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Hyperbolic mirrors are intended to form image of object in focal plane, and normally are used in astronomy telescopes, as well as other optical systems demanding broadband reflection and excellent photographic effect.
For example, R-C telescopes utilize two hyperbolic mirrors as the primary and secondary mirror, which correct for coma, which also results in a smaller spot size on and off axis; Cassegrain telescopes have a primary parabolic mirrors focusing its rays onto a convex hyperbolic secondary mirror, which yields excellent correction over moderate fields both for visual and photographic astronomy.
Like ellipsoidal mirrors and parabolic mirror, hyperbolic mirror also can be on-axis or off-axis and can be supplied in a variety of materials, including BK7 glass, copper, fused silica, UV grade fused silica, nickel, and other optical glasses. Common coatings include none (uncoated), enhanced aluminum, protected aluminum, dielectric, protected gold, and silver.
We can provide both on-axis and off-axis hyperbolic mirrors with the shape of either convex or concave, and especially specialize in production of medium to large-size custom hyperboloid with exacting tolerances, high grade surface finish and difficult coatings. Surface accuracy can be verified by the Foucault test or on the Zygo interferometer upon the request.
Our optical designers are always available to assist with your special needs and our production in China is ready to meet your quantity requirements.
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