CN114704803A - Optical system and lamp - Google Patents
Optical system and lamp Download PDFInfo
- Publication number
- CN114704803A CN114704803A CN202210337137.0A CN202210337137A CN114704803A CN 114704803 A CN114704803 A CN 114704803A CN 202210337137 A CN202210337137 A CN 202210337137A CN 114704803 A CN114704803 A CN 114704803A
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- optical
- optical part
- light
- total reflection
- reflection surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lenses (AREA)
Abstract
The invention provides an optical system and a lamp, which comprise an optical assembly and a light source assembly, wherein the optical assembly is provided with a light inlet side and a light outlet side which are arranged oppositely, the light source assembly is arranged towards the light inlet side, the optical assembly comprises a first optical part and a second optical part, the second optical part is arranged at the outer side of the first optical part, the inner side wall of the first optical part is a first total reflection surface, the inner side wall of the second optical part, which is far away from the first optical part, is a second total reflection surface, and light emitted by the light source assembly is refracted at the light outlet side after being refracted at the light inlet side and then reflected by the first total reflection surface and the second total reflection surface respectively. According to the invention, by arranging two groups of lenses and filling silica gel between the lenses and the light source component, the interface reflection of the incident surface can be eliminated, the transmittance of emergent light is effectively improved, and different light distribution angles can be realized by controlling the curvature of the total reflection surface.
Description
Technical Field
The invention relates to an optical system and a lamp, and belongs to the technical field of illumination.
Background
The existing spot lamp generally emits more energy as much as possible by controlling the curvatures of an incident surface, a total reflection surface and an exit surface, but incident light can generate interface reflection (Fresnel reflection) on the incident surface, most energy of the light is consumed, and the effective utilization rate of the light is difficult to further improve.
Accordingly, there is a need for an improved optical system and lamp to solve the above problems.
Disclosure of Invention
The invention aims to provide an optical system and a lamp to improve the transmittance of light.
In order to achieve the above object, the present invention provides an optical system, which includes an optical component and a light source component, wherein the optical component has a light-in side and a light-out side which are oppositely disposed, and the light source component is disposed toward the light-in side, the optical component includes a first optical portion and a second optical portion, the second optical portion is disposed outside the first optical portion, an inner sidewall of the first optical portion is a first total reflection surface, an inner sidewall of the second optical portion on a side away from the first optical portion is a second total reflection surface, and light emitted by the light source component is refracted on the light-in side, reflected by the first total reflection surface and the second total reflection surface, and refracted on the light-out side.
In a further improvement of the present invention, the first optical portion and the second optical portion are each trumpet-shaped, the second optical portion is provided around the outside of the first optical portion, and the first optical portion and the second optical portion are centrosymmetric with respect to the same axis.
As a further improvement of the present invention, the first optical portion and the second optical portion are both in the shape of a strip, and the second optical portion includes two portions respectively disposed on both sides of the first optical portion.
As a further improvement of the present invention, a third optical portion is further disposed between the optical assembly and the light source assembly, and light emitted by the light source assembly passes through the third optical portion and then enters the first optical portion and the second optical portion respectively.
As a further improvement of the present invention, the refractive index of the third optical portion is the same as the refractive index of the second optical portion.
As a further improvement of the present invention, the first total reflection surface and the second total reflection surface are both free curved surfaces.
In a further aspect of the present invention, the first optical section has a first incident surface on the light incident side, the second optical section has a second incident surface on the light incident side, the first optical section has a first exit surface on the light exit side, the second optical section has a second exit surface on the light exit side, the first incident surface and the second incident surface are arranged in a staggered manner, and the first exit surface and the second exit surface are on the same plane.
As a further improvement of the present invention, the first emitting surface has a limiting part extending toward the second emitting surface, the second emitting surface is correspondingly provided with a groove for accommodating the limiting part, and the limiting part is matched with the groove to relatively fix the first optical part and the second optical part.
In order to achieve the above object, the present invention further provides a lamp including the optical system as described above.
The invention has the beneficial effects that: according to the invention, by arranging two groups of lenses and filling silica gel between the lenses and the light source component, the interface reflection of the incident surface can be eliminated, the transmittance of emergent light is effectively improved, and different light distribution angles can be realized by controlling the curvature of the total reflection surface.
Drawings
Fig. 1 is a schematic diagram of a light path structure of a lamp of the present invention.
Fig. 2 is a schematic cross-sectional view of the lamp of the present invention.
FIG. 3 is a schematic cross-sectional view of a lamp according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1 to fig. 3, the present invention discloses a lamp 100, wherein an optical system for improving light transmittance is disposed in the lamp 100, the optical system includes an optical component 10, the optical component 10 is a lens structure and covers a light source 21 of the lamp 100, the light source 21 may be an led lamp bead, and the optical component 10 is configured to control light emitted by the lamp 100 to improve transmittance. For clarity of description, the following description will take the optical assembly 10 as an example applied to the luminaire 100, and will describe the specific structure of the luminaire 100 in detail.
As shown in fig. 2, the optical system includes an optical assembly 10 and a light source assembly 20, the optical assembly 10 is horn-shaped and has a light incident side and a light emitting side which are oppositely disposed, wherein the side with the smaller cross section of the optical assembly 10 is the light incident side, and the side with the larger cross section is the light emitting side. The light source assembly 20 faces the light incident side, the light source assembly 20 includes a light source 21 and a substrate 22, the light source 21 is disposed on the substrate 22 and faces the optical assembly 10, so that the light emitted from the light source 21 passes through the light incident side and is emitted from the light emitting side.
In a preferred embodiment of the present invention, the optical assembly 10 includes a first optical portion 11 and a second optical portion 12, and the first optical portion 11 and the second optical portion 12 are centrosymmetric with respect to a common axis. The second optical part 12 is formed with a cavity for accommodating the first optical part 11, the first optical part 11 is flared, a first total reflection surface 112 is formed on the inner side wall of the first optical part 11, the second optical part 12 is flared and is arranged around the outer side of the first optical part 11, and a second total reflection surface 122 is formed on the inner side wall of the second optical part 12. Preferably, the entire inner side wall of the first optical portion 11 is the first total reflection surface 112, and the entire inner side wall of the second optical portion 12 on the side away from the first optical portion 11 is the second total reflection surface 122. It will be appreciated that the cavity is also flared to conform to the outer wall of the first optic 11, and the first total reflection surface 112 is disposed between the first optic 11 and the second optic 12.
As shown in fig. 2, in another alternative embodiment of the present invention, the first optical portion 11 and the second optical portion 12 are both strip-shaped, and the first optical portion 11 and the second optical portion 12 both extend in the same direction, that is, the first optical portion 11 and the second optical portion 12 both extend in a direction normal to the cross-sectional view of the luminaire 100 in fig. 2, the second optical portion 12 includes two portions respectively disposed at two sides of the first optical portion 11, and the second optical portion 12 is left-right symmetrical with respect to the first optical portion 11, and may be disposed specifically as needed, and is not limited herein.
The first optical unit 11 has a first incident surface 111 on the light incident side, the first optical unit 11 has a first exit surface 113 on the light exit side, the second optical unit 12 has a second incident surface 121 on the light incident side, and the second optical unit 12 has a second exit surface 123 on the light exit side.
As set forth above, the light emitted from the light source assembly 20 can pass through the first optical portion 11 and the second optical portion 12, and can be divided into a first path and a second path, wherein the first path sequentially passes through the first incident surface 111 for refraction, the first total reflection surface 112 for reflection, and the first exit surface 113 for refraction, and the second path sequentially passes through the second incident surface 121 for refraction, the second total reflection surface 122 for reflection, and the second exit surface 123 for refraction. That is, the light emitted from the light source module 20 passes through the first path and the second path from the light incident side, and then exits from the light exiting side. In another embodiment of the present invention, the first exit surface 113 and the second exit surface 123 are located on the same plane, and the first incident surface 111 and the second incident surface 121 are arranged in a staggered manner.
As a preferred embodiment of the present invention, a third optical portion 13 is further disposed between the optical assembly 10 and the light source assembly 20, and the first optical portion 11, the second optical portion 12, and the third optical portion 13 are centrosymmetric with respect to a same axis. The light emitted from the light source assembly 20 passes through the third optical portion 13 and then enters the first optical portion 11 and the second optical portion 12, respectively.
Specifically, the third optical portion 13 is disposed between the light source 21 and the light incident side to fill a gap between the light source 21 and the first optical portion 11 and the second optical portion 12, so as to reduce fresnel reflection to increase the transmittance of light. Preferably, the refractive index of the third optical portion 13 is the same as the refractive index of the second optical portion 12. It is to be understood that the refractive index of the third optical portion 13 is the same as that of the second optical portion 12, and is not limited thereto as long as the refractive index is the same or close to each other. The third optical portion 13 and the second optical portion 12 may be made of the same material, and thus the refractive index of the third optical portion 13 is the same as that of the second optical portion 12, but of course, the material of the third optical portion 13 may be different from that of the second optical portion 12, and may be specifically provided as needed, and is not limited thereto.
In the above embodiment, the first optical portion 11 and the second optical portion 12 may be made of glass, including but not limited to polymethyl methacrylate (PMMA), Polycarbonate (PC) or a resin material, the first optical portion 11 and the second optical portion 12 are substantially lenses, and the third optical portion 13 may be made of silicone. When the first optical portion 11 and the second optical portion 12 are made of organic glass, since the refractive index of silicone is 1.41 and is close to that of organic glass, which is 1.489, the interface reflection (fresnel reflection) of the first incident surface 111 and the second incident surface 121 can be eliminated. Of course, in other embodiments of the present invention, the third optical portion 13 may be made of other materials, and is not limited to this, as long as it has a refractive index close to that of the first optical portion 11 and the second optical portion 12.
In another preferred embodiment of the present invention, the first total reflection surface 112 and the second total reflection surface 122 are both free curved surfaces. The angle of the emergent light can be adjusted by controlling the curvatures of the first total reflection surface 112 and the second total reflection surface 122, so that the transmittance is greatly improved to approach 100%.
As shown in fig. 1, specifically, a normal vector of any point on the first total reflection surface 112
Satisfy the requirements of
Wherein the content of the first and second substances,
the incident light before being reflected by the first total reflection surface 112 at the point,
is the emergent ray at that point, n1Is the refractive index of the first optical portion 11. Similarly, the normal vector of any point on the second total reflection surface 122
Satisfy the requirement of
Wherein the content of the first and second substances,
the incident light before being reflected by the second total reflection surface 122 at the point,
is the emergent ray at that point, n2Is the refractive index of the second optical portion 12.
By incident light
For the purpose of example only,
the vector form of (c) can be expressed as (cos θ, sin θ), where θ is the angle of the incident ray to the x-axis. According to different requirements of a user on the light distribution angle of the lamp 100, different light distribution angles such as 10 °, 24 °, 30 °, 60 ° can be set, and the direction vector of the emergent light changes accordingly. When the direction vector of the outgoing light is known, the normal vector of the first total reflection surface 112 or the second total reflection surface 122 on the specified incident light can be obtained. By specifying the coordinates of the initial point, using the mathematical concept of euler, combining the above formulas to obtain the coordinates of each point of the first total reflection surface 112 and the second total reflection surface 122, and using a free curve command to connect the coordinate points to obtain the data of the free curved surfaces of the first total reflection surface 112 and the second total reflection surface 122.
As shown in fig. 3, as another embodiment of the present invention, the first emission surface 113 has a limiting portion 114 extending toward the second emission surface 123, the second emission surface 123 is correspondingly provided with a groove for accommodating the limiting portion 114, and the limiting portion 114 is engaged with the groove to fix the first optical portion 11 and the second optical portion 12 relative to each other. Further, the luminaire 100 further includes a housing (not shown) for fixing and preventing the optical assembly 10 and the light source assembly 20 from being separated, and preventing the first optical portion 11, the second optical portion 12 and the third optical portion 13 from moving relatively to each other.
In summary, in the present invention, two groups of lenses are arranged and silica gel is filled between the lenses and the light source assembly 20, so that interface reflection of the incident surface can be eliminated, transmittance of the emergent light can be effectively improved, and different light distribution angles can be realized by controlling curvature of the total reflection surface.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. An optical system is characterized by comprising an optical assembly and a light source assembly, wherein the optical assembly is provided with a light inlet side and a light outlet side which are oppositely arranged, the light source assembly faces the light inlet side, the optical assembly comprises a first optical part and a second optical part, the second optical part is arranged on the outer side of the first optical part, the inner side wall of the first optical part is a first total reflection surface, the inner side wall of one side, away from the first optical part, of the second optical part is a second total reflection surface, and light rays emitted by the light source assembly are refracted on the light outlet side after being refracted on the light inlet side and then are respectively reflected by the first total reflection surface and the second total reflection surface.
2. The optical system of claim 1, wherein: the first optical part and the second optical part are horn-shaped, the second optical part is arranged on the outer side of the first optical part in a surrounding mode, and the first optical part and the second optical part are in central symmetry relative to the same axis.
3. The optical system of claim 1, wherein: the first optical part and the second optical part are both in a strip shape, and the second optical part comprises two parts which are respectively arranged at two sides of the first optical part.
4. The optical system according to claim 2 or 3, characterized in that: and a third optical part is arranged between the optical assembly and the light source assembly, and light rays emitted by the light source assembly respectively enter the first optical part and the second optical part after passing through the third optical part.
5. The optical system of claim 4, wherein: the refractive index of the third optical part is the same as that of the second optical part.
6. The optical system of claim 1, wherein: the first total reflection surface and the second total reflection surface are both free curved surfaces.
7. The optical system of claim 1, wherein: the first optical part is provided with a first incident surface at the light incident side, the second optical part is provided with a second incident surface at the light incident side, the first optical part is provided with a first emergent surface at the light emergent side, the second optical part is provided with a second emergent surface at the light emergent side, the first incident surface and the second incident surface are arranged in a staggered mode, and the first emergent surface and the second emergent surface are located on the same plane.
8. The optical system of claim 7, wherein: the first emergent surface is provided with a limiting part extending towards the second emergent surface, the second emergent surface is correspondingly provided with a groove for accommodating the limiting part, and the limiting part is matched with the groove so as to relatively fix the first optical part and the second optical part.
9. A luminaire comprising an optical system as claimed in any one of claims 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021112569210 | 2021-10-27 | ||
| CN202111256921.0A CN113819440A (en) | 2021-10-27 | 2021-10-27 | Optical system and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114704803A true CN114704803A (en) | 2022-07-05 |
Family
ID=78918941
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111256921.0A Withdrawn CN113819440A (en) | 2021-10-27 | 2021-10-27 | Optical system and lamp |
| CN202210337137.0A Pending CN114704803A (en) | 2021-10-27 | 2022-04-01 | Optical system and lamp |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111256921.0A Withdrawn CN113819440A (en) | 2021-10-27 | 2021-10-27 | Optical system and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN113819440A (en) |
-
2021
- 2021-10-27 CN CN202111256921.0A patent/CN113819440A/en not_active Withdrawn
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2022
- 2022-04-01 CN CN202210337137.0A patent/CN114704803A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN113819440A (en) | 2021-12-21 |
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