Light source module for plant cultivation and light irradiation device including the same

Patent metadata

Field	Value
Publication number	US-11578840-B2
Application number	US-202117194906-A
Country	US
Kind code	B2
Filing date	Mar 8, 2021
Priority date	Mar 10, 2020
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

Disclosed herein are a light source module for plant cultivation and a light device including the same. The light source module for plant cultivation may include at least one main light source emitting white light. The white light from the main light source is provided to a plant during cultivation to improve the growth and phytochemical content of the plant. In addition, the white light may have peak wavelengths of 430 nm or less, 440 nm to 460 nm, 510 nm to 530 nm, and 600 nm to 630 nm.

First claim

What is claimed is:

1. A light source module for plant cultivation, comprising:
a substrate;
at least one main light source electrically connected to the substrate and comprising:
a first element for emitting first light having first color; and
a second element for emitting a plurality of lights having at least three different colors;

wherein the at least one main light source is operable to emit white light by mixing the first light and the plurality of lights, whereby the white light is provided to a selected plant during cultivation to improve growth and phytochemical content of the selected plant,
wherein a spectrum of the white light emitted from the at least one main light source has at least four peak wavelengths over a visible spectrum and application of the white light to the selected plant during cultivation is configured to increase dry weight and fresh weight of the selected plant; and
wherein the at least four peak wavelengths over the visible spectrum include two peak wavelengths in a wavelength range of the same color such that the two peak wavelengths are present in the wavelength range from 410 nm to 460 nm of blue light and the two peak wavelengths cause the phytochemical content of the selected plant to increase.

2. The light source module according to claim 1 , wherein the first element further comprises a light emitting diode and the second element further comprises a wavelength conversion part covering the light emitting diode.

3. The light source module according to claim 2 , wherein the light emitting diode of the main light source emits violet light as the first light.

4. The light source module according to claim 2 , wherein the wavelength conversion part of the main light source comprises a light transmissive resin and blue, green, and orange phosphors dispersed in the light transmissive resin.

5. The light source module according to claim 1 , wherein the white light has a color temperature of 5,000 K; and
the at least four peak wavelengths comprise 410 nm to 430 nm or less, 440 nm to 460 nm, 510 nm to 530 nm, and 600 nm to 630 nm.

6. The light source module according to claim 1 , further comprising:
an auxiliary light source emitting auxiliary light necessary for photosynthesis of the selected plant,
wherein the auxiliary light is red light having a peak wavelength of 630 nm to 670 nm.

7. The light source module according to claim 6 , wherein the auxiliary light source comprises a light emitting diode and a wavelength conversion part covering the light emitting diode.

8. The light source module according to claim 7 , wherein the light emitting diode of the auxiliary light source emits blue light.

9. The light source module according to claim 7 , wherein the wavelength conversion part of the auxiliary light source comprises a red phosphor.

10. A light device comprising:
at least one light source module emitting light provided to a selected plant during cultivation to improve the growth and phytochemical content of the selected plant, the at least one light source module comprising at least one main light source emitting white light,
wherein the at least one main light source further comprises:
a first element for emitting first light having first color; and
a second element for emitting a plurality of lights having at least three different colors; and

wherein the at least one main light source is operable to emit white light by mixing the first light and the plurality of lights;
a spectrum of the white light emitted from the at least one main light source has at least four peak wavelengths over a visible spectrum; and
the at least four peak wavelengths over the visible spectrum include two peak wavelengths in a wavelength range of the same color such that the two peak wavelengths are present in the wavelength range from 410 nm to 460 nm of blue light and the two peak wavelengths cause the phytochemical content of the selected plant to increase.

11. The light device according to claim 10 , wherein the first element further comprises a light emitting diode and the second element further comprises a wavelength conversion part covering the light emitting diode.

12. The light device according to claim 11 , wherein the light emitting diode of the main light source emits violet light.

13. The light device according to claim 12 , wherein:
the white light has a color temperature of 5,000 K; and
the white light has peak wavelengths of 410 nm to 430 nm or less, 440 nm to 460 nm, 510 nm to 530 nm, and 600 nm to 630 nm.

14. The light device according to claim 11 , wherein the wavelength conversion part of the main light source comprises a light transmissive resin and blue, green, and orange phosphors dispersed in the light transmissive resin.

15. The light device according to claim 10 , wherein the light source module further comprises an auxiliary light source emitting auxiliary light necessary for photosynthesis of the selected plant, the auxiliary light being red light having a peak wavelength of 630 nm to 670 nm.

16. The light device according to claim 15 , wherein the auxiliary light source comprises a light emitting diode and a wavelength conversion part covering the light emitting diode.

17. The light source module according to claim 16 , wherein the light emitting diode of the auxiliary light source emits blue light.

18. The light source module according to claim 16 , wherein the wavelength conversion part of the auxiliary light source comprises a red phosphor.

19. A light source module for plant cultivation, comprising:
a substrate;
at least one main light source electrically connected to the substrate and comprising:
a light emitting diode operable to emit violet light; and
a wavelength conversion part including a light transmissive resin and blue, green, and orange phosphors dispersed in the light transmissive resin;

wherein the at least one main light source is operable to emit white light by mixing the violet light with blue, green and orange lights, whereby the white light is provided to a selected plant during cultivation to improve the growth and phytochemical content of the selected plant,
wherein a spectrum of the white light emitted from the at least one main light source has at least four peak wavelengths over a visible spectrum;
two peak wavelengths among the at least four peak wavelengths over the visible spectrum are present in a wavelength range shorter than 500 nm; and
the at least four peak wavelengths over the visible spectrum include two peak wavelengths in a wavelength range of the same color such that the two peak wavelengths are present in the wavelength range from 410 nm to 460 nm of blue light and the two peak wavelengths cause the phytochemical content of the selected plant to increase.

20. The light source module of claim 19 , wherein the four peak wavelengths have peak wavelengths of 410 nm to 430 nm or less, 440 nm to 460 nm, 510 nm to 530 nm, and 600 nm to 630 nm.

Assignees

• Seoul Viosys Co Ltd

Inventors

• Ko Sang Min

Classifications

• A01G7/045 Primary

  with electric lighting · CPC title

• F21K9/62

  using mixing chambers, e.g. housings with reflective walls · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V9/40

  with provision for controlling spectral properties, e.g. colour, or intensity · CPC title

• F21K9/64 Primary

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title