Abstract
This paper proposes a capsule endoscopy (CE) with stereoscopic imaging that is based on a single lens design. There is a prism array installed in front of the single lens to merge two separate fields of views (FOVs) into the field of the lens. Such a merging field involves two view information. A scheme applies a pair of orthogonal polarizations coated on the outside faces of individual prisms for multiplexing these two different views. The rays from the two fields go through the single lens to form the separate images by applying polarization filter with interleaving arrangement (that is, space division process) of the states in front of the image sensor. Another way is to apply a liquid crystal array (LCA) with active polarization function in time division process to receive the separate images. We employ the optical software, Zemax, to simulate and analyze the proposed CE. The simulation results show that the proposed CE can successfully receive the two field images in the image plane by using only a single lens.
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References
Chen CY, Yang TT, Sun WS (2008) Optics system design applying a micro-prism array of a single lens stereo image pair. Opt Express 16(20):15495–15505
Cobrin GM, Pittman RH, Lewis BS (2006) Increased diagnostic yield of small bowel tumors with capsule endoscopy. Cancer 107(1):22–27
Deng QL, Chen CY, Cheng SW, Sun WS, Lin BS (2012) Micro-prism type single-lens 3D aircraft telescope system. Optics Commun 285(24):5001–5007
Hsia Chih-Hsien, Chiang Jen-Shiun, Li Hsin-Ting, Lin Chien-Sheng, Chou Kuang-Yi (2016) A 3D endoscopic imaging system with content-adaptive filtering and hierarchical similarity analysis. IEEE Sens J 16:4521–4530
Iddan G, Meron G, Glukhovsky A, Swain P (2000) Wireless capsule endoscopy. Nature 405:417
Lee DH, Kweon IS (2000) A novel stereo camera system by a biprism. IEEE Trans Robot Autom 16(5):528–541
Mang OY, Jeng WD (2011) Design and analysis of radial imagingcapsule endoscope (RICE) system. Opt Express 19(5):4369–4383
Mang OY, Huang SW, Chen YL, Lee HH, Weng PK (2007) Design of wide-angle lenses for wireless capsule endoscopes. Opt Eng 46(10):103002-1–103002-11
Meron GD (2000) The development of the swallowable video capsule (M2A). Gastrointest Endosc 52(6):817–819
Salahieh B, Chen Z, Rodriguez JJ (2014) Rongguang liang “multi-polarization fringe projection imaging for high dynamic range objects”. Opt Express 22(8):10064–10071
Sheu MJ, Chiang CW, Sun WS, Wang JJ, Pan JW (2015) Dual view capsule endoscopic lens design. Opt Express 23(7):8565–8575
Shih B-Y, Shyu S-W (2012) Three-piece optical pickup lens. US patent 8,339,715
Song Chul-Gyu, Kang Jin U (2011) Design of the computerized 3D endoscopic imaging system for delicate endoscopic surgery. J Med Syst 35(1):135–141
Tseng YC, Hsu HC, Tsai CM, Han P (2015) Color multiplexing method to capture front and side images with a capsule endoscope. Appl Optics 54(28):E241
Tseng Yung-Chieh, Han Pin, Hsu Hsun-Ching, Tsai Cheng-Mu, Fang Yi-Chin (2016) A flexible FOV capsule endoscope design based on compound lens. J Disp Technol 12(12):1798–1804
Acknowledgements
This study was supported by the Ministry of Science and Technology (MOST) of Taiwan under Contract No.: MOST 107-2221-E-005-050, MOST 108-2221-E-005-071 and by the National Chung Hsing University, Taiwan ROC.
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Tsai, CM., Tseng, YC. & Huang, TC. Stereoscopic imaging capsule endoscopy in a single lens design based on prisms and polarizers. Microsyst Technol 28, 213–220 (2022). https://doi.org/10.1007/s00542-019-04588-9
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DOI: https://doi.org/10.1007/s00542-019-04588-9