The Impac IN 6/78-L by Advanced Energy is a new pyrometer specially developed to address the challenges posed by using infrared temperature measurement on ultra-thin glass.

Requiring high-quality display glass with a low-defect rate, products such as smart phones and tablets typically tend to use to thinner glass (<1mm) due to weight and energy reasons.

Infrared temperature measurement ensures improved accuracy, resulting in better control of the production process and lower stress to flat glass sheets, but measuring the temperature of ultra-thin glass can be a difficult task. When using a 5 micron instrument for such thin glass, the material is no longer opaque; the transmittance rises and background signals can no longer be discounted at this wavelength.

Advanced Energy’s new instrument enables measurement of thin glass, including that less than 1mm in thickness at a central wavelength of 7.8 micron (7.5–8.1 micron range). In the area around 7.5 microns, the transmission in glass with 0.2mm thickness is sufficiently small and the reflection at 8.1 microns is still small enough. An anti-reflective lens, created using semi-conductor material, significantly reduces environment sensitivity. With a sensor-based design on a full digital core, the Impac IN 6/78-L pyrometer enables a wide temperature range and improved accuracy over standard process temperatures.

www.advancedenergy.com

View Advanced Energy‘s presentation in the Virtual Marketplace: www.glassworldwide.co.uk/virtual-marketplace. The full version of the above news has been published in the May/June issue that has been posted globally and is available to read free of charge in the Digital Archive (sponsored by FIC) at https://www.glassworldwide.co.uk/Digital-Issues