LENS ASSEMBLY, IMAGING DEVICE, DETECTION DEVICE, AND DETECTION SYSTEM

WIPO Patent Application WO/2022/100271

A1

A lens assembly (10), an imaging device (20), a detection device and a detection system. The lens assembly (10) is applied to a lens, and comprises multiple lens elements (111-114,121-126) sharing an optical axis. An entrance pupil position and a front focal point of the lens assembly (10) are located outside the lens assembly (10) at the object side of the lens assembly (10). An object-side principal point of the lens assembly (10) is located farther from the lens assembly (10) than the front focal point. A corresponding side peripheral imaging expansion angle of the lens assembly (10) satisfies: α = arctan|H/2f|, wherein α denotes the side peripheral imaging expansion angle, 18° ≦ α ≦ 25°, H denotes the height of a corresponding full field of view of the lens assembly (10), f denotes the focal length of the lens assembly (10), and f< 0. A single imaging device (20) comprising the lens assembly (10) can simultaneously perform imaging of a surface of a workpiece facing the imaging device (20) and a side peripheral surface of the workpiece and provide images of better quality.

CUI KAIXIANG (CN)

PCT/CN2021/118312

May 19, 2022

September 14, 2021

Click for automatic bibliography generation  

BEIJING LEADERTECH INTELLIGENT EQUIPMENT CORP (CN)

G02B13/00; B07C5/02; B07C5/342; B07C5/36; G03B37/00

WO2014073685A1

2014-05-15

CN210666175U	2020-06-02
CN112099204A	2020-12-18
CN109991724A	2019-07-09
CN105182504A	2015-12-23
CN109143532A	2019-01-04
CN108318994A	2018-07-24
CN202281857U	2012-06-20
JPS57104107A	1982-06-29

CHOFN INTELLECTUAL PROPERTY (CN)

View/Download PDF      PDF Help

Previous Patent: METHOD FOR TESTING TARGET NUCLEIC ACID IN SAMPLE

Next Patent: INDOOR POSITIONING METHOD AND RELATED APPARATUS