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Beam Expander

what is laser pointer beam expander?

The laser beam expander increases the diameter of the collimated input beam to a larger collimated output beam for applications such as laser scanning, interferometry, and remote sensing. Contemporary laser beam expanders are non-focus systems developed from the basic principles of perfect optical telescopes. In such a system, the object rays enter parallel to the optical axis of the internal optics and exit parallel to the internal optics. This means that the entire system has no focal length.

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