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Radius of Curvature Optical Testing Applications

ZYGO's automated radius of curvature measurement system features a motorized stage which moves the optic between cats-eye and confocal positions.

ZYGO laser interferometers can be used to accurately determine the radius of curvature of a spherical optic by measuring the distance between "cats-eye" and confocal locations. To simplify the process of measuring this distance, ZYGO offers a linear slide rail to which an optical mount is attached, as well as higher precision stand-alone options.

Radius of curvature measurement setup using a Verifire™ interferometer, a manually-operated slide rail, and a distance measuring interferometer.
Vertical Workstation – performs automated radius of curvature measurements on larger optics to the highest degree of precision.

Radius of curvature slide rails are available in both manual and motorized versions, with either an encoder scale or a distance measuring interferometer (DMI).

For extreme precision measurements, ZYGO offers stand-alone systems, in a vertical downward-looking orientation, that feature a multi-axis DMI interferometer and active isolation.

Radius of curvature calculations are performed by ZYGO's Mx™ analysis software, included with every interferometer system.

Configuration Options

ZYGO offers several product options for measuring radius of curvature, including horizontal and vertical configurations, with either manual or automated operation.

Verifire™ – Several configuration options are available. Please consult the Laser Interferometer Accessory Guide for details.

Vertical Workstation / MetroCell – ZYGO offers standard and custom stand-alone workstations to provide precise radius of curvature measurements in a downward-looking configuration. These systems employ a multi-axis DMI system and an active isolation system to achieve sub-micrometer repeatability.

Webinar: Precision Radius Metrology
This 28-minute, on-demand, free webinar reviews methods of measurement of radius of curvature of optical components. Click to sign up.
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Please use the form below to contact us with any questions you have regarding Radius of Curvature measurement, or any other ZYGO metrology applications.

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