12results about How to "Increase the optical path" patented technology

The embodiment of the invention relates to the field of photovoltaic technology, and provides a solar cell and a preparation method thereof, the solar cell comprises a substrate, the substrate is provided with a first surface and a second surface which are opposite, at least one of the first surface and the second surface is provided with a suede, the suede is composed of a plurality of pyramid structures, and the side wall of at least part of the pyramid structures is provided with a wrinkle part; the wrinkle part is composed of a plurality of scaly protrusions, in the direction from the top of the pyramid structure to the bottom of the pyramid structure, the length of the wrinkle part is a first length, the length of the side wall of the pyramid structure is a second length, and the ratio of the first length to the second length is larger than or equal to 0.5. According to the solar cell and the preparation method thereof provided by the embodiment of the invention, the light reflectivity of the solar cell is at least reduced, so that the light conversion efficiency of the solar cell is improved.

The invention relates to an antireflection polymer film with a lead ion sealing function for a perovskite cell, and preparation and application thereof, and belongs to the technical field of perovskite solar cells. PVA and water are mixed and heated to be dissolved, and a transparent and clear PVA solution is obtained; the preparation method comprises the following steps: sequentially adding a phosphoric acid solution, dibasic phosphate and a transparent plasticizer into a PVA (Polyvinyl Alcohol) solution under continuous heating, respectively reacting for more than 1 hour, pouring the obtained modified polymer solution on a substrate with a micro-nano structure, and naturally curing and stripping to obtain the antireflection polymer film PFPF with lead ion sequestration. When the PFPF is applied to the light receiving surface of the perovskite solar cell, Pb < 2 + > leaked by the PSCs when the light receiving surface is damaged can be reduced, and Fresnel reflection of the light receiving surface can be reduced, so that the light energy loss is reduced, and the photoelectric conversion efficiency of the PSCs is improved.

The invention discloses an underground while-drilling gas cut intelligent treatment device which comprises a drill column, and a closed gas collection chamber, a gas detection chamber and a gas treatment chamber are sequentially connected to the position, close to a drill bit, in the drill column from bottom to top through gas conveying pipes. The gas detection chamber generates large pressure difference in a water-driven gas mode, gas cut gas is collected in combination with a hydrophobic and breathable semi-permeable membrane, hydrocarbon gas and hydrogen sulfide gas in the gas cut gas are detected through infrared light and ultraviolet light respectively, the optical path of gas detection is increased by arranging an optical lens assembly, and the detection accuracy of the gas cut gas is improved. The detection accuracy is effectively improved, hydrogen sulfide gas is absorbed through an alkaline solution in the gas treatment chamber, hydrocarbon gas is adsorbed through an active solid, the adsorbed active solid is sealed and coated and then is circulated to the ground along with the drilling fluid, a desorption experiment can be carried out on the saturated active solid, and the detection accuracy is improved. Therefore, the components and the content of the underground hydrocarbon gas can be accurately analyzed.

The present invention provides a semiconductor laser beam combining device, comprising: a semiconductor laser chip group, a fast axis collimator group, a characteristic slow axis collimator group and an oblique angle reflection prism group; the semiconductor laser chip group comprises a plurality of semiconductor laser chips with the same height in the fast axis direction; the fast axis collimator group comprises a plurality of fast axis collimators; the characteristic slow axis collimator group comprises a plurality of characteristic slow axis collimators; the oblique angle reflection prism group comprises a plurality of oblique angle reflection prisms. The semiconductor laser beam combining device can achieve high reliability and small size.

The application discloses an electronic paper display panel, a driving method thereof and a display device. The electronic paper display panel comprises a first substrate, a first electrode, a pixel definition layer, a reflection layer, a plasmonic resonance layer, an electrochromic component, a second electrode and a second substrate. The first electrode is arranged on the first substrate. The pixel definition layer is arranged on the first electrode. A plurality of microcavities arranged in an array are arranged in the pixel definition layer. The reflection layer is arranged on the sidewall and the bottom of the microcavities. The plasmonic resonance layer is used for generating structural color. The plasmonic resonance layer is arranged on the bottom of the microcavities and located on the reflection layer. The electrochromic component is arranged on the plasmonic resonance layer. Through the above design, the color saturation and the light reflectivity of the electronic paper can be improved.

The present invention discloses a photovoltaic nanocolumn structure and a solar cell based on the structure, wherein the nanocolumn structure is an irregular column whose diameter changes periodically along the vertical direction, the irregular column is symmetrical along the central axis, and the cross section in the horizontal direction always remains circular, and the difference between the maximum diameter and the minimum diameter of the irregular column is 80nm to 120nm. The present invention has stronger light absorption capacity and higher light conversion efficiency.

This invention relates to a device for detecting alcohol content using infrared light. It includes a housing, characterized in that the housing contains a preheating tube, an infrared light source assembly, a flow sensor, an infrared detector, a U-shaped gas chamber, and a sampling pump. A blowing pipe is located at the bottom of the housing and is connected to the preheating tube. The flow sensor and infrared light source assembly are also located between the preheating tube and the U-shaped gas chamber. One end of the U-shaped gas chamber is connected to the preheating tube to ensure a constant temperature within the device. The U-shaped gas chamber is connected to the sampling pump via the infrared detector, which draws the gas to be measured into the U-shaped gas chamber. This invention, by incorporating the U-shaped gas chamber and preheating tube, employs preheating technology to maintain a constant temperature environment, adapting to testing under different conditions. Furthermore, the infrared light source assembly emits infrared light into the U-shaped gas chamber. Due to the U-shaped structure of the gas chamber, the optical path of the infrared light is increased by utilizing the principle of reflection, thereby improving the sensitivity of the infrared measurement.

The utility model discloses an optical fiber sensor and detection system thereof, relate to optical fiber sensor technical field, and the optical fiber sensor includes: first multimode optical fiber;Second multimode optical fiber;Photonic crystal fiber, and the both ends of photonic crystal fiber are connected with the end of first multimode optical fiber and second multimode optical fiber respectively, and photonic crystal fiber is curved structure, and there is a bending section between both ends;Among them, photonic crystal fiber has polishing surface, and the distance between the core center of photonic crystal fiber and polishing surface is less than the radius of photonic crystal fiber. Thus can prolong the optical path of optical fiber sensor, enhance evanescent wave penetration area, improve light leakage intensity, help to improve the coupling efficiency between the film on the surface of optical fiber sensor and light field, improve the sensitivity of optical fiber sensor. Polishing surface can reduce the wall thickness between the core of photonic crystal fiber and the outer wall of photonic crystal fiber, significantly enhance evanescent wave intensity and shorten the metal-light field interaction distance.

This invention provides a grating ruler displacement sensor based on an oblique incidence optical path, relating to the field of optical measurement technology, to address to some extent the problem of excessively large readhead size hindering installation in small spaces. The grating ruler displacement sensor based on an oblique incidence optical path provided by this invention includes a readhead module and a grating ruler. The readhead module includes a housing, a PCB, and a light source. The top wall of the housing has a mounting plane for mounting the PCB, which is mounted on the mounting plane. The light source is integrated on the side of the PCB facing the top wall of the housing. A light-emitting aperture is formed on the top wall of the housing corresponding to the position of the light source, allowing light emitted from the light source to exit the housing. The mounting plane is obliquely positioned and forms an angle with the outer surface of the top wall of the housing. The grating ruler is parallel to the outer surface of the top wall of the housing. Using the structure provided in this application, the overall thickness of the readhead can be made very small, thus enabling easy installation in confined spaces such as micro-machine tools and precision displacement stages.

The application relates to the technical field of hydrogen concentration optical visual detection, in particular to a hydrogen concentration detection device which comprises a detection table, an optical testing device body arranged on the detection table, a detection pipeline body in communication with one end of the optical testing device body, visual detection of a to-be-detected gas by the optical testing device body after the to-be-detected gas enters the detection pipeline body, a joint, a mixing assembly, a buffer assembly, a speed reduction assembly and a reflection assembly arranged in the detection pipeline body in sequence along a gas entering direction; the mixing assembly, the buffer assembly, the speed reduction assembly and the reflection assembly are arranged in the detection pipeline body in sequence, and the optical testing device body is combined with the optical regulation and control means of a beam splitter and a concave lens, the problem of uneven hydrogen distribution is solved through the mixing assembly, the gas flow rate is reduced and the contact time is prolonged through the buffer and speed reduction assembly, and finally the optical path is significantly prolonged through the optical assembly, and the detection signal is enhanced.

The embodiment of the present invention discloses a symmetrical long optical path infrared gas detection optical cavity, comprising: a first reflecting surface, a second reflecting surface, an infrared light source, an infrared detector and a top plane mirror, wherein: the first reflecting surface comprises a first parabolic reflector, a first corner plane mirror and a first optical path extension plane mirror, the first parabolic reflector is used to collimate the diffuse infrared light beam emitted by the infrared light source, and reflect the collimated infrared light beam to the first corner plane mirror; the second parabolic reflector, the second corner plane mirror and the second optical path extension plane mirror in the second reflecting surface are symmetrical with the first parabolic reflector, the first corner plane mirror and the first optical path extension plane mirror based on the optical cavity symmetry axis, and the center of the infrared detector is placed at the focus of the second parabolic reflector. The symmetrical long optical path infrared gas detection optical cavity is a small volume, long optical path and extendable optical path optical cavity, which can improve the gas detection accuracy.

This invention discloses a back-contact solar cell, its fabrication method, a cell string, a cell module, and a photovoltaic system. The back-contact solar cell includes: a silicon substrate configured with a first conductivity type and including a first surface and a second surface; a first doped layer configured with the first conductivity type and located on the first surface; a second doped layer configured with the second conductivity type and located on the first surface; the first and second doped layers are alternately arranged along a first direction and extend along a second direction; the first doped layer is wavy along the second direction; and / or, the second doped layer is wavy along the second direction; a first electrode layer; and a second electrode layer. In this invention, light undergoes diffuse reflection on the wavy doped layer surface, resulting in more light being reflected back into the cell, increasing the contact area between the electrode layer and the doped layer, reducing contact resistance, and improving photoelectric conversion efficiency.