The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A Z-shape fiber structure fabricated by CO2 laser is proposed here for the simultaneous measurement of axial strain and temperature. The Z-shape structure is fabricated by simply exposing a single mode fiber (SMF) to the focused CO2 laser that causes the unbalanced residual stress relaxation between the upper surface and lower surface of the fiber. The laser irradiation also gives rise to efficient...
In this paper, we propose a two-dimensional resonant MEMS scanning mirror with an integrated ultra-compact multiplied angle amplification for miniature LIDAR application. A wedge-like structure is designed to magnify scanning angle of a 2D MEMS scanner which can also reduce driving voltage, decrease maximum stress and increase reliability and life. Compared with other angle amplification, the wedge...
This paper proposes a method of small wire detection based on diffraction. The light beam is generated by a laser head with its focus on the central of a photosensitive element, and an electronic detection and switching module is developed to detect whether a wire or the like supplied to an operation machine is present. In response to a small wire or the like sitting in the laser beam, a diffraction...
This paper presents a wire detection method using single-slit diffraction. A laser head generates the light beam, and an optical slit is introduced in the path of light source to a wire, so that diffraction pattern generated by the slit will be projected to the receiving screen, and irradiance loss could be observed, due to the presence of a wire. Simulation result demonstrates that the design can...
This paper describes an industrial robot joint offset calibration method called the virtual line-based single-point constraint approach. Previous methods such as using CMM, laser trackers or cameras are limited by the cost or the resolution. The proposed method relies mainly upon a laser pointer attached on the end-effector and single position-sensitive detector (PSD) arbitrarily located on the workcell...
According to the mission of space detection and measurement, a space target detection system based on a two-dimensional scanning micro-mirror and a laser rangefinder is presented. The micro-mirror is fabricated by MEMS technology and actuated by piezoelectricity. It has two DOF and changes the direction of the emitted laser beam for a regional 2D scanning. The scanning angles are detected by piezoresistors...
A novel micro-optical-electro mechanical systems (MOEMS) sensor technique is developed for optical scanning and space detection. As the core technology of the system, a two-dimensional scanning mirror with small volume, large deflection angles and high frequency is presented. A reflected optical beam on the mirror can be scanned more than 20 deg two-dimensionally. For the deflection angles decoupling...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.