但随着LED晶片及LED封装技术的快速发展，PC透镜在紫外线照射、高温环境下易黄化、造成的光衰已经远远超过LED光源，抗腐蚀能力差，材料硬度低，表面易被风沙刮伤，易静电吸附空气中灰尘，透镜的出光率逐渐下降等缺陷，被更多专业制造商与终端使用者所注意。

而另一方面，玻璃透镜的耐温范围宽、抗紫外线、抗腐蚀能力强、表面光洁度高等优点，已被更多的行业专家、制造企业、终端使用者所认可，并认为未来户外照明领域的产品将会越来越多的使用玻璃材质的透镜。

A New Technological Engine: "COB + Glass Lens" Paving the Way for the Future of LED Road Lighting
With the rapid development of LED chip and LED packaging technology, the limitations of PC lenses in road lighting have become increasingly apparent. Under ultraviolet radiation and high-temperature environments, PC lenses are prone to yellowing, causing light attenuation that far exceeds the degradation of LED light sources. Additionally, PC lenses have poor resistance to corrosion, low material hardness, susceptibility to scratches from windblown sand, and static attraction of airborne dust, all of which lead to a gradual decline in light output efficiency. These defects have drawn the attention of professional manufacturers and end-users alike.
On the other hand, glass lenses offer several advantages, including a wide temperature tolerance range, strong resistance to UV radiation and corrosion, and a high level of surface smoothness. These benefits have been increasingly recognized by industry experts, manufacturing enterprises, and end-users. Glass lenses are now seen as the material of choice for future products in the outdoor lighting sector, with their adoption expected to grow steadily in this field.