A Fresnel lens mold is disclosed, comprising stacked bendable strips. An optical structure is provided on one edge of each strip, which is the same as a lens structure on a corresponding endless strip of a Fresnel lens. A manufacturing method for the Fresnel lens mold comprises: designing a Fresnel lens according to an optical characteristic requirement, selecting bendable strips, processing, on one edge of each strip, an optical structure that is the same as a lens structure on a corresponding endless strip of the Fresnel lens, and according to the position of the endless strip of the Fresnel lens and the orientation of the lens structure on the endless strip, stacking the strip on which the optical structure is processed, so as to obtain the Fresnel lens model. Further provided is a method for manufacturing a Fresnel lens by using the foregoing Fresnel lens mold.

A method of forming a mold insert used to produce an intraocular lens (IOL) mold is disclosed herein. The method includes providing stock material and cutting the stock material, which includes multiple cutting steps. The cutting steps are performed on transitional regions of supporting portions of the mold insert. Peripheral surfaces of the mold insert have varying roughness values, and supporting portions of the mold insert have a greater roughness than the optical portion of the mold insert. An IOL is also disclosed herein that is formed using an IOL mold that is injection molded using the mold insert. A method of forming the IOL is also disclosed herein.

There is provided a lens including a first curved surface and a second curved surface. The first curved surface and the second curved surface have different focal distances and are arranged interlacedly along a radial direction of the lens.

A mold element (350) is fabricated (305, 310, 315) using a first mold (5) with which microstructures (323) are integrally formed in relief on the mold element (350). A lens (340) is cast (320, 325, 330, 335) using a second mold (7) that includes the mold element (350) such that the microstructures (337) are integrally formed on the lens (340).

Systems, devices, and methods are disclosed for fabricating a hybrid contact lens product having a lens insert embedded at a precisely controlled location within a lens body. A mold engagement and support base engages and retains a lens forming mold in a substantially fixed position. An insert placement and positioning device includes an insert pickup head with a contact face configured for releasable engagement of the lens insert and at least one suction opening in the contact face for applying suction to engage the insert on the contact face. A positioning housing interacts with the mold and/or the support base to provide precise locational positioning of the lens insert within the mold. A lens body forming material is delivered to the mold to encapsulate the lens insert.

The instant invention pertains to a method and a fluid composition for producing contact lenses with improved lens quality and with increased product yield. The method of the invention involves applying to a molding surface of the mold a layer of mold releasing agent selected from a group consisting of fatty amines of carbon chain length C18 or less and silicones bearing pendant substituted pyrrolidone groups solution to reduce an averaged mold separation force by at least about 50% in comparison with that without the releasing agent.

This invention is directed to a process for applying a symbol to a molded device which symbol on the molded device is visible as an indentation in the surface of the device. The process involves the step of applying the symbol as an elevation to the mold before using the mold for making the molded device. The process of the invention is characterized in that the elevation on the mold is produced by applying a material to the mold surface which material is liquid when being applied and which material is applied at a temperature higher than the temperature which is at or preferably below the melting point of the material, and which material solidifies at the temperature of the mold. The material applied to the mold and solidified on the mold surface as an elevation needs to remain solid during the process of using the mold for making the molded device. During the molding process the elevation of the symbol on the mold is transferred as an indentation of the symbol to the surface of the molded device. After the molding process is complete and the molded device has been separated from the mold the elevation on the mold surface can be removed and the mold can be re-used without an elevation or with another elevation being applied to make another molded device.

A method for determining residual moisture on and/or within a lens forming surface of a mold half includes the steps of carrying out an infrared inspection of at least a central portion of the lens forming surface of the mold half with the aid of an infrared camera, collecting measurement values resulting from the infrared inspection, which represent a degree of residual moisture on and/or within the lens forming surface, comparing the collected measurement values with a predefined threshold value representing a maximum tolerable residual moisture on and/or within a lens forming surface of a reference mold half, and, upon detection of an exceedance of the predefined threshold value representing the maximum tolerable residual moisture, preventing the inspected mold half from being used further.

A method of removing a lens forming material deposited on a lens forming surface (1) of a reusable glass mold for forming ophthalmic lenses, in particular contact lenses or intraocular lenses, comprises the steps of providing a plasma (2), exposing the lens forming surface (1) of the reusable glass mold to the plasma (2) for removing the lens forming material deposited on the lens forming surface (1). The plasma (2) is generated under atmospheric pressure and potential-free, or is generated under reduced pressure.

A method of manufacturing a chip scale light-emitting diode package is provided. The method of manufacturing chip scale light-emitting diode package includes: manufacturing a lens molding sheet including intaglios on one surface thereof; forming a lens layer having lens portions on one surface thereof and a flat surface on a surface opposite thereto by applying a light-transmitting resin to the intaglios; forming an adhesive layer on the flat surface of the lens layer; arranging light-emitting diode chips, each having a first surface and a second surface opposite to the first surface, on the adhesive layer in such a way that the light-emitting diode chips correspond to the lens portions and the second surface is attached to the adhesive layer, wherein a first electrode pad and a second electrode pad are formed on the first surface; and manufacturing a chip array sheet by forming a molding part on the adhesive layer to cover outer surfaces of the light-emitting diode chips.