Polishing is an important processing method in the fabrication of the following devices:
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Passive optical devices: lens and prisms of various sizes, polarizer, and wave-length constant
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Active optical devices: solid-state laser rod, optical deflector, and electro-optic modulator
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Piezoelectric devices: quartz oscillator and filter
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Semiconductor devices: LSI, the magnetic devices as magnetic memory head and magnetic bubble memory
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Mechanical devices: ceramic plate and ball, etc.