38results about How to "Vibration insensitive" patented technology

The invention aims to provide a synchronous phase-shifting Fizeau interference device capable of performing real-time high-accuracy measurement on the surface appearance of an object. A synchronous phase-shifting technology is combined with a Fizeau interference method, and the technical problems that the traditional interferometer has low stability and low measurement accuracy and cannot measure objects in real time and the like are solved. The synchronous phase-shifting Fizeau interference device capable of measuring in real time comprises an illumination unit, an interference unit and a synchronous phase-shifting unit. Due to the adoption of a coaxial interference light path, a space-bandwidth product of a charge coupled device (CCD) is fully utilized; and compared with an off-axis light path, the coaxial interference light path has a higher spatial resolution; a flat glass plate in the traditional Fizeau interferometer is replaced by a 1 / 4 wave plate, so that object light and reference light have orthogonal polarization directions, and the compactness of the structure of the device is kept under the synchronous phase-shifting; and moreover, four phase-shifting interference patterns can be obtained through single exposure, and the real-time property of measurement is realized on the premise of guaranteeing a high spatial resolution.

A sensor unit for measuring a measurement variable in a medium, in particular in an aggressive liquid or gaseous medium, comprises a sensor that is arranged in a sensor capsule and has a sensor region that is arranged on a base body. In order to detect the measurement variable in the sensor region, a measurement opening is provided in the sensor capsule. On a side facing the measurement opening, the sensor region has a measurement surface that is provided with measurement electronics. An electrical supply line is provided on the sensor for the purpose of transmitting a sensor signal that is generated by the measurement electronics. A plated-through hole is provided in the base body. The plated-through hole is used to connect the measurement electronics to the electrical supply line via signals through the base body, on a base side of the sensor that faces away from the measurement opening.

The invention discloses a method for manufacturing a near infrared waveband three-dimensional photonic crystal, wherein an one-dimensional crystal mask is formed by utilization of holographic interference, and is transferred onto a SiO2 layer on a silicon substrate material through ion beam etching or reactive ion beam etching; high refractive index materials are filled into an etched groove; the surface is polished by the ion beam etching method, and then SiO2 is deposited; a second layer is formed after coating of photoresist, holographic photoetching, ion beam etching and so on; the steps are repeated, and layers are aligned by the Moire fringe technique; and finally the SiO2 is removed by the acid washing method, and the three-dimensional photonic crystal required is obtained. The method fully utilizes the submicron resolution of holographic photoetching, can manufacture the large-area three-dimensional photonic crystal which can then be cut into small blocks as required, has the advantages of high efficiency and low cost, and simultaneously is convenient to overcome the defects of introduction of large area and periodicity by changing wave fronts of two beams of coherent light in an interference field.

Apparatus and method for measuring displacements of a rotary or linearly-displaceable member by counting periods of displacement thereof along a predetermined displacement path, including a pulse generator located at a pulse-generation station proximate to the displacement path; and an electrical circuit controlled by the pulse generator to actuate a first sensor to sense the status of the displaceable member at the particular instant one of said second machine-sensible elements passes through the pulse-generation station, and to increment a counter in accordance with said status determination. In the described preferred embodiments, the second machine-sensible elements are magnetic elements; and the pulse generator includes a coil, a magnetic core magnetically coupled to the coil, and a spring-mounting for the magnetic core causing the core to move from an initial position in one direction with respect to the coil when aligned with one of the second machine-sensible elements, and to be returned in the opposite direction by the spring to its initial position, whereby the coil generates pulses during such movements of the magnetic core.

An electrical switch system (10) for use with a motor vehicle transmission has a movable contact assembly (16) mounted on an insulative base member (14) in turn mounted on a detent lever (22). The detent lever (22) is mounted on a manual shaft (20) for pivotal movement therewith while a housing is rotatably mounted on the manual shaft facing the detent lever. A plurality of side-by-side arcuate contact strips are insert molded in the housing wall with contact segments (1–6) exposed on a wall facing the movable contact assembly. The housing is maintained in one fixed angular position while movable contacts sweep across the contact segments upon pivotal motion of the manual shaft. A control gap is provided by ledges (12k) formed in the housing with a lip (14b) of the insulative base member (14) mounting the movable contact assembly received in the control gap to ensure that appropriate contact engagement between the movable contact assembly and control segments is maintained. In a modified embodiment an additional lip (14b′) and corresponding housing ledge (12k′) is provided at an opposite side of the insulative base member.

A safety system for an industrial press having a moveable section (30), the safety means including: a laser emitting means (1) for emitting a continuous planar laser beam (9) having a generally constant lateral width; a light receiving means (22) for receiving the laser beam and for detecting when an object intersects the laser beam; and a control means for stopping or preventing movement of the moveable section of the press when the receiving means detects that the laser beam has intersected an object.

The present invention relates to an integrated drive mechanism of tiny piezoelectric motor- lens piece including a ring-shaped piezoelectric stator, a rotor and a drive power supply. Wherein: an inner screw is positioned in the ring shape piezoelectric stator, and the rotor including external screw is ring shaped or cylinder shaped and is integrated as a whole with the lens piece; the external screw of the rotor is inosculated with the inner screw of the stator; the rotor is spun into the stator through the inosculated crew thread. The advantages are: a super-thin ring-shaped piezoelectric stator is provided, and the lens piece is driven directly as a part of the rotor; an opposite higher driving force and efficiency are provided; the screw thread transmission is not sensitive to the vibration; the motor can work at a lower voltage because the piezoelectric element on the piezoelectric stator is flaky or has a structure of multiple thin pieces; the device is especially adapted to the automatic focusing of the optical lens in the module of mobile telephones and minitype cameras because the motor and lens drive mechanism have less components, a small size and a low cost.

The transport carriage (1) for the accommodation of a needle board (2) comprises a console (21) that is preferably supported so as to be pivotable about a rotational axis (22). Clamping jaws (24, 25) are provided on the console (21), with the clamping jaws clamping the needle board (2)—preferably in a force-limited manner—between each other and thus holding said needle board in a frictionally engaged manner.

The invention discloses a digital Mohr phase shifting interference surface shape measurement method based on a region location fitting algorithm. The method comprises the following steps: establishinga virtual interferometer, acquiring an ideal system residual wavefront on an image surface of the virtual interferometer, and pre-marking a solving error region; acquiring a single-breadth actual interferogram in an actual interferometer; solving a surface shape error by using a digital Mohr phase shifting interference method to obtain the surface shape error with the solving error region; selecting data in a solving correctness region for fitting of the surface shape error to obtain a fitting coefficient; and reconstructing the surface shape error by the fitting coefficient to finally obtaina surface shape error result without the solving error region. The digital Mohr phase shifting interference surface shape measurement method solves the problem of a solving error occurring at a largeresidual aberration wavefront caused by the adoption of the digital Mohr phase shifting interference method; the measurement dynamic range of the digital Mohr phase shifting method is extended to beequivalent to that of a traditional phase shifting method; and meanwhile, the real-time, anti-shock and high-precision advantages of the original digital Mohr phase shifting interference method are maintained.

An electropneumatic proportional flow control device improves electropneumatic control of pneumatically operated valves. Improved turn down ratios in regards to the electromagnetic response of the device to a supplied control voltage is achieved using two variable spring devices, one linear, as part of the pressure regulator valve component, and the other non-linear, as part of the proportional valve component and which are magnetically responsive to different magnetic forces. The use of both the linear and non-linear springs together results in an increased turndown-ratio, especially during initial valve control.

The present invention relates to an integrated drive mechanism of tiny piezoelectric motor- lens piece including a ring-shaped piezoelectric stator, a rotor and a drive power supply. Wherein: an innerscrew is positioned in the ring shape piezoelectric stator, and the rotor including external screw is ring shaped or cylinder shaped and is integrated as a whole with the lens piece; the external screw of the rotor is inosculated with the inner screw of the stator; the rotor is spun into the stator through the inosculated crew thread. The advantages are: a super-thin ring-shaped piezoelectric stator is provided, and the lens piece is driven directly as a part of the rotor; an opposite higher driving force and efficiency are provided; the screw thread transmission is not sensitive to the vibration; the motor can work at a lower voltage because the piezoelectric element on the piezoelectric stator is flaky or has a structure of multiple thin pieces; the device is especially adapted to the automatic focusing of the optical lens in the module of mobile telephones and minitype cameras because the motor and lens drive mechanism have less components, a small size and a low cost.

A sensor unit for measuring a measurement variable in a medium, in particular in an aggressive liquid or gaseous medium, comprises a sensor that is arranged in a sensor capsule and has a sensor region that is arranged on a base body. In order to detect the measurement variable in the sensor region, a measurement opening is provided in the sensor capsule. On a side facing the measurement opening, the sensor region has a measurement surface that is provided with measurement electronics. An electrical supply line is provided on the sensor for the purpose of transmitting a sensor signal that is generated by the measurement electronics. A plated-through hole is provided in the base body. The plated-through hole is used to connect the measurement electronics to the electrical supply line via signals through the base body, on a base side of the sensor that faces away from the measurement opening.

An electrical hand-held power tool includes a non-contacting electrical manual control switch (3) having an operating element (4) and a sensor switch (5), a pivotable carrier (6) which carries a switching element (13) and which is manually controlled by the operating element (4) of the manually control switch (3), the sensor switch (5) being connected with the carrier (6) vibration-free, and pivot transmitting device (7) axially displaceable along the vibration axis A) of a vibrating assembly (2) of the power tool relative to the operating element (4) for pivoting the carrier (6) in response to actuation of the operating element (4).

Apparatus and method for measuring displacements of a rotary or linearly-displaceable member by counting periods of displacement thereof along a predetermined displacement path, including a pulse generator located at a pulse-generation station proximate to the displacement path; and an electrical circuit controlled by the pulse generator to actuate a first sensor to sense the status of the displaceable member at the particular instant one of said second machine-sensible elements passes through the pulse-generation station, and to increment a counter in accordance with said status determination. In the described preferred embodiments, the second machine-sensible elements are magnetic elements; and the pulse generator includes a coil, a magnetic core magnetically coupled to the coil, and a spring-mounting for the magnetic core causing the core to move from an initial position in one direction with respect to the coil when aligned with one of the second machine-sensible elements, and to be returned in the opposite direction by the spring to its initial position, whereby the coil generates pulses during such movements of the magnetic core.

An electropneumatic proportional flow control device improves flow control because it incorporates two internal valves in parallel: a first electronically controlled, miniature proportional valve manipulated in parallel with a second and larger pilot -operated valve. The miniature valve allows for precision control of the low-end of the full scale output; the larger mechanical valve allows for the high-end of the full scale output. These valves are encompassed within a valve assembly comprising a valve manifold, a pilot-operated diaphragm, electronic control circuitry, and a flow restrictor.

The embodiments herein relate to a method for deriving topography of an object surface (3). A linearly polarized light wave (102a, 103a) is directed towards the object surface (3) and a reference surface (2). Images of reflected linearly polarized light wave (102b, 103b) for a plurality of wavelengths are obtained. The images are obtained for at least four polarizations for each of the plurality of wavelengths. The reflected linearly polarized light wave (102b, 103b) is a reflection of the linearly polarized light wave (102a, 103a) directed towards the object surface (3) and the reference surface (2). The topography of the object surface (3) based on the obtained images is obtained.

A system for structural analysis of an object, including a device for generating an input light beam arranged so as to cause the input beam generated to interact with at least one portion of the object, and a device for receiving the output light beam resulting from the interaction between the input beam and the object. In this system, the receiving device include a wavefront analyzer arranged so as to measure the electromagnetic field of the wave of the output beam received, and the generating device has a spatial coherence adapted to that of the receiving device. A structural analysis method implementing such a system is presented.

A throttle flap adjustment unit having a throttle flap fastened to a throttle flap shaft. The throttle flap shaft is rotatably journaled in a throttle flap end pipe. A servomotor is provided for adjusting the throttle flap shaft and is connected to the throttle flap shaft by a drive. A sensor unit is provided for determining a position of the throttle flap shaft. A cover is provided to be fastened onto the throttle flap end pipe, wherein the servomotor is positioned in the cover and controllable over an electrical coupling element, wherein the servomotor (6) has a front portion (12) oriented toward the throttle flap end pipe and formed as an end plate (13) for the drive shaft of the servomotor. The end plate (13) also serves to center the servomotor (6) with respect to the throttle flap end pipe (4) and also to center the servomotor (6) in the cover (7).

The invention relates to a module, which can be inserted into a housing of an industrial plug-in connector (5), wherein at least one optical fibre plug-in connector (2) can be inserted in the module (1), wherein at least one adapter (3) can be inserted in the module (1) and is connected to the optical fibre plug-in connector (2), wherein the adapter (3) contains an optical imaging element (11). In the plugged-in state, the optical elements (11, 11), for example the aforementioned spherical lenses, of two modules (1) are aligned towards each other such that the light signal that emerges from the optical element (11) of the module of the first industrial plug-in connector (5) couples into the optical element (11) of the module (1) of the second industrial plug-in connector (5).

A microphone includes a separate end cover with a sound port. A diaphragm is directly attached to the end cover. The backplate is positioned within the housing against a ridge near an end of the housing. A spacer is positioned against the backplate. The diaphragm engages the spacer when the end cover, with its attached diaphragm, is installed in the housing. The backplate of the microphone has an integral connecting wire that is made of the same material as the backplate. The integral connecting wire may have an inherent spring force to provide a pressure contact with the accompanying electrical components. The integral connecting wire electrically couples the backplate to the electronic components within the housing and transmits the raw audio signal corresponding to movement of the diaphragm. The housing may have first and second ridges on which the printed circuit board and the electret assembly are mounted, respectively.

The invention provides a punching processing quality control method of a large-scale covering component, and relates to a manufacture method of parts of car. The punching processing quality control method comprises the steps as follows: S1, establishing a CAD (Computer Aided Design) model; S2, compensating or modifying the CDA model based on relevant technologies; S3, analyzing the forming property; S4, setting and manufacturing a die; S5, detecting the material of a part; S6, detecting a covering component online; S7, detecting the covering component offline; S8, converting into a three-dimensional model; and S9, comparing and modifying. With the adoption of the punching processing quality provided by the invention, the quality of a punching component can be simply and conveniently controlled, thus, the consistency of the detecting speed and the detecting precision can be achieved; moreover, the processing quality and the production efficiency of the covering component are improved; and the demand on detecting of large-scale complex covering component under mass production can be met.

The invention relates to a phase shift interference microscopic device and method based on Zernike phase contrast imaging. The device comprises an illuminating unit, a microscopic amplifying unit and a phase contrast imaging unit which are arranged in sequence along the incident direction of light; the illuminating unit comprises a beam expanding system, a multi-beam illumination generating unit and a beam contraction collimating unit which are arranged in sequence along the light path direction; the beam expanding system comprises a laser, a light intensity controller and a beam expanding unit which are arranged in sequence along the light path direction; the multi-beam illumination generating unit comprises an axicon lens, a first lens, a rotary scatterer, a second lens and an amplitudemask plate which are arranged in sequence along a light path; a tested sample is arranged on a focal surface between a first objective lens and a second objective lens; and the tested sample and a CCD (Charge Coupled Device) camera meet an objective image relation. Due to the adoption of the device and the method, the vignetting effect of the conventional Zernike phase contrast imaging is avoided, quantitative measurement of a phase object is realized, and the light path has the advantages of low coherent noise, high vibration resistance, high transverse resolution and the like.

The invention aims to provide a synchronous phase-shifting Fizeau interference device capable of performing real-time high-accuracy measurement on the surface appearance of an object. A synchronous phase-shifting technology is combined with a Fizeau interference method, and the technical problems that the traditional interferometer has low stability and low measurement accuracy and cannot measure objects in real time and the like are solved. The synchronous phase-shifting Fizeau interference device capable of measuring in real time comprises an illumination unit, an interference unit and a synchronous phase-shifting unit. Due to the adoption of a coaxial interference light path, a space-bandwidth product of a charge coupled device (CCD) is fully utilized; and compared with an off-axis light path, the coaxial interference light path has a higher spatial resolution; a flat glass plate in the traditional Fizeau interferometer is replaced by a 1 / 4 wave plate, so that object light and reference light have orthogonal polarization directions, and the compactness of the structure of the device is kept under the synchronous phase-shifting; and moreover, four phase-shifting interference patterns can be obtained through single exposure, and the real-time property of measurement is realized on the premise of guaranteeing a high spatial resolution.

An industrial stamping machine safety system with a movable part (30), the safety system includes: a laser emitting device (1) for emitting a continuous plane laser beam (9) with a substantially constant lateral width; a light receiving device (22) , for receiving the laser beam and detecting when an object is inserted into the laser beam; and a control device for stopping or blocking the movable part of the stamping machine when the receiving device detects that an object is inserted into the laser beam. exercise.

The invention belongs to the technical field of laser interferometers, and provides a laser dynamic interferometer. The laser dynamic interferometer comprises a laser, a collimation structure for collimating a laser beam emitted by the laser, a plane mirror, a plane mirror, a 1 / 4 wave plate, a 1 / 4 wave plate, a polarization beam splitter and the like. A crossed micro-polarizer array capable of changing directions freely is adopted and used for generating phase shift at the same time, a mode of combining a liquid crystal phase delayer and a traditional interferometer is adopted, different interference phases can be obtained in cooperation with different polarizer arrays, and therefore, switching measurement is achieved on the basis of original laser interferometer measurement. A polarized light interference principle is adopted, and time domain phase shift of a traditional phase shift interferometer is converted into space domain phase shift, so that full-resolution measurement can be achieved in one CCD frame frequency. According to the invention, the advantages of rapid measurement, insensitivity to vibration, reduction of the influence of airflow and the like which are not possessed by a traditional interferometer are achieved.

The invention belongs to the technical field of laser interferometers, and provides a laser dynamic interferometer, including: a laser, a collimation structure for collimating a laser beam emitted by the laser, a plane reflector and a plane reflector, 1 / 4 wave plate and 1 / 4 wave plate, polarizing beam splitter and other structures. It uses a crossed micro-polarizer array that can change direction freely to generate a phase shift at the same time, and uses a combination of a liquid crystal phase retarder and a traditional interferometer, and different interference phases can be obtained with different polarizer arrays , so as to realize switching measurement on the basis of the original laser interferometer measurement. At the same time, the invention adopts the principle of polarized light interference to convert the time-domain phase shift of the traditional phase-shift interferometer into the space-domain phase shift, so that full-resolution measurement can be realized within one CCD frame frequency. The invention realizes the advantages of rapid measurement that traditional interferometers do not have, insensitivity to vibration, and reduction of the influence of airflow.

The invention relates to laser ultrasonic nondestructive testing equipment adopting a light deflection method, which is characterized in that a beam splitter is arranged at the emergent ends of a laser and is provided with two emergent ends; a galvanometer is arranged at one emergent end of the beam splitting device; an energy attenuation device is arranged at the other emergent end of the beam splitting device; a first positive lens is arranged at the emergent end of the energy attenuation device; a second positive lens and the first positive lens are arranged on the same side; a third positive lens is arranged at the emergent end of the second positive lens; a shading device is arranged between the second positive lens and the third positive lens and is used for partially shading a light beam emitted from the second positive lens to the third positive lens; a photodiode is arranged at the emergent end of the third positive lens; and a signal processing end is electrically connected with the laser, the galvanometer and the photodiode respectively. The equipment has the advantages that ultrasonic signals are detected through the optical non-interference technology, equipment is easier to debug, laser ultrasonic signal excitation and ultrasonic signal receiving can be completed only through one laser, cost is extremely low, and laser excitation and laser receiving are synchronous in real time.

The invention relates to a module that can be inserted into the housing of an industrial plug-in connector (5), at least one fiber optic connector (2) can be inserted into the module (1) and at least one adapter (3) can Inserted into the module (1), the adapter is connected to the fiber optic connector (2), wherein the adapter (3) contains the optical imaging element (11). In the plugged-in state, the optical elements (11, 11') of the two modules (1), such as the above-mentioned ball lenses, are aligned with each other in such a way that the The optical signal of the optical element (11) is coupled to the optical element (11') of the module (1') of the second industrial plug-in connector (5').