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Twilight Group COB LED Technology

Twilight Group Co., Ltd is the first manufacturer to use the 11 kinds of Spectrums COB led technology in the led grow lights, to get the best performance in the plant growing.


Why COB? --Background :


LED(light emitting diode) is new technology with advantage of saving energy and very long lifespan. But all LED lightsource can not be faultless especially SMD, HP, flux LED etc. Compare to traditional lighting such as fluorescent lamp, as it is super bright in a small size, it cause uncomfortable glare. In case of no diffused optical lens used, such LEDs usually cause glare and zebra strips . But when optical lens or cover used, it will cause light loss when LED beam pass through this lens or cover.


How COB LED Light source works :


COB LED is multi chips packaged, it can 10 times more increase lighting area, so it avoid uncomfortable glare by the maximum extent.     Lightspot use small size of chips to make COB LED package.    By now, for small size chip, ?some famous LED chip manufacturer can reach 249lm/watt @ 20mA. But big size LED chip can only reach 161lm/watt @350mA. The light efficacy decrease when chip size is bigger. Also when LED driver increase current to LED, the light efficacy per watt is even low.   The COB led grow lights will be a trend of LED light source package.




 Comparison of different COB chips