Micro Lens Surface Metrology

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Compass™ Micro Lens Process Metrology Systems
• Aspheric Surface Form, Deviation, and Topography
• Relational/Dimensional Lens Parameters

Aspheric micro lens pin mold prototypes, shown with production lenses ranging in size from 3 to 6 mm. Compass™ systems measure critical parameters on all of these, and more!
Compass™ - Provides precision metrology of micro lens aspheric surface form, deviation, and topography, as well as the relational/dimensional parameters provided by the Compass RT system.
Compass™ RT - Provides precision metrology of micro lens relational/dimensional parameters, plus general profilometry applications.
Relational/Dimensional Lens Parameters – Datum and lens-to-datum  (click to enlarge)
ZYGO's Compass™ metrology systems set the benchmark for automated, non-contact 3D surface metrology and process control for discrete micro lenses and molds critical to compact imaging systems such as automotive vision systems and cameras for smart phones and tablets.

There are two models of Compass™ systems available, depending on your metrology needs...

Compass – ZYGO's advanced solution for precision metrology of micro lens surface form and deviation, topography, and relational/dimensional parameters. This is the ideal choice for applications that require complete characterization of spherical or aspherical micro lenses and their alignment features.

Compass RT – A fast and flexible system for precision metrology of micro lens relational/dimensional parameters, plus general profilometry applications. This is the ideal choice when form deviation metrology is not required.

Production-Proven Technologies

At the core of the Compass system is ZYGO's optical profiler technology, based on Coherence Scanning Interferometry (CSI), which delivers industry-leading precision, versatility and speed for repeatable metrology and production process control. Unique to Compass™ and Compass™ RT are aspheric form and deviation metrology and relational / dimensional metrology of alignment features.

Form and Deviation

• Full surface, non-contact, 3D mapping of surface form for spherical or aspherical lenses and molds

• Sub-nanometer height precision of surface form and deviation, with millions of data points

• Advanced analysis of form deviation from design prescription

• Rapid and automated identification of process asymmetries

Relational/Dimensional Metrology

• Quantitative metrology and inspection of mechanical design features on single or dual-sided lens elements

Datum and Lens-to-Datum Characterizations

• Centration interlock diameter

• Annular datum flatness, thickness, parallelism and wedge

• Lens apex height, centration, center thickness and apex-to-apex centration

Powerful Analysis Software

The Compass systems are powered by ZYGO's comprehensive Mx™ software platform, providing the key functions of data acquisition, analysis and visualization, and instrument hardware automation. The Compass system's multi-functional architecture supports measurements of a wide range of parts and metrology parameters, including mold pins and discrete lenses.
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Use the form below to get more information, request a demonstration of the Compass system, or to arrange to send us your samples for a free analysis.

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A ZYGO Exclusive Feature...

Sloped surfaces near the edges of a lens reflect light away from the objective, resulting in a loss of data.
ZYGO's proprietary
6-axis stage keeps the
lens surface normal to the
objective, ensuring reliable data is captured for every part of the lens. Proprietary stitching algorithms create a detailed 3D map of the entire lens surface.

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