Lighting system for horticultural applications
First Claim
1. A horticultural lighting system for irradiating plants in a greenhouse or other living organisms in a predetermined environment, the system comprisinga first string of at least one light element,a second string of at least one light element, both strings being electrically connected in parallel with each other,a power supply unit providing an AC current/voltage to the parallel circuit of the strings, andmeans for energizing the first string during a first half period of the AC voltage and the second string during a second half period of the AC voltage, so that each string radiates pulsed light, said first string and said second string being arranged irradiated, wherein the lighting system is installed in the greenhouse, where the greenhouse has a plurality of different areas, and wherein the first string and the second string are arranged such that only a first area of the greenhouse is irradiated by the pulsed light of the first string and only a second area of the greenhouse different from the first area is irradiated by the pulsed light of the second string.
3 Assignments
0 Petitions
Accused Products
Abstract
Horticultural lighting system comprising a first string (22) of at least one light element (16, 40), a second string (24) of at least one light element (16, 40), both strings being electrically connected in parallel with each other, a power supply unit (12, 50, 60, 70) providing an AC current/voltage to the parallel circuit of the strings, and means for energizing (26, 42) the first string during a first half period of the AC voltage and the second string during a second half period of the AC voltage, so that each string radiates pulsed light, said first string and said second string being arranged such that different areas (32, 34) are irradiated. The lighting system is also to be used in an environment where living organisms are irradiated with light, or a greenhouse for exposing plants to pulsed light. A corresponding method is also claimed.
64 Citations
14 Claims
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1. A horticultural lighting system for irradiating plants in a greenhouse or other living organisms in a predetermined environment, the system comprising
a first string of at least one light element, a second string of at least one light element, both strings being electrically connected in parallel with each other, a power supply unit providing an AC current/voltage to the parallel circuit of the strings, and means for energizing the first string during a first half period of the AC voltage and the second string during a second half period of the AC voltage, so that each string radiates pulsed light, said first string and said second string being arranged irradiated, wherein the lighting system is installed in the greenhouse, where the greenhouse has a plurality of different areas, and wherein the first string and the second string are arranged such that only a first area of the greenhouse is irradiated by the pulsed light of the first string and only a second area of the greenhouse different from the first area is irradiated by the pulsed light of the second string.
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11. A method of irradiating plants in a greenhouse or other living organisms in a predetermined environment with pulsed light from light elements arranged in two parallel-connected strings, which strings are both adapted to radiate light to different areas, said method comprising the steps of:
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providing an AC current/voltage, energizing one string during the first half period of the AC voltage for radiating light to a first area of the greenhouse or predetermined environment, and energizing the other string during the second half period of the AC voltage for radiating light to a second area different to the first area; providing the two parallel-connected strings in the greenhouse; irradiating plants in the first area of the greenhouse in response to energizing the one string during the first half period of the AC voltage; and irradiating plants in the second area of the greenhouse in response to energizing the other string during the second half period of the AC voltage. - View Dependent Claims (12, 13, 14)
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Specification