Variable Beam Expander Thorlabs

The beam expander contains a fixed lens at the front followed by two movable lenses. Thorlabs also offers variable magnification beam expanders that use a rotating lens to achieve expansions from 2x to 5x or 5x to 10x. Thorlabs 0 5x to 2x galilean variable beam expanders reducers allow the user to easily adjust the beam diameter without altering the alignment of the optical setup.

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