| 摘要 |
<p>An optical device assembled by means of an adhesive composition which is free from the cracking of an adhesive layer thereof, is prepared easily and has excellent adhesive strength. <??>The optical device is produced by placing an adhesive composition prepared by hydrolyzing, dehydrating and condensing a starting solution which contains 10 to 50 mol% of a silane compound represented by SiX<1>4 (X<1> is a hydrolyzable group) or a combination of the silane compound and a metal alkoxide, 25 to 65 mol% of a silane compound represented by PhSiX<2>3 (Ph is a phenyl group or substituted phenyl group, and X<2> is a hydrolyzable group), and 25 to 65 mol% of a silane compound represented by (CH3)2SiX<3>2 (X<3> is a hydrolyzable group) between an optical part and another part and heating it to bond the optical part to the another part.</p> |
