Interferometric surfaces: optical precision for planarity measurement
Lobre works closely with clients in Italy and abroad to design and manufacture high-precision interferometric optical flats (available as single-sided and double-sided interferometric flats).
These tools are designed to measure planarity in various industrial and scientific contexts, with strict tolerance parameters. For this reason, the precision interferometric flats we produce are made using high-quality materials and advanced polishing techniques, ensuring the surface accuracy of Interferometric surfaces (up to λ/50).
Fill out the dedicated form on the Contact us page to get in touch with our experts and request a custom supply: we handle both small batches and serial production.
For Ultraviolet (UV)
– Quartz (Fused Silica UV Grade)
For Visible Spectrum (VIS)
– N–BK7
– Zerodur
For Infrared (IR)
– Zerodur
Materials for Interferometric flats
The most suitable materials for manufacturing interferometric systems are Zerodur, Quartz (Fused Silica UV Grade), and N-BK7.
However, materials with specific properties can also be used to create non-standard components, such as optical flats for advanced scientific applications, high-precision surfaces for optical analysis, optical surfaces for specialised interferometric detection and more.
Technical Features
We manufacture interferometric optical flats using optical glass discs, which can have one or both surfaces polished and precision lapped (accuracy up to λ/50).
Interferometric optical flats are specifically designed for surface flatness control and are suitable for a wide range of applications. Common uses include: interferometric flats for quality control, interferometric flats for R&D, interferometric flats for industrial measurements and interferometric flats for scientific applications.
Specifically, interferometric flats for surface quality control are used as follows:
the surfaces being tested are placed in contact with the interferometric surface. Where imperfections are present, air gaps form. By introducing a light source, interference fringes can be detected and used to quantify the error with absolute precision.
If the surfaces are free of defects and therefore perfectly flat, parallel fringes (lines) will be visible.
Lobre applies its decades of experience to provide optical surfaces for interferometry of the highest quality and reliability. Email us to request a custom supply in Italy or abroad: there is no quantity limit, and we support clients both for small batch production and large-scale manufacturing.
