downlight lenses no color drift

{"cid":"91222674","title":"No Color Drift PMMA LED Lens with 50 Degree Downlight and 93% Efficiency for RGBW Mixing","imgUrl":"https:\/\/img.chinax.com\/nimg\/52\/bb\/0d49d951aaee298eb53ceb524a6e-200x200-1.jpg","attrs":{"Price":"Shenzhen Wisertop Technology Co.,Ltd","Brand Name":"Wisertop","Model Number":"WT-45@20-M55OBL6-C2","Minimum Order Quantity":"1pc","Delivery Time":"1-2 weeks","Certification":"Rohs","Place of Origin":"China","Supply Ability":"100,000 day","Packaging Details":"Master carton","Material":"PMMA","Lens type":"TIR Lens","Efficiency":"93%","Certificates":"Rohs","Working temperature":"-40\u00b0C~+90\u00b0C","Light source":"Brand COB leds as Cree Osram Lumileds Bridgelux..."}}