Edge blackening is a widely utilized optical technique aimed at reducing the effects of stray light, minimizing internal reflections, and enhancing the contrast of optical systems.
This process involves applying a light-absorbing material, such as black paint or coating, to the edges or non-working surfaces of optical components like lenses, prisms, or windows.
By blackening non-working surfaces, designers can reduce scattered light and absorb secondary reflections, thus enhancing imaging contrast and minimizing ghosting or flare.
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