Abstract: The paper describes the design and manufacturing techniques used to produce digitized rugate filters for laser rejection in an ophthalmic microscope. The design is synthesized from the refractive index profile necessary to give the required bandwidth, attenuation and angle of incidence constraints. Process control using quartz crystal deposition and broadband diode array radiometer to monitor real time thin film growth is described. The results are presented showing close agreement between theoretical design and measured spectral performance. Further work to extend this technique to multiple laser line rejection is outlined.!5
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