Optical module and vehicle
By configuring the angle between the positive light direction and the horizontal plane of the light source in the LED headlight module, the direct light emitted by the light source does not pass through the collimating lens, the problem of insufficient setting accuracy of stray light and occlusion structures is solved, and efficient light utilization and module tolerance are achieved.
Patent Information
- Application Number
- CN202420718827.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-09
AI Technical Summary
When the direct light emitted by the light source enters the lens directly, stray light will be caused, affecting driving safety, and a shading structure needs to be set up to eliminate stray light, but the setting accuracy of this structure is high and the cost is high.
By placing the angle between the positive light direction of the light source and the horizontal plane between 5° and 25°, the direct light emitted by the light source does not pass through the collimating lens, thereby avoiding the generation of stray light and reducing the presence of invalid optical areas.
It realizes the reduction of stray light generation, improves the light utilization efficiency, avoids the problems of insufficient setting accuracy and high cost of the occlusion structure, and improves the tolerance of the module.
Smart Images
Figure CN222718034U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle lighting technology, and in particular to an optical module and a vehicle. Background Art
[0002] With the vigorous development of the automobile market, car lights have gradually been endowed with more functional attributes from the very beginning lighting components. As the most important light-emitting component in the car light assembly, the importance of optical modules is self-evident.
[0003] At present, LED car light technology in the market is becoming more and more mature. The mainstream car light module uses a single-focus lens optical system. Since the current mainstream shape is increasingly tending to narrow openings at the top and bottom, this design method does not perform well in terms of efficiency and light pattern.
[0004] like Figure 1-Figure 2 The narrow opening module solution shown in the figure is a common solution on the market. The focus of the lens 2' is placed at the root of the reflector 1', thereby forming a low beam light type with a cut-off line. However, if the direct light emitted by the light source 3' along the positive light emitting direction directly enters the lens 2', it will cause strong stray light, which will dazzle people and cause great harm to driving safety. Therefore, Figure 2 It is necessary to set a shielding structure 4' in front of the light source 3' to shield the direct light emitted by the light source 3' and eliminate the influence of the direct light on the light pattern. However, the shielding structure 4' needs to be painted black and has high requirements for the setting position and setting height. If the position is low, the expected shading effect cannot be achieved, the stray light caused by the direct light is still obvious, and the subjective effect is poor; if the position is high, the expected main light pattern will be blocked. And if Figure 3 Since part of the light emitted obliquely upward by the light source 3' will leak out of the optical module from the front of the reflector 1', there will be a large invalid optical area above the shielding structure. Correspondingly, less light enters the lens 2', and the light utilization efficiency is low. Utility Model Content
[0005] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:
[0006] An optical module, comprising:
[0007] A reflector, comprising a concave reflecting surface, for reflecting the light emitted by the light source into a modeling light;
[0008] a light source, disposed at or near the light-emitting focus of the reflector;
[0009] A collimating lens, arranged in front of the reflecting direction of the reflector, for collimating the modeling light;
[0010] The positive light emitting direction of the light source is configured to be forward and obliquely upward, and an angle α is formed between the positive light emitting direction and the horizontal plane, and 5°≤α≤25°.
[0011] In one embodiment, the angle between the positive light emitting direction and the horizontal plane is 5°≤α
[0012] ≤15°.
[0013] In one embodiment, the intersection line between the front surface of the collimating lens and a vertical plane extending in the front-to-back direction is an outwardly convex arc line, which is used to converge the outgoing light in the vertical direction.
[0014] In one embodiment, an inner lens is further included, which is arranged between the reflector and the collimating lens. The projection of the surface of the inner lens on one side close to the collimating lens on the horizontal plane is an outward convex arc line, and the inner lens forms a vertical focal line on the side close to the collimating lens for converging light in the horizontal direction.
[0015] In one embodiment, the inner lens is an aplanatic lens.
[0016] In one embodiment, the reflective surface of the reflector is an ellipsoidal surface.
[0017] In one embodiment, a cut-off line structure is provided at the root of the reflector to form a low-beam cut-off line.
[0018] A means of transport comprises any one of the optical modules described above.
[0019] In this embodiment, the positive light emitting direction of the light source is configured to be forward and obliquely upward, that is, the direct light emitted along the positive light emitting direction does not pass through the collimating lens, does not form stray light to cause blurring of the light pattern boundary or affect the main light pattern;
[0020] In this embodiment, the angle between the positive light emitting direction and the horizontal plane is set between 5° and 25°, so that the angle value β of the light emitted by the light source and leaking out of the optical module from the front of the reflector is smaller. Compared with the solution of setting a shielding structure, the invalid optical area is reduced, more light enters the lens, and the light utilization efficiency is high.
[0021] This embodiment no longer needs to set up a shielding structure, thus eliminating the processing and installation costs of setting up a shielding structure. In addition, since there is no need to set up a shielding structure, display problems caused by insufficient setting accuracy of the shielding structure are avoided, thereby improving the tolerance rate of the module.
[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a schematic diagram of the structure of a narrow-aperture optical module on the market;
[0025] Figure 2 for Figure 1 Schematic diagram of the main light pattern formed by the optical module;
[0026] Figure 3 for Figure 1 Schematic diagram of the ineffective optical area formed by the optical module;
[0027] Figure 4 A schematic diagram of the structure of an optical module provided in one embodiment of the present application;
[0028] Figure 5 for Figure 4 A schematic diagram of an ineffective optical area formed by the optical module shown;
[0029] Figure 6 A schematic top view of a collimating lens of an optical module provided in an embodiment of the present application collimating light;
[0030] Figure 7 A three-dimensional diagram of an optical module provided in one embodiment of the present application;
[0031] Figure 8 A schematic top view of an inner lens of an optical module provided by an embodiment of the present application collimating light;
[0032] Fig. 9 It is the low beam kink light pattern formed after the inner lens is horizontally collimated and the collimating lens is vertically collimated;
[0033] Fig.10 This is a high beam light pattern with prominent brightness in the middle formed after two rounds of collimation;
[0034] Fig.11 The equal optical path lens and the vertical collimating lens cooperate to form a low beam flat light pattern with a smooth center;
[0035] In the figure:
[0036] 1', reflector; 2', lens; 3', light source; 4', shielding structure;
[0037] 1. Reflector; 2. Collimating lens; 3. Light source; 5. Inner lens. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0040] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0042] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0043] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0044] like Figure 1 and Figure 2 If the direct light from the light source 3' enters the lens 2' directly, it will cause strong stray light, which will dazzle people and cause great harm to driving safety. Therefore, it is necessary to set a shielding structure 4' in front of the light source 3' to block the direct light from the light source 3' and eliminate the influence of the direct light on the light type. However, the shielding structure 4' needs to be processed with black paint and has high requirements for the setting height and setting accuracy. If the setting position is low, the expected shading effect cannot be achieved, the stray light caused by the direct light is still very obvious, and the subjective effect is poor; if the setting position is too high, the expected main light type will be blocked. In addition, refer to Figure 3 Since the light emitted by the light source 3' obliquely upward will leak out of the optical module from the front of the reflector 1' along the upper edge of the shielding structure 4', a large invalid optical area will be formed above the shielding structure 4'. Correspondingly, less light will enter the lens 2', and the light utilization efficiency is low.
[0045] The optical module provided by this application is exemplarily described below:
[0046] As an alternative implementation, see Figure 4 , an optical module, comprising:
[0047] The reflector 1 comprises a concave reflecting surface, and is used to reflect the light emitted by the light source 3 into a modeling light;
[0048] A light source 3 is provided at or near the light emitting focus of the reflector 1;
[0049] A collimating lens 2, arranged in front of the reflecting direction of the reflector 1, for collimating the modeling light;
[0050] The positive light emitting direction of the light source 3 is configured to be forward and obliquely upward, and an angle α is formed between the positive light emitting direction and the horizontal plane, and 5°≤α≤25°.
[0051] Specifically, Figure 5 In this embodiment, the positive light emitting direction of the light source 3 is configured to be forward and obliquely upward, that is, the direct light emitted along the positive light emitting direction does not pass through the collimating lens 2, and does not form stray light to cause blurring of the light pattern boundary or affect the main light pattern;
[0052] Figure 5It can be seen that this embodiment sets the angle between the positive light emitting direction and the horizontal plane between 5° and 25°, so that the angle value β of the light emitted by the light source 3 and leaking out of the optical module from the front of the reflector 1 is smaller. Compared with the solution of setting a shielding structure 4', the invalid optical area is reduced, more light enters the lens, and the light utilization efficiency is high.
[0053] This embodiment no longer needs to set up a shielding structure 4', thus saving the processing and installation costs of setting up the shielding structure 4'. In addition, since there is no need to set up a shielding structure 4', display problems caused by insufficient setting accuracy of the shielding structure 4' are avoided, thereby improving the tolerance rate of the module.
[0054] In some embodiments, the angle between the positive light emitting direction and the horizontal plane is 5°≤α≤15°. According to tests, when this angle value is adopted, the main light pattern formed after collimation by the collimating lens 2 has clear boundaries, high brightness, and higher overall light energy utilization.
[0055] refer to Figure 4 In some embodiments, the intersection of the front surface of the collimating lens 2 and the vertical plane extending in the front-to-back direction is a convex arc line, which is used to converge the outgoing light in the vertical direction. Specifically, the front surface of the collimating lens 2 can be convex, and the light entering the collimating lens 2 converges to the preset horizontal focal line, forming a clearer light pattern. The rear surface of the collimating lens 2 can be a plane or a convex shape. Figure 6 The curved surface shown.
[0056] refer to Figure 7 In some embodiments, it further includes an inner lens 5, which is disposed between the reflector 1 and the collimating lens 2; Figure 8 , the projection of the surface of one side of the inner lens 5 close to the collimating lens 2 on the horizontal plane is an outward convex arc line, and the inner lens forms a vertical focal line on the side close to the collimating lens 2, which is used to converge the light in the horizontal direction. Specifically, the inner lens 5 performs a horizontal convergence and collimation of the light entering it toward the vertical focal line, and the converged light is subjected to a second vertical convergence and collimation through the collimating lens 2. The horizontal collimation and the vertical collimation are superimposed on each other to fully collimate the light type and form an inflection point with prominent brightness in the middle. When applied to the low beam module, after collimation in two directions under the low beam working condition, a low beam is formed as follows Fig. 9 The low beam kink light type with an inflection point in the middle shown in the figure; when applied to the high beam module, it forms the following after two collimations under the high beam working condition Fig.10 The high beam light pattern with prominent brightness in the middle shown in the figure can cover the bending line in the middle of the upper edge of the low beam light pattern when the high beam is in high beam working condition and the high beam and low beam are turned on synchronously, thereby making the entire light pattern formed by the high beam working condition more complete.
[0057] In some embodiments, the inner lens 5 is an equal-path lens.
[0058] Specifically, the inner lens 5 is an equal optical path lens (the thickness of each part of the equal optical path lens along the front-to-back direction is consistent), and the light entering therein is collimated to the same extent in each direction perpendicular to the light transmission direction, and no inflection point is formed in the middle area. Therefore, when applied to the low beam module, the following can be formed under the low beam working condition: Fig.11 The low beam flat pattern with a smooth center section is shown.
[0059] refer to Figure 4 In some embodiments, the reflective surface of the reflector 1 is an ellipsoidal surface. The ellipsoidal surface has a high reflectivity to light, which can improve the overall luminous efficiency of the optical module.
[0060] refer to Figure 4 In some embodiments, a cut-off line structure is provided at the root of the reflector 1 to form a low beam cut-off line.
[0061] The present application also provides a vehicle, comprising any of the optical modules described above.
[0062] The above-mentioned means of transportation may be a car, a train, a high-speed train or other means of transportation that requires headlights.
[0063] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0064] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
Claims
1. An optical module, characterized in that: include: A reflector, comprising a concave reflecting surface, for reflecting light emitted by the light source into a modeling light; a light source, disposed at or near the light-emitting focus of the reflector; A collimating lens, arranged in front of the reflecting direction of the reflector, for collimating the modeling light; The positive light emitting direction of the light source is configured to be forward and obliquely upward, and an angle α is formed between the positive light emitting direction and the horizontal plane, and 5°≤α≤25°.
2. An optical module according to claim 1, characterized in that: The angle formed between the positive light emitting direction and the horizontal plane is 5°≤α≤15°.
3. An optical module according to claim 1, characterized in that: The intersection line between the front surface of the collimating lens and a vertical plane extending in the front-to-back direction is an outwardly convex arc line, which is used to converge the outgoing light in the vertical direction.
4. An optical module according to claim 3, characterized in that: It also includes an inner lens, which is arranged between the reflector and the collimating lens. The projection of the surface of the inner lens on one side close to the collimating lens on the horizontal plane is an outward convex arc line, and the inner lens forms a vertical focal line on the side close to the collimating lens for converging light in the horizontal direction.
5. An optical module according to claim 4, characterized in that: The inner lens is an equal-path lens.
6. The optical module according to claim 1, characterized in that: The reflecting surface of the reflecting mirror is an ellipsoidal surface.
7. The optical module according to claim 1, characterized in that: A cut-off line structure is provided at the root of the reflector to form a low beam cut-off line.
8. A means of transport, characterized in that: The optical module comprises the optical module described in any one of claims 1 to 7.