Plant illumination device and method for dark growth chambers

A lighting device and plant technology, applied in the direction of botany equipment and methods, lighting devices, parts of lighting devices, etc., can solve the problems of poor quality harvest, not allowing emission spectrum analysis and tuning, poor main light source, etc.
CN103563101AActive Publication Date: 2014-02-05VALOYA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
VALOYA
Publication Date
2014-02-05

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Abstract

The invention relates to an improved method to produce artificial light for plant cultivation. In more particular, the invention relates to an illumination device with a semiconductor light emission solution and device suited for plant cultivation in a greenhouse and / or dark growth chamber environment. The best mode of the invention is considered to be a lighting device with LEDs that produces an emission spectrum similar to the photosynthetically active radiation (PAR) spectrum in a dark growth chamber. The methods and arrangements of the invention allow more precise spectral tuning of the emission spectrum for lights used in plant (310, 311) cultivation. The invention therefore realises unexpected improvements in the photomorphogenetic control of plant growth, and further improvements in plant production, especially in dark growth chambers, such as basements.
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Description

technical field

[0001] The present invention relates to an improved method of producing artificial light for plant cultivation. More specifically, the present invention relates to a lighting device having a semiconductor light emitting scheme suitable for plant cultivation in a greenhouse environment. Background technique

[0002] Only about 50% of the radiation reaching the ground is photosynthetically active radiation (PAR). PAR is interpreted as encompassing the wavelength range between 300nm and 800nm ​​of the electromagnetic spectrum. Photosynthesis and photoperiodism, phototropism and photomorphogenesis are four representative processes related to the interaction between radiation and plants. The following expression shows a simplified chemical equation for photosynthesis:

[0003] 6H 2 O+6CO 2 (+photon energy)→C 6 h 12 o 6 +6O 2 .

[0004] Figure 1A The two interconvertible forms of the most common photosynthetic and photomorphogenic photoreceptors (such as...

Claims

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