Optical structure for converting parallel light into linear light source, illumination module and vehicle

Abstract

The utility model discloses an optical structure used for converting parallel light into a linear light source, an illumination module and a vehicle, the optical structure comprises a collimation unit and a reflection unit, the collimation unit is suitable for collimating and correcting incident light emitted by the light source, the reflection unit is suitable for receiving the incident light collimated and corrected by the collimation unit, and the reflection unit is suitable for reflecting the incident light emitted by the light source. And the incident light is reflected by the reflection unit so as to convert the collimated and corrected incident light into a linear light source. According to the utility model, the incident light emitted by the light source can be utilized to the greatest extent after sequentially passing through the collimation unit and the reflection unit; by designing the size of the imaging unit, the light reflected by the reflection unit can be received to the greatest extent; the occupied space of the whole optical structure is small; the focal line of the imaging unit is positioned in the negative direction of the light emitting direction of the reflecting unit, so that a higher illumination value can be obtained in a smaller occupied space; dispersion is small or almost no dispersion exists; when the imaging unit is a reflector, there is almost no dispersion and the light distribution is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp lighting, and in particular to an optical structure for converting parallel light into a linear light source. In addition, it also relates to a lighting module and a vehicle. Background Art

[0002] The existing solution that can realize the conversion of parallel light into a line light source is composed of a collimating optical unit, a cylindrical refraction light output unit and a cylindrical imaging unit; the cylindrical refraction light output unit realizes the conversion of the parallel light collimated by the collimating optical unit into a virtual focus line; the focal line of the cylindrical imaging unit coincides with the virtual focus line, and the light distribution at the virtual focus line is imaged. This solution can achieve higher optical efficiency, uniform light distribution, a shorter front-to-back distance in the light output direction, and a smaller footprint. However, since this solution uses a lens for imaging, dispersion problems will occur.

[0003] In order to solve the above problems, it is necessary to design an optical structure for converting parallel light into a linear light source to alleviate or even avoid the above dispersion problem. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the utility model provides an optical structure for converting parallel light into a linear light source, which can avoid or reduce the dispersion problem.

[0006] According to the first aspect of the utility model, an optical structure for converting parallel light into a line light source is provided, comprising a collimating unit and a reflecting unit, wherein the collimating unit is suitable for collimating and correcting incident light emitted by the light source, and the reflecting unit is suitable for receiving the incident light after collimation and correction by the collimating unit, and reflecting the incident light via the reflecting unit to convert the collimated and corrected incident light into a line light source.

[0007] Preferably, the reflecting surface of the reflecting unit is a parabolic cylinder, and its contour line is a parabola.

[0008] Further preferably, the contour line is stretched along the normal direction of the plane where the contour line is located to form the parabolic cylindrical reflection unit.

[0009] Preferably, the collimating unit and the reflecting unit are arranged in a vertical direction, and an imaging unit is arranged in a driving direction, the imaging unit is a cylinder, and a focal line of the cylinder coincides with a focal line of the reflecting unit.

[0010] Further preferably, the collimating unit, the reflecting unit and the imaging unit are integrally formed to form a one-piece component. The collimating unit, the reflecting unit and the imaging unit are integrally formed to form a one-piece component.

[0011] Preferably, an imaging unit is arranged along the driving direction, the focal line of the imaging unit coincides with the focal line of the reflecting unit, the imaging unit comprises a light input portion and a light output portion, and the contour line of the imaging unit in the vertical plane is plano-convex or bi-convex.

[0012] Further preferably, the imaging unit is provided in the light emitting direction of the reflecting unit, and the imaging unit is a cylindrical refractive unit, the contour line of the cylindrical refractive unit in the vertical plane is a circular arc, and the center of the circular arc is located at the focus of the reflecting unit, and the radius of the circular arc is greater than the focal length of the parabola.

[0013] Preferably, an imaging unit is arranged along the driving direction, the imaging unit is a parabolic reflector, and in a vertical plane, the focus of the imaging unit coincides with the focus of the reflecting unit, and the focal length is greater than the focal length of the reflecting unit.

[0014] The beneficial effects of the utility model are that the incident light emitted by the light source can be utilized to the maximum extent after passing through the collimating unit and the reflecting unit in sequence; by designing the size of the imaging unit, the light reflected from the reflecting unit can be received to the maximum extent; the overall optical structure occupies a small space; because the focal line of the imaging unit is located in the negative direction of the light emitting direction of the reflecting unit, a higher illumination value can be obtained in a smaller space; the dispersion is small or almost non-existent; when the imaging unit is a reflector, there is almost no dispersion and the light distribution is uniform.

[0015] The second aspect of the utility model provides a lighting module, which adopts the optical structure for converting parallel light into a linear light source as described in the first aspect of the utility model.

[0016] A third aspect of the utility model provides a vehicle, which adopts a lighting module provided by the second aspect of the utility model.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1This is a schematic diagram of the structure of a thick-walled structural unit of the utility model that realizes uniform light emission at large intervals of light sources;

[0021] Figure 2 This is a schematic diagram of the first structure of the thick-walled structural unit of the utility model that realizes uniform light emission at large intervals with the addition of an imaging unit;

[0022] Figure 3 A schematic diagram of a second structure of the utility model after adding an imaging unit to the thick-walled structural unit that realizes uniform light emission at large intervals from the light source;

[0023] Figure 4 A schematic diagram of a third structure of the utility model after adding an imaging unit to the thick-walled structural unit that realizes uniform light emission at large intervals from the light source;

[0024] Figure 5 Schematic diagram of the structure in which the collimating unit and the reflecting unit are separated as independent components.

[0025] Reference numerals

[0026] 1. Collimation unit; 2. Reflection unit; 3. Imaging unit. DETAILED DESCRIPTION

[0027] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0028] In the description of the present invention, it should be understood that the terms "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] See also Figure 1 An optical structure for converting parallel light into a line light source in a specific embodiment of the utility model includes a collimating unit 1 and a reflecting unit 2. The collimating unit 1 is suitable for collimating and correcting the incident light emitted by the light source to form parallel light or quasi-parallel light, and then the incident light formed as parallel light or quasi-parallel light after collimation and correction by the collimating unit 1 is received by the reflecting unit 2, and the incident light is reflected by the reflecting unit 2, so that the collimated and corrected incident light can be converted into a line light source.

[0030] Specifically, the collimating unit 1 can adopt a condenser optical element, and the incident light emitted by the light source can be collimated and corrected by the condenser optical element. The reflecting unit 2 is set as a parabola, and the contour line of the reflecting unit 2 is a parabola, which has a focus F. In addition, the contour line is stretched along the normal of the plane where it is located to form a parabola reflecting unit 2, and the light reflected by the collimating unit 1 and the reflecting unit 2 converges in the opposite direction to the virtual focus line, which is the focal line of the reflecting unit 2. In addition, in the vertical plane, after the collimated light passing through the condenser is reflected on the surface of the reflecting unit 2, the reverse extension line of the reflected light converges at the focus F, which is the focus of the reflecting unit 2. Therefore, when the light emitted by the light source passes through the collimating unit 1 and the reflecting unit 2, it can realize the collimation of the incident light into parallel light and convert the parallel light into a line light source. And after the incident light emitted by the light source passes through the collimating unit 1 and the reflecting unit 2, it can be used to the maximum extent and receive all the light reflected from the reflecting unit 2. In addition, the overall space occupied by the optical structure is small. Since the focal line of the imaging unit 3 is located in the negative direction of the light emitting direction of the reflecting unit 2, a higher illumination value can be obtained in a smaller space and the light distribution can be uniform.

[0031] See also Figure 2 , the collimating unit 1 and the reflecting unit 2 are arranged in the vertical direction, and an imaging unit 3 is also arranged in the driving direction, and the imaging unit 3 is set as a cylinder, and the focal line of the cylindrical imaging unit 3 coincides with the focal line of the reflecting unit 2. Therefore, in the vertical plane, the collimated light emitted by the collimating unit 1 is reflected by the reflecting unit 2 and then enters the imaging unit 3, and then refracts the reflecting unit 2 by the imaging unit 3, so that the incident light rays passing through the imaging unit 3 are emitted in parallel with each other.

[0032] Specifically, the contour line in the vertical plane is stretched along the normal direction of the plane where the contour line is located to form the imaging unit 3. The contour line of the imaging unit 3 is a curve.

[0033] More specifically, the collimating unit 1 , the reflecting unit 2 and the imaging unit 3 are suitable for being integrally formed to form an integral piece.

[0034] See also Figure 3 The imaging unit 3 is also arranged along the driving direction, and includes a light input portion and a light output portion, and in the vertical plane, the contour line of the imaging unit 3 is planoconvex or biconvex. In addition, the imaging unit 3 is a cylindrical lens, and the focal line of the imaging unit 3 coincides with the focal line of the reflection unit 2.

[0035] Specifically, in the light emitting direction of the reflecting unit 2, the imaging unit 3 is set as a cylindrical refraction unit, the contour line of the cylindrical refraction unit in the vertical plane is a circular arc, and the center of the circular arc is located at the focus of the reflecting unit 2, and the radius of the circular arc is greater than the focal length of the parabola, so that in the vertical plane, after the incident light is reflected by the reflecting unit 2 and then refracted by the cylindrical refraction unit, the emitting direction of the incident light does not change.

[0036] See also Figure 4 , wherein the imaging unit 3 is configured as a parabolic reflector. In the vertical plane, the focus of the imaging unit 3 coincides with the focus of the reflector 2, and the focal length of the imaging unit 3 is greater than the focal length of the reflector 2, and the imaging unit 3 is formed by stretching a parabola along the normal direction of the plane in which it is located. Since the imaging unit 3 is configured as a reflector, there is almost no dispersion.

[0037] See also Figure 5 The collimating unit 1 and the reflecting unit 2 can be separated and used in combination as separate independent parts. The reflecting unit 2 is arranged on the light output path of the collimating unit 1 to receive the incident light that has been collimated and corrected by the collimating unit 1, and aluminum is plated on the surface of the reflecting unit 2 to form an aluminum reflecting surface. The aluminum reflecting surface can reflect the incident light that hits its surface, so as to convert the collimated and corrected incident light into a line light source.

[0038] The utility model provides a lighting module, which adopts the optical structure for converting parallel light into a linear light source as described in any of the above embodiments of the utility model.

[0039] The utility model provides a vehicle, which adopts the lighting module described in any one of the above embodiments of the utility model.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above description is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An optical structure for converting parallel light into a linear light source, characterized in that: The invention comprises a collimating unit (1) and a reflecting unit (2), wherein the collimating unit (1) is suitable for collimating and correcting incident light emitted by a light source, and the reflecting unit (2) is suitable for receiving the incident light after collimation and correction by the collimating unit (1), and reflecting the incident light via the reflecting unit (2) to convert the collimated and corrected incident light into a line light source.

2. The optical structure for converting parallel light into a linear light source according to claim 1, characterized in that: The reflecting surface of the reflecting unit (2) is a parabolic cylinder, and its contour line is a parabola.

3. The optical structure for converting parallel light into a linear light source according to claim 2, characterized in that: The contour line is stretched along the normal direction of the plane where it is located to form the parabolic cylindrical reflection unit (2).

4. The optical structure for converting parallel light into a linear light source according to claim 3, characterized in that: The collimating unit (1) and the reflecting unit (2) are arranged in a vertical direction, and an imaging unit (3) is arranged in a driving direction; the imaging unit (3) is a cylinder, and the focal line of the cylinder coincides with the focal line of the reflecting unit (2).

5. The optical structure for converting parallel light into a linear light source according to claim 4, characterized in that: The collimating unit (1), the reflecting unit (2) and the imaging unit (3) are integrally formed to form a one-piece component.

6. The optical structure for converting parallel light into a linear light source according to claim 2, characterized in that: An imaging unit (3) is arranged along the driving direction, the focal line of the imaging unit (3) coincides with the focal line of the reflecting unit (2), the imaging unit (3) comprises a light input portion and a light output portion, and the contour line of the imaging unit (3) in a vertical plane is planoconvex or biconvex.

7. The optical structure for converting parallel light into a linear light source according to claim 6, characterized in that: The imaging unit (3) is provided in the light emitting direction of the reflecting unit (2); the imaging unit (3) is a cylindrical refractive unit; the contour line of the cylindrical refractive unit in a vertical plane is a circular arc, the center of the circular arc is located at the focus of the reflecting unit (2), and the radius of the circular arc is greater than the focal length of the parabola.

8. The optical structure for converting parallel light into a linear light source according to claim 2, characterized in that: An imaging unit (3) is arranged along the driving direction, the imaging unit (3) is a parabolic reflector, and in a vertical plane, the focus of the imaging unit (3) coincides with the focus of the reflective unit (2), and the focal length is greater than the focal length of the reflective unit (2).

9. A lighting module, characterized in that: The optical structure for converting parallel light into a linear light source as described in any one of claims 1 to 8 is adopted.

10. A vehicle, characterized in that: Comprising the lighting module described in claim 9.

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