Reflector, illuminator and the use thereof
View Patent ↗A reflector including pairs of reflecting pieces, each pair of reflecting pieces includes at least one reflecting unit, each reflecting unit including a first reflecting portion, a second reflecting portion, and a first fixing portion and a second fixing portion whose bottom ends are respectively connected to the first reflecting portion and the second reflecting portion. The first fixing portion is located on the side of the first reflecting portion that is opposed to an optical center of the reflecting unit, and the second fixing portion is located on the side of the second reflecting portion that is opposed to the optical center of the reflecting unit.
1. A reflector, comprising;
pairs of reflecting pieces, wherein each pair of reflecting pieces comprises at least one reflecting unit, each reflecting unit comprising:
a first reflecting portion;
a second reflecting portion; and
a first fixing portion and a second fixing portion whose bottom ends are respectively connected to the first reflecting portion and the second reflecting portion,
wherein:
the first fixing portion is located on the side of the first reflecting portion that is opposed to an optical center of the reflecting unit,
the second fixing portion is located on the side of the second reflecting portion that is opposed to the optical center of the reflecting unit, and
the first reflecting portion and the second reflecting portion have the shape of an arc curved surface which taperedly extends from the bottom end thereof to the top end and form an opening, such that one part of light emitted from a light source located at the optical center inside the reflecting unit passes through the opening directly and the other part of light passes through the opening after reflected by the reflecting portions.
2. The reflector according to claim 1 , wherein the arc curved surface shape is a free-form curved surface shape.
3. The reflector according to claim 2 , wherein the free-form curved surface is formed by free-form curves on the plane groups through an optical axis, wherein the optical axis is the axis passing through the optical center of the reflecting unit.
4. The reflector according to claim 2 , wherein the free-form curved surface is formed by straight lines on the plane groups through an optical axis, wherein the optical axis is the axis passing through the optical center of the reflecting unit and the straight lines are aligned along a free-form curve so as to form the free-form curved surface.
5. The reflector according to claim 1 , wherein each pair of reflecting pieces comprises a plurality of reflecting units, with the first fixing portions of the plurality of reflecting units connected with one another and the second fixing portions of the plurality of reflecting units connected with one another, and the plurality of reflecting units are arranged such that the light sources located at the optical centers of the reflecting units are arranged in a line.
6. The reflector according to claim 1 , wherein the reflector comprises a plurality pairs of reflecting pieces arranged such that the light sources located at the optical centers of the reflecting units are arranged in parallel lines or in a line.
7. The reflector according to claim 1 , wherein the openings of the reflecting portions can be any angle from 30° to 120°.
8. An illuminator comprising;
a heat sinking plate;
a base plate;
a light source; and
a reflector comprising:
pairs of reflecting pieces, wherein each pair of reflecting pieces comprises at least one reflecting unit, each reflecting unit comprising:
a first reflecting portion;
a second reflecting portion; and
a first fixing portion and a second fixing portion whose bottom ends are respectively connected to the first reflecting portion and the second reflecting portion,
wherein:
the first fixing portion is located on the side of the first reflecting portion that is opposed to an optical center of the reflecting unit,
the second fixing portion is located on the side of the second reflecting portion that is opposed to the optical center of the reflecting unit, and
the first reflecting portion and the second reflecting portion have the shape of an arc curved surface which taperedly extends from the bottom end thereof to the top end and form an opening,
wherein the heat sinking plate is fixed to the base plate, the first fixing portion and the second fixing portion are fixed to the heat sinking plate or the base plate, and
wherein the light source is fixed to the heat sinking plate and located at the optical center of the reflecting unit, such that one part of light emitted from the light source passes through the opening directly and the other part of light passes through the opening after reflected by the first reflecting portion and the second reflecting portion.
9. The illuminator according to claim 8 , wherein the illuminator further comprises a transparent casing fixed to the base plate or the heat sinking plate for accommodating the light source and the reflector.
10. The illuminator according to claim 8 , wherein the light source is a LED lamp.
11. The illuminator according to claim 8 , wherein the illuminator is used for road illumination, tunnel illumination, or prolate shape region illumination.
12. The reflector according to claim 2 , wherein each pair of reflecting pieces comprises a plurality of reflecting units, with the first fixing portions of the plurality of reflecting units connected with one another and the second fixing portions of the plurality of reflecting units connected with one another, and the plurality of reflecting units are arranged such that the light sources located at the optical centers of the reflecting units are arranged in a line.
13. The reflector according to claim 2 , wherein the reflector comprises a plurality pairs of reflecting pieces arranged such that the light sources located at the optical centers of the reflecting units are arranged in parallel lines or in a line.
14. The reflector according to claim 2 , wherein the openings of the reflecting portions can be any angle from 30° to 120°.
15. The reflector according to claim 3 , wherein each pair of reflecting pieces comprises a plurality of reflecting units, with the first fixing portions of the plurality of reflecting units connected with one another and the second fixing portions of the plurality of reflecting units connected with one another, and the plurality of reflecting units are arranged such that the light sources located at the optical centers of the reflecting units are arranged in a line.
16. The reflector according to claim 3 , wherein the reflector comprises a plurality pairs of reflecting pieces arranged such that the light sources located at the optical centers of the reflecting units are arranged in parallel lines or in a line.
17. The reflector according to claim 3 , wherein the openings of the reflecting portions can be any angle from 30° to 120°.
18. The reflector according to claim 4 , wherein each pair of reflecting pieces comprises a plurality of reflecting units, with the first fixing portions of the plurality of reflecting units connected with one another and the second fixing portions of the plurality of reflecting units connected with one another, and the plurality of reflecting units are arranged such that the light sources located at the optical centers of the reflecting units are arranged in a line.
19. The reflector according to claim 4 , wherein the reflector comprises a plurality pairs of reflecting pieces arranged such that the light sources located at the optical centers of the reflecting units are arranged in parallel lines or in a line.
20. The reflector according to claim 4 , wherein the openings of the reflecting portions can be any angle from 30° to 120°.