LED plant grow lights have obvious advantages in the following 3 areas:
1. Better Luminophores Luminophores used to be one of the main reasons that hindered the development of the plant light market, until the recent introduction of LED lamp beads that can provide the wavelengths required for plant photosynthesis (especially at 660nm) to meet the market demand Nanometre is the unit of measurement of the energy of light, which represents the magnitude of a certain wavelength at each point. 660nm beads emit red light at the tail end of the red spectrum, which is essential for plant photosynthesis. It's funny how many suppliers claim they were the first to start using the real 660nm. At that time, LED plant grow lights were really lacking in the intensity that would allow plants to grow. Now, a few years later, the wattage is higher and the broader spectrum of beads are led plant lights have entered a new era. Compared to the previous plant lights, the new generation of plant lights have a very big improvement in spectrum and intensity.
2. secondary optical lens The second huge breakthrough of led plant grow lights is the optical lens . Plastic light gathering lenses are placed on top of the LED beads to enhance the intensity of the light,pollen trim tray while also greatly improving the penetration and distribution of the light. Many organisations are still working on optical lenses and look forward to more innovations.
Increasing Electricity Costs High electricity costs are also a major incentive for growers to switch to more energy efficient LED grow lights. In southern California, our electric company SCE has announced that they will be increasing their rates every year for the next few years. A 1,000-watt HID light that operates 12 hours a day during bloom uses 4.3 million kWh of electricity a year, or $1,500 a year at SCE's current top rate of $0.36 per kWh. And this does not include the electricity used to maintain the ambient temperature such as air conditioning fans.LED plant grow lights are able to halve the electricity bill.
Advantages of Dimmable LED Plant Grow Lights
There are now plant lights that have an adjustable spectrum, where the user is able to turn the red and blue light on and off individually with a few separate knobs. There are some growers who believe that this is just not necessary, but there are some growers who believe that reducing the red light is a way to make the nodes on the plant stems smaller in distance. After years of trial and testing, growers have concluded that the best way to make plant plants shorter is to hang the fixtures lower, necessitating that the plants try to get to the lights that are hung very high.
For LED plant grow lights, dimmable light has a distinct advantage. The risk of adjusting the spectrum of the LED is far less than the benefit to the plant of adjusting the right spectrum.LED plant grow lights may have more knobs or even the ability to control each type of light. Enabling growers to tune the best, most suitable spectrum for their plants. These adjustable LED plant lights are likely to unveil the ratio of spectral blends needed for each plant, which in turn will drive the development of LED plant lights to produce grow lights for a variety of plants. Additionally commercial growers who grow a wide variety of plants can benefit from this as they can find a specific fixture that is suitable for their particular plant.
Total Cost of Buying a LED Grow Light: Consider what the LED grow light reduces for you. An LED plant grow light can be three times or more expensive than an HID depending on the features. However, this initial investment can be offset by lower care and electricity costs later on, and the payback time for LED grow lights is actually much shorter than for HIDs. This is because when using LED grow lights, a lot of the equipment that is necessary when using HID can be reduced or eliminated. These reduced electricity costs are even more than the electricity costs saved by LED grow lights.
About LED Grow Light Features
LED stands for Light Emitting Diode, and the difference between LED and HID is that LEDs emit light with semiconductors, while HIDs emit light through a heat-generating, light-emitting plasma gas. When the current passes through the LED, the crystal in the centre of the lamp bead emits different colours of light depending on the material used. This crystal is surrounded by a reflector, above the reflector is an epoxy lens, and they are sealed by an epoxy housing.
LED grow lights are made up of LED beads, heat sinks, fans, power supplies and housings. The single bead is in contact with the heat sink which, along with the fan, conducts the heat emitted by the LEDs.The LED power supply, similar to that used for HIDs, provides electricity to the LEDs. The newer generation of LED plant grow lights will use optical lenses for the effect of concentrating light and boosting the intensity of the light.
LED plant grow lights have opened up a whole new world for indoor growers. Now we are able to control the wavelengths that the plants are actually receiving, rather than adjusting our grows to the wavelengths that are effective in the marketplace. We can make different led plant lights for different plants.The characteristics of LED plant grow lights, especially its low heat,weed trimming tray pave the way for large scale growing.
Low heat is a feature that LED plant grow lights can take advantage of. As we did discuss before, LED plant grow lights produce very little heat. Of course heat is a complicated topic, so let's leave it to the physicists. What we need to know is what happens when we turn the light off. The light quanta are no longer there, so where do they go? Physicists tell us that they disappear into the whole system, and that system means our whole production room. This is what we know as the law of conservation of energy. Energy can be transformed but it doesn't disappear. It's hard to say at what point the light fades, but eventually it becomes heat. Theoretically 1W equals 3.412 BTUs of heat. This equation applies to any light fixture, HID, fluorescent, LED grow lights and others. How is this really true then why do LED plant lights produce less heat? The reason is simple, when people use LED plant lights they use up to 40%-50% lower wattage than HID. Lower wattage means less heat.
Note: Infrared heaters work by heating up a surface, which then causes the ambient temperature to rise. This is the opposite of a conventional heater, which heats the ambient temperature and then causes the surface of the object to rise in temperature. Inside your garden, these so-called object surfaces refer to the trunks and leaves of your plants.
Another reason why LED plant grow lights produce less heat is that the infrared inside HID , HPS produces a lot of useless heat. The principle that infrared can warm up the surface of an object has been used in everyday life for many years, for example, infrared is used in bathrooms to keep them warm and in hotels to keep food warm. Recently infrared microwave ovens and barbecues have also become available. Infrared does nothing other than raise the temperature around your plants. If the lamp manufacturers published their spectral distribution maps and their spectra contained infrared within them, we could easily understand why their lamps heat up so much. If the distribution chart of the spectrum can show wavelengths higher than 900nm, we can compare the heat produced by led plant grow lights with different light sources.
Introduction of LED Plant Grow Lights and Spectrum
LED plant grow light can be set according to the customer's demand for wavelength and according to the various types of plant growth conditions and needs of the special order, and the plant light wavelength type is rich, can be adjusted to a greater extent, according to the preferences of various types of plants through the adjustment of the light configuration of different led plant light, suitable for a variety of plant lighting. Plant photosynthesis of light is not to look at the colour temperature and lumens.
Blue light is able to promote the growth of green leaves; red light is helpful for flowering and prolonging the flowering period! A comparison of seedlings with 3 different types of lighting shows that the seedlings with the red LED plant grow light will grow slower than the other two, and will be very small overall.
Seedlings illuminated with blue LEDs have fewer leaves and are elongated. Seedlings illuminated with pink LEDs have larger leaves and the overall growth of the plant is well balanced. The wavelengths of light affecting the growth of different types of plants are more or less the same. In the future, we will need to conduct experiments, including adjusting the irradiation time, at agricultural test sites.
When using led plant growth lights to replenish light to plants, the general distance from the height of about 0.5 metres from the leaves, continuous irradiation for 10 hours a day can completely replace the sun. The effect is very significant, the growth rate is 3 times faster than the general natural growth of plants, to solve the winter lack of sunlight exposure of the distress, to promote plant photosynthesis in the chlorophyll and anthocyanins and carotene, so that fruits and vegetables can be harvested 20% earlier, an increase of 3 to 5% of the yield, and more able to improve the sweetness of fruits and vegetables.
Spectral range affects plant physiology at 280 ~ 315nm –> minimal effect on morphology and physiological processes at 315 ~ 400nm –> less chlorophyll absorption, affecting photoperiodic effects and preventing stem elongation 400 ~ 520nm (blue) –> less chlorophyll absorption, preventing stem elongation 520nm (blue) –> largest ratio of chlorophyll to carotenoid uptake, greatest effect on photosynthesis 520 ~ 610nm (green) –> little pigment uptake 610 ~ 720nm (red) –> low chlorophyll uptake, with a 720 ~ 1000nm –> low absorption rate, stimulate plant cell prolongation, affect flowering and seed germination ＞1000nm –> converted to heat From the above data, it is clear that different wavelengths of light have different effects on plant photosynthesis, and plant photosynthesis is not the same. From the above data, it can be seen that different wavelengths of light have different effects on plant photosynthesis. The wavelengths of light required for plant photosynthesis range from 400 to 720 nm, with light from 400 to 520 nm (blue) and 610 to 720 nm (red) contributing the most to photosynthesis. The light of 520 ~ 610nm (green) has a very low absorption rate by plant pigments.
According to the above principle, led plant grow light is made into red and blue phase combination and all blue and all red three forms, in order to provide red and blue two wavelengths of light, covering the range of wavelengths needed for photosynthesis. In the visual effect, the red and blue combination of plant lights appear pink. White LED lamps, on the other hand, most commonly use blue LED particles to excite a yellow phosphor, which is compounded to create the visual effect of white light. In terms of energy distribution, there are two peaks in the blue region at 445nm and the yellow-green region at 550nm. The red light of 610 to 720nm, which is required by plants, is in short supply.
This explains why white LED illumination is unfavourable for plant growth. The red and blue chromatographic ratio of the plant light is generally between 5:1 ~ 10:1 is appropriate, usually can choose 7 ~ 9:1 ratio. When using led plant lights to illuminate plants, the general distance from the height of the leaves is about 0.3-0.5 metres.
