To provide an optical device which does not deteriorate in an accelerated degradation test in which repetition is made between a high temperature and high humidity state and a low temperature state.
The optical device includes in the inside of a light transmittable housing 10: a shaft shaped core 30 which is obtained by self convergently photocuring a photosetting resin; and a clad 40 including an organosilsesquioxane, an epoxy resin and an oxetane resin. The epoxy resin and the oxetane resin are increasingly smaller in a curing shrinkage rate than an acryl resin when they are cured, and consequently a tensile stress hardly remains in the inside of the clad 40 which is a formed cured product. The epoxy resin, the oxetane resin and the organosilsesquioxane are high in heat resistance and small in hygroscopicity compared with the acryl resin having an ester bond and are not consequently swollen due to moisture even at a high temperature and high humidity. Furthermore, the light transmittable housing 10 is preferably formed from the epoxy resin and the oxetane resin.
COPYRIGHT: (C)2011,JPO&INPIT
Nakao Akari
Masatoshi Yonemura
Akiko Okita
Kazuhiro Terada
Kenji Haga
Yukitoshi Ise
Toyoda Gosei Co., Ltd.
| JP4130311A | ||||
| JP6076357A | ||||
| JP2007212792A | ||||
| JP2007225704A | ||||
| JP2002365459A | ||||
| JP2008275847A | ||||
| JP2005092104A | ||||
| JP2006058831A | ||||
| JP2000081520A | ||||
| JP9500981A | ||||
| JP8512146A | ||||
| JP2003335823A |