The mechanism inside the laser head of a DVD / CD ROM player How it focuses and keep tracking on those ultra-tiny tracks. A quick look at the optical head and how it it does fine focusing and tracking.
https://www.youtube.com/watch?v=-7IRB7lb9lQ
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The mechanism inside the laser head of a DVD / CD ROM player How it focuses and keep tracking on those ultra-tiny tracks. A quick look at the optical head and how it it does fine focusing and tracking.
https://www.youtube.com/watch?v=-7IRB7lb9lQ
Very cool thanks for the knowledge and the demo