OPTICAL LENS MACHINE TOOLS NAMELY

Brand	Owner	Address	Description
AO	AMERICAN OPTICAL COMPANY	SOUTHBRIDGE MA	OPTICAL LENS MACHINE TOOLS-NAMELY, LENS DRILLS, LENS CUTTERS, EDGING MACHINES, SURFACING MACHINES, LAP TRUING MACHINES, AND PARTS FOR THE AFORESAID MACHINES;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

At least one exemplary embodiment is directed to a zoom lens system, which can have a diffractive optical element, achieves high optical performance over a wide zoom range. The zoom lens system includes a first lens unit having positive optical power, a second lens unit having negative optical power, and a rear lens component including at least one lens unit having positive optical power. The first lens unit, the second lens unit, and the rear lens component are arranged in that order from an object side towards an image side of the zoom lens system. The diffractive optical element is included in the first lens unit. The rear lens component is provided with a positive lens element having extraordinary dispersion characteristics.