11 October 2017 Design of an omnidirectional single-point photodetector for large-scale spatial coordinate measurement
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Optical Engineering, 56(10), 104105 (2017). doi:10.1117/1.OE.56.10.104105
Abstract
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, Chensheng Mao, Yongjie Ren, Jigui Zhu, Chao Wang, Lei Yang, "Design of an omnidirectional single-point photodetector for large-scale spatial coordinate measurement," Optical Engineering 56(10), 104105 (11 October 2017). http://dx.doi.org/10.1117/1.OE.56.10.104105 Submission: Received 27 June 2017; Accepted 19 September 2017
Submission: Received 27 June 2017; Accepted 19 September 2017
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KEYWORDS
Photodiodes

Aspheric lenses

Photodetectors

Sensors

Optical instrument design

Metrology

Solids

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