The bonding of optical elements

Since then, private adhesive manufacturers have developed a myriad of polyester, epoxy and urethane based single and two component adhesives for bonding optical elements. All of the items listed must be known by the bonding technician and perhaps communicated to the adhesive manufacturer in order to correctly choose the cement to be used. We will first discuss bonding a simple crown and flint doublet with a two component adhesive in order to establish the proper preparation of this type of adhesive and also to establish a technique for applying a cement whether it be of the single or two component variety.

Source: www.optical-cement.com