Ellipsoidal confocal light mixing system and vehicle lamp using same

Abstract

The utility model discloses an ellipsoid confocal light mixing system and a vehicle lamp using the same. The ellipsoid confocal light mixing system comprises a first ellipsoid polarization part and a second ellipsoid polarization part which are connected side by side, the first ellipsoid polarization part and the second ellipsoid polarization part are respectively connected along the short axis direction; the top end of the first ellipsoid polarization part and the top end of the second ellipsoid polarization part are cut to form spherical concave faces, and each spherical concave face forms a light inlet face. The side surface of the first ellipsoid polarization part is a first ellipsoid side surface, and the first ellipsoid side surface forms a first ellipsoid reflection surface; the sphere center of the light inlet surface on the first ellipsoid polarization part coincides with the upper focus in the long axis direction of the first ellipsoid reflection surface; the side surface of the second ellipsoid polarization part is a second ellipsoid side surface, and the second ellipsoid side surface forms a second ellipsoid reflecting surface; the sphere center of the light inlet surface on the second ellipsoid polarization part coincides with the upper focus in the long axis direction of the second ellipsoid reflection surface; the lower focus of the first ellipsoid reflecting surface in the long axis direction coincides with the lower focus of the second ellipsoid reflecting surface in the long axis direction.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to an ellipsoidal confocal light mixing system and a vehicle lamp using the same. Background Art

[0002] In the personalized development needs of automotive interior lighting technology, OEMs have added a chasing light mode and also require linear adjustment of color temperature. In addition, the target lighting area of ​​interior lights also tends to be directional area lighting, which leads to more and more lights facing the situation where the light source's emitting direction is inconsistent with the light output direction of the lamp. The angle required for the light source's emitting direction to hit the target surface is too large, resulting in low light efficiency and poor light spot uniformity when deflected to the specified position.

[0003] In this regard, publication number CN115539900A discloses a lamp designed for automobile bias lighting, which includes a first polarizing part and a second polarizing part, the second polarizing part is connected and installed below the first polarizing part; the top of the first polarizing part is provided with a spherical concave surface, the spherical concave surface forms a light-incoming surface, the side of the first polarizing part is an ellipsoidal side surface, the ellipsoidal side surface forms an ellipsoidal reflecting surface; the side of the second polarizing part is a parabolic side surface, the parabolic side surface forms a parabolic reflecting surface, and the tail surface of the second polarizing part is a plane, the plane forms a light-emitting surface. The lamp utilizes the optical characteristics of both the ellipsoidal reflecting surface and the parabolic reflecting surface, and through the combination of the two, it can collect light well, and can efficiently deflect the light to the target angle and position, ultimately meeting the needs of regulations and customers.

[0004] However, actual research and use have found that the above public technology can only bias single-core LEDs. When the particles choose dual-core, both LED light sources are in a defocused state, or one LED is in focus and the other is off-focus, which ultimately leads to low efficiency of the entire dual-color optical system, and there is also a clear boundary between the cold and warm spots between the two light spots, which cannot completely overlap, and poor overall uniformity. Utility Model Content

[0005] The first purpose of the utility model is to provide an ellipsoidal confocal light mixing system to solve the technical problem of optimizing the mixed light output effect of a dual-color optical system.

[0006] The second object of the utility model is to provide a vehicle lamp to solve the technical problem of optimizing the mixed light output effect of a dual-color optical system.

[0007] The ellipsoid confocal light mixing system of the utility model is realized as follows:

[0008] An ellipsoidal confocal light mixing system comprises: a first ellipsoidal polarizing portion and a second ellipsoidal polarizing portion connected side by side; the first ellipsoidal polarizing portion and the second ellipsoidal polarizing portion are connected along the short axis direction thereof; wherein

[0009] The top ends of the first ellipsoid polarizing portion and the second ellipsoid polarizing portion are cut to form spherical concave surfaces, and each of the spherical concave surfaces forms a light incident surface; and

[0010] The side surface of the first ellipsoid polarizing portion is a first ellipsoid side surface, and the first ellipsoid side surface forms a first ellipsoid reflecting surface; the center of the light incident surface on the first ellipsoid polarizing portion coincides with the upper focus in the long axis direction of the first ellipsoid reflecting surface;

[0011] The side surface of the second ellipsoid polarizing portion is a second ellipsoid side surface, and the second ellipsoid side surface forms a second ellipsoid reflecting surface; the center of the light incident surface on the second ellipsoid polarizing portion coincides with the upper focus in the long axis direction of the second ellipsoid reflecting surface;

[0012] The lower focus of the first ellipsoidal reflecting surface in the long axis direction coincides with the lower focus of the second ellipsoidal reflecting surface in the long axis direction.

[0013] In an optional implementation of the present invention, the long axes of the first ellipsoidal polarizing portion and the second ellipsoidal polarizing portion are arranged in an inclined structure.

[0014] In an optional implementation of the present invention, the first ellipsoidal polarizing portion and the second ellipsoidal polarizing portion are integrally formed.

[0015] In an optional implementation of the present invention, the light incident surfaces of the first ellipsoid polarizing portion and the second ellipsoid polarizing portion are both provided with diffusion patterns or leather patterns.

[0016] The vehicle lamp of the utility model is realized as follows:

[0017] A vehicle lamp comprises: a housing, a light source assembly and a condenser arranged in the housing, and the ellipsoidal confocal light mixing system; wherein

[0018] The light source assembly includes a circuit board and a dual-core LED light source arranged on the circuit board; and

[0019] The ellipsoid confocal light mixing system is arranged between the dual-core LED light source and the condenser; the focusing end of the condenser is arranged toward the ellipsoid confocal light mixing system;

[0020] The dual-core LED light source has two optical centers, one of which coincides with the center of the light incident surface of the first ellipsoid polarizing portion, and the other coincides with the center of the light incident surface of the second ellipsoid polarizing portion.

[0021] In an optional implementation of the utility model, the light-focusing end is a structure that is convex backward as a whole, concave at the center, and the bottom surface of the concave is convex backward;

[0022] The inner side surface of the recess is a curved surface that has a collimating effect on light, and the bottom surface is a rotation curved surface, and its rotation center line passes forward through the light-emitting surface of the concentrator.

[0023] In an optional implementation of the present invention, the end portion of the ellipsoidal confocal light mixing system facing away from the dual-core LED light source extends into the focusing end.

[0024] In an optional implementation of the utility model, a diffusion pattern or a leather pattern is arranged on the light emitting surface.

[0025] In an optional implementation of the present invention, the ellipsoidal confocal light mixing system is made of transparent material.

[0026] In an optional implementation of the present invention, the concentrator is made of a transparent material.

[0027] By adopting the above technical scheme, the utility model has the following beneficial effects: the ellipsoidal confocal light mixing system of the utility model and the vehicle lamp using the same, for the ellipsoidal confocal light mixing system adopted, the lower focus of the long axis direction of the first ellipsoidal reflection surface coincides with the lower focus of the long axis direction of the second ellipsoidal reflection surface, when it is applied in a specific vehicle lamp, in conjunction with the concentrator, the lower focus of the ellipsoidal confocal light mixing system is the virtual focus of the concentrator, under this structure, the light incident surface of the second ellipsoidal polarized light of the first ellipsoidal polarizing part receives the light emitted by the dual-core LED light source and continues to maintain the original direction to be transmitted to the inner surfaces of the first ellipsoidal reflection surface and the second ellipsoidal reflection surface, the light is reflected by the inner surfaces of the first ellipsoidal reflection surface and the second ellipsoidal reflection surface and converges to the lower focus of the first ellipsoidal reflection surface and the second ellipsoidal reflection surface, hits the concentrator from the lower focus, and then passes through the concentrator to become collimated light to be emitted. The light passes through the first ellipsoidal reflective surface and the second ellipsoidal reflective surface, and is continuously reflected on the inner surfaces of the first ellipsoidal reflective surface and the second ellipsoidal reflective surface. The more times of reflection, the more conducive to light mixing, thereby making the overall light pattern emitted by the car lamp clear without obvious dark spots, light bleeding and other defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural diagram of the core component of the vehicle lamp of the utility model;

[0029] Figure 2 It is a cross-sectional structural schematic diagram of the core component of the vehicle lamp of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the ellipsoidal confocal light mixing system of the vehicle lamp of the utility model;

[0031] Figure 4 It is a light path principle diagram of the vehicle lamp of the utility model;

[0032] Figure 5 It is a structural schematic diagram of the light-incoming surface of the ellipsoidal confocal light-mixing system of the vehicle lamp of the utility model;

[0033] Figure 6 It is a schematic diagram showing that the upper focus of the ellipsoidal confocal light mixing system of the vehicle lamp of the utility model coincides with the two optical centers of the dual-core LED light source.

[0034] In the figure: a first ellipsoidal polarizing portion 1, a first ellipsoidal reflecting surface 11, a second ellipsoidal polarizing portion 2, a second ellipsoidal reflecting surface 21, a light incident surface 3, an upper focus 4, a lower focus 5, a concentrator 6, a bottom surface 61, an inner side surface 62, a light emitting surface 63, a dual-core LED light source 7, an optical center 71, a shell 8, and a circuit board 9. DETAILED DESCRIPTION

[0035] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0036] Embodiment 1:

[0037] See also Figures 1 to 6 As shown, this embodiment provides an ellipsoidal confocal mixing light system, including: a first ellipsoidal polarizing portion 1 and a second ellipsoidal polarizing portion 2 connected side by side; the first ellipsoidal polarizing portion 1 and the second ellipsoidal polarizing portion 2 are respectively connected along their short axis directions. Here, the shapes of the first ellipsoidal polarizing portion 1 and the second ellipsoidal polarizing portion 2 are both ellipsoidal structures. For the ellipsoidal structure, it has a long axis direction and a short axis direction. In this embodiment, the first ellipsoidal polarizing portion 1 and the second ellipsoidal polarizing portion 2 are connected in the short axis direction, and the long axis direction is a relatively inclined structure.

[0038] On the basis of the above structure, it is necessary to further explain that, firstly, the top ends of the first ellipsoid polarizing portion 1 and the second ellipsoid polarizing portion 2 are cut to form spherical concave surfaces, and each spherical concave surface forms a light incident surface 3 .

[0039] Second, see Figure 6 As shown, the side surface of the first ellipsoid polarizing portion 1 is the first ellipsoid side surface, and the first ellipsoid side surface forms a first ellipsoid reflecting surface 11; the center of the light incident surface 3 on the first ellipsoid polarizing portion 1 coincides with the upper focus 4 in the long axis direction of the first ellipsoid reflecting surface 11.

[0040] The side surface of the second ellipsoid polarizing portion 2 is the side surface of the second ellipsoid, and the side surface of the second ellipsoid forms a second ellipsoid reflecting surface 21; the center of the light-incoming surface 3 on the second ellipsoid polarizing portion 2 coincides with the upper focus 4 in the long-axis direction of the second ellipsoid reflecting surface 21. The inclined arrangement of the first ellipsoid polarizing portion 1 and the second polarizing portion in the long-axis direction makes the lower focus 5 in the long-axis direction of the first ellipsoid reflecting surface 11 coincide with the lower focus 5 in the long-axis direction of the second ellipsoid reflecting surface 21, that is, the overall ellipsoid confocal light mixing system has only one lower focus 5 in its long-axis direction.

[0041] Based on the above situation, it should be noted that, in an optional implementation, the first ellipsoidal polarizing portion 1 and the second ellipsoidal polarizing portion 2 are integrally formed.

[0042] In addition, in another optional implementation, the light incident surfaces 3 of the first ellipsoidal polarizing portion 1 and the second ellipsoidal polarizing portion 2 are both provided with diffusion patterns or leather patterns, which can improve the uniformity of light irradiation.

[0043] Embodiment 2:

[0044] See also Figures 1 to 6 As shown, based on the ellipsoidal confocal light mixing system of Example 1, this embodiment provides a vehicle lamp, comprising: a shell 8, and a light source assembly and a condenser 6 arranged in the shell 8, and the ellipsoidal confocal light mixing system of Example 1; wherein the light source assembly comprises a circuit board 9 and a dual-core LED light source 7 arranged on the circuit board 9; and the ellipsoidal confocal light mixing system is arranged between the dual-core LED light source 7 and the condenser 6; and the focusing end of the condenser 6 is arranged toward the ellipsoidal confocal light mixing system.

[0045] Since there is a certain distance between the two chips of the dual-core LED light source 7 in the package, there is also a distance between the light spots produced by the two chips themselves, and the boundary between the cold and warm light spots is particularly obvious when lit. Therefore, in order to make them mixed evenly, the light input end or the light output end must be mixed for a distance so that the two light spots can be mixed into one light spot. Therefore, this embodiment achieves the mixing of light spots by using an ellipsoidal confocal mixing system with only one lower focus 5 in the long axis direction.

[0046] It should be noted that, in an optional implementation, the ellipsoidal confocal light mixing system is made of a transparent material, and the condenser 6 is also made of a transparent material.

[0047] On the basis of the above structure, the dual-core LED light source 7 used in this embodiment has two optical centers 71, one of which coincides with the center of the light-entering surface 3 of the first ellipsoid polarizing portion 1, and the other coincides with the center of the light-entering surface 3 of the second ellipsoid polarizing portion 2. In this structure, one optical center 71 coincides with the upper focus 4 in the long axis direction of the first ellipsoid reflective surface 11, and the other optical center 71 coincides with the upper focus 4 in the long axis direction of the second ellipsoid reflective surface 21. In this way, none of the two chips of the dual-core LED light source 7 will be out of focus, and the utilization rate of light is the highest. Based on this, the light emitted by the dual-core LED light source 7 will not be refracted when entering the ellipsoid confocal mixing system, and can continue to move in the original direction.

[0048] Next, it should be explained in conjunction with the drawings that the light-collecting end is a structure that is convex backward as a whole, concave at the center, and the bottom surface 61 of the concave is convex backward; the inner side surface 62 of the concave is a curved surface that has a collimating effect on light, and the bottom surface is a rotational curved surface, and its rotation centerline passes forward through the light-emitting surface 63 of the concentrator 6. In this regard, it is necessary to explain that the end portion of the ellipsoidal confocal light mixing system facing away from the dual-core LED light source 7 extends into the light-collecting end, thereby allowing as much light as possible emitted from the ellipsoidal confocal light mixing system to enter the light-collecting end.

[0049] Here, in an optional implementation, a diffusion pattern or leather texture is arranged on the light emitting surface 63. This design allows the light to be more evenly hit the irradiation surface or irradiation direction, thereby improving the uniformity of the light output of the vehicle lamp.

[0050] For the vehicle light of the present embodiment, according to the optical characteristic that the light emitted from one focus of the ellipsoidal reflecting surface will converge to another focus after being reflected by the inner surface of the ellipsoid, the light emitted by the two optical centers 71 of the dual-core LED light source 7 and formed after passing through the upper focus 4 of the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21 will converge to the lower focus 5 of the ellipsoidal confocal light mixing system in the direction of its long axis, where the lower focus 5 of the ellipsoidal confocal light mixing system is the virtual focus of the condenser 6. Under this structure, the light incident surface 3 of the second ellipsoidal polarized light of the first ellipsoidal polarizing part 1 receives the light emitted by the dual-core LED light source 7 and continues to maintain the original direction to be transmitted to the inner surfaces of the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21. The light is reflected by the inner surfaces of the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21 and converges to the lower focus 5 of the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21, hits the condenser 6 from the lower focus 5, and then passes through the condenser 6 to become collimated light to be emitted. The light passes through the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21, and is continuously reflected on the inner surfaces of the first ellipsoidal reflecting surface 11 and the second ellipsoidal reflecting surface 21. The more times of reflection, the more conducive to light mixing, thereby making the overall light pattern emitted by the car lamp clear without obvious dark spots, light bleeding and other defects.

[0051] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0052] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An ellipsoidal confocal light mixing system, It is characterized in that include: The first ellipsoid polarizing portion and the second ellipsoid polarizing portion are connected side by side; the first ellipsoid polarizing portion and the second ellipsoid polarizing portion are connected along the short axis direction thereof respectively; wherein The top ends of the first ellipsoid polarizing portion and the second ellipsoid polarizing portion are cut to form spherical concave surfaces, and each of the spherical concave surfaces forms a light incident surface; and The side surface of the first ellipsoid polarizing portion is a first ellipsoid side surface, and the first ellipsoid side surface forms a first ellipsoid reflecting surface; the center of the light incident surface on the first ellipsoid polarizing portion coincides with the upper focus in the long axis direction of the first ellipsoid reflecting surface; The side surface of the second ellipsoid polarizing portion is a second ellipsoid side surface, and the second ellipsoid side surface forms a second ellipsoid reflecting surface; the center of the light incident surface on the second ellipsoid polarizing portion coincides with the upper focus in the long axis direction of the second ellipsoid reflecting surface; The lower focus of the first ellipsoidal reflecting surface in the long axis direction coincides with the lower focus of the second ellipsoidal reflecting surface in the long axis direction.

2. The ellipsoidal confocal light mixing system according to claim 1, It is characterized in that The long axes of the first ellipsoidal polarizing portion and the second ellipsoidal polarizing portion are arranged in an inclined structure.

3. The ellipsoidal confocal light mixing system according to claim 1 or 2, It is characterized in that The first ellipsoid polarizing portion and the second ellipsoid polarizing portion are integrally formed.

4. The ellipsoidal confocal light mixing system according to claim 1 or 2, It is characterized in that The light incident surfaces of the first ellipsoid polarizing portion and the second ellipsoid polarizing portion are both provided with diffusion patterns or leather patterns.

5. A car light, It is characterized in that include: A housing, a light source assembly and a condenser arranged in the housing, and an ellipsoidal confocal light mixing system as claimed in any one of claims 1 to 4; in The light source assembly includes a circuit board and a dual-core LED light source arranged on the circuit board; and The ellipsoid confocal light mixing system is arranged between the dual-core LED light source and the condenser; the focusing end of the condenser is arranged toward the ellipsoid confocal light mixing system; The dual-core LED light source has two optical centers, one of which coincides with the center of the light incident surface of the first ellipsoid polarizing portion, and the other coincides with the center of the light incident surface of the second ellipsoid polarizing portion.

6. The vehicle lamp according to claim 5, It is characterized in that The light-focusing end is a structure that is convex backward as a whole, concave at the center, and the bottom surface of the concave is convex backward; The inner side surface of the recess is a curved surface that has a collimating effect on light, and the bottom surface is a rotation curved surface, and its rotation center line passes forward through the light-emitting surface of the concentrator.

7. The vehicle lamp according to claim 6, It is characterized in that The end portion of the ellipsoidal confocal light mixing system facing away from the dual-core LED light source extends into the focusing end.

8. The vehicle lamp according to claim 6 or 7, It is characterized in that The light emitting surface is arranged with diffusion patterns or leather patterns.

9. The vehicle lamp according to any one of claims 5 to 7, It is characterized in that The ellipsoid confocal light mixing system is made of transparent material.

10. The vehicle lamp according to any one of claims 5 to 7, It is characterized in that The concentrator is made of transparent material.

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