GRINDING OPTICAL LENSES PRESCRIPTION

Brand	Owner	Address	Description
EYELAB	INDIVINED B.V.	KABELWEG 37, P.O.BOX 58002 AMSTERDAM 1040H0 Netherlands	GRINDING OPTICAL LENSES TO PRESCRIPTION;RETAIL STORE SERVICES FOR EYEGLASS FRAMES AND EYEWEAR;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An optical system includes a pair of adjacent cylindrical lenses and a target positioned in a round-spot plane following the pair of cylindrical lenses. At least one of the cylindrical lenses is rotatable about the optical axis, relative to the other cylindrical lens. A collimated light beam is incident on the pair of cylindrical lenses. Rotating the cylindrical lenses relative to each other allows changing the size of a round spot (or symmetrically scaling an image) at a given target location. Additional optical elements, for example a spherical lens, may be placed after the pair of cylindrical lenses. In various embodiments, the pair of cylindrical lenses may include two positive lenses, or a positive and a negative lens.