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Polishing

Precision polishing for various optical materials

Polishing is a process to achieve high accuracy of specifications in prisms or mirrors processed by grinding. It is an important step finalizing the configuration accuracy of the product. Processing facilities and measuring equipment along with skilled craftsmen allows NITTO OPTICAL to polish at world's highest level.

Prism Polishing

NITTO OPTICAL has Oscar polishers, double side polishers, planetary polishers for precise polishing, diamond polishers, and super large polishers of which there are said to be only a few worldwide. Polishing size capability ranges from 1mm or less to 3,000mm or more.

Imagine an area with diameter 300km (e.g. Tokyo area) as a perfect surface. NITTO OPTICAL polishing irregularity tolerance will be the size of a ping-pong ball. NITTO OPTICAL continues to pursue perfect surface.

Materials such as various optical glass, crystal quartz, CaF2 (calcium fluoride) and various ceramics can be polished.

When measuring accuracy, NITTO OPTICAL uses various measuring instruments such as ZYGO interferometers (4",12",32") for surface flatness, 3D measurement devices for dimensions, and high-precision angle measuring instruments (0.1"resolution accuracy) for angles, and surface roughness measuring instruments.

Polishing Machines



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