At the SPIE Photonics West exhibition in San Francisco, California, from January 30 to February 1, 2024, Panacol will feature new optical-grade resins and adhesives for imprint and optical bonding applications. The company is an internationally active provider in the growth market of industrial adhesives. Its new adhesives (on show) can be used for light carpets in the automotive industry, for sensors in smart devices and wearables, or for creating structured light in projectors or time-of-flight sensing applications.
The specially formulated adhesives for imprint replication of refractive lenses and diffractive optical elements (DOEs) are suitable for micro- and nano-imprint lithography, wafer-level optics and wafer bonding.
The newly introduced adhesives Vitralit UC 1632 and Vitralit UC 1658 are in the viscosity range of 100-200mPas and can be easily applied via puddle dispensing, spin coating or jetting. According to Panacol, they offer excellent adhesion to commonly used grades of glass wafers and upcoming new polymer substrates including optical-grade PET or PC. Once applied and imprinted, the adhesives are quickly cured with UV light, creating a durable structure on the wafer. Both adhesives are tailored specifically to meet the high demands of optical reliability, such as low yellowing, temperature stability and shape retention.
For black shading and masking purposes, Panacol also offers a black UV-curable adhesive, Vitralit BL UC 1103. This black epoxy adhesive is permeable to UV light while uncured. After curing it is opaque and light-blocking.
For optical bonding and alignment, Panacol has developed UV-curable adhesives Vitralit 7311, Vitralit VBB-60 and Vitralit 1860, and heat-curable adhesives Structalit 5531 and Structalit 5511. These feature high adhesion to glass and widely used plastic substrates. Adhesive Vitralit UD 8057 is formulated for dual curing using UV/visible light and atmospheric moisture. This allows the adhesive to complete its curing using moisture in shaded areas that cannot be reached with UV/visible light.
These adhesives for optical bonding are cured easily with Hönle’s high-intensity LED curing systems, which match the wavelengths of the Panacol photo-initiators. Once cured, Panacol’s optical-grade adhesives are flexible and tension equalizing, reducing the stress on dissimilar substrates.
Panacol will be exhibiting on Booth 4342 at SPIE Photonics West at the Moscone Center in San Francisco.
For more on materials, please click here.