Next-generation thin-film optical filters enhance excitation and emission in fluorescence imaging and detection systems. Fluorescence based systems have revolutionized the way organisms, cells, and biomolecules are visualized and detected. However, challenges that are common in these instruments, such as bleedthrough, background autofluorescence, and poor signal-to-noise ratios (S/N), can reduce performance and lead to frustration. Fortunately, performance and signal quality can be greatly improved by integrating next-generation thin-film optical filters into fluorescence based instruments. Because proper optical filtering boosts throughput and
Sophisticated monitor and deposition methods enable multi-cavity narrowband filters that push the envelope of performance. Hard coated ultra-narrowband optical filters made using modern plasma processes offer much improved transmission, temperature stability and out of band blocking as compared to legacy soft coatings. These filters are used in optical systems as diverse as LIDAR (light detection and ranging), Doppler shift detection of plasma velocity, laser cleanup, chemical and gas sensing, as well as for cutting-edge astronomy and instrumentation applications. Ultra-narrowband filters
In today’s iris image capture technology, the limitation of Depth-of-Field is the main problem for traditional iris recognition systems. Reducing the aperture can increase the DOF, but the light gathering capability and resolution will decrease. Due to eye safety, increasing the light or illumination source is not encouraged as the source may damage the human eye.