Business machines accounted for 81.3 percent of net sales as demand for cameras and other optical products slipped, it said.

Simmons Optics, a line of rifle scopes, binoculars, and other optical products.

Things made in the area include electrical equipment, mechanical and optical products, motor vehicles, and printed materials.

The gems, frequently used for cutting tools, also have vast potential in the fields of semiconductors, heat-transfer material and optical products.

Sunagor is a Japanese manufacturer and brand of optical products, founded in 1948.

The Dollonds became quite famous for the quality of his optical products.

Optiscan Imaging is a company based in Australia that focuses on research and development of optical products for medical use.

There is also another well-known company with the differently spelled name Canon, which specialises in imaging and optical products.

The company still specializes in optical, electro-optical and optical-mechanic products.

By the end of this decade, Essilor would become the world's leading manufacturer in ophthalmic optical products.