343results about How to "Increase the optical path" patented technology

The invention discloses a quantum dot film and a backlight module. The quantum dot film comprises a quantum dot layer, wherein the quantum dot layer comprises a matrix and multiple quantum dots which are uniformly dispersed in the matrix; multiple diffusion particles which are uniformly dispersed are arranged in the matrix; a refractive index difference between the diffusion particles and the matrix is more than 0.01; the diffusion particles are used for scattering incident rays in the matrix; an optical path through which the rays pass the quantum dot layer is increased. According to the quantum dot film, the optical path through which the rays pass the quantum dot layer can be increased, the quantum dot utilization rate is increased, the light conversion efficiency is improved, and the cost is reduced. Moreover, three effects of light conversion, atomization and brightness enhancement can be provided, and the thickness of the backlight module is reduced.

The invention relates to a surface-texturing n-type ZnO-based transparent conductive film and a preparation method thereof. The invention forms a large amount of microporous structures with regular arrangement, uniform structure, good communication and a certain depth on the film surface of the conductive film. The surface-texturing film has excellent light capture performance and extremely high conductivity simultaneously. The surface-texturing n-type ZnO-based transparent conductive film prepared by direct current magnetic control continuous sputtering has simple process and easily monitored quality, is suitable for large-scale production, can keep excellent column-shaped crystal structure of the body film, has complete communication between holes and keeps high conductivity of the ZnO-based film; the micropore on the texture surface has excellent uniformity and repeatability compared to the two traditional methods; furthermore, the depth and the diameter of the hole are controllable within a certain range; the average transmissivity of the film layer at the visible light area reaches more than 90%, the mobility is up to 35.4cm[2]/V.S, the resistivity is 1.003*10[-4]Omega.cm and the sheet resistance reaches 0.9 Omega.

A large-relative-aperture long-focal length non-cooled infrared athermalization optical system is arranged in front of the focal plane in the light spreading direction, and is composed of a main reflector, a secondary reflector, a first positive crescent lens, a second positive crescent lens, a reflection/diffraction mixed lens, a movable lens and a second negative crescent lens which are coaxially arranged in parallel. The system adopts a cassette system to increase the optical path by multiple reflections of light, thereby realizing the long coking of the optical system, wherein F<#> is 1; the focal length is 500mm; the center block is smaller or equal to 0.3; and the optical total length and focal length ratio is smaller than or equal to 0.64. Through the secondary imaging, the impact of stray light on the image quality of the system can be effectively inhibited. With the utilization of characteristics of negative dispersion and negative thermal expansion coefficient of the diffractive element and the reasonable distribution of the focal power of the reflection/diffraction mixed lens, the defocusing amount caused by the infrared optical system due to the temperature change is reduced, and combined with the mechanical active athermalization, the image plane defocusing compensation of the system in the temperature range of from -40 DEG C to +60 DEG C is achieved.

The invention discloses a miniature infrared gas detection sensor, comprising a sensor shell and a gas chamber partition board, wherein an opening is formed in the gas chamber partition board, the side edge located on one side of the opening of the gas chamber partition board is connected with the sensor shell, upper and lower partition boards and an intermediate infrared light source are arranged at the lower middle part in an external gas chamber, an inclined plate is obliquely arranged at the upper part of an internal gas chamber, a dual double-compensation pyroelectric infrared detector is arranged at the bottom of the internal gas chamber, two sensitive detector elements are integrated on the dual double-compensation pyroelectric infrared detector, a first light filter and a second light filter are respectively arranged on the upper surfaces of the two sensitive detector elements, and two semi-integral balls are arranged on the bottom surface of the inclined plate at an interval; a plurality of external reflection mirror surfaces are arranged on the inner wall of the sensor shell, a plurality of intermediate reflection mirror surfaces are arranged on the outer wall of the gas chamber partition board, and an internal reflection mirror surface is arranged on the inner wall of the side connected with the sensor shell of the gas chamber partition board. The miniature infrared gas detection sensor disclosed by the invention is small in volume, low in energy consumption, long in light path, high in gas detection stability and precision, high in reaction speed and long in service life.

The invention discloses a screw-type multi-optical-path device for measuring gas concentration, and belongs to the field of optical measurement of gas concentration. The device comprises a laser source module, a screw-type multi-optical-path pool and an output signal detection module; a laser emitted by the laser source module is circularly reflected by the screw-type multi-optical-path pool back and forth and then detected through the output signal detection module, and then the gas concentration is obtained. When the gas concentration is measured through the device, the size of the optical-path pool can be effectively reduced, the effective optical path of the optical function is lengthened, therefore, the sensitivity of optical spectrum detection can be effectively improved, and the precision of absorbed gas concentration measurement can be improved.

The invention provides a NDIR (Non-Dispersive Infra-Red) gas sensor. The gas sensor comprises an infrared light source, a cylindrical optical cavity, an infrared detector and a circuit component, wherein the cylindrical optical cavity is used for containing the gas to be detected, air-vents are formed in the upper end surface and/or lower end surface of the cylindrical optical cavity, and the air-vents are used for allowing the to-be-detected gas to be in and out of the cylindrical optical cavity; the infrared light source, a reflecting mirror and the infrared detector are arranged in the cylindrical optical cavity; the reflecting mirror is used for receiving and reflecting infrared light emitted by the infrared light source, and the infrared detector is used for detecting the infrared light reflected by the reflecting mirror in the cylindrical optical cavity; the circuit component is connected with the infrared detector, and is used for obtaining the concentration of the gas to be detected according to the infrared light detected by the infrared detector, so that the reduction of the volume is realized, the reduction of the cost is realized, and the increase of the optical path is realized, thereby improving the performance of the sensor.

The invention relates to a preparation method of a textured AZO (aluminum-doped zinc oxide) transparent conductive film. A high-alkali aluminosilicate glass substrate is subjected to texturing treatment to form a textured structure on the glass surface so as to provide foundation for the subsequent direct growth of the AZO film and the final formation of the textured surface, thereby implementing the textured structure of the directly growing AZO transparent conductive film on the glass surface, overcoming the defects of overhigh requirement for the thickness of the AZO transparent conductive film and waste of etching in the conventional technique of film formation before acid etching, and effectively lowering the production cost. The haze of the AZO transparent conductive film prepared by the method is 10-30%, the visible light transmittance is greater than or equal to 85%, and the square resistance is 8-15 ohm per square.

The invention relates to a perovskite solar cell with a mixed light trapping structure and a preparation method thereof, and belongs to the technical field of perovskite solar cells. The perovskite solar cell comprises a substrate, a conductive electrode, a micro-nano particle light trapping layer, an electron transport layer, a perovskite light absorbing layer, a hole transport layer, a nano Ag optical grating and a metal electrode, wherein the conductive electrode, the micro-nano particle light trapping layer, the electron transport layer, the perovskite light absorbing layer, the hole transport layer, the nano Ag optical grating and the metal electrode are sequentially formed on the substrate, and the micro-nano particle light trapping layer is TiO2 micro-nano particles. The micro-nanostructure is introduced into the perovskite solar cell with the mixed light trapping structure, so that the light trapping capacity of the solar cell can be significantly improved, and the light absorption of the solar cell is enhanced through increasing scattering of the incident light and prolonging the light path of the incident light in the solar cell, so that the light current of the cell isincreased, and the conversion efficiency of the solar cell is effectively improved. Meanwhile, the nano Ag optical grating is introduced to a back electrode of the solar cell, so that a back reflection effect for the transmission light can be effectively increased by combining back reflection of a silver electrode, and thus the absorption of the cell for the incident light is further enhanced.

The invention discloses a desktop ultra-short-focus optical module, which belongs to the field of optical systems. The desktop ultra-short-focus optical module is used for imaging a first image projected and displayed by a projector ray machine into an amplified second image, and comprises the projector ray machine, a condensing lens, an aspherical lens, a free curved-surface lens and a free curved-surface reflector which are arranged along an optical path in a tandem manner, wherein the free curved-surface lens is composed of a convex lens and a concavo-vonvex lens. The desktop ultra-short-focus optical module provided by the invention corrects spherical aberration in a collimation and focusing system caused by the condensing lens through the aspherical lens, increases the optical path through the free curved-surface reflector and achieves short-focus projection. Moreover, the desktop ultra-short-focus optical module greatly shortens the projection distance through the ultra-short-focus technology, the projection ratio of the desktop ultra-short-focus optical module ranges from 0.1 to 0.18, and the offset of the first image relative to a main optical axis is greater than 120%.

The invention relates to a high-sensitivity resonant optic gyro, and particularly relates to a double-resonant cavity resonant optic gyro which comprises an isolation collimation chip tunable light source Laser, a first coupler C1, a multifunctional integrated optic modulator, a third coupler C3, a second coupler C2, a fourth coupler C4, a main resonant cavity, a first photoelectric detector PD1, a first lock-in amplifier LIA1, a second photoelectric detector PD2, a second lock-in amplifier LIA2, and a feedback control circuit FBC, and also comprises a circular auxiliary resonant cavity with an ohmic contact disposed at the central position, a temperature control module and a fifth coupler C5; an output port is disposed at a position opposite to an input port on the main resonant cavity; an input end of the fifth coupler C5 contacts the output port of the main resonant cavity; an output end of the fifth coupler C5 contacts an input port of the auxiliary resonant cavity; the temperature control module is connected with the ohmic contact through wires made by MEMS technology; and the invention solves the problem of low sensitivity of optic gyros.

The invention belongs to the field of manufacturing of solar cells, provides a method for preparing a solar cell in an inverse opal composite structure and aims to solve problems of small contact area of two substances and low light utilization rate in terms of simple thin film laminations of existing laminated solar cells. According to the method, firstly, colloidal crystals are prepared on a substrate in a self-assembly mode, the substrate where the colloidal crystals grow serves as a working electrode, microsphere gaps are padded with a titanium dioxide semiconductor by a sol-gel method, a form board is removed to obtain a three-dimensional orderly macroporous titanium dioxide thin film material, a three-dimensional macroporous titanium dioxide thin film serves as a working electrode, and three-dimensional macroporous gaps are padded with a cuprous oxide semiconductor by an electrochemical deposition method to obtain the solar cell in the inverse opal composite structure. According to the method for preparing the solar cell in the inverse opal composite structure, by means of three methods of utilizing photonic band gap features of photonic crystals, applying scattering properties of a three-dimensional orderly structure to change photon state distribution, and increasing the contact area of two materials, the light utilization rate of laminated solar cells can be greatly increased.

The invention discloses a forward-condensing multiple-effect back-heating array type humidification and dehumidification solar-powered seawater desalination device which comprises condensers, humidifiers, condensing apparatuses and air channels. Solar light incident from the upper side is condensed through the condensers, penetrates through glass cover plates to reach the surfaces of the humidifiers and is converted into heat energy. Seawater is sprayed on the humidifiers, absorbs vapor of the solar heat energy and performs heat and humidity exchange with air to form saturated wet air, and the high-temperature wet air enters condensation cavities under driving of fans and performs heat exchange with cold seawater to produce fresh water. After the seawater flows out of the condensers, a part of seawater is supplemented and sprayed on the humidifiers, and the residual seawater is discharged out of a system. Non-evaporated saline water drops on saline water plates to be recycled, and redundant saline water is discharged out of the device through the bottoms of the plates. The device can form the multiple-effect system in an arrayed mode, multiple effect structures are identical, the high-temperature high-humidity air and the saline water in one saline water plate are respectively delivered to another effect structure to heat the saline water in the corresponding condenser and cool the wet air, and latent heat discharged during vapor condensation is recovered to achieve the purpose of efficient seawater desalination.

The invention discloses a packaging material for strengthening light reflection, a silicon solar photoelectric module and a film solar photoelectric module. The interior of the packaging material has a porous structure. The average bubble diameter in the porous structure is hundreds of nanometers to hundreds of micrometers to strengthen the light reflection of the packaging material. The packaging material with the porous structure is crosslinked by a chemical crosslinking method or a physical crosslinking method, and the heat resistance is enhanced, therefore, the packaging material is suitable for the silicon solar photoelectric module and the film solar photoelectric module to enhance the power generation efficiency of the modules.

The invention relates to a thin-film photovoltaic cell and a manufacturing method thereof. The thin-film photovoltaic cell comprises a lining, an electrode layer, a p-type absorption layer, an n-type buffer layer, a high-resistance layer and a window layer, which are sequentially arranged in an overlapping way from the bottom up. The window layer is a near infrared waveband low-absorption high-conductivity ZnO-based transparent conductive window layer. The thin-film photovoltaic cell is in a light trapping structure. The manufacturing method of the thin-film photovoltaic cell comprises the steps of: providing a lining; depositing an electrode layer; depositing a p-type absorption layer; depositing an n-type buffer layer; depositing a high-resistance layer; depositing a near infrared low-absorption ZnO-based window layer; and forming a light trapping structure. The thin-film photovoltaic cell has the absorption layer of small thickness and has higher effective light utilization ratio.

The invention relates to a photometric analyzer based on a light guide metal capillary and a detection method thereof. The analyzer comprises a light source, a light detector and the light guide metal capillary, and is characterized in that a light wave can be reflected on the side wall of the light guide metal capillary, a detection light beam emitted by the light source is restricted in the light guide metal capillary for transmission through total reflection on the side wall of the light guide metal capillary, and the light detector is used for receiving the detection light beam emitted out from the light guide metal capillary; a sample inlet is formed in one end of the light guide metal capillary, and a sample outlet is formed in the other end of the light guide metal capillary. The analyzer utilizes the light guide metal capillary to guide the transmission of the detection light beam and a sample to be detected; the total reflection for light on a metal surface is not limited by critical angle, and corrugated fluctuation on the inner surface of the metal capillary enables the incident angle of the detection light beam to change, so that the transmission light path of the detection light beam in the sample can be greatly increased, and the detection precision is improved.

The invention discloses a method and a device for implementing multiple light paths. The device comprises an angle mirror and a refraction lens group, wherein the refraction lens group is arranged on an emergent light path of the angle mirror. The device has a simple structure; the light path is relatively easy to adjust, and engineering is convenient to implement. According to the method for implementing the multiple light paths, 6*2<N> (N is equal to an integer more than zero) light paths are formed; and a light beam is repeatedly reflected by many times in the multi-light-path device, so that the number of effective light paths is increased remarkably and the detection sensitivity is improved.

The invention relates to an NDIR gas sensor system. The NDIR gas sensor system comprises an infrared sensor unit, a microprocessor and a concentration display unit, wherein the microprocessor system is connected with the infrared sensor unit and the concentration display unit; a sampling air chamber can effectively prolong an optical path and can control the volume of the air chamber to facilitatethe miniaturization of the sensor. The potassium bromide (KBr) window piece is arranged to avoid corrosion of a pyroelectric detector, the service life of the sensor is prolonged, and the optical paths of the measuring channel and the reference channel are completely symmetrical, so that the structural design of the single light source dual-optical path can eliminate the influence of external factors such as light source shake, optical device pollution and the like on the measuring precision to a certain extent. The NDIR gas sensor system and the temperature and humidity compensation method thereof employ a GSO-BP neural network to perform temperature and humidity compensation to overcome the defects of the empirical formula compensation method and the circuit compensation method in the prior art and lead the compensation process to be simpler and more accurate, and therefore, the precision is high, the cost is low and the structure is small compared to the prior art.

The invention discloses a nanofiber, an organic solar cell and a method for preparing an organic solar cell by using the nanofiber. A target material, which is less likely to be made into fibers, is made into fibers by using a novel coaxial electrospinning technology, thereby obtaining a nanofiber suspension of the target material. Then, the obtained target material nanofiber is processed and thenadded to the active layer of the organic solar cell. Therefore, negative influences on device performance due to the thickness increase of the active layer is eliminated by the characteristics of high crystallinity, large specific surface area and good structural continuity of the nanofiber, thereby significantly improving multiple optoelectronic performance parameters of the device and providinga possibility for breaking the battery efficiency bottleneck.

A vein identification device relates to the vein identification technology, and comprises a housing; a finger slot, an irradiation light source module and an imaging module are arranged in the housing; the features are that an identification enhancement mode is also arranged in the housing; the identification enhancement module comprises one or more of the following units: a finger positioning unit, an irradiation reinforcing unit, and an imaging reinforcing unit; compared with the prior art, the identification enhancement module is added, and comprises one or more of the following units: the finger positioning unit, the irradiation reinforcing unit, and the imaging reinforcing unit; the finger positioning unit uses structure light to irradiate on the fingertip and finger end so as to obtain the finger pitch angle and deviation angle, thus obtaining excellent finger position information; the irradiation reinforcing unit focuses the light source on the finger through a condenser, thus obtaining excellent imaging quality; the imaging reinforcing unit uses a reflection structure to obtain sufficient edge information and a long light path, thus obtaining excellent imaging contrast.

The optical fiber amplifier includes first amplification (Amp) module and second Amp module. Characters are that filtering module is cascaded between output end of first Amp module and input end of the second Amp module; input end of first Amp module is connected to circulator, and output end of second Amp module is connected to a reflection module; the filtering module generates actions of reflection and transmission respectively for signal lights in shot wavelength band and long wavelength band; reflection module reflects signal light in long wavelength band; a port of the circulator is connected to the input end of the first Amp module; other two ports of the circulator are use for receiving and outputting signal light; first Amp module is in use for magnifying powers of signal in shot wavelength band and long wavelength band, and second Amp module is in use for magnifying power of signal in long wavelength band. Features are: simple structure, low cost, high efficiency.

The invention discloses intelligent visual vascular imaging spectacles equipment which comprises a pair of spectacles, a camera shooting module, a multi-light-source module, a micro-display module and a digital processing module. The pair of spectacles comprises a spectacles frame and lenses. The spectacles frame is internally provided with the camera shooting module and the multi-light-source module. The multi-light-source module is used for lighting the body surface. The camera shooting module is used for shooting images lightened by the multi-light-source module. The shot images are transmitted to the micro-display module after being enhanced by the digital processing module to be observed by medical staff. The micro-display module is provided with a miniature LCD display module. The camera shooting module and the micro-display module are driven by the digital processing module. The intelligent visual vascular imaging spectacles equipment, serving as a wearable device, has the advantage of being convenient to carry. Meanwhile, the micro-display module based on total internal reflection is designed, the optical path is increased through total internal reflection, and the field of view of the micro-display module is increased.