3 May 2010 Thermally robust IBS coatings for deep concave surfaces
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Precision Photonics Corporation (PPC) has developed a method of applying Ion Beam Sputtered (IBS) MWIR antireflective coatings to the interior of a tangent ogive dome. Although IBS has traditionally not been used in this application, it is known that IBS provides the highest density coatings using very hard, durable materials. We achieve a variable coating thickness profile by means of shadow masking coupled with sophisticated 3 dimensional mathematical modeling, which optimizes the antireflection performance over a wide range of look angles for an infrared seeker inside the dome. The coating design for this project survives temperatures up to 1000ºC.
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Dale Ness, Darrel Pitrat, Christopher Wood, "Thermally robust IBS coatings for deep concave surfaces", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 766025 (3 May 2010); doi: 10.1117/12.852459; https://doi.org/10.1117/12.852459

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