Design and preparation of double film systems on PC lens for optical display

Lens of optical monitor can form high reflection in specific wavelength band by coating film. This article uses PC lens as substrate to coat high reflection film and anti-reflection film by using vacuum coating technique. The effects of anti-reflection film on eliminating secondary reflection of PC lens surface were researched. The results showed that the highest reflectivity at the wavelength of 530 nm was 85.5% if anti-reflection film was only coated on the front surface which decreased to 78.33% when high reflection film and anti-reflection film were coated at the same time. The reflectivity of PC lens was reduced by 6.72%.