| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiation-sensitive and refractive-index variable composition capable of varying the refractive-index of a material by a simple method, forming a thick film, imparting a sufficient large value of a varied refractive- index difference and affording a stable refractive-index pattern or an optical material without relying on service conditions thereafter. <P>SOLUTION: The radiation-sensitive and refractive-index variable composition comprises (A) a degradable compound, (B) a nondegradable compound selected from the group consisting of a ladder type polysilsesquioxane, its hydrolyzate and a condensate thereof and having a lower refractive-index than that of the degradable compound (A), (C) a radiation-sensitive degrading agent and (D) a stabilizer. The components (C) and (A) in a part exposed to radiation are degraded to cause a difference between the part exposed to the radiation and a part unexposed to the radiation in the refractive index by exposing the composition through a pattern mask to the radiation. Thereby, the pattern having the different refractive-index is formed. <P>COPYRIGHT: (C)2003,JPO |
