Off-Axis Blog

Aspheric Optics Manufacturing

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Making aspheres with Robotic Polishing Aperture Optical Sciences Inc. applies two unique technologies, Zeeko robotic grinding and polishing and QED’s magnetorheological (MRF) polishing. Both technologies address the growing demand for high performance aspheric lenses and mirrors for industry and science. We offer MRF polishing through our partner Okamoto Optics and provide Zeeko Robotic polishing on optics up to 800 mm in diameter in our advanced fabrication facility in Central Connecticut. Making optical mirrors…

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Posted: March 26, 2017

Zero-Expansion Ceramic Mirrors

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INTRODUCTION Cordierite (2MgO-2Al2O3-5SiO2) is the name for a variety of low expansion ceramics that can be used for optical applications with some highly compelling advantages. Cordierite material can be made with a nearly zero expansion coefficient and has higher modulus and thermal conductivity when compared with traditional glass-ceramics. As a sintered material, lightweight structures can be efficiently machined in the “green” pre-sintered state and options…

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Posted: March 26, 2017

AOS Quality Grades for Aspheres

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AOS offers multiple quality grade options depending on the application desired. These quality grades can differ significantly in price to allow customers to select the most affordable option for their application and budget. Conventional ways of specifying optical quality in aspheric optics often do not address mid-spatial error tolerances, which are key to predicting imaging quality. Defining the specification for gradient limits the amplitudes of…

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Posted: August 28, 2016
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