红外菲涅尔透镜容易成型,0.015英寸(0.457毫米)厚,乳白色塑料。这种产品的优点是:8-14μm 范围内最少吸收损失,特别是它们有一致的薄、厚度,大孔径和最小的热膨胀。红外传输菲涅尔透镜的设计包含许多复杂的构思。菲涅尔透镜的槽面将面对长久变化(远离探测器为的是聚集辐射能),对于非光学来说,平滑面将对应长久变化,镜头最大孔径将是1.0。既然这样,全反射会保存来自像面通过F1.0区域的全部辐射。即使当槽口面对长久变化,通过镜头F1.0 的这部分贡献减少而通过F0.5的没意义。

技术信息

Durability Specifications
Effect of SunlightNone to Slight
Effect of UltravioletUV Stabilized
Effect of Weak AcidsVery Little
Effect of Strong AcidsAttacked by Oxidizing Acids
Effect of Weak AlkaliesVery Little
Effect of Strong AlkaliesVery Little
Effect of Organic SolventsLittle below 60°C (140°F)