Light source unit and projector with light source apparatus
A light source unit includes a light emitting element, a substrate on which the light emitting surface is disposed, a sealing portion which transmits light from the light emitting surface, and a collimator lens having an inverted truncated hexagonal pyramid shape for forming light emitted from the sealing portion into a bundle of parallel rays of light, the sealing portion having two or more convexly curved surfaces which project in a direction in which light is emitted therefrom.
1. A light source unit comprising:
a light emitting element;
a substrate on which the light emitting element is disposed;
a sealing portion which transmits light of the light emitting element; and
a collimator lens for forming light emitted from the sealing portion into a bundle of parallel rays of light for emission therefrom,
wherein the sealing portion has two or more convexly curved surfaces which project in a direction in which light is emitted therefrom,
wherein the collimator lens has an inverted truncated hexagonal pyramid shape, and
wherein a light emitting surface of the collimator lens comprises a flat surface portion which is formed at a center thereof in such a manner as to be parallel to a bottom surface of the collimator lens, and an inclined surface formed around a perimeter of the flat surface portion, whereby the collimator lens comprises an inverted truncated hexagonal cone-shaped top portion which is recessed at a center thereof.
2. The light source unit according to claim 1 , wherein the sealing portion is formed into a shape of a body of revolution.
3. The light source unit according to claim 1 , wherein the sealing portion comprises a dome-shaped sealing material and a lens cap, and
wherein the lens cap has a shape of a body of revolution having two or more convexly curved surfaces which project in a direction in which light is emitted therefrom, has an opening portion for accommodating therein the sealing material in a bottom portion thereof, and is bonded to the sealing material at the opening portion thereof.
4. A light source apparatus comprising:
a plurality of light source units which are disposed adjacent to each other, the plurality of light source units each comprising a light emitting element, a substrate on which the light emitting element is disposed, a sealing portion which transmits light of the light emitting element, and a collimator lens which forms light emitted from the sealing portion into a bundle of parallel rays of light for emission therefrom,
wherein the sealing portions each have two or more convexly curved surfaces which project in a direction in which light is emitted therefrom,
wherein the collimator lens is formed into an inverted truncated hexagonal pyramid shape, and
wherein a light emitting surface of the collimator lens comprises a flat surface portion which is formed at a center thereof in such a manner as to be parallel to a bottom surface of the collimator lens, and an inclined surface formed around a perimeter of the flat surface portion, whereby the collimator lens comprises an inverted truncated hexagonal cone-shaped top portion which is recessed at a center thereof.
5. The light source apparatus according to claim 4 , wherein the sealing portion is formed into a shape of a body of revolution.
6. The light source apparatus according to claim 4 , wherein the sealing portion comprises a dome-shaped sealing material and a lens cap, and
wherein the lens cap has a shape of a body of revolution having two or more convexly curved surfaces which project in a direction in which light is emitted therefrom, has an opening portion for accommodating therein the sealing material in a bottom portion thereof, and is bonded to the sealing material at the opening portion thereof.