78mm glass 90 degree led lenses for LED grow light

Model KL-HB78-90 Beam angle 90degree,by adjusting the distance of the LED and lens or cooperate with reflector can get 30~90degree Suitable Led Power 10w-100w COB led, using led light-emitting area within 52mm Material Made of high borosilicate glass3.3 reflective index:1.474 Never get yellow comparing with PMMA /PC material A low inflation rate, high temperature resistant Light Transmittance 94% ,after coating it can reach 99%     Working Temp -50~+550℃ Color excellent transparency Certificates ISO9001/RoHS/SGS Accessories with metal holder & silicon gasket, easy installation.