Development of Refractive Index Matching Adhesive for Optical Components

Stream Technologies拥有一种用于高光谱成像的专利系统，该系统依赖于对 交替的高折射率和低折射率材料层，形成一系列平面波导。该组件 取决于粘合剂;然而，粘合剂的折射率必须与玻璃（1.77）匹配， 技术发挥作用。Stream的应用要求棱镜之间的粘合是永久性的，因此， 需要粘合剂/环氧树脂来永久地结合两个棱镜。本提案的目标是制定一项 新的粘合剂流的应用，具有更接近所需的1.77值的折射率。此外，委员会认为， 粘合剂应易于使用，在宽温度范围内稳定，且在 棱镜。Stream还希望粘合剂易于在棱镜表面上铺展，可在空气中固化，或 在暴露于UV光或升高的温度时，具有长的保存期，并且透射400 nm的波长 - 2微米好。

Stream Technologies has a patented system used for hyperspectral imaging which relies on precise control of layers of alternating high and low index materials, creating a series of planar waveguides. The assembly is dependent on an adhesive; however, the adhesive's refractive index must be matched to the glass (1.77), for the technology to function. Stream's application demands that the bond between the prisms is permanent, therefore, an adhesive/epoxy is needed to permanently bond the two prisms. The objective of this proposal is to develop a new adhesive for Stream's application that has a refractive index closer to the required 1.77 value. Furthermore, the adhesive should be easy to use, stable over a wide temperature range, and yield a defect-free bond between the prisms. Stream would also like an adhesive that is easy to spread on the prism surfaces, curable in air or upon exposure to UV light or elevated temperature, has a long shelf life, and transmits wavelengths of 400 nm - 2 microns well.