Title:
INSPECTION APPARATUS USING LIGHTING
Document Type and Number:
WIPO Patent Application WO/2021/085726
Kind Code:
A1
Abstract:
Disclosed is an inspection apparatus using lighting. The inspection apparatus using lighting of the present invention comprises: an optical unit including a light guide plate through which light enters from a side surface, and a reflection member which reflects downward the light that has entered through the light guide plate; a frame part surrounding the side surface of the light guide plate such that the light does not leak out and enters only through the side surface of the light guide plate; and a light source unit which is inside the frame part and faces the side surface of the light guide plate, and which includes an upper light source installed so as to emit light from the upper side of the side surface of the light guide plate, and a lower light source installed so as to emit light to the side surface of the light guide plate from the lower side.
Inventors:
CHO YOUNG SUN (KR)
Application Number:
PCT/KR2019/016308
Publication Date:
May 06, 2021
Filing Date:
November 26, 2019
Export Citation:
Assignee:
LFINE CO LTD (KR)
International Classes:
G01N21/88; F21V8/00
Foreign References:
| JP2010287548A | 2010-12-24 | |||
| JP2010112735A | 2010-05-20 | |||
| JP2016085171A | 2016-05-19 | |||
| JP2013098009A | 2013-05-20 | |||
| EP3511773A1 | 2019-07-17 |
Attorney, Agent or Firm:
LIM, Hyung Chul et al. (KR)
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