They are divided into 2 types: "patch" and "plug-in". The plug-in type has good directionality and is suitable for the working distance. By increasing the brightness, the SMD type can also achieve a good image and a better price/performance ratio. High power strip lighting can also be used at higher working distances by adding a lens. Strip lighting can also be used in combination to illuminate large circular or square objects. Clear images can be obtained regardless of whether the light is directed or oblique to the object.