Patent classifications
B29D11/00923
AN OPHTHALMIC LENS FOR IMPROVING NIGHT DRIVING VISION AND A METHOD FOR OBTAINING THE SAME
This ophthalmic lens has a front face and a rear face, and has: a light cut factor CutLED of at least 20% for wavelengths ranging from 380 nm to 500 nm, CutLED being defined by:
Method for preparing an optical element which colors in a non-uniform linear pattern
A method for preparing an optical element which colors in a non-uniform linear pattern is provided. The method includes (I) providing an optical element which previously has been treated with a photochromic composition containing at least one first photochromic material, the photochromic composition having an absorbance spectrum in the region of photochromic activation; (II) preparing at least one light-absorbing composition containing ultraviolet light absorber, a second photochromic material which is the same or different than the first photochromic material, or mixtures thereof, where the light-absorbing composition has an absorbance spectrum overlapping with that of the photochromic composition in the region of photochromic activation; (III) depositing the light-absorbing composition over the surface of the photochromic optical element in a controlled, predetermined pattern using an inkjet printing apparatus to provide a linearly gradient color pattern upon exposure to actinic radiation; (IV) and drying the composition. An optical element also is provided.
METHOD FOR MAKING A GRADIENT COLOR POLAR LENS WITH A NON-POLAR NEAR VISION ZONE
Disclosed are methods for preparing partially polarized optical articles. A polarizing element is used to cover at least a portion of the front surface of an optical article to form a polarizing zone and a non-polarizing zone on the optical article. The optical article is then tinted to produce a gradual color transition between the polarizing zone and non-polarizing zone of the optical article.
Optical element and method of producing optical element
The present invention relates to an optical element including a base material, a light-shielding film, and a cured film in which an alkyd resin and a melamine resin having two or more iminomethylol groups in a molecule are condensed or in which an alkyd resin and a benzoguanamine resin having two or more iminomethylol groups in a molecule are condensed. The light-shielding film is disposed in at least a part of the periphery of the base material. The cured film is disposed on the surface of the light-shielding film.
Methods of forming contact lenses to reduce the transmittance of light
A method of preparing and using a contact lens is disclosed. In one step, a light-absorbing dye solution, comprising a light-absorbing dye disposed in a solution, is dispensed onto a contact lens. In another step, the light-absorbing dye is reacted with the contact lens so that the contact lens permanently contains the light-absorbing dye. The transmission of light of a certain wavelength through the contact lens is reduced due to the reacted light-absorbing dye permanently contained within the contact lens.
COLOR-BALANCED LENSES EXHIBITING REDUCED BLUE LIGHT TRANSMITTANCE
The object of this invention is to provide optical articles having one or more transmittance-attenuating dyes. Each dye attenuates transmission of a certain wavelength range. Different dyes can be combined in different concentrations to tune the transmittance spectrum through a lens. The transmittance-attenuating dyes can be incorporated into different optical articles using different production methods.
LIFT-OFF METHOD BY MEANS OF JETTING
A method for structured coating of a surface of a substrate. The surface includes spaced optical elements and at least partially metallic elements provided adjacent the optical elements. After the application of the method, the optical elements should be completely covered with the coating, whereas at least some of the metallic elements should not be coated on the major part of their surface. The method includes: a) providing the substrate with the spaced optical elements and metallic elements; b) applying a sacrificial material to at least some of the metallic elements to form sacrificial spots; c) coating the surface of the substrate with a layer system; and d) detaching the sacrificial spots from the substrate, wherein the regions of the layer system on the sacrificial spots are also detached from the substrate. The application of the sacrificial material is carried out at least partially by jetting.
SMALL CAMERA LENS WITH IMPROVED INTERNAL REFLECTION
Disclosed herein is a method for manufacturing a lens used for a camera, comprising forming a coating layer, by laminating at least one dielectric layer on an effective aperture portion of each of both surfaces of the lens, wherein the lens comprises the effective aperture portion, a flange portion and an outer aperture portion, and forming a colored layer, inside the surface of the lens, on at least a portion of the surface of the lens except the effective aperture portion on which the coating layer of the lens is formed, by making a black colored dye permeate through the pores of the surface after heating the lens to a temperature higher than a first temperature, and permeating the dye into the interior of the surface of the lens for coloring by lowering the temperature below the first temperature.
Colored contact lens based on amorphous images
A method of manufacturing a colored contact lens including the steps of providing a transparent contact lens having a pupil section and an iris section, the iris section surrounding the pupil section and applying a colorant to the surface of the contact lens. The colorant is applied to the contact lens as an amorphous pattern and covers an effective amount of the iris section of the same. The amorphous pattern provides a lens capable of changing the apparent color of the iris of a person wearing the lens while imparting a very natural appearance.
Method for coloring an optical element in a non-uniform linear pattern
A method for coloring an optical element in a non-uniform linear pattern is provided. The method includes (a) preparing at least one colorant composition containing at least one photochromic material; (b) depositing the colorant composition on at least one surface of the optical element in a controlled, predetermined pattern using an inkjet printing apparatus to provide a linearly gradient color pattern on the optical element when the optical element is exposed to actinic radiation; and (c) drying the colorant composition on the surface of the optical element. An optical element prepared by the method also is provided.