NEWS 12 September 2023

Challenges and opportunities in gradient-index optics

A range of new manufacture methods promise gradient-index (GRIN) lenses of arbitrary distribution and an expanded range of refractive index variation.

These novel materials offer a new class of optical systems with improved size and mass and reduced optical component count. The new GRIN processes also offer opportunities in both visible and infrared wavebands. This Mikroniek article explores the new optical architectures enabled by these new degrees of freedom, such as multispectral imaging optics and low-mass avionic displays, as well as the challenges ahead in design, manufacture, metrology and environmental qualification to bring this technology to mass production. (Image courtesy of Qioptiq)

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References

Order of frictions and stiffnesses…

For lumped systems consisting of different frictions and stiffnesses, there has been confusion in literature about hysteresis curves and virtual play for many decades.

Make it clean

In mid-April, the second edition of the Manufacturing Technology Conference and the fifth edition of the Clean Event were held together, for the first time, at the Koningshof in Veldhoven (NL).

Bringing particles to light

Particle contamination monitoring and cleanliness control are fundamental to micromanufacturing processes across diverse industries to achieve cost-effective production of high-quality and reliable microscale devices and components.