HOW UNCOOLED LWIR LENSES CAN SAVE YOU TIME, STRESS, AND MONEY.

The freeform surface may help to reduce the incident angle and exit angle of marginal ray to much more correctly harmony one other aberrations. Herein, the primary objective should be to confirm that a much better performance is going to be realized with using a freeform lens within a refractive IR optical process as compared with an aspheric lens.