TECH FOCUS: OPTICAL METROLOGY
Measurement for success
We roundup the latest optical lenses, mirrors and other optical components for optical metrology equipment
O
ptical metrology is a branch of metrology, the science of measurement,
that uses optical principles and technologies to measure physical quantities with high precision. There are numerous techniques and instruments that use light from optical sources to make accurate
measurements of various parameters such as distance, shape, surface roughness, and more.
Common techniques include interferometry, which involves the interference of light waves to measure variations in distance or surface shape. Laser-based
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which depends on the specific technique and application. Common optical components used in optical metrology include: lenses, mirrors, polarisers and analysers, prisms, optical filters, optical detectors, such as photodiodes or charge-coupled devices (CCDs), collimators and diffraction gratings.
Commertial
Knight Optical has been a cornerstone in Optical Metrology, delivering precision solutions for over 30 years. As a global leader in providing optical components, we’ve made significant contributions to advancing optical metrology applications. What sets us apart is our state-of-the-art metrology laboratory, equipped with cutting-edge instruments including the Varian Cary 5000 Spectrophotometer, ZYGO Verifire XPZ Interferometer System + Radius Slide, and more. We’ve recently augmented our capabilities with a range of specialised optics, including custom solutions and stock components such as precision filters, beamsplitters, mirrors, optical lenses, and prisms. Committed to excellence, our metrology lab, coupled with our meticulous QA department, guarantees the quality and precision that define Knight Optical. Visit our website to explore our comprehensive catalogue, including the latest additions, and experience the precision and reliability that our metrology lab ensures. For inquiries and tailored solutions, contact our UK and US teams.
relies on a variety of optical components, the choice of
36 Electro Optics February 2024
distance measurement systems are used for distance measurements in applications such as manufacturing, while holographic techniques are used for precision measurements and visualisation of 3D objects. Optical profilometry measures surface profiles and roughness using optical instruments. It is commonly used in industries such as microelectronics and optics manufacturing. Optical metrology has
applications in various industries, including manufacturing, aerospace, automotive, medicine, and research. The non-contact nature and high precision of optical metrology methods make them valuable tools for ensuring quality control and conducting detailed measurements in diverse fields. Optical metrology equipment
Products Vendors of optical metrology instruments and related optical equipment include Asphericon, which specialises in aspheric optics and offers a range of precision optical components used in metrology and imaging systems. Its product portfolio for metrology includes spheres, aspheres and freeform optics. It also provides optical mirrors, optical systems for homogeneous beam shaping and optical coatings from UV to IR.
Bruker is a manufacturer of
high-performance scientific instruments and analytical and diagnostic solutions designed to enable scientists to explore materials at molecular, cellular and microscopic levels. The company provides optical profiling systems and interferometers for surface analysis and nanoscale metrology. 4D Technology designs and
manufactures dynamic laser interferometers and optical profilers, and surface defect gauges. Applications include precision machined surfaces, optics, astronomy, aerospace, space-based telescopes, flexible
electronics, automotive, and in- line production measurement. Daheng New Epoch
Technology is a technical company that specialises in optics. It provides optical and imaging products, including lenses, filters, and cameras for metrology applications. Edmund Optics is a supplier of optics, imaging, and photonics products. The company offers a wide range of optical components, including lenses, mirrors, filters, and beam splitters for various metrology applications. Hamamatsu Photonics offers
a variety of product solutions, which are designed to achieve the performance levels required for optical measurement applications. The company’s optical products are used in applications including gas analysis and range finding, as well as many others. Hinds Instruments specialises in technology for polarisation measurement. Its product offerings include research modules for universities, national laboratories and R&D teams, as well as complete systems for laboratory quality control and in-line production. The company’s technology can be found in applications from astronomical source measurement, to pharmaceuticals. Horiba Scientific offers
interferometric solutions for spectroscopy, ellipsometry, and surface characterisation in research and industry. The company’s Real Time Interferometric Process Monitor is designed to provide high-
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