To provide a production method for easily performing film formation by supporting a number of optical elements with high density.

According to this production method, since a plurality of lenses LZ, which are a plurality of optical elements, are arranged so as to be packed in a plurality of guide parts 26 constituting a groove-like guide part 25 provided in a holder 20, the plurality of lenses LZ can be easily arranged with high density so as to be aligned in the direction in which the guide part 26 extends. Thus, efficiency of a film formation process of the lens LZ can be promoted.