Photonics

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Contributions • Photonics

Smart monitoring of battery welding processes

One of the key laser application areas in the e-automotive industry is the welding of the battery. Sensor systems from Lessmüller Lasertechnik ensure reliable high-precision joining, which is vital in the assembly of any battery. Installed to various remote and fixed welding optics, the OCT, WELDCHECK, and WELDEYE sensor systems demonstrate real-time monitoring capability with great accuracy and over a wide dynamic range, enabling faster, cost-effective e-automotive laser processes and streamlined production.

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Contributions • Photonics

“First time right” freeform optics

Researchers at Brussels Photonics, Vrije Universiteit Brussel, have developed a “first time right” design method that eliminates the “step-and-repeat” and “trial-and-error” approach in optical system design. They demonstrated the systematic, deterministic, scalable, and holistic character of their disruptive technique with various freeform lens- and mirror-based high-end examples and invite optical designers to experience their new method hands-on via an open-access trial web application.

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Contributions • Photonics

Micro glass welding with millimeter-long filaments

The welding of glass with ultrashort-pulsed lasers (USP) is usually conducted with microscope objectives. Their short working distance limits the thickness of the work piece, the usable laser power and the feed rate of the process. To increase the possible dimensions of the welding partners and the process speed to industrial levels, a research team from Jena presents USP welding with a galvoscanner and a common F-theta lens. In a new article, they discuss differences between the well-known breakdown regime and the filamentation regime, and show tensile measurements.

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Contributions • Photonics

Easy 3D, non-contact surface profile measurements in air

One of the factors that contributes to the recent considerable reduction in the size and high integration of electronics and other devices it is the miniaturization of the electronic components that they contain. In addition, new fine functional materials have been developed and widely used in industrial fields including the automobile, aviation, metal, and chemical industries. As a result, higher accuracy and resolving power are required for minute three-dimensional measurement of these components and materials. Although a variety of devices are available to satisfy these requirements, the confocal microscope is gathering attention as the device of choice for easy three-dimensional, non-contact surface profile measurements in air.

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Contributions • Photonics

Can blue LEDs improve hygiene in clinics and public buildings?

Disinfection processes are of particular interest due to growing concerns over illnesses caused by microorganisms and the persistent problem of healthcare acquired infections. Additionally, because of the rise of antibiotic resistant bacteria, the investigation of novel non-antibiotic approaches for the prevention of infectious diseases has become highly topical. Blue light disinfection is such an approach and light-emitting diodes (LEDs) with an emission maximum in the range of 405-nm wavelength represent an attractive light source for this.

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inspect America

inspect America September 2025 available now!

inspect America September 2025 available now!

This edition covers the debut of two major trade shows in the US: SPS Atlanta and Embedded World North America, both showcasing significant advancements in the industry.