To provide production methods for a 3-D mold, a finely processed product, and a fine pattern molded product in which the depth and the line width can be formed with high precision, a 3-D mold, a finely processed product, a fine-pattern molded product, and an optical element formed with high precision. Thus, the learning machine can develop the alpha wave and the theta wave in the user’s brain during the sleeping period, thereby enhancing the memory learning effect of the user’s brain. The feed lever on an opposing end includes a handle that extends along the air motor so that a user can grip both the control lever of the air motor and the handle of the feed lever simultaneously with a single hand. Digital linear images of the object are generated as the object intersects the coplanar illumination and imaging planes, and digital area-type digital images of the object are generated as the object intersects with the area-type illumination and imaging zone, within the 3D imaging volume during system operation.