If you are a grower who uses LED plant lights, then you must know the latest development of LED plant growth light technology --- full-spectrum COB LED plant lights. This is the latest and greatest plant light in the current LED plant light design technology, but what exactly is it? Why is the full-spectrum COB LED grow light so popular?
What is COB LED plant growth light?
Surface mount diode LEDs have always been the technology of choice for LED plant growth lights. This technique (commonly referred to as SMD) involves a single diode that is individually mounted to the surface. They may be installed close together, but they always work as several independent light sources.
COB technology-short for "chip-on-board"-promotes uniform light spread, creates uniform light sources, and reduces costs. COB LED plant growth lights are constructed by mounting many micro LEDs directly on very close substrates. Together, these tiny diodes form a single module—a uniform light source that basically operates as a large LED chip. COB LED grow lights usually emit light in all directions (180 degrees) instead of the specific narrow angle typical of SMD LED grow lights.
Unlike SMD LEDs where each diode has a specific spectrum, COB LEDs are initially blue LED diodes. Then apply a phosphor coating on the yellow-looking blue LED. There is no such thing as white LEDs-they all start with blue LEDs and then apply a phosphorescent coating to emit a white spectrum. They also use a phosphorescent coating to emit white light.
The color temperature of light can be adjusted by adjusting the phosphor mixture. It is possible to shift the spectrum more toward the red or blue spectrum, but this will be a fixed spectrum and will not change. There is also a limit to the distance you can push the phosphor to red or blue. Allows variable spectrum to be implemented in a single luminaire-to provide the best spectrum for your plants.
What are the advantages of COB LED grow lights compared with SMD LED grow lights?
From the above, we know that a very important advantage of COB LED plant lights is the increase in concentrated light energy. The efficiency of SMD LED grow lights is much higher than that of HID similar products. The structure of COB LED grow lights allows a single driver to power multiple chips, resulting in more light output per square inch. COB LED plant lights also generate less heat, and SMD LEDs are not suitable for small spaces at higher power levels.
The optical density increases significantly because there are more diodes in a narrow space. And because these many diodes act as a large LED chip, they generate greater light intensity and can penetrate deeper into the tree canopy. COB technology also has a higher color rendering index, allowing growers to more easily identify discoloration that may indicate fungal attack, light burns, or any other threats to plant health.
The full-spectrum COB LED plant light has been carefully designed to provide the complete visible light spectrum required by plants for biological processes. Your plant needs different wavelengths of light throughout its growth cycle, because each color spectrum sends a signal to the plant to perform different functions related to growth and development. Blue light promotes root development and robust growth, and red light encourages budding and promotes high yield during the flowering period.
The main limitation of COB LED plant lights is that they are a fixed spectrum. It is impossible to change the spectrum combination like using traditional SMD LED plant lights. The spectrum of COB LED plant lights is formulated by mixing a customized phosphor mixture that is used as a coating for COB LEDs. This phosphor mixture then emits light. The spectrum can be changed slightly by changing the phosphor mixture-but this will be fixed on the spectrum. Traditional SMD LED plant lights can be mixed to obtain a specific spectrum, and they can be changed by increasing or dimming different colors.
COB LED Plant Light---Future Technology Trend
Although chip-on-board technology is still fairly new in the world of plant growth lights, this innovative lighting method is already in operation. When you research the options of plant grow lights, you may notice that COB LED grow lights are becoming more and more popular. Use high-quality COB LED technology to ensure full power and highest efficiency. They also use new direct communication technology, which greatly reduces the cost of LED plant lights.
COB LED plant light supplement light skills
1. Illumination distance
The light distance of COB LED plant lights is very important. You need to adjust the points for different plants at different stages, and you must also unify the distance to make the light even more uniform. If the distance is not well controlled, it may harm the growth of plants. . The general recommendation is that the germination stage distance: 60 cm, the seedling stage distance: 75 cm, the growth stage distance: 45 cm, and the flowering stage distance: 30 cm.
2. Lighting time
The lighting time of COB LED plant lights is mainly determined according to plants, and is divided into two types, positive plants and negative plants. Positive plants are more light-loving, and the lighting time can be longer when supplementing the light, usually 18/6 (on/off) or 20/4 (on/off). For negative plants, the lighting time is normal, usually 12/12 (on/off).
3. Dimming level
COB LED plant lights change the phosphor mixture dimming to make plants grow better at each stage, the general germination rate: 30%; seedlings: 50%-75%; growth: 75%-100%; flowering: 100%. Give plants the best growth status.
Now the technology of LED grow lights is more and more perfect, and LED grow lights realize intelligent control. Shenzhen Yaorong Technology Co., Ltd. is an enterprise that specializes in high-end LED plant light products. It can independently develop and customize the spectrum required for the growth of a variety of plants. The styles of LED grow lights are also relatively new, and the 12-year accumulation is sufficient to ensure the quality of the products.
