It occurs to me that a conventional phono pickup is basically a cam follower...a mechanical device to trace the shape of a template (the recorded groove). We think of it as a very small mechanical device but it is actually very large in context of the technology of "nanomechanical" machines, a field that has seen amazing progress in recent years. If someone (with a lot of money) wanted to make a giant leap forward in vinyl playback I think that a nanomechanical phono pickup would make more sense than this optical approach.
Nanomechanical machines are fabricated like electronic integrated circuits, and usually include, on the same chip, the associated electronic circuits. Tracking force would be so low that you might need an optical servo arm to track the groove.
A project to develop such a pickup would be attractive only to a multimillionare audiophile with technical leanings and not enough to do. Anyone out there?
Nanomechanical machines are fabricated like electronic integrated circuits, and usually include, on the same chip, the associated electronic circuits. Tracking force would be so low that you might need an optical servo arm to track the groove.
A project to develop such a pickup would be attractive only to a multimillionare audiophile with technical leanings and not enough to do. Anyone out there?