| 摘要 |
An optical disc apparatus comprises a light source, an optical disc, a beam splitting element for splitting a light beam from the light source into a first beam and a second beam, a light detection element for detecting the second beam and outputting a detection signal, a control circuit for controlling an intensity of the light beam from the light source on the basis of the detection signal from the detection element, so that an intensity of the light beam from the light source is uniform, and an optical system through which the first beam passes, to reproduce the information recorded on the optical disc.
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