Reflection optical structure with multiple light sources sharing virtual focal line, automobile lamp and automobile
By designing the reflective optical structure of the multi-light source confused focus line, using the parabolic contour line and multi-core LED light source, the problems of uneven lighting and low light utilization in the prior art are solved, and a more uniform lighting effect and higher light effect are achieved.
Patent Information
- Application Number
- CN202510068497.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-03-11
AI Technical Summary
In the prior art, when the multi-function multiplexed optical structure realizes multiple light sources, there is a problem that the light source is not at the focus of the optical unit, resulting in uneven lighting, and space size is limited, and the light utilization rate is low.
A reflective optical structure of a multi-light source confused focal line is designed, including a light source and a reflection unit. The light source is arranged in the light exit direction of the reflection unit. The reflection structure has at least two contour lines, each contour line includes a parabola, the parabola has a different real focus but a common line, and each light emitting center is arranged corresponding to the real focus of the corresponding parabola.
Through this structure, the uniform lighting of the light source is achieved, the light efficiency is improved, and the unidirectional collimation of the light is ensured, and the lighting uniformity is improved.
Smart Images
Figure CN119594356A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of lighting, in particular to a reflective optical structure with multiple light sources sharing a virtual focal line, a vehicle lamp and a vehicle. Background Art
[0002] In order to achieve multi-functional multiplexing, it is usually necessary to use light sources with at least two colors of light. A common solution is to have a dual-color light source located at the focus of the same optical unit, but this type of solution usually has at least one color of the light source not at the focus of the optical unit, resulting in uneven lighting. In addition, there is another type of solution that uses at least two optical units, each corresponding to a light source of a different color, but there are certain restrictions on the spatial size, and there is also a large dark area when a single color is lit, and some even have low light utilization. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a reflective optical structure, a vehicle lamp and a vehicle with a common virtual focal line of multiple light sources.
[0004] The technical solution adopted by the present invention to solve its technical problem is:
[0005] A reflective optical structure with multiple light sources sharing a virtual focal line, comprising:
[0006] light source;
[0007] A reflection unit, wherein the incident light emitted by the light source is reflected by the reflection unit to obtain an outgoing light;
[0008] The light source is arranged in the light emitting direction of the reflection unit;
[0009] The reflective structure has at least two contour lines, each of which includes a parabola; the parabolas have different real foci but a common directrix; and each contour line can be divided into an upper and a lower part.
[0010] Furthermore, the light source includes at least two single-core LEDs, the multiple single-core LEDs are arranged front and back along the light emitting direction, and the light emitting centers of the multiple single-core LEDs are respectively arranged corresponding to the real focal positions of different parabolas.
[0011] Furthermore, the light source is a multi-core LED having multiple light-emitting surfaces, the multiple light-emitting surfaces are arranged along the light-emitting direction, and the light-emitting center of each chip in the multi-core LED is arranged corresponding to the real focus position of different parabolas.
[0012] Further, the upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line and a second upper contour line, the second upper contour line is arranged on one side of the first upper contour line, the first upper contour line and the second upper contour line have different real focal points, and the first upper contour line and the second upper contour line have a common directrix;
[0013] The lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line and a second lower contour line, the first lower contour line is arranged on one side of the second lower contour line, the first lower contour line and the second lower contour line have different real focal points; the first lower contour line and the second lower contour line have a common directrix;
[0014] The first upper contour line and the first lower contour line are located on the same parabola, and the second upper contour line and the second lower contour line are located on the same parabola;
[0015] The first upper contour line and the first lower contour line form a first section line and then extend along the normal direction to form a first reflective structure. The second upper contour line and the second lower contour line form a second section line and then extend along the normal direction to form a second reflective structure. The first reflective structure and the second reflective structure are alternately arranged in the horizontal direction to form a reflective unit.
[0016] Further, the upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line and a second upper contour line, the second upper contour line is arranged on one side of the first upper contour line, the first upper contour line and the second upper contour line have different real focal points, and the first upper contour line and the second upper contour line have a common directrix;
[0017] The lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line and a second lower contour line, the first lower contour line is arranged on one side of the second lower contour line, the first lower contour line and the second lower contour line have different real focal points; the first lower contour line and the second lower contour line have a common directrix;
[0018] The first upper contour line and the first lower contour line are located on the same parabola, and the second upper contour line and the second lower contour line are located on the same parabola;
[0019] The first upper contour line and the second lower contour line are spliced to form a first section line, which is then extended along the normal direction to form a first reflective structure. The second upper contour line and the first lower contour line form a second section line, which is then extended along the normal direction to form a second reflective structure. The first reflective structure and the second reflective structure are alternately arranged in a horizontal direction to form a reflective unit.
[0020] Furthermore, the upper reflection unit has an upper contour line in the vertical plane, and the upper contour line is formed by multiple segments of upper sections with different foci alternating multiple times along the up and down directions. The lower reflection unit has a lower contour line in the vertical plane, and the lower contour line is formed by multiple segments of lower sections with different real foci alternating multiple times along the up and down directions. Multiple upper sections extend along the normal direction to form the upper reflection unit, and multiple lower sections extend along the normal direction to form the lower reflection unit.
[0021] A vehicle lamp comprises the above-mentioned reflective optical structure with multiple light sources sharing a virtual focal line.
[0022] A car comprises the above-mentioned headlight.
[0023] The beneficial effects of the present invention are as follows: the present invention is reasonably designed and has the following advantages:
[0024] (1) The present invention includes a light source and a reflective unit. The light source can be a single chip with multiple light colors or a single multi-chip. The light emission centers of both are arranged in the light emission direction of the reflective unit. The reflective structure has at least two contour lines, each of which contains a parabola. The parabola has different real foci but a common directrix. Each contour line can be divided into an upper and lower part. The light emission center of the chip of each color coincides with the real focus of the corresponding parabola. The contour lines composed of different focal lengths extend along the normal direction to form respective reflective units. The respective reflective units are spliced in different ways to form the reflective unit of the present invention.
[0025] (2) The present invention is applicable to optical structures with multiplexing functions, which improves lighting uniformity and light efficiency to a certain extent;
[0026] (3) The present invention has a simple structure and can ensure that the light emitted by the two light sources is fully received by the reflection unit as much as possible, and each light color can achieve unidirectional collimation of the light in a certain area as parallel light, thereby improving the lighting uniformity. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 is a schematic structural diagram of Example 1;
[0029] Figure 2 is a contour line diagram of Example 1 in a vertical plane;
[0030] Figure 3is a schematic diagram of light propagation principle in a vertical plane of Example 1;
[0031] Figure 4 is a diagram showing the relationship between the focal lengths of the first section line and the second section line in Example 1;
[0032] Figure 5 is a schematic structural diagram of Example 2;
[0033] Figure 6 is a schematic structural diagram of Example 3;
[0034] Figure 7 is a schematic structural diagram of Example 4;
[0035] In the figure: 1. first contour line, 2. second contour line, 3. first parabola, 4. second parabola;
[0036] 1-1. First upper contour line, 1-2. First lower contour line, 2-1. Second upper contour line, 2-2. Second lower contour line. DETAILED DESCRIPTION
[0037] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this description, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0040] A reflective optical structure with multiple light sources sharing a virtual focal line, comprising:
[0041] light source;
[0042] A reflection unit, wherein the incident light emitted by the light source is reflected by the reflection unit to obtain an outgoing light;
[0043] The light source is arranged in the light emitting direction of the reflecting unit; the reflecting structure has at least two contour lines, each contour line includes a parabola; the parabola has different real foci but a common directrix; each contour line can be divided into upper and lower parts.
[0044] Example 1
[0045] like Figure 1 and Figure 2 As shown, the X direction is the light emitting direction. In this embodiment, the light source includes two single-core LEDs, which are arranged front and back along the X direction, and the light emission centers of the two single-core LEDs are respectively arranged corresponding to the focus of the upper contour line and the focus of the lower contour line.
[0046] The surface of the reflection unit may be plated with a reflection material, so that the surface of the reflection unit has a certain reflectivity.
[0047] The upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line 1-1 and a second upper contour line 2-1, the second upper contour line 2-1 is arranged on one side of the first upper contour line 1-1, the first upper contour line 1-1 and the second upper contour line 2-1 have different real focal points, and the first upper contour line 1-1 and the second upper contour line 2-1 have a common directrix.
[0048] The lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line 1-2 and a second lower contour line 2-2, the first lower contour line 1-2 is arranged on one side of the second lower contour line 2-2, the first lower contour line 1-2 and the second lower contour line 2-2 have different real focal points; the first lower contour line 1-2 and the second lower contour line 2-2 have a common directrix.
[0049] The first upper contour line 1-1 and the first lower contour line 1-2 are located on the same parabola, and the second upper contour line 2-1 and the second lower contour line 2-2 are located on the same parabola.
[0050] The first upper contour line 1-1 and the first lower contour line 1-2 form a first section line and then extend along the normal to form a first reflective structure. The second upper contour line 2-1 and the second lower contour line 2-2 form a second section line and then extend along the normal to form a second reflective structure. The first reflective structure and the second reflective structure are alternately arranged in the horizontal direction to form a reflective unit.
[0051] like Figure 3As shown, the real focus of the first upper contour line 1-1 and the first lower contour line 1-2 is F1, the real focus of the second upper contour line 2-1 and the second lower contour line 2-2 is F2, and the light emission centers of the two single-core LEDs are respectively set corresponding to the real focus F1 and the real focus F2. The light color 1 emitted by the single-core LED at the real focus F1 is unidirectionally collimated into parallel outgoing light rays through the first upper contour line 1-1 and the first lower contour line 1-2; similarly, the light color 2 emitted by the single-core LED at the real focus F2 is unidirectionally collimated into parallel outgoing light rays through the second upper contour line 2-1 and the second lower contour line 2-2. In this embodiment, when the combination of the first upper contour line 1-1 and the second lower contour line 2-2 is selected, in the vertical direction, the light color 1 of the upper half is evenly lit, and the light color 2 of the lower half is evenly lit; in the horizontal direction, the light is Lambertian distributed; when the combination of the second upper contour line 2-1 and the first lower contour line 1-2 is selected, in the vertical direction, the light color 2 of the upper half is evenly lit, and the light color 1 of the lower half is evenly lit; in the horizontal direction, the light is Lambertian distributed.
[0052] like Figure 4 As shown, the first upper contour line 1-1 and the first lower contour line 1-2 form a first section, the second upper contour line 2-1 and the second lower contour line 2-2 form a second section, and the focal length relationship between the first section and the second section is: the distance from the first luminous center (i.e., the real focus F1) to the directrix L is defined as a, and the distance from the second luminous center (i.e., the real focus F2) to the directrix L is defined as b. According to the formula definition of the parabola, the distance from the real focus to the directrix L is equal to twice the focal length; that is, a=2f1, b=2f2, f1 is the focal length of the first section, and f2 is the focal length of the second section. We know that the distance c between the luminous centers 1 and 2, c=ab, then c=2(f1-f2); as long as the focal length of one contour line is determined, the focal length of the second contour line can be obtained by the formula.
[0053] Example 2
[0054] The difference from Example 1 is that: Figure 5 As shown, in this embodiment, the upper reflection unit has an upper contour line in the vertical plane, namely, the first contour line 1, and the lower reflection unit has a lower contour line in the vertical plane, namely, the second contour line 2, the first contour line 1 and the second contour line 2 have different real foci, the first contour line 1 and the second contour line 2 have a common directrix, the first contour line 1 extends along the normal direction to form the upper reflection unit, and the second contour line 2 extends along the normal direction to form the lower reflection unit.
[0055] In this embodiment, in the vertical direction, both light colors 1 and 2 can be evenly lit, but the uniform distribution of light color 1 or 2 is diagonally distributed in the horizontal direction.
[0056] Example 3
[0057] The difference from Example 1 is that: Figure 6 As shown, in this embodiment, the upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line 1-1 and a second upper contour line 2-1, the second upper contour line 2-1 is arranged on one side of the first upper contour line 1-1, the first upper contour line 1-1 and the second upper contour line 2-1 have different real foci, and the first upper contour line 1-1 and the second upper contour line 2-1 have a common directrix; the lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line 1-2 and a second lower contour line 2-2, the first lower contour line 1-2 is arranged on the left side of the second lower contour line 2-2, the first lower contour line 1-2 and the second lower contour line 2-2 have different real foci; the first lower contour line 1-2 and the second lower contour line 2-2 have a common directrix; the first upper contour line 1-1 and the first lower contour line 1-2 are located on the same parabola, and the second upper contour line 2-1 and the second lower contour line 2-2 are located on the same parabola.
[0058] The first upper contour line 1-1 and the second lower contour line 2-2 are spliced to form a first section line and then extended along the normal to form a first reflection structure. The second upper contour line 2-1 and the first lower contour line 1-2 form a second section line and then extend along the normal to form a second reflection structure. The first reflection structure and the second reflection structure are alternately arranged in the horizontal direction to form a reflection unit.
[0059] Example 4
[0060] The difference from Example 1 is that: Figure 7 As shown, in this embodiment, the upper reflection unit has an upper contour line in a vertical plane, and the upper contour line is formed by multiple segments of upper tangent lines with different real focuses alternating multiple times along the up-down direction. The lower reflection unit has a lower contour line in a vertical plane, and the lower contour line is formed by multiple segments of lower tangent lines with different focuses alternating multiple times along the up-down direction. Multiple upper tangent lines extend along the normal direction to form the upper reflection unit, and multiple lower tangent lines extend along the normal direction to form the lower reflection unit. In the upper reflection unit, the reflection surface formed by the two tangent lines spaced apart at the top extending along the normal direction is located on the same parabola, i.e., the first parabola 3, and the reflection surface formed by the two tangent lines spaced apart at the bottom extending along the normal direction is located on the same parabola, i.e., the second parabola 4. In the lower reflection unit, the reflection surface formed by the two tangent lines spaced apart at the top extending along the normal direction is located on the same parabola, i.e., the first parabola 3, and the reflection surface formed by the two tangent lines spaced apart at the bottom extending along the normal direction is located on the same parabola, i.e., the second parabola 4.
[0061] In summary, the present invention is reasonably designed and has the following advantages:
[0062] (1) The present invention includes a light source and a reflective unit. The light source can be a single chip with multiple light colors or a single multi-chip. The light emission centers of both are arranged in the light emitting direction of the reflective unit. The reflective structure has at least two contour lines, each of which includes a parabola. The parabola has different real foci but a common directrix. Each contour line can be divided into an upper and lower part. The light emission center of the chip of each color coincides with the real focus of the corresponding parabola. The contour lines composed of different real focus focal lengths extend along the normal direction to form respective reflective units. The respective reflective units are spliced in different ways to form the reflective unit of the present invention.
[0063] (2) The present invention is applicable to optical structures with multiplexing functions, which improves lighting uniformity and light efficiency to a certain extent;
[0064] (3) The present invention has a simple structure and can ensure that the light emitted by the two light sources is fully received by the reflection unit as much as possible, and each light color can achieve unidirectional collimation of the light in a certain area as parallel light, thereby improving the lighting uniformity.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A reflective optical structure with multiple light sources sharing a common virtual focal line, characterized in that: include: light source; A reflection unit, wherein the incident light emitted by the light source is reflected by the reflection unit to obtain an outgoing light; The light source is arranged in the light emitting direction of the reflection unit; The reflective structure has at least two contour lines, each of which includes a parabola; the parabolas have different real foci but a common directrix; and each contour line can be divided into an upper and a lower part.
2. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The light source comprises at least two single-core LEDs, the multiple single-core LEDs are arranged front and back along the light emitting direction, and the light emitting centers of the multiple single-core LEDs are respectively arranged corresponding to the real focal positions of different parabolas.
3. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The light source is a multi-core LED having multiple light-emitting surfaces, the multiple light-emitting surfaces are arranged along the light-emitting direction, and the light-emitting center of each chip in the multi-core LED is arranged corresponding to the real focus position of different parabolas.
4. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The upper reflection unit has an upper contour line in a vertical plane, and the lower reflection unit has a lower contour line in a vertical plane. The upper contour line and the lower contour line have different real focal points, and the upper contour line and the lower contour line have a common directrix. The upper contour line extends along the normal direction to form the upper reflection unit, and the lower contour line extends along the normal direction to form the lower reflection unit.
5. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line (1-1) and a second upper contour line (2-1), the second upper contour line (2-1) is arranged on one side of the first upper contour line (1-1), the first upper contour line (1-1) and the second upper contour line (2-1) have different real focal points, and the first upper contour line (1-1) and the second upper contour line (2-1) have a common directrix; The lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line (1-2) and a second lower contour line (2-2), the first lower contour line (1-2) is arranged on one side of the second lower contour line (2-2), the first lower contour line (1-2) and the second lower contour line (2-2) have different real focal points; the first lower contour line (1-2) and the second lower contour line (2-2) have a common directrix; The first upper contour line (1-1) and the first lower contour line (1-2) are located on the same parabola, and the second upper contour line (2-1) and the second lower contour line (2-2) are located on the same parabola; The first upper contour line (1-1) and the first lower contour line (1-2) form a first section line and then extend along a normal direction to form a first reflection structure; the second upper contour line (2-1) and the second lower contour line (2-2) form a second section line and then extend along a normal direction to form a second reflection structure; the first reflection structure and the second reflection structure are alternately arranged in a horizontal direction to form a reflection unit.
6. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The upper reflection unit has two upper contour lines in a vertical plane, the two upper contour lines are a first upper contour line (1-1) and a second upper contour line (2-1), the second upper contour line (2-1) is arranged on one side of the first upper contour line (1-1), the first upper contour line (1-1) and the second upper contour line (2-1) have different real focal points, and the first upper contour line (1-1) and the second upper contour line (2-1) have a common directrix; The lower reflection unit has two lower contour lines in a vertical plane, the two lower contour lines are a first lower contour line (1-2) and a second lower contour line (2-2), the first lower contour line (1-2) is arranged on one side of the second lower contour line (2-2), the first lower contour line (1-2) and the second lower contour line (2-2) have different real focal points; the first lower contour line (1-2) and the second lower contour line (2-2) have a common directrix; The first upper contour line (1-1) and the first lower contour line (1-2) are located on the same parabola, and the second upper contour line (2-1) and the second lower contour line (2-2) are located on the same parabola; The first upper contour line (1-1) and the second lower contour line (2-2) are spliced to form a first section line, which is then extended along a normal direction to form a first reflection structure; the second upper contour line (2-1) and the first lower contour line (1-2) form a second section line, which is then extended along a normal direction to form a second reflection structure; the first reflection structure and the second reflection structure are alternately arranged in a horizontal direction to form a reflection unit.
7. The reflective optical structure with multiple light sources sharing a common virtual focal line according to claim 1, characterized in that: The upper reflection unit has an upper contour line in a vertical plane, and the upper contour line is formed by multiple upper sections with different foci alternating multiple times along the up and down directions. The lower reflection unit has a lower contour line in the vertical plane, and the lower contour line is formed by multiple lower sections with different real foci alternating multiple times along the up and down directions. Multiple upper sections extend along the normal direction to form the upper reflection unit, and multiple lower sections extend along the normal direction to form the lower reflection unit.
8. A vehicle lamp, characterized in that: The vehicle lamp comprises a reflective optical structure with multiple light sources sharing a common virtual focal line as claimed in any one of claims 1 to 7.
9. A car, characterized in that: Comprising the vehicle light as claimed in claim 8.