| abstract |
The present invention is a curable composition comprising a component (A), a component (B), a component (C), and a component (D), the curable composition comprising the component (A) and the component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:20,n the component (A) being a silane compound (co)polymer that is represented by a formula (a-1) or a formula (a-2),n n(CHR 1 X 0 -D-SiO 3/2 ) m (R 2 SiO 3/2 ) n (CHR 1 X 0 -D-SiZ 1 O 2/2 ) o (R 2 SiZ 2 O 2/2 ) p (CHR 1 X 0 -D-SiZ 3 2 O 1/2 ) q (R 2 SiZ 4 2 O 1/2 ) r (a-1)n n(R 3 SiO 3/2 ) s (R 3 SiZ 5 O 2/2 ) t (R 3 SiZ 5 2 O 1/2 ) u (a-2)n the component (B) being fine particles having an average primary particle size of more than 0.04 μm and 8 μm or less, the component (C) being a silane coupling agent that comprises a nitrogen atom in its molecule, and the component (D) being a silane coupling agent that comprises an acid anhydride structure in its molecule, and an optical element-securing composition, and a cured product, and an optical element-securing material, and a method for using the curable composition, and an optical device. |