With a 20 percent share of the market, Sola is the second-largest American lens maker.

He worked as a lens maker.

The department's action also follows a request from the Contact Lens Institute, which represents the nation's biggest lens makers.

Lately lens makers have even stopped putting depth-of-field scales on their products, figuring that nobody knows what they are.

Photographic lens makers provided slots in lens barrels for the insertion of the chosen stop.

This design was quickly copied by other lens makers.

Traditionally, lens makers like to mark the location of the company conspicuously on their lenses.

The lens maker was allegedly contracted to make some of the litho equipment for the upcoming 22nm transition.

But most other big lens makers say they plan to introduce their own versions.

This was a design triumph for Canon that no other camera or lens maker was able to do back in 1970.