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  • Microlux Alumina Polishing Powders
Jan 2014
Meller Optics Inc.Request Info
PROVIDENCE, R.I., Jan. 16, 2014 — Meller Optics Inc. has introduced Microlux high-purity calcined alumina polishing powders that can be mixed with deionized water for grinding, lapping and finishing a variety of optics.

The powders are available in two grades and seven particle sizes from 0.05 to 3 µm, and can produce surface finishes to 10-5 scratch-dig. They are suitable for hard and soft optics, including barium and calcium fluoride, germanium, silicon, zinc selenide, zinc sulfide, stainless steel and semisoft crystalline materials.


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barium fluoride
A relatively hard crystal, highly resistant to excessive energy radiation, that is frequently used for optical windows, prisms and lenses transmitting from the vacuum UV into the IR.
calcium fluoride
An optical material used in place of crown glass to produce lenses with extraordinary correction of chromatic aberrations. Its high coefficient of thermal expansion and its tendency to absorb moisture limit its range of application.
A crystalline semiconductor material that transmits in the infrared.
The process in the manufacture of an optical system that gives it the required geometric shape.
1. The process of wearing down the surface of a softer material by rubbing it under pressure against the surface of a harder material that has been formed in the shape opposite to that desired on the softer material. Loose, wet abrasive generally is used between the two parts, but sometimes the abrasive is embedded in the lap in a rigid form (see diamond cutting tool). 2. See fiber lapping.
The optical process, following grinding, that puts a highly finished, smooth and apparently amorphous surface on a lens or a mirror.
zinc sulfide
A polycrystalline material that transmits in the infrared; it is used as a phosphor in x-ray and television screens.
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