US 12,264,910 B2
Target unit of machine vision system, target assembly and machine vision system
Wenhui Luo, Guangdong (CN)
Assigned to AUTEL INTELLIGENT TECHNOLOGY CORP., LTD., Guangdong (CN)
Filed by AUTEL INTELLIGENT TECHNOLOGY CORP., LTD., Guangdong (CN)
Filed on Jan. 6, 2021, as Appl. No. 17/142,613.
Application 17/142,613 is a continuation of application No. PCT/CN2019/111922, filed on Oct. 18, 2019.
Claims priority of application No. 201811225379.0 (CN), filed on Oct. 20, 2018.
Prior Publication US 2021/0156680 A1, May 27, 2021
Int. Cl. G01B 11/275 (2006.01); G06T 7/00 (2017.01)
CPC G01B 11/2755 (2013.01) [G06T 7/0004 (2013.01); G01B 2210/283 (2013.01); G01B 2210/303 (2013.01); G06T 2207/30204 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A target unit of a machine vision system, comprising:
a protective plate, comprising a connection surface;
a light absorbing layer; and
a light reflecting layer, the light reflecting layer being connected to the light absorbing layer, one of the light absorbing layer and the light reflecting layer comprising a preset pattern and being connected to the protective plate through the connection surface, and a surface that is of the other of the light absorbing layer and the light reflecting layer and that faces away from the protective plate being an outer surface of the target unit;
wherein
the light absorbing layer comprises the preset pattern, the light absorbing layer being connected to the protective plate through the connection surface;
the light reflecting layer is connected to the light absorbing layer, a surface of the light reflecting layer that faces away from the protective plate being the outer surface of the target unit; and
the pattern comprises a pattern light absorbing region and a pattern light transmission region;
wherein
the light absorbing layer comprises a film negative, the film negative being connected to the protective plate through the connection surface.