of manufacturing a light source includes forming a plurality of metal bumps on a mounting substrate providing a ceramic substrate having at least one light emitting element mounted thereon and bonding the mounting substrate and a ceramic substrate to each other via the metal bumps application_number US 201514869499 A description in the following a light source and a method of manufacturing the same according to embodiments of the present invention will be described note that the present invention is not limited to the embodiments and examples for the sake of convenience the side of a mounting substrate on which light emitting elements are disposed is referred to as the upper surface side or the plan side a light source according to a first embodiment will be described below with reference to the drawings fig1 is a schematic perspective view showing the light source according to the first embodiment fig2 is a schematic cross sectional view taken along line ii ii in fig1 showing the light source according to the first embodiment the light source includes a mounting substrate 10 metal bumps 20 a ceramic substrate 30 light emitting elements 40 and a sealing member 50 the mounting substrate 10 is an approximately rectangular parallelepiped member formed in a cup shape having a bottom surface and side surfaces and defining an opening in a plan view a periphery defining the opening.