US 12,376,532 B2
Light source for plant cultivation and method of plant cultivation using thereof
Myung Min Oh, Seoul (KR); and Da-seul Choi, Chungcheongbuk-do (KR)
Assigned to Chungbuk National University Industry-Academic Cooperation Foundation, Chungcheongbuk-do (KR); and Seoul Viosys Co., Ltd., Gyeonggi-do (KR)
Filed by CHUNGBUK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Chungcheongbuk-do (KR); and SEOUL VIOSYS CO., LTD., Gyeonggi-do (KR)
Filed on Mar. 31, 2021, as Appl. No. 17/219,367.
Claims priority of provisional application 63/003,355, filed on Apr. 1, 2020.
Prior Publication US 2021/0307254 A1, Oct. 7, 2021
Int. Cl. A01G 7/04 (2006.01); H10H 20/824 (2025.01); A01G 22/15 (2018.01)
CPC A01G 7/045 (2013.01) [H10H 20/8242 (2025.01); A01G 22/15 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A light source for plant cultivation adapted to emit light to a plant, the light source comprising:
a first light source configured to emit a first type of light for photosynthesis of the plant, the first type of light having at least two peaks in the visible spectrum; and
a second light source, the second light source being a phytochemical adjustment light source that is configured to emit a second type of light for adjustment of phytochemicals in the plant, the second type of light having a third peak in a different wavelength band from the at least two peaks of the first type of light,
a controller configured to control the first light source and the second light source such that
the third peak of the phytochemical adjustment light source is in the wavelength band of 360 nm to 420 nm,
an intensity of the first type of light at a first peak is consistently less than half the intensity of the phytochemical adjustment light source at the third peak,
the third peak is a highest peak of the second type of light, and
in the first peak is a second highest peak of the first type of light and is in the wavelength band of 420 nm to 500 nm.