CN117419293A - Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car - Google Patents

Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car Download PDF

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Publication number
CN117419293A
CN117419293A CN202311588293.5A CN202311588293A CN117419293A CN 117419293 A CN117419293 A CN 117419293A CN 202311588293 A CN202311588293 A CN 202311588293A CN 117419293 A CN117419293 A CN 117419293A
Authority
CN
China
Prior art keywords
light guide
total reflection
light
tooth structure
novel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311588293.5A
Other languages
Chinese (zh)
Inventor
徐岩修
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Xingyu Automotive Lighting Systems Co Ltd
Original Assignee
Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Xingyu Automotive Lighting Systems Co Ltd filed Critical Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority to CN202311588293.5A priority Critical patent/CN117419293A/en
Publication of CN117419293A publication Critical patent/CN117419293A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention relates to the technical field of car lamps, in particular to a novel light guide capable of realizing accurate light distribution, a car lamp and a car using the light guide, wherein the novel light guide capable of realizing accurate light distribution comprises a light guide, a V-shaped light guide tooth structure is arranged on the light guide, the V-shaped light guide tooth structure comprises a first total reflection surface and a second total reflection surface which are connected with each other, a certain included angle is formed between the first total reflection surface and the second total reflection surface, and the included angle between the first total reflection surface and the second total reflection surface is 90 degrees. According to the novel light guide capable of realizing accurate light distribution, through the first total reflection surface and the second total reflection surface with the section angles of 90 degrees, total reflection on small-angle light rays which cannot be realized by primary refraction can be easily realized through total reflection in two times, meanwhile, the transmission size of the V-shaped light guide tooth structure is flexible, different sizes can be realized with lower cost according to requirements, the whole processing is convenient, uniform wall thickness is convenient to realize, and the light emitting effect is further ensured.

Description

Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car
Technical Field
The invention relates to the technical field of car lamps, in particular to a novel light guide capable of realizing accurate light distribution, a car lamp using the light guide and a car.
Background
Light guides have been used for twenty-three years in the automotive light industry, which has led to many novel shapes and applications in the industry. At the same time, the form of the light guide is varied, and the cross section is mainly circular and flat.
For decades, V-shaped light guide tooth designs have focused mainly on planes, arcs, cones, balls, and the like. The behavior of the light rays within the light guide assumes various angles that satisfy the total reflection condition. By adjusting the angle of the V-shaped light guide tooth structure, a part of light can not be totally reflected, and then is refracted to the target direction. However, since the light rays are in various angles, other light rays which do not meet the total reflection condition are likely to be emitted to unwanted places, so that the light rays cannot be effectively utilized.
In addition, the German sea pull years have introduced a technique called Flat light, which can realize surface light emission; according to the propaganda of the lamp, a very small (equivalent to the size of salt particles) optical structure is adopted, the diffraction effect of light is utilized, the light efficiency is relatively high, and the lighting effect is good; however, the manufacturing cost is very high, so that the method has not been practically applied for a few years.
Referring to fig. 1, the conventional surface light source adopts a continuous V-shaped light guide tooth structure, but this scheme cannot be regarded as a light guide because it does not undergo multiple propagation, and has a disadvantage in that the dimension in the direction of conduction cannot be too large and a disadvantage in that the front-rear thickness is not uniform.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the technical problems in the prior art, the invention provides a novel light guide capable of realizing accurate light distribution, and a car lamp and a vehicle using the light guide.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a novel light guide that can realize accurate grading, includes the light guide, be equipped with at least one V type light guide tooth structure on the light guide, V type light guide tooth structure includes interconnect's first total reflection face and second total reflection face, contained angle between first total reflection face and the second total reflection face is 90 + -5 degrees.
According to the novel light guide capable of realizing accurate light distribution, through the first total reflection surface and the second total reflection surface with the section angles of 90+/-5 degrees, total reflection on small-angle light rays which cannot be realized by one refraction can be easily realized through total reflection in two times, meanwhile, the transmission size of the V-shaped light guide tooth structure is flexible, different sizes can be realized with lower cost according to requirements, the whole processing is convenient, uniform wall thickness is convenient to realize, and the light emitting effect is further guaranteed.
Further, the included angle between the incident light and the tangent line of any point on the guide line of the V-shaped light guide tooth structure is 10-50 degrees.
Further, the guide line of the V-shaped light guide tooth structure is a straight line or a curve.
Further, when the light guide is provided with two light incident surfaces, the V-shaped light guide tooth structure is arranged in a normal direction and in a bidirectional direction along the extending direction of the light guide.
Further, the wall thickness of the V-shaped light guide tooth structure is uniform.
Further, the light-emitting surface of the light guide is provided with patterns.
A car lamp comprises the novel light guide capable of realizing accurate light distribution.
A vehicle comprises the vehicle lamp.
The invention has the advantages that,
1. through the first total reflection surface and the second total reflection surface with the section angle of 90+/-5 degrees, the total reflection of light rays with small angles which cannot be realized by primary refraction can be easily realized through total reflection in two times, meanwhile, the transmission size of the V-shaped light guide tooth structure is flexible, different sizes can be realized with lower cost according to requirements, the whole processing is convenient, the uniform wall thickness is convenient to realize, and the light emitting effect is further ensured;
2. the V-shaped light guide tooth structure is arranged bidirectionally along the normal direction of the extension of the light guide, so that the light guide tooth structure can adapt to the occasion of bidirectionally entering light, and the lighting effect is improved;
3. by arranging the patterns on the light-emitting surface, the light diffusion angle of the light-emitting surface can be properly increased.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic view of an optical path embodying a surface light source in the background art.
FIG. 2 is a schematic view of the light path of a novel light guide assembly embodying the present invention for achieving precise light distribution.
Fig. 3 is a schematic view of an optical path of a second total reflection surface embodying the first total reflection surface and the second total reflection surface in the present invention.
Fig. 4 is a schematic view of the optical path of a V-shaped light guide tooth structure embodied in the present invention within a light guide.
Fig. 5 is a schematic view of the correct angle between a V-shaped light guide tooth structure and a light guide embodied in the present invention.
FIG. 6 is a schematic view of an optical path showing an improper angle between an incident light ray and a light guide in the present invention.
Fig. 7 is a schematic view of an optical path embodying the present invention with the light guide tilted to the left.
Fig. 8 is a schematic view showing the tilting of the light guide to the right in the present invention.
Fig. 9 is a schematic diagram of an optical path embodying bi-directional light input in the present invention.
Fig. 10 is a diagram showing a simulation effect of light emission when the light-emitting surface is a light surface in the present invention.
FIG. 11 is a graph showing the effect of the light emission when the vertical stripes are added to the light-emitting surface in the present invention.
1, a light guide; 2. a V-shaped light guide tooth structure; 21. a first total reflection surface; 22. and a second total reflection surface.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The invention discloses a novel light guide capable of realizing accurate light distribution, and a car lamp and a vehicle using the light guide.
Referring to fig. 2 to 4, a novel light guide 1 capable of realizing precise light distribution, and a car lamp and a car using the light guide 1, comprises the light guide 1 and a V-shaped light guide tooth structure 2 arranged on the light guide 1, wherein the V-shaped light guide tooth structure 2 comprises a first total reflection surface 21 and a second total reflection surface 22 which are mutually connected, the first total reflection surface 21 and the second total reflection surface 22 are arranged at a certain angle, and an included angle between the first total reflection surface 21 and the second total reflection surface 22 is 85-95 degrees, preferably 90 degrees, so as to reflect light rays perpendicular to the light guide 1.
Through the first total reflection face 21 and the second total reflection face 22 that cross-section angle is 85-95 degrees, can realize very easily through twice inside total reflection that can't realize once refracting the light of low-angle, and the conduction size of V type light guide tooth structure 2 itself is comparatively nimble simultaneously, can realize different sizes with lower cost according to the demand, holistic processing is comparatively convenient, is convenient for realize even wall thickness, and then ensures the light-emitting effect.
Referring to fig. 5 and 6, specifically, when light propagates in the light guide 1, an angle C between the V-shaped light guide tooth structure 2 and the light guide 1 is defined, and the degree of the angle C is 40-45 degrees, which may be 40 degrees or 45 degrees. The angle a between the incident light ray and the light guide 1 is defined as a, and the angle a is 30-50 degrees, which may be 30 degrees or 50 degrees. The V-shaped light guiding tooth structure 2 may also be a conventional light guiding structure, as long as it is capable of realizing total reflection of light, and the description in this section is based on the propagation principle of conventional light guiding teeth.
The V-shaped light guide tooth structures 2 may be arranged in an array within the light guide 1 to achieve light extraction over the entire range of the light guide 1.
In this embodiment, the included angle between the incident light and the tangent line at any point on the guiding line of the V-shaped light guiding tooth structure 2 is 10-50 degrees, which may be 10 degrees or 50 degrees. The guide line of the V-shaped light guide tooth structure 2 is a straight line or a curve, and different shapes can be selected according to the requirements of customers.
Referring to fig. 7 and 8, the optical path diagram is shown when the light guide 1 is tilted.
Referring to fig. 2 and 9, it should be noted that when two light incident surfaces are provided on the light guide 1, the V-shaped light guide tooth structures 2 are arranged bidirectionally along the normal direction of the extending direction of the light guide, that is, the two V-shaped light guide tooth structures 2 form a group, so as to reflect the light entering from the two light incident surfaces at the same time, thereby improving the overall lighting effect of the light guide 1.
In addition, the wall thickness of the V-shaped light guide tooth structure 2 is uniform, and the lighting effect can be ensured to be uniform.
Referring to fig. 10 and 11, in order to provide a certain diffusion of the light emitted from the light guide 1, a pattern may be provided on the light emitting surface of the light guide 1, and the pattern may be a vertical stripe or other shape as long as the light emitted can be provided with a certain diffusion.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (8)

1. The utility model provides a novel light guide that can realize accurate grading, its characterized in that, including light guide (1), be equipped with at least one V type light guide tooth structure (2) on light guide (1), V type light guide tooth structure (2) are including interconnect's first total reflection face (21) and second total reflection face (22), contained angle between first total reflection face (21) and second total reflection face (22) is 90 + -5 degrees.
2. The novel light guide capable of realizing precise light distribution according to claim 1, wherein an included angle between an incident ray and a tangent line of any point on a guide line of the V-shaped light guide tooth structure (2) is 10-50 degrees.
3. The novel light guide capable of realizing precise light distribution according to claim 2, wherein the guide line of the V-shaped light guide tooth structure (2) is a straight line or a curve.
4. The novel light guide capable of realizing accurate light distribution according to claim 1, wherein when the light guide (1) is provided with two light incident surfaces, the V-shaped light guide tooth structure (2) is arranged in a normal direction and in a bidirectional direction along the extending direction of the light guide (1).
5. The novel light guide capable of realizing precise light distribution according to claim 1, wherein the V-shaped light guide tooth structure (2) has uniform wall thickness.
6. The novel light guide capable of realizing precise light distribution according to claim 1, wherein the light emitting surface of the light guide (1) is provided with patterns.
7. A vehicle lamp comprising the novel light guide of any one of claims 1-6 capable of achieving precise light distribution.
8. A vehicle comprising the vehicle lamp of claim 7.
CN202311588293.5A 2023-11-24 2023-11-24 Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car Pending CN117419293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311588293.5A CN117419293A (en) 2023-11-24 2023-11-24 Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311588293.5A CN117419293A (en) 2023-11-24 2023-11-24 Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car

Publications (1)

Publication Number Publication Date
CN117419293A true CN117419293A (en) 2024-01-19

Family

ID=89528501

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311588293.5A Pending CN117419293A (en) 2023-11-24 2023-11-24 Novel light guide capable of realizing accurate light distribution, car lamp using light guide and car

Country Status (1)

Country Link
CN (1) CN117419293A (en)

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