Abstract

An image-space telecentric lens for an intra-oral 3D scanner was designed and fabricated for dental application. Since a telecentric function can provide the same results regardless of image plane position, it helps to realize a more accurate image for an intra-oral scanner. The performance of the designed lens meets the required properties for HD resolution. In particular, lateral color is corrected within 1 pixel. This system achieves depth of focus of more than 3 mm. For user convenience, the developed system consists of a prism part and an imaging part. Both parts are optimized to reduce the front size and weight of the system. In order to make the parallax sights, parallax angle was determined to be 8 degrees between two optical systems.

© 2015 Optical Society of Korea

Single-lens 3D digital image correlation system based on a bilateral telecentric lens and a bi-prism: validation and application

Lifu Wu, Jianguo Zhu, and Huimin Xie
Appl. Opt. 54(26) 7842-7850 (2015)

Multiaperture telecentric lens for 3D reconstruction

Jun-Sik Kim and Takeo Kanade
Opt. Lett. 36(7) 1050-1052 (2011)

Development of a near-infrared single-photon 3D imaging LiDAR based on 64×64 InGaAs/InP array detector and Risley-prism scanner

Changsheng Tan, Wei Kong, Genghua Huang, Shaolei Jia, Qiang Liu, Qingyun Han, Jia Hou, Ruikai Xue, Shiao Yu, and Rong Shu
Opt. Express 32(5) 7426-7447 (2024)

3D imaging scanner

Zhouyi Wu, Chao Han, Changhuei Yang, and Jiangtao Huangfu
Appl. Opt. 57(19) 5399-5404 (2018)

Volume estimation of tonsil phantoms using an oral camera with 3D imaging

Anshuman J. Das, Tulio A. Valdez, Jose Arbouin Vargas, Punyapat Saksupapchon, Pushyami Rachapudi, Zhifei Ge, Julio C. Estrada, and Ramesh Raskar
Biomed. Opt. Express 7(4) 1445-1457 (2016)