CN114198714A - Optical system with light guide strip uniformly lighted and automobile signal lamp thereof - Google Patents
Optical system with light guide strip uniformly lighted and automobile signal lamp thereof Download PDFInfo
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- CN114198714A CN114198714A CN202111334752.8A CN202111334752A CN114198714A CN 114198714 A CN114198714 A CN 114198714A CN 202111334752 A CN202111334752 A CN 202111334752A CN 114198714 A CN114198714 A CN 114198714A
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- light guide
- light
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- guide strip
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- 230000003287 optical effect Effects 0.000 title claims abstract description 84
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 241000258971 Brachiopoda Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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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
- 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
- F21S43/236—Light guides characterised by the shape of the light guide
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- 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
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
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- 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
Abstract
The invention provides an optical system for uniformly lighting a light guide strip and an automobile signal lamp thereof, belonging to the technical field of automobile lamps, and the optical system comprises a light source, wherein the light source is correspondingly arranged at the end part of the light guide strip; the light guide strip comprises a first light guide area, a turning area and a second light guide area, the first light guide area and the second light guide area are respectively arranged at two ends of the turning area, the irradiation light of the light source is transmitted to the turning area through the inner cavity of the first light guide area, and the irradiation light is reflected to the second light guide area through the turning area; the turning area is provided with a first optical tooth used for reflecting a light source to the inner wall of the light guide strip, and the first optical tooth is arranged in a protruding mode towards the direction of the inner cavity of the light guide strip. The lighting uniformity of the starting end of the light guide strip under the condition of limited space modeling can be improved, and the car lamp is more attractive visually.
Description
Technical Field
The invention relates to the technical field of car lamps, in particular to an optical system for uniformly lighting a light guide strip and a car signal lamp thereof.
Background
The lamps and lanterns units such as indicator, tail lamp of car have multiple mode of lighting, compare in traditional reflector type car light, use the light guide technique can promote the homogeneity that light distributes, reduce dark space phenomenon. At present, when the light guide strip is designed, a first optical tooth of the light guide strip is provided with a parting line (the parting line is produced by mould processing and is an unavoidable defect), and the parting line also causes non-uniformity and needs enough length for light mixing. For a car lamp system with limited modeling space, such as a grille lamp system, the starting end of the light guide strip needs to be bent by nearly 90 degrees, the starting 2-4 optical teeth of the light guide strip cannot be shielded, and the light guide strip does not have enough length to mix light.
The invention discloses a light guide type automobile side steering lamp which comprises a lamp shell, a lamp shade, a lamp holder, an LED circuit board and an LED lamp, wherein a light guide strip is arranged in a closed cavity formed between the lamp shade and the lamp shell, the inner end of the light guide strip is close to the LED lamp, a step-shaped light distribution surface is arranged on the inner surface of the outer end of the light guide strip, the inner end surface of the light guide strip close to the LED lamp is provided with a light condensation convex surface, the inner surface of the light guide strip is provided with a prismatic pattern rib capable of improving the illumination intensity, the pattern ribs are distributed at intervals from the light condensation convex surface to the light distribution surface, and the included angle between the two side surfaces of the pattern rib is 60-120 degrees. However, the above technical solutions have the following disadvantages: according to the technical scheme, light is condensed by the light condensing convex surface of the light guide strip and then is transmitted to the outer side of the lampshade, and in the transmission process, the light is dispersed and reflected by the triangular patterns distributed at intervals on the light guide strip to improve illuminance. However, the light emitting surface of the light guide strip is provided with the patterns distributed at intervals, which may cause the uneven light emitting surface, thereby affecting the lighting effect, and at the same time, the difficulty of the mold design and preparation is increased, which is not beneficial to reducing the production cost.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide an optical system for uniformly lighting a light guide strip and an automobile signal lamp thereof.
The optical system for uniformly lighting the light guide strip comprises a light source, a light source and a light source module, wherein the light source is correspondingly arranged at the end part of the light guide strip;
the light guide strip comprises a first light guide area, a turning area and a second light guide area, the first light guide area and the second light guide area are respectively arranged at two ends of the turning area, the irradiation light of the light source is transmitted to the turning area through an inner cavity of the first light guide area, and the irradiation light is reflected to the second light guide area through the turning area;
the turning area is provided with a first optical tooth used for reflecting a light source to the inner wall of the light guide strip, and the first optical tooth is arranged in a protruding mode towards the direction of the inner cavity of the light guide strip.
In some embodiments, a plurality of second optical teeth are respectively disposed in the first light guide region and the second light guide region, and the plurality of second optical teeth are respectively arranged on two sides of the first optical teeth.
In some embodiments, the first optical tooth and the second optical tooth are respectively disposed on the inner side of the light guide strip, and the turning region is disposed to be curved toward the inner side of the light guide strip.
In some embodiments, the light guide strip includes an outer side, and the outer side is correspondingly provided with a light-transmitting area, and the light-transmitting area is arranged with the same radian as the second light guide area.
In some embodiments, one end of the light-transmitting area is disposed corresponding to the turning area, and the other end of the light-transmitting area is disposed corresponding to the end of the second light-guiding area.
In some embodiments, the first optical teeth are designed in a tooth-like structure, the tooth heights of the first optical teeth at two ends of the turning zone are gradually deepened to the tooth height of the first optical teeth at the center of the turning zone, and the tooth height of the first optical teeth is at most 1 mm.
In some embodiments, the tooth profile of the first optical tooth is disposed in an arc or a plane.
In some embodiments, a pattern is disposed on an outer side of the turning zone, the light pattern is disposed along an extending direction of the turning zone, and a width of the pattern is 1 mm.
In some embodiments, the irradiation light from the light source is irradiated onto the first optical tooth wall disposed in the inner cavity, and the irradiation light is reflected in the traveling direction.
The invention also provides an automobile signal lamp which comprises the optical system for uniformly lighting the light guide strip.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the turning area is provided, the first optical teeth are arranged in the turning area, and the tooth heights of the first optical teeth at two ends of the turning area are gradually deepened to the tooth height of the first optical tooth at the center of the turning area, so that the lighting uniformity of the starting end of the light guide strip under the condition of limited space modeling can be improved;
2. according to the invention, the first light guide region and the second light guide region are arranged, and the second optical teeth are arranged in the first light guide region and the second light guide region, so that the initial bright spots of the light guide strips are weakened and optimized, and the car lamp is more attractive visually;
3. the invention adopts the mode of increasing the vertical stripe patterns arranged on the outer side of the turning area, thereby further improving the lighting uniformity of the light guide.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic top view of an optical system for uniformly illuminating a light guide strip according to the present invention;
FIG. 2 is a schematic front view of an optical system for uniformly illuminating a light guide strip according to the present invention;
FIG. 3 is a first enlarged view of a portion of the turning area of the uniformly illuminated optical system of the present invention;
FIG. 4 is a first cross-sectional view of a turning area of an optical system with a uniformly illuminated light guide strip according to the present invention;
FIG. 5 is a schematic diagram of the structure of the turning area of the optical system with the light guide bar uniformly illuminated according to the present invention;
FIG. 6 is a second cross-sectional view of the turning area of the optical system with the light guide bar uniformly illuminated according to the present invention;
FIG. 7 is a second enlarged view of a portion of the turning area of the uniformly illuminated optical system of the present invention;
reference numerals:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1:
fig. 1 is a schematic top view of an optical system with a uniformly lit light guide strip, fig. 2 is a schematic front view of the optical system with the uniformly lit light guide strip, and fig. 3 is a partial enlarged view of a turning area of the optical system with the uniformly lit light guide strip.
Light guide strip 2 includes first leaded light district 5, turn district 4 and second leaded light district 6, and first leaded light district 5 and second leaded light district 6 set up respectively at the both ends of turn district 4, and the illumination light of light source 1 propagates to turn district 4 through 5 inner chambers 21 of first leaded light district, and illumination light is penetrated and is reflected to second leaded light district 6 through turn district 4.
The turning area 4 is provided with a first optical tooth 7 for reflecting the light source 1 towards the inner wall 24 of the light guide strip 2, and the first optical tooth 7 is arranged to protrude towards the inner cavity 21 of the light guide strip 2.
Second optical teeth 8 are arranged in the first light guide area 5 and the second light guide area 6 respectively, the second optical teeth 8 are arranged in a plurality of numbers, and the second optical teeth 8 are arranged on two sides of the first optical teeth 7 respectively. In the present exemplary embodiment, the first optical tooth 7 and the second optical tooth 8 are each arranged on the inner side 22 of the light guide strip 2, and the turning region 4 is arranged in a curved manner in the direction of the inner side 22 of the light guide strip 2.
Light guide strip 2 includes outside 23, and outside 23 corresponds is equipped with printing opacity district 3, and printing opacity district 3 adopts the radian setting the same with second light guide zone 6. One end of the light transmission area 3 is arranged corresponding to the turning area 4, and the other end of the light transmission area 3 is arranged corresponding to the end of the second light guide area 6.
The first optical teeth 7 are designed by adopting a tooth-shaped structure, the tooth heights of the first optical teeth 7 at two ends of the turning zone 4 are gradually deepened to the tooth height of the first optical tooth 7 at the center of the turning zone 4, and the tooth height of the first optical tooth 7 is 1mm at most. The tooth form of the first optical tooth 7 is arranged in a radian or a plane, so that light rays are further scattered, and the lighting uniformity of the front end is improved.
The working principle is as follows: as shown in fig. 4, which is a schematic cross-sectional view of a turning area of an optical system in which a light guide strip is uniformly lit, a large amount of light is reflected forward by an inner wall 24 of the turning area 4, and at this time, less light is irradiated to a surface of the turning area 4 where the first optical teeth 7 are disposed, and when the light guide strip 2 is observed from the outer side of the light guide strip 2, the light guide turning area 4 may have a significant dark area, so that the tooth height of the first optical teeth 7 is increased during optical design, a part of light may be reflected forward through the first optical teeth 7, and the uniformity of the light guide may be visually improved by a large number of first optical teeth 7 disposed at intervals.
As shown in fig. 7, which is a second partial enlarged view of the turning area of the optical system in which the light guide bar is uniformly lit, the tangent plane of the first optical tooth 7 is a, the normal line of the tangent plane is B, the outgoing light C points in the vehicle traveling direction, the incident light D is the direction of the light guide bar, and the incident angle E is equal to the outgoing angle F, which satisfies the reflection law. The irradiation light from the light source 1 is irradiated onto the tooth wall of the first optical tooth 7 provided in the cavity 21, and the irradiation light is reflected in the vehicle traveling direction.
Example 2:
in this embodiment 2, the lighting uniformity of the light guide is further improved by forming the pattern 9 on the outer side 23 of the turning zone 4 on the basis of the embodiment 1.
Fig. 5 is a schematic structural diagram of a turning area of an optical system in which a light guide bar is uniformly lit, and fig. 6 is a schematic sectional diagram of a turning area of an optical system in which a light guide bar is uniformly lit according to a second embodiment of the present invention. The width of the pattern 9 is 1 mm.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An optical system for uniformly lighting a light guide strip comprises a light source, and is characterized in that the light source is correspondingly arranged at the end part of the light guide strip (2);
the light guide strip (2) comprises a first light guide region (5), a turning region (4) and a second light guide region (6), the first light guide region (5) and the second light guide region (6) are respectively arranged at two ends of the turning region (4), irradiation light of the light source (1) is transmitted to the turning region (4) through an inner cavity (21) of the first light guide region (5), and the irradiation light is reflected to the second light guide region (6) through the turning region (4);
turn district (4) are equipped with and are used for to light guide strip (2) inner wall (24) reflection light source (1) first optics tooth (7), first optics tooth (7) to light guide strip (2) inner chamber (21) direction protrusion sets up.
2. The optical system of claim 1, wherein the first light guide region (5) and the second light guide region (6) are respectively provided with a plurality of second optical teeth (8), and the plurality of second optical teeth (8) are respectively arranged on two sides of the first optical teeth (7).
3. Optical system for uniform lighting of a light guide strip according to claim 2, characterized in that the first optical tooth (7) and the second optical tooth (8) are respectively arranged on the inner side (22) of the light guide strip (2), and the turning zone (4) is arranged curved towards the inner side (22) of the light guide strip (2).
4. The optical system of claim 1, wherein the light guide strip (2) comprises an outer side (23), the outer side (23) is correspondingly provided with a light-transmitting area (3), and the light-transmitting area (3) is arranged in the same radian as the second light guide area (6).
5. The optical system as claimed in claim 4, wherein one end of the light-transmitting region (3) is disposed corresponding to the turning region (4), and the other end of the light-transmitting region (3) is disposed corresponding to the end of the second light-guiding region (6).
6. The optical system according to claim 1, wherein the first optical teeth (7) are designed in a tooth-like structure, the tooth height of the first optical teeth (7) at two ends of the turning region (4) is gradually increased to the tooth height of the first optical teeth (7) at the center of the turning region (4), and the tooth height of the first optical teeth (7) is at most 1 mm.
7. An optical system for uniformly lighting a light guide strip according to claim 6, wherein the tooth shape of the first optical tooth (7) is arranged in an arc or a plane.
8. The optical system as claimed in claim 1, wherein a pattern (9) is formed on the outer side (23) of the turning zone (4), the light pattern is arranged along the extending direction of the turning zone (4), and the width of the pattern (9) is 1 mm.
9. The optical system of claim 1, wherein the illuminating light from the light source (1) is irradiated onto the tooth wall of the first optical tooth (7) disposed in the inner cavity (21), and the illuminating light is reflected in the traveling direction.
10. An automotive signal lamp comprising an optical system for uniformly lighting the light guide strip according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111334752.8A CN114198714A (en) | 2021-11-11 | 2021-11-11 | Optical system with light guide strip uniformly lighted and automobile signal lamp thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111334752.8A CN114198714A (en) | 2021-11-11 | 2021-11-11 | Optical system with light guide strip uniformly lighted and automobile signal lamp thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198714A true CN114198714A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111334752.8A Pending CN114198714A (en) | 2021-11-11 | 2021-11-11 | Optical system with light guide strip uniformly lighted and automobile signal lamp thereof |
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| Country | Link |
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| CN (1) | CN114198714A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040067038A1 (en) * | 2002-10-03 | 2004-04-08 | Dragoslav Popovic | Light guide and lateral illuminator |
| DE102018118764A1 (en) * | 2018-08-02 | 2020-02-06 | Automotive Lighting Reutlingen Gmbh | Motor vehicle lighting device with a corrugated light guide |
-
2021
- 2021-11-11 CN CN202111334752.8A patent/CN114198714A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040067038A1 (en) * | 2002-10-03 | 2004-04-08 | Dragoslav Popovic | Light guide and lateral illuminator |
| DE102018118764A1 (en) * | 2018-08-02 | 2020-02-06 | Automotive Lighting Reutlingen Gmbh | Motor vehicle lighting device with a corrugated light guide |
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