CN115059897A - Light guide structure, optical system and car light - Google Patents
Light guide structure, optical system and car light Download PDFInfo
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- CN115059897A CN115059897A CN202210747304.9A CN202210747304A CN115059897A CN 115059897 A CN115059897 A CN 115059897A CN 202210747304 A CN202210747304 A CN 202210747304A CN 115059897 A CN115059897 A CN 115059897A
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- light
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- light guide
- optical
- optical surface
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- 230000003287 optical effect Effects 0.000 title claims abstract description 113
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/247—Light guides with a single light source being coupled into the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
-
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention provides a light guide structure which comprises a light source, a first thick-wall light guide and a second thick-wall light guide, wherein the first thick-wall light guide comprises a light incident surface, a collimator and a first optical surface, and the first optical surface forms a first light emitting surface and a second light emitting surface which form an included angle; the second thick-walled light guide comprises a second optical surface, a bottom surface, an upper surface and a third optical surface, wherein the second optical surface comprises a first light incident surface and a second light incident surface which form an included angle; the first optical surface and the second optical surface are oppositely arranged to form an air groove; the light source is arranged below the first thick-wall light guide, light rays enter the first thick-wall light guide through the light inlet face, the light rays are collimated by the collimator and then exit the first thick-wall light guide through the first optical face, the light rays enter the second thick-wall light guide through the second optical face after passing through the air groove, the light rays are transmitted in the second thick-wall light guide, and finally the light rays exit through the upper surface and the third optical face. The light guide structure can realize uniform light emission in different directions, and meets the actual requirements.
Description
Technical Field
The invention relates to the technical field of vehicle lamps, in particular to a light guide structure, an optical system and a vehicle lamp.
Background
The vehicle industry develops at a high speed, and the vehicle lamp is one of important parts, not only can be matched with other driving functions of a vehicle, but also plays a technical role in beauty. The design requirement of car light homoenergetic realizes that the light-emitting is even on the angle of difference to satisfy functional demand and pleasing to the eye demand.
In the prior art, a thick-wall light guide is usually used as a medium for collecting and transmitting light in a car lamp, but the injection molding process of the thick-wall light guide has obvious influence on the final light transmission effect, and the light diffusion effect is not ideal. Therefore, in an actual production process, in order to satisfy both functional and aesthetic requirements, a plurality of light sources are usually used and distributed at different positions to realize the light emission of the vehicle lamp in different directions. However, the use of multiple light sources (e.g., LED bulbs) at the same time may result in a vehicle lamp that is not easy to dissipate heat, and may be costly and unable to meet practical requirements.
Disclosure of Invention
In order to reduce the production cost, improve the heat dissipation effect of the car light and realize uniform light mixing in multiple directions, the invention aims to provide a light guide structure, which comprises at least one light source for emitting light, a first thick-wall light guide and a second thick-wall light guide, wherein the first thick-wall light guide comprises a light incident surface, a collimator and a first optical surface, and the first optical surface comprises a first light emitting surface and a second light emitting surface which form a first included angle therebetween; the second thick-walled light guide comprises a second optical surface, a bottom surface, an upper surface and a third optical surface, and the second optical surface comprises a first light incident surface and a second light incident surface which form a second included angle therebetween; the first optical surface and the second optical surface are oppositely arranged, and a hollow air groove is formed between the first optical surface and the second optical surface; the light source is arranged below the first thick-walled light guide, the light rays enter the first thick-walled light guide through the light inlet surface, are collimated by the collimator and then exit the first thick-walled light guide through the first optical surface, the light rays enter the second thick-walled light guide through the second optical surface after passing through the air groove, the light rays are transmitted in the second thick-walled light guide, and the light rays exit through the upper surface and the third optical surface.
Preferably, the first optical surface is convex along the light emitting direction, and the first included angle ranges from 186 degrees to 210 degrees; the second optical surface is concave along the incident direction of the light ray, and the range of the second included angle is 186-210 degrees.
Preferably, the light ray emitting direction is an X-axis direction, the vertical direction of the light incident surface is a Z-axis direction, an included angle between the first optical surface and the Y-axis direction is a third included angle, and the third included angle is 0-15 degrees; the included angle between the second optical surface and the Y-axis direction is a fourth included angle, and the fourth included angle is 0-15 degrees.
Preferably, the bottom surface is provided with an optical tooth for reflecting light rays entering the second thick-walled light guide through the second optical surface, and the light rays are emitted through the upper surface after being reflected by the optical tooth.
Preferably, the light sources include two or more, and the collimators correspond to the light sources one to one.
Preferably, the first optical surface and the second optical surface are provided with optical patterns.
Preferably, the first thick-walled light guide and the second thick-walled light guide are integrally formed, and the air groove is located between the first thick-walled light guide and the second thick-walled light guide.
In another aspect of the invention there is provided an optical system comprising a light guiding structure as described in any above and a PCBA board.
Preferably, the light source is located on the PCBA board.
In another aspect of the invention, there is provided a vehicle lamp including the optical system as described above.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the light path is redistributed by utilizing the optical patterns and the specific thick-wall light guide structure, so that the light mixing effect is excellent, the multi-angle lighting of the molding surface (namely the light emitting surface) is realized, and the actual use requirement of the car lamp is met;
2. can only use a PCBA board, can realize making the even lighting of profile, effective reduction in production cost practices thrift the inside design space of car light, the car light heat dissipation of being convenient for.
Drawings
FIG. 1 is a cross-sectional view of a light guide structure in accordance with an embodiment of the present invention;
FIG. 2 is a diagram of the optical path within the light guide structure of FIG. 1;
FIG. 3 is a schematic diagram of a first optical surface of an optical system in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a first optical surface of another optical system according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of the light guide structure of the embodiment of FIG. 4;
FIG. 6 is a bottom view of another light guiding structure consistent with an embodiment of the present invention;
FIG. 7 is a schematic view of a light guide structure in the embodiment of FIG. 6;
FIG. 8 is a side view of the light guiding structure of the embodiment of FIG. 6;
FIG. 9 is a schematic diagram of an optical structure according to an embodiment of the present invention.
Reference numerals are as follows:
10-a light source;
21-light incident surface, 22-collimator, 23-first optical surface, 231-first light emitting surface, 232-second light emitting surface;
31-second optical surface, 311-first light-in surface, 312-second light-in surface, 32-bottom surface, 33-upper surface, 34-third optical surface;
40-air tank;
50-PCBA board;
alpha-a first angle, beta-a second angle, gamma-a third angle.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another.
Fig. 1 is a cross-sectional view of a light guide structure according to an embodiment of the present invention, as shown in the drawing, the light guide structure in the embodiment includes at least one light source 10, a first thick-walled light guide and a second thick-walled light guide, wherein the first thick-walled light guide includes a light incident surface 21 at the bottom, a collimator 22 at one end, and a first optical surface 23, and the first optical surface 23 includes a first light emitting surface 231 and a second light emitting surface 232 having a first included angle α therebetween.
The second thick-walled light guide comprises a second optical surface 31, a bottom surface 32 at the bottom, an upper surface 33 and a third optical surface 34 at the other end, the second optical surface 31 comprising a first light incident surface 311 and a second light incident surface 312 with a second included angle β therebetween.
The first optical surface 23 and the second optical surface 31 are disposed opposite to each other, and the first optical surface 23 and the second optical surface 31 form a hollow air groove 40.
For convenience of description, the light emitting direction is taken as an X-axis direction, and the vertical direction of the light incident surface 21 is taken as a Z-axis direction. Unlike the conventional design, the two optical surfaces are respectively designed by using a hollow air slot 40 in the present embodiment, wherein the first optical surface 23 scatters the collimated light in the X-axis direction, and then further scatters the collimated light through the second optical surface 31, and mixes the light in the second thick-walled light guide, thereby realizing uniform light extraction from the upper surface 33 and the third optical surface 34. Also, the air slot 40 is beneficial for mitigating heat dissipation problems inside the vehicle lamp.
It will be appreciated that the collimator 22 in the present application may be any collimator 22 commonly used in the art, and may be configured to provide collimation, i.e., to collimate light entering the first thick-walled light guide along the X-axis.
Fig. 2 is a schematic view of a propagation path of light in the light guide structure in this embodiment. As can be seen from fig. 2, the light source 10 is disposed below the first thick-walled light guide, and emits light rays, the light rays enter the first thick-walled light guide through the light entrance surface, are collimated by the collimator 22, and then exit the first thick-walled light guide through the first optical surface 23, the light rays pass through the air groove 40, then enter the second thick-walled light guide through the second optical surface 31, the light rays propagate in the second thick-walled light guide, and part of the light rays are reflected by the bottom surface 32, and finally exit the light rays through the upper surface 33 and the third optical surface 34. Preferably, in other embodiments, in order to enhance the scattering effect, an optical tooth may be disposed on the bottom surface 32 for reflecting the light entering the second thick-walled light guide through the second optical surface 31, and the light exits through the upper surface 33 after being reflected by the optical tooth, or exits the second thick-walled light guide through the third optical surface 34.
The first optical surface 23 includes a first light emitting surface 231 and a second light emitting surface 232 having a first included angle α therebetween, and the second optical surface 31 includes a first light incident surface 311 and a second light incident surface 312 having a second included angle β therebetween. The first optical surface 23 and the second optical surface 31 are disposed opposite to each other, and the first included angle α and the second included angle β are disposed to ensure that all light emitted from the first optical surface 23 can enter the second optical surface 31, thereby ensuring the efficiency of light propagation.
In a preferred embodiment, the first included angle α and the second included angle β are obtuse angles, which facilitates demolding during the manufacturing process. Moreover, by integrating the transmission efficiency of the light, the design space inside the car light, and the light emitting effect of the light after being uniformly mixed by the second optical surface 31, the included angle between the first light incident surface 311 and the first light emitting surface 231 and the Z-axis direction is 3 to 15 °, that is, the numerical range of the first included angle α and the second included angle β is 186 to 210 °. It can be understood that, in an actual production process, because a joint between the first light emitting surface 231 and the second light emitting surface 232 cannot be a sharp corner due to a mold, the first light emitting surface 231 and the second light emitting surface 232 are usually connected by a plane with a thickness, and the first light incident surface 311 and the second light incident surface 312 are also connected by a plane with a thickness. It is understood that in order to enhance the effect of scattering light by the first optical surface 23 and the second optical surface 31, optical patterns may be disposed on the first optical surface 23 and the second optical surface 31, and the specific shape of the optical patterns may be vertical stripes or dermatoglyphs. In addition, the third optical surface 34 is a molding surface, and the specific shape thereof is determined according to the actual aesthetic design requirement, and is not limited to a specific shape.
As shown in fig. 3, which is a partial schematic view of the first optical surface 23 in the embodiment, the first light emitting surface 231 and the second light emitting surface 232 of the first optical surface 23 form a first included angle α, and the included angle with the Y-axis direction is 0 °. In other embodiments, as shown in fig. 4, a third included angle γ is formed between the first light-emitting surface 231 and the second light-emitting surface 232 and the Y-axis direction, and the size of the third included angle γ can be adjusted according to the actual light-emitting requirement, and the preferred range is 0 to 15 °. Similarly, the second optical surface 31 forms a fourth angle with the Y-axis direction, and the preferred range is 0 to 15 °.
In addition, in the present embodiment, as shown in fig. 4, the first light emitting surface 231 and the second light emitting surface 232 are both provided with optical patterns, i.e. a plurality of protrusions or ribs sequentially connected as shown in the figure; the first light incident surface 311 and the second light incident surface 312 each include a plurality of concave arcs connected in sequence.
In another embodiment according to the invention, as shown in fig. 5, the light guiding structure comprises four light sources 10, with four collimators 22 being provided. In other embodiments, the number of the light sources 10 may be other depending on the actual requirements of the lamp brightness and the interior of the lamp, and the invention is not limited thereto. Fig. 6 and fig. 7 are a schematic view and a side view of the light guide structure in this embodiment, respectively. It can be observed that in the present embodiment, the first thick-walled light guide is integrally formed with the second thick-walled light guide, and the air groove 40 is disposed inside the integrally formed thick-walled light guide, and is a hollow groove-shaped structure, which is beneficial for heat dissipation inside the vehicle lamp, i.e. the first thick-walled light guide and the second thick-walled light guide are integrally formed, and the air groove 40 is located between the first thick-walled light guide and the second thick-walled light guide. It is understood that, in other embodiments, the first thick-walled light guide and the second thick-walled light guide may be formed by splicing two single thick-walled light guide structures, and the specific connection manner is not limited herein, and only the light propagation path in the present invention is satisfied.
Fig. 8 is a schematic diagram of an optical system including the light guide structure in the present embodiment, and further includes a PCBA disposed below the light guide structure, and the four light sources 10 are all disposed on the PCBA board 50. As described above, if uniform light mixing is required to be achieved in both the X-axis direction and the Z-axis direction, the light sources 10 are generally required to be placed in different directions, and thus a plurality of PCBA boards 50 are required to be designed, which not only meets high requirements for the design of the internal space of the vehicle lamp, but also is not beneficial to alleviating the heat dissipation problem inside the vehicle lamp, and reduces the service life of the vehicle lamp. By using a single PCBA board 50, the production cost can be effectively reduced, and the internal space of the vehicle lamp can be saved.
In addition, an embodiment of the present invention provides a vehicle lamp, which includes the above optical structure, and can simultaneously implement uniform light mixing in the X-axis and Z-axis directions, and can cooperate with other functions of a vehicle. The technical features of the car light are the same as those of the light guide structure and the optical structure, and the invention is not repeated herein.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A light guide structure comprising at least one light source (10) emitting light, a first thick-walled light guide and a second thick-walled light guide, wherein,
the first thick-walled light guide comprises a light incident surface (21), a collimator (22) and a first optical surface (23), and the first optical surface (23) comprises a first light emitting surface (231) and a second light emitting surface (232) which form a first included angle therebetween;
the second thick-walled light guide comprises a second optical surface (31), a bottom surface (312), an upper surface (33) and a third optical surface (34), the second optical surface (31) comprises a first light incident surface (311) and a second light incident surface (312) which form a second included angle therebetween;
the first optical surface (23) and the second optical surface (31) are oppositely arranged, and a hollow air groove (40) is formed between the first optical surface (23) and the second optical surface (31);
the light source (10) is disposed below the first thick-walled light guide, the light ray enters the first thick-walled light guide through the light entrance surface (21), is collimated by the collimator (22) and exits the first thick-walled light guide through the first optical surface (23), the light ray enters the second thick-walled light guide through the second optical surface (31) after passing through the air groove (40), propagates in the second thick-walled light guide, and exits through the upper surface (33) and the third optical surface (34).
2. The light guiding structure of claim 1,
the first optical surface (23) is convex along the light emitting direction, and the range of the first included angle is 186-210 degrees;
the second optical surface (31) is concave along the light incidence direction, and the range of the second included angle is 186-210 degrees.
3. The light guiding structure of claim 2,
the emergent direction of the light rays is the X-axis direction, the vertical direction of the light incident surface is the Z-axis direction,
the included angle between the first optical surface (23) and the Y-axis direction is a third included angle, and the third included angle is 0-15 degrees;
the included angle between the second optical surface (31) and the Y-axis direction is a fourth included angle, and the fourth included angle is 0-15 degrees.
4. The light guiding structure of claim 3,
the bottom surface (312) is provided with optical teeth for reflecting light rays entering the second thick-walled light guide via the second optical surface (31), the light rays being emitted through the upper surface (33) after being reflected by the optical teeth.
5. The light guiding structure of claim 1,
the light sources (10) include two or more, and the collimators (22) correspond to the light sources one by one.
6. The light guiding structure of claim 1,
the first optical surface (23) and the second optical surface (31) are provided with optical patterns.
7. The light guiding structure of claim 1, wherein the first thick-walled light guide is integrally formed with the second thick-walled light guide, the air slot (40) being located between the first thick-walled light guide and the second thick-walled light guide.
8. An optical system, comprising,
a light guiding structure and a PCBA plate (50) as claimed in any of claims 1 to 7.
9. The optical system of claim 7,
the light source (10) is located on the PCBA board (50).
10. A vehicular lamp characterized by comprising the optical system according to any one of claims 8 and 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210747304.9A CN115059897A (en) | 2022-06-29 | 2022-06-29 | Light guide structure, optical system and car light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210747304.9A CN115059897A (en) | 2022-06-29 | 2022-06-29 | Light guide structure, optical system and car light |
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| Publication Number | Publication Date |
|---|---|
| CN115059897A true CN115059897A (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210747304.9A Pending CN115059897A (en) | 2022-06-29 | 2022-06-29 | Light guide structure, optical system and car light |
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