Optical system suitable for angle fog lamp low beam broadening function and vehicle lamp

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an optical system suitable for a low beam broadening function of an angle fog lamp and a vehicle lamp, which comprises at least one light source, at least one imaging unit and a refraction unit which are sequentially arranged along the forward direction of emergent light; the light source is located at or near the focus of the imaging unit, the imaging unit is a lens or a reflector, and the refraction unit receives light rays from the imaging unit and realizes light ray angle diffusion. According to the optical system suitable for the lower beam broadening function of the angle fog lamp, light emitted by the light source is collected through the imaging unit, then the light angle is diffused through the refraction unit, the light is emitted out, the horizontal irradiation angle is increased, meanwhile, the lighting effect is high, and projection is uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car light, especially to an optical system suitable for cornering fog lamp low beam widening function and car light. BACKGROUND

[0002] The horizontal irradiation angle of the cornering fog lamp in the prior art is small, the light efficiency is low, and it is difficult to ensure uniform projection. INVENTION CONTENTS

[0003] The utility model solves the technical problems in the prior art, and provides an optical system suitable for cornering fog lamp low beam widening function and car light, which can realize a large horizontal irradiation angle and uniform projection.

[0004] The utility model adopts the technical scheme that an optical system suitable for cornering fog lamp low beam widening function comprises at least one light source, at least one imaging unit and a refractive unit, the light source, the imaging unit and the refractive unit are arranged in sequence along the light emission direction, the light source is located at or near the focal point of the imaging unit, the imaging unit is a lens or a reflector, the refractive unit receives light from the imaging unit and realizes the diffusion of light.

[0005] The optical system suitable for cornering fog lamp low beam widening function of the utility model collects light emitted by the light source through the imaging unit, then diffuses the light through the refractive unit and emits the light, improves the horizontal irradiation angle, and has high light efficiency and uniform projection.

[0006] Further, when the imaging unit is a lens, the light inlet part and / or the light outlet end of the lens have vertical stripes.

[0007] Further, each lens corresponds to one light source, or each lens corresponds to multiple single-core light sources or one multi-core light source.

[0008] Further, when the imaging unit is a reflector, the surface of the reflector is provided with vertical stripes.

[0009] Further, in the optical system, the focal point positions and focal lengths of different imaging units are the same.

[0010] Further, in the optical system, the focal point positions and focal lengths of different imaging units are different.

[0011] Further, the refractive unit has vertical stripes, which enlarge the projection angle of light from the imaging unit in the horizontal direction.

[0012] Along the light emission direction, the refractive unit has at least one, and the diffusion degrees of each refractive unit are the same.

[0013] Further, the diffusion degree of the plurality of refraction units arranged along the light emission direction is different.

[0014] Further, the optical unit with the bright-dark cutoff line shape is arranged between the light source and the imaging unit.

[0015] Further, a vehicle lamp comprises the optical system suitable for the corner fog lamp low beam widening function.

[0016] The utility model discloses beneficial effect is, through imaging unit gathers the light of light source emission, subsequently through refraction unit diffusion light angle and emit, promote horizontal irradiation angle, and light efficiency is high, and projection is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in combination with the drawings and examples.

[0018] Figure 1 It is the structure schematic diagram of the whole optical system suitable for the corner fog lamp low beam widening function in the utility model.

[0019] Figure 2 It is the schematic diagram of the utility model in reflecting that LED center deviates from the lens optical axis center.

[0020] Figure 3 It is the schematic diagram of the utility model in reflecting that the lens surface has curve type vertical stripe.

[0021] Figure 4 It is the schematic diagram of the utility model in reflecting that the lens surface has multiple fold line segment vertical stripe.

[0022] Figure 5 It is the schematic diagram of the structure of example 3 of the utility model.

[0023] Figure 6 It is the schematic diagram of the structure of example 5 of the utility model.

[0024] Figure 7 It is the schematic diagram of the utility model in reflecting that the imaging unit is reflector, and single reflector is formed by the splicing of multiple reflection units.

[0025] Figure 8 It is the schematic diagram of the structure of the utility model in reflecting that reflector and refraction unit are in vertical plane.

[0026] Figure 9 It is the schematic diagram of the utility model in reflecting that the light emitting center of light source deviates from the focal point of reflector.

[0027] In the drawing: 1, light source, 2, imaging unit, 3, refraction unit, 4, optical unit with bright-dark cutoff line shape. DETAILED DESCRIPTION

[0028] The utility model will be described further in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0029] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] The utility model discloses an optical system suitable for corner fog lamp low beam widening function and car lamp.

[0031] Referring to Figure 1 An optical system suitable for corner fog lamp low beam widening function, the optical system is composed of at least one light source 1, at least one imaging unit 2 and refractive unit 3, and the imaging unit 2 can be a lens or a mirror; the light source 1, the imaging unit 2 and the refractive unit 3 are sequentially arranged along the light-emitting positive direction.

[0032] In the following embodiment, the imaging unit 2 is a lens:

[0033] Embodiment 1:

[0034] Referring to Figure 2, the light source 1 is located at the focal point of the lens, and the light emitting center of the light source 1 deviates from the optical axis of the lens in the vertical direction by a certain distance. In the vertical plane, the lens receives light from the light source 1; in the horizontal plane, the light emitted by the light source 1 is collimated into approximately parallel light after passing through the lens; the light passing through the lens is refracted by the refractive unit 3 and exits.

[0035] The light entrance and / or light exit of the refractive unit 3 has vertical stripes, which are used to increase the angle of light projection in the horizontal direction and improve the uniformity of light distribution in the horizontal direction.

[0036] Since the light emitting center of the light source 1 deviates from the optical axis of the lens in the vertical direction, and preferably upward, most of the final light pattern can irradiate to the ground, i.e. below the horizontal line, and can form a horizontal bright-dark cutoff line, which is mainly caused by the light emitting boundary of the light source 1.

[0037] It should be noted that in the optical system, the lens corresponds to the light source 1 one by one, or multiple single-core light sources 1 correspond to a single lens, or a single multi-core light source 1 corresponds to a single lens.

[0038] The refractive unit 3 is an optical unit with vertical stripes on the light entrance and / or light exit, and the refractive unit 3 has the function of expanding the horizontal projection angle of light from the imaging unit 2. Along the light emitting direction of the light source 1, at least one refractive unit 3 can be placed. When multiple refractive units 3 are placed, the vertical stripes on the surface of each refractive unit 3 can be consistent or inconsistent in the degree of diffusion in the horizontal direction.

[0039] In addition, the refractive unit 3 can be an optical unit with a certain thickness, or it can be a film with the functions of the above-mentioned refractive unit 3, but it is very thin, and the commonly used specifications can be 0.25, 0.5, 0.75 mm, and the vertical stripes can not be clearly visible to the naked eye.

[0040] Embodiment 2:

[0041] The difference from embodiment 1 is that the light entrance and / or light exit of the lens has vertical stripes, which are used to increase the angle of light passing through the lens in the horizontal direction, and to improve the uniformity of light projection in the horizontal direction.

[0042] Referring to Figure 3 and Figure 4 It should be noted that the shape of the vertical stripes can be concave-convex, all convex or all concave (curved vertical stripes); another shape of the vertical stripes can be formed by the intersection of two lines, which are vertical planes spaced a certain distance apart and the light entrance and / or light exit of the lens (multi-segment vertical stripes).

[0043] Example 3:

[0044] Referring to Figure 5 On the basis of Example 1, an optical unit 4 with a cut-off line shape is placed near the light source 1 to make the final projection light pattern have a cut-off line shape, which is particularly needed for the high beam widening function.

[0045] Example 4:

[0046] The difference from Example 3 is that the light source 1 is offset from the lens focal point by a certain distance in the vertical plane, and the optical unit 4 with a cut-off line shape is placed at the focal point of the lens.

[0047] Example 5:

[0048] Referring to Figure 6 The optical system can be composed of at least one group of this structure, with the light source 1 and the corresponding lens as a group; the focal point positions and focal lengths of the lenses in each group can be the same or different.

[0049] Example 6:

[0050] The difference from Example 1 is that the lens unit itself has the function of diffusing the refractive angle of light (this function does not need to be achieved by attaching vertical stripes to the entrance and exit light surfaces), which can be achieved by setting the diffusion angle of the lens in the optical design software to change the lens surface shape.

[0051] In the following examples, the imaging unit 2 is a mirror, which can be equivalent to the lens in the above examples, i.e., the above examples also apply to mirrors:

[0052] Example 7:

[0053] Referring to Figure 7 and Figure 8 The surface of a single mirror can be a complete surface or have vertical patterns; the patterns can be arc-shaped patterns, with consistent or inconsistent diffusion degrees for each arc-shaped pattern; each mirror can also be formed by splicing multiple reflective surfaces.

[0054] Example 8:

[0055] Referring to Figure 9 The light-emitting center of the light source 1 can be located at the focal point of the mirror or offset from the focal point of the mirror and placed in the negative direction of the mirror light exit.

[0056] Example 9: The focal lengths of each mirror are the same or different; each mirror can correspond to a single-core light source 1 or a multi-core light source 1.

[0057] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An optical system suitable for use in a corner fog lamp with a low beam widening function, characterized in that, The optical system comprises at least one light source (1), at least one imaging unit (2) and at least one refractive unit (3), which are arranged in sequence along the light emitting direction; The light source (1) is located at or near the focal point of the imaging unit (2), the imaging unit (2) is a lens or a mirror, and the refractive unit (3) receives light from the imaging unit (2) and realizes the diffusion of light rays.

2. The optical system suitable for the function of the low beam widening of the cornering fog lamp according to claim 1, characterized in that, When the imaging unit (2) is a lens, the light entrance part and / or the light exit end of the lens has vertical stripes.

3. The optical system suitable for the function of the low beam widening of the cornering fog lamp according to claim 2, characterized in that, Each lens corresponds to one light source (1), or each lens corresponds to multiple single-core light sources (1) or one multi-core light source (1).

4. The optical system suitable for the function of the low beam widening of the cornering fog lamp according to claim 1, characterized in that, When the imaging unit (2) is a mirror, the surface of the mirror is provided with vertical stripes.

5. The optical system for the cornering fog lamp low beam widening function according to claim 1, wherein In the optical system, the focal point positions and focal lengths of different imaging units (2) are the same.

6. The optical system for use in the cornering fog lamp low beam widening function according to claim 1, characterized in that, In the optical system, the focal point positions and focal lengths of different imaging units (2) are different.

7. The optical system for use in the cornering fog lamp low beam widening function according to claim 6, characterized in that, The refractive unit (3) has vertical stripes, which enlarges the projection angle of light rays from the imaging unit (2) in the horizontal direction; Along the light emitting direction, the refractive unit (3) has at least one, and the diffusion degree of each refractive unit (3) is the same.

8. The optical system suitable for the function of the low beam widening of the corner fog lamp according to claim 7, wherein, The diffusion degrees of multiple refractive units (3) arranged along the light emitting direction are different.

9. The optical system for use in the cornering fog lamp low beam widening function according to claim 1, wherein An optical unit (4) with light-dark cutoff line shape is arranged between the light source (1) and the imaging unit (2).

10. A vehicle lamp characterized by The optical system is suitable for the low beam widening function of the corner fog lamp, and comprises any one of the optical systems in claims 1-9.

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