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Athermalized Beam Expanders

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Optical Surfaces Ltd.
KENLEY, England, Aug. 16, 2018 — Athermalized beam expanders from Optical Surfaces Ltd. are based upon a Dall-Kirkham off-axis mirror design that incorporates invar elements to provide thermal stabilization. In addition, to better control thermal behavior, the off-axis mirrors in the athermalized beam expanders have a short focal length, resulting in a very robust assembly, which is less sensitive to temperature changes. As a result, high optical performance is maintained over a wide range of temperatures. Benefiting from an off-axis design, the expanders provide an unobstructed output and highly efficient...See full product

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