High and Matched Refractive Index Liquid Adhesives for Optical Device Assembly

Published:

September 30, 2020

Author:

Taro Kenmochi

Abstract:

There is an increase in the number of optical sensors and cameras being integrated into electronics devices. These go beyond cell phone cameras into automotive sensors, wearables, and other smart devices. The applications can be lens bonding, waveguide imprinting, or other applications where the adhesive is in the optical pathway. To support these various optical applications, new materials with tailorable optical properties are required. There is often a mismatched refractive index between plastic lenses such as PC (Poly Carbonate), COP (Cyclo Olefin Polymer), COC (Cyclo Olefin Copolymer), PMMA (Poly Methyl Methacrylate), and UV curable liquid adhesive. A UV curable liquid adhesive is needed where you can alter the refractive index from 1.470 to 1.730, and maintain high optical performance as yellowness index, haze, and transmittance. This wide range of refractive index possibilities provides optimized optical design. Using particular plastic lens must consider how chemical attack is occurring during the process. Another consideration is that before the UV curable liquid adhesive is cured, chemical raw component can attack the plastic lens which then cracks and delaminates. We will also show engineering and reliability data which defined root cause and provided how optical performance is maintained under different reliability conditions....

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Company Information:

Kyoritsu Chemical & Co., Ltd

Research, development, manufacturing and marketing of sophisticated chemical products developed by applying fine chemicals and nano-technologies in cutting-edge fields such as home information appliances, IT, semiconductors, batte

Tokyo, Japan

Adhesives / Dispensing

  • Phone +81 (0)3-3500-2421

Kyoritsu Chemical & Co., Ltd website

Company Postings:

(1) technical library article

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