50results about How to "Short optical path" patented technology

The invention provides a photoelectric sensor and a manufacturing method thereof. The photoelectric sensor comprises a pixel unit arranged on the substrate; and the pixel unit includes a photodiode and a thin-film transistor. A drain structure of the thin-film transistor servers as a cathode structure of the photodiode, so that the area occupied by the pixel can be reduced and the resolution ratio of the photoelectric sensor can be improved. Moreover, the anode structure and the cathode structure of the photodiode are arranged in a transverse mode, so that the thickness of the photoelectric sensor can be effectively reduced and thus the photoelectric sensor has advantages of small size and high resolution ration. Besides, the manufacturing method of the photoelectric sensor can be combined with the traditional LCD manufacturing method, thereby simplifying the production process of the photoelectric sensor, reducing the production cycle, and effectively reducing the production cost.

The invention discloses a micro-spectrometer based on microelectronic mechanical system technology (MEMS). It contains fiber connector, entrance slit, reflector, blazed grating, focusing mirror and detector etc. Reflector is made by MEMS, whose surface can do cycle motion controlled by external signal. Blazed grating is dispersion element, together with reflector to form spectroscopic light path system. In design of light path, after leading by fiber connecter, tested optical signal is split by reflector and blazed grating to monochromatic light with special wavelength, which is converged into detector by focusing mirror. Depending on cycle motion of reflector surface, monochromatic light with various wavelength enter detector to complete spectrum scanning. The spectrometer based on MEMS has merits of small capacity, extensive spectrum range and low cost etc.

The invention provides a superposing coupling method of semiconductor laser array and optical fiber array, where the semiconductor is a 2D array superposed of many one-dimensional semiconductor laser arrays, it uses column lens and column lens array to collimate the light beams emitted from many one-dimensional semiconductor laser arrays, then combines the collimated light beams into a beam, which is focused by lens array and coupled in multimode optical fiber array. These one-dimensional semiconductor laser arrays have the same number of lighting cells, the lighting cells of a one-dimensional semiconductor laser array basically aligns horizontally in the slow axis direction, the multimode optical fiber array and the one-dimensional semiconductor laser array have the same number of multimode receiving optical fibers, and the period P' of the multimode optical fiber array is the same as the period P of the one-dimensional semiconductor laser array.

The invention relates to the stereoscopic microscope field, provides a lighting method for a stereoscopic microscope; a sample to be observed is arranged below an observation point, the observed sample is lightened by the light source. The light source is formed below the observed sample, and the light source is located outside the imaging light ray region of the observation point; for dark field illumination, a baffle is located between the light source and the sample, partial scattered ray of the light source in the imaging light ray region can pass through the baffle; for light field illumination, a light through piece is located between the light source and the sample, and all light rays in and out the imaging light ray region can pass through the light through piece. In addition, according to the lighting method, a lighting device and a stereoscopic microscope are provided. The lighting device is used for offering the light field illumination and dark field illumination for the stereoscopic microscope, the continuous change of the observation contrast can be achieved and the method and the method are suitable for observing various samples.

The invention discloses miniature spectrograph which is based on a stepping motor-based and comprises an optical fiber connector, an entrance slit, a reflecting mirror, a blazed grating, a focusing mirror and a detector, wherein, the reflecting mirror includes an external framework as well as a plane mirror and a stepping motor which are arranged in the external framework. By adopting the stepping motor and a novel light path structure, the miniature spectrograph provided by the invention is characterized by good applicability and simple light path structure, and can overcome the defects of large signal noise, complicated optical structure and the like in the folding structure light path of the prior miniature spectrograph. In addition, the miniature spectrograph provided by the invention has the advantages of wide applicable spectral range, flexible use and portability, and is characterized in that no error is introduced, no change of internal resistance occurs, and the plane mirror can rotate at an angle of 360 DEG.

The invention discloses a multi-mode waveguide 90-degree turning array chip comprising a chip body including a substrate, waveguides, and a coating layer. The coating layer enables the waveguides to coat the substrate; the waveguides are parallel to each other and are arranged at equal intervals; and the end surface of one side of each waveguide is a totally reflection surface. The number of the waveguides and the waveguide interval can be adjusted according to specific situations. No lens is introduced; the optical path is short; and light integration can be realized well. Because of direct coupling, the adding and pasting procedures of the lens array are reduced, the coupling precision is high. And the overall stability of the optical path is high. The processing technology of the waveguide array is mature and the cost is low. No expensive lens design and high mode opening cost are needed; and the early-stage research and development investment is reduced. The optical waveguide array is made of a quartz glass material, so that an aging problem at a high temperature is avoided; and reliability on the high or low temperature condition is higher.

The invention discloses a small collimation system used for a single-core surface mounted device LED, and relates to the field of non-imaging optics, in particular to a small LED collimation lens. The problems that an existing LED lighting system is large in divergence angle, low in illumination due to remote lighting and the like are solved. The small collimation system comprises the LED collimation lens, the single-core surface mounted device LED and an LED and collimation lens connecting device. The LED collimation lens comprises an inner full-reflection collimation part and a refraction collimation part. According to the inner full-reflection collimation part, light with a large angle formed between the light and an optical axis is refracted through a first face and collimated through a second face in a full-reflection mode and emerges through a third face. According to the refraction part, light with a small angle formed between the light and the optical axis is collimated through a fourth face and a fifth face in a refraction mode. Light emitted by the LED can exit at a small angle after passing through the two parts of the lens. The designed LED and collimation lens connecting device can accurately fix an LED light source on the focal point of the collimation lens, and meanwhile the heat dissipation of the LED is accelerated due to pure aluminum material. The emergent light passing through the collimation system is good in collimation performance.

The invention discloses a distance measurement binocular telescope optical system, which solves the problems that the optical system in the prior art is unreasonable in structure, increases the volume of a product, is not beneficial to product adjustment and product stability, and increases the cost. The system comprises an objective lens group and an eyepiece group, wherein a first prism group and a second prism group which are in mirror symmetry are arranged between the objective lens group and the eyepiece group; the first prism group and the second prism group comprise first prisms, second prisms and roof-shaped prisms; the roof-shaped prisms and the second prisms are respectively arranged on two sides of the first prisms; the roof-shaped prisms face the objective lens group; the second prisms face the eyepiece group; the second prisms are glued with the first prisms to form a beam splitting prism group; and a display component is arranged on the outer side of the beam splitting prism group. The distance measurement binocular telescope optical system is compact in structure, is beneficial to the spatial arrangement of the light path structure, reduces the volume of the product and simultaneously reduces the requirements on the manufacture of the display.

The invention discloses a trace substance detector with two fluorescence emission surfaces, and a detection method, and relates to an instrument used for detecting toxic and hazardous trace substances contained in environments, food, health care products, traditional Chinese medicines, cosmetics and the like in the technical field of spectrographic detection. The detector comprises an excitation unit, a first detection unit and a second detection unit, wherein the first detection unit is parallel to the second detection unit; the excitation unit is perpendicular to the first detection unit. Compared with a dual-waveband fluorescence intensity ratio detection system with a single fluorescence emission surface, the detector is not provided with a dichroic mirror or a fluorescence condensing lens on the basis of keeping the detection stability and an accuracy rate, so that a fluorescence loss is low; an optical path is short; the sensitivity is higher; a detection limit is lower. Under the equivalent condition of copper ion detection, by comparison of an optical system with two fluorescence emission surfaces and an optical system with a single fluorescence emission surface, the fluorescence detection strength is improved by 1.2 times and the detection limit is reduced from 0.03 mg/kg to 0.015 mg/kg. The detector is smaller in size and simple to operate, and can be used for on-site real-time quantitative rapid analysis and detection.

The present invention is projection optical system and its imaging module and imaging method. The projection optical system has one imaging module comprising a imaging error trimming prism, a isosceles triangle prism and a digital micro lens unit and one lens module comprising two lens combinations in optimal arrangement, so that it has 50 % reduced size compared with common projection optical system. The reduced projection optical system is easy to carry and has short optical path and optimal projection effect.

The invention discloses an OLED (Organic Light-Emitting Diode)- and OPD (Organic Photodetector)-based cascading vertical integration capillary electrophoresis chip. The OLED- and OPD-based cascading vertical integration capillary electrophoresis chip comprises arrayed organic thin-film light sources (OLEDs), a polarizer, a multi-channel capillary electrophoresis chip, a polarization detector and arrayed organic thin-film detectors (OPDs), wherein the OLEDs, the polarizer, the multi-channel capillary electrophoresis chip, the polarization detector and the OPDs are sequentially placed in a parallel and cascading manner; and an upper part and a lower part of each electrophoresis channel detection position respectively correspond to the single OLED and the single OPD. According to the OLED- and OPD-based cascading vertical integration capillary electrophoresis chip, the OLEDs and the OPDs which are made from organic photoelectric materials respectively are adopted, therefore, the easy integration with the multi-channel capillary electrophoresis chip is achieved; with the adoption of planar structural parallel cascading arrangement, the distance between every two devices is small, the optical length of a light path in transmission along the vertical direction is short, the optical loss is effectively lowered, the improvement of system sensitivity is facilitated, and the accuracy in detection is improved through the controlling of the diameter of an exciting light beam by a pinhole; and polaroids which are arranged in a mutually-vertical manner are used for light-filtering, excitation light and stray light are effectively filtered out, therefore, the OLED- and OPD-based cascading vertical integration capillary electrophoresis chip is applicable to a detection system with wider spectral range.

The invention discloses a polarized water turbidity measurement device, system and method. The polarized water turbidity measurement device is characterized by comprising a light source (1) which is used for emitting monochromatic light I to a first lens (2), wherein the monochromatic light I sequentially penetrates through the first lens (2) and a first polarizing film (5) and is split into incident light Ia and scattered light Ib by a light splitting mirror (8), the included angle between the incident light Ia and the scattered light Ib is 90 degrees, the scattered light Ib enters a first photoelectric detector (7), 90-degree surface scattered light I<a1> formed after the incident light Ia enters a measurement groove (3) sequentially penetrates through a second polarizing film (6) and a second lens (4) and enters a second photoelectric detector (9); a temperature measurement sensor is arranged in the measurement groove (3). According to the device, the system and the method, by virtue of a data processing manner of a least square support vector machine, the temperature is compensated, the measuring error is eliminated, and the measurement accuracy is improved.

The invention relates to the field of near-to-eye display technologies, in particular to a near-to-eye display device. The near-to-eye display device comprises a left-eye optical path system and a right-eye optical path system, wherein each of the left-eye optical path system and the right-eye optical path system comprises a first optical path and a second optical path, light emitted by the display device enters a left eye and a right eye via the first optical paths separately, and ambient light enters the left eye and the right eye via the second optical paths separately; the initiating end of each second optical path is provided with a first detachable baffle plate, and a second detachable baffle plate is arranged between the left-eye optical path system and the right-eye optical path system. By arranging the first detachable baffle plates at the entering ends of the ambient light, switching of VR display and AR display is realized; by arranging the second detachable baffle plate between the left-eye optical path system and the right-eye optical path system, conversion of 3D image display and 2D image display is realized; and the use performance of the near-to-eye display device is significantly improved, the user experience is enhanced, and the compatibility is improved.

The invention discloses a multichannel wavelength division multiplexer for a free space, and the wavelength division multiplexer comprises a plurality of wavelength division multiplexing filters, a plurality of collimators, and a plurality of prisms. The collimators, the filters and the prisms form wavelength division multiplexing function units. The wavelength division multiplexing function unitsform the multichannel wavelength division multiplexer. The multichannel wavelength division multiplexer is characterized in that the wavelength division multiplexing filters are smaller in incident angle; the filter coating technology is easier to implement through the amplifying of the incident angles of the prisms, and the cost is lower.

The invention discloses a photoelectric conversion module for realizing optical power monitoring and a manufacturing method thereof. The photoelectric conversion module comprises a PCB, an optical fiber array component, a laser, a detector, a flexible board and a metal bracket. The detector is mounted to a first surface of the flexible board. A part corresponding to the detector on a second surface opposite to the first surface of the flexible board is connected to a lower end face of a metal bracket. The metal bracket is welded to the PCB such that the detector is placed to face laser. The end face of each optical fiber of the optical fiber array component has an angle with a set degree relative to the detector or the laser such that a part of laser is refracted to a detection surface ofthe detector and a part of laser is subjected to full reflection to be transmitted through the fiber array component after the laser emitted by the laser is emitted to the end face, and the light emitting power monitoring and optical transmission of the photoelectric conversion module are realized with fewest optical components, a smallest optical surface and a smallest optical distance, and the reliability of an optical path is improved.

The invention discloses a WDM demultiplexer based on a film interference filter. The WDM demultiplexer comprises a preceding-stage demultiplexer and a backward-stage demultiplexer, and the preceding-stage demultiplexer is arranged in front of a light beam incident port of the backward-stage demultiplexer; and the preceding-stage demultiplexer divides an incident light beam into an upper beam of light waves with a front half wavelength and a lower beam of light waves with a rear half wavelength correspondingly. When the upper beam of light waves and the lower beam of light waves are emitted inparallel, an up-and-down distance exists; the backward-stage demultiplexer is used for carrying out re-wave-dividing on the incident upper and lower beams of light waves; and the extensibility of a three-dimensional space in each direction is fully utilized, so that the demultiplexer (DeMUX) can be made more compact, light paths of some channels are relatively shortened, devices are convenient tocouple, and the demultiplexer with more wavelength channels can be better manufactured.