A: TIR(Total Internal Reflection) Lenses, the most common design With the forementioned concept, the secondary optics is another layer of architect to help to form a much more purposed light beam angle, which usually being categorized as 3 different types:Ĭat. So, primary optics area ideal for even canopy coverage since they spread the light out wider than a narrower beam angle. Get more information about Lumo-X LightCloudTM series LED grow light here. Lumo-X LightCloud TM series is under this typical modern design which meet the recent days concept by using more than 2400pcs low power LED diodes in total to reach a very high PPF to meet the target of both a very even light distribution and high intensity at 1000 umol/s2 level at 12inch height. The recent big name is Samsung 301B/H chips which the wattage could go down as low as 0.25W of each diode. But in recent days, the trend has been changed by using large amount of low wattage LED diodes on multiple light bars (Fluence Bioengineering SPYDR Series) or panel (Quantum Board) instead. Talk about the LED grow light, in the past, some LED grow light companies only use primary optics but high-wattage diodes, 5 watts or even higher for example, to hold the intensity. It is such an important concept that you have to know when you plan your lights distribution for an evenly light coverage, either in the greenhouse, grow room, Lumo-X emerald or black diamond series grow tents. So, this is the nature of LED primary optics. That why you need a PPFD map to plan your grow room.įor more about PPFD and PPFD map, click (links) here For example, if we use a CRIC (Common Relative Intensity Curve) to explain the Lumo-X XC series grow light, we can see that the intensity at 75° is about 50% of the original intensity, and 100% at the angle range between 0~5°. Then, even though LED grow light distribution is at a specific angle, let’s say 120°, but it does not mean that the light will be at equally intense at all viewing angles. Read more about LED beam angle here (Links) Too wide of an angle reduces the intensity over distance, while too narrow of an angle can reduce coverage area. 90° is a common beam angle on LED grow lights, but some companies may use wider angles. The shape of primary optic functioning as a protective coating and determines the light beam angle which emitted from the diode.įirstly, LED grow light companies will select different angles for their products in different growing scenarios. This layer of coating is called PRIMARY OPTIC. LED chip, sometimes people call it diode, is coated with silicon during the manufacturing process. Here today, we introduce more details about LED optics which helps to shape the light beam angle. It’s a combination to form the light characteristics for different use case, especially in grow light world. Light intensity is related with 3 factors, all about light power, angle and height.
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