Quantum Dot Light Emitting Device for Variable Plant Growth Wavelengths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current light emitting devices for plant growth, such as LED lamps, are limited in their ability to provide variable wavelengths similar to natural light, leading to inefficient photosynthesis and chlorophyll activation, and are often costly and difficult to use in general farm households.
Innovation Solution
A light emitting device using quantum dots arranged in multiple regions with specific wavelengths, controlled by a driving unit and a control unit to adjust the outputted wavelength based on the growth phase and species of plants, allowing for customizable light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED lamps with fixed light-emitting substances are used, then the device structure is simple and cost is low, but the wavelength range is limited and cannot provide variable wavelengths for different plant growth phases
Solution Approach 1:
The patent introduces quantum dots as an intermediary substance between the LED light source and the plants. The quantum dots convert the LED's emitted light into multiple specific wavelengths (red, blue, far-red) that are optimal for different plant growth phases. This mediator enables wavelength variability without requiring multiple LED types, thus resolving the contradiction between adaptability and device complexity
Solution Approach 2:
The patent changes the optical parameters of the light emission by using quantum dots with different size parameters. By controlling the size of quantum dots, the emission wavelength can be precisely tuned to match different plant growth requirements. This parameter change approach allows a single LED type to provide variable wavelengths, avoiding the complexity of using multiple LED types
2Adaptability or versatility
If multiple types of LEDs are arranged on a board to provide various wavelengths, then the wavelength coverage is improved, but the control system becomes complex and difficult to use in general farm households
Solution Approach 1:
The quantum dots serve as a simplified intermediary that converts a single LED's output into multiple growth-optimal wavelengths. This eliminates the need for complex multi-LED arrangements and their associated control systems, making the device easy to operate while maintaining comprehensive wavelength coverage for different plant growth phases
Solution Approach 2:
The patent uses a simple, cost-effective quantum dot layer that can be easily replaced or adjusted, rather than complex electronic control systems for multiple LEDs. This approach reduces operational complexity and makes the system more accessible to general farm households
3Adaptability or versatility
If inorganic fluorescent bodies are used to simulate natural light, then the light emission covers multiple wavelengths, but the light emission efficiency is low and color rendering index is poor
Solution Approach 1:
The patent uses composite quantum dot materials with precisely controlled sizes and compositions to achieve high-efficiency wavelength conversion. Unlike inorganic fluorescent bodies, these composite quantum dot structures minimize energy loss while providing the full spectrum of wavelengths needed for plant growth, thus resolving the contradiction between spectral range and energy efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device optimizes plant growth by providing the necessary wavelengths for different growth phases and species, improving plant quality and productivity while being more cost-effective and user-friendly.
Implementation Method 1
quantum dots emit light of a predetermined wavelength in correspondence to each of, each column of, or each row of light sources
Data Source
Figure 1~2
Figure 3~4a
Figure 4b
AI summary
The present invention relates to a light emitting device for plant growth with variable wavelengths using quantum dots and, more particularly, to a light emitting device for plant growth with a variable wavelength using quantum dots, which optimizes the growth of plants through a light source having a variable wavelength and improves the quality of the plants, by irradiating a light source onto a sheet on which a plurality of quantum dots are arranged and controlling the light source so as to have the necessary wavelengths for the respective growth phases of plants and the kinds of plants.