US 11,703,390 B2
Cigarette temperature detection device and method
Ze Liu, Kunming (CN); and Yuanzhen Zhou, Kunming (CN)
Assigned to CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD, Kunming (CN)
Appl. No. 17/802,537
Filed by CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD, Kunming (CN)
PCT Filed Dec. 22, 2021, PCT No. PCT/CN2021/140303
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2023/024358, PCT Pub. Date Mar. 2, 2023.
Claims priority of application No. 202110985819.8 (CN), filed on Aug. 26, 2021.
Prior Publication US 2023/0194352 A1, Jun. 22, 2023
Int. Cl. G01J 5/0806 (2022.01); G02B 27/09 (2006.01); G01J 5/00 (2022.01); G01J 5/08 (2022.01)
CPC G01J 5/0806 (2013.01) [G01J 5/0014 (2013.01); G01J 5/0879 (2022.01); G02B 27/0966 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A cigarette temperature detection device comprising multiple cylindrical convex lenses, wherein each of the cylindrical convex lenses has a thicker central wall between two thinner end walls formed by rotating along a parallel line at a predetermined distance around a long axis of an elliptical-like section resulting from cutting the circular convex lens by a plane perpendicular to a centerline.