Optical structure capable of improving light spot effect of headlamp lampshade

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an optical structure capable of improving the light spot effect of a lampshade of a headlamp, which is arranged between a light source and an imaging unit and comprises a first optical unit, a second optical unit and a third optical unit, the second optical unit is located in the light emitting direction of the first optical unit, and patterns for changing light distribution of the first optical unit are arranged on the second optical unit. According to the optical structure capable of improving the light spot effect of the headlamp lampshade, distribution of light emitted from the first optical unit can be conveniently changed through the patterns on the second optical unit, for example, dark rings of light condensers can be relieved, or the problem that light spots are discontinuous due to arrangement of a plurality of light condensers is solved; the horizontal light distribution is changed through the patterns of the second optical units so as to realize the connection of the adjacent condensers.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to an optical structure capable of improving the light spot effect of a headlamp lampshade. Background Art

[0002] Reflectors and concentrators are typically used as the primary optical system to achieve high and low beam functions. In many optical systems, these primary optical units are often located approximately twice the focal length of the imaging unit. Therefore, when the lampshade is approximately twice the focal length from the lens, a clear image of the primary optical system is formed. This is especially true for concentrators, which can easily form concentrator shapes on the lampshade.

[0003] However, more and more OEM customers now want the light spot on the mask to be continuous and uniform, and cannot accept the above-mentioned light spot shape. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem of discontinuous and uneven distribution of light spots in the prior art, the present invention provides an optical structure that can enhance the light spot effect of a headlamp shade.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an optical structure capable of improving the light spot effect of the headlamp shade, which is arranged between the light source and the imaging unit, and includes a first optical unit for preliminarily shaping the light emitted by the light source; a second optical unit, which is located in the light emitting direction of the first optical unit, and has a pattern on the second optical unit for changing the light distribution of the first optical unit.

[0006] The utility model provides an optical structure capable of improving the light spot effect of a headlamp lampshade. The pattern on the second optical unit facilitates changing the light distribution emitted from the first optical unit. For example, it can alleviate the dark ring of the concentrator, or solve the discontinuous light spot caused by the arrangement of multiple concentrators. That is, the pattern of the second optical unit changes the horizontal light distribution to achieve the connection of adjacent concentrators.

[0007] Furthermore, the first optical unit and the second optical unit are integrally formed or separated into two structures.

[0008] Furthermore, when the first optical unit and the second optical unit are integrally formed, the surface of the second optical unit is composed of a plurality of patterns; when the first optical unit and the second optical unit are separated into two structures, at least one surface of the second optical unit has a pattern.

[0009] Furthermore, when the first optical unit and the second optical unit are integrally formed, there is a certain distance between the first optical unit and the second optical unit.

[0010] Furthermore, the second optical unit and the imaging unit are integrally formed.

[0011] Furthermore, the second optical unit is a transparent refractive unit, which includes a light input unit and a light output unit, and the light input unit or the light output unit has patterns arranged in a horizontal direction.

[0012] Furthermore, the arrangement trend of the patterns follows the contour line shape of the second optical unit in the horizontal direction.

[0013] Furthermore, the second optical unit is a reflection unit, and the reflection unit has a pattern.

[0014] Furthermore, the imaging unit is a lens or a reflector to image the light distribution at the focal plane.

[0015] Furthermore, the first optical unit is a reflector or a condenser.

[0016] The beneficial effects of the present invention are:

[0017] The pattern on the second optical unit facilitates changing the light distribution emitted from the first optical unit, for example, alleviating the dark ring of the concentrator, or resolving the discontinuity of the light spot caused by the arrangement of multiple concentrators, that is, the connection of adjacent concentrators is achieved by changing the horizontal light distribution through the pattern of the second optical unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of an overall optical structure in the present invention that can enhance the light spot effect of a headlamp shade.

[0020] Figure 2 This is a light propagation diagram of Example 1 in the vertical plane of the present utility model.

[0021] Figure 3 This is a light propagation diagram of Example 1 in the vertical plane of the present utility model.

[0022] Figure 4 It is a structural schematic diagram of the third embodiment of the present invention in a vertical plane.

[0023] In the figure: 1. first optical unit; 2. second optical unit; 3. imaging unit. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do 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 invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] The utility model discloses an optical structure capable of improving the light spot effect of a headlamp lampshade.

[0027] Reference Figure 1 An optical structure capable of enhancing the light spot effect of a headlamp shade is provided between a light source and an imaging unit 3, and comprises a first optical unit 1 and a second optical unit 2. The first optical unit 1 is used to preliminarily shape the light emitted by the light source. The second optical unit 2 is located between the focal points of the first optical unit 1 and the imaging unit 3, that is, the second optical unit 2 is located in the light emitting direction of the first optical unit 1. The second optical unit 2 has a pattern for changing the light distribution of the first optical unit 1. The pattern on the second optical unit 2 facilitates changing the light distribution emitted from the first optical unit 1, such as alleviating the dark ring of the concentrator, or solving the discontinuity of the light spot caused by the arrangement of multiple concentrators, that is, the horizontal light distribution is diffused by the pattern of the second optical unit 2 to achieve the connection of adjacent concentrators, so that the light spot is continuous and uniform.

[0028] Specifically, the first optical unit 1 and the second optical unit 2 are integrally formed or separated into two structures.

[0029] Example 1:

[0030] Reference Figure 2The first optical unit 1 can be a concentrator or a reflector. This description uses a concentrator as an example; the principles behind reflectors are similar and will not be further elaborated. The second optical unit 2 can be a transparent refractive unit, comprising a light input unit and a light output unit. The light input unit or the light output unit can have a horizontally arranged pattern, with the pattern's arrangement following the horizontal contour of the second optical unit 2. Vertical patterns can be added or omitted as needed. For high and low beam headlights, the combined action of the first and second optical units 1 and 2 must ensure a uniform light distribution in the focal plane of the imaging unit 3. The pattern of the second optical unit 2 is used to modify the light distribution originally emitted from the first optical unit 1. For example, dark rings on the concentrator can be alleviated. Furthermore, the discontinuous light spots caused by the original arrangement of multiple concentrators can be connected by altering the horizontal light distribution using the pattern of the second optical unit 2.

[0031] In this case, the first optical unit 1 and the second optical unit 2 are separated into two structures, and at least one surface of the second optical unit 2 has a pattern.

[0032] Reference Figure 3 The second optical unit 2 can also be integrally formed with the imaging unit 3.

[0033] Example 2:

[0034] This differs from the first embodiment in that the first optical unit 1 and the second optical unit 2 are integrally formed, and the surface of the second optical unit 2 is formed with multiple patterns. Furthermore, when the first and second optical units 1 and 2 are integrally formed, a certain distance is maintained between them, which enhances the light spot effect. In this embodiment, the focal point of the imaging unit 3 is located between the second optical unit 2 and the imaging unit 3.

[0035] Example 3:

[0036] When applied to a low beam module, when the shape of the light-dark cut-off line is horizontal, the second optical unit may be located between the imaging unit and the focus of the imaging unit.

[0037] In this case, when the second optical unit and the imaging unit are independent parts, at least one surface of the second optical unit has a pattern; when the second optical unit and the imaging unit are integrated, the surface of the second optical unit has a pattern, and the surface of the second optical unit can be located at the light incident part of the imaging unit.

[0038] Alternatively, the pattern of the second optical unit is at the light exit portion of the imaging unit, and in this case the second optical unit is not located between the imaging unit and the focus.

[0039] Example 4:

[0040] The second optical unit 2 is a reflection unit having a pattern thereon.

[0041] The imaging unit 3 may be a lens or a reflector, and any optical unit that can image the light distribution at the focal plane may be used.

[0042] Working Principle: The typical primary optical unit 1 is typically located approximately twice the focal length of the imaging unit 3. According to the principles of lens imaging, when the object distance = 2f (f is the focal length of the imaging unit 3), an inverted, equal-sized real image is formed at 2f. This means that when the lampshade is 2f from the imaging portion, a clear image of the first optical unit 1 is visible on the lampshade. Even if the lampshade deviates from 2f by a certain distance, the image of the first optical unit 1 is still visible, albeit not as clear as at 2f. However, this resulting pattern is still not what the OEM customer desires and is discontinuous. If the primary optical unit 1 is a reflector, a mirror image is produced. The number of reflectors in the primary unit will result in an equal number of reflected images on the lampshade, and the light spot on the lampshade is discontinuous. This phenomenon is even more severe if the primary optical unit 1 is a concentrator. This is due to the concentrator's structure. The emitted light from the concentrator is distributed as a bright circle in the center, a dark circle on the outside, and a dark ring between the center and the outside. This pattern is then produced on the lampshade. In summary, in order to improve the above problems, in principle, it is necessary to change the distribution of light emitted from the first optical unit 1 . Therefore, the present application changes the distribution of light emitted from the first optical unit 1 through the pattern on the second optical unit 2 .

[0043] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. An optical structure capable of improving the light spot effect of a headlamp shade, arranged between a light source and an imaging unit (3), characterized in that: include A first optical unit (1) is used for preliminarily shaping the light emitted by the light source; The second optical unit (2) is located in the light emitting direction of the first optical unit (1), and the second optical unit (2) has a pattern for changing the light distribution of the first optical unit (1).

2. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 1, characterized in that: The first optical unit (1) and the second optical unit (2) are integrally formed or separated into two structures.

3. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 2, characterized in that: When the first optical unit (1) and the second optical unit (2) are integrally formed, the surface of the second optical unit (2) is composed of a plurality of patterns; When the first optical unit (1) and the second optical unit (2) are separated into two structures, at least one surface of the second optical unit (2) has a pattern.

4. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 2, characterized in that: When the first optical unit (1) and the second optical unit (2) are integrally formed, there is a certain distance between the first optical unit (1) and the second optical unit (2).

5. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 1, characterized in that: The second optical unit (2) and the imaging unit (3) are integrally formed.

6. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 5, characterized in that: The second optical unit (2) is a transparent refractive unit, comprising a light input unit and a light output unit, wherein the light input unit or the light output unit has a pattern arranged in a horizontal direction.

7. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 6, characterized in that: The arrangement trend of the pattern follows the contour line shape of the second optical unit (2) in the horizontal direction.

8. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 1, characterized in that: The second optical unit (2) is a reflection unit, and the reflection unit has a pattern.

9. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 1, characterized in that: The imaging unit (3) is a lens or a reflector for imaging the light distribution at the focal plane.

10. The optical structure capable of improving the light spot effect of a headlamp shade according to claim 1, characterized in that: The first optical unit (1) is a reflector or a condenser.

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