71results about How to "Improve coupling accuracy" patented technology

The invention discloses a quick phototyping by laser cladding layer height measuring device and a closed-loop control method thereof. The quick phototyping by laser cladding layer height measuring device comprises three laser 2D (two-dimensional) displacement sensors, a control unit, an upper computer and a display. According to the closed-loop control method, the three laser 2D displacement sensors are spaced at an included angle of 120 degrees and mounted around a cladding bit for measuring the height of the cladding layers on the side lines of a closed laser equilateral triangle around a molten metal bath; every laser 2D displacement sensor is provided with a sensor controller for converting CMOS (complementary metal-oxide-semiconductor) image signals into height data and transmitting the height data to a control unit via an Ethernet network; the control unit is used for processing the data collected by the three laser 2D displacement sensors, computing the height of cladding layer and feeding the height back to the upper computer; the display is used for in real time displaying the height date measured by the three laser 2D displacement sensors and the layer height data processed by the control unit. The quick phototyping by laser cladding layer height measuring device and the closed-loop control method thereof achieves real-time precise control of the single-layer lifting capacity of the cladding bit.

The invention discloses an automatic coupling device of a three-in-one coaxial type photoelectronic device. The automatic coupling device comprises a rack, an upper fixture, a lower fixture and an automatic rotating platform, wherein the automatic rotating platform is assembled on the rack and can rotate around a Z axis; the lower fixture is assembled on the automatic rotating platform through an alignment device, and can be driven to move along an X axis and a Y axis as well as swing around the X axis and the Y axis by the alignment device; a lifting device is arranged on the automatic rotating platform, and a rotating device is installed at a lifting end of the lifting device; the upper fixture is installed at a rotary driving end of the rotating device; and a polarization angle adjusting device used for driving the isolator to rotate is assembled on the rack. The automatic coupling device has the advantages of reasonable structural design, high degree of automation, high production efficiency, low production cost, stable product quality, wide application range and the like.

The invention provides a multichannel COB optical module automatic coupling packaging system and method, and the system comprises an installation plate, a first clamping mechanism, a second clamping mechanism, a dispensing mechanism, a curing mechanism, and a monitoring mechanism. The first clamping mechanism is used for clamping a lens and a tail fiber; the second clamping mechanism is used for clamping a circuit board, and a chip is arranged on the circuit board; the dispensing mechanism is used for dispensing on the chip; the curing mechanism is used for curing the glue between the lens andthe circuit board after coupling; and the monitoring mechanism is used for monitoring the relative position between the lens and the chip. The method provided by the invention comprises the followingsteps of: clamping of an appliance, primary coupling, dispensing, secondary coupling, colloid solidification, and packaging finishing. The packaging system is firm in structure and stable in clamping, so that the device is difficult to damage, and the method is short in packaging time, high in production efficiency and higher in coupling precision compared with a manual coupling packaging mode.

A hub wheel (21) and an outer joint member (3) are coupled to each other through intermediation of a recess-projection fitting structure (M). The recess-projection fitting structure (M) can be separated by being applied with a pulling-out force in an axial direction under a state in which a bolt member (30) is removed, and can be re-formed by re-screwing the bolt member (30) into a bolt hole (5d). The hub wheel (21) comprises a receiving portion (23a) for receiving the bolt member (30). The shaft portion (5) has a small diameter portion (5a) serving as a fit-in portion to be fitted along an inner periphery of the receiving portion (23a) under a state in which the recess-projection fitting structure (M) is formed. The small diameter portion (5a) is used as a part for confirming the accuracy and the state of the recess-projection fitting structure (M).

The invention discloses a dual-channel rotary optical fiber connector. The connector comprises a central channel and a paraxial channel; a central incident collimator and a central receiving collimator, which are positioned on a rotating shaft, form the central channel of the rotary connector through direct aligned coupling and realize rotary and continuous transmission of optical signals in the central channel; a convex lens and a concave lens which are coaxial with the rotary connector, a paraxial incident collimator, and a paraxial receiver on an axis form the paraxial channel of the rotary connector; the paraxial incident collimator emits parallel light which passes through the convex lens and the concave lens and then enters the paraxial receiver, and rotary and continuous transmission of paraxial optical signals is guaranteed through the axial symmetry of the lens; the distance between the convex lens and the concave lens is determined by the paraxial receiver; the paraxial receiver can be an optical fiber collimator or large-core-diameter optical fibers; and a small hole is formed in the center of the convex lens and is used for fixing the central receiving collimator. The dual-channel rotary optical fiber connector has the advantages of simple structure, low insertion loss, high coupling precision and stable and reliable performance.

The invention relates to the field of optical device package and manufacturing, in particular to a coupling and welding system and method for a polarization-maintaining fiber of butterfly-shaped laser. A panda polarization-maintaining fiber and lens coupling and welding system comprises a welding platform support, wherein a lead screw is arranged on the welding platform support and is connected with a coupling mechanism in a driving way, the coupling mechanism is connected to and arranged at a coupling platform sliding rail on the welding platform support in a sliding way, a butterfly-shaped device fixed table is arranged in the coupling mechanism, a rotation device is arranged on the butterfly-shaped device fixed table, a welding adjustment mechanism is arranged behind the coupling mechanism, and a laser gun is arranged in the welding adjustment mechanism and is arranged above the coupling mechanism. The system is convenient to operate, coupling, fiber rotation and welding are integrated, the coupling efficiency is high, and the cost is low; with the adoption of the coupling and welding method, accurate angle rotation of the polarization-maintaining fiber can be achieved; and by adisplay, accurate welding is achieved, the production efficiency is improved, and coupling and welding of the butterfly-shaped device is efficiently and stably completed.

The invention provides automatic coupling and packaging equipment for a multi-channel COB optical module. The equipment comprises a mounting plate, a first clamping mechanism, a second clamping mechanism, a dispensing mechanism, a curing mechanism and a monitoring mechanism, wherein the first clamping mechanism is used for clamping a lens and a tail fiber, the tail fiber is inserted into the lens,the second clamping mechanism is used for clamping a circuit board, a chip is arranged on the circuit board, the dispensing mechanism and the first clamping mechanism are oppositely arranged, the dispensing mechanism is used for dispensing on the chip, the curing mechanism is used for curing the glue between the lens and the circuit board after coupling, the monitoring mechanism is provided witha first monitoring device and a second monitoring device, and the monitoring mechanism is used for monitoring the relative position between the lens and the chip. The equipment is advantaged in that the structure is stable, clamping is firm, t coupling precision is high, the packaging time is short, problems of precision and device damage caused by manual coupling are avoided, production cost is effectively reduced, and production efficiency is improved.

The invention relates to the technical field of optical devices, and provides a lens coupling apparatus, structure and method based on a flat window type TO package. The lens coupling apparatus comprises a lens coupling tail fiber, a coupling sleeve and a magnet ring, the lens coupling tail fiber is formed by a metal outer sleeve and a ceramic ferrule, the ceramic ferrule is arranged at the internal part of the metal outer sleeve in a pressed manner, another port of the tail fiber on the ceramic ferrule is used for connecting test equipment, the coupling sleeve sleeves a step of the metal outer sleeve, the coupling sleeve and the metal outer sleeve are in clearance fit and fixed through laser beam welding, and the lower surface of the magnet ring is used for designing a magnetic force mutual coupling structure with the upper surface of peripheral metal of a lens element. According to the apparatus, structure and method, position adjustment of the lens element on the flat window type TO is driven through the magnetic adsorption type coupling mode between the magnet ring and the peripheral metal of the lens element, and after a preset lens coupling optical path aligning index requirement is met, the welding operation between coupling interfaces is completed.

The invention provides coupling welding equipment for a coaxial collimator. The coupling welding equipment comprises a laser welding gun assembly, an upper clamp assembly, an adjusting ring abutting assembly, a lens clamp assembly and a detection and analysis assembly, an optical fiber adapter is clamped and positioned by the upper clamp assembly, a lens is clamped and positioned by the lens clamp assembly, an adjusting ring is arranged on the optical fiber adapter in a sleeving manner, and the adjusting ring abuts against the optical fiber adapter through the adjusting ring abutting assembly; and the coupling welding device further comprises a reflecting mirror assembly which has multiple degrees of freedom of motion, a reflecting mirror is moved and positioned below the lens, and emergent light of the lens is reflected to the detection and analysis assembly. All devices of the collimator can be vertically and coaxially positioned, annular operation of the laser welding gun assembly is facilitated, a coaxial emergent light path is reflected to the detection and analysis assembly under the action of the reflecting mirror, the detection and analysis assembly can be horizontally arranged, it is ensured that an enough distance is reserved between a near-field position and a far-field position, and the equipment installation and arrangement convenience and the coupling accuracy are improved.

The invention discloses a die for forming an optical fiber coupling connector, which comprises a die cavity insert, a male die and a female die, wherein the die cavity insert comprises a tail part and a blind hole forming part; male die is used for accommodating and fixing the tail part of the die cavity insert; and the female die comprises a forming cavity having a lens forming part and a supporting hole which is formed on the side wall of the female die and corresponds to the forming part of the lens, a positioning block is matched in the supporting hole and is used for holding and positioning the blind hole forming part to align the center of the blind hole forming part and the center of the lens forming part. Compared with the prior art, the die adopts the positioning block to hold and position the die cavity insert, so the collimation of the blind hole is greatly increased. The invention also relates to a method for forming the optical fiber coupling connector.

A measurer for measuring the characteristics of wide-angle broad-spectrum polarizing split membrane is composed of light source, monochromator, polarizing prism, splitter, diaphragm, conic prism, energy meter, turntable A for holding the polarizing prism, turntable B for holding the conic prism and the specimen to be measured, and computer for controlling said turntables, and processing, displaying and printing data.

The invention discloses a multi-wavelength external cavity laser for a non-fluorescence raman spectrometer. More than two laser diodes with equal central wavelengths in an array are driven to be independently opened and closed through a power supply switching circuit; output light beams are calibrated into parallel collimated laser beams through a collimating laser calibration optical element; a special design is adopted by a grating; different grating periods are set for incident point regions, corresponding to the collimated laser beams, of the grating; the collimated laser beams form zero-order reflected beams and first-order diffracted beams after being diffracted by the grating; the zero-order reflected beams are output in the same direction and have a wavelength difference; the first-order diffracted beams return to the inside of the corresponding laser diodes along the original path to participate in internal mode competition of a resonant cavity; and the zero-order reflected beams are converged into an optical fiber combiner through an optical fiber coupling lens for wavelength output. The wavelength output is switched by the circuit, so that the unreliability and the possible error of conventional mechanical adjustment are eliminated; a tuning structure is relatively simple and stable; high stability of output wavelengths is ensured; the wavelength output repeatability in actual operation is high; and the tuning accuracy is relatively high.

The invention provides four-piece optical device coupling welding equipment based on power detection. The equipment comprises a lower clamp assembly for clamping a light emitting device, a lens clampassembly for clamping a lens, an upper clamp assembly for clamping a receiving device and an adjustment ring and a plurality of sets of welding devices for laser welding, wherein the lower clamp assembly comprises a lower clamp motion platform and a lower clamp disposed on the lower clamp motion platform, the lens clamp assembly comprises a lens clamp motion platform and a lens clamp disposed on the lens clamp motion platform, and the upper clamp assembly comprises an upper clamp motion platform, a receiving device clamp for clamping the receiving device disposed on the upper clamp motion platform and an adjustment ring jacking clamp for jacking the adjustment ring. According to the equipment, the packaging process combining a plurality of coupling and a plurality of welding on a set of equipment is realized, the problems of low packaging efficiency and large coupling error caused by the plurality of coupling among elements are solved, and significant improvement is achieved relative to the prior art.

The invention provides an optical fiber coupled connector. The connector comprises an optical fiber plug and a socket matched with the optical fiber plug, wherein the optical fiber plug is used for accommodating an optical fiber; an optical lens which is optically coupled with the optical fiber and a photoelectric signal converter are arranged at the socket end; and after an optical fiber signal enters the socket and is converged once through the optical lens, an optical signal is converted into an electric signal directly through the photoelectric signal converter for transmission. By the structure of combining the optical fiber plug and the socket with the structure, the coupling accuracy of the optical fiber coupled connector is greatly improved.

The invention discloses a gas-liquid two-fluid through-flow coupling adjusting device. The adjusting device comprises a valve body, an adjusting cap, a spring, a valve core, an air cavity cover and anair pressure plate, wherein an upper inner screw through hole which is in threaded connection with the adjusting cap is formed in the upper surface of the valve body, a lower inner screw through holewhich is in threaded connection with the air cavity cover is formed in the lower surface of the valve body, and an air inlet hole is formed in the middle of the air cavity cover; the valve body is internally provided with a liquid inlet cavity, a liquid outlet cavity, an upper through hole, a circular control hole, an air pressure adjusting cavity and a lower through hole; the valve core comprises an upper cylindrical section, a conical section and a lower cylindrical section, and the conical section is narrowed from top to bottom; and the upper end and the lower end of the spring abut against the upper surface of the adjusting cap and the upper surface of the upper cylindrical section respectively, the lower end surface of the lower cylindrical section is vertically connected with the upper surface of the air pressure plate, and the outer cylindrical surface of the air pressure plate is attached to the inner cylindrical surface of the air pressure adjusting cavity. The adjusting device is applied to a low-pressure low-flow system and has the advantages of being low in device cost, small in required installation space, timely in response and capable of making sure the continuous and stable gas-liquid flux flow matching effect.

The present invention offers a radio frequency module having a radio frequency power amplifier and a directional coupler integrated in a multi-layer board, and in particular, a small, inexpensive, and high-performance radio frequency module, and a small and inexpensive wireless device equipped with the radio frequency module. The radio frequency module includes: a multi-layer board; a radio frequency power amplifier formed on top of the multi-layer board; a directional coupler having two layers vertically arranged in the multi-layer board; an internal ground pattern provided between the radio frequency power amplifier and the directional coupler; and thermal vias used for the radio frequency power amplifier and provided (i) between the internal ground pattern and a rear surface ground pattern and (ii) between the directional coupler and a bias line which is (i) provided in the same layer as the directional coupler and (ii) used for the radio frequency power amplifier.

The invention relates to an energy conversion module used for a laser power supply system. An optical fiber interface is installed on the bottom surface of a base. A cavity is formed in the base above the optical fiber interface. A protection sheet is embedded in the base below the cavity and close to the optical fiber interface. A heat dissipation sheet is embedded in the cavity above the protection sheet. The surface, facing the protection sheet, of the heat dissipation sheet is provided with a laser energy conversion chip. Two levels of the laser energy conversion chip are connected with two pole plates extending out of the base from the cavity opening above the heat dissipation sheet. According to the invention, the heat dissipation effect is good, the chip is enabled to receive lasers with higher power density, a high-precision ceramic sleeve is embedded in the optical fiber interface, the coupling precision between the laser energy conversion chip and lasers is improved, the consistency of product output performance is improved, the novel module good in heat dissipation performance, high in output performance, good in reliability, low in cost, simple in assembling process and stable in work is realized, and the energy conversion module can work stably in laser power supply systems of different fields for a long time.

The invention discloses an optic fiber coupling connector which is used for coupling signals of two optic fibers. The optic fiber coupling connector comprises a first connector and a second connector, wherein the first connector is used for containing and fixing the end of one of the two optic fibers and the second connector is used for containing and fixing the other optic fiber. The optic fiber coupling connector also comprises a coupling lens which is arranged in the optic fiber coupling connector; the coupling lens comprises two back-to-back aligned curved surface parts which are used for coupling curved surface parts of the optic fibers; and the two curved surface parts have integrated structures. Through the optic fiber coupling connector, two coupling lens are integrated into one coupling lens; the two curved surface parts of the coupling lens have aligned integrated structures; and the alignment of the two curved surface parts are not influenced by the assembling error of the optic fiber coupling connector so that the optic fiber coupling connector has higher coupling precision.

The invention relates to a micro resonant cavity coupling device which is used for coupling and adjusting an on-chip micro resonant cavity and an optical fiber. A micro resonant cavity sheet fixing device, an optical fiber coupling adjustment device and a visual acquisition device are built on an optical platform to realize the coupling of the micro resonant cavity. The micro resonant cavity sheetfixing device can realize air suction fixation and multi-degree-of-freedom movement adjustment of the micro resonant cavity sheet through a precise one-dimensional guide rail, a rotary table and a micro resonant cavity coupling platform. According to the optical fiber coupling adjustment device, precise adjustment of the relative positions of optical fibers is achieved through a left six-axis adjustment table and a right six-axis adjustment table, coupling optical fibers at the left end and the right end are fixed through optical fiber clamps fixed to the adjustment tables, and then the micro-resonant-cavity coupling rate is increased. According to the visual acquisition device, by designing a CCD camera three-dimensional adjusting mechanism, camera fixing adjustment is achieved, and acquisition of visual information of the micro resonant cavity is achieved. According to the device, through microscopic amplification of the CCD camera and the six-axis adjusting tables in the left sideand the right side of the micro resonant cavity piece, coupling of the micro resonant cavity piece and the optical fiber is achieved, and the coupling precision and efficiency are improved.

The invention provides a lens coupling fixture based on voice coil motor driving. The fixture comprises a lens feeding assembly and a lens fixture assembly, the lens feeding assembly sequentially feeds lenses, and the lens fixture assembly clamps the fed lenses and moves the lenses to corresponding coupling positions for coupling; the lens fixture assembly comprises a multi-dimensional motion platform and a lens fixture arranged on the multi-dimensional motion platform, the lens fixture is mainly composed of a fixture base fixedly arranged on the multi-dimensional motion platform, two guide rails arranged on the fixture base in parallel, two connecting parts with the first ends arranged on the two guide rails in a sliding mode respectively, and lens chucks fixedly arranged at the second ends of the two connecting parts respectively, and the connecting parts are driven by two voice coil motors arranged on the fixture base respectively. The lens clamp is driven by the voice coil motors,has the characteristics of being simple in structure, small in size and fast in response, is suitable for miniaturized lens fixtures, and effectively improves the coupling precision and packaging quality of the lenses.

The invention provides a spatial light coupling method and system for a special photonic crystal optical fiber, and solves the problems that the existing special photonic crystal optical fiber is difficult to couple with spatial light, the coupling efficiency is low and the coupling precision is low. The spatial light coupling system comprises a laser light source, a light beam collimator, an optical focusing device, a target optical fiber, a three-dimensional adjusting device, an imaging device, a CCD detector and a data processing control device, wherein the light beam collimator, the optical focusing device, the target optical fiber, the imaging device and the CCD detector are sequentially arranged on the emergent light path of the laser light source, the three-dimensional adjusting device is arranged below the optical focusing device and is used for adjusting the position of the three-dimensional space of the optical focusing device, and the data processing control device receives the image acquired by the CCD detector, and compares and processes the acquired image. According to the invention, the position of the three-dimensional space of the optical focusing device is adjusted through the three-dimensional adjusting device, so that the spatial light is injected into the fiber core of the target optical fiber.

The invention discloses a novel double-path optical fiber rotary connector which comprises a central passage and a paraxial passage, wherein a central incident light collimation system arranged on a rotating shaft reflects onto a central passage receiving collimator perpendicular to the rotating shaft through a 45-degree reflector, and signal aligned coupling of the central passage is achieved. A paraxial incident light collimation system arranged on the rotating shaft emits parallel light, the parallel light passes through a convex lens and a concave lens which are coaxial with the rotary connector and then enters a paraxial receiver, and rotary continuous transmission of paraxial light signals is ensured by aid of the axial symmetry property of the lenses. The space between the convex lens and the concave lens is determined by the paraxial receiver which can be a collimator or a large-core-diameter optical fiber. The central incident light collimation system, the paraxial incident light collimation system and a rotor sleeve form a rotor part, the other parts form a stator part, and the 45-degree reflector and a stator are kept relative static through pair coupling of a magnet. The novel double-path optical fiber rotary connector has the advantages of being simple in structure, small in inserting loss, high in coupling accuracy and stable and reliable in performance.

The invention provides a lens clamping and coupling positioning device for multi-channel COB package. The lens clamping and coupling positioning device comprises a mounting plate, a lens clamp, a three-dimensional motion platform, a monitoring device and a supporting column; and the three-dimensional motion platform comprises an X-direction sliding table, a Y-direction sliding table and a Z-direction sliding table which are driven by an X-direction motor, a Y-direction motor and a Z-direction motor correspondingly so as to drive the lens clamp for coupling, a clamping groove is formed in the bottom of the front end of the lens clamp and used for clamping a lens, a tail fiber is inserted in the rear end of the lens, and the monitoring device can monitor the positions of the lens clamp and the lens in real time. The lens clamping and coupling positioning device is simple in structure, and convenient and quick to operate, and has the characteristics of high coupling precision and stable clamping, the problems of low coupling precision and infirm device clamping are effectively solved, the product quality is improved, and the production cost is lowered.

The invention discloses a PSM photoelectric transceiver with integrated multi-optical ports; the PSM photoelectric transceiver comprises a first carrier and a fiber carrier fixed on the first carrier; the fiber carrier is used for supporting fibers; the first carrier is provided with a photoelectric conversion unit having a plurality of single optical channels, wherein the optical channels have the same working wavelength, and the optical path of each optical channel is provided with a lens group; the fiber number is consistent with the optical channel number; the fiber carrier is provided with slots matched with the fibers one by one; the PSM photoelectric transceiver with integrated multi-optical ports is formed on the basis of a Box plane packaging structure, and solves the technical problems that a PSM photoelectric transceiver based on Box plane packaging has multi-path diffused naked fibers, and prevents the disadvantages that an existing coaxial TO-CAN based packaging photoelectric transceiver is large in size and high in cost; in addition, the fibers are fixed by slots on the fiber carrier, so less space is taken, thus reducing the whole size.

The invention provides a micro-lens automatic coupling packaging device which comprises a lens loading assembly, a lens clamp assembly, a device clamping assembly, a dispensing curing assembly and a visual detection assembly. The lens loading assembly comprises a material disc and a transfer table arranged on one side of the material disc, the material disc is used for loading a micro-lens, the transfer table is used for temporarily bearing a micro-lens to be coupled, the device clamping assembly is used for clamping and positioning an optical device, the lens clamp assembly is used for clamping and placing the micro-lens in the material disc on the transfer table, and then the micro-lens on the transfer table is clamped again and moved to a coupling position of the optical device to complete coupling. The relative position of the micro-lens and the clamping part of the lens clamp assembly is ensured to be accurate so that the micro-lens is accurately positioned by the lens clamp assembly, the position deviation generated by material taking of the lens clamp assembly is corrected, and the coupling precision of the micro-lens is improved.

The invention discloses a single multi-mode ceramic filter. By arranging a first single-mode resonator, a first multi-mode resonator, a second single-mode resonator, a third single-mode resonator, a second multi-mode resonator and a fourth single-mode resonator on a filter body of a single structure, every two resonators are connected by a coupling structure formed by tailoring, so that the plurality of resonators are integrally formed without splicing modes such as welding or pasting, the structural stability is improved, the size of the filter is greatly reduced, the coupling precision and yield are improved, and the process requirements are reduced. Besides, through combination of the single-mode resonators and the multi-mode resonators, the overall insertion loss of the filter is reduced, and the filter is enabled to have a relatively high Q value.

The present invention provides a lens clamping and coupling positioning device for multi-channel COB packaging, including: a mounting plate, a lens fixture, a three-dimensional motion platform, a monitoring device and a support column; the three-dimensional motion platform includes an X-direction slide table, Y-direction slide table and Z-direction slide table, the X-direction slide table, Y-direction slide table and Z-direction slide table are respectively driven by X-direction motor, Y-direction motor and Z-direction motor, and are used to drive the lens holder for coupling , the bottom of the front end of the lens fixture is provided with a clamping groove, the clamping groove is used to clamp the lens, the rear end of the lens is inserted with a pigtail, and the monitoring device can monitor the lens fixture and the lens in real time position; the invention has simple structure, convenient operation, high coupling precision and stable clamping characteristics, effectively solves the problems of low coupling precision and weak device clamping, improves product quality and reduces production cost.