Abstract

This paper describes the method of fabricating the segments of a paraboloidal mirror, 10 m in aperture and 3.1 in aperture ratio, to be used in a large solar furnace. In order to grind the segments accurately into portions of a paraboloid, an aspherical surface grinder was constructed. The blanks figured were smoothed and polished. The finished surface was aluminized by vacuum evaporation to form a front surface mirror. The accuracy of the surfaces obtained was found to be satisfactory for the present purpose.

© 1964 Optical Society of America

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