Request InfoOptical Surfaces Ltd.Variable focus motorized beam expanders from Optical Surfaces Ltd. incorporate off-axis mirrors for unobstructed output and highly efficient transmission. An off-axis reflective beam expander greatly reduces the blind zone of lidar systems and therefore offers the best solution to this problem. In lidar systems, such as Doppler wind lidar, the wavefront performance of the beam expander is important for lidar efficiency. The expanders are portable and can be used without the need for internal realignment.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra February 2022 IssueAthermalized Beam CollimatorOptical Surfaces Ltd. has announced an athermalized beam collimator design to deliver stable, high performance across a wide temperature range. 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