Techniques are described for applying an edge sealant to the edge of a multi-layer optical device. In particular, embodiments provide an apparatus that performs a precision measurement of the perimeter of an eyepiece, applying the edge sealant (e.g., polymer) based on the precision-measured perimeter, and subsequently cures the edge sealant, using ultraviolet (UV) light that is directed at the edge sealant. The curing process may be performed within a short time following the application of the edge sealant, to ensure that any wicking of the edge sealant between the layers of the eyepiece is controlled to be no greater than a particular depth tolerance. In some examples, the edge sealant is applied to the optical device prevent, or at least reduce, the leakage of light from the optical device, and also to ensure and maintain the structure of the multi-layer optical device.

A method for producing a plastic optical fiber including a step of dispersing a pigment in a curable composition containing an active-energy-ray-curable resin and the pigment, and a step of forming a coloring member made from a cured product of the curable composition by applying the curable composition on a peripheral surface of a plastic optical fiber body. The curable composition has a viscosity of 2,000 mPa or more and 3,000 mPa or less at 25° C. In the step of dispersing the pigment, the curable composition is charged into an airtight container having a circular tubular shape with an axis A1 and the airtight container is rotated around the axis A1 intersecting with a vertical line at a circumferential velocity of 0.02 m/sec or more and 0.2 m/sec or less.

The present invention generally relates to a method for applying a coating of hydrophilic polymers onto polyvinylalcohol-based hydrogel contact lenses to improve lubricity. In particular, the present invention is directed to a method for forming a coating on a contact lens, preferably a polyvinylalcohol-based hydrogel contact lens, directly in the primary package and maintaining the coated contact lens within said primary package until insertion of the coated contact lens in the eye of the contact lens user. The resultant polyvinylalcohol-based hydrogel contact lens has a coating with improved lubricity and good durability and also can be used directly from the lens package by a patient without washing and/or rinsing.

Apparatus and methods are described including a progressive lens (20) that is configured to provide a far-vision correction and a near-vision correction. The progressive lens includes a single-focus, far-vision corrective lens (22) that is configured to provide only a portion of the far-vision correction, and a film (24) coupled to the single-focus, far-vision corrective lens (22). The film (24) defines a far-vision corrective portion (26) that is configured to provide the remainder of the far-vision correction, a near-vision corrective portion (28) that is configured to provide additive near-vision correction, and an intermediate portion (30) in which the film transitions between the far-vision corrective portion and the near-vision corrective portion. Other applications are also described.

Examples include a device including a nanovoided polymer element having a first surface and a second surface, a first plurality of electrodes disposed on the first surface, a second plurality of electrodes disposed on the second surface, and a control circuit configured to apply an electrical potential between one or more of the first plurality of electrodes and one or more of the second plurality of electrodes to induce a physical deformation of the nanovoided polymer element.

An ophthalmic substrate conveyor and method of conveying ophthalmic substrates for vacuum deposition utilizes gravity and impulse action energy to convey an ophthalmic substrate to an adjacent vacuum deposition machine, for coating the ophthalmic substrate with an ophthalmic substance through physical vapor deposition. The conveyor provides a spring-loaded lens wheel that selectively retains the ophthalmic substrate during coating. The lens wheel rides a pair of inclined rails, urged by gravity, to a vacuum deposition machine that coats HEV absorbing material onto ophthalmic substrate. An escapement mechanism subassembly transfers impulse action energy to the lens wheel to regulate the speed and direction of the lens wheel across the inclined rails. A rotation servomechanism senses and rotates the lens wheel to the desired orientation during coating. A ring spreader actuator engages springs in the lens wheel to clamp and release the ophthalmic substrate. A control unit regulates servomechanism and ring spreader actuator.

A method of producing a medical device having a substrate and a hydrophilic polymer layer, including the steps of: pretreating the substrate by placing the substrate in an alkali solution and heating the substrate at a temperature ranging from 50° C. to 100° C.; and heating a solution containing the pretreated substrate, a hydrophilic polymer having an acidic group and a hydroxyalkyl group, and an organic acid at a temperature ranging from 50° C. to 100° C. Provided is a simple method of producing a medical device imparted with hydrophilicity excellent in durability.

An antiglare film includes, in order: a substrate; a first layer; and a second layer with an uneven structure including elongated projection portions on a surface opposite to a substrate side and an arithmetic mean height Sa on that side of the substrate is 30 to 160 nm, an average distance between adjacent elongated projection portions is 5 to 80 μm, a content of particles having a particle diameter of 300 nm or more in the second layer is 0% to 0.1% by mass with respect to a total mass of the second layer, an average film thickness of the second layer is 0.3 to 3 μm, a haze of the antiglare film is 1% to 20%, and where a surface of the antiglare film on the opposite to the substrate side is rubbed 100 times with #0000 steel wool under a load of 1 kg/cm.sup.2, no scratch occurs.

An optical fiber mold device has a first portion that includes a base layer having a longitudinal feature configured to receive an optical fiber. At least one second portion is disposed over the base layer. The second portion has a center wall and front and back end walls. The center wall, the front end wall, and the back end wall form a mold cavity. At least one first hole is disposed in the mold cavity and is configured to allow mold material to enter the mold cavity. At least one second hole in the mold cavity is configured to allow air displaced by the mold material to exit the mold cavity.

The present disclosure relates to a method for producing an optical element, for example a lens, for example a headlight lens, for example for vehicle headlights or motor vehicle headlights, wherein an optical component part having an (optically effective) convex surface made of a first transparent optical material is provided and/or produced; a mold having a concave cavity and optical material is provided and/or produced; liquid transparent second optical material is placed into the concave cavity of the mold; and the optical component part having the convexly curved surface is pressed into the concave cavity of the mold such that an optically effective coating is formed on the convexly curved surface.