43 results about "High-energy visible light" patented technology

The present invention relates to ophthalmic and non-ophthalmic systems with blue light filtering and Yellowness Index ranges. UV and IR filtering are also included. Industrial applications are also outlined in the invention.

A photochromic melanin-containing optical plate is described. The plate has a lamination structure comprising one or two functional film layers containing photochromic compounds and melanin pigments. The photochromic melanin-containing optical plate absorbs high-energy visible-light while indoor and darkens to a sunscreen while outdoors. The plate can be advantageously used in eyewear optical articles such as ski goggles, sunscreen lenses, eyewear lenses, etc.

The present invention relates to ophthalmic and non-ophthalmic systems with blue light filtering and Yellowness Index ranges. UV and IR filtering are also included. Industrial applications are also outlined in the invention.

The invention discloses a transparent plasticized PVC (Polyvinyl Chloride) functional film which has the characteristic of selective transmittance and absorption of solar spectrums and has the function of effectively shielding ultraviolet light, infrared light and high-energy visible light, namely, blue light and the like. Meanwhile, the invention further provides a preparation method for the transparent plasticized PVC functional film; the preparation method is convenient in operation and stable in product performance. The transparent plasticized PVC functional film is prepared from the following raw materials in parts by weight: 100 parts of PVC resin, 60-70 parts of plasticizer, 1.2-1.8 parts of thermal stabilizer, 0.4-0.6 part of ultraviolet absorber, 1.2-6.0 parts of pigment master batch, 0.2-20 parts of surface modified metallic oxide and 0.5-0.8 part of lubricating agent.

The invention discloses an inflaming-retarding transparent plasticized PVC (Polyvinyl Chloride) functional thin film and a preparation method. The inflaming-retarding transparent plasticized PVC functional thin film has the characteristics of selectively transmitting and absorbing a solar spectrum and multiple functions of efficiently shielding ultraviolet rays, infrared rays, energetic visible light-blue light and the like. The inflaming-retarding transparent plasticized PVC functional thin film has an average shielding rate, which is up to 99 percent or above, in a 200nm to 400nm of ultraviolet waveband and an average inhibition rate, which is up to 99 percent or above, for 400nm to 500nm of the energetic visible light (blue light), and meanwhile, has a limit oxygen index which is more than 30 percent. The inflaming-retarding transparent plasticized PVC functional thin film provided by the invention is prepared from the following raw materials by mass: 100 parts of PVC resin, 60 to 70 parts of compound plasticizer, 2 parts of compound heat stabilizer, 0.1 to 1 part of compound light stabilizer, 0.1 to 0.5 part of functional pigment and 0.5 to 1 part of surface graft-modified metallic oxide.

The invention discloses an amorphous transparent PETG (Polyethylene Terephthalate Glycol) copolyester functional thin film. The multi-functional transparent PETG thin film can efficiently shield ultraviolet ray, infrared ray, high-energy visible light-blue light and the like. Meanwhile, the invention also provides a preparation method of the amorphous transparent PETG copolyester functional thin film. The preparation method is convenient to operate, and the product has stable performance. The amorphous transparent PETG copolyester functional thin film is prepared from the following raw materials in parts by mass: 100 parts of PETG resin, 0.3-0.6 part of ultraviolet absorbent, 0.005-0.020 part of paint, 0.5-1.0 part of modified metal oxide, 0.1-0.3 part of antioxidant and 0.3-0.6 part of lubricant.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

The invention provides a composition for resisting high energy visible light and repairing damage caused by high energy visible light. The composition comprises titanium dioxide and a composition forrepairing damage caused by high energy visible light, wherein the composition for repairing damage caused by high energy visible light comprises a cranberry extract, a withania kansuensis root extract, a cupressus sempervirens leaf extract and an argy wormwood leaf extract. The composition disclosed by the invention not only can withstand scattered high energy visible light and reduce transparencyof the high energy visible light but also can repair mitochondrial DNA damage caused by the high energy visible light, can reduce free radicals generated under the illumination of the high energy visible light, and can also solve the problems of pigmentation and skin aging caused by the high energy visible light.

A light filter that utilizes UV and visible light-absorbing dyes with transmission spectra in accord with the action spectra for suppression of melatonin so as to permit a maximum production of melatonin in humans during night time exposure to high energy visible light.

Described are polymerizable high energy light absorbing compounds of formula I:wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and X are as described herein. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

Described are polymerizable high energy light absorbing compounds of formula I:Wherein Y, Pg, R1, R2, R3, R4, R5, and R6 are as described herein. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

The present invention is broadly directed to an artificial lighting system 30 for emitting artificial light in an indoor environment for controlling myopia in humans. The artificial lighting system 30 generally comprises:1. one or more luminaires such as 34a to 34d designed to directly generate and emit artificial light without filters which substantially simulates the effect of sunlight and is of a predetermined wavelength emission spectrum (a) higher in its proportion of wavelengths at or around 480 nm relatively to neighbouring wavelengths, and (b) lower in its proportion of high energy visible light;2. an electronic control module 36 operatively coupled to the luminaires such as 34a to control their emission of the artificial light.

There are presented topical formulations and methods of applying these formulations in therapeutically effective amounts directly to areas of the human skin to remediate and to counter effects that are commonly regarded as aging. The formulations address the effects on the skin of UV light, High Energy Visible (HEV) light, blue light, and Urban Dust as well as remediating fine lines and age-related localized melanin concentrations ("age spots"), improving the uniformity of skin tone (reduction in skin redness) and enhancing the brightness of the skin to provide a more youthful appearance. Skintreated with the formulations also exhibit a reduction in the depth and prominence of wrinkles, a marked reduction in harmful reactive oxygen species in the treated skin, and a reduction in lipid peroxidation caused by Urban Dust.

A compound, composition, and method for the protection of skin from the harmful effects of radiation, and particularly the harmful effects of high energy visible (HEV) radiation, are disclosed. The compound is a melanin derivative that can be formulated into compositions containing the melanin derivative and a suitable carrier. The composition is topically applied to the skin to reduce the risk of photoaging and improve skin repair due to damage from radiation.

A design method of a color-controllable high-energy visible light filter comprises the following steps: selecting a filter, wherein the filter contains dye for absorbing short-wave visible light, andthe transmissivity T of the filter is expressed as a function of each parameter of an optical device; Selecting a light source, selecting a color group consisting of one color or a plurality of colors, and expressing each color sensing parameter of the color or the color group required to be optimized as a function comprising a light source D and filter transmissivity T; In a 1976 CIE L * a * b *color sensing space, according to the chroma to be optimized, selecting an optimization vector (shown in the specification) to express the comprehensive chromatic aberration of the color or the colorgroup projected on the chromaticity plane required to be optimized as an E optimization color axis T; And performing multi-objective optimization according to the color sensing parameter required foroptimizing the transmission spectrum and the E optimization color axis and T, selecting an appropriate solution, namely, the transmissivity T of the filter, and further optimally designing each parameter of the optical device of the filter based on a function expressed by the transmissivity T.

The invention relates to modified titanium dioxide particles, a preparation method thereof and a skin care product. The modified titanium dioxide particles comprise a core layer and a shell layer wrapping the core layer, wherein the core layer is made of titanium dioxide as a core, and the shell layer is a polydopamine layer; the particle size of the modified titanium dioxide particles is 200-700nm. In the modified titanium dioxide particles, the polydopamine layer wraps the titanium dioxide, and free radicals generated by the influence of external environments such as illumination can be eliminated, so that the modified titanium dioxide particles have antioxidant performance; meanwhile, the modified titanium dioxide particles have good biocompatibility and water dispersibility and efficient light absorption capacity, have very strong ultraviolet absorption capacity, and also have a better absorption effect on high-energy visible light at 400-500nm; and the modified titanium dioxide particles can also chelate heavy metal ions, so that the damage of the heavy metal ions to the skin can be resisted.

A package for contact lenses package having an ability to block ultraviolet and high energy visible wavelengths. The package has a transmissibility of less than 20% at wavelengths between 250 nm and 475 nm, and a transmissibility equal to or greater than 10% at the light wavelengths greater than 480 nm

A light-absorbing, neutral density filter for an electronic device display is provided. More specifically, a light-absorbing, neutral density filter applied as a shield, protective film, or protectivecoating layer for an electronic device display that blocks ultraviolet light, high energy visible light, and at least a portion of blue light. The neutral density filter comprises a polymer substrateand an absorbing agent.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and / or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

Described are ophthalmic devices and methods for their preparation and use. The ophthalmic device comprises at least one heterocyclic ligand complexed with a transition metal, wherein the ophthalmic device is a polymerization reaction product of a reactive mixture comprising: (a) one or more monomers suitable for making the ophthalmic device; and (b) a heterocyclic ligand-containing monomer, and wherein the ophthalmic device has a transmittance at 400 nm of 90 percent or less.

Described are polymerizable fused tricyclic compounds of formula I:wherein R1, R2, R3, m, n, t, and rings B, C, and D are as defined herein. The compounds absorb various wavelengths of ultraviolet and / or visible light (such as high energy visible light) and are suitable for incorporation in a variety of products, such as biomedical devices and ophthalmic devices.

Light-sensitive photochromic contact lens demonstration devices and related methods are disclosed. To provide for the convenient and efficient demonstration of a photochromic contact lens change, the demonstration device includes a controllable lighting-emitting device to expose a demonstrated photochromic contact lens to UltraViolet (UV) and / or High-Energy Visible (HEV) light to cause a photochromic contact lens to change from a non-darkened to darkened state. The demonstration device also includes a viewing window that allows viewing of the contact lens changing from a non-darkened to darkened state as a result of exposure to UV / HEV light and back to a non-darkened state when the light is removed. Further, the photochromic contact lens demonstration device can also include an optional heating circuit to heat the photochromic contact lens during demonstration to cause the photochromic contact lens to change from a darkened state back to a non-darkened state more quickly.

Described are multifocal contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving one or more vision attributes.