected by the optical disc (13) is radiated on the objective lens (12).
    • 提供了一种光拾取装置,其可以有效地防止由于每个光束的物镜被污染而不增加不必要的部分并且同时降低成本的事实而在信息的记录和再现中出现问题。 通过使用光束(B)或(D)执行信息记录或从光盘(13)的记录或再现的光学拾取装置(P1)包括:物镜(11)和(12) 通过光束(B)的辐射激活并清洁它们的表面的清洁膜被形成在光路中;以及控制单元(15),用于设置光束(B)的光路,使得 由光盘(13)反射的光束(B)被辐射在物镜(12)上。