Due to their complex nature and diverse end-use applications, thin film optical filters have always been a challenge to specify. This paper defines the major types of filters and offers guidelines on how to specify key attributes, while also optimizing the cost.

Alluxa introduces a new line of ultra-flat dichroic and polychroic high performance thin film filters that feature a flatness of <0.1wave RMS without the need for backside compensation.

Thin film optical filters with ultra-narrow bandwidth, high transmission and flat spectral profiles improve optical system performance for a variety of applications such as LIDAR, laser cleanup, and instrumentation.

Alluxa offers a new line of high performance optical filters designed to improve fluorescence detection systems by offering improvements in throughput, blocking, wavefront accuracy and manufacturing repeatability, all at competitive price points.

Alluxa’s proprietary high speed plasma deposition technology delivers, for the first time, the optical performance and durability of hard coated thin film optical filters at laminated soft coating pricing.

Thin film optical filter technology has advanced to the point where the spectral slopes and blocking levels are challenging even the best metrology equipment and techniques.