US 12,222,550 B2
Light scattering patch device and preparation method thereof
Yang Zhu, Hangzhou (CN); Lei Zhang, Hangzhou (CN); Yao Tang, Hangzhou (CN); Kaicheng Deng, Hangzhou (CN); and Liyin Shen, Hangzhou (CN)
Assigned to ZHEJIANG UNIVERSITY, Wujiang (CN)
Appl. No. 18/713,209
Filed by ZHEJIANG UNIVERSITY, Hangzhou (CN)
PCT Filed Aug. 2, 2022, PCT No. PCT/CN2022/109643
§ 371(c)(1), (2) Date May 24, 2024,
PCT Pub. No. WO2023/103420, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 202111497836.3 (CN), filed on Dec. 9, 2021.
Prior Publication US 2024/0418936 A1, Dec. 19, 2024
Int. Cl. G02B 6/26 (2006.01); G02B 6/25 (2006.01); G02B 6/42 (2006.01); F21V 8/00 (2006.01); G02B 6/122 (2006.01); G02B 6/30 (2006.01)
CPC G02B 6/262 (2013.01) [G02B 6/25 (2013.01); G02B 6/4203 (2013.01); G02B 6/0008 (2013.01); G02B 6/1228 (2013.01); G02B 6/305 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A light scattering patch device, comprising a patch, an air gap, and a tapered optical fiber;
wherein the patch is a transparent patch;
wherein a refractive index of the patch is greater than a refractive index of a biological tissue;
wherein a tip, a tapered transition zone and a partial unstretched zone of the tapered optical fiber are embedded in the patch, and the air gap is formed between the tip and the tapered transition zone of the tapered optical fiber and the patch;
wherein a relationship between a cross-sectional radius F(z) of the tapered optical fiber and a distance z from a cross-section to the tip of the tapered optical fiber satisfies a function 1; assuming that a length of the tapered transition zone is d, and the function 1 is:
F(z)=62.3−56.36×exp(−((135.8×(z/d)+16.18)/65.81) 2)+0.6324×exp(−((135.8×(z/d)+0.5469)/0.1508) 2)+1.103×exp(−((135.8×(z/d)+24.78)/−0.02043) 2)−12.1×exp(−((135.8×(z/d)−13.07)/−22.32) 2); and
wherein the cross-sectional radius F(z), the distance z from the cross-section to the tip of the tapered optical fiber, and the length d of the tapered transition zone are all in the unit of μm.