Illuminating device with adjustable light beams and method for assembling the same
An illuminating device with adjustable light beams and a method for assembling the same. The light-emitting units are disposed on the substrate. The optical element is disposed in the path of a light emitted by at least one of the light-emitting units. The driving unit drives a first or second set of the light-emitting units, wherein a light beam formed by light that is emitted by the first set of the light-emitting units and passes through the optical element has a different shape or projection angle from a light beam formed by light that is emitted by the second set of the light-emitting units and passes through the optical element.
1. An illuminating device with adjustable light beams, comprising:
a substrate;
multiple light-emitting units disposed on the substrate;
an optical element disposed in the path of a light emitted by at least one of the light-emitting units; and
a driving unit driving a first or second set of the light-emitting units, wherein a light beam formed by light that is emitted by the first set of the light-emitting units and passes through the optical element has a different shape or projection angle from a light beam formed by light that is emitted by the second set of the light-emitting units and passes through the optical element;
wherein the light beam formed by the light that is emitted by the first set of the light-emitting units and passes through the optical element has a different intensity from the light beam formed by the light that is emitted by the second set of the light-emitting units and passes through the optical element.
2. The illuminating device of claim 1 , wherein the light-emitting units disposed on the substrate are arranged in multiple rings.
3. The illuminating device of claim 2 , wherein the light-emitting units arranged in the innermost one of the rings are defined as the first set thereof and project light in an angle less than a preset angle.
4. The illuminating device of claim 2 , wherein the light-emitting units arranged in the outermost one of the rings are defined as the second set thereof and project light in an angle greater than a preset angle.
5. The illuminating device of claim 1 , wherein the light-emitting units disposed on the substrate are arranged in a rectangle.
6. The illuminating device of claim 1 , wherein the optical element has an optical surface containing a sphere or not containing a sphere, a Fresnel optical surface or a microstructured optical surface.
7. The illuminating device of claim 1 , wherein the optical element comprises a lens, reflector or refraction plate.
8. The illuminating device of claim 7 , wherein the reflector comprises a parabolic reflector, an elliptical reflector or a hyperboloid reflector.
9. The illuminating device of claim 7 , wherein the refraction plate has a teeth shape, a trapezoidal shape, a pillar shape or a globe shape.
10. A method for assembling an illuminating device, comprising:
providing a substrate;
disposing multiple light-emitting units on the substrate;
disposing an optical element in the path of a light emitted by at least one of the light-emitting units; and
selectively driving a first or second set of the light-emitting units using a driving unit, wherein a light beam formed by light that is emitted by the first set of the light-emitting units and passes through the optical element has a different shape or projection angle from a light beam formed by light that is emitted by the second set of the light-emitting units and passes through the optical element;
wherein the light beam formed by the light that is emitted by the first set of the light-emitting units and passes through the optical element has a different intensity from the light beam formed by the light that is emitted by the second set of the light-emitting units and passes through the optical element.
11. The method of claim 10 , wherein the light-emitting units disposed on the substrate are arranged in multiple rings.
12. The method of claim 11 , wherein the light-emitting units arranged in the innermost one of the rings are defined as the first set thereof and project light in an angle less than a preset angle.
13. The method of claim 11 , wherein the light-emitting units arranged in the outermost one of the rings are defined as the second set thereof and project light in an angle greater than a preset angle.
14. The method of claim 10 , wherein the light-emitting units disposed on the substrate are arranged in a rectangle.
15. The method of claim 10 , wherein the optical element has an optical surface containing a sphere or not containing a sphere, a Fresnel optical surface or a microstructured optical surface.
16. The method of claim 10 , wherein the optical element comprises a lens, a reflector or a refraction plate.
17. The method of claim 16 , wherein the reflector comprises a parabolic reflector, an elliptical reflector or a hyperboloid reflector.
18. The method of claim 16 , wherein the refraction plate has a teeth shape, a trapezoidal shape, a pillar shape or a globe shape.