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57results about How to "Eliminate absorption" patented technology

High-brightness color liquid crystal display panel employing light recycling therein

Reflective color filters using layers of cholesteric liquid crystals with two different center wavelengths and bandwidths per layer are stacked in two layers to provide colored light for displays. With a two layer stack circularly polarized light of one handedness can be provided. With a two layer stack circulary unpolarized colored light can be provided. With a broadband polarizing filter overlapping other filters in the stack a black matrix can be provided by reflecting all colors and transmitting no light in the overlapping areas. When broadband reflective cholesteric liquid crystals are used two primary colors can be reflected in the same pixel of a display making reflective layers with two reflective portions per layer possible. Color displays having three linear sub-pixels with three primary colors or with four sub-pixels of white, blue, green, and red in a pixel with two colors in a top row and two colors on a bottom row can are made with two colors per layer in two layer stacks. The pixels in the display are arranged such that multiple adjacent sub-pixels in a layer, or row in a layer, with the same color makes the color filters easier to manufacture. Displays using these reflective color filters may have a reflective polarizer for viewing the display at wide angles without color distortion.
Owner:REVEO

High-brightnesss color liquid crystal display panel employing light recycling therein

InactiveUS20020113921A1Good colorAvoiding shortcoming and drawbackLiquid crystal compositionsSolar heating energyDisplay devicePolarizer
Reflective color filters using layers of cholesteric liquid crystals with two different center wavelengths and bandwidths per layer are stacked in two layers to provide colored light for displays. With a two layer stack circularly polarized light of one handedness can be provided. With a four layer stack unpolarized colored light can be provided. With a broadband polarizing filter overlapping other filters in the stack a black matrix can be provided by reflecting all colors and transmitting no light in the overlapping areas. When broadband reflective cholesteric liquid crystals are used two primary colors can be reflected in the same pixel of a display making reflective layers with two reflective portions per layer possible. Color displays having three linear sub-pixels with three primary colors or with four sub-pixels of white, blue, green, and red in a pixel with two colors in a top row and two colors on a bottom row can are made with two colors per layer in two layer stacks. The pixels in the display are arranged such that multiple adjacent sub-pixels in a layer, or row in a layer, with the same color makes the color filters easier to manufacture. Displays using these reflective color filters may have a reflective polarizer for viewing the display at wide angles without color distortion. A method of producing cholesteric liquid crystal color filters by polymerizing different portions of cholesteric liquid crystal mixtures at different temperatures and radiations to obtain different central wavelengths and bandwidths of reflection. By masking parts of a layer several portions with different colors are polymerized in a single layer. Further, with radiation which is attenuated in the cholesteric liquid crystal material stacks of different portions reflecting different colors in the same layer are made. Further the cholesteric liquid crystals are polymerized to have other optical properties in the stack such as quarter wave plates and broad band polarizers such that entire optical devices can be made in one layer of cholesteric liquid crystal material making the devices smaller, lighter, more robust, reliable, and easier to make by eliminating gluing and alignment problems. With overlapping reflective cholesteric liquid crystal which together reflect all light stacks with automatic black matrixes built into the layer are made saving light from being blocked by conventional black matrix light absorbing layers in display devices.
Owner:REVEO

One-step packaging LED (Light Emitting Diode) lens with free curve and design method of same

ActiveCN102168838AReduce light intensityEliminate the phenomenon of "zebra crossing"Mechanical apparatusPoint-like light sourceIlluminanceEconomic benefits
The invention belongs to the field of optical lenses, and particularly relates to a one-step packaging LED (Light Emitting Diode) lens with a free curve and a design method of the same. The lens comprises a plane and the free curve, wherein the plane corresponds to an inner surface, and the free curve corresponds to an outer surface and is used for realizing uniform illumination and rectangular light distribution. When a light emitting surface of an LED chip emits light beams, the light beams are received by a primary lens after being refracted through the inner surface, and are emitted on a road surface through the free curve. The shape of the free curve is obtained through numerical solution based on the energy conservation law and the requirements for the illumination uniformity. As the one-step packaging lens comprises the free curve, all light emitted by LEDs can illuminate the road surface; thus, the utilization rate of the light beams is increased, and the 'zebra pattern effect' is avoided. When the lens is used, the uniform illumination can be realized through combining a plurality of packaged LEDs, the link of the secondary optical design is eliminated, and therefore, a lot of time is saved. The one-step LED light distributing lens is widely used, is suitable for all fields in need of uniform illumination, and has great social and economic benefits.
Owner:FUDAN UNIV

Device and method for preparing high-purity chalcogenide glass

InactiveCN102936090ASimple processEliminates impurity absorptionGlass furnace apparatusEngineeringPollution
The invention provides a device and a method for preparing high-purity chalcogenide glass. By means of the device and the method, the technical problem that the chalcogenide glass prepared in the prior art is high in purity content, large in absorbing consumption, complex in purification and the like. The device comprises a first vertical pipe, a second vertical pipe, a connection pipe and a third vertical pipe, wherein the upper end of the third vertical pipe is the only opening of the device, the lower ends of the first vertical pipe and the second vertical pipe are both enclosed, and the upper ends of the first vertical pipe and the second vertical pipe are communicated with each other through the connection pipe; the connection pipe is perpendicular to the first vertical pipe and the second vertical pipe, or an included angle formed by the connection pipe and the first vertical pipe is an obtuse angle; and the lower end of the third vertical pipe is communicated with the connection pipe. By means of a process for repeatedly distilling chalcogenide simple substance raw materials, water impurities containted in the chalcogenide simple substance raw materials is eliminated, and the method and the device are simple in process, no secondary pollution can be guided in during preparation, and impurity absorbing of the chalcogenide glass is remarkably eliminated.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Micro-fluidic chip heat dissipation device, and manufacturing method thereof

The invention discloses a micro-fluidic chip heat dissipation device, and a manufacturing method thereof. The micro-fluidic chip heat dissipation device is used for heat dissipation of heat production areas of micro-fluidic chips, and comprises high thermal conductivity micro-channels filled with a high thermal conductivity liquid; and the high thermal conductivity micro-channels and the heat production areas are arranged with microscale intervals. Heat dissipation of the micro-fluidic chips is realized via the high thermal conductivity micro-channels filled with the high thermal conductivity liquid, and the micro-fluidic chip heat dissipation device is especially suitable for enhanced heat transferring of tiny areas in low thermal-conductivity micro-fluidic chips. When the temperature of the heat production areas is increased, the high thermal conductivity liquid near the heat production areas absorbs heat energy of the heat production areas, and transfers the heat energy to larger spaces in the micro-fluidic chips rapidly, and heat generated in the micro-fluidic chips can be eliminated naturally under chip surface natural convection action. The micro-fluidic chip heat dissipation device is simple in structure, is convenient to prepare, is low in cost, and is excellent in integration performance, and more importantly, it is convenient to realize anisotropism reinforcement of heat transferring of the tiny areas in the chips.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Silicon substrate nitride multi-quantum well homogeneously integrated electro-optical modulator and preparation method thereof

The invention discloses a silicon substrate nitride multi-quantum well homogeneously integrated electro-optical modulator and a preparation method thereof. A silicon substrate nitride wafer with a multi-quantum well structure as a carrier is realized, the silicon substrate nitride wafer with the multi-quantum well structure comprises a silicon substrate layer and a nitride epitaxial layer which islocated on the silicon substrate layer and comprises the multi-quantum well structure, and a waveguide type electro-optical modulation module which serves as a single-wavelength light source and is provided with a Bragg reflector and a photoelectric detector are arranged on the nitride epitaxial layer. The light source, the electro-optical modulation module and the photoelectric detector are integrated on a suspended film structure, visible light transmission loss and transmission leakage in the homogeneously integrated electro-optical modulator are low, and optical signals can be controlledand modulated with high degree-of-freedom and high response speed. The electro-optical modulator can applied to an optical communication network to improve performance indexes of a visible light communication technology in the aspects such as information transmission rate, information processing speed and terminal device integration degree.
Owner:NANJING UNIV OF POSTS & TELECOMM

Peony-strawberry fruit juice-containing alcoholic drink and preparation method thereof

The invention discloses a peony-strawberry fruit juice-containing alcoholic drink and a preparation method thereof. The peony-strawberry fruit juice-containing alcoholic drink is prepared from 32-40 parts of strawberry, 8-10 parts of peony, 20-30 parts of peony seed meal, 60-80 parts of glutinous rice, 2-3 parts of vervain, 1-2 parts of red sage root, 2-3 parts of Chinese angelica, 1-2 parts of achyranthes root, 2-3 parts of snow lotus herb and a proper amount of water. The preparation method utilizes a superheated steam rice roasting technology so that waste water pollution and energy waste are reduced and a taste is savoury, mellow, light and tasty. Through use of nutritional and functional components of a tea juice and traditional Chinese medicine micro-powder in alcoholic drink base brewing, a tea fragrance and nutrition and health components are fused. Beneficial components are further extracted, are convenient for human intake and have effects of replenishing blood and invigorating circulation of blood, clearing and activating the channels and collaterals, relieving restlessness and insomnia, and improving discomfortable symptoms such as female menstrual pain. The peony-strawberry fruit juice-containing alcoholic drink is suitable for women, is clear and transparent, has a pure fragrance, has a typical bouquet and a strawberry taste, and has a refreshing taste.
Owner:刘伟
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