| 摘要 |
An optical head apparatus for optical disks has a recording and reading laser beam generator and a wavelength reducer including reducing the wavelength of light from the laser generator. The laser beam generator is a separate unit from the head slider portion, the two being connected by an optical fiber which is used to transmit the recording and reading laser light to the slider. This arrangement enables short-wavelength laser light below 550 nm to be used for writing and reading operations without increasing the weight of the slider, thereby offering high-speed access and high recording densities.
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