公开(公告)号：US20190257762A1

公开(公告)日：2019-08-22

申请号：US16256578

申请日：2019-01-24

Applicant: CHROMA ATE INC.

Inventor： Shih-Yao PAN ,  Szuyen LIN

IPC: G01N21/88 ,  G01N21/956

Abstract: A detection device, applied to detect an object under test, includes a beam splitter, a pattern beam generator, an image-capturing device and a processor. The pattern beam generator and the image-capturing device are located to two different sides of the beam splitter in a conjugate arrangement. The pattern beam generator is to generate a preset pattern, and the preset pattern is then projected onto the object under test via the beam splitter. The image-capturing device is to capture a real pattern via the beam splitter, in which the real pattern is generated on the object under test after the preset pattern is projected onto the object under test. The processor is to compare the preset pattern and the real pattern and to further determine a quality of the object under test.