Bern Optics (Westfield, MA) has introduced coated optical apertures with outside dimensions as small as 0.20 mm in diameter. The aperture can be circular or made to custom shapes and held to micron tolerances. Created from optical and filter glasses, these microscopic elements can be produced with apertures positioned within microns of a physical feature. Custom designed anti-reflection coatings can be applied to all transmitting surfaces. Apertures cemented to other optical components in a sub-assembly may also be supplied. They are suitable for applications including endoscopes and other medical devices.
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