52 results about "Color wavelength" patented technology

A projection screen includes a plurality of convex portions serving as a light diffusion control portion, on the surface of a substrate. An optical thin film overlies the substrate and has convex portions having the same shape as that of the convex portions of the substrate. When external light enters the optical thin film with light in three primary color wavelength bands, the optical thin film reflects only the light in the three color wavelength bands and absorbs at least visible light of the external light. When light in the three primary color wavelength bands perpendicularly enters the optical thin film, the rays of the light have incident angles at the convex portions of the optical thin film and diffuse-reflected at angles twice the incident angles. Thus, a predetermined percentage of the light is diffused to increase the viewing angle of the screen.

The present invention relates generally to an illumination device used in dermoscopy. More particularly, the invention comprises an improved apparatus for enhanced imaging and illumination of the skin for medical examination and treatment. An array of LEDs encircle a magnifying lens assembly. One set of surrounding LEDs provides cross-polarized white light to aid in canceling the reflected light from the skin and creating less glare. Another set of surrounding LEDs provides non-polarized white light for traditional immersion fluid dermoscopy or for non-polarized viewing of the skin. A third set of surrounding LEDs provides polarized colored light, wherein the wavelength color is selected at a color wavelength that maximizes the viewing of skin pigment regions which is important for early detection of skin cancers and other skin diseases. In an embodiment of the invention the colored LEDs comprise orange light at a wavelength of 588 nm. The present invention also discloses that the range of colored LEDs in the orange portion of the visible spectrum, namely at 581 nm to 600 nm wavelengths.

A diffractive micro-structure color wavelength division device makes use of diffraction theory, binary optics theory, and operation of phase iteration algorithm to its complex two-dimensional surface phase micro-structure. The color wavelength division device has a multi-wavelength modulation function and is capable of wavelength division and focus, thereby resulting in structural simplification and enhancement of light utilized efficiency of a color image system.

A modular fiber optic light line unit has a housing in which distal portions of one or more fiber optic bundles fan out such that termini of the fibers are arrayed in a continuous fiber row. The proximal ends of the bundles are held in respective sleeves, and light source modules are removably attached over the sleeves to generate light that is incident on the proximal end of the bundle. The light source modules are removably installed by pushing on, without requiring tools. The light source modules have a canister housing containing a solid-state light source, e.g., five watts. Heat management is achieved using fins on the modular housing. Different color wavelength light sources can be employed, and the fibers from the various bundles can be interleaved.

The invention discloses a semiochemical compound color plate and a preparation method thereof. The semiochemical compound color plate comprises a substrate provided with colors, wherein the surface of the substrate is coated with insect gluing viscose, and the insect gluing viscose is formed by mixing sticky mucilage glue and appropriate semiochemicals according to a certain proportion. The synergistic action of the semiochemicals and visual information to food taking, oviposition and other actions of insects is utilized to optimize the color wavelength of each insect, semiochemical components are combined with a viscose plastic (PP (polypropylene), PVC (polyvinyl chloride) or PE (polyethylene)) or paper color plate to prepare the semiochemical compound color plate, the short distance ofthe visual information is overcome, the trapping efficiency and the trapping range are greatly increased, and male and female injurious insects can be trapped. The semiochemical compound color plate can be used for trapping aphids, aleyrodids, liriomyza sativae, diamond back moths, empoasca vitis, aleurocanthus spiniferus, thrips and various other hemiptera, homoptera, lepidoptera and diptera injurious insects, particularly insects hidden under leaf surfaces or in the shadow. The utilization efficiency of the color plate is greatly improved, and the dosage of the color plate is reduced so as to reduce the cost.

The invention relates to a device for displaying a three-dimensional (3D) image, which is used for displaying a first frame to the left eye of a user and displaying a second frame to the right eye of the user so that the user can observe the 3D image according to the first frame and the second frame. The device for displaying the 3D image comprises a digital signal processor and an image output module, wherein the digital signal processor generates the first frame and the second frame according to a 3D image signal; the image output module is used for displaying the first frame and the second frame sequentially or simultaneously; the first frame is provided with first color wavelength distribution and the second frame is provided with second color wavelength distribution; the first color wavelength distribution is different from the second color wavelength distribution; and in addition, one of the first color wavelength distribution and the second color wavelength distribution comprises at least two colors of red, blue and green.

A device is disclosed for attracting predetermined species of animals based on fractal geometry and the animal's own color perception. The device includes a planar object having at least two opposed faces and a shape unique to the fractal dimension of the predetermined animal species which the device is designed to attract. A light emitting surface is disposed on at least one face of the planar object. The surface is covered with light generating elements adapted to emit a light color based on color perception of the predetermined specific species, which color wavelength and brilliance is unnatural in normal surroundings relative to that species' own color perception. Finally, a mechanism is provided for mounting the object and enabling oscillatory-like movement in the object about an axis thereof.

The present invention provides: a solid-state imaging element equipped with an infrared cutoff filter which can suppress the deterioration of the optical properties of three adjacent primary color filters; a manufacturing method for the same; a curable composition for forming the infrared cutoff filter; and a camera module. The solid-state imaging element of the present invention has: a semiconductor substrate; a plurality of photoelectric conversion elements which form a plurality of pixels arrayed on the light-receiving surface side of the semiconductor substrate; and a filter layer which is arranged on the light incident side of the plurality of photoelectric conversion elements, and which corresponds to the plurality of photoelectric conversion elements. The filter layer includes at least: a red color filter through which light in the red color wavelength range passes; a green color filter through which light in the green color wavelength range passes; a blue color filter through which light in the blue color wavelength range passes; and an infrared cutoff filter which blocks infrared light. The infrared cutoff filter is arranged adjacent to at least one of the red color filer, the green color filter, and the blue color filter.

The present invention provides a display device for three-dimensional (3D) images. The display device presents a first and a second frame respectively to left and right eyes of a user, whereby the user perceives a 3D image according to the first and second frames. The display device includes a digital signal processor and an image output module. The digital signal processor generates the first and second frames according to 3D image signals, and the image output module outputs the first and second frames sequentially. The first frame has a first color wavelength distribution, and the second frame has a second color wavelength distribution. The first color wavelength distribution is different from the second color wavelength distribution. At least one of the first color wavelength distribution and the second color wavelength distribution corresponds to at least two colors selected from a color group consisting of red, green, and blue.

An illumination device used in dermoscopy for enhanced imaging and illumination of the skin for medical examination and treatment. An array of LEDs encircle a magnifying lens assembly. One set of surrounding LEDs provides cross-polarized white light to aid in canceling the reflected light from the skin and creating less glare. Another set of surrounding LEDs provides non-polarized white light for traditional immersion fluid dermoscopy or for non-polarized viewing of the skin. A third set of surrounding LEDs provides polarized colored light, wherein the wavelength color is selected at a color wavelength that maximizes the viewing of skin pigment regions which is important for early detection of skin cancers and other skin diseases. In one embodiment, the colored LEDs comprise orange light at a wavelength in the range of 581 nm to 600 nm wavelengths.

The invention provides a color film substrate, a preparing method of the color film substrate and a display device. The color film substrate comprises a color filter. The color filter comprises a plurality of color filtering units. Each color filtering unit comprises a plurality of sub-color filters which allow light with different colors to pass, each sub-color filter comprises a photonic crystal and a photoluminescence material arranged in the photonic crystal, and the photoluminescence materials correspond to the sub-color filters in color. Thus, the size of the sub-color filters can be reduced, and a high resolution rate can be achieved; besides, the photonic crystals can filter out light with other color wavelengths, light passing the photonic crystals can excite the photoluminescence materials in the photonic crystals, and the luminous efficiency can be effectively improved; furthermore, the sub-color filters allow light with different colors to pass respectively, and thus the display effect of the display device is effectively achieved.

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems. The screens have a multi-layered structure configured to selectively reflect light in narrow wavelength bands. Each screen is configured to strongly diffusely reflect light in narrow wavelength bands that are different from the wavelength bands reflected by other screens in the immersive display system. Projector systems can be configured to provide light to associated screens in the narrow wavelength bands reflected by those screens.

An imaging device includes: a first light source having a first frequency characteristic as a blue color wavelength range; a second light source arranged at a position different from the first light source and having a second frequency characteristic different from the first frequency characteristic; an imaging unit which receives a reflected light from an object illuminated by the first light source and the second light source and generates an image of the object; and a color irregularity correction unit (55) which corrects color irregularities of the image captured by the imaging unit, by using a correction table (58) containing correction data to maintain a constant luminance ratio of the respective regions of the first image and the second image in accordance with the first image based on the first light source and the second image based on the second light source which have been captured by the imaging unit in advance.

A method and system for providing multi-color holographic optical traps and patterns. The method and system employs a laser beam which interacts with a diffractive optical element with a hologram and for optics which acts to selectively pass or attenuate different light color wavelengths and to position the particular color light at selected different locations to form the different color holographic optical trap patterns and to use these patterns for various commercial purposes.

Provided is an organic light emitting device with enhanced durability during continuous driving. The organic light emitting device includes: an anode, a cathode, and an organic compound layer being placed between the anode and the cathode and including at least a hole transport layer and an emission layer, in which: the emission layer contains a blue light emitting material; the hole transport layer contains a plurality of kinds of organic compounds; and an organic compound having the smallest ionization potential among the organic compounds includes a compound having no absorption spectrum peak in a blue color wavelength region in a radical cation state.

A device is disclosed for attracting predetermined species of animals based on fractal geometry and the animal's own color perception. The device includes a planar object having at least two opposed faces and a shape unique to the fractal dimension of the predetermined animal species which the device is designed to attract. A light emitting surface is disposed on at least one face of the planar object. The surface is covered with light generating elements adapted to emit a light color based on color perception of the predetermined specific species, which color wavelength and brilliance is unnatural in normal surroundings relative to that species' own color perception. Finally, a mechanism is provided for mounting the object and enabling oscillatory-like movement in the object about an axis thereof.

A modular fiber optic light line unit has a housing in which distal portions of one or more fiber optic bundles fan out such that termini of the fibers are arrayed in a continuous fiber row. The proximal ends of the bundles are held in respective sleeves, and light source modules are removably attached over the sleeves to generate light that is incident on the proximal end of the bundle. The light source modules are removably installed by pushing on, without requiring tools. The light source modules have a canister housing containing a solid-state light source, e.g., five watts. Heat management is achieved using fins on the modular housing. Different color wavelength light sources can be employed, and the fibers from the various bundles can be interleaved.

The invention discloses a plasma chyle degree detection method and system. The method comprises the following steps: 1) adding to-be-detected plasma into a transparent cuvette, and obtaining a color image of the to-be-detected plasma under a white light source; 2) collecting a ground color wavelength image of the to-be-detected plasma again under a multi-band light source; and 3) performing imageprocessing on the ground color wavelength image of the to-be-detected plasma to obtain a ratio of the gray value of a target pattern area to the gray value of normal blood plasma, thereby qualitatively judging the chyle degree of the to-be-detected plasma. After white LED light source imaging, the RGB value of the plasma color is obtained, then the multi-band LED light source is controlled to emitlight with the color similar to that of the background, and imaging is carried out, so that large gray difference can be generated between target features and the background, analysis and eliminationof background interference are better facilitated, and the accuracy of a detection result is improved.

The invention discloses a dynamic color holographic device based on a metasurface and a manufacturing method of the dynamic color holographic device. The dynamic color holographic device is composed of a liquid crystal layer and a metasurface layer. The manufacturing method of the dynamic color holographic device mainly comprises a design and manufacturing method of a super-structure surface and a packaging method of liquid crystal. According to the invention, the metasurface is combined with the polarization regulation and control function of the liquid crystal, so that the dynamic switching of color holographic patterns of the device under the condition of incidence of the same linearly polarized light is realized. Through careful design of the nano-columns on the surface of the super-structure, independent control of wavelengths of different colors can be naturally realized, so that holographic images corresponding to different wavelengths can be imaged at the same position, and color holography is realized. An electric control tuning mode is adopted, and the tuning process is simple; according to the method, phase matching is carried out on the nano-structure units at all positions on the super-structure surface by using the particle swarm optimization algorithm, and compared with other matching algorithms, the method is simpler and easier to implement and does not have adjustment of many parameters.

The invention discloses a wavelength conversion device and a light source system. The wavelength conversion device comprises a wavelength conversion part and a non-wavelength-conversion part. The wavelength conversion part comprises multiple wavelength conversion modules. Each wavelength conversion module comprises a transparent heat conduction base plate, a wavelength conversion layer and a reflecting layer which are sequentially arranged in the excitation light incidence direction. By means of the wavelength conversion device and the light source system, due to the improvement of the structure of the wavelength conversion modules, the reflecting layers are externally arranged, the thickness of the reflecting layers is increased, and meanwhile heat dissipation of the wavelength conversiondevice can also be optimized. The wavelength conversion modules are independently packaged with different materials, the light efficiency of wavelength conversion modules in different colors is sufficiently improved, and therefore the light emitting efficiency of the wavelength conversion device is improved.

The invention belongs to the technical field of functional film materials, and discloses a wavelength-controllable cellulose iridescent film and a preparation method thereof. The method comprises thefollowing steps: (1) uniformly mixing CNC suspension with a lactic acid solution and a glucose solution to obtain a CNC / lactic acid / glucose mixed solution; wherein the CNC suspension liquid is cellulose nanocrystalline suspension liquid; and (2) drying the CNC / lactic acid / glucose mixed solution to form a film, thereby obtaining the cellulose iridescent film. The method is simple and low in cost. According to the invention, by adding lactic acid and glucose, the prepared film has iridescent film characteristics; and the wavelength of the iridescent film is in a visible light region, and the wavelength of different colors of the iridescent film is controllable.

A method and system for providing multi-color holographic optical traps and patterns. The method and system employs a laser beam which interacts with a diffractive optical element with a hologram and for optics which acts to selectively pass or attenuate different light color wavelengths and to position the particular color light at selected different locations to form the different color holographic optical trap patterns and to use these patterns for various commercial purposes.

The invention provides an image sensor and a forming method thereof. The image sensor comprises a semiconductor substrate, a pixel device located in the semiconductor substrate, an anti-reflection film covering the semiconductor substrate as well as light filter matrixes stacked on the anti-reflection film, wherein each light filter matrix comprises various light filters in different colors; the anti-reflection film has different thicknesses corresponding to areas of the light filters in different colors, and the thicknesses are determined according to color wavelengths of the corresponding light filters. With the adoption of the scheme, different light absorption effects of the image sensor can be enhanced, and color saturation of output images can be improved.

A device and a method that achieve a watermark that can be easily recorded and does not significantly impair the appearance of a printed matter are provided. A watermark recording unit (214) that records watermark dots having a color having a small difference from an area color of an area in which a watermark is recorded, and a watermark recording mode determination unit (213) that determines a color of the watermark dots are included. The watermark recording mode determination unit (213) determines a color of the watermark dots in such a way that a wavelength difference Δλ, which is a difference between a color wavelength of the watermark dots and an area color wavelength of a recording area of the watermark dots, is less than a wavelength resolution of human eye. Moreover, the color of the watermark dots is determined in such a way that the wavelength difference Δλ is equal to or higher than a wavelength resolution of a spectroscopic camera (hyperspectral camera) (141) that captures an image for watermark analysis.

The invention provides a color-changing device and a preparation method thereof. The color-changing device comprises at least one color-changing unit, and the color-changing unit comprises a first electrode, a second electrode and a color-changing structure located between the first electrode and the second electrode; the color changing structure is configured to reflect light with a specific color wavelength in response to the action of external light under the condition that a voltage difference is not applied to the first electrode and the second electrode; and when a voltage difference is applied to the first electrode and the second electrode, the first electrode and the second electrode deform to reflect light of other color wavelengths in response to the action of external light.

The present invention provides a preliminary screening method and device for a silicon carbide crystal ingot, the method comprising the following steps: (1) grinding or cutting the surface of the silicon carbide crystal ingot to obtain a transparent or translucent silicon carbide crystal ingot; (2) Use an ultraviolet light source to irradiate the silicon carbide ingot to obtain the light transmission wavelength of the silicon carbide ingot, compare the light transmission wavelength with the standard color wavelength range to determine whether the micropipe density or inclusion density is qualified, and screen to obtain the micropipe The silicon carbide crystal ingot with qualified density or inclusion density is carried out in the next step; the standard color wavelength is the light-transmitting color wavelength of a standard silicon carbide crystal ingot with qualified micropipe and inclusion density after being irradiated with the same ultraviolet light source range. After grinding and cutting the silicon carbide ingot, the degree of visualization is improved, and the silicon carbide ingot with qualified micropipe density or inclusion density is screened by ultraviolet irradiation, which improves the accuracy of the initial screening and reduces the cost of subsequent processing. Detection of work intensity.

The invention discloses a manufacturing method for a sticky trap. The method comprises the following steps: smearing yellow green whose color wavelength is 560-580 nm on a carrier board, and smearing an adhesive composition. The method is advantaged in that through field trials, a yellow green sticky trap whose color wavelength is 560-580 nm has good adult trapping and killing effect on primary pests (tea lesser leafhopper, dendrothrips minowal priesner, aleurocanthus spiniferus quaintance, green plant bug, etc.) of tea trees, and trapping and killing on major natural enemies is prevented.

A color dividing optical device has an integrated structure of dual surfaces, each has a micro / nano structure. The optical device can perform beam splitting and color dividing on an incident light source, which has a constitution from multiple different wavelengths. In a space, the original incident light source is equally split into multiple light beams in an array, according to light intensity. At the same time, the light beam constituted from different wavelengths is divided into multiple sub-light sources, according to the wavelength, so as to have the function to propagate a color array with color dividing. The optical device with capability of modulating the color wavelengths can transform the wide-band incident light source into sub-light beams in array with color dividing (wavelength dividing) and beam splitting.