Patent ID: 7016127

Claim:
A method of mounting an optical member having a luminous flux conversion portion on a supporting substrate, comprising: forming a first mark for use in positioning on a plane of the optical member, the plane being approximately perpendicular to a surface of the luminous flux conversion portion; forming a second mark for use in positioning on the supporting substrate; mounting the optical member on the supporting substrate such that the plane of the optical member approaches the supporting substrate and using the first mark on the optical member and the second mark on the supporting substrate; wherein the first mark is in the shape of a groove; and wherein the optical member comprises: the luminous flux conversion portion being formed on a surface of an optical substrate, an edge portion formed along one part of the circumference of the luminous flux conversion portion, and a handling portion provided on a side of another part of the circumference of the luminous flux conversion portion in a plane approximately parallel with the surface of the luminous flux conversion portion and having a width wider than the luminous flux conversion portion, wherein the groove is formed on the handling portion.