A light emitting module comprising: a light emitting diode chip ; and a lens dispersing luminous flux of light emitted from the light emitting diode chip in a viewing angle wider than that of light emitted from the light emitting diode chip , wherein the lens includes: a lower surface having a disk-shaped surface and a concave portion disposed in a central portion of the lower surface and surrounded by the disk-shaped surface, wherein light emitted from the light emitting diode chip is incident into the concave portion ; an upper surface from which the light incident on the concave portion is emitted; and wherein the upper surface includes a first concave surface positioned in a central axis thereof and a convex surface extending from the first concave surface ; wherein the concave portion includes a lateral surface and an upper end surface , wherein the lateral surface extends from the upper end surface to an entrance of the concave portion , wherein the closer to the upper end surface a point of the lateral surface is, the closer to the central axis it is, and wherein the upper end surface is positioned in a region narrower than the entrance region of the concave portion , and characterized in that the upper end surface comprises an upwardly convex surface in the vicinity of the central axis and a downwardly convex surface surrounding the upwardly convex surface. a light emitting diode chip ; and a lens dispersing luminous flux of light emitted from the light emitting diode chip in a viewing angle wider than that of light emitted from the light emitting diode chip , wherein the lens includes: a lower surface having a disk-shaped surface and a concave portion disposed in a central portion of the lower surface and surrounded by the disk-shaped surface, wherein light emitted from the light emitting diode chip is incident into the concave portion ; an upper surface from which the light incident on the concave portion is emitted; and wherein the upper surface includes a first concave surface positioned in a central axis thereof and a convex surface extending from the first concave surface ; wherein the concave portion includes a lateral surface and an upper end surface , wherein the lateral surface extends from the upper end surface to an entrance of the concave portion , wherein the closer to the upper end surface a point of the lateral surface is, the closer to the central axis it is, and wherein the upper end surface is positioned in a region narrower than the entrance region of the concave portion , and characterized in that the upper end surface comprises an upwardly convex surface in the vicinity of the central axis and a downwardly convex surface surrounding the upwardly convex surface. a lower surface having a disk-shaped surface and a concave portion disposed in a central portion of the lower surface and surrounded by the disk-shaped surface, wherein light emitted from the light emitting diode chip is incident into the concave portion ; an upper surface from which the light incident on the concave portion is emitted; and wherein the upper surface includes a first concave surface positioned in a central axis thereof and a convex surface extending from the first concave surface ; wherein the concave portion includes a lateral surface and an upper end surface , wherein the lateral surface extends from the upper end surface to an entrance of the concave portion , wherein the closer to the upper end surface a point of the lateral surface is, the closer to the central axis it is, and wherein the upper end surface is positioned in a region narrower than the entrance region of the concave portion , and characterized in that the upper end surface comprises an upwardly convex surface in the vicinity of the central axis and a downwardly convex surface surrounding the upwardly convex surface. <EOS>