Patent ID: 8569787

Claim:
A light source apparatus, comprising: a semiconductor light emitting device including a light emitting unit, a first conductive member, a second conductive member, a sealing member, and an optical layer; a mounting substrate including a base body, a first substrate electrode, and a second substrate electrode, the first substrate electrode and the second substrate electrode being provided on a surface of the base body to oppose the semiconductor light emitting device; a first connection member configured to electrically connect the first conductive member to the first substrate electrode; and a second connection member configured to electrically connect the second conductive member to the second substrate electrode, the light emitting unit including: a semiconductor stacked body including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, and a light emitting layer provided between the second semiconductor layer and a portion of the first semiconductor layer, the semiconductor stacked body having a first major surface on a first semiconductor layer side of the semiconductor stacked body and a second major surface on a second semiconductor layer side of the semiconductor stacked body; a first light emitting unit electrode electrically connected to the first semiconductor layer on a second major surface side; and a second light emitting unit electrode electrically connected to the second semiconductor layer on the second major surface side, the first conductive member being electrically connected to the first light emitting unit electrode and including a first columnar portion provided on the second major surface, the second conductive member being electrically connected to the second light emitting unit electrode and including a second columnar portion provided on the second major surface, the sealing member covering a side surface of the first conductive member and a side surface of the second conductive member, the optical layer being provided on the first major surface of the semiconductor stacked body, the optical layer including a wavelength conversion unit, the wavelength conversion unit being configured to absorb an emitted light emitted from the light emitting layer and emit a light having a wavelength different from a wavelength of the emitted light, a surface area of the second substrate electrode being not less than 100 times a cross-sectional area of the second columnar portion cut by a plane parallel to the second major surface.