11 October 2017 Design of an omnidirectional single-point photodetector for large-scale spatial coordinate measurement
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In high precision and large-scale coordinate measurement, one commonly used approach to determine the coordinate of a target point is utilizing the spatial trigonometric relationships between multiple laser transmitter stations and the target point. A light receiving device at the target point is the key element in large-scale coordinate measurement systems. To ensure high-resolution and highly sensitive spatial coordinate measurement, a high-performance and miniaturized omnidirectional single-point photodetector (OSPD) is greatly desired. We report one design of OSPD using an aspheric lens, which achieves an enhanced reception angle of −5  deg to 45 deg in vertical and 360 deg in horizontal. As the heart of our OSPD, the aspheric lens is designed in a geometric model and optimized by LightTools Software, which enables the reflection of a wide-angle incident light beam into the single-point photodiode. The performance of home-made OSPD is characterized with working distances from 1 to 13 m and further analyzed utilizing developed a geometric model. The experimental and analytic results verify that our device is highly suitable for large-scale coordinate metrology. The developed device also holds great potential in various applications such as omnidirectional vision sensor, indoor global positioning system, and optical wireless communication systems.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hongbo Xie, Hongbo Xie, Chensheng Mao, Chensheng Mao, Yongjie Ren, Yongjie Ren, Jigui Zhu, Jigui Zhu, Chao Wang, Chao Wang, Lei Yang, Lei Yang, "Design of an omnidirectional single-point photodetector for large-scale spatial coordinate measurement," Optical Engineering 56(10), 104105 (11 October 2017). https://doi.org/10.1117/1.OE.56.10.104105 . Submission: Received: 27 June 2017; Accepted: 19 September 2017
Received: 27 June 2017; Accepted: 19 September 2017; Published: 11 October 2017

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