Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/137330
Kind Code:
A1
Abstract:
An optical device of the present invention may be characterized by: a light irradiation unit that irradiates light toward a specific space; a light receiving unit for receiving light and generating electric signals in response to an amount of the received light; and discriminating peaks of the electrical signals, sensing a volume flow rate of dust passing through the specific space through a time difference between the peaks of the electrical signals, and calculating a dust concentration in the specific space by using the volume flow rate.
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Inventors:
KO YONGJUN (KR)
KIM TAEHYUNG (KR)
KIM MISOOK (KR)
KIM BOLAM (KR)
LEE SEUNGHYUN (KR)
CHOI JOOSEUNG (KR)
AHN YONGHO (KR)
CHOI WANSEOP (KR)
KIM OEDONG (KR)
KIM TAEHYUNG (KR)
KIM MISOOK (KR)
KIM BOLAM (KR)
LEE SEUNGHYUN (KR)
CHOI JOOSEUNG (KR)
AHN YONGHO (KR)
CHOI WANSEOP (KR)
KIM OEDONG (KR)
Application Number:
PCT/KR2019/018829
Publication Date:
July 08, 2021
Filing Date:
December 31, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
G01N15/02; G01N15/06; G01N15/14
Foreign References:
| KR20190000995A | 2019-01-04 | |||
| JP2009058397A | 2009-03-19 | |||
| KR20170078552A | 2017-07-07 | |||
| KR101063966B1 | 2011-09-14 | |||
| KR102008654B1 | 2019-08-08 |
Attorney, Agent or Firm:
KBK & ASSOCIATES (KR)
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