Projection optical module, lamp device and motor vehicle
By designing the optical components and pattern mask in the optical module, the spatial miniaturization and multi-directional light output of the projection optical module on the vehicle were achieved, solving the problems of large space occupation and single light output direction of the projection optical module, and meeting the needs of projecting warning/information signals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- VALEO VISION SA
- Filing Date
- 2024-10-12
- Publication Date
- 2026-04-17
AI Technical Summary
In the existing technology, projection optical modules occupy a large space on vehicles and have a single light output direction, which makes it difficult to meet the needs of projecting warning/information signals on roads or near vehicles.
Design a projection optical module including a light source, a first optical component, a pattern mask, and a second optical component. The optical path is changed by designing the optical components to form a projected image of a predetermined pattern. The pattern mask is attached to the second optical component. The reflective part is a completely reflective surface to change the optical path. The emitting part projects the image onto a road or near a vehicle.
It enables the projection optical module to adjust the direction of light output according to needs within a limited space, forming a clear and predetermined pattern projection to meet the projection requirements of warning/information signals.
Smart Images
Figure CN121876387A_ABST
Abstract
Description
Technical Field
[0001] Embodiments of this disclosure generally relate to the field of lighting and / or signal indication, and more specifically, to a projection optical module capable of projecting a pattern for indication onto the vicinity of a motor vehicle, and a lamp device and a motor vehicle equipped with such a projection optical module. Background Technology
[0002] Generally, vehicles include various lights for illumination and / or signal indication. Signal lights can be used to alert pedestrians or drivers of other vehicles to the driver's intentions; for example, activating a turn signal indicates that the vehicle is about to change direction. In addition to traditional signal lights, there is a need for lighting devices that project warning / information signals onto the road or near the vehicle to further alert pedestrians or drivers of other vehicles in blind spots.
[0003] In addition, since the projection optical module used for projection signals may be integrated in different locations in the vehicle, there are also different requirements for its light output direction while minimizing its space occupation.
[0004] This application provides a technical solution for a projection optical module that, while meeting the need for projecting warning / information signals near roads or vehicles, is miniaturized and can have different light emission directions as required. Summary of the Invention
[0005] One object of this disclosure is to solve or overcome at least one of the above-mentioned and other problems and defects existing in the prior art.
[0006] According to one aspect of this disclosure, a projection optical module for a motor vehicle is provided, characterized in that the projection optical module comprises: one or more light sources; one or more first optical components configured to form light from the light sources into a desired light distribution; at least one pattern mask disposed between the first optical components and a second optical component to form light from the first optical component into light having a predetermined pattern; at least one second optical component including an incident portion, at least one reflecting portion, and an exiting portion, wherein the incident portion receives the light having the predetermined pattern; the reflecting portion is configured to change the optical path of the light having the predetermined pattern by complete reflection; and the exiting portion is configured to project the light having the predetermined pattern onto a road to form a projected image having the predetermined pattern.
[0007] According to some embodiments of this application, the pattern mask is bonded to a second optical component.
[0008] According to some embodiments of this application, the optical focus of the second optical component is set on the plane of the pattern mask.
[0009] According to some embodiments of this application, the optical focus of the second optical component is set at the center of the pattern of the pattern mask.
[0010] According to some embodiments of this application, the light source corresponds one-to-one with the first optical component and one-to-one with the pattern on the pattern mask.
[0011] According to some embodiments of this application, the reflective portion of the second optical component includes one or more of the upper wall, lower wall, or side wall of the second optical component, and the reflective portion is a completely reflective surface.
[0012] According to some embodiments of this application, the reflective portion of the second optical component includes two fully reflective surfaces to continuously change the optical path of the light with a predetermined pattern from the incident portion.
[0013] According to some embodiments of this application, the second optical component is formed as a thick-walled lens.
[0014] According to some embodiments of this application, the pattern mask is configured as a metal mask, which is detachably fixed to the second optical component.
[0015] According to another aspect of this disclosure, embodiments also provide a lamp device including a housing and a projection optical module as described in any embodiment of this disclosure, the projection optical module being at least partially mounted in the housing.
[0016] In some embodiments, the lighting device includes at least one of a headlight for a motor vehicle, a signal indicator, and an ambient light.
[0017] According to another aspect of this disclosure, embodiments also provide a motor vehicle that includes the optical module or lamp device described in any embodiment of this disclosure.
[0018] Other objects and advantages of this disclosure will become apparent from the following detailed description of the disclosure with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the disclosure. Attached Figure Description
[0019] These and / or other aspects, features, and advantages of this disclosure will become apparent and readily understood from the following description of illustrative embodiments, taken in conjunction with the accompanying drawings, in which:
[0020] Figure 1 This is a schematic diagram showing the overall structure of a projection optical module according to an exemplary embodiment of the present disclosure;
[0021] Figure 2 This is an exploded view showing the structure of a projection optical module according to an exemplary embodiment of the present disclosure;
[0022] Figure 3 This is a schematic cross-sectional view of a projection optical module according to an exemplary embodiment of the present disclosure;
[0023] Figure 4 This is a schematic cross-sectional view of a projection optical module according to another exemplary embodiment of the present disclosure;
[0024] Figure 5 This is a schematic cross-sectional view of a projection optical module according to another exemplary embodiment of the present disclosure;
[0025] Figure 6 This is a schematic cross-sectional view of a projection optical module according to another exemplary embodiment of the present disclosure;
[0026] Figure 7 This is a projection diagram showing the lamp device according to an exemplary embodiment of the present disclosure;
[0027] Figure 8 This is a schematic illustration of a pattern mask according to an exemplary embodiment of the present disclosure. Detailed Implementation
[0028] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. In this specification, identical or similar components are indicated by identical or similar reference numerals. The following description of embodiments of this disclosure with reference to the accompanying drawings is intended to explain the overall concept of this disclosure and should not be construed as a limitation thereof.
[0029] Furthermore, in the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.
[0030] Figure 1 The overall structure of a projection optics module 10 according to an exemplary embodiment of the present disclosure is schematically shown. Figure 2 An exploded view schematically illustrating the structure of a projection optical module 10 according to an exemplary embodiment of the present disclosure. As shown... Figure 1 and Figure 2 As shown, the projection optical module 10 includes a light source 500, a first optical component 400, a pattern mask 300, a second optical component 200, a carrier 600 for carrying the above components, and a housing 100 for accommodating the above components.
[0031] In some embodiments, the light source 500 is configured as a PCB board including one or more LEDs. Light from the light source 500 passes through a first optical component 400 to form a desired light distribution. In some embodiments, the first optical component 400 is an optical component for collimating the light from the light source 500. Subsequently, light from the first optical component 400 passes through a pattern mask 300. The pattern mask 300 is disposed between the first optical component 400 and the second optical component 200 to form the light from the first optical component 400 into light having a predetermined pattern, as in some embodiments, such as... Figure 8 As shown, the predetermined pattern may be an arrow with a pointing symbol. In other embodiments, the predetermined pattern may be other patterns with pointing symbols or patterns for welcoming, etc. In some embodiments, the pattern mask 300 may be a metal mask that is detachably fixed to the first optical component 400 and / or the second optical component 200 so that it can be replaced when different optical patterns are implemented.
[0032] Subsequently, light with a predetermined pattern from the pattern mask 300 passes through the second optical component 200 and is projected onto the vicinity of the road or vehicle to form a projected image with the predetermined pattern. Figures 3 to 6 Several embodiments of the second optical component 200 are shown according to different design requirements.
[0033] In some embodiments, the number of patterns on the light source 500, the first optical component 400, and the pattern mask 300 are in a one-to-one correspondence, so that each pattern in the final projected image is clearly distinguishable.
[0034] The following will combine Figures 3 to 6 Examples of several embodiments of projection optical modules for different design needs are shown.
[0035] like Figure 3 As shown, in some embodiments, the projection optical module includes a light source 1500, a first optical component 1400, a pattern mask 1300, and a second optical component 1200. The pattern mask 1300 is attached to the second optical component 1200. In some embodiments, the optical focal point F of the second optical component 1200 is disposed on the plane of the pattern mask 1300. In other embodiments, the optical focal point F is disposed at the center of the pattern on the pattern mask 1300 to make the projected pattern clearer.
[0036] according to Figure 3In the illustrated embodiment, the second optical component 1200 includes a front wall serving as an incident portion, a side wall 1210 serving as a reflective portion, and an exit surface 1250 serving as an exit portion. In some embodiments, the side wall 1210 is a completely reflective surface, such that light incident along the dotted line direction is completely reflected at the side wall 1210 and exits from the exit surface 1250. Specifically, the second optical component 1200 has a front wall perpendicular to the light incident direction and a downwardly inclined side wall 1210 such that incident light with a predetermined pattern exits obliquely downward after complete reflection. Therefore, according to Figure 3 The second optical component 1200 of the illustrated embodiment has a downward-sloping emission direction and can be projected onto the road outside the vehicle.
[0037] Figures 4 to 6 Several embodiments of the second optical component's reflective portion, comprising two fully reflective surfaces, are shown. These embodiments configure the reflective portion of the second optical component according to design requirements to continuously alter the optical path of light with a predetermined pattern from the incident portion.
[0038] like Figure 4 The reflective portion of the second optical component 2200 shown has an upper wall 2210 and a lower wall 2220. For example... Figure 4 As shown by the dashed line, in some embodiments, the upper wall 2210 and the lower wall 2220 are both fully reflective surfaces and are arranged in parallel to continuously change the optical path of light with a predetermined pattern from the incident portion, so that the light with the predetermined pattern exits from the exit portion 3250, thereby making the second optical component 2200 have a more compact size. Specifically, the second optical component 220 has an upwardly inclined incident portion, and the incident light undergoes two complete reflections between the parallel upper walls 2210 and 2220 before exiting towards the downwardly inclined exit surface 2250.
[0039] like Figure 5 The reflective portion of the second optical component 3200 shown has sidewalls 3210 and 3220. For example... Figure 5 As shown by the dashed line, in some embodiments, sidewalls 3210 and 3220 are both completely reflective surfaces and are configured to continuously change the optical path of light with a predetermined pattern from the incident portion, so that when the exit portion of the second optical component 3200 has a vertically downward exit direction, light with a predetermined pattern is emitted from the exit portion 3250. Specifically, sidewalls 3210 and 3220 are inclined upward so that light with a predetermined pattern from the incident portion is first completely reflected on sidewall 3220, then completely reflected on sidewall 3210, and finally emitted from the exit portion 3250.
[0040] like Figure 6 The reflective portion of the second optical component 4200 shown has sidewalls 4210 and 4220. For example... Figure 5As shown by the dashed line, in some embodiments, the sidewalls 4210 and 4220 are both fully reflective surfaces and are configured to continuously change the optical path of light with a predetermined pattern from the incident portion, so that the light with the predetermined pattern is emitted from the exit portion 4250, and the exit portion of the second optical component 3200 has an inclined downward exit direction.
[0041] As can be seen, different second optical component designs can be adopted according to the technical solutions of this disclosure, depending on the different light source positions, emission angles, and projection optical module volume requirements. In the above embodiments, the second optical component is formed as a single thick-walled lens to simplify assembly. However, this disclosure is not limited to this; in some embodiments, the various parts of the second optical component can be formed as separate optical elements.
[0042] Figure 7 A projection diagram of a lamp device according to an exemplary embodiment of the present disclosure is shown. In some embodiments, the projection optics module 10 may be disposed at the headlight of the vehicle 20 to project onto the outside of the vehicle 20 in accordance with regulations. Figure 7 As shown, D1 is the overall length of the projected pattern, D2 is the distance from the pattern to the vehicle body 20, and D3 is the distance from the projection optical module to the edge of the vehicle body 20. When the projected image is projected onto the ground at a 45° axis and D1 can be set to 800mm, D2 can be set to 600mm to 700mm, and D3 can be set to approximately 160mm.
[0043] Embodiments of this disclosure also provide motor vehicles that include optical modules or lighting devices as described in any of the foregoing embodiments.
[0044] Although this disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of this disclosure and should not be construed as limiting the disclosure. The dimensions in the drawings are merely illustrative and should not be construed as limiting the disclosure.
[0045] While some embodiments of the general concept of this disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this disclosure, the scope of which is defined by the claims and their equivalents.
Claims
1. A projection optical module for a motor vehicle, characterized in that The projection optical module includes: One or more light sources; One or more first optical components, the first optical components being configured to form light from a light source into a desired light distribution; At least one pattern mask is disposed between a first optical component and a second optical component to form light from the first optical component into light having a predetermined pattern; At least one second optical component, the second optical component comprising an incident portion, at least one reflective portion, and an exiting portion, wherein The incident portion receives the light having a predetermined pattern; The reflector is configured to change the optical path of the light with the predetermined pattern by completely reflecting it. The emitting part is configured to project the light with a predetermined pattern onto the road to form a projected image with a predetermined pattern.
2. The projection optical module according to claim 1, wherein... The pattern mask is attached to the second optical component.
3. The projection optical module according to claim 1, wherein... The optical focus of the second optical component is set on the plane of the pattern mask.
4. The projection optical module according to claim 2, wherein The optical focus of the second optical component is set at the center of the pattern of the pattern mask.
5. The projection optical module according to claim 1, wherein... The light source corresponds one-to-one with the first optical component and one-to-one with the pattern on the pattern mask.
6. The projection optical module according to claim 1, wherein The reflective portion of the second optical component includes one or more of the upper wall, lower wall, or side wall of the second optical component, and the reflective portion is a completely reflective surface.
7. The projection optical module according to claim 1, wherein... The reflective portion of the second optical component includes two fully reflective surfaces to continuously change the optical path of the light with the predetermined pattern from the incident portion.
8. The projection optical module according to claim 1, wherein The second optical component is formed as a single thick-walled lens.
9. The projection optical module according to claim 1, wherein The pattern mask is configured as a metal mask, which is detachably fixed to the second optical component.
10. A lighting device, comprising: case; and The optical module according to any one of claims 1-9, wherein the optical module is at least partially mounted in the housing.
11. A motor vehicle, wherein, The vehicle includes an optical module as described in any one of claims 1-9, or a lighting device as described in claim 10.