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  • Lapping/Polishing Machine

Photonics Spectra
Aug 2010
Engis UK Ltd.Request Info
Engis (UK) Ltd. has unveiled a benchtop four-way, double-sided lapping and polishing machine, suited to research applications and short production runs in precision optical and small component manufacturing. The Engis 432 planetary machine is very flexible, lapping most precision optics and advanced materials, including sapphire, GaN, SiC and other optical materials, and can be operated in unmanned mode, either timed or thickness-controlled, if required, while still maintaining its accuracy and repeatability. Despite its compact size, it can accommodate components measuring up to 55 mm in diameter, with 18-mm maximum thickness, making it capable of producing a wide range of precision components. Available accessories include cast iron lap plates, stainless steel plates for pad polishing, composite metal diamond polishing plates, an abrasive lapping slurry pump and a diamond dispensing system.


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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.
Pertaining to optics and the phenomena of light.
The optical process, following grinding, that puts a highly finished, smooth and apparently amorphous surface on a lens or a mirror.
The degree to which a predetermined or previous setting of a positioning device can be duplicated by observance of the optical phenomena.
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