| 摘要 |
PROBLEM TO BE SOLVED: To provide: an optical conversion member with a high quantum conversion yield; and a method for manufacturing an optical conversion member with a high quantum conversion yield.SOLUTION: An optical conversion member comprises: phosphor powder; and glass. In the optical conversion member, a carbon content is 0.5-10 ppm. A method for manufacturing an optical conversion member comprises: a step (kneading step) for kneading glass powder, phosphor powder, a resin and an organic solvent into a kneaded mixture; a step (molding step) for molding the kneaded mixture into a mold; and a step (baking step) for baking the mold. The baking step involves two or more stages different in condition; in the first stage, a baking atmosphere is over 10Pa, and the oxygen density is 16% or more, whereas in the second stage, the baking atmosphere is 10Pa or less, or the oxygen density is 1-15%. When the temperature in the first stage is denoted by Td, and the temperature in the second stage is denoted by Tb, the temperatures Td and Tb satisfy the following condition: Td is 450°C or lower and Tb-Td is 100-300°C.SELECTED DRAWING: None |
