Proceedings PaperHigh bore-sight accuracy collimators
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This is an Optical Engineer's look at the engineering and testing concerns for a collimator requiring a 5 arcsecond bore-sight to its mechanical mounting datums. The collimator is of the off axis Newtonian type with a fairly fast f/number of 3.75. The primary aim of this paper is the special concerns of aligning a collimator very precisely to a mechanical datum, and doing it quickly. The optical engineering and test aspects of the alignment process are presented with an emphasis on information applicable to other designs. Metrology methods are all based on the LUPI or Laser Unequal Path Interferometer monitoring the Aspheric Mirror Alignment. The control of the bore-sight to the mechanical datums is reliant on a fixture system designed and built by the author to make volume production as painless as possible. The paper addresses how the fixture design can be used to help the alignment rather than specifics of this exact system design.