66results about How to "Increase reflection strength" patented technology

The embodiment of the present application provides a fingerprint identification device with a smaller thickness and a better imaging effect. The fingerprint recognition device includes: an optical path guiding structure disposed between the display screen and the optical fingerprint sensor for guiding an optical signal obliquely incident on the finger above the display screen and reflected by thefinger at a preset angle to an optical fingerprint sensor, disposed under the optical path guiding structure for detecting the received optical signal.

A reflecting apparatus for a backlight module of a plane display is disclosed. The backlight module includes a light guide distal from the reflecting apparatus, and a plurality of diffusers. The apparatus comprises a light source, a reflector, and two substantially parallel sets of partially overlapped light deflectors wherein a gap exists between either two adjacent light deflectors of the same set or one light deflector and the reflector. A portion of emitted light is directed to the light guide after being reflected from the reflector. The remaining portion of light is directed to the light guide either after it has been deflected by the light deflectors or deflected by the light deflectors prior to being reflected by the reflector. Parallel light received at the light guide is deflected to the plane display as a backlight source of the plane display after passing the diffusers.

Provided is a reflected pattern-printed transparent sheet in which a high reflection intensity of a non-visible light is obtained and in which a transparency in a visible light region is high. The above transparent sheet is a reflected pattern-printed transparent sheet in which non-visible light reflective transparent patterns are printed on a surface of a transparent substrate and which is mounted oppositely to a front face of a medium capable of displaying images, wherein an ink forming the transparent patterns described above contains a non-visible light reflection material; the non-visible light reflection material is a material having a wavelength selection reflectivity to a wavelength in a non-visible light region; and a thickness of the above transparent patterns is 6 to 20 μm.

The invention discloses a doped pearlescent pigment and a preparation method thereof. The pigment uses a glass flake as a substrate; the surface of the glass flake is coated with a SiO2 or SnO2 coating; the surface of the SiO2 or SnO2 coating is coated with a doped metallic oxide coating; the doped metallic oxide coating is a coating of metallic oxide doped with at least one metallic element compound, nonmetallic element compound or the combination of the two. The glass flake after SiO2 or SnO2 coating treatment is directly coated with the doped metallic oxide coating and then calcined once so as to form the doped pearlescent pigment. The invention relates to the pearlescent pigment containing the doped metallic oxide coating. By doping the metallic oxide with different metallic element compounds and/or nonmetallic compounds, the color and glossiness of the doped pigment are adjusted; therefore, both a high-glossiness colorful twinkling effect and a soft-glossiness effect can be obtained. Moreover, the pearlescent pigment has good hiding rate as well.

The invention discloses a display screen, a terminal, and a display screen making method; the display screen comprises a display layer, a function layer, an ink layer, an optical film and a transparent protection plate; the display layer comprises a visible zone and a non-visible zone; the optical film comprises a first euphotic layer arranged corresponding to the visible zone, and a second euphotic layer arranged corresponding to the non-visible zone; the visible function layer and the first euphotic layer can form a visible euphotic layer, wherein the refractive index of the visible euphotic layer is same with that of the second euphotic layer, so the reflection intensity increment of the non-visible zone is bigger than that of the visible zone, and the reflection intensity of the non-visible zone and the visible zone becomes consistent, thus allowing the appearance surface of the display screen to realize color integrated effect under the power off condition, and enhancing visual effect of the display screen.

The invention relates to the field of lamps and discloses a heat-dissipation type LED (Light Emitting Diode) lamp. The heat-dissipation type LED lamp comprises a lamp body, a lamp cap, a lamp holder and a lamp shade, wherein the lamp body is connected to the lamp cap; the lamp cap is in threaded connection with the lamp holder; the lamp shade covers the lamp body; foldable memory metal is connected between the lamp holder and the lamp shade; a plurality of holes are formed in the foldable memory metal; a first elastic sleeve is connected onto the lamp holder in a sliding manner; a second elastic sleeve sleeves the first elastic sleeve in the sliding manner; the second elastic sleeve is connected to the lamp shade; an expansion block is arranged between the second elastic sleeve and the lamp shade; a spring is connected between the first elastic sleeve and the memory metal; a first through hole is formed in the first elastic sleeve; a second through hole is formed in the second elastic sleeve; the first through hole and the second through hole are formed in a staggered manner; the first elastic sleeve is positioned on the outer side of the memory metal; the lamp shade is a transparent heating expansion body. Compared with the prior art, the heat-dissipation type LED lamp has the advantages of better heat dissipation effect, better illumination brightness, low production cost and long service life; the heat-dissipation type LED lamp can be popularized and used.

A street lamp adopting an LED light source comprises a lamp housing, a reflecting shade, a light-emitting port, a light-transmittable shade and an LED light source module, wherein the reflecting shade is arranged in the lamp housing; the light-emitting port is arranged on the lamp housing; the light-transmittable shade is arranged at the light-emitting port; the LED light source module is fixed in the reflecting shade, and comprises a first stamping sheet metal, a second stamping sheet metal, a third stamping sheet metal, a plurality of LED chips and a control circuit board; the LED chips are arranged on the second stamping sheet metal; the control circuit board is connected with the LED chips; the second stamping sheet metal is provided with a mounting port used for fixing the control circuit board; a plurality of openings for limiting an area with point fluorescent powder glue are formed on the third stamping sheet metal; the LED chips are stuck on the second stamping sheet metal in positions corresponding to the openings; and the first stamping sheet metal, the second stamping sheet metal and the third stamping sheet metal are fixed with one another through a connecting mechanism. The street lamp adopting the LED light source has the advantages of good heat dissipation performance, low cost and long service life.

The invention aims to solve the following problems in the prior art: an existing random fiber laser based on Rayleigh scattering is weak in Rayleigh scattering and high in hot-shot threshold and requires for long-distance optical fibers; a random fiber laser based on the Raman effect requires for a high-power pumping light source; and a random fiber laser based on a random distribution grating array is complex in manufacturing process. In order to solve the above problems in the prior art, the invention provides a brand-new random fiber laser based on a random Brillouin dynamic grating. The brand-new random fiber laser based on the random Brillouin dynamic grating comprises a laser source, a 1*2 optical fiber coupler, a first electro-optical modulator, a first random optical pulse generator, a first optical isolator, a delay fiber, a first erbium-doped optical fiber amplifier, a first polarization controller, a polarization beam combiner, a second optical isolator, a second electro-optical modulator, a second random optical pulse generator, a third optical isolator, a second erbium-doped fiber amplifier, a single sideband modulator, a microwave source, a second polarization controller, a fourth optical isolator, a polarization maintaining fiber, a pumping laser source, a wavelength division multiplexer, a reflector and an erbium-doped fiber.

The invention discloses a detection method of an acoustic Doppler profile flow velocity meter. The detection method comprises the following steps that micro-nano bubble aerators are laid at the bottom of a pool; a micro-nano bubble generator generates micro-nano bubbles in the pool; the micro-nano bubbles are generated continuously for a time period and then stopped; and a traction and detection vehicle travels at uniform speed along tracks after a wait, and the flow velocity meter on the vehicle collects data. The micro-nano bubble aerators are uniformly arranged at the bottom of the pool to generate uniform micro-nano bubbles in the static pool, so that reflection substance of sufficient concentration is included in the water, the concentration of the reflection substance is uniform, the reflection intensity of static water is substantially improved, and requirements for water detection of the acoustic Doppler profile flow velocity meter are satisfied. Thus, the acoustic Doppler profile flow velocity meter can obtain needed valid data, and high-precision detection of the acoustic Doppler profile flow velocity meter can be realized in a static water tank.

The invention discloses an efficient self-cleaning energy-storage illuminating light reflection film. The efficient self-cleaning energy-storage illuminating light reflection film sequentially comprises a self-cleaning cladding layer, a light reflection film layer, an air layer, an energy-storage illuminating light reflection film layer and an adhesive layer from top to bottom. According to the efficient self-cleaning energy-storage illuminating light reflection film, cleaning can be kept for a long time through the self-cleaning effect of the self-cleaning cladding layer outdoors; under the illumination condition, and the warning and guiding aims are achieved through the efficient light reflection effect of the light reflection layer; under the dark condition, the warning and guiding aims can be also achieved through the illuminating effect of the energy-storage illuminating layer. The light reflection film has the advantages of being good in self cleaning, efficient in light refection, high in illuminating brightness, long in illuminating time and service life, wide in application range and the like.

The invention discloses a double-displacement-measurable corner reflector. The double-displacement-measurable corner reflector is characterized by comprising a triangular pyramidal reflector body, a Y-direction sliding module, a rotating module, an X-direction sliding module, a base module and connection rods, wherein the triangular pyramidal reflector body and the Y-direction sliding module are connected through the rotating module; the X-direction sliding module and the base module are located below the Y-direction sliding module; all the modules are connected through the connection rods. The double-displacement-measurable corner reflector has the advantages that a cardan joint allows the corner reflector to freely rotate in a three-dimensional space, so the repeating utilization rate is high; the corner reflector can move in the X-direction and the Y-direction and simulate radar sight direction displacement at high precision; vernier calipers are installed on the two sides of the X-direction and the Y-direction of the corner reflector, so reading errors caused by movement of the corner reflector can be reduced; the corner reflector is convenient to carry, easy and convenient to install and detach, low in cost, and capable of adjusting directions of the reflector body in the three-dimensional space and enhancing the reflection intensity and the SNR of a radar signal.

The invention discloses a high light-emitting rate LED lamp which comprises an insulation base, a pin, a reflection cup and a light emitting chip, wherein the insulation base is provided with a concave cup with a hollow structure; the pin penetrates through the insulation base; the reflection cup is accommodated into the concave cup, and the inner surface layer of the reflection cup is made of reflection materials; and the light-emitting chip is arranged in the reflection cup and is electrically connected with the pin. The high light-emitting rate LED lamp can effectively guide light out, improves the light-emitting rate, and has good heat radiating property. The invention also discloses a manufacture method of the high light-emitting rate LED lamp.

The invention discloses a finned u-shaped solar collector tube, which mainly comprises a u-shaped copper tube, a sail-shaped fin, a single-sealing cover, a transparent heat preservation tube, a reflective diaphragm and the like. Due to the adoption of a vacuum sealing heat preservation measure combining the single-sealing cover and the single-layer transparent heat preservation tube, the finned u-shaped solar collector tube realizes the heat collection scheme of directly taking the fin of the u-shaped copper tube as a solar irradiation surface, changes heat collection and heat transfer ways adopted in the prior art, cancels redundant low-efficiency intermediate heat transfer links, simplifies a structure, directly transfers radiation energy collected by the fin into a heat transfer medium in the u-shaped copper tube, remarkably reduces the surface temperature of the irradiation surface, improves a heat transfer rate and heat efficiency, enables a plurality of technical measures such as the sail-shaped fin, a heat absorption channel, reflective heat-aggregation, a matt black body and the like capable of increasing an effective heat collection area and improving the heat collection efficiency to be applied to achieve the technical effects of radiant absorptance alpha of 96 percent, the heat efficiency improved by about 40 percent and reduction in the cost, has the characteristics of rational structural design, reduction in the cost, improved heat efficiency and the like, and the advantages of low heat diffusion loss, high heat transfer rate, reliability, simple process and the like, and is convenient to arrange and easy to produce in large scale.

The invention relates to a projection screen, and relates to the technical field of optics. The projection screen comprises a light-transmitting base material and a plurality of light reflecting components. The plurality of light reflecting components are attached to the front surface and the back surface of the light-transmitting base material in a discrete manner, and the light reflecting assembly comprises a reflecting layer attached to the light-transmitting base material and a light diffusion layer wrapping the reflecting layer. By means of the light reflecting components, the reflectionintensity of the near surface (namely the surface of the side, close to the projection source, of the projection screen) is enhanced, and the reflection intensity of the far surface (namely the surface of the side, away from the projection source, of the projection screen) is restrained, thereby reducing the ghosting phenomenon under the condition that the projection screen is perspective, and improving the display effect of projection.

The invention discloses a high-low voltage power distribution device with a storage mechanism, and belongs to the technical field of high-low voltage power distribution, the high-low voltage power distribution device comprises a cabinet body, a cabinet door is installed outside the cabinet body through hinges, and an inclined plate is fixedly installed on the inner wall of one side of the cabinet door; the fireproof protection assembly is arranged in the device, automatic protection in the device can be achieved through the fireproof protection assembly, when the fireproof protection assembly is in lap joint with the inclined plate, an alarm switch can be touched, at the moment, an alarm lamp can be directly controlled to give an alarm, surrounding workers are warned to evacuate, power is cut off, and follow-up remedial measures are taken; according to the device, through creative design, monitoring and control of short-circuit fire emergencies in the high-low voltage power distribution device without an electronic structure are achieved, meanwhile, through the arrangement of the triggered fireproof protection assembly, the coverage range of an internal fire extinguishing matrix to flame points is enlarged, the fireproof protection effect is improved, and meanwhile the good warning effect is achieved.

The present disclosure relates to a grating device, a light-emitting unit and a light detection method. The grating device includes a first waveguide and a second waveguide. A first input beam of a TE mode propagates through the first waveguide, and a second input beam of a TM mode propagates through the second waveguide. Output beams are obtained by diffraction which steer the first and second input beams. The first and second input beams have different steering angles at least at one wavelength. The grating device tunes a steering angle by varying a wavelength. The two input beams have different polarization modes, which increases an angle range of steering angles by wavelength tuning. A lidar using the grating device can expend an angle range of detection.

The invention relates to a thermal insulation coating for a barrier fabric and belongs to the technical field of preparation of coatings. The thermal insulation coating is characterized in that a flaky material is used as a substrate and is loaded with a deposited tantalum oxide material; the deposited tantalum oxide material uniformly coats a flaky substrate-shaped lens to form filler particles with high reflection strength; the filler particles have excellent reflecting properties for visible light and near-infrared light, so that the heat absorption property of textiles is effectively reduced, and a heat insulating protection effect is realized; and moreover, tantalum oxide formed by surface deposition and calcination compactly coats modified filler doped in the coating prepared by the invention and has excellent stable performance, so that the corrosion is effectively prevented in the daily use process of the coating, and the thermal insulation coating has high stability and using persistence.

The invention discloses a quantum dot light conversion film for improving the color gamut and the resolution ratio of a Micro-LED and eliminating lamp spots (mura) and a preparation method of the quantum dot light conversion film. The quantum dot light conversion film comprises a transparent porous substrate, quantum dots, a first barrier film and a second barrier film. The transparent porous substrate is filled with the quantum dots; the first barrier film and the second barrier film are respectively attached to the upper surface and the lower surface of the transparent porous substrate; the transparent porous substrate is filled with the quantum dots through ink-jet printing.

The invention discloses a film pasting cover plate and a manufacturing method of the film pasting cover plate. The film pasting cover plate comprises a cover plate body and a film pasting layer arranged on the surface of the cover plate body, the film pasting layer comprises a film pasting body, a grating pattern formed on the first surface of the film pasting body and a reflecting layer formed onthe second surface of the film pasting body, wherein the first surface and the second surface are opposite, and the grating pattern is located between the cover plate body and the film pasting body.In this way, the definition of the grating pattern can be improved, and chemical pollution can be reduced.