86results about How to "Achieve total reflection" patented technology

The present invention relates to a pressure sensing-based touch panel and display device. The touch panel comprises a touch screen, infrared light emitters arranged below the touch screen and an infrared light receiver. The touch screen is deformed and bent by pressing, infrared light emitted by any infrared light emitter, after being reflected by the touch screen, is received by a corresponding infrared light receiver, and an included angle theta is formed between the infrared light emitted towards the touch screen by the infrared light emitter and a perpendicular line perpendicular to the touch screen. According to the pressure sensing-based touch panel and display device, a principle that bending deformation of the touch screen may be caused by a pressure and the total amount of received infrared light is influenced is used, pressure grades are obtained by calculating, and then corresponding applications or instructions are run according to the pressure grades.

The invention discloses an etched diffraction grating-type wavelength division multiplexing/demultiplexing device. The etched diffraction grating-type wavelength division multiplexing/demultiplexing device includes an input waveguide, output waveguides, a free transmission slab waveguide region and an etched diffraction gratings; the input waveguide and the output waveguides are located at the same side of the free transmission slab waveguide region and are both connected with the free transmission slab waveguide region; the other side of the free transmission slab waveguide region is connected with the etched diffraction gratings; and grating surfaces of the etched diffraction gratings are of two-dimensional photonic crystal reflector structures. According to the etched diffraction grating-type wavelength division multiplexing/demultiplexing device of the invention, the two-dimensional photonic crystal reflector structures are adopted to replace grating surfaces of conventional etched diffraction gratings, and therefore, fabrication technique difficulty of the device can be effectively reduced, and large fresnel reflection loss between a grating medium and an air interface can be effectively decreased, thereby reducing the insertion loss of the device; full reflection of a single polarization mode can be realized, and full transmission of another polarization mode can be realized, and therefore, polarization maintaining of the device is maintained.

The invention discloses an on-orbit self-calibration device of a satellite-borne laser communication machine and a calibration method of the on-orbit self-calibration device. Comprising a laser, an optical fiber isolator, an optical switch, a first optical fiber coupler, a communication receiving end, a receiving optical fiber, a receiving lens group, a beam splitter, a reflector, a tracking and pointing detector, a tracking and pointing lens group, a color separation film, a first fast reflecting mirror, a secondary mirror, a primary mirror, a two-dimensional oscillating mirror, a pyramid, a second fast reflecting mirror, a transmitting lens group, a transmitting optical fiber and a high-power amplifier. And a second optical fiber coupler and a communication transmitting terminal. According to the invention, the optical switches are sequentially turned on to the receiving optical path or the transmitting optical path, and then are reflected to the receiving optical path through the pyramid to detect the optical power, and the tracking and pointing optical path is used for detecting and compensating the mass center position of a light spot, so that the coaxial self-calibration of the receiving optical path, the transmitting optical path and the tracking and pointing optical path is realized. The tracking and pointing precision and the link transmission efficiency are improved, and the debugging difficulty and accuracy of the laser communication machine during satellite in-orbit operation are reduced.

The invention discloses an amplification module formed by integration of a transistor and film bulk acoustic resonators. The amplification module comprises the transistor and at least one group of the film bulk acoustic resonators. The transistor and the at least one group of the film bulk acoustic resonators are integrated in one structure. The transistor comprises an input end, an output end and a grounding end. One group of the film bulk acoustic resonators comprise at least one film bulk acoustic resonator structure. One film bulk acoustic resonator structure comprises a first electrode, a second electrode, and a dielectric film layer arranged between the first electrode and the second electrode. The at least one group of the film bulk acoustic resonators are arranged at the output end and/or the input end of the transistor and used for harmonic wave tuning. According to the amplification module formed by integration of the transistor and the film bulk acoustic resonators, harmonic wave tuning can be performed on the transistor so that efficiency and linearity of the amplification module can be enhanced.

The invention discloses a dual-frequency dual-mode gyrotron traveling wave tube input coupler, which relates to the technical field of microwave and millimeter wave devices, in particular to a gyrotron traveling wave tube input coupler. The dual-frequency dual-mode gyrotron traveling wave tube input coupler is implemented by adopting the technical measures that the structure of the dual-band (Ku/Ka-band) dual-working-mode (TE11/TE01-mode) input coupler comprises three main parts including a TE11-mode input coupler operating in the Ku band, a TE01-mode input coupler operating in the Ka band, and a cascade reflection cavity structure having a mode selecting property, thereby realizing the purpose of the invention. Compared with the traditional input coupler, the input coupler disclosed by the invention can operate both in the Ku and the Ka band; by adopting the cascade reflection cavity structure, thus total reflection of the TE01 mode is realized, and the single-direction output of theTE10 mode by means of an output circular waveguide is guaranteed; and by adopting a vane loading attenuation material, a competitive mode of attenuating the TE01 mode is achieved.

The invention relates to a graphene-containing vanadium dioxide composite powder and a preparation method and application thereof. The graphene-containing vanadium dioxide composite powder consists ofcore-shell particles and graphene dispersed between the core-shell particles, each core-shell particle consists of a vanadium dioxide particle and metal, the metal wraps the surface of the vanadium dioxide to form a metal shell, and the mass ratio of the vanadium dioxide particles, the metal and the graphene is (70 to 98) to (1 to 20) to (1 to 10). Through the synergistic effect of the metal shells and the graphene of the graphene-containing vanadium dioxide composite powder, the high conductivity of the graphene-containing vanadium dioxide composite powder can be achieved, and the electron transfer capability and infrared transmission and reflection capability of the graphene-containing vanadium dioxide composite powder are increased. When temperature increases, plasma resonance is generated inside the vanadium dioxide particles, a conductive network formed by the vanadium dioxide particles, the metal shells and the graphene carries out the total reflection of infrared light, at themoment, the transmission and absorption of infrared rays can be greatly reduced, consequently, temperature rise is decreased, and the objective of energy saving is achieved.

The invention provides a light adjusting structure of a display device, a backlight module and a display device, belongs to the technical field of display, and solves the problem that the existing light guide plate cannot control the image display luminance in a local display position. In the light adjusting structure of the display device disclosed by the invention, scattering netted dots in a light guide plate main body are mainly made of electrochromic refractive materials, and electric fields in the positions of the scattering netted dots are changed through an electric field control unit to change refractive indexes of the scattering netted dots so as to change optical properties of electrochromic refractive index materials, so that the light guide plate is in a total reflection state, that is, the light guide plate has no emergent light, and the backlight module is further in a dark state; or the light is refracted from the scattering netted dots and in diffuse reflection to make the backlight module in a bright state, so as to improve local dynamic dimming of different regions of the display device and improve the image display contrast. The backlight module disclosed by the invention is suitable for various display devices.

The invention provides a surface acoustic wave resonator and a forming method thereof. The surface acoustic wave resonator is not only provided with the reflecting layer, but also provided with the cavity, so that multiple reflections of sound waves propagating in the vertical direction can be realized, the loss of sound wave energy is reduced, and the Q value of the surface acoustic wave resonator is further improved. Moreover, the reflecting layer is bonded with the bonding layer made of the same material, so that the bonding layer and the reflecting layer are bonded more easily, the bondingstrength between the bonding layer and the reflecting layer can be improved, and the structural stability of the formed surface acoustic wave resonator is correspondingly improved.

The invention discloses a rotary shaft type double-cylinder distance-measuring telescope. The rotary shaft type double-cylinder distance-measuring telescope comprises a left lens cylinder, a right lens cylinder and a middle shaft, wherein a laser transmitting mechanism is arranged on the middle shaft; a laser receiving mechanism is arranged on one lens cylinder, and is rigidly connected with the lens cylinder with the laser receiving mechanism. The rotary shaft type double-cylinder distance-measuring telescope has the advantages that at the premise of not changing the basic shape of the telescope, the relative displacement between the laser transmitting mechanism and the lens cylinder with the laser receiving mechanism in the telescopic eye distance adjusting process is effectively avoided, the change of optical axes of optical systems of laser transmitting mechanism and laser receiving mechanism is avoided, and the distance can be stably, reliably and accurately measured by laser; the requirement of processing accuracy of all parts is the same as the requirement of traditional telescope product, the difficulty in production is greatly decreased, the production cost is reduced, the batched production is convenient, and the rotary shaft type double-cylinder distance-measuring telescope is suitable for being widely popularized and applied.

The invention discloses a three-dimensional metamaterial which is provided with a plurality of periodically-distributed U-shaped structures. Each U-shaped structure corresponds to one pixel point in an image, and all the U-shaped structures jointly form the needed image; each U-shaped structure is composed of two arms and a bottom connected with the two arms, the two arms and the Z axis are in the same direction, the arms of the adjacent U-shaped structures are independent from each other and do not make contact with each other, and the included angle formed between the bottom and the X axis is theta, and theta is larger than or equal to 0 and smaller than or equal to 90 degrees. The invention further discloses a preparation method of the three-dimensional metamaterial, a gray level encoding and display method based on the three-dimensional metamaterial and a binary encoding and display method. By designing the specific metal structure unit, extra freedom degree electromagnetic wave regulation physical properties are introduced, the metamaterial can selectively absorb electromagnetic waves of different frequencies, electromagnetic waves of different polarization states can be absorbed completely or absorbed partially or totally reflected, and therefore the important role is achieved in encoding and imaging technologies.

Provided is a wavelength conversion device, comprising a substrate, a reflecting layer, and a light-emitting layer superimposed successively. The light-emitting layer contains a wavelength conversion material and a second binder, and the reflecting layer contains reflecting particles, auxiliary particles, and a first binder. The reflecting particles are used for reflecting light, and the auxiliary particles are used for filling voids between the reflecting particles. The first binder is used for binding the reflecting particles and auxiliary particles into a layer. The reflecting layer not only ensures a higher reflectivity, but also achieves a lower thickness, such that the heat produced by the light-emitting layer can be better transmitted to the substrate through the reflecting layer, which avoids a decrease in the light conversion efficiency caused by an excessively high temperature of the light-emitting layer. Also disclosed is a light-emitting device comprising such a wavelength conversion device.

The invention provides a backlight module and a liquid-crystal display device. A light-emitting device can be applied to a lateral-entrance backlight module without a light guide plate. The backlight module comprises an LED (Light-Emitting Diode) light source for providing backlight and an optical lens for aligning and emitting LED backlight within a certain angle. The optical lens comprises a bottom surface, a cambered surface opposite to the bottom surface, a vertical surface which is positioned on the two sides of the cambered surface and is connected with the connected with the cambered surface, and a slope which is connected with the bottom surface and the vertical surface, wherein the cambered surface, the vertical surface and the slope are all used for emitting the backlight provided by the LED light source. By adopting the novel optical device provided by the application, most backlight which is originally emitted from the near light side of the LED light source can reach the distance light side of the LED light source after being aligned at a certain degree and is emitted from one end of the distance light side, so that uniform light emitting in a display area is realized.

The invention relates to graphene-containing heat-insulating energy-saving composite powder, and a preparation method and application thereof. The graphene-containing heat-insulating energy-saving composite powder comprises nuclear shell particles and graphene dispersing among the nuclear shell particles. The nuclear shell particles comprise infrared high-reflectivity particles and metal. The metal covers the infrared high-reflectivity particles to form metal shells. The mass ratio of the infrared high-reflectivity particles, the metal to the graphene is (70-98):(1-20):(1-10). The graphene-containing heat-insulating energy-saving composite powder has the advantages that high electric conductivity of the graphene-containing heat-insulating energy-saving composite powder can be realized, and electric transmission ability and infrared-ray reflection ability of the composite powder can be improved; total reflection, not normal diffuse reflection, of an electricity-conducting network, formed by the infrared high-reflectivity particles, the metal shell and the graphene, to infrared rays can be realized, absorption and transmission of base materials to the infrared rays can be reduced remarkably, and accordingly, the objectives of temperature rise reduction and energy conservation are achieved.

The invention discloses an optical device, and a control method and a display device thereof. The optical device comprises an optical structure and a control component, wherein the optical structure comprises a first triple prism set and a second triple prism set, refractive indexes of the two triple prism sets are equal; the control component is connected with the second triple prism set or connected with the first triple prism set and the second triple prism set; and the control component is used for separation or occlusion of the second triple prism set and the first triple prism set through mechanical movements. The optical device is provided with the two triple prism sets, and can be switched between transmission and total reflection by enabling the two triple prism sets to occlude or separate, and therefore the utilization rate of optical energy is improved. In addition, by arranging the optical device between a lower base plate and a lower polarizer of a liquid crystal display panel, switching of a transmission mode and a reflection mode is achieved, the utilization rate of a pixel is improved, and complexity of manufacture is reduced without changing a pixel structure.

The invention relates to an optical waveguide film, a head-up display with the optical waveguide film, a colored head-up display and a head-up display system. The optical waveguide film comprises a lamination surface and a function surface, wherein the lamination surface is used for being laminated with the surface of a base material through an adhesive; the function surface is opposite to the lamination surface, and comprises a coupling area for coupling light rays into the optical waveguide film and an outgoing area for outputting the light rays. The base material can realize full reflection; and an optical waveguide is formed between the base material and the function surface of the optical waveguide film.

The invention relates to a pressure ring device for directly measuring filter membrane loaded atmospheric particles through total reflection X-ray fluorescence spectroscopy. The pressure ring device comprises a pressure ring component, a sample disc and a sample rack, wherein the surface of the sample disc is higher than the sample rack; and the pressure ring component and the sample rack are matched, so that a to-be-measured filter membrane is tightened on the surface of the sample disc. The pressure ring device disclosed by the invention has the beneficial effects that the surface of the filter membrane can be rapidly flattened, and X-ray total reflection is realized, so the elementary composition of the filter membrane loaded atmospheric particles can be directly and rapidly analyzed byusing a TXRF (Total-reflection X Ray Fluorescence) technology, the analysis time is shortened from three hours needed by previous transfer membrane sample preparation analysis to 10 minutes, the efficiency is greatly improved, and the working strength and analysis cost can be reduced. Moreover, since sample preparation and analysis are non-destructive, precious filter membrane loaded atmosphericparticles can be preserved.

The invention discloses a colorimetric dish for measuring a scattered spectrum and an optical system of the colorimetric dish. The colorimetric dish comprises a colorimetric dish body, wherein the longitudinal cross section of the colorimetric dish body is of a right trapezoid structure of which the oblique lumbar is an arch-shaped concave surface; all surfaces of the colorimetric dish body are transparent; an incident angle theta greater than 56 degrees is formed; the arch-shaped concave surface is intersected with the perpendicular bisector of the colorimetric dish body in a position of 3:7 in a vertical direction. The optical system comprises an excited light source, a slit I, the colorimetric dish body and a photoelectric detector, wherein the excited light source and the slit I are arranged on one side of the plane of the colorimetric dish body; the photoelectric detector is arranged at the focal point of the arch-shaped concave surface. By utilizing the total reflection principle, the gap between excited light and scattered light is expanded, the excited light is prevented from entering the detector, and meanwhile the scattered light is gathered through the arch-shaped concave surface, so that the luminous flux entering the detector and the light utilization are increased, and the device can be applied to measurement on scattered light generated through excitation of fluorescent light, phosphorescence or Raman light of a liquid sample.

The invention relates to a sunlight optical fiber light guide coupler. The sunlight optical fiber light guide coupler comprises a leading-in section and a transmission section, the leading-in section is of a circular truncated cone shape, the large end of a circular truncated cone is a light inlet end, the small end of the circular truncated cone is a light outlet end, the leading-in section is formed by doped quartz glass, the refractive index n1 is 1.2-1.4, the transmission section is cylindrical, one end of the transmission section is coupled with the small end of the circular truncated cone of the leading-in section, the transmission section is formed by a doped quartz glass base body, and the refraction index n2 of the doped quartz glass base body is 1.45-1.52. The sunlight optical fiber light guide coupler has the advantages that the coupler is installed between sunlight and light guide optical fibers, converged sunlight can be efficiently coupled to the light guide optical fibers in a low loss mode, and then sunlight can be collected and used for illumination; the doped quartz glass, specific shapes and coating layers are adopted, and the coupler is high in coupling efficiency, stable in temperature performance, long in service life, good in high-temperature resistance and aging resistance, and especially suitable for being coupled with the quartz glass and the light guide optical fibers; the coupler is simple in structure and easy to machine and manufacture.

The invention discloses a laser protection device doped with dye. The device comprises a polymer layer A and a polymer layer B, polymer molecules in the polymer layer A are arrayed into a left-hand spiral structure and can reflect left-hand polarization lasers, polymer molecules in the polymer layer B are arrayed into a right-hand spiral structure and can reflect right-hand polarization lasers, the polymer layer of the left-hand spiral structure and the polymer layer of the right-hand spiral structure are combined, total reflection on circularly polarized light can be achieved, in addition, dye can absorb incident lasers, and the protection angle of laser protection film can be enlarged. The laser protection film doped with dye is easy to manufacture, large in protection angle and good inflexibility, existing devices can be modified, and the film has good application prospects in the fields such as laser protective eyewear and lamination film of car windows.

The invention provides a glass optical fiber for neutron detection. The glass optical fiber comprises a fiber core and a cladding tube coating the outer layer of the fiber core, the fiber core is madeof a scintillation material and is used as a scintillator of the neutron detector; and the cladding tube is made of a high-purity quartz material and is used as a scintillator shell of the neutron detector. The scintillation material is prepared into the glass optical fiber so that total reflection of scintillation of activator ions in the fiber core can be realized; when the glass optical fiberis used for neutron and gamma ray detection, the position resolution of thermal neutron detection can be greatly improved, and the glass optical fiber is easy to design and process into various detector structures. The invention also provides a preparation method for preparing the glass optical fiber.