13 results about "Image tube" patented technology

The invention relates to a micro-channel plate manufacturing method based on a mold pouring method and a micro-channel plate. The method comprises the steps that a silicon microchannel array substrate is placed on a metal mold material, and holes of the silicon microchannel array substrate face downwards; based on a crucible and a vacuum hot melting filling device, liquefying a metal mold material and filling the metal mold material into the silicon micro-channel array substrate; cooling to realize metal curing to obtain a metal mold precursor, and corroding silicon to obtain a metal mold; putting the high borosilicate glass material and the metal mold into a crucible, and filling the high borosilicate glass material into the metal mold based on a vacuum hot melting filling device; cooling to obtain a glass-metal complex, and corroding a metal material to obtain a micro-channel plate substrate; carrying out hydroxylation treatment; and preparing a dynode on the micro-channel plate substrate, and performing annealing treatment to obtain the micro-channel plate. The microchannel plate with a high softening point and high purity can be manufactured, the yield is high, noise is low, exhaust in the channel is sufficient, and the service life of the image tube is prolonged.

The invention discloses a double-indium-sealed image tube which comprises a tube shell, a photoelectric cathode assembled with a first end of the tube shell and a fluorescent screen assembly assembled with a second end opposite to the tube shell. A first indium sealing layer for fixing the first end and the photoelectric cathode together is arranged between the first end of the tube shell and the photoelectric cathode, and a second indium sealing layer for fixing the second end and the fluorescent screen assembly together is arranged between the second end of the tube shell and the fluorescent screen assembly. According to the double-indium-sealed image tube, pollution to the tube shell and the surface of the fluorescent screen is effectively reduced. In addition, the invention also discloses a manufacturing method of the double-indium-sealed image tube.

The application discloses a device and method for testing the light feedback characteristic of a low-light image intensifier image tube, which comprises a light source, a neutral filter box, an adjustable aperture diaphragm, an integrating sphere, an illuminometer, a contrast test target plate, a conjugate projection lens assembly, an image tube, an industrial camera, an image tube high-voltage power supply, a computer and a test dark box. The method tests the linearity of a certain fixed spatial frequency line under the corresponding MCP voltage of the image tube, and obtains the MCP voltage of the image tube at which the light feedback occurs according to the change of the contrast of the image tube with the MCP voltage. If the brightness gain corresponding to the voltage is higher than the required brightness gain, the image tube does not have the risk of light feedback, otherwise, the image tube has the risk of light feedback. Whether the image tube and the high-voltage power supply packaged as an image intensifier have the risk of light feedback is determined. The application realizes the accurate test of the light feedback characteristic of the low-light image tube, can avoid the circulation of the image tube with the risk of light feedback, and guarantees the imaging quality of the low-light image intensifier.

The utility model provides an image intensifier connecting assembly of a low-light level night vision device, and relates to the technical field of low-light level night vision devices, the image intensifier connecting assembly comprises an image tube seat, an image tube pressing ring and an image intensifier, one end of the image tube seat along the axis direction is connected with the low-light level night vision device through a first clamping structure, and the other end is provided with a mounting groove; the image intensifier is arranged in the mounting groove along the axis direction of the image tube seat; a containing cavity is formed in the side, close to the image intensifier, of the image tube pressing ring, the image tube pressing ring is arranged outside the image intensifier and the image tube base in a sleeving mode, and the open end of the containing cavity is used for being connected with a low-light-level night vision device. The side wall of the mounting groove is provided with two gaps, the gaps are internally connected with a mounting plate through a second clamping structure, the mounting plate is used for mounting a conductive elastic sheet, and the conductive elastic sheet is elastically attached to the contact. The contact seat group is combined on the image tube seat, and the image tube seat is clamped on the low-light night vision device, so that rapid mounting is facilitated; and the conductive elastic sheet is clamped on the image tube seat through the mounting plate, so that the conductive elastic sheet is convenient to disassemble and maintain when damaged.

The invention discloses a variable magnification eyepiece, comprising a rotating lens joint, which is connected to an eyepiece barrel via a thread, a rotating image tube arranged in the rotating lens joint, and the rotating image tube is fixed in the rotating lens joint via a first rotating image tube pressure ring and a second rotating image tube pressure ring; a variable magnification group lens fixed by a variable magnification group frame and a variable magnification group pressure ring, a compensation group lens fixed by a compensation group frame and a compensation group pressure ring, and a field lens fixed by a field lens frame and a field lens pressure ring are arranged in the rotating image tube; a variable magnification tube is sleeved on the outer side of the rotating image tube, the variable magnification tube is fixed to the rotating image tube via the variable magnification tube pressure ring, a track groove is arranged on the variable magnification tube, the variable magnification group frame and the compensation group frame are connected to the rotating image tube via a sliding screw, one end of the sliding screw is arranged in the track groove of the variable magnification tube; a variable magnification handwheel is arranged on the outer side of the rotating lens joint, and the variable magnification handwheel is connected to the rotating image tube via a variable magnification rotating screw.

The invention relates to the technical field of double proximity distance control, in particular to an image tube front proximity distance measuring device and a measuring method thereof. Comprising a Y-axis moving module, a Z-axis micrometer moving module, an optical device mounting plate, a spherical hinge, a ball guide rail module, an X-axis moving module, a Z-axis moving module, a black and white camera, a grating ruler module, an infrared light source, a bottom plate, an X-axis module connecting plate, a Y-axis moving module mounting plate and a bare tube tool. According to the principle that the light transmittance of gallium arsenide in the visible light and near-infrared band range reaches 90% or above and is far higher than that of similar materials, and the light transmission wavelength ranges from 850 nm to 1100 nm, light beams with the wavelength ranging from 850 nm to 1100 nm are emitted to an image tube, a gallium arsenide face and a micro-channel plate face are positioned through a black-and-white camera capable of receiving infrared light, and the light transmittance of gallium arsenide in the visible light and near-infrared band range reaches 90% or above. The front proximity distance can be visually measured through the distance difference between the two, and superposition or amplification of a plurality of error sources in indirect measurement is avoided.

The utility model discloses a movable base of image tube signal to noise ratio detection equipment, include: mounting groove and underframe, movable assembly, movable assembly includes first movable plate and second movable plate, and first movable plate rotatory installation is in the inside one side of mounting groove, connecting component, connecting component includes fixed shaft, locating hook, rotation hole and spring, and fixed shaft is fixed in the one side of the outer surface of second movable plate, and locating hook rotates and penetrates in the outer surface of fixed shaft, and rotation hole is set up in the lower end of the outer surface of locating hook, and rotation hole penetrates in the outer surface of fixed shaft, and spring is fixed in the one side of the outer surface upper end of locating hook, the utility model discloses through the cooperation of first universal wheel, second universal wheel, first movable plate, second movable plate, positioning assembly, first hinge, second hinge and spring, both solved the equipment movement problem, and also guaranteed the stability when fixing, and convenient operation simultaneously, the practicality and adaptability of detection equipment have been improved significantly.

The invention relates to the technical field of integrated circuits, and discloses a boost DC-DC current detection circuit, a driving control module of the boost DC-DC current detection circuit comprises a lower power tube, a current mirror tube and a first switch tube, a grid electrode of the lower power tube is electrically connected with a driving control signal, and a delay unit is electrically connected between a grid electrode of the first switch tube and the driving control signal; the source electrode of the lower power tube and the source electrode of the current mirror image tube are electrically connected and are both grounded, the drain electrode of the lower power tube is electrically connected with the source electrode of the first switch tube, the drain electrode of the first switch tube and the drain electrode of the current mirror image tube are electrically connected with the high-precision response module, and the high-precision response module is electrically connected with the current output module; the input end of a buffer in the current output module is electrically connected with the grid of the first switching tube, the output end of the buffer is electrically connected with the grid of the second switching tube, and the source of the second switching tube is an induced current output end. The low current can still be quickly and accurately sensed under the interference condition, and the stability of the loop can be ensured.

The invention relates to an optical fiber image inverter compatible with black and white display and a preparation method and application thereof. The preparation method comprises the following steps: drawing a light absorption wire and a monofilament: drawing light absorption material glass of the optical fiber image inverter compatible with black and white display into the light absorption wire; drawing a secondary multifilament; carrying out hot melt pressing molding; twisting and forming; and the optical fiber image inverter compatible with black and white display is prepared. The optical fiber image inverter compatible with black and white display has the advantages of high resolution, high contrast ratio, clear imaging, uniform transmittance, excellent internal quality and the like, and can effectively improve the observation definition and resolution of a low-light image tube when being applied to a low-light image intensifier; the product can meet the matching requirements of the low-light night vision industry, can replace a traditional optical fiber image inverter product, and improves the comprehensive use performance.

The invention provides an optical fusion parallax adjusting structure and optical equipment, the optical fusion parallax adjusting structure comprises a parallax adjusting ring, the parallax adjusting ring comprises an adjusting part and a connecting part, at least part of the connecting part is arranged in an inner cavity of an image tube shell, the adjusting part is arranged outside the inner cavity, and the adjusting part is fixedly connected to the connecting part; the image tube limiting ring is arranged on the front end face, facing the parallax adjusting ring, of the image tube, and the image tube limiting ring abuts against the connecting part; the elastic adjusting ring is arranged in the adjusting ring mounting groove of the image tube shell and elastically abuts against the rear end face of the parallax adjusting ring; the adjusting hand wheel is arranged on the front end shaft diameter of the image tube shell in a sleeving mode and abuts against the parallax adjusting ring, and the adjusting hand wheel is used for moving towards or away from the image tube barrel in the axial direction under the action of external force so as to adjust the axial position between the imaging face of the image tube and the prism. The image tube shell does not need to be disassembled, parallax adjustment can be achieved outside the image tube shell, and the parallax adjustment precision and adjustment efficiency are improved.

This invention provides a multi-channel imaging tube and its preparation method, belonging to the field of medical device technology. The imaging tube includes a tubular body with a cavity for accommodating imaging material. The tubular body has a first central channel and several peripheral channels, with the central channel's axis coinciding with the axis of the tubular body. The peripheral channels are located around the first central channel, and their axes are aligned along the length of the tubular body. Multiple first partitions are arranged in parallel within the tubular body, each partition along its length; a first connecting gap is provided between the edge of each partition and the inner wall of the tubular body. This imaging tube, by filling the tubular body with imaging material to form a continuous three-dimensional imaging network, allows the applicator to be completely surrounded by the high-signal imaging material, enabling accurate identification of the applicator's location during MR scanning and providing a reliable basis for precise execution of treatment plans.

The utility model belongs to the technical field of banknote identification, in particular relates to a multispectral analyzer, and aims to solve the problem that the conventional banknote identification equipment is insufficient in precision when coping with a complex anti-counterfeiting technology. According to the technical scheme, the device is composed of an identification base, a conveying assembly and a detection mechanism. The identification base comprises a stable structure built by a plurality of assemblies; the conveying assembly comprises a banknote outlet wheel, a magnetic head wheel and other wheel assemblies, and stable banknote conveying is achieved through transmission of a motor, a synchronous belt and a synchronous wheel. The detection mechanism is provided with a magnetic steel base, a short magnetic head assembly, a long magnetic head assembly, an upper image tube assembly, a lower image tube assembly and the like, and multispectral images and magnetic information can be collected in the paper money conveying process. The identification instrument has the beneficial effects that the identification accuracy and reliability are remarkably improved by comprehensively applying various detection means and by means of the high-precision magnetic sensor and the high-resolution image sensor, various counterfeit money can be effectively identified, and powerful guarantee is provided for financial transaction safety.

The utility model discloses a multifunctional medical 4K high definition endoscope, relates to medical instrument field, including base, imaging tube and display screen, the top of base is fixedly equipped with the disinfection box, the inside of disinfection box is movably equipped with the retractable subassembly, the imaging tube is movably sleeved outside the retractable subassembly, and the display screen is equipped with the display screen. A disinfection assembly located on the outer side of the imaging tube is fixedly installed in the disinfection box, a shade assembly is movably installed on the front side of the disinfection box, and the disinfection assembly comprises a connecting frame fixedly installed on the outer side of the disinfection box. The outer ultraviolet lamps and the inner ultraviolet lamps are controlled to be turned on, the imaging tube can be irradiated from the outer side through the outer ultraviolet lamps located on the inner sides of the lower supporting frame and the upper supporting frame, and meanwhile the inner ultraviolet lamps located in the cage frame can penetrate through the interior of the cage frame to irradiate the inner side of the imaging tube, so that sufficient irradiation on the imaging tube is guaranteed; the disinfection effect is ensured.