Publications by authors named "Norikazu Ohta"
Article Synopsis
- Laser scanners using mechanically driven mirrors are becoming important for applications like displays and laser radar, with non-resonant designs preferred for point-to-point operation.
- Traditional non-resonant scanners struggle to achieve high performance in mirror area, drive angle, and frequency due to limitations in amplifying drive angles.
- The paper presents a new two-axis scanner using a piezoelectric actuator made from single-crystal materials, featuring a 7mm mirror that can achieve a 20.8° deflection and a 559 Hz frequency, while maintaining a nonlinearity error of less than 1°.
In recent years, laser scanners have attracted significant attention for applications such as laser radars. However, the establishment of a two-degree-of-freedom scanner that can quasi-statically drive a large mirror with a large deflection angle has proven to be challenging. In this paper, we propose a laser scanner design and fabrication method by combining two unimorph piezoelectric actuators composed of piezoelectric single-crystal Pb(InNb)O-Pb(MgNb)O-PbTiO and a miniature translation-rotation conversion mechanism with flexible polyimide hinges.
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- * The hinges are made flexible by removing titanium layers and can fold like origami, allowing for complex 3D shapes.
- * Our method is easy to use and has been tested with piezoelectric actuators, showing that the structures work as intended.