Our device consists of two birefringence plates and a half wave plate.On the front and back surfaces of the OLPF, an antireflection film and an infrared cutting film arc plated.

• 其主要由2片双折射晶体平板和1片波片构成三明治结构，并在前、后表面分别镀上红外截止膜和增透膜。