大功率LED，一般指大于0.65W，这一点不同公司内部也会有不同的标准，因为目前在大功率LED领域还没有形成大家一致认可的行业标准。光强与流明比小功率大，但同样散热也很大，现在大功率大多是单颗应用，加上有效散热面积很大的散热片，也出现了集成在一起的LED灯矩阵，但是散热效果不是很好。小功率一般是0.06W左右的。现在LED手电一般是用小功率用的，光散不散，取决于LED的发光角度，有大角度小角度之分，小角度不散，大角度才散。市面上的手电筒一般是用草帽头做的。效果很好。现在就担心有些厂家不重质量，拿的次品LED做电筒，用不了多久就有死灯。-Power LED, generally refers to greater than 0.65W, this house will have different standards, consistent with recognized industry standards in the field of high power LED not yet formed. Light intensity and lumen than the low-power, but the same heat is also a great, and now power most single applications, coupled with effective cooling area a lot of heat sink, also appeared in the integrated LED lamp matrix, but the cooling effect not very good. Low-power is about 0.06W. The LED flashlight is generally with a small power, and scattered light lingers, depending on the LED light angle, large angle and small-angle points, small-angle ghost, only scattered large angle. Flashlight on the market with hat head. Good results. Now worried that some manufacturers are not quality, take the defective LED as flashlight, and will not be long before there dead lights.