Provided is an optical apparatus including: an optical member; a focus motor configured to move the optical member; a lens CPU configured to control the focus motor; an MF ring including a reflection portion and a low reflection portion having a reflectance lower than a reflectance of the reflection portion, and a photo-reflector configured to receive light reflected by the reflection portion, wherein the lens CPU is configured to control the focus motor based on output from the photo-reflector, and the reflection portion has conductivity.

According to some exemplary embodiments of the present disclosure, provided is a lens for providing varifocal focus. The lens for providing the varifocal focus may include: a liquid crystal layer that is variably oriented according to a voltage to have a variable refractive index; a first lens-shaped optical unit including a first optical layer having one side in contact with one side of the liquid crystal layer and a second optical layer having one side in contact with the other side of the liquid crystal layer; and a second lens-shaped optical unit made of a polymer series, having a fixed refractive index, and including a third optical layer having one side in contact with an outer surface of the first optical layer and a fourth optical layer having one side in contact with an outer surface of the second optical layer.

A method of forming an ophthalmic laminate lens, includes: forming a planar laminate (100) by adhering a first stretched polymer layer (115) to a first side of a thermoplastic elastomer layer (120), and adhering a second polymer layer (125) to a second side of the thermoplastic elastomer layer (120), the first stretched polymer layer (115) having a thickness greater than 250 μm, the second polymer layer (125) having a thickness greater than 250 μm, and the thermoplastic elastomer layer (120) having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate (100) into a curved laminate (105), the curve laminate (105) having a pre-molding curvature; arranging the curved laminate(105) in a mold (145a); and molding, via the mold set (145a, 145b) at a predetermined temperature and a predetermined pressure, the curved laminate (105) with a polymer melt (140) into a curved lens, wherein a temperature of the polymer melt (140) is above a stretch temperature of the first stretched polymer layer (115).

The invention relates to an optical article comprising a base lens substrate having a at least one or a plurality of optical elements such as microlenses, a Fresnel structures, etc protruding from a surface thereof, and a hard coat covering encapsulating each optical elements. More particular it relates to an optical article comprising: a base lens substrate having opposing first and second lens surfaces; a protective layer having opposing first and second protective surfaces and a maximum thickness, measured in a direction perpendicular to the first protective surface between the first and second protective surfaces, the first protective surface disposed on the second lens surface; and at least one or a plurality of optical elements, each: defining a portion of one of the first protective surface and the second lens surface; having a maximum height, measured in a direction perpendicular to the second lens surface carrying them, that is less than or equal to 0.1 millimeters (mm) and a diameter that is less than or equal to 2.0 mm. wherein the protective layer is composed of a crosslinked matrix and nanoparticles and the index nc of said protective layer is lower than the index nm of the at least one or each optical element such that the difference nm−nc is greater than 0.045, preferably greater than 0.10, or even greater than 0.15; and wherein the maximum thickness of the protective layer is at least 2 times, preferably at least 5 times of the maximum height of the at least one or each of the optical elements. The invention also relates to the method for forming such optical articles, typically comprising an inkjet step.

A spectacle lens has on at least one surface thereof at least two coatings modified to exhibit an antibacterial effect and/or an antiviral effect. A method of making such a spectacle lens includes dispersing at least one biocidal component in a solvent and/or dissolving at least one biocidal component in a solvent, the dispersed at least one biocidal component and the dissolved at least one biocidal component being different from each other.

A method for injection molding of a plus power lens element comprises injecting a melt of thermoplastic material comprising at least one UV absorber at a temperature higher than a glass transition temperature (Tg) of the thermoplastic material in an initial molding cavity delimited by two facing mold inserts. During the injecting, the two facing mold inserts are moved toward one another to define a final molding cavity whose volume is less than that of the initial molding cavity. After cooling and opening of the mold cavity, the plus power lens element is recovered. One of the two facing mold inserts comprises a flat surface facing the initial molding cavity, thereby to form a flat surface on one side of the plus power lens element, and the other of the two facing mold inserts comprises a concave surface facing the initial molding cavity, thereby to form a convex surface on an opposite side of the plus power lens element.

The present disclosure relates to an ophthalmic lens treatment method, comprising heating, in a humidified environment, a semi-finished lens (20) to a predetermined temperature, the semi-finished lens (20) containing a base lens (10) and a film structure (2) of a predetermined thickness, and surfacing the semi-finished lens (20) to a predetermined power, wherein the predetermin ed temperature is a temperature above a softening temperature of the film structure (2), the humidity of the humidified environment is between 30% and 99% and the predetermined thickness of the film structure (2) is between 200 .Math.m and 800 pm.

A method implemented by computer for processing an unfinished optical lens member for manufacturing an optical lens, the unfinished optical lens member having an unfinished surface and an aspherical finished surface having a first reference system with a first reference point, and the optical lens to be manufactured including first and second surfaces, the first surface including a second reference system with a second reference point and included in the aspherical finished surface of the lens member, the method including: providing an unfinished optical lens member data; providing an optical function; providing a reference point position; providing an optical lens parameter; determining a reference system; determining a first surface dataset; and determining a second surface dataset.

A set includes a molding device having a molding face having the same shape as a contact face of the blocking device. A removable overlay of rigid material has a first face attached to a first face of the semi-finished optical element and a second face opposite to the first face having the same shape as the contact face of the blocking device, the set being configured for having a first subset configuration in which the second face of the removable overlay is in molding contact with the molding face of the molding device, then a second subset configuration in which the second face of the removable overlay is free and then a third subset configuration in which the second face of the removable overlay is retained in contact with the contact face of the blocking device.

The present disclosure includes optical articles comprising a lens having first and second lens surfaces and a protective layer having first and second protective surfaces that is coupled to the lens such that the first protective surface is disposed on the second lens surface. The optical article can comprise a plurality of convex or concave optical elements defined on the second lens surface or the first protective surface. The protective layer can have a maximum thickness larger than a maximum height of each of the optical elements such that the protective layer encapsulates the optical elements.