Thin Optics: Mark Optics manufacturers the thinnest optical substrates, wafers and thin coverslips. Our unique processing capabilities allow us to continue to challenge the physical limitations of thinning wafers. We have successfully polished 1 glass wafers to thicknesses of 25 micron (0.001) and are working on achieving 15 microns (0.0006). When necessary, TTV and parallelism can be controlled to +/- 5 microns (0.0002) or better. We have successfully polished 100mm round wafers to 50 micron thicknesses out of fused silica and Schott Borofloat 33 materials. We are able to polish different shaped substrates as well (squares, hexagons, rectangles etc.). We are here to work with your engineers on these challenging substrates. Mark Optics is a world-class manufacturer of quartz and glass optical components. We make custom precision optics that create substantial value to our customers. We offer full, in-house, production capabilities from ingot slicing, coring, CNC machining and shaping, and finally, planetary lapping and polishing of finished optics. Our highly skilled and cross-trained craftsmen are ready to provide a variety of engineering solutions. We invite you to experience our helpful customer service representatives, quality products and on time delivery.