Beam expanders thorlabs galilean type beam expanders which are available in both fixed and variable magnification options are offered for use in the uv visible near infrared and mid infrared spectral ranges. Thorlabs be03m optical laser ar coated 400 650nm variable 3x beam expander this offer only comes with what is pictured or listed in the description. The gbe05 a from thorlabs inc is a beam expander with wavelength 400 to 650 nm beam expander diameter enterance beam diameter.
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