To obtain a resin composition for an adhesive, which has a low refractive index and excellent transparency, is rapidly cured by irradiation with an active energy ray such as ultraviolet light, etc., provides the cured material having excellent transparency, adhesiveness to glass, solvent resistance and heat resistance and is mainly useful for optical articles.

The resin composition comprises a fluorine atom-containing glycidyl ether compound (A) represented by formula (1) (Rf is an X-(CF2)b-(CH2)a or an X-(CF2)b-(CH2)a-O (X is a hydrogen atom or a fluorine atom; n is an integer of 0-2; b is an integer of 1-12); at least one of R1 and R2 is a glycidyl ether group or is a hydroxy group when not a glycidyl ether group).