Optical Profilometry

Optical Profilometry Measurement and Imaging Services

Laser Confocal, Patterned Light, White Light Interferometry

In the area of optical profilometry, Covalent Metrology offers Laser Confocal Microscopy, Patterned Light/Wide Area 3D Measurements, and White Light Interferometry. These techniques are valuable for assessing surface topography and other characteristics of a variety of advanced materials and nanotech devices.

Below, you’ll find more information regarding our optical profiling services.

Technique Laser Confocal Microscopy wide area 3d / Patterned Light measurement White Light Interferometry
Tool Name Keyence: VK-X1100 Keyence: VR-3200 Zygo: ZeGage Plus
Tool Image product-img product-img product-img
Resolution z: 3 nm x, y: 120 nm z: 1-5 µm x, y: 1-5 µm z: 1 nm x, y: 250 nm
Best uses High vertical accuracy; High lateral resolution Measuring large areas quickly (distances, flatness, step height): cm scale Best vertical resolution for the surface quality of polished surfaces
Materials that can be measured Opaque, translucent, transparent Matte to highly reflective Opaque, translucent Matte to moderately-reflective But transparent & highly-reflective requires matte coating Opaque, translucent, transparent Matte to highly reflective
Measurement Area µm to mm mm to cm µm to mm
Maximum stitch area ~50x50mm ~20cm ~1x1cm
Limitations Steep walls and features Steep walls and features Highly reflective surfaces
  • Steep walls and features
  • Multimaterial Samples
Industries and Parts Automotive Biotech and nano-devices Optical devices Metal Materials processing Semiconductor/Electronics Small Parts Ceramics Automotive Biotech and nano-devices Metal Electrical/Electronics Tooling PCB Connectors BGA Small Parts Surfaces Plastics Automotive Biotech and nano-devices Optical devices and lenses Metal Electrical/Electronics Tooling PCB Connectors BGA Small Parts
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Mid-Range Optical Profilometry: An Overview

Profilometry for surface characterization and dimensioning is a key area of expertise for Covalent Metrology and is proving invaluable to customers across a wide range of applications. The purpose of this paper is to discuss the technology behind each of the three optical profilometry techniques Covalent Metrology offers and to discuss the relative advantages of each of them.