Method and apparatus for irradiation of plants using optoelectronic devices
US5012609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1988 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Dec 12, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S47/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are a method and an apparatus for irradiation of plants using optoelectronic devices. In accordance with this invention, optoelectronic devices that emit radiant energy at the appropriate wavelength are operated in a continuous mode or pulsed asymmetrically at a frequency and level of electrical power that results in sufficient irradiance to support plant growth and development. The apparatus consists of: (1) an array of optoelectronic devices, primarily light emitting diodes, for producing irradiance in each of three different wavelength regions necessary for specific plant photobiological reactions, (2) a pulse generator and associated electric power driving components, and (3) an electric direct current (D.C.) power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.