Athermalized Beam Expanders

Optical Surfaces Ltd.Request Info
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KENLEY, England, Aug. 21, 2018 — Athermalized Beam ExpandersAthermalized beam expanders from Optical Surfaces Ltd. deliver stable, high performance.

The expanders are based on 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 have a short focal length, resulting in a very robust assembly that is less sensitive to temperature changes. As a result, high optical performance is maintained over a wide temperature range.

Benefiting from an off-axis design, Optical Surfaces athermalized beam expanders provide an unobstructed output and highly efficient transmission. The reflective design of these beam expanders is achromatic and can operate from the UV to FIR without adjustment or internal realignment with aluminium coatings. Each athermalized beam expander is housed in an aluminium housing with provision for fixing to an optical table. Alignment aids are provided to ensure correct beam pointing.

Published: August 2018
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