PROCESS FOR PRODUCING AN OPTICAL DEVICE

摘要

An optical element produced through bonding with an adhesive composition whi ch gives an adhesive layer developing no cracks, can be easily prepared, and ha s excellent bonding strength. Also provided is a process for producing the optical element which comprises: disposing an adhesive composition obtained by subjecting to hydrolysis and dehydrating condensation a raw solution containing 10 to 50 mol% silane compound represented by SiX14 (X1 represents a hydrolyzable group) or combination thereof with a metal alkoxide, 25 to 65 mol% silane compound represented by PhSiX23 (Ph represents phenyl or substituted phenyl and X2 represents a hydrolyzable group), and 25 to 65 mol % silane compound represented by (CH3)2SiX32 (X3 represents a hydrolyzable group) between an optical part and other part(s); and then heating the composition to bond the optical part to the other part(s).