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US 6,146,251 AGranted
Polishing method, method of manufacturing an optical device, and a liquid suspension used for polishing
AssigneeSony Corporation
InventorsTatsuo Fukui, Koichi Tatsuki
Life of this patent
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Abstract
By polishing an optical device such as .beta.-BBO crystals using a liquid suspension comprising a fine powder of silicon oxide and a liquid lubricant of saturated hydrocarbon, satisfactory mirror face polishing can be applied to the optical device, without deteriorating the surface property while reducing occurrence of fine optical defects.
Claims13
A polishing method of polishing an optical surface of optical crystals with a liquid suspension comprising a fine silica powder and a liquid lubricant of saturated hydrocarbon.
A method of manufacturing an optical device comprising:
- a step of cutting out a material used for an optical device into a predetermined shape and
- a step of polishing an optical surface formed by the cutting out step with a liquid suspension comprising a fine powder of silicon oxide and a liquid lubricant of saturated hydrocarbon.
Dependencies are inferred from the claim text.