Light-emitting element lamp and method for manufacturing the same

A method of manufacturing a light-emitting element lamp, comprising:

• a first step of placing a bottom surface of a first lens of spherical segment shape having a spherical cap with a radius of curvature R1 on a substrate back surface on an opposite side of a semiconductor layer of the substrate in a light-emitting element having the semiconductor layer provided on the substrate;
• and
• a second step of forming a second lens to be attached to two surfaces, a protruding surface from the substrate back surface of a bottom surface of the first lens excluding an attaching surface to the substrate back surface and a side of the light-emitting element, wherein,
• the second step includes a step in which the second lens forms a concave curve from a peripheral side of the bottom surface of the first lens to the side of the semiconductor layer on the side of the light-emitting element, wherein
• the concaved curve of the second lens is configured to extract light from the light-emitting element out of the second lens,
• a minimum radius of curvature R2 of the concave curve of the second lens is greater than or equal to half a thickness of the substrate and smaller than or equal to 1.2 mm in a cross-section that passes through an apex of the first lens, is parallel to a long side of the attaching surface, and is perpendicular to the attaching surface, and
• a thickness of the substrate is 200 μm or more and 1000 μm or less.