Category : Optics (components, coatings, instruments and systems) > Optical instrumentation, systems and accessories

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The LTHR is perfect for folding parallel light 180º degrees and displacing it any given distance. This device is virtually a segment of a perfect Hollow retroreflector, and therefore operates as an invariant. In applications where the LTHR is vibrated, the exiting beam remains static and maintains perfect parallelism with the entrance beam. The beam deviation can be as accurate as one arc second. The LTHR provides a perfect solution for a "U" fold in a large size Michelson interferometer, or in a back to back retroreflector configuration for folding interferometers. The LTHR is also useful when the flat mirror is made as a 50/50 beamsplitter. This configuration enables the user to observe the view ahead, while simultaneously viewing another parallel optical axis. In addition, the LTHR is extremely temperature stable because all component parts have the same coefficient of thermal expansion (CTE).

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List of all articles in this sub-category Optical instrumentation, systems and accessories

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