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I am trying create a focal point of multiple parallel rays and move that point along a perpendicular plane somehow using the rotation of a lens or mirror via a galvanometer. It is a little hard to explain so I have included a diagram.

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I understand that I could use a converging lens and rotate it to move the focal point, however this would move the point in a circular motion. Does anyone have any ideas on a setup where the focal point could be moved along the plane via rotation of a lens and/or mirror arrangement?

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For anyone interested, I have found the type of lens I was after. It is called an f-theta scanning lens.

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  • $\begingroup$ Could you write more from it, with references? $\endgroup$
    – peterh
    Feb 14, 2017 at 5:56

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