33results about How to "Realize arrayization" patented technology

The invention provides a low coherence multiplex optical fiber interferometer based on a non-balanced Mach-Zehnder optical autocorrelator. The optical fiber interferometer is formed by successively connecting a wide-spectrum light source (1), the non-balanced Mach-Zehnder optical autocorrelator (2), an optical distance autocorrelation detection unit (3), a transmission optical fiber (4) and an optical fiber sensor array (5) from end to end, wherein the non-balanced Mach-Zehnder optical autocorrelator (2) is composed of a first optical fiber coupler (21), a three-port optical circulator (23), an optical fiber collimator (24), a moveable optical reflector (25) and a second optical fiber coupler (26); and the optical distance autocorrelation detection unit (3) is composed of a three-port optical circulator (31) or (33), a photodetector (32) or (34). The optical fiber interferometer can be applied to the fields such as real-time monitoring and measurement of multipoint strain or temperature and other physical quantities, monitoring of large-sized intelligent structures and the like.

The invention provides a distributed Michelson optical fibre white light interference sensing device, comprising a broadband light source, a light source isolation device, an enquirer device, an optical fibre circulator, a lead-in / lead-out optical fibre, an optical fibre sensor array and a photoelectric detector. The light rays emitted from the light source enter the enquirer device and are then divided into two beams of which one is used as reference light and the other is used as sensing light; both the reference light and sensing light enter the optical fibre circulator, enter the optical fibre sensor array through the lead-in / lead-out optical fibre along the same transmission path, return the same way after being reflected by the sensor array and enter the photoelectric detector through the optical fibre circulator. By introducing the optical fibre circulator, the invention improves the multiplexing ability of the sensing system, improves the light source utilization efficiency and has good stability as sensing signals and reference signals share the same optical path in the sensor array.

The invention discloses a three-dimensional force touch sensing unit based on the combination of a capacitor and pressure-sensitive rubber. The three-dimensional force touch sensing unit is formed by sequentially stacking a surface PDMS protrusion, a third PI electrode substrate, a PDMS supporting layer, a capacitance plate layer, a second PI electrode substrate and a first PI electrode substrate. Four corners inside the PDMS supporting layer are each provided with an assembly composed of a square floating electrode and a piece of square pressure-sensitive rubber; in each assembly, the lower surface of the square floating electrode in the assembly is attached to the upper surface of the square pressure-sensitive rubber. The upper surfaces of the square floating electrodes are attached to the lower surface of the third PI electrode substrate. The distance between the square pressure-sensitive rubber and the capacitance plate layer is half the thickness of the PDMS supporting layer. The high sensitivity of capacitive touch sensing and the large range of pressure-sensitive touch sensing are combined, so that detection of tiny touch force and large touch force is realized. The three-dimensional force touch sensing unit can be applied to the fields, requiring high-sensitivity and large-range measurement, of robot arms, artificial limbs, operation mechanical arms and the like.

The present invention relates to the technical field of micro-optical elements, in particular to a method and device for adjusting the focal length of a micro-lens array, which includes a micro-lens array, the micro-lens array is provided with micro-lenses, and is characterized in that: a micro-mirror array is also provided, and a micro-lens array is provided. The mirror array is provided with micromirrors, and each micromirror of the micromirror array moves back and forth along the optical axis, so as to change the position of the focused light spot and realize the adjustment and change of the focal length of the corresponding microlens. The device for applying the method includes a microlens array and a micromirror array, both of which have the same cell pitch. The incident parallel light will first pass through the microlens array, then be reflected by the microlens array, pass through the microlens array in the opposite direction, and finally converge into a spot array, and its cell pitch is also equal to the cell pitch of the microlens array. The invention solves the problem that the microlens array cannot be adjusted, and has simple method and convenient operation.