A spectrally adjustable horticulture light source system

Abstract

The utility model relates to a kind of spectrum adjustable light source system for planting, comprising: natural light component includes light collector, beam splitter, natural light wave filter, light collector, light guide plate, first optical waveguide, light collector is connected with beam splitter by first optical waveguide, beam splitter is connected with natural light wave filter by first optical waveguide, natural light wave filter is connected with light collector by first optical waveguide, light collector is connected with light guide plate;Artificial light component includes artificial light source, artificial light wave filter, artificial light source is connected with artificial light wave filter by first optical waveguide;Control component includes spectrum analyzer, control equipment, spectrum analyzer is connected with beam splitter, spectrum analyzer is connected with control equipment, and control equipment is electrically connected with natural light wave filter, artificial light wave filter, artificial light source, it provides mixed light source with complete spectrum, guarantees the requirement of different plants, also reduce the heat and cost generated by mixed light source, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of plant cultivation light source equipment, and in particular to a spectrally adjustable light source system for cultivation. Background Technology

[0002] Light is one of the most important environmental factors for plant growth and development, and providing a suitable light source directly affects plant growth. Currently, greenhouse cultivation generally uses natural light as the light source. Natural light can only illuminate a single layer of plants and is not suitable for multi-layered plant cultivation. Indoor cultivation generally uses artificial light sources, such as LED or halogen light sources. However, LED light sources have an incomplete spectrum and cannot be used for different types of plants. Although halogen light sources have a complete spectrum, they generate a lot of heat and consume a lot of electricity, making them impractical. Utility Model Content

[0003] The purpose of this invention is to provide a spectrally adjustable planting light source system, which has the characteristics of a complete spectrum and low heat generation, and has good applicability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A spectrally adjustable planting light source system includes: a natural light component, comprising a light collector, a beam splitter, a natural light filter, a beam splitter, a light guide plate, and a first optical waveguide. The light collector is connected to the beam splitter via the first optical waveguide, the beam splitter is connected to the natural light filter via the first optical waveguide, the natural light filter is connected to the beam splitter via the first optical waveguide, and the beam splitter is connected to the light guide plate.

[0006] An artificial light component includes an artificial light source and an artificial light filter, wherein the artificial light source and the artificial light filter are connected through a first optical waveguide;

[0007] The control component includes a spectrometer and a control device. The spectrometer is connected to the spectroscope and the control device, and the control device is electrically connected to the natural light filter, the artificial light filter, and the artificial light source.

[0008] Preferably, the natural light component further includes a second optical waveguide, and the beam splitter and the light guide plate are connected through the second optical waveguide; the aperture of the second optical waveguide is smaller than the aperture of the first optical waveguide.

[0009] Preferably, the artificial light source is halogen light.

[0010] Preferably, both the natural light filter and the artificial light filter are provided with multiple thin film filters, and the thin film filters are arranged at intervals along the circumferential direction.

[0011] Preferably, the natural light component further includes a brightness enhancement film, a prism film, a light-diffusing film, and a reflective back film, wherein the light-diffusing film, the prism film, and the brightness enhancement film are sequentially disposed on one side of the light guide plate, and the reflective back film is disposed on the other side of the light guide plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The above-described technical solution provides a spectrally adjustable planting light source system. A light collector gathers natural light, which is then transmitted through a first optical waveguide to a beam splitter. The beam splitter projects a portion of the natural light to a spectrometer for spectral and intensity analysis. The beam splitter transmits the remaining natural light through a natural light filter for filtration. The filtered natural light is then transmitted through the first optical waveguide to the beam splitter and then through a second optical waveguide to a light guide plate. The light guide plate evenly distributes the natural light to different plants. Additionally, a control device calculates the spectrum and intensity of the natural light. If a spectrum is missing or the intensity is too low, an artificial light source is activated. This artificial light, after being filtered by an artificial light filter, is first transmitted through the first optical waveguide to the beam splitter and then through the second optical waveguide to the light guide plate. The light guide plate evenly distributes the artificial light to different plants, thus achieving complementary use of natural and artificial light. This provides a mixed light source with a complete spectrum, ensuring the needs of different plants, while also reducing the heat and cost generated by the mixed light source and improving its practicality. Attached Figure Description

[0014] Figure 1 A schematic diagram of a spectrally adjustable planting light source system provided in an embodiment of this utility model;

[0015] Figure 2 A schematic diagram of the second optical waveguide, optical guide plate, brightness enhancement film, prism film, light-diffusing film, and reflective back film provided for embodiments of this utility model.

[0016] 1. Concentrator; 2. First optical waveguide; 3. Beam splitter; 4. Spectrometer; 5. Control equipment; 6. Natural light filter; 7. Beam splitter and concentrator; 8. Second optical waveguide; 9. Optical guide plate; 10. Artificial light source; 11. Artificial light filter; 12. Brightness enhancement film; 13. Prism film; 14. Softening film; 15. Reflective backing film. Detailed Implementation

[0017] The present invention will now be described in more detail with reference to the accompanying drawings. It should be noted that the description of the present invention with reference to the accompanying drawings is merely illustrative and not restrictive. Various embodiments can be combined with each other to form other embodiments not shown in the following description.

[0018] Please see Figures 1 to 2 This utility model provides a light source system for planting with adjustable spectrum, including a light collector 1, a first optical waveguide 2, a beam splitter 3, a spectrum analyzer 4, a control device 5, a natural light filter 6, a beam splitter and light collector 7, a second optical waveguide 8, a light guide plate 9, an artificial light source 10, an artificial light filter 11, a light enhancement film 12, a prism film 13, a light-diffusing film 14, and a reflective backing film 15.

[0019] Specifically, the light collector 1 can be placed anywhere that can collect natural light. Therefore, the planting light source system provided in this application can be used in indoor spaces with opaque walls, or in multi-layered greenhouses. The light collector 1 can be a parabolic reflector with an opening directly below the focal point of the reflector. A first optical waveguide 2 is placed in the opening. The first optical waveguide 2 can be an 8mm black-skinned optical fiber. Natural light is focused at the focal point of the reflector and then reflected into the second optical waveguide 2, and then transmitted to the beam splitter 3.

[0020] The beam splitter 3 can specifically be a wedge-shaped flat beam splitter. The flat beam splitter can be placed in the optical path at a 45° incident angle. The flat beam splitter is coated with a thin film, which can reflect a portion of the natural light. The remaining natural light passes through the beam splitter 3 and is transmitted to the natural light filter 6. The reflected natural light is projected onto the photoelectric sensor of the spectrum analyzer 4, where real-time spectral and light intensity analysis is performed. The analysis results are transmitted to the control device 5. The control device 5 compares the planting data with the real-time natural spectral data, i.e., compares the type of the target crop and its current growth status, to determine whether to shield or enhance a certain wavelength of natural light, thereby providing the most suitable light for plant growth.

[0021] The optical filter 6 includes multiple embedded thin-film filters, which can be arranged sequentially along the circumference. At this time, the control device 5 can control the natural light filter 6 to rotate, so that the corresponding thin-film filters can filter the natural light, thereby shielding or enhancing a certain wavelength of natural light. The filtered natural light is transmitted to the beam splitter 7 through the first optical waveguide 2.

[0022] The beam splitter 7 consists of an optical fiber coupler and has two light source input ends, namely a natural light input end and an artificial light input end. The beam splitter 7 can combine natural light and artificial light to form a mixed light. The mixed light is then distributed to multiple output ends. The output ends are connected to the second optical waveguide 8. The second optical waveguide 8 has a small aperture, that is, the second optical waveguide 8 is a small-diameter optical fiber. Then the mixed light is transmitted to the optical guide plate 9.

[0023] In addition, the control device 5 calculates the spectrum and intensity of natural light. If the spectrum is missing or the intensity is too low, the artificial light source 10 is turned on. After being filtered by the artificial light filter 11, the artificial light is first transmitted to the beam splitter 7 through the first optical waveguide 2, and then transmitted to the light guide plate 9 through the second optical waveguide 8. This achieves the complementary use of natural light and artificial light, providing a mixed light source with a complete spectrum to meet the needs of different plants, while also reducing the heat and cost generated by the mixed light source and improving its practicality.

[0024] The light guide plate 9 has an inclined surface and a flat surface. A reflective backing film 15 is provided on the inclined surface, and a light-diffusing film 14, a prism film 13, and a brightness-enhancing film 12 are sequentially provided on the flat surface. The second optical waveguide 8 is connected to the larger end of the light guide plate 9. The mixed light enters the light guide plate 9 through the second optical waveguide 8. According to Snell's law, the mixed light will be reflected out of the light guide plate 9. The reflected mixed light passes through the light-diffusing film 14, the prism film 13, and the brightness-enhancing film 12 in sequence, and can then be evenly scattered on the plant leaf surface.

[0025] It is conceivable that the planting light source system provided by this utility model, when the natural light intensity meets the requirements, does not require the use of artificial light source 10, thereby greatly reducing heat generation and cost. Furthermore, it can provide the most suitable light source for plant growth at different growth stages, thus benefiting plant growth.

[0026] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A spectrally adjustable light source system for planting, characterized in that, include: The natural light assembly includes a light collector (1), a beam splitter (3), a natural light filter (6), a beam splitter (7), a light guide plate (9), and a first optical waveguide (2). The light collector (1) is connected to the beam splitter (3) through the first optical waveguide (2), the beam splitter (3) is connected to the natural light filter (6) through the first optical waveguide (2), the natural light filter (6) is connected to the beam splitter (7) through the first optical waveguide (2), and the beam splitter (7) is connected to the light guide plate (9). The artificial light component includes an artificial light source (10) and an artificial light filter (11), wherein the artificial light source (10) and the artificial light filter (11) are connected through the first optical waveguide (2); The control components include a spectrometer (4) and a control device (5). The spectrometer (4) is connected to the spectroscope (3), the spectrometer (4) is connected to the control device (5), and the control device (5) is electrically connected to the natural light filter (6), the artificial light filter (11), and the artificial light source (10).

2. The spectrally adjustable planting light source system as described in claim 1, characterized in that, The natural light component also includes a second optical waveguide (8), and the beam splitter (7) and the light guide plate (9) are connected through the second optical waveguide (8); the aperture of the second optical waveguide (8) is smaller than the aperture of the first optical waveguide (2).

3. The spectrally adjustable planting light source system as described in claim 1, characterized in that, The artificial light source (10) is halogen light.

4. The spectrally adjustable planting light source system as described in claim 1, characterized in that, Both the natural light wave filter (6) and the artificial light wave filter (11) are provided with multiple thin film filters, and each of the thin film filters is arranged at intervals along the circumferential direction.

5. The spectrally adjustable planting light source system as described in claim 1, characterized in that, The natural light component also includes a light enhancement film (12), a prism film (13), a light softening film (14), and a reflective back film (15). The light softening film (14), the prism film (13), and the light enhancement film (12) are sequentially disposed on one side of the light guide plate (9), and the reflective back film (15) is disposed on the other side of the light guide plate (9).

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