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    Dielectric Coatings - Potential Drawbacks?

    Thank you, John for drawing our attention to that. As far as I recall, mention had previously only been made of the single surface. If we considered a binocular with 8° TFoV, then angles of incidence could be reduced from 45° to 41°, which is getting very close to the minimum angle of incidence...
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    Dielectric Coatings - Potential Drawbacks?

    Schmidt-Pechan prisms are the most widely used roof prism type in current binoculars. Compared to Abbe-König prisms they are more compact but have two disadvantages. The first, which has been widely discussed here, is the need for one prism surface to provide total internal reflection and direct...
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