As soon as soon as one kind of LED illumination installment, it is including a LED photo source, a reflection covers, obstructs the piece as well as projects the lens, this LED photo source contains has at least a LED part, light-emitting area of this at least LED part faces this reflection cover, this reflection cover, is the cover supposes in this at least LED outside the part, and contains plural number of reflecting surface each different curvature, should obstruct the piece for optical fiber of adjustment from this plural number reflecting surface gathering will be a preinstall light shape, this projection lens for project outward this preinstall light shape, take advantage of this invention to be possible to avoid the energy of light dropout achieving the energy conservation and the environmental protection goal.