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Ultraprecision grinding of optical glasses to produce super-smooth surfaces 1.90 y.Namba, m.Abe, chubu universityijapan - submitted by a.Kobayashi 1 received on january 15,1993 summary the typical 11 kinds of optical glasses have been ground by the ultra-precision surface grinder having a glass-ceramic spindle of extremely-low thermal espansion with various cup-typed resinoid-bonded.