61results about How to "Reduce blue light" patented technology

An improved lens with Rugate filter specifically designed to be worn in prescription and non-prescription glasses, contact lenses, intraocular lenses and sunglasses, and to provide protection against macular degeneration by reducing harmful visible blue light transmission and ocular photochemical damage. The lens at least includes a single lens layer with a Rugate filter deposited thereon to selectively block visible blue light. Other layers may be added including a polarizing layer, dielectric layer and/or color tint in a lens sandwich configuration, to additionally give a high degree of UVA and UVB protection, color contrast, and glare reduction. The Rugate filter is a stop band which yields an exceptional light transmission profile under all light conditions, thereby maximizing protection as well as clarity of vision. In the multi-layer embodiment, all of the lens layers provide comprehensive protection for preventing macular degeneration, cataracts and other ocular injuries, yet maintain a balanced light transmission profile for visual acuity.

The invention concerns an illumination apparatus for an optical observation device (10), in particular a stereomicroscope or a stereo surgical microscope. A multi-armed light guide with coupler (2) mixes colored light emitted by light-emitting diodes (1a-c) to yield white mixed light (15).

An improved multi-layer performance lens for protective eyewear such as sunglasses which includes a pass band Rugate filter. The lens design is a sandwich configuration including a polarizing layer between two ophthalmic lens layers in a sandwich configuration, and a Rugate filter applied to one side thereof to yield an exceptional light transmission profile under all light conditions, thereby maximizing protection as well as clarity of vision. In addition, an optional dielectric layer and/or hydrophobic overcoat may be applied. The foregoing layers are arranged to provide a balanced light transmission profile optimum for preventing macular degeneration, cataracts and other ocular injuries.

The invention relates to a white light emitting diode which comprises a base, light emitting crystal grains arranged on the base, a first fluorescent layer which is arranged on the base and covers the light emitting crystal grains and a second fluorescent layer which is arranged on the first fluorescent layer and has a top area smaller than the top area of the first fluorescent layer; the light emitting crystal grains are positioned within orthographic projection range below the second fluorescent layer so as to increase the path length of the fluorescent layer that the forward light of the light emitting crystal grains passes through and improve the color evenness of the white light of the white light emitting diode.

The embodiment of the invention provides an eyesight protecting method and an eyesight protecting device. The eyesight protecting method comprises the following steps: when a screen of terminal equipment begins to be lightened up, recording an appointed parameter in real time; when the appointed parameter surpasses a preset threshold value, gradually reducing the color temperature of the screen until the screen turns off. In the embodiment of the invention, when a user watches the screen, if a certain parameter surpasses the threshold value (for example, the lighting duration of the screen surpasses a duration threshold value, or the blinking frequency of the user surpasses a frequency threshold value), the conclusions that the eyes of the user begin to feel tired and the color temperature of the screen is required to be adjusted are drawn, so that the color temperature of the screen is gradually reduced, for example, the color temperature of the screen is reduced to a certain extent at the set time intervals so as to gradually reduce blue rays, harmful to the eyes, emitted by the screen, and the user is gradually adapted to change in the color temperature imperceptibly, thereby fulfilling the aim of protecting eyesight.

The invention belongs to the field of LED light emitting devices and aims at providing a full-spectrum high-color-rendering LED white light emitting device to solve the problems of spectrum incompletion of white light produced by LED excited fluorescent powder, high components of blue light peak values, poor color reducibility and the like. The full-spectrum high-color-rendering LED white light emitting device comprises a device support and device pins, wherein at least one group of light emitting units electrically connected with the device pins is arranged on the device support, each light emitting unit comprises two or more blue light LED chips of different wavelengths, LED chips are fixed to the device support through insulation paste or are fixed to the device pins through elargol, and a cavity where the LED chips are fixed is filled with a mixture of fluorescent powder and silica gel. The full-spectrum high-color-rendering LED white light emitting device is fuller in spectrum, more continuous, wider in frequency spectrum, softer in light color and higher in light effect, reduced object surface colors are more lifelike, blue light is less, and the blue light peak values are lower.

The invention described in the present specification relates to a color conversion film including: a color conversion layer which includes a resin matrix, and an organic fluorescent substance that is dispersed in the resin matrix, and emits light with a wavelength different from that of irradiated light when irradiated with light comprising a wavelength of 450 nm, in which the color conversion film includes a color shift compensation polymer, which allows a color difference change of white light emitted to be within 0.05 when an entire surface of the color conversion film is irradiated with blue light having a luminance of 600 nit at 60° C. for 1,000 hours, in the color conversion layer or in an additional layer disposed on the color conversion layer, a backlight unit including the same, and a display device including the same.

The invention relates to a blue-light-barrier anti-dazzle optical film and a preparation method therefor. The blue-light-barrier anti-dazzle optical film comprises a transparent substrate which is formed through laminating two layers of transparent films with the thickness of 20-200 microns, wherein a laminating interlayer is a composite adhesive layer, which contains an anti-ultraviolet agent and a blue and purple light barrier dye and has the thickness of 10-30 microns, one face of the transparent substrate is coated with an anti-dazzle and scratch-resistant coating layer with the thickness of 2-10 microns, the other face of the transparent substrate is coated with a pressure-sensitive adhesive, i.e., a binder with the thickness of 5-40 microns, and the surface of the pressure-sensitive adhesive is covered with a release film. The film material plays roles in preventing dazzle, cutting off blue light, reducing visual fatigue and protecting vision and further has the function of protecting a LCD screen from scratch.

The invention discloses a blue light prevention desk lamp. The blue light prevention desk lamp comprises a pedestal, a connecting element, a lamp shade and an LED light source, wherein the lamp shade with an opening is mounted on the pedestal through the connecting element; the LED light source is arranged in the lamp shade; and a blue light absorbing layer is arranged on the inner surface of the lamp shade. According to the blue light prevention desk lamp disclosed by the invention, since the blue light absorbing layer, which can filter the beam emitted by the LED light source to remove blue light and reduce outgoing blue light and can absorb blue light in the beam emitted by the LED light source, is arranged on the inner surface of the lamp shade, the blue light which is emitted outwards from the whole desk lamp, is greatly reduced, so that the desk lamp is beneficial for preventing human eyes from being hurt by blue light and plays a role of protecting the eyes. And meanwhile the desk lamp has the advantages of simple structure, energy saving and low cost, is beneficial for market popularization and application, and has a wide application prospect.

The object of the invention is a contact lens for pseudo-aphakic eyes and/or eyes with macular and retinal degeneration, its main characteristic being the application of a yellow filter to a standard contact lens, with the purpose of protecting the eye from the short wavelength radiation of the visible spectrum (lower than 500 nm). This invention avoids the difficulties and risks of existing techniques, providing protection to the cataract-operated eye and improving natural protection in eyes with retinal neuro-degeneration, through the simple application of a contact lens. The invention consists of the combination of a standard contact lens and yellow filter, which absorbs short wavelengths of 350/500 nm, both its components being appropriate for use in the human eye.

Embodiments of the invention disclose a terminal display processing method and device as well as electronic equipment. The method comprises the following steps of: obtaining a top-layer window corresponding to a currently operated application program of a terminal; setting a transparent suspension layer above the top-layer window; and setting the color of pixel points in at least partial area of the transparent suspension layer to be deviated from blue. By adopting the terminal display processing method and device as well as the electronic equipment, the blue light emitted through a screen of the terminal can be decreased, so that the blue right entering the human eyes can be decreased and the harm, to the human eyes, caused by the blue right when the users use the terminal is decreased.

The invention relates to a polarizing plate, a manufacturing method thereof and a corresponding device. In the prior art, the schemes such as surface pad pasting, software adjusting and LED changing adopted by an existing liquid crystal display screen for reducing blue light damages respectively have certain defects, so that how to reduce blue light is the problem to be solved at present. The polarizing plate comprises a polarizing layer capable of reflecting blue light. The polarizing layer comprises a PVA film and a reflection structure distributed in the PVA film and incompatible with the PVA film. The reflection structure comprises cholesteryl phase liquid crystals. The arranging direction of the cholesteryl phase liquid crystals is identical with the polarizing direction of the polarizing layer. According to the invention, the reflection structure is added to the PVA film of the polarizing layer, and the arranging direction of the cholesteryl phase liquid crystals included in the reflection structure is identical with the polarizing direction of the polarizing layer, so that the reflection structure is capable of reflecting blue light; and when the polarizing plate is applied to a display device, the blue light entering a human eye can be effectively reduced, so that a blue light prevention effect is achieved.

The invneiton discloses an image processing method and an image processor. The image processing method performed by the image processor includes: receiving an image, whereinin the image comprises a plurality of pixels having different strengths of at least one color; unevenly adjusting the strengths of the at least one color of specific pixels to generate a processed image. The image processing method and the image processor disclosed in the present invention can maintain the quality of the image while reducing the blue light for protecting the eyes.

The invention discloses a method for exciting fluorescent powder of different wavelengths with specific ratio by chip and combination of specific wavelength in the research and production field of SMDLED or COB and other luminescent light sources to generate the ratio and combination of natural light or sunlight (visible light part) with spectrum equalization. Chips with specific luminescent wavelengths include 440- 447 nm chip, 455- 460 nm chip, 465- 470 nm chip, the specific wavelength of phosphor including 495- 505 nm phosphor, 515- 530 nm phosphor, 620- 630 nm phosphor, 650- 660nm fluorescent powder, the combination of the three chips is 1: 1, 3: 2: 3, 2: 4: 2, 4: 2: 2, 2: 2: 4 respectively, and the mass ratio of phosphor is (3-7): (120- 185): (5- 10): (1-5) or (4-9): (115- 180): (5-11): (2- 8) respectively. The invention aims at solving the harm of common LED spectrum unbalance and excessive blue light to human eyes, and providing a healthier and higher color rendering index light source for people.

A liquid crystal display device is provided, comprising a liquid crystal display panel (LCDP) for displaying an image or a video signal. The display device furthermore comprises a double-pulse scanning backlight means (BL) having a plurality of red, green and blue colored light emitting diodes (RLED, GLED, BLED) arranged in rows for backlighting the liquid crystal display panel (LCDP) on a double-pulse scanning basis. Furthermore, a double-pulse scanning control means (CM) is provided for controlling the time sequential double-pulse scanning of the plurality of colored light emitting diodes (RLED, GLED, BLED) of the backlight means (BL) and for driving the time sequential double-pulse scanning of the plurality of colored light emitting diodes (RLED, GLED, BLED).

The invention relates to the technical field of paper making and particularly relates to eyesight-protecting environment-friendly paper. The eyesight-protecting environment-friendly paper comprises a paper base body, wherein the base body is coated with a protective coating; the base body comprises the following ingredients in parts by weight: 70-74 parts of vegetable fibers, 14-18 parts of kaolin, 2-3 parts of water repellent agent, 16-18 parts of carboxylated styrene-butadiene latex, 3-5 parts of guar gum, 12-15 parts of silicone acrylate resin emulsion, 14-15 parts of sodium carboxymethyl cellulose and 2-3 parts of cellulose fibers; the protective coating is formed through coating a modified melanin sizing material. Ultraviolet light and blue light irradiating the paper are absorbed, and reflected ultraviolet light and blue light are reduced, so that the paper is soft in luster and good in visual effect. During long-term reading, visual fatigue and visual injury caused by light pollution can be avoided.

The invention relates to a touch control type organic light-emitting display panel. A dielectric layer with a specific Bragg reflector layer structure is disposed between a polaroid and an organic light-emitting diode device or between the polaroid and a touch control panel. In this way, 438nm blue light that is harmful to the eyes of people can be greatly reduced, and an eye protection purpose is achieved. Meanwhile, the inventor accidentally finds that the Bragg reflector layer structure plays a micro-cavity control effect, and can correspond to an organic optical micro-cavity in the device to form a resonator effect, so the spectrum of the display panel is controlled, and the purity is improved. Moreover, in terms of the outer dielectric layer attached to the device, different Bragg reflector layer structures can be designed on the basis of different devices and different demands, and thus a better eye protection effect is achieved. Furthermore, the Bragg reflector layer of the dielectric layer helps to improve the performance of water-resisting oxygen and improve the packaging effect.

The invention discloses a high cyan light LED illuminant component. The high cyan light LED illuminant component comprises a carrier body. The carrier body is provided with an electric connecting structure, at least one set of illuminant structure and a reflection cup. The illuminant structures are arranged in the reflection cup and are connected with the electric connecting structure. The illuminant structures comprise white light illuminant bodies and red light illuminant bodies. The white light and red light are mixed to obtain near-natural light. The relative spectral power of cyan light in the near-natural light is greater than 0.30. The relative spectral power of blue light is less than 0.75. According to light emitted by the light source, the relative spectral power of the cyan light is enhanced, and therefore the color rendering index rises, especially the color rendering index of R12 rises, and color rendering is improved. The relative spectral power of the blue light is lowered, and eyesight protection is facilitated, especially eyesight of young children. Sub-health due to high blue light can be reduced. Structure is simple, size is small, and application is flexible.