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CN-121993761-A - Light distribution assembly and lamp

CN121993761ACN 121993761 ACN121993761 ACN 121993761ACN-121993761-A

Abstract

The invention provides a light distribution assembly, which comprises a first optical piece, a second reflection surface and a light emergent part, wherein the first optical piece is provided with a light emergent cavity, the light emergent cavity comprises a first reflection surface, a light emergent part and a second reflection surface, the first reflection surface is positioned on the peripheral surface of the light emergent side of the light emergent cavity and is used for totally reflecting light rays irradiated to the first reflection surface to a light source, the second reflection surface is positioned on the top of the light emergent side of the light emergent cavity and is used for totally reflecting the light rays irradiated to the second reflection surface to the light source, and the light emergent part is arranged between the first reflection surface and the second reflection surface and is used for emergent the light rays irradiated to the light source. The light distribution assembly and the lamp have small light emitting angle and uniform light emitting.

Inventors

  • Ruan Peizhong

Assignees

  • 苏州欧普照明有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (10)

  1. 1. The light distribution assembly is characterized by comprising a first optical piece (11), wherein the first optical piece (11) is provided with a light inlet cavity (115), the light inlet cavity (115) comprises a first reflecting surface (111), a light outlet part (112) and a second reflecting surface (113), The first reflecting surface (111) is positioned on the peripheral surface of the light incidence side of the light incidence cavity (115) and is configured to totally reflect the light rays irradiated to the first reflecting surface (111) to the light source (2); The second reflecting surface (113) is positioned at the top of the light emergent side of the light incident cavity (115) and is configured to totally reflect the light rays irradiated to the second reflecting surface (113) to the light source (2); The light emitting unit (112) is provided between the first reflecting surface (111) and the second reflecting surface (113), and is configured to emit light rays irradiated thereto.
  2. 2. The light distribution assembly according to claim 1, wherein the first optical member (11) has a convolution structure, and/or the first reflecting surface (111), the second reflecting surface (113), and the light emitting portion (112) are located on the same hemispherical surface.
  3. 3. The light distribution assembly according to claim 1, wherein the light exit portion (112) is a light exit opening or a lens provided on the first optical member (11).
  4. 4. The light distribution assembly according to claim 1, further comprising a second optical member (12), wherein the second optical member (12) comprises a third reflecting surface (123), and a mating end (121) and an opening end (122) at two ends of the third reflecting surface (123), a containing cavity (124) is formed around the third reflecting surface (123), the light emergent portion (112) and the second reflecting surface (113) are both located in the containing cavity (124), and the light emitted by the light emergent portion (112) is reflected by the third reflecting surface (123) and then is emitted toward the opening end (122).
  5. 5. The light distribution assembly according to claim 4, characterized in that the mating end (121) is clamped with the first reflecting surface (111).
  6. 6. The light distribution assembly according to claim 4, characterized in that the mating end (121) has a smaller caliber than the opening end (122).
  7. 7. The light distribution assembly according to claim 4, further comprising a light mixing member (13), wherein the light mixing member (13) is disposed on a side of the open end (122) facing away from the mating end (121) and covers the open end (122) and is configured to mix light reflected from the second optical member (12).
  8. 8. The light distribution assembly according to claim 4, further comprising a light shielding member (14), wherein the light shielding member (14) comprises an annular light shielding wall (143), a light emitting cavity (144) is formed by surrounding the light shielding wall (143), the light emitting cavity (144) comprises a light inlet end (141) and a light outlet end (142) which are oppositely arranged, the light inlet end (141) is close to the open end (122), and the caliber of the light inlet end (141) is larger than that of the light outlet end (142).
  9. 9. The light distribution assembly according to claim 1, wherein the first optical member (11) has a first height and the light emitting portion (112) has a second height in a vertical direction, and a ratio between the first height and the second height ranges from 0.45 to 0.55.
  10. 10. A lamp, characterized by comprising a light source (2), a housing (3) and a light distribution assembly according to any one of claims 1-9.

Description

Light distribution assembly and lamp Technical Field The invention relates to the technical field of illumination, in particular to a light distribution assembly and a lamp. Background In the technical field of illumination, light emitted by a light source often needs to be distributed through a specific optical element, so as to realize effective distribution and uniform distribution of the light, thereby achieving the expected illumination effect. Most of the traditional light distribution modes only have reflecting cups or lens structures, but the problems of uneven light distribution, serious glare, low light energy utilization rate and the like exist in the modes. For example, light from the bottom and middle portions is often difficult to effectively utilize, resulting in reduced light efficiency, and certain machining errors may occur in the reflector cup during the machining process, resulting in light scattering during the reflection process, thereby creating secondary spots, reducing the comfort and aesthetics of the lighting effect. Disclosure of Invention The invention aims to provide a light distribution assembly and a lamp with small light emitting angle and uniform light emitting. In order to achieve the above object, the present invention provides a light distribution assembly comprising a first optical member having an light entrance cavity including a first reflecting surface, a light exit portion and a second reflecting surface, A first reflection surface located on the peripheral surface of the light incident side of the light incident cavity and configured to totally reflect the light irradiated to the first reflection surface to the light source; The second reflecting surface is positioned at the top of the light emitting side of the light entering cavity and is configured to totally reflect the light rays irradiated to the second reflecting surface to the light source; And a light emitting unit disposed between the first reflecting surface and the second reflecting surface and configured to emit light irradiated thereto. Optionally, the first optical element is a convolution structure, and/or the first reflecting surface, the second reflecting surface and the light emitting part are located on the same hemispherical surface. Optionally, the light emitting portion is a light emitting opening or a lens disposed on the first optical member. Optionally, the optical device further comprises a second optical element, the second optical element comprises a third reflecting surface, and a matching end and an opening end at two ends of the third reflecting surface, the third reflecting surface is surrounded to form a containing cavity, the light emitting part and the second reflecting surface are both positioned in the containing cavity, and the light emitted by the light emitting part is reflected by the third reflecting surface and then emitted towards the opening end. Optionally, the mating end is clamped with the first reflecting surface. Optionally, the mating end has a smaller caliber than the opening end. Optionally, the optical device further includes a light mixing element, where the light mixing element is disposed on a side of the open end facing away from the mating end and covers the open end, and is configured to mix light reflected by the second optical element. Optionally, the light shielding device further comprises a light shielding piece, the light shielding piece comprises an annular light shielding wall, the light shielding wall is surrounded to form a light emitting cavity, the light emitting cavity comprises a light inlet end and a light emitting end which are oppositely arranged, the light inlet end is close to the opening end, and the caliber of the light inlet end is larger than that of the light emitting end. Optionally, in the vertical direction, the first optical piece has a first height, the light emitting portion has a second height, and the ratio between the first height and the second height ranges from 0.45 to 0.55. A lamp comprises a light source, a shell and the light distribution assembly. Compared with the prior art, the technical scheme of the invention has the following beneficial effects: The light distribution assembly is characterized in that the first reflecting surface, the second reflecting surface and the light emitting part are arranged between the first reflecting surface and the second reflecting surface, so that light rays irradiated to the peripheral surface and the top can be totally reflected to the light source by the first reflecting surface and the second reflecting surface, robo reflection is formed on the light emitting surface of the light source, the reflected light rays are directly emitted from the light emitting part by the light superposition light source, otherwise, the light rays which are possibly scattered originally are continuously reflected in the light entering cavity, the light rays are redirected and emitted, the light