An optical lens 11, which has a lens section with a refractive power, has concave marks 33, 35, 37, and 39 which are formed to be recessed on a surface of the lens section, in an effective optical lens surface which contributes to image forming of the lens section. A width of each of these concave marks 33, 35, 37, and 39 is equal to or greater than 0.05 m and equal to or less than 14 m, and a depth of recession of each concave mark is equal to or greater than 0.05 m and equal to or less than 5 m.

A manufacturing method for a mold die comprising: making design data for a molding surface based on predetermined prescription information; creating the molding surface in accordance with the design data; specifying error amounts at first and second corresponding points defined on the created molding surface respectively corresponding first and second reference points; defining a first correction surface based on an error amount specified at the first corresponding point; of defining a second correction surface based on the first correction surface and an error amount specified at the second corresponding point, wherein the second correction surface has no power at the first corresponding point; combining a design surface by the design data, the first correction surface and the second correction surface, and corrects the design data based on combined data after the combining; and creating the molding surface in accordance with the corrected design data.

Ophthalmic lenses and method of manufacturing ophthalmic lenses that include automated steps are disclosed.

A manufacturing method of a lens assembly includes heating the first lens and softening the first lens; and pressing the softened first lens to the second lens, bonding the first face with the second face, and hot melt connecting the first connection portion with the second connection portion. The beneficial effect of the present application is to improve the accuracy of the first laminating surface being affixed to the second laminating surface, and to improve the imaging effect of the lens assembly.

An inkjet printing apparatus includes: a stage, which reciprocates in forward and reverse directions opposite to each other and has a target substrate disposed thereon; an inspection device including a film disposed outside the stage and a measurement unit which measures an inspection pattern provided on the film; and a head assembly, which moves along one direction crossing the forward direction and has a plurality of heads which supplies a liquid composition to the target substrate. The head assembly moves in the one direction to overlap the film and sprays the composition onto the film to form an inspection pattern.

A method and a device for producing a lens wafer which has a plurality of microlenses, as well as microlenses produced from the lens wafer.

An aspect of the present invention relates to a method of manufacturing an eyeglass lens, comprising determining a manufacturing condition by a method of determining a manufacturing condition of an eyeglass lens comprising a vapor-deposited film formed by vapor deposition using a vapor deposition source the main component of which is ZrO.sub.2, and forming a vapor-deposited film by vapor deposition using a vapor deposition source the main component of which is ZrO.sub.2 under the manufacturing condition that has been determined.

A method and a device for producing a lens wafer which has a plurality of microlenses, as well as microlenses produced from the lens wafer.

There is described a process for manufacturing an ophthalmic lens and an apparatus for forming an ophthalmic lens, in particular a silicone hydrogel contact lens, wherein in a mold assembly a first and a second mold half (101, 102) are first arranged in an intermediate closed position in which the mold surfaces of the two mold halves are spaced apart from each other at a distance increase (d1) of preferably 1 to 100 m relative to a final distance (d0) in a final closed position, and wherein, during curing of the lens forming material (202), the mold surfaces (105, 106) of the mold halves (101, 102) are actively or passively moved or moving from the intermediate closed position to the final closed position, where the distance increase (d1) is 0.

The invention relates to a print head for printing optical structures on a substrate comprising an ejection device for ejecting at least one droplet of a printing ink towards the substrate in order to build up the optical structure, wherein the print head comprises a measurement means for contactless measuring at least one physical parameter of the at least one deposited droplet.