ILLUMINATION DEVICE AND OPTICAL COMPONENT THEREOF

摘要

An illumination device includes an optical component and a light-emitting module. The optical component includes a light-transmitting body, a first optical unit, and a second optical unit. The first optical unit has a light input surface and a plurality of surrounding structures surrounding the light input surface and arranged in a pattern of concentric circles, and each surrounding structure has a first surrounding surface and a second surrounding surface. The second optical unit has a spiral structure surrounding the light output surface of the light-transmitting body and a surrounding frame surrounding the light output surface of the light-transmitting body and the spiral structure, and a relative height from a topmost surface of the spiral structure to the light output surface of the light-transmitting body is increased gradually from inner to outer. The light-emitting module is disposed under the light input surface of the first optical unit.

主权项

1. An optical component, comprising:
a light-transmitting body having a light output surface; a first optical unit disposed on a bottom side of the light-transmitting body, wherein the first optical unit has a light input surface and a plurality of surrounding structures surrounding the light input surface and arranged in a pattern of concentric circles, and each surrounding structure has a first surrounding surface and a second surrounding surface connected to the first surrounding surface; and a second optical unit disposed on a top side of the light-transmitting body, wherein the second optical unit has a spiral structure surrounding the light output surface of the light-transmitting body and a surrounding frame surrounding the light output surface of the light-transmitting body and the spiral structure, and a relative height from a topmost surface of the spiral structure to the light output surface of the light-transmitting body is increased gradually from inner to outer; wherein a main light beam generated by a light-emitting module disposed under the light input surface of the first optical unit passes the first surrounding surface of each surrounding structure and is reflected by the second surrounding surface of each surrounding structure, to form a main projection light source passing through the light output surface of the light-transmitting body.