Precision optics such as lenses, mirrors, and prisms are frequently manufactured using lapping machines for optical flats. Lapping and polishing aid to remove surface flaws and increase the flatness and smoothness of the optical surface, which improves the completed product's optical performance.
Lapping machine for optical flats is a machine that is used to grind and polish flat optical surfaces to a high degree of accuracy and smoothness. Typically, the machine is made up of two revolving plates, one having a flat surface and the other with a slightly convex or concave surface. The two plates are joined by a thin layer of abrasive material, and the upper plate is rotated in a circular motion while exerting pressure on the optical flat to be polished.
In the lapping process, abrasive material such as diamond powder or silicon carbide is mixed with a lubricant such as oil or water to generate a slurry. During the grinding and polishing process, the slurry keeps the optical flat from overheating.