432 results about "Light hole" patented technology

The utility model provides a lamp effect display structure and an atomization device thereof, the lamp effect display structure is applied to the atomization device, the lamp effect display structure comprises a panel assembly, the panel assembly is provided with a light guide groove and a light hole, the light guide groove is formed in the surface of the panel assembly, the light guide groove is provided with a reflection area, and the light emitting position of the light hole faces the reflection area; the light-emitting component is arranged on one side, opposite to the surface of the panel component, of the panel component and is opposite to the light-transmitting hole; light emitted by the light-emitting assembly is projected to the reflection area through the light-transmitting hole, and the reflection area can reflect the light emitted by the light-emitting assembly to the surface of the panel assembly. According to the panel assembly, the light guide groove is formed in the panel assembly, the light emitted by the light transmitting hole is reflected through the reflection area formed by the light guide groove, then the direct light emitting mode is avoided, the discomfort brought to a user by light emitting of the light transmitting hole is reduced, and the use comfort degree is improved.

The utility model provides a diaphragm switching device and laser equipment, the diaphragm switching device comprises a rotating mechanism and a plurality of diaphragm discs, the plurality of diaphragm discs are arranged at intervals along the extension direction of a light path, the diaphragm discs are provided with at least one through hole and a plurality of mounting holes, and the at least one through hole and the plurality of mounting holes are sequentially arranged along the circumferential direction of the diaphragm discs. The mounting hole is used for mounting a diaphragm, the diaphragm disc is mounted on the rotating mechanism and rotates through the rotating mechanism, and the diaphragm disc can rotate to enable a light hole of the diaphragm mounted on the through hole or the mounting hole to be located on a light path. The number of the diaphragms with different apertures can be increased through the arrangement of the plurality of diaphragm discs, the problem that the number of the diaphragms is insufficient due to the size limitation of a single diaphragm disc is solved, the aperture specifications of the selectable diaphragms are greatly increased, and rapid switching of the diaphragms with different apertures can be realized without dismounting and replacing the diaphragm discs. And the downtime and manual operation errors are effectively reduced.

A compensation type color mixing system comprises a light source, a light through hole formed in a main light path, three single-color annular light filters arranged on a light emitting light path in parallel at intervals and a driving device used for driving the light filters to rotate, and the three light filters are the C light filter, the M light filter and the Y light filter respectively. A light-transmitting area and a color area which are annularly arranged and connected end to end are arranged on the optical filter; the light source is characterized by further comprising at least one color complementing piece which is arranged on a light emitting path, has the same color type as the light filter and is arranged adjacent to the light filter in parallel at intervals; the shape, the size and the color area shape and the size of the light filter are the same as those of the color complementing piece, the linear gradual change direction of the color area of the light filter is opposite to the light emitting direction of the color complementing piece, and part of the color area of the color complementing piece is selectively and statically arranged on a main light path.

The invention relates to the technical field of gas sensing and optical detection, in particular to an annular multi-pass absorption cell and a detection method thereof.The annular multi-pass absorption cell comprises a reflecting mirror, the reflecting mirror is a cylinder with the two ends open, and a reflecting film is arranged on the inner wall of the reflecting mirror to form a continuous annular optical reflecting surface; the end cover assemblies are arranged at the openings in the two ends of the reflecting mirror, and a closed gas cavity is defined by the end cover assemblies and the reflecting mirror; an incident light hole and an emergent light hole are formed in the cylinder wall of the reflecting mirror and are respectively used for guiding a detection light beam to enter and exit from the gas chamber. The cylindrical reflector with two open ends is adopted, and an annular optical reflecting surface is formed on the inner wall of the cylindrical reflector, so that complex optical paths of discrete components in a traditional absorption cell are integrated in a single structure, the innovative design remarkably improves the system integration level, effectively compresses the size, can realize a longer absorption optical path in a limited space, and improves the absorption efficiency. The sensitivity of gas detection is greatly improved.

The utility model discloses a low-concentration infrared carbon dioxide sensor probe which comprises a shell, a PCB (Printed Circuit Board), an infrared light source, a detector, a gas chamber mounting seat and a gas chamber upper cover, the air chamber upper cover is arranged at the bottom of an inner cavity of the shell, the air chamber mounting seat is arranged in the inner cavity of the shell and located above the air chamber upper cover, the infrared light source and the detector are arranged in the air chamber mounting seat and electrically connected with the PCB, the PCB is located at the top end of the air chamber mounting seat, and the air chamber mounting seat is arranged in the air chamber mounting seat. The inner cavity of the air chamber upper cover and the bottom wall of the air chamber mounting seat form an air chamber, and the bottom wall of the air chamber mounting seat is provided with a light source mounting hole for an infrared light source to pass through and a light outlet hole for a detector to receive infrared light. The utility model provides a low-concentration infrared carbon dioxide sensor probe which can improve the detection precision of low-concentration carbon dioxide.

The embodiment of the invention discloses intelligent glasses, a shielding detection device and electronic equipment, and is characterized in that a sensor assembly is arranged in a mounting cavity of a shell and is aligned with a light hole of the shell, and the sensor assembly comprises an ambient light sensor, a proximity sensor and an infrared light source; at least two visible light sources are arranged in different radial directions of an ambient light sensor, a control circuit controls a visible light source group to emit indication light, controls an infrared light source to emit infrared light, and determines the shielding state of a window according to at least one of a first detection signal of the ambient light sensor and a second detection signal of a proximity sensor. The indication light emergent area and the shielding detection light incident area share the same light hole, the condition that shielding detection fails when only the indication light emergent area is shielded is avoided, and the field angle of the ambient light sensor is relatively symmetrical in all directions through the position arrangement of the visible light source, so that the shielding detection accuracy is improved. And the shielding detection sensitivity and accuracy can be improved.

The embodiment of the invention provides a display module and electronic equipment. The display module and the electronic equipment are used for improving the phenomenon that an ambient light opening of the display module is subjectively visible in the related technology. The display module comprises a back plate, a second light shielding layer and a first light shielding layer which are stacked in the first direction. In the first light shielding layer, the first pixel hole is filled with a light filtering layer, and the first light transmitting hole is filled with a first light shielding part and a first light transmitting material. In the second shading layer, second pixel holes are filled with light-emitting units, the second pixel holes and the first pixel holes are arranged in the first direction, and second light-transmitting holes are filled with second light-transmitting materials. The orthographic projection of the second light-transmitting hole on the back plate is located within the orthographic projection of the first light-transmitting hole on the back plate, and at least part of the orthographic projection of the second light-transmitting hole on the back plate avoids the orthographic projection of the first shading part on the back plate. The first light shielding part can shield the packaging layer and the touch control layer exposed in the first light hole, so that reflected light is reduced, and the phenomenon that the ambient light hole is visible is improved.

The application provides a light path cutter, which comprises a main disc and a first adjusting assembly, wherein the first adjusting assembly comprises a first transmission motor and a cutting assembly; a first light transmission hole is arranged in the middle of the main disc; the first transmission motor is fixed on the main disc; the cutting assembly is in transmission connection with the first transmission motor through a connecting belt, so that the first transmission motor drives the cutting assembly to rotate to shield the first light transmission hole and obtain a light hole effect with different shapes. In the light path cutter, the cutting assembly is connected with the transmission motor through the connecting belt, the cutting assembly is directly fixed on the connecting belt, fewer motors can be used to control the cutting assembly, the structure is simpler, and more abundant light hole effects can be obtained.

The invention discloses a display panel and a display device. The display panel comprises a light-emitting functional layer located on one side of the substrate; the light-emitting functional layer is provided with a plurality of pixels, and the plurality of pixels comprise a plurality of first pixel columns and a plurality of second pixel columns which are alternately arranged along a first direction; the pixel circuit layer comprises a plurality of pixel circuit columns arranged in the first direction, pixels, with the same light emitting color, in the first pixel column and the adjacent second pixel column are connected with corresponding pixel circuits through electrode connecting lines respectively, and the connected pixel circuits are connected with the same data line; the filter layer is located on the side, away from the substrate, of the light-emitting functional layer; the filter layer comprises a plurality of ambient light holes, and orthographic projections of the electrode connecting lines and the data lines on the substrate are not overlapped with orthographic projections of the ambient light holes on the substrate. The power consumption of the display panel can be reduced, and the transmittance of the display panel to ambient light is improved.

1. The name of the design product: mouth lamp (8 holes). 2. The use of the design product: mouth lamp for the illumination of the mouth of a patient by a dentist. 3. The design points of the design product: the layout design of the lamp part in the front view. 4. The picture or photo that best indicates the design points: front view.

The utility model relates to the field of medical equipment, in particular to a monitoring probe fixing device which comprises a fixing band, an installation window is arranged on the fixing band, a fixing seat is arranged on the installation window, a groove matched with a monitoring probe in shape is formed in the fixing seat, a light hole is formed in the bottom wall of the groove, and a light source is arranged in the light hole. And a limiting cover capable of being opened and closed is arranged at the opening part of the groove. According to the monitoring probe fixing device, the fixing belt is arranged, the monitoring probe is detachably connected with the fixing belt, when a patient needs to move, the limiting cover is opened, the monitoring probe is taken out, the fixing belt does not need to be taken down from the arm of the patient, repeated binding and disassembling operation is avoided, use is easier and more convenient, and the cost is reduced. And the patient acceptability is higher.

The utility model relates to an infrared optical filter switcher, a day and night switching camera module and an electronic device, comprising: a housing, the middle of which is provided with a light hole; the motor is arranged on the first side of the shell; the driving rod is arranged on the first side of the shell, and one end of the driving rod is connected with an output shaft of the motor; the sliding rod is arranged on the second side of the shell; the IR assembly comprises a support, an optical filter and a light-transmitting piece, the optical filter and the light-transmitting piece are arranged on the support, the first side of the support is connected to the driving rod, the second side of the support is connected to the sliding rod, and when the motor works, the IR assembly is driven by the driving rod to linearly move in the direction of the sliding rod; the sliding groove structure is arranged at the position close to the first side of the support, a sliding groove extending in the axial direction of the sliding rod is formed in the sliding groove structure, one part of the first side of the support extends into the sliding groove and can move along the sliding groove, and in the whole moving process of the IR assembly, one part of the support is located in the sliding groove all the time. According to the utility model, stable sliding of the IR assembly can be ensured.

The present invention relates to the technical field of photocatalytic hydrogen evolution, and in particular to a preparation method and application of a MOF-derived In2S3 / ZnIn2S4 composite material for photocatalytic hydrogen evolution, comprising: preparation of S1 and a MIL-68 precursor, preparation of S2 and In2O3, and preparation of S3 and an In2S3 / ZnIn2S4 composite material; the preparation operation process of the In2S3 / ZnIn2S4 composite material of the present invention is simple, and the simultaneous generation of In2S3 and ultrathin nanosheets In2S3 / ZnIn2S4 is successfully achieved; n2S3 and ZnI A heterojunction structure is constructed between n2S4; this heterojunction has unique structural characteristics, and through the synergistic effect of the built-in electric field, electrons and interface structure, it effectively enhances the photocatalytic hydrogen evolution activity; the retention of the MOF morphology leads to the high porosity of In2S3 / ZnIn2S4, and the ZnIn2S4 thin nanosheets shorten the charge diffusion path of the light hole in water, ensuring sufficient light absorption, thereby exposing more catalytic active centers; the preparation of metal organic framework-derived In2S3 / ZnIn2S4 composite materials has excellent performance advantages in the field of photocatalytic hydrogen evolution.

The utility model discloses a kind of unitization module automobile rear tail light, including lamp holder shell;Through screw fixed in the decorative shell of lamp holder shell, decorative shell has L type lamp cavity and two strip-shaped lamp cavities located in L type lamp cavity upside;Wherein, strip-shaped lamp cavity is provided with two concave lamp bowl parts, and the installation lamp hole of concave lamp bowl part upside is respectively provided with, installation lamp hole is provided with light source assembly outside, and light source assembly has the lamp pearl of inlaying into installation lamp hole, and outside is provided with radiator;L type lamp cavity is installed lamp strip, and outside cover is provided with light guide cover, and light guide cover is provided with vertically arranged reflector, reflector width gradient changes, and have multiple reflective steps.The unitization module automobile rear tail light of the utility model has the advantages of simple structure, easy to assemble and maintain, good light indicating effect, excellent heat dissipation performance and the like, and is suitable for popularization and application on various vehicles.

The zenith lens comprises a zenith lens body, an image sensor and a light path switching mechanism, the image sensor and the light path switching mechanism are arranged in the zenith lens body, and a shell of the zenith lens body is provided with an eyepiece fine adjustment interface and a light through hole opposite to the image sensor; the light path switching mechanism comprises a mounting bracket on the body, a rotating shaft arranged in the mounting bracket in a penetrating manner, and a reflector bracket fixedly connected with the rotating shaft, and the rotating shaft rotates relative to the mounting bracket under the driving of the steering engine; a reflector is arranged on one side, facing the eyepiece fine tuning interface, of the reflector bracket, and the reflector bracket does not interfere with a light path from the light through hole to the image sensor at the first working position; and when the reflector bracket is located at the second working position, the light passing through the light through hole is transmitted to the eyepiece fine tuning interface after being reflected by the reflector on the reflector bracket. The zenith mirror is provided with the imaging sensor, and different light path structures capable of being flexibly switched are additionally arranged to integrate an imaging mode function and a visual mode function.

The infrared spectrometer sample clamp comprises a back plate, a rotating disc, a mounting plate, a rotating ring and a moving plate, a light-transmitting window is formed in the back plate, a thin circular plate is rotatably mounted on the back plate, a circle of light-transmitting holes are formed in the thin circular plate around the center point, the diameter sizes of the five groups of light-transmitting holes are sequentially reduced, and the diameter sizes of the five groups of light-transmitting holes are gradually reduced. A gear ring A is installed on the outer ring of the thin circular plate, a connecting plate is installed on the back plate, a rotating disc is rotatably installed on the connecting plate, a rotating handle is installed on the rotating disc, a gear ring B is installed on the outer ring of the rotating disc, and the gear ring B is meshed with the gear ring A. According to the utility model, the thin circular plate is rotated by rotating the turntable to adjust the light holes with different sizes to correspond to samples, so that the light holes can be replaced according to the samples with different sizes, the problem that a test spectrogram result is influenced by a light leakage condition is avoided, the light holes are adjusted more conveniently and quickly, and the test efficiency of the infrared spectrometer is improved.

The invention discloses a solar panel structure capable of improving the illumination utilization rate, and relates to the technical field of photovoltaic modules. The device comprises a solar cell panel and a sunlight collecting cover assembly. The solar cell panel is fixedly provided with a sunlight collecting cover assembly used for improving the illumination intensity received by the light receiving face of the solar cell panel. The sunlight collecting cover assembly comprises a collecting cover grid plate and a mounting plate; light transmitting holes are uniformly arrayed in the collecting cover grid plate, and a mounting plate is fixed at the edge of the collecting cover grid plate; the mounting plate is fixedly mounted on the solar cell panel through bolts; the light hole is of an inverted table-shaped structure; the inner wall of the light hole is coated with a reflective film A. According to the invention, through the action of the sunlight collection cover assembly, almost all sunlight received by the whole solar cell panel is concentrated to the solar cell piece, so that the light receiving surface of the solar cell panel receives all sunlight and the sunlight is effectively utilized; the solar cell panel has the advantage of improving the effective utilization rate of the solar cell panel to sunlight.

The utility model discloses a composite multilayer board processing multi-angle adjusting device, which comprises a workbench and an adjusting seat, the outside of the adjusting seat is provided with a precision detection mechanism, the precision detection mechanism comprises a mounting sleeve, a laser pen, a light hole, an assembling hole and an assembling column, the top of the workbench is provided with an annular rotating groove, the inner cavity of the annular rotating groove is provided with a rotating ring, and the rotating ring is provided with a rotating shaft. The top of the rotating ring is provided with a precision detection plate, the front face of the precision detection plate is provided with a precision detection hole, the top of the workbench is provided with an annular mounting groove, an inner cavity of the annular mounting groove is provided with a scale ring, the front face of the precision detection plate is provided with an indicating rod, and the front face of the annular rotating groove is provided with a locking assembly. According to the multi-angle adjusting device, the precision detecting mechanism is arranged, and the mounting sleeve, the laser pen, the assembling column, the rotating ring, the precision detecting plate, the precision detecting hole and the scale ring are matched with one another, so that a worker can be assisted in detecting whether the adjusting precision of the multi-angle adjusting device in the automatic processing equipment is reduced or not, and the quality of the processed composite multilayer board is ensured.

The application relates to a kind of to the type photoelectric sensor and assembly method, including the transmitter and receiver needing symmetrical arrangement, the receiver is used to receive the light signal emitted by the transmitter, the transmitter includes first shell, transmitting lens, first PCB board, lamp plate and transmitting lamp, the transmitting lens is inlaid on the first shell, lamp hole is formed in the lamp plate, the transmitting lamp is welded on the lamp plate, and is clamped in the lamp hole, the first shell is provided with a limiting block, the lamp plate is installed on the limiting block, the first PCB board is inserted on the limiting block, and is clamped with the lamp plate, so that the wick of transmitting lamp and the optical center of transmitting lens can be aligned.The application has the effect that the wick of transmitting lamp and the optical center of transmitting lens are aligned.

The utility model discloses a car lamp structure, relates to the technical field of vehicles, the car lamp structure comprises a bumper, a lampshade, a daytime running light and a headlight, the bumper is provided with a light emitting hole, the lampshade is arranged on the inner side of the bumper, the lampshade comprises a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate which are sequentially connected and integrally formed, a first containing space is defined by the first connecting plate and the second connecting plate, a second containing space corresponding to the light emitting hole is defined by the second connecting plate, the third connecting plate and the fourth connecting plate, the daytime running light is arranged in the first containing space, and the headlight is arranged in the second containing space. According to the technical scheme, the technical problems that an automobile lamp structure is complex in assembly and high in management cost can be solved.

The invention provides a display panel. The display panel comprises a substrate; the isolation structure is located on one side of the substrate and comprises isolation openings and light-transmitting openings which are arranged at intervals; a light emitting device located in the isolation opening; the pixel packaging unit is located on the side, away from the substrate, of the light-emitting device and at least partially located in the isolation opening; at least part of the light-transmitting hole packaging unit is located in the light-transmitting opening, and the light-transmitting hole packaging unit comprises a light-transmitting hole packaging extension part which extends to one side, far away from the substrate, of the isolation structure; at least part of the light hole packaging extension parts are located on the sides, away from the substrate, of at least part of the adjacent pixel packaging extension parts. In the display panel adopting the isolation structure, the light-transmitting hole packaging units at the light-transmitting openings are set as the pixel packaging extension parts covering the adjacent pixel packaging units, so that the structural stability of the pixel packaging units can be improved, the risk that the pixel packaging units are damaged in the manufacturing process is reduced, and the display quality is improved. And the packaging reliability of the pixel packaging unit is ensured.

The invention discloses laser coaxial calibration equipment applied to laser equipment and a calibration method of the laser coaxial calibration equipment. The laser coaxial calibration equipment comprises a camera module and a core development board, wherein the camera module is used for shooting a nozzle and red light; and the core development board is used for receiving and processing information of the camera module and then judging the relative position of the center of the contour circle of a light through hole of the nozzle and the center of the contour circle of the red light. The whole-process visual operation of laser coaxial operation is carried out through the terminal equipment and the wireless connection equipment thereof, so that the coaxial operation efficiency is higher; the coaxial operation process can be displayed in an operation interface in real time, and repeated naked eye judgment centering and coaxial screw adjustment amplitude control are not needed. Meanwhile, the coaxial precision is more objective and stable; whether coaxiality is in place or not is automatically judged according to the circle center pixel distance of the red light contour circle and the nozzle light through hole contour circle, and manual experience-based judgment is not needed. Spot laser does not need to be emitted, and safety is higher; and laser coaxiality can be realized only by means of red light of the laser.

The utility model discloses a cross-shaped light-permeable switch elastic sheet which comprises a switch elastic sheet body, the switch elastic sheet body comprises an outer convex ring, the inner side of the outer convex ring is fixedly connected with an inner concave ring, the outer side of the outer convex ring is fixedly connected with a supporting ring, and the outer side of the circumference of the supporting ring is fixedly connected with a plurality of supporting legs. The top of the switch elastic sheet body is punched to form a light hole, the switch elastic sheet body is a stainless steel switch elastic sheet, the outer side of the switch elastic sheet body is provided with a wear-resistant layer, the inner side of the switch elastic sheet body is provided with an adhesion layer, and the wear-resistant layer and the adhesion layer are nickel-plated layers. According to the utility model, the arrangement of the light-transmitting hole facilitates the transmission of the light of the indicating lamp, thereby facilitating the lamp tube indication of the switch elastic sheet at night, and further facilitating the diversified use of the switch elastic sheet.

The utility model discloses a kidney-shaped unthreaded hole sealing tool which is used for sealing a kidney-shaped unthreaded hole formed in a segmented mother board and comprises a semi-sealing assembly which is arranged on the inner side of the kidney-shaped unthreaded hole and comprises a kidney-shaped flange plate, a kidney-shaped flange sealing plate and a rubber gasket. The kidney-shaped round flange plate comprises an annular structure surrounding the periphery of the kidney-shaped round unthreaded hole and a welding part formed by extending downwards from the outer edge of the annular structure and used for being welded to the kidney-shaped round flange sealing plate. The upper surface of the annular structure is used for being bonded to the rubber gasket. Each pressing bolt assembly comprises a bolt and a clamping plate, each clamping plate comprises an upper clamping arm, a lower clamping arm and a connecting plate used for connecting the upper clamping arm and the lower clamping arm, the upper clamping arms are arranged above the segmented mother plates, one ends of the bolts penetrate through threaded holes of the upper clamping arms to abut against the upper surfaces of the segmented mother plates, and the other ends of the bolts penetrate through threaded holes of the lower clamping arms to abut against the upper surfaces of the segmented mother plates. The lower clamping arm abuts against the lower surface of the annular structure of the kidney-shaped flange plate, the bolts are screwed down, the lower clamping arm tightly presses the rubber gasket to the inner side of the periphery of the kidney-shaped unthreaded hole, and the kidney-shaped unthreaded hole is sealed through the compression bolt assemblies.

The utility model provides a laser head light path mechanism and laser processing equipment, the laser head light path mechanism comprises a first seat body, the first seat body is internally provided with a first light through hole, and the first light through hole is provided with a first light inlet and a first light outlet; the first reflecting mirror and the second reflecting mirror are respectively arranged in the first light through hole, the first reflecting mirror is close to the first light inlet, and the second reflecting mirror is close to the first light outlet; a second light through hole is formed in the second base body, the second light through hole is provided with a second light inlet and a second light outlet, and the second light inlet is close to the first light outlet; the third reflecting mirror and the fourth reflecting mirror are respectively arranged in the second light through hole; and the first driving structure is arranged on the first seat body, and the first driving structure is in driving connection with the second seat body. The light path mechanism of the laser head can ensure the precision of the emitted light.

A multi-stage single-cone-shaped multi-gas-port type dynamic gas lock device adopts a multi-stage single-cone-shaped pipeline structure, the cross section of an unthreaded hole channel in the center of a pipeline is in a multi-stage single cone shape, the unthreaded hole channel is formed by connecting a plurality of single-cone-shaped pipeline sections in series, and gas inlets and gas suction ports are formed in the pipeline walls of the single-cone-shaped pipeline sections; a continuous repeated flow channel form expanding step by step is formed in the central axis direction of the light hole channel, diffusion of pollutants is blocked for multiple times, it can be guaranteed that continuously-contracted extreme ultraviolet light is transmitted in the light hole channel, it can also be guaranteed that clean gas introduced from the gas inlet can rapidly flow into a projection objective lens cavity and a silicon wafer table cavity, and the effect of improving the quality of the projection objective lens is achieved. The inhibition efficiency of pollutants is effectively improved; by means of the air suction ports distributed in the pipe wall of the light hole channel in a multi-stage mode, clean gas wrapped with pollutants in the light hole channel can be rapidly exhausted, the cleaning requirement of the projection objective lens cavity is met, the extreme ultraviolet transmittance is further improved, and meanwhile the phenomenon that a gas high-pressure area is generated to damage the pipe wall of the light hole channel is avoided.

The utility model discloses a sound temperature optimization structure for a magnetic axis keyboard, which comprises a mainboard PCBA, lamp holes, positioning holes and circular holes, the inner side of the mainboard PCBA is provided with the lamp holes at equal intervals, the inner side of the mainboard PCBA is provided with the positioning holes at equal intervals, the inner side of the mainboard PCBA is provided with the circular holes at equal intervals, the diameter of the circular holes is 0.2 mm-8. 5mm, and the error is + / -0.1 mm; the opening depth of the circular opening is 0.2 mm to 1.5 mm, and the error is + / -0.1 mm; the hole position of the circular hole is located between two positioning holes in the main board PCBA; the hole position of the circular hole is located on the front face of the main board PCBA, namely the face making contact with a magnetic shaft, and the bottom of the circular hole cannot be opened. According to the sound temperature optimization structure for the magnetic axis keyboard, under the condition that the structure, the installation mode and material selection of an existing magnetic axis keyboard are not changed, fine machining is conducted on the main board PCBA, and therefore sound production and temperature influence of the magnetic axis keyboard are improved under the condition that the precision of the magnetic axis keyboard is not affected.

The invention discloses a large-view-field high-resolution microscopic module which comprises a supporting plate, an imaging assembly located at the top of the supporting plate, a dual-mode imaging switching assembly and a light source output assembly which are located at the bottom of the supporting plate, and an observation module located below the dual-mode imaging switching assembly. The dual-mode imaging switching assembly comprises an adjusting bin, a bright field reflection module and a fluorescence excitation module, wherein the bright field reflection module and the fluorescence excitation module are movably arranged in the adjusting bin. The adjusting bin is provided with an emergent hole communicated with the imaging assembly, a light hole communicated with the light source output assembly and an observation hole communicated with the observation module. According to the arrangement, the bright field reflection module and the fluorescence excitation module are moved to the light path communication position when needed, so that switching of imaging modes can be achieved, the switching structure is simple and easy to operate, and the number of imaging channels can be effectively guaranteed; and the clear aperture of the switching mechanism can be flexibly configured according to the pupil diameter of the objective lens, so that the effects of large view field and high-resolution imaging are achieved, and the application scene is wider.

The utility model discloses a lighting device which comprises a lamp holder, an installation groove is formed in the lamp holder, a circuit board is arranged in the installation groove, and a plurality of LED lamp beads are arranged on the circuit board. A lamp cover is arranged on the mounting groove, a plurality of lamp holes are formed in the lamp cover, different LED lamp beads are covered with the lamp holes, and the outer circumferential wall of the lamp cover makes contact with the inner circumferential wall of the mounting groove to shield the mounting groove; fixing clamps are arranged on the outer walls of the two sides of the lamp holder, locking pieces are arranged on the fixing clamps, the locking pieces penetrate through the fixing clamps to be matched with the lamp holder in a locking mode, when the locking pieces are not matched with the lamp holder in a locking mode, the fixing clamps and the lamp holder rotate relatively, and when the locking pieces are matched with the lamp holder in a locking mode, the fixing clamps and the lamp holder are fixed relatively. According to the utility model, the structure complexity can be reduced while the angle is adjusted.

The invention relates to the technical field of pollutant detection, and discloses a pollutant multi-mode sensing device, which comprises a pipeline, a lower shell, an upper shell, a light source module, a plurality of light receiving modules and a control module, a plurality of light through holes with different angles are formed in the middle of the pipeline, and the light source module and the light receiving module are arranged on the outer sides of the light through holes with the different angles respectively. The light source module is used for emitting detection light with a specified wavelength to the inner side of the pipeline; the detection light generates scattered light after passing through the fluid to be detected, and the light receiving module is used for receiving the scattered light; and the control module is used for calculating the mass concentration of each component in the fluid to be measured. More comprehensive information is obtained through multi-angle measurement, so that the characteristics of the sample are analyzed more accurately.