The invention provides a method for manufacturing an ophthalmic article having at least one optical function and at least one predetermined transmission parameter, comprising the steps (102) of surfacing at least a first face of a first body of said article, made from a first material, according to a first geometry determined for providing said predetermined transmission parameters; and surfacing (103) at least a second face of a second body of said article, made from a second material, according to a second geometry determined at least according to said first geometry, for providing said optical.

An optical element including a first substrate, a second substrate, a first optical film, a second optical film, and a spacer is provided. The first optical film is disposed on the first substrate and has a first surface and a plurality of first optical microstructures. The first optical microstructures are disposed on the first surface. The second optical film is disposed on the second substrate and has a second surface and a plurality of second optical microstructures. The second surface is opposite to the first surface. The second optical microstructures are disposed on the second surface. The orthogonal projection of the first optical microstructures on the first substrate does not overlap with the orthogonal projection of the second optical microstructures on the first substrate. The spacer is disposed between the first substrate and the second substrate. A wafer level optical module adopting the optical element is also provided.

An optical element including a substrate, a first optical film and a second optical film. The first optical film and the second optical film are disposed on at least one side of the substrate and are both formed on the substrate. The first optical film has a first surface facing away from the substrate and a plurality of first optical microstructures disposed on the first surface. The second optical film has a second surface facing away from the substrate and a plurality of second optical microstructures disposed on the second surface. The orthogonal projection of the first optical microstructures on the substrate does not overlap the orthogonal projection of the second optical microstructures on the substrate. A wafer level optical module adopting the optical element is also provided.

The invention described in the present specification relates to a color conversion film including a resin matrix; and an organic fluorescent substance dispersed in the resin matrix, wherein the organic fluorescent substance includes a green fluorescent substance having a maximum light emission wavelength in a 510 nm to 560 nm range when irradiating light including a 450 nm wavelength, and a red fluorescent substance having a maximum light emission wavelength in a 600 nm to 660 nm range when irradiating light including a 450 nm wavelength, the green fluorescent substance and the red fluorescent substance have a molar ratio of 5:1 to 50:1, and the color conversion film has a light emission peak with a full width at half maximum (FWHM) of 50 nm or less in a 510 nm to 560 nm range and a light emission peak with a FWHM of 90 nm or less in a 600 nm to 660 nm range when irradiating light, a method for preparing the same, and a backlight unit including the color conversion film.

Disclosed is a method for manufacturing a visibility improvement sheet that comprises light absorbing portions having a substantially rectangular cross-section and can realize a high contrast while maintaining a view angle. The visibility improvement sheet is manufactured by forming light transparent portions juxtaposed to each other at predetermined intervals to form grooves having a substantially rectangular cross section juxtaposed to each other between the light transparent portions, filling the grooves with an ink composition comprising a transparent ionizing radiation curable resin composition and colored fine particles, and curing the ink composition in such a state that fine air bubbles are randomly dispersed in the filled ink composition.

A filter, having a first filter material and second filter material, the first and second filter materials having different light attenuation properties and being in mutual contact along an interface surface, a cross-section of which has a curved line. Additionally, a method for preparing a filter, by: combining a first surface and an element to form a moulding cavity, delimited by the surface and by a moulding surface of the element; inserting a first material in liquid state; allowing the first material to solidify; removing the element to form a second moulding cavity, delimited by a second part of the surface and by the solidified first material; and inserting a second material in the second moulding cavity.

A method for manufacturing an optical article, such as an ophthalmic lens, with both photochromic and ultraviolet protecting properties, and to an optical article with said properties.

An optical arrangement for a camera module with an image sensor is provided. The optical arrangement includes optical components having a transparent cover element; an infrared absorbing cut-off filter; and an optical lens. The optical components are arranged, along an incident optical beam path going through the optical components onto the image sensor, in a sequence through the transparent cover element, then the infrared absorbing cut-off filter, and then the optical lens.

A curved lens protector can include a transparent body having a self-supporting x-y axis curve with a concave inner surface and a convex outer surface opposite the inner surface. The transparent body can have an outer boundary of a predetermined shape to substantially match and fit with respect to an inner boundary of a lens holder portion of a predetermined lens frame. The transparent body can be configured for attachment to a predetermined curved lens without the use of an adhesive.

Disclosed is a method for manufacturing an ophthalmic lens including a substrate and a functional film securely fastened to a curved face of the substrate. This method includes a method for gluing the initially flat functional film to the curved face. To ensure that the functional film when securely fastened to the curved face filters a preset band of wavelengths centered on a wavelength denoted λp, multiple functional films are preselected; two knowledge bases are established experimentally; a film is selected, using the two knowledge bases, from the plurality of preselected films, the wavelength λi′ on which is centered the band of wavelengths that this film filters for a certain degree of deformation being equal to λp when the degree of deformation is that given for the curvature in question; and the gluing method is implemented in order to securely fasten the selected film to the curved face.