8results about How to "Guaranteed collimation" patented technology

The embodiment of the invention discloses a traveling wave tube high-frequency assembly and an assembling method thereof, the traveling wave tube high-frequency assembly comprises a traveling wave tube high-frequency assembly, the high-frequency assembly comprises a composite tube shell and an all-metal slow wave structure arranged in the composite tube shell, the composite tube shell comprises an electron gun welding disc, a pole shoe, a spacer ring and a collector welding disc, and the electron gun welding disc, the pole shoe and the spacer ring are brazed together. The all-metal slow-wave structure is composed of a plurality of radial sub-cavities, and the radial sub-cavities are fixed in the composite tube shell through high-temperature diffusion welding. The high-frequency assembly does not need to use a thin-wall tube shell, is simple to assemble, can reduce the inner diameter of a magnetic system, increases bunching current, and further increases the output power under the condition that the voltage is not changed. The composite tube shell and the all-metal slow wave structure are matched through a circle, and the machining precision error can be 0.08 mm. The multiple radial sub-cavities can be fixed in the composite tube shell only through high-temperature diffusion welding, the technological process is simple, the assembly efficiency and precision are high, and the problem that the matching degree becomes poor due to the fact that welding flux flows into the slow-wave structure is solved.

The invention discloses equipment for improving or removing a traditional painting and calligraphy ink seal, which comprises a laser equipment main body, one side of the laser equipment main body is provided with a corrugated pipe, one end of the corrugated pipe is provided with a laser head, one end of the laser head is provided with an emission head, the laser equipment main body comprises a box body, the top of the box body is fixedly connected with a handle, and the top of the box body is fixedly connected with the handle. A control panel is fixedly installed on one side of the box body, and a controller electrically connected with the control panel is fixedly installed on the inner wall of the box body. The device has the advantage of high efficiency, and solves the problems that in the using process of existing equipment for improving or removing painting and calligraphy ink seals, continuous and efficient operation is not convenient, frequent interruption and resetting possibly cause inconsistent treatment effects each time, the final repairing quality is affected, and the repairing efficiency is affected. And operators need to spend more time and energy to adjust the equipment and process each work, so that the labor cost is increased.

This invention discloses a cryostat cold mass assembly, including a cryostat base plate, a cold mass support unit, and a support assembly. The cold mass support unit is slidably fixed to the top of the cryostat base plate via the support assembly. At room temperature, the cold mass support unit is pre-offset relative to the cryostat base plate, and the pre-offset amount is the amount of material contraction at low temperatures. In this invention, by pre-offsetting the cold mass support unit at room temperature, the entire cryostat returns to the centerline position when it contracts at low temperatures, thereby ensuring that the centerline does not shift at low temperatures and guaranteeing alignment at low temperatures.

The present invention discloses a device and system for on-site calibration of geometric parameters of a starlight simulator, the device comprising an optical element, a translation mechanism, an image acquisition device and a data processing device; the optical element is mounted on the translation mechanism, and the image acquisition device is mounted on one end of the translation mechanism; the optical element is used to deflect the emergent light of the starlight simulator to be calibrated, the translation mechanism is used to drive the optical element and the image acquisition device to translate, during the translation process the image acquisition device is used to collect a starlight image formed after the emergent light is deflected by the optical element and send it to the data processing device, the data processing device is used to calculate the parallelism of the starlight simulator to be calibrated according to the starlight image; the device does not need to use a collimator, avoids human eye alignment and reading errors, and improves the accuracy and reliability of parallelism calibration of the starlight simulator.

The utility model discloses an infrared collimating lens, which comprises a lens cone, an internal component arranged in the lens cone, and a first locking piece and a second locking piece which are respectively arranged at two ends of the internal component and fix the internal component in the lens cone, the internal assembly sequentially comprises a first lens, a first spacer, a second lens, a third lens, a second spacer and a fourth lens from the object side to the image side along the optical axis. According to the utility model, one of the four lenses is a plastic lens, so that the cost, the total length and the weight can be reduced as much as possible while the collimation effect is ensured. Specifically, the aspheric plastic lens is adopted to realize correction of various aberrations of light, light emitted by a laser radar is collimated into parallel light, an infrared light collimation effect is better realized, and through reasonable distribution of focal power and surface types of each lens, the collimation capability of the lens is effectively improved, and the infrared collimation lens with high reliability and low cost is obtained.

The present application relates to a parent-child optical lens, which comprises a lens frame, a first carrier and a second carrier and a first lens and a second lens installed in the lens frame, the first carrier is located in the second carrier and can move relative to the second carrier. The first side of the second carrier has a sliding fitting structure and a fitted first track; the second driving device for driving the second carrier comprises a piezoelectric element, a vibration starting part and a driven part, the driven part is linear and serves as the second track; the vibration starting part mechanically vibrates under the driving of the piezoelectric element attached to its surface and moves along the optical axis relative to the second track, and the moving range is at least 6 mm. The vibration starting part is arranged in the interior of the lens frame and is fixed to the lens frame or the second carrier through a mounting part; the moving stroke of the vibration starting part is limited to the middle section area of the lens frame. The present application also provides a corresponding camera module.

The present invention provides a mounting frame for a coaxial optical system and a coaxial optical system having the same. The mounting frame comprises: a base body, mounted on an optical platform of the coaxial optical system, the base body having a positioning hole for mounting a positioning rod; a clamping assembly, arranged in the positioning hole, for positioning and fixing the positioning rod; and a mounting plate, arranged in the base body, the mounting plate having a mounting hole for mounting an optical element. The clamping assembly positions, clamps and fixes the positioning rod to ensure that the positional relationship between the positioning rod and the mounting frame is unique. In addition, multiple mounting frames can be connected and positioned by positioning rods to ensure collimation and improve the coaxial accuracy of the mounting frame, so as to improve the installation accuracy of the coaxial optical system, thereby improving the calibration accuracy of the optical path and improving the stability of the optical path, and facilitating the calibration operation of the coaxial optical system.

The utility model relates to the technical field of optical fiber manufacturing, in particular to a preform rod clamping device which comprises a lifting part mounted on a platform, an arc plate fixed at the moving end of the lifting part, a through hole formed in the arc plate, a metal positioning ball arranged on the arc plate and tangent to the through hole, an insertion hole formed in the metal positioning ball and used for inserting a preform rod, and a clamping part arranged on the lifting part and used for clamping the preform rod. And a locking piece arranged on the outer side of the metal positioning ball is used for fixing. According to the preform rod clamping device, the bolt with the rubber head is arranged as a locking piece, so that clamping marks on the surface of a preform rod are avoided, the product quality is protected, the arc plate is lifted by utilizing the linear module, and a structure that a metal positioning ball is tangent to a through hole is matched, so that natural vertical falling is realized, and collimation and vertical motion tests of the preform rod are ensured; the refractive index performance of the preform is analyzed, vertical and accurate positioning of the preform is facilitated, test result deviation is reduced, and therefore the structure is relatively simple, operation is convenient, and production detection requirements are met.