Light-emitting apparatus with optical element and method of manufacturing the same

1. A light-emitting apparatus comprising:

a plurality of light-emitting elements;

a substrate on which the plurality of light-emitting elements are mounted in a mounted region and a pair of electrodes for supplying power to the plurality of light-emitting elements is arranged around the mounted region;

a sealing resin that contains a phosphor excited by emission light from the plurality of light-emitting elements and seals the plurality of light-emitting elements on the mounted region; and

an optical element that is placed to cover the sealing resin and collects light emitted from the plurality of light-emitting elements through the sealing resin,

wherein the optical element comprises:

a bottom surface in contact with a flat region on the substrate between the pair of electrodes and the sealing resin, the bottom surface being provided with a lower concave portion in which the sealing resin is housed;

a lateral surface inclined so as that the optical element becomes wider toward an upper end thereof, wherein the lateral surface totally reflects light emitted laterally from the plurality of light-emitting elements through the sealing resin vertically upward; and

an upper surface that is larger than the bottom surface and includes an upper curved surface on which light emitted obliquely upward from the plurality of light-emitting elements through the sealing resin is refracted vertically upward.

2. The light-emitting apparatus according to claim 1 , wherein

a connector is connected to the pair of electrodes, and

the optical element is placed on a flat annular region between the connector and the sealing resin on the substrate.

3. The light-emitting apparatus according to claim 1 , wherein the sealing resin contains a plurality of kinds of phosphors and is hardened in the state where the phosphors are precipitated in the layered form for every kind.

4. The light-emitting apparatus according to claim 3 , wherein the sealing resin contains a green phosphor and a red phosphor as the plurality of kinds of phosphors, and has a first layer that mainly contains the green phosphor, a second layer that mainly contains the red phosphor, and a third layer having lower concentrations of the green phosphor and the red phosphor than the first layer and the second layer, in this order from a side close to the substrate.

5. The light-emitting apparatus according to claim 1 , wherein

the plurality of light-emitting elements are a plurality of LED elements, and

a percentage of an area of the plurality of LED elements in the mounted region covered with the sealing resin is 30% to 50%.

6. The light-emitting apparatus according to claim 1 , wherein a lower curved surface that protrudes downward is formed on an upper end of the lower concave portion of the optical element.

7. The light-emitting apparatus according to claim 1 , wherein

an upper concave portion is provided on the upper surface of the optical element; and

the upper curved surface is formed on a lower end of the upper concave portion.