Optical structure and vehicle lamp

Abstract

The utility model relates to the field of optics, in particular to the field of automobile illumination, in particular to an optical structure and an automobile lamp, and the optical structure comprises a primary optical unit, a secondary optical unit, a secondary optical unit and a light source, a first imaging unit having a refractive function; the second imaging unit is used for receiving light refracted by the first imaging unit and reflecting the light, and the focus of the second imaging unit in the plane B coincides with the focus of the first imaging unit in the plane A; wherein the plane A is perpendicular to the plane B, the plane A is a collimation plane of the first imaging unit, the plane B is a collimation plane of the second imaging unit, and at least two of the first imaging unit, the second imaging unit and the primary optical unit are integrally formed. The vehicle lamp comprises the optical structure. The primary optical unit, the first imaging unit and the second imaging unit are integrally formed, so that the assembly tolerance is reduced, and the stability of the optical performance is improved.

Description

Technical Field

[0001] The present application relates to the field of optics, in particular to the field of automotive lighting, and specifically to an optical structure and a vehicle lamp. Background Art

[0002] The existing optical system for realizing the function of headlights needs to include at least a light source, a primary optical system, and an imaging unit. Among them, the primary optical system and the imaging unit are independent components and need to be connected through intermediate components. At this time, the assembly tolerance has a certain impact on the optical stability of the headlights. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing vehicle headlight structure has poor optical stability and is complicated to assemble.

[0004] To this end, the utility model provides an optical structure and a vehicle lamp.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An optical structure comprising:

[0007] A primary optical unit, the primary optical unit is used to receive light emitted by the light source and perform secondary distribution on the light;

[0008] A first imaging unit, wherein the first imaging unit has a refraction function;

[0009] A second imaging unit, the second imaging unit is used to receive the light refracted from the first imaging unit and reflect it, and the focus of the second imaging unit in plane B coincides with the focus of the first imaging unit in plane A;

[0010] Among them, plane A and plane B are perpendicular to each other, plane A is the collimating plane of the first imaging unit, plane B is the collimating plane of the second imaging unit, and at least two of the first imaging unit, the second imaging unit and the primary optical unit are integrally formed.

[0011] By adopting the above technical solution, at least two of the first imaging unit, the second imaging unit, and the primary optical unit are integrally formed, thereby eliminating the need for intermediate connecting parts between the three, reducing assembly tolerances, improving the stability of optical performance, and eliminating assembly steps, thereby improving production efficiency and reducing production costs.

[0012] Furthermore, the contour line of the first imaging unit in plane A is a first contour line, the first contour line includes at least one arc line, and the first contour line has a focus F in plane A, that is, the focus of the first imaging unit in plane A.

[0013] Further, the first contour line is rotated around a horizontal axis passing through the focus and extending in a direction perpendicular to plane B to form a first imaging unit.

[0014] Further, a contour line of the second imaging unit in plane B is a second contour line, and the second contour line includes a parabola.

[0015] Further, a section line of the second imaging unit in a plane perpendicular to plane A and perpendicular to plane B is a straight line or a curve.

[0016] Further, the second contour line extends in a direction perpendicular to plane B to form a second imaging unit.

[0017] A vehicle lamp comprises the optical structure as described above.

[0018] The beneficial effect of the utility model is that the present application eliminates the need for intermediate connecting parts between the first imaging unit, the second imaging unit, and the primary optical unit by integrally molding at least two of the three, thereby reducing assembly tolerances, improving the stability of optical performance, and eliminating assembly steps, thereby improving production efficiency and reducing production costs.

[0019] After passing through the primary optical unit, the light emitted by the light source is secondarily distributed, for example, distributed into regular light; the light after the second distribution is refracted by the first imaging unit, and then reflected by the second imaging unit before being emitted.

[0020] The principle of light is: the light emitted from the focus F of the imaging component is refracted by the first imaging unit and then passes through the second reflecting unit. The imaging component collimates and images the light emitted from the focus F in two mutually perpendicular planes, thereby improving the uniformity of the light output of the headlight structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the optical structure in the utility model.

[0023] Figure 2 It is a schematic diagram of the optical path of light passing through the imaging component in the XZ plane in the utility model.

[0024] Figure 3 It is a light path propagation path diagram of the optical structure in the utility model.

[0025] Figure 4 It is a light path diagram of the light passing through the first imaging unit in the YZ plane in the utility model.

[0026] In the figure: 1, primary optical unit; 2, imaging assembly; 21, first imaging unit; 22, second 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 utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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 utility model 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] Reference Figure 1-4 An optical structure includes a light source, a primary optical unit 1 and an imaging component 2. The primary optical unit 1 and the imaging component 2 are integrally formed. The primary optical unit 1 can be a reflector or a concentrator. The imaging component 2 is used to collimate the light passing through the focus of the imaging component 2 and emit it parallel or approximately parallel to each other.

[0032] The imaging assembly 2 includes a first imaging unit 21 and a second imaging unit 22, and the second imaging unit 22 is connected to the primary optical unit 1 through the first imaging unit 21. At least two of the primary optical unit 1, the first imaging unit 21, and the second imaging unit 22 can be integrated, especially when the three are integrated, the entire optical structure only has processing tolerances, but no assembly tolerances, which greatly improves the stability of optical performance; in addition, when the three are integrated, they can be integrally injection molded, and are almost all thin-walled parts, light in weight, and low in cost.

[0033] The contour line of the first imaging unit 21 in its collimating surface (plane A) is the first contour line. In this embodiment, plane A is the YZ plane. The first contour line includes at least one arc line. The first contour line has a focus F in the YZ plane. The first contour line includes at least one arc line protruding in a direction away from the focus. In this embodiment, the first contour line is an arc line protruding in a direction away from the focus. The first contour line is rotated around a horizontal axis passing through point F and extending along the Y-axis direction to form the first imaging unit 21. The focus F is the focus of the first imaging unit 21 in the YZ plane. The first imaging unit 21 is a convex surface protruding in a direction away from the focus. Since the first contour line is rotated around a horizontal axis passing through point F and extending along the Y-axis direction to form the first imaging unit 21, the section of the first imaging unit 21 in the XZ plane is a concentric arc with the focus F as the center. In other embodiments, the first contour line may include multiple arc lines protruding in a direction away from the focus, or arc lines protruding toward the focus.

[0034] The contour line of the second imaging unit 22 in its collimating surface (plane B) is the second contour line. In this embodiment, plane B is the XZ plane, and the second contour line includes a parabola or a quasi-parabola. The focus F' of the second imaging unit 22 in the XZ plane coincides with the focus F of the first imaging unit 21 in the YZ plane, forming the focus of the imaging component 2; the second contour line extends along the Y-axis direction to form the second imaging unit 22; the section line of the second imaging unit 22 in the XY plane is a straight line or a curve; the second imaging unit 22 can realize the reflection function by surface coating.

[0035] After passing through the primary optical unit 1 , the light emitted by the light source is redistributed, for example, distributed into regular light. After the redistribution, the light is refracted by the first imaging unit 21 , and then reflected by the second imaging unit 22 before being emitted.

[0036] The principle of light is: the light emitted from the focus F of the imaging component 2 is refracted by the first imaging unit 21 and collimated into parallel light in the YZ plane, and the light does not change its original propagation direction in the XZ plane; after passing through the first imaging unit 21 and then the second reflecting unit 22, the light is reflected in the XZ plane and emitted parallel to the optical axis, and the parallel light in the YZ plane is reflected and emitted without changing its propagation direction. Finally, the light emitted from the focus F is collimated into parallel light in both the XZ plane and the YZ plane, that is, the first imaging unit and the second imaging unit respectively realize the function of collimating the light emitted from the focus F in two mutually perpendicular planes.

[0037] Example 2

[0038] A vehicle lamp comprises the above optical structure. The vehicle lamp may further comprise a lamp housing, wherein the above optical structure is arranged in the lamp housing, and an LED light source is arranged in the lamp housing.

[0039] In summary, the primary optical unit 1 receives light from the light source and performs secondary distribution thereof; the light from the primary optical unit and passing through the focus F of the imaging component 2 passes through the first imaging unit 21 and the second imaging unit 22, and is collimated as parallel light and emitted in two perpendicular directions respectively; wherein the second imaging unit 22 can accurately image the light emitted at the focus F within the collimation plane.

[0040] The primary optical unit 1 , the first imaging unit 21 , and the second imaging unit 22 are at least arranged in pairs or the three are arranged in one piece, thereby eliminating the need for intermediate connecting parts, reducing assembly tolerances, and improving the stability of optical performance.

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

Claims

1. An optical structure, characterized in that: include, A primary optical unit (1), the primary optical unit (1) being used to receive light emitted by a light source and perform secondary distribution on the light; A first imaging unit (21), wherein the first imaging unit (21) has a refraction function; a second imaging unit (22), the second imaging unit (22) being used to receive the light refracted from the first imaging unit (21) and reflect the light, the focus of the second imaging unit (22) in plane B coincident with the focus of the first imaging unit (21) in plane A; Wherein, plane A and plane B are perpendicular to each other, plane A is the collimating plane of the first imaging unit (21), plane B is the collimating plane of the second imaging unit (22), and at least two of the first imaging unit (21), the second imaging unit (22) and the primary optical unit (1) are integrally formed.

2. The optical structure according to claim 1, characterized in that: The contour line of the first imaging unit (21) in plane A is a first contour line, the first contour line includes at least one arc line, and the first contour line has a focus F in plane A, that is, the focus of the first imaging unit (21) in plane A.

3. The optical structure according to claim 2, characterized in that: The first contour line is rotated around an axis passing through the focus and extending in a direction perpendicular to the plane B to form a first imaging unit (21).

4. The optical structure according to claim 1, characterized in that: The contour line of the second imaging unit (22) in plane B is a second contour line, and the second contour line includes a parabola.

5. The optical structure according to claim 4, characterized in that: A section line of the second imaging unit (22) in a plane perpendicular to plane A and perpendicular to plane B is a straight line or a curve.

6. The optical structure according to claim 4, characterized in that: The second contour line extends in a direction perpendicular to the plane B to form a second imaging unit (22).

7. A vehicle lamp, characterized in that: Comprising the optical structure as described in any one of claims 1-6.

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