An illumination system with a plant light emitting device and a lens thereof

Abstract

The present application relates to a kind of plant and animal light emitting device and its lens.The light emitting device includes light source and the first lens, second lens and third lens arranged in turn along the light direction of light source.The light emitting device generates rectangular illumination area through the first lens, and realizes the change of divergence angle by the continuous refraction of second lens and third lens.The light changing lens group changes the illumination divergence angle of plant and animal light emitting device by approaching or moving away from the first lens along the optical axis direction of light source, thereby changing the light intensity of light emitting device irradiated to the object table, so that light emitting device can change the illumination area and illumination intensity of light emitting device on the irradiated surface according to the morphology of the irradiated object and / or illumination intensity requirement, avoid the situation that the irradiated plant and animal are located outside the illumination area due to large divergence angle when traditional lighting equipment is illuminated, and the situation that light intensity is unevenly distributed on the irradiated surface.

Description

Technical Field

[0001] This invention relates to the field of plant and animal lighting technology, and in particular to a supplementary lighting system with a plant light-emitting device and its lens. Background Technology

[0002] Light intensity is closely related to the growth of plants and animals. Taking plants as an example, different light uniformity will inevitably lead to different yields and harvest times. Based on the spatial location, growth stage characteristics, and / or growth element characteristics of the plant within the growing space, a light source and lighting control scheme corresponding to the plant's light requirements within the light source network are selected to match the light intensity of the light-emitting device with the plant's growth needs. Plant growth is regulated by various plant hormones, among which auxin plays an important role in plant morphogenesis. Auxin generally refers to indoleacetic acid, which is widely present in various plant tissues. At low concentrations, it can promote plant growth, especially cell elongation. Auxin is uniformly produced in the apical meristem of plants and, under the influence of light, undergoes lateral transport from the illuminated side to the shaded side, resulting in uneven distribution. This unevenly distributed auxin acts on the elongation zone of the plant, accelerating the elongation of cells on the shaded side, causing phototropism. This phenomenon, in which light influences plant growth and development, is called photomorphogenesis. Different growth stages of plants require different light intensities. To provide plants with specific light intensities at different growth stages, adjustable light intensity lighting devices for plants and animals have emerged.

[0003] The plant and animal light-emitting device of the present invention uses a lens to focus light, thereby increasing the light intensity in the effective cultivation area and improving the energy utilization efficiency of the light source.

[0004] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a bioluminescent device for plants and animals. The device includes a light source and a first lens, a second lens, and a third lens arranged sequentially along the light emission direction of the light source. The first lens is designed based on a freeform surface, enabling the light spot from the light source to be rectangular. The second and third lenses form a variable-light lens group. Preferably, the divergence angle of the light emitted from the light source is changed through continuous refraction by the second and third lenses. The variable-light lens group alters the light divergence angle of the bioluminescent device by moving closer to or further away from the first lens along the optical axis of the light source, thereby changing the light intensity illuminating the platform.

[0006] For vegetable cultivation in plant factories, seedlings need to be transplanted 2-3 times before reaching maturity, with each transplant reducing the planting density. Some plant factories, constrained by labor costs and production scale, only perform 1-2 transplants, or even none at all. Regardless of whether transplanting is performed, a large amount of space is left around the plant after planting or transplanting to meet its future growth needs. This space still receives continuous sunlight even without plant cover, which is not conducive to improving light energy utilization.

[0007] Preferably, the light-emitting device uses a light source for light distribution design. By changing the distance between the light-changing lens group composed of the second and third lenses and the first lens, the divergence angle of the light-emitting device is changed, so that the light-emitting device can change the illumination area and illumination intensity on the irradiated surface according to the shape of the irradiated object and / or the light intensity requirements.

[0008] Preferably, this light-emitting device changes the distance between the variable light lens group and the first lens so that the illumination range of the light-emitting device just covers the light-absorbing parts of the plant, thereby improving the light energy utilization rate and realizing that the illuminated area increases with the increase of the plant leaf area.

[0009] Preferably, when the light intensity required by the illuminated plants and animals changes, the light-emitting device adjusts the distance between the variable light lens group and the first lens, thereby adjusting the light intensity received by the illuminated plants and animals on the platform.

[0010] Preferably, the light-emitting device generates a rectangular lighting area through the first lens, and several light-emitting devices are arranged on the mounting plate with the edges of the rectangular lighting area overlapping to form a larger and more uniform lighting area. This can eliminate blind spots and avoid the situation where, when traditional lighting equipment provides close-range lighting, the illuminated plants and animals are located outside the lighting area due to the large divergence angle, as well as the uneven distribution of light intensity on the irradiated surface.

[0011] According to a preferred embodiment, the first lens includes an incident freeform surface, a total internal reflection surface, and an exit freeform surface. Light emitted from the light source is transmitted through the incident freeform surface and / or reflected by the total internal reflection surface, then exits from the exit freeform surface to form a rectangular light spot. The exit freeform surface satisfies the following: Where F is the luminous flux incident on the freeform surface, α is the incident angle corresponding to the light rays emitted from the exiting freeform surface, β is the critical value of the angle distribution between the incident freeform surface and the total internal reflection surface, and A is a coefficient. Preferably, A is 2.5~4. Preferably, β=arctan(d / (hl)); where d is the thickness of the first lens, h is the distance from the light source to the first lens, and l is the length of the emitting surface of the light source chip. Preferably, the light sources used in this invention are all multi-chip LED light sources.

[0012] Preferably, the first lens reflects the emitted light from the light source to form a rectangular illumination spot with uniform light intensity distribution on the irradiated surface. This facilitates the overlap of the edges of the rectangular illumination area by multiple light-emitting devices, thereby forming a larger uniform illumination area. This eliminates blind spots and avoids the situation where, when traditional lighting equipment provides close-range illumination, the illuminated plants and animals are located outside the illumination area due to the large divergence angle, as well as the uneven light intensity distribution on the irradiated surface.

[0013] According to a preferred embodiment, the second lens and the third lens are meniscus lenses. The second lens and the third lens are assembled within the lens barrel with their optical axes aligned to form a variable-curvature lens group. Preferably, the second lens and the third lens are arranged in ascending order of curvature.

[0014] According to a preferred embodiment, the light-emitting device further includes a mounting base and a transmission mechanism. The light source is disposed on one side of the mounting base, and at least two of the transmission mechanisms are disposed around the light source on the mounting base. The at least two transmission mechanisms are connected to the lens barrel via configured sliders, allowing the variable-light lens group to move closer to or further away from the light source along the optical axis, thereby changing the divergence angle of the light beam generated by the light-emitting device.

[0015] Preferably, the variable-light lens group changes the size and intensity of the rectangular light spot on the irradiated surface by moving closer to or further away from the first lens. Preferably, for a single plant, the light-emitting device can adjust the distance between the variable-light lens group and the first lens to change the irradiated area of ​​the plant, adapting to the plant's different light absorption areas during its growth period. For multiple plants placed on a shelf, after the light-emitting device adjusts the distance between the variable-light lens group and the first lens, especially when the illumination ranges of multiple light-emitting devices overlap due to the adjustment of the distance, the plants on the shelf can receive multi-angle illumination, thereby promoting plant growth.

[0016] According to a preferred embodiment, the transmission mechanism further includes a transmission shaft and a support. One end of the support is connected to the mounting base, and the other end is connected to the transmission shaft that passes through the slider.

[0017] According to a preferred embodiment, at least one of the transmission mechanisms is equipped with a motor. The motor is connected to the transmission shaft, such that the slider disposed on the transmission shaft can drive the lens barrel to move along the light emission direction of the plant and animal light-emitting device, thereby changing the distance between the light-changing lens group and the light source.

[0018] According to a preferred embodiment, the plant and animal luminescence device changes the size of the rectangular light spot on the illuminated surface by altering the distance L between the variable-light lens group and the first lens. The distance L between the variable-light lens group and the first lens satisfies: Wherein, L1 is the maximum distance between the variable light lens group and the first lens, L2 is the minimum distance between the variable light lens group and the first lens, B is the light intensity on a certain illumination surface when the variable light lens group and the first lens are at their maximum distance, and E is the required light intensity on that illumination surface.

[0019] Preferably, the light-emitting device can change the light intensity on a certain irradiation surface by adjusting the distance between the light-changing lens group and the first lens, and determine the size of the irradiation area, thereby providing a basis for determining the installation position of the light-emitting device on the mounting plate.

[0020] This invention also provides a lens for a bioluminescent device for plants and animals. The lens comprises a first lens, a second lens, and a third lens sequentially along the light emission direction of the light source. The first lens is designed based on a freeform surface, enabling the light spot emitted from the light source to be rectangular. The second lens and the third lens form a variable-light lens group. Preferably, the divergence angle of the light emitted from the light source is changed through continuous refraction by the second lens and the third lens. The variable-light lens group changes the light divergence angle of the bioluminescent device by moving closer to or further away from the first lens along the optical axis of the light source.

[0021] According to a preferred embodiment, the first lens includes an incident freeform surface, a total internal reflection surface, and an exit freeform surface. Light emitted from the light source is transmitted through the incident freeform surface and / or reflected by the total internal reflection surface, then exits from the exit freeform surface to form a rectangular light spot. The exit freeform surface satisfies the following:

[0022] ;

[0023] Where F is the luminous flux incident on the freeform surface, α is the incident angle corresponding to the outgoing ray from the freeform surface, β is the critical value of the angle distribution between the incident freeform surface and the total internal reflection surface, and A is a coefficient.

[0024] According to a preferred embodiment, the variable light lens group changes the distance from the first lens in the direction of the light source optical axis, thereby changing the light divergence angle of the plant and animal light-emitting device and thus changing the light intensity received on the irradiated plane. Attached Figure Description

[0025] Figure 1 This is a simplified schematic diagram of a lighting system employing multiple light-emitting devices according to a preferred embodiment of the present invention;

[0026] Figure 2 This is a simplified schematic diagram of a light-emitting device according to a preferred embodiment of the present invention;

[0027] Figure 3 This is a simplified schematic diagram of the first lens according to a preferred embodiment of the present invention;

[0028] Figure 4 This is a simplified schematic diagram of the first lens and the light source according to a preferred embodiment of the present invention;

[0029] Figure 5 This is a simplified schematic diagram of the variable light lens group when it is close to the first lens and the light source;

[0030] Figure 6 This is a simplified schematic diagram of the variable light lens group when it is far away from the first lens and the light source.

[0031] List of reference numerals

[0032] 100: Light-emitting device; 101: Mounting base; 102: Light source; 103: First lens; 104: Locking block; 105: Second lens; 106: Third lens; 107: Lens barrel; 108: Slider; 109: Drive shaft; 110: Motor; 111: Support; 112: Incident freeform surface; 113: Total internal reflection surface; 114: Outgoing freeform surface; 200: Mounting plate; 300: Display platform. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1 to 6 A detailed explanation follows. The light-emitting device employs a light distribution design based on a light source, with a first lens, a second lens, and a third lens sequentially positioned along the light emission direction of the light source. The light-emitting device generates a rectangular illumination area through the first lens. By changing the distance between the light-changing lens group (composed of the second and third lenses) and the first lens, the divergence angle of the light-emitting device is altered. This allows the light-emitting device to adjust the illuminated area and intensity on the illuminated surface according to the shape of the irradiated object and / or the required light intensity.

[0034] Preferably, when the light intensity required by the illuminated plants and animals changes, the light-emitting device adjusts the distance between the variable light lens group and the first lens, thereby adjusting the light intensity received by the illuminated plants and animals on the platform.

[0035] Example 1

[0036] To address the shortcomings of existing technologies, this invention provides a plant and animal light-emitting device 100. The light-emitting device includes a light source 102 and a first lens 103, a second lens 105, and a third lens 106 arranged sequentially along the light emission direction of the light source 102. The first lens 103 is designed based on a freeform surface, enabling the light spot of the light source 102 to be rectangular. The second lens 105 and the third lens 106 form a variable-light lens group. Preferably, the light emitted from the light source 102 undergoes a change in divergence angle through continuous refraction by the second lens 105 and the third lens 106. The variable-light lens group changes the light divergence angle of the plant and animal light-emitting device 100 by moving closer to or further away from the first lens 103 along the optical axis of the light source 102, thereby changing the light intensity illuminating the platform 300.

[0037] Preferably, the light-emitting device 100 uses the light source 102 for light distribution design. By changing the distance between the variable-light lens group (comprising the second lens 105 and the third lens 106) and the first lens 103, the divergence angle of the light-emitting device 100 is changed. This allows the light-emitting device 100 to adjust the illuminated area and light intensity on the illuminated surface according to the shape of the irradiated object and / or the light intensity requirements. Preferably, when the light intensity required by the illuminated plant or animal changes, the light-emitting device 100 adjusts the distance between the variable-light lens group and the first lens 103 to adjust the light intensity received by the illuminated plant or animal on the display platform.

[0038] Preferably, the light-emitting device 100 generates a rectangular illumination area through the first lens 103. See also Figure 1 Preferably, a number of light-emitting devices 100 are arranged on the mounting plate 200 by overlapping the edges of the rectangular lighting area, forming a larger uniform lighting area. This can eliminate lighting blind spots and avoid the situation where, when traditional lighting equipment provides close-range lighting, the illuminated plants and animals are located outside the lighting area due to the large divergence angle, as well as the uneven distribution of light intensity on the irradiated surface.

[0039] See Figure 2 Preferably, the light-emitting device further includes a mounting base 101 and a transmission mechanism. The light source 102 is disposed on one side of the mounting base 101, and at least two transmission mechanisms are arranged around the light source 102 on the mounting base 101. Two locking blocks 104 mount the first lens 103 in the light-emitting direction of the light source 102. At least two transmission mechanisms are connected to the lens barrel 107 via a configured slider 108, allowing the variable-light lens group to move closer to or further away from the light source 102 along the optical axis, thereby changing the divergence angle of the light beam generated by the light-emitting device. Preferably, the transmission mechanism further includes a drive shaft 109 and a support 111. One end of the support 111 is connected to the mounting base 101, and the other end is connected to the drive shaft 109 passing through the slider 108.

[0040] Preferably, at least one transmission mechanism is equipped with a motor 110. The motor 110 is connected to a transmission shaft 109, so that a slider 108 disposed on the transmission shaft 109 can drive the lens barrel 107 to move along the light emission direction of the plant and animal light-emitting device, thereby changing the distance between the light-changing lens group and the light source 102. Preferably, the motor 110 is a stepper motor. Preferably, the transmission shaft 109 connected to the motor 110 is a threaded shaft that forms a lead screw transmission mechanism with the motor 110. Preferably, the transmission shaft 109 not connected to the motor 110 is a guide bar that forms a guide rail.

[0041] See Figure 3Preferably, the first lens 103 includes an incident freeform surface 112, a total internal reflection surface 113, and an exit freeform surface 114. Light emitted from the light source 102 is transmitted through the incident freeform surface 112 and / or reflected by the total internal reflection surface 113 before exiting from the exit freeform surface 114 to form a rectangular light spot. The exit freeform surface 114 satisfies the following conditions: Where F is the luminous flux of the incident freeform surface 112, α is the incident angle corresponding to the light emitted from the exiting freeform surface 114, β is the critical value of the angle distribution between the incident freeform surface 112 and the total internal reflection surface 113, and A is a coefficient. Preferably, A is 2.5~4. Preferably, β=arctan(d / (hl)); where d is the thickness of the first lens 103, h is the distance from the light source 102 to the first lens 103, and l is the length of the emitting surface of the chip of the light source 102. Preferably, the light sources used in this invention are all multi-chip LED light sources.

[0042] See Figure 4 Preferably, the first lens 103 reflects the light emitted from the light source 102 onto the irradiated surface to form a rectangular illumination spot with uniform light intensity distribution. This facilitates the overlap of the edges of the rectangular illumination area by multiple light-emitting devices 100, thereby forming a larger uniform illumination area. This eliminates blind spots and avoids the situation where, when traditional lighting equipment provides close-range illumination, the illuminated plants and animals are located outside the illumination area due to the large divergence angle, as well as the uneven distribution of light intensity on the irradiated surface.

[0043] Preferably, the second lens 105 and the third lens 106 are meniscus lenses. The second lens 105 and the third lens 106 are assembled in the lens barrel 107 with their optical axes aligned to form a variable light lens group. Preferably, the second lens 105 and the third lens 106 are arranged in order of increasing curvature.

[0044] Preferably, the light-emitting device further includes a mounting base 101 and a transmission mechanism. The light source 102 is disposed on one side of the mounting base 101, and at least two transmission mechanisms are disposed around the light source 102 on the mounting base 101. The at least two transmission mechanisms are connected to the lens barrel 107 via a configured slider 108, so that the light-changing lens group can move closer to or further away from the light source 102 along the optical axis, thereby changing the divergence angle of the light beam generated by the light-emitting device.

[0045] See Figure 5 and Figure 6Preferably, the variable-light lens group changes the size and intensity of the rectangular light spot of the light-emitting device 100 on the irradiated surface by moving closer to or further away from the first lens 103. Preferably, for a single plant, the light-emitting device 100 can adjust the distance between the variable-light lens group and the first lens 103 to change the irradiated area of ​​the plant, adapting to the different light absorption areas of the plant during its growth period. For multiple plants placed on the shelf 300, after the light-emitting device 100 adjusts the distance between the variable-light lens group and the first lens 103, especially when the illumination ranges of multiple light-emitting devices 100 overlap due to the adjustment of the distance between the variable-light lens group and the first lens 103, the plants placed on the shelf 300 can receive multi-angle irradiated light, thereby promoting plant growth.

[0046] Preferably, the plant and animal light-emitting device 100 changes the size of the rectangular light spot on the irradiated surface by altering the distance between the variable-light lens group and the first lens 103. The distance L between the variable-light lens group and the first lens 103 satisfies: Where L1 is the maximum distance between the variable light lens group and the first lens 103, L2 is the minimum distance between the variable light lens group and the first lens 103, B is the light intensity on a certain illumination surface when the variable light lens group and the first lens 103 are at their maximum distance, and E is the required light intensity on that illumination surface.

[0047] Preferably, the light-emitting device 100 can change the light intensity of the light-emitting device 100 on a certain illumination surface by adjusting the distance between the light-changing lens group and the first lens 103, and determine the size of the illumination area, thereby providing a basis for determining the installation position of the light-emitting device 100 on the mounting plate 200.

[0048] This invention uses a multi-chip LED light source and a secondary light distribution technology for the LED light source, which concentrates limited light energy in the crop canopy during the crop growth period, reducing power consumption by 52.1% and increasing light energy utilization by 55.6%.

[0049] Example 2

[0050] This embodiment is a further improvement on Embodiment 1, and repeated content will not be described again. This embodiment provides a lens for a plant and animal light-emitting device 100. The lens includes a first lens 103, a second lens 105, and a third lens 106 sequentially along the light emission direction of the light source 102. The first lens 103 is designed based on a freeform surface, which enables the light spot emitted from the light source 102 to be rectangular. The second lens 105 and the third lens 106 form a variable light lens group. Preferably, the light emitted from the light source 102 is refracted continuously by the second lens 105 and the third lens 106 to change the divergence angle. The variable light lens group changes the light divergence angle of the plant and animal light-emitting device by moving closer to or further away from the first lens 103 along the optical axis of the light source.

[0051] Preferably, the first lens 103 includes an incident freeform surface, a total internal reflection surface, and an exit freeform surface. Light emitted from the light source 102 is transmitted through the incident freeform surface and / or reflected by the total internal reflection surface before exiting from the exit freeform surface to form a rectangular light spot. The exit freeform surface satisfies:

[0052] ;

[0053] Where F is the luminous flux incident on the freeform surface, α is the incident angle corresponding to the outgoing ray from the freeform surface, β is the critical value of the angle distribution between the incident freeform surface and the total internal reflection surface, and A is a coefficient.

[0054] Preferably, the variable light lens group changes the distance between itself and the first lens 103 in the optical axis direction of the light source 101, thereby changing the light divergence angle of the light-emitting device of plants and animals, and thus changing the light intensity received on the irradiated plane.

[0055] Example 3

[0056] This embodiment is a further improvement on Embodiments 1 and 2, and the repeated content will not be described again. This embodiment provides a supplemental lighting system for the plant and animal light-emitting device 100 designed based on Embodiments 1 and 2.

[0057] The supplemental lighting system includes at least a light-emitting device 100, a processing unit, and a light sensor. The light sensor collects the real-time light intensity on the platform 300 and transmits the collected real-time light intensity to the processing unit via wired or wireless means. The processing unit determines, through a preset program, whether the real-time light intensity meets the light intensity required for plant and animal growth, and adjusts the light intensity emitted by the light-emitting device 100 onto the platform 300 based on the determination result.

[0058] Preferably, the processing unit is electrically connected to the motor 110 of the light-emitting device 100. Preferably, the motor 110 is a stepper motor. Preferably, the processing unit is set with a light intensity threshold for the illuminated surface (the illuminated area of ​​the platform 300). The processing unit detects whether the light intensity of the illuminated surface reaches the preset threshold using a light sensor, and adjusts the distance between the light-changing lens group and the first lens 103 to provide supplementary lighting. Preferably, the processing unit is also electrically connected to the control switch of the light source 102 of the light-emitting device 100.

[0059] When the processing unit determines that the instantaneous light intensity is less than the set light intensity threshold, the processing unit sends a light emission signal to the control switch of the light source 102, causing the light source 102 to start emitting light. The processing unit also sends a light-changing signal to the motor 110, which changes the distance L between the light-changing lens group and the first lens 103, thereby adjusting the light intensity received on the stage 300. The distance L between the light-changing lens group and the first lens 103 satisfies: Where L1 is the maximum distance between the variable light lens group and the first lens 103, L2 is the minimum distance between the variable light lens group and the first lens 103, D is the instantaneous light intensity collected by the light sensor on the platform 300, and C is the light intensity threshold set by the processing unit.

[0060] For temperate birds, their gonads mature during the long day season, so extra sunlight in winter can enlarge their gonads and cause physiological activities such as sperm release, ovulation, fertilization, or egg laying. Therefore, poultry farms such as chicken farms often increase production by setting long periods of light.

[0061] Preferably, the supplemental lighting system of this embodiment can be used in chicken farms to provide supplemental lighting in situations where ambient light is weak, thereby promoting chicken growth. Preferably, the processing unit is set with a minimum light threshold to promote chicken growth. Preferably, when the light intensity received by the chickens is less than the minimum light threshold due to external factors such as sunset, darkness, or rain, the processing unit sends a light emission signal to the control switch of the light source 102, causing the light source 102 to start emitting light. The processing unit also sends a light-changing signal to the motor 110, which changes the distance L between the light-changing lens group and the first lens 103, thus maintaining the light intensity received by the chickens within the range that promotes growth.

[0062] Preferably, the supplemental lighting system of this embodiment can also be used in plant factories. The light intensity and photoperiod required for high-energy and low-energy plant responses are different. Light for high-energy responses needs to be alternated with photosynthesis and respiration, while light for low-energy responses needs to be allocated according to the growth cycle and production targets of different plant species. High-energy responses can form light and dark cycles accompanying the periodic activities of the plant's light and dark responses, while low-energy responses do not. Since plant growth requires constant guidance, the low-intensity, multi-wavelength combination light required for low-energy responses needs to be supplied continuously. The continuous output of signal light is also one of the factors influencing the faster growth rate of artificially cultivated plants compared to plants in natural environments. For example, the growth cycle of lettuce in a natural environment is 30-40 days, while in an artificially cultivated environment, the growth cycle of lettuce can be shortened to 20-27 days. Furthermore, in nature, sunlight is a multi-spectral light source, which can provide the signal light and energy light involved in plant growth. Since monochromatic light or combination light is often used in incubators... The wavelengths and proportions of light from these artificial light sources are often designed to meet the needs of dry matter accumulation for plant growth, neglecting the most crucial aspect of plant life – photomorphogenesis. Throughout a plant's growth cycle, light's role in growth includes photosynthesis and signaling. Photosynthesis primarily provides matter and energy, and is known as the high-energy response. Signaling, on the other hand, is involved in plant morphogenesis and is called the low-energy response. Specifically, the main process of the low-energy response is as follows: Light, acting as a signal, shines onto the plant leaves. Photoreceptors on the leaves receive the signal and transduce it. Primary reactions occur within the leaves, and based on the type of photoreceptor receiving the signal, regulatory pathways are selected, selectively promoting the development of a particular plant trait.

[0063] Preferably, without changing the parameters of the light source 102, this embodiment changes the distance between the light-changing lens group and the first lens 103 by the motor 110, so that the illumination area and illumination intensity formed by the light-emitting device 100 on the platform 300 change simultaneously.

[0064] Preferably, the processing unit periodically adjusts the distance between the variable-energy lens group and the first lens 103 based on the light intensity and photoperiod required for the plant's high-energy and low-energy responses. Preferably, when the plant is undergoing a high-energy response, the processing unit sends a signal to bring the variable-energy lens group closer to the first lens 103 to provide the plant with high-intensity light to support photosynthesis. Preferably, when the plant is undergoing a low-energy response, the processing unit sends a signal to move the variable-energy lens group away from the first lens 103 to provide the plant with weaker signal light for the low-energy response.

[0065] Preferably, the light source 110 can be a light-emitting chip with two or more wavelengths of LED beads. Preferably, the light source 110 can also be a light-emitting chip with multiple light intensity levels or stepless dimming function. Preferably, the light-emitting device 100 changes the size of the rectangular light spot on the irradiated surface by changing the distance L between the light-changing lens group and the first lens 103.

[0066] Preferably, as the plant grows, its morphology changes, manifested as increased height, larger leaves, and increased light absorption area. Based on the plant's growth, the illumination range of the light-emitting device 100 on the plant is increased in a timely manner; that is, the illumination area provided by the light-emitting device 100 to the surface of the platform 300 can ensure the plant's light absorption efficiency.

[0067] Preferably, the light sensor is positioned in the shaded area of ​​the plant, such as under the leaves. Preferably, the light sensor can be positioned on the surface of the support 300. Preferably, as the plant grows, the area of ​​the shadow it casts on the surface of the support 300 also increases. The light intensity collected by the light sensor located in the plant's shaded area is significantly lower than the light intensity collected by the light sensor located outside the plant's shaded area. The processing unit determines the size of the plant by analyzing the light intensity collected by several light sensors, thereby determining the optimal size of the illuminated area provided by the light-emitting device 100 to the plant.

[0068] Preferably, the following method is provided:

[0069] Once it is confirmed that the planted object has not appeared, the distance range of the second lens is calculated based on the overall spatial proportion of the plant, and the lens is controlled to be within the range of the second lens.

[0070] Once the presence of the planted object is confirmed, the distance range of the first lens is calculated based on the spatial proportion of the planted object to the overall plant.

[0071] When the planted object is in a high-energy reaction period, the lens is controlled to be within a first portion of the first lens distance range;

[0072] When the planted object is in a low-energy reaction period, the lens is controlled to be within a second portion of the first lens distance range;

[0073] The first portion of the range is complementary to the second portion of the range, and when the lens group is in the state of adjustment by the first portion of the range, the distance between the first lens and the variable lens group is closer than when it is in the state of adjustment by the second portion of the range.

[0074] Based on the same output power, the light intensity received by the first part of the range adjustment is relatively higher and the relatively illuminated area is relatively lower.

[0075] Based on the same output power, the light received by the second part of the range adjustment has a relatively lower relative light intensity and a relatively higher relative illumination area.

[0076] Light intensity refers to the power of light radiation received per unit area of ​​the plant when light actually shines on it.

[0077] Within the distance range of the second lens, the light intensity is lower than that within the distance range of the first lens, while the illuminated area is higher.

[0078] A device or system is also provided, including a plant detection unit for detecting whether a desired portion appears on a plant and the spatial position of the desired portion on the plant. The plant detection unit can be configured as a visual detection component capable of identifying whether the desired portion appears on the plant by image inspection. For example, by comparing a current image with a pre-stored image of an apple, the plant detection unit can determine whether an apple fruit appears on the apple tree in the current image. Based on the known positional relationship between the plant detection unit and the detected plant, the spatial position information of the desired portion can also be obtained. The plant detection unit can also be configured as other single detectors or combinations of multiple detectors, such as a visual plus infrared detection combination, a visual plus three-dimensional scanning detection combination, etc. The plant detection unit itself can have processing capabilities, i.e., it can process the detection data and determine whether the desired portion appears and its corresponding spatial position. Alternatively, it may not have the aforementioned processing capabilities; in this case, a processor can be configured accordingly. The plant detection unit is communicatively coupled to a drive shaft; in another embodiment, the processor is communicatively coupled to the drive shaft. The rotating shaft is configured to rotate under the control of the plant detection unit or the treatment unit, thereby driving the diffusing lens to move and change its distance from the first lens. The adjustment of the diffusing lens and the first lens is performed according to the method described above.

[0079] In existing technologies, plant cultivation typically involves providing sufficient light to the entire plant in the hope that it will maintain good growth. However, in many cases, plant cultivation does not aim to obtain the entire plant, but rather a specific part of it. This part has spatiotemporal characteristics; that is, the desired part may not appear on the plant for a period of time, or it may appear on the plant for a period of time but within a certain spatial range. For example, the fruit of some plants only appears on the plant during the fruiting period, and the fruit only occupies a portion of the total plant area. Growers expect to harvest the fruit. If the traditional method of illuminating the entire plant is still used in this case, the relatively good growth of other undesirable parts of the plant will in turn affect the growth of the desired part. This part represents the growth competition between different parts of the plant. Meanwhile, plant growth can be broadly divided into two periods based on light requirements: the photosynthetic period and the growth regulation period. During photosynthesis, plants require high-intensity light to maintain a high-energy response. During growth regulation, plants require lower-intensity signal light to selectively promote the development of a specific trait, i.e., a low-energy response. Low-energy responses often require growth regulation of several parts of the plant to modify their traits and achieve better plant growth. Existing technologies rarely include lighting regulation schemes and corresponding systems for plants, especially those where the desired part has a proportional relationship with the whole plant, in these two stages. Therefore, a scheme needs to be designed to provide targeted irradiation to the desired parts of the plant, and to adaptively change the irradiation parameters based on the plant's high and low-energy responses. These parameters should include at least the irradiation range and the light intensity, so that the cultivation of the desired part and the signal regulation traits of the entire plant can be optimally balanced.

[0080] The above-described solution allows for the use of a single light source or a very small number of light sources. This enables the installation of a dedicated lighting unit for each high-value plant. Conventional techniques, limited by cost, often prevent the installation of multiple light sources for a single plant, resulting in widespread, high-intensity illumination. This leads to competition between desired and undesirable parts of the plant, reducing planting profits. This invention, however, provides precise, high-energy photosynthetic light for the desired plant's high-energy response using a single, low-cost light source. It also provides low-radiation signal light for the entire plant under low-energy response conditions from a single source, allowing the desired plant to grow optimally while regulating the overall growth characteristics of the plant. Furthermore, the plant detection component can be configured to detect desired parts of multiple plants within a region, eliminating the need for multiple detection units and maintaining a low cost. Based on this, the variable lens solution provided in this plan allows for the selection of fixed-beam LEDs without changing the output power of the light source, thus enabling the conversion of high and low energy light supply to the plant side, further improving the simplicity of the lighting equipment and reducing configuration costs.

[0081] Preferably, the processing unit divides the plant's growth into three intervals based on two thresholds, according to the plant's size from seedling to maturity. Preferably, the three intervals include the seedling stage (preparation stage), the rapid growth stage, and the maturity stage (nutrient accumulation stage). Preferably, the processing unit determines the plant's growth interval by analyzing the light intensity collected by several light sensors, thereby adjusting the distance between the variable light lens group and the first lens 103 to provide the optimal light area to the plant from the light-emitting device 100.

[0082] Preferably, the processing unit can adjust the illumination area formed by the light-emitting device 100 on the surface of the platform 300 by determining the growth range of the plant. Preferably, when the processing unit determines that the plant is in a certain growth range, the processing unit sends a signal to the motor 110 so that the light-emitting device 100 forms the maximum illumination area required by the plant in that growth range on the surface of the platform 300.

[0083] Preferably, the processing unit can continuously adjust the illumination area formed by the light-emitting device 100 on the surface of the platform 300 to ensure that the plant is always in the optimal illumination area. Preferably, while ensuring that the light-absorbing part of the plant is always in the illumination area, the processing unit can periodically adjust the distance L between the light-changing lens group and the first lens 103 to change the illumination area formed by the light-emitting device 100 on the surface of the platform 300.

[0084] Preferably, while sending a signal to the motor 110 to adjust the illumination area formed by the light-emitting device 100 on the surface of the platform 300, the processing unit also sends a control command to the control switch of the light source 102 to adjust the emission wavelength, intensity and other parameters of the light source 102, thereby adapting to different growth stages of the plant.

[0085] The distance L between the variable-angle lens group and the first lens 103 satisfies: Wherein, L1 is the maximum distance between the light-emitting device 100 and the first lens 103 when the illumination area on the surface of the platform 300 is at its maximum; L2 is the minimum distance between the light-emitting device 100 and the first lens 103 when the illumination area on the surface of the platform 300 is at its minimum; and E is the mapping relationship between the range of distance variation between the light-emitting device 100 and the first lens 103 established based on the distance between the light-emitting device 100 and the surface of the platform 300 and the range of illumination area variation provided by the light-emitting device 100 to the surface of the platform 300.

[0086] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this invention is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time. This specification contains multiple inventive concepts. Phrases such as "preferred," "according to a preferred embodiment," or "optionally" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept.

Claims

1. A supplemental lighting system with a plant luminescent device, characterized in that, The supplemental lighting system includes a light-emitting device, a processing unit, a light sensor, and a plant detection unit. The light-emitting device is used to illuminate the table, and includes a light source and a first lens, a second lens and a third lens arranged sequentially along the light-emitting direction of the light source; The first lens is based on a freeform surface, which makes the light spot of the light source rectangular; The second and third lenses form a variable light lens group. By moving closer to or further away from the first lens along the optical axis of the light source, the light divergence angle of the plant light-emitting device is changed, thereby changing the light intensity of the light emitting device illuminating the table. The second and third lenses are assembled in the lens tube in a manner that aligns the optical axis to form a variable light lens group. The plant light-emitting device changes the size of the rectangular light spot on the irradiated surface by changing the distance between the variable light lens group and the first lens. The light sensor is placed in the shaded area of ​​the plant to collect the real-time light intensity on the stand. The plant detection unit is used to detect whether the desired part appears on the plant and the spatial location of the desired part on the plant. The processing unit is connected to the light-emitting device, the light sensor, and the plant detection unit, and is configured to perform the following operations: The system receives real-time light intensity and determines whether it meets the light intensity requirements for plant growth through a preset program, and adjusts the light intensity of the light-emitting device based on the determination result; it analyzes the light intensity collected by several light sensors to determine the size of the plant, thereby determining the optimal light area size provided by the light-emitting device to the plant; based on the light intensity and photoperiod required for the plant's high-energy and low-energy responses, it periodically sets the distance between the variable-light lens group and the first lens; without changing the light source parameters, by changing the distance between the variable-light lens group and the first lens, the light area and light intensity formed by the light-emitting device on the platform are changed simultaneously. When the plant detection department confirms that the planted object has not appeared, it calculates the distance range of the second lens based on the spatial proportion of the overall plant and controls the lens within the distance range of the second lens. When the plant detection department confirms that the planted object has appeared, it calculates the distance range of the first lens based on the spatial proportion relationship between the planted object and the overall plant. When the planted object is in a high-energy reaction period, it controls the lens within the first part of the distance range of the first lens. When the planted object is in a low-energy reaction period, it controls the lens within the second part of the distance range of the first lens. The first part and the second part are complementary.

2. The supplementary lighting system according to claim 1, characterized in that, The first lens (103) includes an incident freeform surface (112), a total reflection surface (113), and an exit freeform surface (114). The light emitted by the light source (102) is transmitted through the incident freeform surface (112) and / or reflected by the total internal reflection surface (113) and then emitted from the exit freeform surface (114) to form a rectangular light spot; The outgoing free surface (114) satisfies: ； Where F is the luminous flux of the incident freeform surface (112), α is the incident angle corresponding to the outgoing freeform surface (114), β is the critical value of the angle between the incident freeform surface (112) and the total reflection surface (113), and A is a coefficient.

3. The supplementary lighting system according to claim 1, characterized in that, The second lens (105) and the third lens (106) are meniscus lenses, wherein the second lens (105) and the third lens (106) are arranged in order of increasing curvature.

4. The supplementary lighting system according to claim 3, characterized in that, The light-emitting device also includes a mounting base (101) and a transmission mechanism; The light source (102) is disposed on one side of the mounting base (101), and at least two of the transmission mechanisms are disposed around the light source (102) on the mounting base (101); At least two of the transmission mechanisms are connected to the lens barrel (107) via configured sliders (108), so that the variable light lens group can move closer to or further away from the light source (102) along the optical axis, thereby changing the divergence angle of the light beam generated by the light-emitting device.

5. The supplementary lighting system according to claim 4, characterized in that, The transmission mechanism also includes a transmission shaft (109) and a support (111). One end of the support (111) is connected to the mounting base (101), and the other end is connected to the drive shaft (109) that passes through the slider (108).

6. The supplementary lighting system according to claim 5, characterized in that, At least one of the transmission mechanisms is equipped with a motor (110). The motor (110) is connected to the drive shaft (109), so that the slider (108) set on the drive shaft (109) can drive the lens barrel (107) to move along the light emission direction of the plant light-emitting device, thereby changing the distance between the light-changing lens group and the light source (102).

7. The supplemental lighting system according to claim 1, characterized in that, The distance L between the variable-angle lens group and the first lens (103) satisfies: ； Wherein, L1 is the maximum distance between the variable light lens group and the first lens (103), L2 is the minimum distance between the variable light lens group and the first lens (103), B is the light intensity on a certain irradiation surface when the variable light lens group and the first lens (103) are at their maximum distance, and E is the light intensity required on the irradiation surface.

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