Patent ID: 8728624

Claim:
A method of manufacturing a sealed optical device, comprising: applying a fixing material to an optical device, said fixing material including a silane compound polymer as a main component, said silane compound polymer being produced by condensing a silane compound mixture that includes: at least one silane compound (1) shown by the following formula (1): R 1 Si(OR 2 ) p (X 1 ) 3-p , (1) at least one silane compound (2) shown by the following formula (2): Si(OR 3 ) q (X 2 ) 4-q , (2), at least one silane compound (3) shown by the following formula (3): R 4 Si(OR 5 ) r (X 3 ) 3-r ,. (3), wherein R 1 represents a group including an ester structure or a cyanoalkyl group, wherein R 2 represents an alkyl group having 1 to 6 carbon atoms, an alkoxyalkyl group having 2 to 10 carbon atoms, or a group shown by Si(R a )(R b )(R c ), wherein R a , R b , and R c individually represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an aryl group, or a halogen atom, wherein at least one of R a , R b and R c represents a halogen atom when p is 3 and all of R 2 represent the group shown by Si(R a )(R b )(R c ), wherein X 1 represents a halogen atom, wherein p is an integer from 0 to 3, wherein R 3 represents an alkyl group having 1 to 6 carbon atoms, wherein X 2 represents a halogen atom, wherein q is an integer from 0 to 4, wherein R 4 represents (a) a phenyl group optionally including a substituent, excluding a phenyl group that includes an ester structure, (b) an alkyl group having 1 to 20 carbon atoms optionally including a substituent, excluding an alkyl group that includes an ester structure and a cyano group, or (c) an alkenyl group having 2 to 20 carbon atoms, wherein R 5 represents an alkyl group having 1 to 6 carbon atoms, wherein X 3 represents a halogen atom, wherein r is an integer from 0 to 3, wherein the molar ratio of the silane compound (1) to the silane compound (2) included in the silane compound mixture is 70:30 to 95:5, and wherein the silane compound polymer has a weight average molecular weight of 1000 to 10,000.