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Exposure apparatus of an optical disk master, method of exposing an optical disk master and pinhole mechanism
Exposure apparatus of an optical disk master, method of exposing an optical disk master and pinhole mechanism
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机译:光盘原版的曝光设备,曝光光盘原版的方法和针孔机构
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摘要
An exposure apparatus of an optical disk master having a laser source, a deflector for deflecting a recording laser beam obtained based on the laser beam of the laser source and an objective lens for focusing the recording laser beam on an optical disk master, has a lens system provided between the laser source and the deflector, which has a first lens for focusing the laser beam and a second lens for adjusting the focused laser beam to a desired beam diameter; and a pinhole placed at a practical focal position of the lens system.
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