| abstract |
(57) [Summary] [Object] To provide a sealing member for a short-wavelength light emitting device having excellent discoloration resistance and crack resistance. A first component comprising an alicyclic epoxy obtained by hydrogenating an aromatic epoxy, preferably a bisphenol A type epoxy, and a second component comprising an alicyclic epoxy having a smaller molecular weight than the first component. A sealing member comprising: a main agent, wherein the amount of the second component is 10% by weight or more and less than 30% by weight; and a curing agent comprising a cationic polymerization catalyst. |