| 摘要 |
PROBLEM TO BE SOLVED: To improve durability under high temperature and high humidity by using an alicyclic structure-containing thermoplastic resin, a compound having an alcohol hydroxyl group and ether bond or ester bond, and a filter for the main materials of a reflector. SOLUTION: At least one kind of a blended material constituted of an organic compound having at least one alcohol hydroxyl group and at least one ether bond or ester bond, an organic or inorganic filler, an elastomer, and a compound noncompatible with an alicyclic structure-containing thermoplastic resin is blended with an alicyclic structure-containing polymer resin forming a reflector. A cycloalkane structure is preferably used for the alicyclic structure of the alicyclic structure-containing polymer resin. A norbornane polymer and its hydrogen additive are preferably used for this polymer resin. Boron fibers and lithium fluoride are suitable for the filler, and isoprene rubber and its hydrogen additive are suitable for the elastomer. |
