METHOD OF ABRASIVE TREATMENT OF METAL OPTICAL MIRRORS Russian patent published in 2004 - IPC

FIELD: optical instrumentation engineering; treatment of precision spherical surfaces of metal optical mirrors-magnets for electronic and optical devices. SUBSTANCE: proposed method includes treatment of blank, performing molding operations including grinding of spherical surface by means of tool with secured abrasive, grinding of spherical surface by means of grinding tools and loose abrasive at reducing size of grain and polishing. Tool made from diamond micropowder on base of organic binder is used for grinding spherical surface by means of tool with secured abrasive. Grinding with loose abrasive is performed at two passes by loose lap at self-setting of lapping surfaces. Loose abrasive is multi-component grinding mixture at increased concentration of abrasive. Polishing is performed by means of polishing tools at hard resin backing with use of sub-micro-powders at high hardness. EFFECT: enhanced accuracy; improved quality; increased productivity; low cost of manufacture. 5 cl, 5 dwg