Meadowlark Optics, Precision Retarder, 1 In. Diameter, 1/4 Wave (nq-100-0633)

US $2500

  • Albuquerque, New Mexico, United States
  • May 31st
Condition: These unmounted quarter wave retarders were purchased new in 2011 and have never been opened.  They remain in their original packaging, as received (see pictures) Quantity:  You are bidding on one unmounted quarter-wave retarder. Original Cost: $475.00 A quarter-wave retarder is used to convert light between circular and linear polarization forms. It changes linearly polarized light to circularly polarized light, when the angle between the input polarization and the retarder fast axis is 45°. Part Number: NQ-100-0633 Retarder Material Birefringent Polymer Substrate Material BK 7 Grade A, fine annealed Wavelength 632.8 nm Retardance Lambda/4 +/- Lambda/350 Wavefront Distortion <= Lambda/5 (transmitted, at 632.8 nm) Surface Quality 40-20 scratch and dig Beam Deviation <= 1 arc min Outside Diameter 1.000 +0/-0.010 in. Clear Aperture Central 0.80 in. diameter Outside surfaces antireflection coated to provide R <= 0.5% per surface at normal incidence over 400-700 nm

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