713 results about "Protective glasses" patented technology

The invention relates to the technical field of intelligent equipment management, in particular to an intelligent protective glasses equipment management method and system based on a cloud platform. The method comprises the following steps: monitoring corresponding dial scanning data, gas monitoring data and equipment external environment data in real time through a corresponding sensor built in intelligent protective glasses equipment, and uploading the data to a cloud platform; acquiring an equipment dial plate scanning use frequency, and performing dial plate scanning fault analysis and gas reading abnormity evaluation to obtain an equipment dial plate scanning fault probability and an equipment gas reading abnormity index; and carrying out equipment intelligent management analysis on the intelligent protective glasses equipment based on the equipment dial scanning fault probability and the equipment gas reading abnormal index so as to generate a cloud platform equipment abnormity maintenance management plan corresponding to the intelligent protective glasses equipment. According to the invention, comprehensive equipment state monitoring and accurate maintenance management work can be provided for the intelligent protective glasses, so that the use performance and user experience of the intelligent protective glasses can be improved.

The invention provides a projection lens, which sequentially comprises a first lens with positive focal power from a projection surface to an image source surface along an optical axis, a second lens with negative focal power and a third lens with positive focal power from the projection surface to the image source surface, the surface of the projection side of the second lens is a convex surface, and the surface of the image source side of the second lens is a concave surface; the surface of the projection side of the third lens is a concave surface, and the surface of the image source side of the third lens is a concave surface; the surface of the projection side of the fourth lens is a convex surface, and the surface of the image source side of the fourth lens is a convex surface; the surface of the image source side of the fifth lens is a convex surface; the surface of the projection side of the sixth lens is a convex surface; a prism; a protective glass; a piece of plate glass with changeable positions is arranged between the prism and the protective glass, and the plate glass can be located at a first position or a second position through a switching device. According to the projection lens provided by the invention, clear imaging at two different projection distances is realized through switching of the plate glass, and switching between a close shot and a long shot is completed.

According to the measuring equipment provided by the invention, based on the light path design of double Fizeau interferometers, the third quarter-wave plate is arranged between the first PBS beam splitter prism and the first protective glass, and the fourth quarter-wave plate is arranged between the second PBS beam splitter prism and the second protective glass; the first protection glass reflects part of incident light beams to the third quarter-wave plate and then reflects out of a light path after passing through the first PBS prism, and the second protection glass reflects part of incident light beams to the fourth quarter-wave plate and then reflects out of the light path after passing through the second PBS prism. Therefore, light reflected by the paired protective glass is prevented from entering the interferometer on the side, crosstalk is filtered out, and the measurement precision is ensured.

The utility model relates to a lens structure of a double-lens capsule endoscope, which comprises two capsule endoscope lenses with different imaging functions, namely a lens with a narrow-band imaging characteristic and a high-definition ultra-wide-angle lens, the optical system of the first lens comprises a first lens group, a first diaphragm, a second lens group and first protective glass; the first lens group comprises a meniscus negative lens with negative focal power, a convex-concave negative lens with negative focal power and a meniscus lens with positive focal power; the second lens group comprises a biconvex lens with positive focal power and a biconcave lens with negative focal power; the optical system of the second lens comprises a third lens group, a second diaphragm, a fourth lens group and second protective glass; the third lens group comprises a convex-concave positive lens with positive focal power; and the fourth lens group comprises a bonding lens and a convex-concave lens with positive focal power, and the bonding lens is formed by bonding a biconvex lens with positive focal power and a concave-convex lens with negative focal power and has the positive focal power. The lens can enlarge the view field coverage range and improve the detection accuracy.

The invention provides a projection lens, which sequentially comprises a first lens with positive focal power from a projection surface to an image source surface along an optical axis, a second lens with negative focal power and a third lens with positive focal power from the projection surface to the image source surface, the surface of the projection side of the second lens is a convex surface, and the surface of the image source side of the second lens is a concave surface; the surface of the projection side of the third lens is a concave surface, and the surface of the image source side of the third lens is a convex surface; the surface of the projection side of the fourth lens is a concave surface; the surface of the projection side of the fifth lens is a concave surface, and the surface of the image source side of the fifth lens is a convex surface; the surface of the projection side of the sixth lens is a convex surface, and the surface of the image source side of the sixth lens is a convex surface; a prism; a protective glass; plate glass is arranged between the prism and the protective glass, and the plate glass can be located at a first position or a second position through a switching device. According to the projection lens provided by the invention, clear imaging at two different projection distances is realized through switching of the plate glass, and switching between a close shot and a long shot is completed.

The utility model provides an irradiation-resistant underwater camera with a reflection lens, which comprises a metal middle cylinder main body, and the front end of the metal middle cylinder main body is hermetically connected with a front cover of protective glass with a lens. An imaging structure composed of an electric focusing lens, a lens reflecting prism, a photoreceptor, a circuit main board, a circuit auxiliary board and an imaging module is arranged in the metal middle cylinder body, the imaging structure is fixedly connected with a rear baffle through a lens fixing block and an inner support, and the tail end of the metal middle cylinder body is connected with a rear cover with a watertight connector in a sealed mode. The beneficial effects of the utility model are that the whole body employs a waterproof design, the circuit main board, the circuit auxiliary board and the imaging module all employ an irradiation-resistant circuit board structure, can be applied to an underwater environment with nuclear radiation for a long time, changes the layout of the photoreceptor and the imaging module, adds a lens reflecting prism as an auxiliary structure, improves the imaging structure, and improves the imaging efficiency. The underwater camera shooting imaging effect and the reduction of the width and the size of the camera in the production process are facilitated.

The invention provides an optical system of a laser radar transmitting lens. The optical system comprises a first lens, a second lens, a diaphragm, a third lens, a fourth lens, a fifth lens, an optical filter, protective glass and an image surface which are arranged in a direction from an object side to an image side. According to the invention, by reasonably using the lenses with specific shapes and structures and limiting the focal power of each lens, the field angle of the optical system is increased to 150 degrees and the relative illumination is greater than 90%, the radar detection field of view is wider and clearer, the F-theta distortion is less than 1%, the CRA is less than 1 degree, the detection distance and precision are improved, and the detection cost is reduced. According to the utility model, more accurate distance measurement data and farther detection distance can be provided, TTL is 29 mm, the size is small, miniaturization can be realized, the camera can be arranged in a vehicle, the matching of 2G3P glass and plastic enables the whole optical system to optimize high and low temperature excursion compensation, it is ensured that the lens does not have virtual focus at high and low temperatures, the cost is more advantageous, and the cost performance is higher.

The invention provides a blowing head and laser welding equipment, the blowing head comprises a body, the body is provided with a laser channel in a penetrating mode, the laser channel is provided with a light inlet end and a light outlet end, and a laser beam is transmitted to the light outlet end from the light inlet end; the protective glass is positioned on one side of the light inlet end; a blowing channel used for conveying protective gas into the laser channel is arranged on the side wall of the body in a penetrating mode. The end face, close to the light outlet end, of the body is provided with a spherical reflecting face which is concavely arranged towards the light inlet end, the spherical reflecting face and a space defined by a welded workpiece form a heat storage space, and the laser channel is communicated into the heat storage space. According to the method, the influence of protective gas on cooling of a welding spot area can be reduced, the laser absorption rate of a welded part is increased, and the welding depth and quality are guaranteed.

The invention belongs to the technical field of laser processing, and particularly relates to a laser processing head anti-splashing structure and a laser processing head. The anti-splashing structure of the laser machining head comprises a protective mirror, a nozzle and a stop assembly. Wherein the stop assembly is arranged between the protective mirror and the nozzle, but not limited to, and can also be arranged on the nozzle. The stop assembly comprises at least one first stop structure. In one case, the first stop structure is arranged outside the first channel. And under the other condition, the first stop structure is arranged in the first channel so as to be used for adsorbing and / or stopping substances such as splashes and chippings generated during machining. According to the technical scheme, the anti-splashing effect can be greatly improved, the protective glass is prevented from being damaged, and the service life of the protective glass is prolonged.

The invention relates to the technical field of cylindrical battery detection, in particular to a cylindrical battery surface detection light source and a detection method thereof.The cylindrical battery surface detection light source comprises a detection table, a heat dissipation shell is installed on the top face of the detection table, a light source box is installed on the heat dissipation shell, a top box is arranged on the light source box, and a lens body and a CCD camera body are installed above the top box; light source equipment is mounted on the top box, and protective glass is mounted on the top surface of the top box; the semi-transparent and semi-reflective lens is installed in the top box, the installation light equalizing plate is installed in the top box and installed in front of the semi-transparent and semi-reflective lens, the fixing support is installed in the heat dissipation shell, the second light equalizing plate bodies are installed on the top face of the fixing support, and the number of the second light equalizing plate bodies is two. The mounting positions of the two groups of second light equalizing plate bodies are mutually symmetrical, a groove is formed in the inner side wall of the detection table, and a first light equalizing plate body is mounted in the groove. The method has the effect of improving the accuracy of the detection result of the surface of the cylindrical battery.

The utility model relates to the technical field of industrial and medical instruments, in particular to an endoscope optical lens, which comprises protective glass, a first lens, a diaphragm, an optical filter and a second lens which are sequentially arranged along a light incident light path, the first lens and the second lens are both glass aspheric lenses, the first lens is a plano-concave lens, the second lens is a plano-concave lens, and the diaphragm is a diaphragm. The second lens is a biconvex positive lens, and incident light sequentially passes through the protective glass, the first lens, the diaphragm, the optical filter and the second lens and then is imaged so as to form an imaging surface; in the embodiment, through the cooperation of the protective glass, the first lens, the diaphragm, the optical filter and the second lens, a large view field is realized while the miniaturization of the overall structure of the lens is ensured, and the optical performances of high resolution, high stability and the like are met.

The invention discloses a building integrated photovoltaics (BIPV) integrated micro-ventilation passive unit type curtain wall system with a sunshade device, which comprises a curtain wall external corner upright post, an external facade glass panel, an indoor protective glass breast board, a curtain wall male upright post, a power generation glass module and a micro-ventilation opening fan module, and the other side of the micro-ventilation opening fan module is connected to a curtain wall female upright post; the outer side of the curtain wall external corner stand column is further connected with a sunshade device. According to the curtain wall system, a standard unit plate can be formed by adopting a V-shaped fold line structure on the basis of a limited building area, multiple functions such as lighting, sun shading, power generation and ventilation are ingeniously integrated in one set of standard unit template, the functions are powerful, the integration degree is high, overall installation and construction are facilitated, and the construction efficiency is improved. The construction difficulty of the multifunctional curtain wall system is reduced, and the product provided by the invention can meet the near-zero energy consumption and the ultrahigh thermotechnical requirements of zero-energy-consumption buildings.

The invention discloses a miniaturized wide-view-field waterproof anti-vibration underwater camera, and belongs to the technical field of underwater camera sealing design. The underwater camera comprises a camera lens protection structure, a shell, a wide-field camera and a rear cover; the protective glass in the camera lens protection structure has better vibration resistance by being filled with the natural rubber, and the inner and outer watertightness of the protective glass is realized through the matching of the pressing ring and the rubber pad; the wide-view-field camera is fixed inside the shell, the camera lens protection structure and the rear cover are respectively mounted at the front end and the rear end of the shell, and the camera lens protection structure and the rear cover are watertight with the shell inside and outside in a manner that O-shaped rings are mounted on matched excircle surfaces and rubber pads are mounted on end surfaces. According to the waterproof and anti-vibration camera lens protection structure with the sealing ring, the protection glass cannot be easily shattered in the using process, and meanwhile the good waterproof and anti-vibration performance is achieved.

The utility model discloses a construction site protective shed, which relates to the technical field of building construction, and comprises a main body frame and a transparent protective plate arranged on the main body frame, the main body frame comprises a plurality of vertical beams which are vertically arranged and cross beams which are arranged at the tops and the bottoms of the vertical beams and are used for connecting the vertical beams; the protective glass is installed on the top, the face facing a construction site and the two sides of the main body frame, universal wheels used for moving the main body frame are arranged at the bottoms of the vertical beams, a plurality of fixing assemblies used for being fixed to the ground are arranged on the main body frame, and each fixing assembly comprises an inserting rod arranged on the corresponding vertical beam and used for being inserted into the ground to fix the main body frame. The inserting rod is arranged on the vertical beam in an up-down moving manner; by moving the protection device and moving the protection device to the observation position, the movement is more convenient, and by downwards moving the insertion rod on the main body frame, inserting the insertion rod into the ground and fixing the protection device on the ground, the movement of the protection device caused by vibration generated in the hammering process of a heavy hammer can be avoided.

The utility model relates to a green energy-saving building curtain wall, which belongs to the technical field of building curtain walls and comprises a mounting block, a fixing groove is formed in the front surface of the mounting block, a first fixing door is rotatably connected to the front surface of the mounting block through hinges, a connecting mechanism is arranged on the upper surface of the mounting block, and a supporting frame is fixed to the left side of the mounting block through bolts. A curtain wall body is arranged on the left side of the supporting frame, and a ventilation mechanism is arranged in the supporting frame. According to the green energy-saving building curtain wall, no less than two photovoltaic panels can be used for generating electricity, the electricity generated by the photovoltaic panels is stored in a battery pack through a power distribution frame, no less than two photovoltaic panels are installed on the upper surface of an arc-shaped plate, illumination power generation at different angles can be conducted, and the energy-saving effect is achieved. The transparent protective glass cover is arranged on the outer sides of the at least two photovoltaic panels, so that the protective performance of the outer sides of the at least two photovoltaic panels can be improved, and the situation of impact damage is reduced.

The invention discloses a laser cutting device for stainless steel kitchen ware processing, which comprises a [-shaped seat and a laser cutting head composed of a body, a focal length adjusting ring and a protective glass, an electric sliding block is in sliding fit with the inner wall of the top of the [-shaped seat, and an auxiliary mechanism for improving the laser cutting effect is arranged at the bottom of the electric sliding block; the auxiliary mechanism comprises a wedge-shaped block slidably connected to the bottom wall of the electric sliding block, a rectangular block is fixed to the bottom wall of the wedge-shaped block through a plurality of supporting rods, the side wall of the rectangular block is slidably sleeved with a sliding frame, the inner wall of the sliding frame is elastically connected with the bottom wall of the rectangular block through a first spring, and a mounting hole is formed in the bottom wall of the sliding frame. And the inner wall of the mounting hole is rotationally connected with a pressing wheel and a first conical wheel through a rotating shaft. By arranging the auxiliary mechanism, the focal length of a light beam of the laser cutting head can be adjusted, it is guaranteed that the focal length of the laser cutting head is located at the proper position all the time, and then the machining quality of stainless steel kitchen ware laser cutting is improved.

The invention provides an endoscope objective lens, and relates to the technical field of medical instruments. Comprising a first spherical lens with negative focal power, a second spherical lens with positive focal power, a third spherical lens with negative focal power, a fourth spherical lens with positive focal power, a fifth spherical lens with positive focal power, an optical filter and protective glass which are sequentially arranged from an object side to an image side. The incident face, facing the object side, of the first spherical lens comprises a plurality of different film coating areas, the film coating areas are provided with different filter films, and the field angles of the multiple film coating areas are different. By setting the form, focal power and related parameters of each spherical lens, the endoscope objective lens has the advantages of large field angle, miniaturization and large depth of field, and by partition coating, changes of a transmittance curve and a reflectivity curve caused by changes of an incident field angle are reduced, light of a laser band is cut off, and the anti-laser effect of a coating film is ensured; under the laser-free working condition, color cast during large-field-angle imaging is avoided, and the image quality is improved.

The intelligent actual measurement robot comprises a chassis, a damping frame, a measuring mechanism and a pattern spraying mechanism, the measuring mechanism comprises a three-dimensional laser scanner, one side of the three-dimensional laser scanner is fixedly connected with a protective glass shell, one side of the protective glass shell is fixedly connected with a third motor, and the third motor is fixedly connected with a fourth motor. The output end of the third motor is fixedly connected with a brush rod, the pattern spraying mechanism comprises a coating box, second air cylinders are symmetrically arranged on one side of the coating box, the output end of each second air cylinder is fixedly connected with a third air cylinder, and the measuring mechanism is used for comprehensively scanning a house and has the advantages of being not affected by the environment, high in measuring speed and accurate in measuring. The third motor can rotate to drive the brush rod to rotate at the outer end of the protective glass shell, so that dust adhered to the surface of the outer end of the brush rod is cleaned away, the scanning definition is improved, and the device can automatically move and measure, is good in maneuverability, is accurate in measurement, is not affected by the environment, and is high in measurement speed.

The invention discloses electric vehicle perovskite solar awning glass capable of automatically adjusting transparency based on illumination intensity, and belongs to the technical field of semiconductor devices. The outer layer protective glass is used for providing physical protection and has good light transmission performance; the perovskite thin film power generation layer is used for absorbing light energy and converting the light energy into electric energy; the first transparent conductive layer is used as an electrode, so that current passes through the first transparent conductive layer without blocking light rays; and the electrolyte layer is used for ion transmission. The electrochromic material layer is used for changing the transparency according to the voltage and adjusting the light transmittance; the second transparent conductive layer is in contact with one side of the electrochromic material layer to form a complete circuit; the middle insulation and packaging layer is used for providing electrical isolation; and the basic protection inner layer is used for internal protection. And a solution is provided for solving the problems existing in the solar awning glass of the existing electric automobile.

The invention discloses protective glass, an isolating agent, application of the isolating agent and display equipment, the protective glass comprises a glass body and an isolating membrane layer arranged on at least one surface of the glass body, the isolating membrane layer can inhibit alkali precipitation reaction of soda-lime glass, especially alkali precipitation reaction on the back surface of the glass, and the isolating membrane layer can inhibit alkali precipitation reaction of the soda-lime glass, especially alkali precipitation reaction on the back surface of the glass. And the surface energy difference of the back surface of the glass can be eliminated, so that the whole surface energy becomes more uniform. The protective glass is good in optical transparency, clear in imaging, high in glossiness, low in Ra roughness and high in Rsm roughness, the problem of poor watermarks of a whole machine can be solved, and the protective glass can be adopted for improvement as long as soda-lime glass is used in other industries.

The invention relates to the field of glass manufacturing, and particularly discloses fiber-toughened transparent microcrystalline glass and a preparation method thereof. The transparent glass ceramic has excellent scratch resistance, and the maximum scratch width of the transparent glass ceramic under the pressure of 1.0 Kg is below 13.07 microns; the maximum scratch width under the pressure of 1.8 Kg is less than 22.25 mu m; under the pressure of 2.3 Kg, the maximum scratch width is 35.58 microns or below; the maximum scratch width under the pressure of 2.8 Kg is less than 51.17 mu m; meanwhile, the transparent microcrystalline glass obtained in the invention also has high light transmittance (the light transmittance of the transparent microcrystalline glass at 550nm visible light is 92% or more), low expansion coefficient, high hardness, good impact resistance and very strong chemical corrosion resistance, and can be applied to various display protective glass.

The invention relates to the technical field of optical imaging, and particularly provides an underwater ultra-wide-angle imaging optical lens and equipment, the underwater ultra-wide-angle imaging optical lens and equipment are suitable for a liquid medium with the refractive index of 1.3-1.4 and are especially designed for an underwater high-pressure environment, the lens sequentially comprises protective glass, a front lens group with positive focal power and a rear lens group with positive focal power in the light incidence direction, wherein the front lens group is composed of six lenses including a single lens and a glued lens, the rear lens group is composed of four lenses including a single lens and a glued lens, aberration correction is achieved by optimizing focal power distribution and glued structures of all the lenses, and the underwater field angle reaches 140 degrees or above within the waveband range of 450-700 nm. The system solves the problems of limited view field, low contrast ratio and the like caused by total reflection in underwater imaging, has the characteristics of miniaturization, wide view field and high resolution, and is suitable for scenes requiring deep underwater monitoring and monitoring. In addition, the optical system is a full-spherical-surface optical system and does not comprise an aspheric surface, and the economic benefits are effectively improved.

The invention belongs to the technical field of welding equipment, and discloses a handheld laser welding gun which is characterized in that a protective glass is arranged at the front end of a gun body, and the gun body is provided with an air inlet channel penetrating through the gun body; the fluid director is arranged on one side of the protective glass and is closer to the end part of the gun body than the protective glass; the fluid director comprises a body part, the body part is provided with at least one connecting part, the diameter of the connecting part is larger than that of the body part, the connecting part is connected with a cover plate, and the cover plate is provided with a vent hole; a ventilation gap is formed between the body part and the cover plate in the axial direction of the body part; in the radial direction of the body part, an annular gas uniformizing channel is formed between the body part and the gun body; the air inlet channel is communicated with the air uniformizing channel, the air uniformizing channel is communicated with the ventilation gap, and the ventilation gap guides airflow to blow towards the protective glass or blow out of the gun body in the direction away from the protective glass or form a closed air wall. According to the welding gun, the using temperature of the welding gun can be effectively reduced, meanwhile, external smoke dust and impurities are prevented from flying into the welding gun, and it is effectively ensured that the lens of the protective glass is clean and tidy.

The utility model discloses a lens protection structure and processing equipment, the lens protection structure comprises: a fixing member, the fixing member is provided with an accommodating cavity, a first light path through hole, a second light path through hole, an air inlet through hole and an air outlet through hole, the air inlet through hole and the air outlet through hole are arranged at two sides of a light path channel along a second direction, and the second direction is vertical to the first direction; the first air curtain assembly is arranged on the fixing piece, the first air curtain assembly and the light path channel are arranged in a spaced mode, the first air curtain assembly is located on the side where the air inlet through hole is formed, and the first air curtain assembly blows air from the air inlet through hole to the exhaust through hole; the second air curtain assembly and the containing cavity are arranged in a spaced mode, the second air curtain assembly is arranged on the side, provided with the second light path through hole, of the fixing piece, and the second air curtain assembly and the light path channel are arranged in a spaced mode. According to the embodiment of the utility model, a double-layer air curtain can be formed, welding slag is blown away, and the welding slag is prevented from burning the protective glass.

The utility model discloses an intelligent watch quick release type dial plate assembly comprising an intelligent watch main body, watchband installation positions are arranged on two sides of the intelligent watch main body, and a connection mainboard is arranged above the intelligent watch main body; the dial plate assembly is provided with protective glass, a display panel is installed below the protective glass, and the position of the display panel corresponds to the position of the connection mainboard; and the quick-release connecting structure is arranged between the smart watch main body and the dial plate assembly, and the mounting of the smart watch main body and the dial plate assembly is realized through the quick-release connecting structure. According to the utility model, the quick-release connecting structure is adopted, so that the smart watch main body and the dial plate assembly can be quickly disassembled and assembled, and the convenience of replacement and maintenance is improved; the stable connection between the dial plate assembly and the intelligent watch main body is realized through the positioning structure and the magnetic attraction fixing structure, and the wearing safety and stability are ensured.

The present invention relates to a manufacturing plant (1) for manufacturing a workpiece (26) by exposing powder material, and / or a workpiece element. The manufacturing plant (1) comprises at least one light source (4) for irradiating the powder material (18) and / or workpiece element provided in a process chamber (12); a light path, generated by the light source (4), which runs through a protective glass (10) into the process chamber (12) of the manufacturing plant (1), wherein the protective glass (10) is provided to protect against damage and / or dirt. At least one exposure device L1 – L9 is provided for exposing an object plane (30) belonging to the protective glass (10) of the manufacturing plant (1). The exposure device L1 – L9 surrounds the protective glass (10) at least partially, preferably completely, and comprises a plurality of identical light-emitting diodes, LEDs, for homogeneous illumination.

The invention discloses a vehicle-mounted landscape lens, and belongs to the technical field of vehicle-mounted lenses, the vehicle-mounted landscape lens comprises an optical assembly and a lens barrel, and the optical assembly comprises a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from left to right along a light incident light path; the first lens is a meniscus negative lens, the second lens is a negative lens, the third lens has positive focal power, the fourth lens is a positive lens, the fifth lens is a biconvex positive lens, the sixth lens is a biconcave negative lens, the seventh lens is a biconvex positive lens, the eighth lens is a color filter, the ninth lens is protective glass, and the outer side of the image surface of the protective glass is a lens imaging surface. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are all fixedly installed in the lens barrel. The vehicle-mounted landscape lens structure has the effect of improving the stability of the vehicle-mounted landscape lens structure while ensuring the reliable performance of the vehicle-mounted landscape lens.

The invention relates to an LED-based replacement radiation means (100, 200) for replacing conventional radiation means, such as UV fluorescent lamps and medium-pressure lamps, comprising a plurality of LEDs (102, 202) arranged on a circuit board (101, 201), at least one power supply unit (103, 203) arranged on the circuit board (101, 201) for supplying the plurality of LEDs (102, 202) with a supply voltage with sufficient power that is suitable for the LEDs (102, 202). According to the invention, the circuit board (101, 201) a) has exposed LEDs (102, 202), b) is connected via an electrical cable (104, 204) to a plug (105, 205) which can be plugged with its electrical contacts into a lamp socket (122) for a conventional lamp, and c) has fastening means with which the circuit board (101, 201) can be fastened in a clamp socket (111) of a protective glass holder or on a device for receiving a UV fluorescent lamp.

The application discloses a large-view-field object-side telecentric projection imaging method and a lens for a vehicle lamp. Incident light rays are converged through two large-aperture meniscus lens; the converged light rays are reduced in size and aberration through a double cemented lens group composed of a first negative double-concave lens and a first positive double-convex lens; the light rays are further converged through a second negative meniscus lens, so that the light rays all enter a diaphragm; chromatic aberration is corrected through three cemented lenses, and aberration is further reduced, and a spherical aberration can be corrected since the aperture diaphragm is located on the object side of the three cemented lenses; the light path is further converged through two double-convex lens groups, and distortion is reduced, the light rays enter a TIR total reflection prism, pass through a protective glass, and are clearly imaged on a DMD image plane. The imaging method provided by the application can realize object-side telecentric projection imaging under a large view field through the cooperation of conditional expressions and positive and negative focal lengths between the lenses, and the imaging is high in definition.

The invention discloses a medium-wave infrared illumination optical system design method, equipment and a storage medium, belongs to the technical field of infrared target simulation, and solves the technical problem that the diffraction efficiency and contrast are reduced when the prior art is applied to a medium-wave infrared illumination optical system. A DMD diffraction model is constructed, optical system analysis is carried out, the optimal pixel size and the optimal incidence pitch angle of the medium-wave infrared illumination optical system are obtained, and the medium-wave infrared illumination optical system comprises an illumination lens group, a shaping diaphragm, a trapezoidal prism, protection glass and a DMD target surface which are sequentially arranged along the light source emergent end. The light source converges light beams through the illumination lens group to form illumination light beams, the illumination light beams are shaped through the shaping diaphragm, and then the shaped illumination light beams are reflected to the target surface of the DMD through the trapezoidal prism. The medium-wave infrared illumination optical system is high in diffraction efficiency, small in stray light interference and capable of improving the contrast ratio of a projected image.