Vehicle lamp and automobile including same

Abstract

To provide a lamp for a vehicle and an automobile including the same.SOLUTION: A lamp for a vehicle includes: a light source portion; a shield portion disposed on an output side of the light source portion and shielding a part of light irradiated from the light source portion to form a specific beam pattern; and a lens portion disposed on an output side of the shield portion, projecting the light irradiated from the light source portion, and including a plurality of lenses disposed to be spaced apart from each other in an optical axis direction. At least one of the plurality of lenses is disposed as a first lens, and on the first lens, a first face as any one of a face directing toward the light source portion and a face directing toward the direction opposite to the direction toward the light source portion, is formed into a concave shape, and a second face as the face in a direction opposite to the first face is formed into a convex shape.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle lamp and an automobile including the same, and more particularly to a vehicle lamp capable of realizing a clear image pattern and an automobile including the same. [Background technology]

[0002] Generally, guide lamps installed on vehicles include reverse guide lamps and turn signal guide lamps. Among these, reverse guide lamps are lit together with the reversing lights and project light onto the road surface on the sides and rear of the vehicle to inform surrounding vehicles and pedestrians of the intention to reverse and to inform other vehicles of the vehicle's direction of travel, thereby preventing accidents. Turn signal lamps are lamps that inform other vehicles of the vehicle's direction of travel when changing lanes or at intersections.

[0003] A vehicle guide lamp projects light onto a road surface adjacent to the vehicle to form a pattern image of a predetermined shape on the road surface. Conventionally, a multi-faceted reflector (hereinafter referred to as MFR) method has been applied to the guide lamp.

[0004] However, conventional MFR type guide lamps have had the problem of being difficult to realize accurate image patterns. Also, when using MFR type guide lamps, only simple image patterns can be realized, and when realizing multiple patterns, shielding between patterns is not possible, and as many light sources as there are patterns to be realized are required, which results in high costs and weight.

[0005] Therefore, there is a need for improved technology that can realize accurate image patterns and patterns of various shapes. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been developed to solve the above-mentioned problems, and aims to provide a vehicle lamp and a vehicle including the same that improve optical performance by minimizing aberrations and realizing an accurate pattern image. [Means for solving the problem]

[0007] In order to achieve the above object, a vehicle lamp according to the present invention includes a light source unit, a shield unit disposed on an emission side of the light source unit and configured to block a portion of light irradiated from the light source unit to form a predetermined beam pattern, and a lens unit disposed on the emission side of the shield unit and configured to project the light irradiated from the light source unit, the lens unit including a plurality of lenses spaced apart from each other in an optical axis direction, teeth at least Two First lens have The first lens has a first surface, which is one of a surface facing the light source unit and a surface facing in a direction opposite to the light source unit, formed in a concave shape, and a second surface, which is a surface opposite to the first surface, formed in a convex shape. The first lens has a center portion located in a central region of the first lens, and an edge portion located in an edge region of the first lens and disposed on a periphery of the center portion. have , the first surface of the edge portion In the cross section along the optical axis The absolute value of the radius of curvature of the first surface at the center In the cross section along the optical axis Less than the absolute value of the radius of curvature The absolute value of the radius of curvature of the first surface and the absolute value of the radius of curvature of the second surface are different from each other, the first lens is a convex meniscus lens, and no other lens is included between the shield portion and the adjacent first lens. .

[0008] The edge portion may be located within the effective diameter of the first lens.

[0011] the first surface of the edge portion In the cross section along the optical axis The absolute value of the radius of curvature of the second surface of the edge portion In the cross section along the optical axis It may be formed to be larger than the absolute value of the radius of curvature.

[0012] The lens unit may further include a second lens disposed to share the same optical axis as the first lens.

[0013] The light source unit may include a light source that irradiates light, and a light-collecting member that condenses the light irradiated from the light source and makes the light incident on the lens unit.

[0014] The light source unit may further include a housing having an internal space in which the light source unit, the shield unit, and the lens unit are sequentially accommodated.

[0015] The housing may include a light source mounting portion in which the light source unit is mounted, a shield mounting portion spaced apart from the light source mounting portion and in which the shield unit is mounted, and a lens mounting portion spaced apart from the shield mounting portion and in which at least one of the plurality of lenses is mounted.

[0016] The automobile according to the present invention is an automobile including a vehicle lamp, the vehicle lamp including a light source unit, a shield unit disposed on the light source unit's emission side and configured to block a portion of the light irradiated from the light source unit to form a predetermined beam pattern, and a lens unit disposed on the shield unit's emission side and configured to project the light irradiated from the light source unit, the lens unit including a plurality of lenses in an optical axis direction, the plurality of lenses teeth at least Two First lens have The first lens has a first surface, which is one of a surface facing the light source unit and a surface facing in a direction opposite to the light source unit, formed in a concave shape, and a second surface, which is a surface opposite to the first surface, formed in a convex shape. The first lens has a center portion located in a central region of the first lens, and an edge portion located in an edge region of the first lens and disposed on a periphery of the center portion. have , the first surface of the edge portion In the cross section along the optical axis The absolute value of the radius of curvature of the first surface at the center In the cross section along the optical axis Less than the absolute value of the radius of curvature The absolute value of the radius of curvature of the first surface and the absolute value of the radius of curvature of the second surface are different from each other, the first lens is a convex meniscus lens, and no other lens is included between the shield portion and the adjacent first lens. . [Effects of the Invention]

[0017] The vehicle lamp according to the present invention has a lens unit made up of a plurality of lenses, at least one of which is a meniscus lens, thereby improving the effect of improving aberration.

[0018] As a result, according to the present invention, the resolution can be increased, so that accurate image patterns can be realized, thereby improving optical performance.

[0019] Furthermore, according to the present invention, the shielding portion allows a single light source to realize multiple patterns. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a diagram illustrating an example in which a vehicle lamp according to an embodiment of the present invention is installed in a vehicle; [Figure 2] 1 is a perspective view schematically illustrating a configuration of a vehicle lamp according to an embodiment of the present invention; [Figure 3] 1 is a side view schematically illustrating the configuration of a vehicle lamp according to an embodiment of the present invention; [Figure 4] 1 is a cross-sectional view illustrating a configuration in which a vehicle lamp according to an embodiment of the present invention is mounted inside a housing; [Figure 5] 2 is a cross-sectional view illustrating a first lens according to an embodiment of the present invention. [Figure 6] 1 is a diagram for explaining the effect of reducing aberration according to an embodiment of the present invention, and is a diagram schematically illustrating a lens unit including a plurality of lenses. [Figure 7] FIG. 10 is a diagram illustrating a comparative example of the present invention, showing a lens portion composed of one lens. [Figure 8] 10A and 10B are diagrams for explaining the effect of correcting aberrations according to an embodiment of the present invention. [Figure 9] FIG. 1 is a diagram illustrating a comparative example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0022] First, the embodiments described below are suitable for understanding the technical features of the vehicle lamp and the automobile including the same of the present invention. However, the present invention is not limited to the embodiments described below, and the technical features of the present invention are not limited to the embodiments described below. Various modifications are possible within the technical scope of the present invention.

[0023] FIG. 1 is a diagram illustrating an example of a vehicle lamp according to an embodiment of the present invention installed in a vehicle, FIG. 2 is a perspective view schematically illustrating the configuration of a vehicle lamp according to an embodiment of the present invention, FIG. 3 is a side view schematically illustrating the configuration of a vehicle lamp according to an embodiment of the present invention, FIG. 4 is a cross-sectional view illustrating the configuration of a vehicle lamp according to an embodiment of the present invention mounted inside a housing, and FIG. 5 is a cross-sectional view illustrating a first lens according to an embodiment of the present invention.

[0024] FIG. 6 is a diagram for explaining the aberration reduction effect according to an embodiment of the present invention, and is a diagram illustrating a lens unit including multiple lenses. FIG. 7 is a diagram illustrating a comparative example of the present invention, and is a diagram illustrating a lens unit consisting of one lens. FIG. 8 is a diagram for explaining the aberration correction effect according to an embodiment of the present invention, and FIG. 9 is a diagram illustrating a comparative example of the present invention.

[0025] The vehicle lamp 10 according to the present invention may be, for example, a guide lamp that projects light onto a road surface 2 adjacent to the vehicle to realize a pattern image of a predetermined shape on the road surface 2. As an example, the vehicle lamp 10 according to the present invention may be a reverse guide lamp, a welcome guide lamp, or a turn signal guide lamp that is turned on together with a reversing light. Hereinafter, a case where the vehicle lamp 10 according to the present invention is a reverse guide lamp will be described as an example. However, the vehicle lamp 10 according to the present invention is not limited to a guide lamp, and may be various lamps provided in a vehicle. Furthermore, the guide lamp according to the present invention is not limited to a reverse guide lamp, and various lamps that irradiate a specific pattern onto the road surface 2 may be applied.

[0026] 1 to 6 and 8, a vehicle lamp 10 according to one embodiment of the present invention includes a light source unit 100, a shield unit 200, and a lens unit 300. The light source unit 100 includes a light source 100a, a shield unit 200b, and a lens unit 300c.

[0027] The light source unit 100 may be configured to emit light in a direction toward the road surface 2. The light source unit 100 may include a light source 110 and a light collecting member 130. For example, the light source 110 may be configured to emit light and may be, but is not limited to, a light emitting diode (LED). The light collecting member 130 may collect the light emitted from the light source 110 and make it incident on the shield unit 200 and the lens unit 300. The light collecting member 130 may be a collimator that converts the light emitted from the light source 110, such as an LED, into light parallel to an optical axis AX and makes it incident on the lens unit 300.

[0028] The shield unit 200 is disposed on the light output side of the light source unit 100 and can be provided to shield a portion of the light emitted from the light source unit 100 to form a predetermined beam pattern 11 .

[0029] Specifically, the shield unit 200 is disposed between the light source unit 100 and the lens unit 300, and can block a portion of the light emitted from the light source unit 100 to form a predetermined beam pattern 11. For example, the shield unit 200 can be formed in a planar shape perpendicular to the optical axis AX, and can realize a pre-designed light pattern by blocking a portion of the parallel incident light using the light collecting member 130. However, the shape of the shield unit 200 is not limited to the above.

[0030] More specifically, the shield unit 200 may include a shielding region 210 and a through-hole region 230. The shielding region 210 is a region that blocks light and transmits light from the through-hole region 230 to be emitted to the lens unit 300. The pattern image projected onto the road surface 2 of the shield unit 200 may vary depending on the shape of the through-hole region 230. Furthermore, unlike conventional vehicle lamps 10 that use a reflective surface, the embodiment of the present invention includes the shield unit 200 that includes the shielding region 210 and the through-hole region 230, thereby enabling various image patterns to be realized.

[0031] In addition, the shield part 200 may include a plurality of penetration areas, and the plurality of penetration areas may be formed in different shapes. As a result, the vehicle lamp 10 according to the present invention can realize a plurality of patterns with one light source 110 by using the shield part 200. In addition, according to the present invention, not only a simple rectangular beam pattern 11 but also complex patterns such as an arrow or a warning notice can be clearly realized.

[0032] In addition, the shield part 200 may be replaceable. For example, the shield part 200, which will be described later, may be separably assembled inside the housing 20, rather than being integrally fixed to the housing 20. As a result, two different road surface patterns may be realized using one light source module. As a result, the vehicle lamp 10 according to the present invention may be used in a variety of ways, such as as a turn signal, a welcome guide light, a warning symbol, or other forms of expression, in addition to a simple form for backup guidance.

[0033] The lens unit 300 is disposed on the emission side of the shield unit 200 and is configured to project light emitted from the light source unit 100, and may include a plurality of lenses disposed spaced apart from each other in the direction of the optical axis AX.

[0034] Specifically, the lens unit 300 may be disposed in a direction in which light incident from the light source unit 100 is emitted, and may be provided to project the light onto the road surface 2. The lens unit 300 may be configured with a plurality of lenses, and may include, for example, two lenses as in the illustrated embodiment, or may include three or more lenses.

[0035] Here, at least one of the plurality of lenses is provided as a first lens 310, and the first lens 310 has a first surface 310a, which is either a surface facing the light source unit 100 or a surface facing in the opposite direction to the light source unit 100, formed in a concave shape, and a second surface 310b, which is a surface facing in the opposite direction to the first surface 310a, formed in a convex shape. In other words, of both surfaces of the first lens 310, the concave surface can be the first surface, and the convex surface can be the second surface.

[0036] For example, the first lens 310 may be provided as a first lens 310 having a concave surface facing the light source unit 100 and a convex surface facing the opposite direction to the light source unit 100. However, the shape of the first lens 310 is not limited thereto, and the surface facing the light source unit 100 may be convex and the surface facing the opposite direction to the light source unit 100 may be concave.

[0037] Specifically, the first lens 310 may be a meniscus lens having a concave-convex shape in which a first surface 310a, which is an incident surface onto which light emitted from the light source unit 100 is incident, is formed concavely, and a second surface 310b, which is an exit surface, is formed convexly. In this specification, the lens consisting of a meniscus lens among the multiple lenses constituting the lens unit 300 is defined as the first lens 310.

[0038] In the vehicle lamp 10 according to the present invention, the lens unit 300 is made up of a plurality of lenses, at least one of which is a meniscus lens, thereby improving the effect of improving aberration. As a result, the present invention can increase the resolution, thereby realizing an accurate image pattern and thereby improving optical performance.

[0039] Here, aberration refers to a phenomenon in which, when multiple light rays emitted from a point object form an image through an imaging optical system, the light rays are not converged to a single point but some of them deviate (see FIG. 9). When aberration occurs in an optical system, a clear image or pattern cannot be obtained. Generally, aberration can occur in the optical system of a vehicle lamp 10 due to the shape characteristics of the lens or the color of light. In particular, in an embodiment of the present invention, when the shield part 200 is planar, off-axis optical aberration can occur, resulting in a very poor pattern integrity (see FIGS. 6 and 7).

[0040] Therefore, the present invention can correct spherical aberration and astigmatism by including the first lens 310, which is a meniscus lens, in the lens unit 300. Specifically, in order to reduce aberration occurring in a lens, methods include changing the lens material and the radius of curvature of the spherical surface, or using multiple lenses with different optical properties. The lens unit 300 according to the present invention can minimize aberration by using multiple lenses and including a meniscus lens with a convex shape on the output side.

[0041] Here, the first lens 310 may be provided in one or more pieces. Since at least one of the plurality of lenses in the lens unit 300 is provided as the first lens 310, the first lens 310 may be provided in one or more pieces. That is, the lens unit 300 includes one or more meniscus lenses. Also, the plurality of first lenses 310 may have different sizes. In the illustrated embodiment, the case where the first lens 310 is provided in two pieces is illustrated.

[0042] In the illustrated embodiment, when the lens unit 300 is configured with two lenses, if both lenses are meniscus lenses, the aberration correction effect can be superior to that of a single meniscus lens. However, meniscus lenses are not as easy to manufacture as general aspherical lenses, and there is a possibility that the cost will increase. Therefore, if a single meniscus lens can provide a sufficient aberration correction effect, the lens unit 300 can also include one meniscus lens.

[0043] Meanwhile, the first lens 310 according to the present invention can be divided into a center portion 311 and an edge portion 313. The center portion 311 is located in the central region of the first lens 310, and the edge portion 313 is located in the edge region of the first lens 310, disposed on the periphery of the center portion 311. In the cross-sectional view shown in FIG. 5, the center portion 311 may be region A, and the edge portion 313 may be region B.

[0044] Here, the edge portion 313 and the center portion 311 may be located within the clear aperture of the first lens 310. That is, the edge portion 313 and the center portion 311 are areas separated by the clear aperture of the first surface and the clear aperture of the second surface.

[0045] Here, the absolute value of the radius of curvature of the first surface 310 a of the edge portion 313 may be smaller than the absolute value of the radius of curvature of the first surface 310 a of the center portion 311 .

[0046] Specifically, the first lens 310 is provided as a meniscus lens having a convex shape in the light emission direction as a whole, and in this case, the first surface 310a of the first lens 310 may be formed so that the absolute values ​​of the curvature radii of the center portion 311 and the edge portion 313 are different.

[0047] In the region of the center portion 311, the first surface 310a has a shape that is nearly flat, and the second surface 310b has a convex shape, so that the shape of the center portion 311 may be similar to that of a plano-convex lens (PCX lens). However, for ease of manufacturing, the first surface 310a of the center portion 311 may be formed to have a predetermined radius of curvature rather than being a perfect plane during injection and molding of the lens.

[0048] Meanwhile, in order to correct aberration, the first surface 310a of the edge portion 313 may be formed to have a smaller absolute value of the radius of curvature than the first surface 310a of the center portion 311. As a result, the overall shape of the first lens 310 may be a meniscus lens shape.

[0049] Also, as in the illustrated embodiment, the first lens 310 may be formed such that the absolute value of the radius of curvature of the first surface 310a and the absolute value of the radius of curvature of the second surface 310b are different from each other.

[0050] In addition, the absolute value of the radius of curvature of the first surface 310a of the edge portion 313 may be greater than the absolute value of the radius of curvature of the second surface 310b of the edge portion 313. That is, the curve of the first surface 310a of the edge portion 313 may be gentler.

[0051] Specifically, the absolute value of the radius of curvature of the second surface 310b, which is the exit surface, may be smaller than the absolute value of the radius of curvature of the first surface 310a, which is the entrance surface. More specifically, the absolute value of the radius of curvature of the second surface 310b of the edge portion 313 may be smaller than the absolute value of the radius of curvature of the first surface 310a of the edge portion 313. In this case, the absolute values ​​of the radii of curvature of the first surface 310a and the second surface 310b may be determined to a degree that minimizes aberration, taking into consideration the design specifications of the vehicle lamp 10. However, the radii of curvature of the first surface 310a and the second surface 310b are not limited to those described above, and various shapes may be applied as long as they are meniscus lenses that are convex toward the exit side.

[0052] In this way, the present invention can correct aberrations more effectively by making the absolute values ​​of the radii of curvature of the first surface 310a and the second surface 310b of the first lens 310 different from each other, and by making the absolute values ​​of the radii of curvature of the center portion 311 and the edge portion 313 of the first surface 310a different from each other.

[0053] Meanwhile, as described above, the lens unit 300 according to an embodiment of the present invention may be configured with only a plurality of first lenses 310, which are meniscus lenses, or may include both meniscus lenses and lenses other than meniscus lenses. Specifically, the lens unit 300 may further include a second lens disposed to share the same optical axis AX as the first lens 310.

[0054] Here, the second lens may not be a meniscus lens. Although a more excellent aberration correction effect can be obtained when the second lens is composed of multiple meniscus lenses, if a sufficient aberration correction effect can be obtained with a single meniscus lens, only one of the multiple lenses may be a meniscus lens.

[0055] Hereinafter, the effect of the lens unit 300 consisting of a plurality of lenses will be described with reference to Figures 6 and 7. For convenience of explanation, the same reference numerals will be used in the embodiment of the present invention (Figure 6) and the comparative example (Figure 7).

[0056] 6 and 7 are diagrams illustrating imaging by the lens unit 300, which is an imaging optical system, where the shield unit 200 may serve as an object of the lens unit 300. The shield unit 200 is provided in a planar form perpendicular to the optical axis AX and may serve as a focal plane of the lens unit 300. OP may be the object plane when the lens unit 300 consists of a single lens. Here, the object is a target of image formation by the optical system, and may be a real object such as the shield unit 200, or a virtual image formed by a single lens such as OP. For reference, FOV stands for Field of View, and the size of the shield unit 200, which is the focal plane, may be determined in consideration of the FOV of the lens unit 300.

[0057] 7, since the shield unit 200 is formed in a planar shape, if the lens unit 300 is made of a single lens, aberration may occur with respect to the off-axis plane. As a result, the actual focal plane and the OP do not coincide with each other, and a phenomenon occurs in which some of the light rays passing through the lens unit 300 deviate from the shield unit 200, which is the actual focal plane. In this case, the pattern to be realized by the shield unit 200 becomes blurred, and the completeness of the pattern is reduced.

[0058] Meanwhile, as shown in Fig. 6, the lens unit 300 according to the embodiment of the present invention includes a plurality of lenses, and Fig. 6 shows an example including two lenses. In this case, one lens can be used to project the shape of the shield unit 200 onto an image surface (e.g., road surface 2), and the other lens can be used to reduce off-axis optical aberration of the shield unit 200 to realize a clear image.

[0059] 6, since the lens unit 300 includes two lenses, most of the light rays passing through the lens unit 300 can be converged on the shield unit 200, which is the focal plane, thereby minimizing aberration. This improves resolution and allows the shield unit 200 to clearly realize a desired pattern. In particular, even when multiple through regions 230 are formed in the shield unit 200 to realize multiple patterns, the multiple patterns can be accurately realized.

[0060] Meanwhile, the spherical aberration correction effect of a meniscus lens will be described below with reference to Figures 8 and 9. Figure 8 is a diagram illustrating a meniscus lens applied to the first lens 310 of the present invention, and Figure 9 is a diagram illustrating a plano-convex lens (PCX lens) 310' as a comparative example.

[0061] Referring to FIG. 9, plano-convex lens 310' refracts less light at second surface 310b' and more light at first surface 310a', resulting in an increase in spherical aberration overall. On the other hand, referring to FIG. 8, first lens 310, which is a meniscus lens, refracts more light at second surface 310b and less light at first surface 310a compared to plano-convex lens 310'. This results in first lens 310 refracting less light overall compared to plano-convex lens 310'. Therefore, using a meniscus lens can reduce spherical aberration and spot size.

[0062] Thus, according to the present invention, by including a meniscus lens in the lens unit 300, aberrations can be corrected without using multiple lenses, thereby realizing a compact optical system.

[0063] 4, the embodiment of the present invention may further include a housing 20. The housing 20 may have an internal space in which the light source unit 100, the shield unit 200, and the lens unit 300 are sequentially accommodated. That is, the housing 20 may serve as a body tube in which each component is mounted to maintain a constant distance between the light source unit 100, the shield unit 200, and the lens unit 300.

[0064] For example, the inner surface of the housing 20 may be formed in a stepped shape such that the inner diameter increases from the light source unit 100 toward the lens unit 300. However, the shape of the inner surface of the housing 20 is not limited to the above and may be modified in various ways depending on the size of each component accommodated in the internal space. For example, the inner diameter may be formed to decrease further from the light source unit 100 toward the lens unit 300. Hereinafter, a case where the inner diameter increases from the light source unit 100 toward the lens unit 300 will be described as an example.

[0065] More specifically, a light source mounting portion 21, a shield mounting portion 22, and a lens mounting portion 23 may be formed inside the housing 20.

[0066] The light source mounting part 21 may be provided to mount the light source unit 100. Specifically, the light condensing member 130 of the light source unit 100 may be mounted in the light source mounting part 21, and the inner diameter of the light source mounting part 21 may be formed to correspond to the outer diameter of the light condensing member 130.

[0067] In addition, the shield mounting part 22 may be formed to have a step with the light source mounting part 21 so as to have an inner diameter larger than that of the light source mounting part 21, and may be provided so that the shield part 200 is mounted thereon. The shield mounting part 22 may be formed to correspond to the shape of the edge of the shield part 200. However, without being limited thereto, the shield mounting part 22 may be formed in a shape that allows a part of the edge of the shield part 200 to be clamped and fixed in position.

[0068] The lens mounting part 23 may be formed to have a step with the shield mounting part 22 so as to have an inner diameter larger than that of the shield mounting part 22, and may be provided to mount at least one of the plurality of lenses. For example, as in the illustrated embodiment, when the lens unit 300 is made up of a plurality of lenses, the lens mounting part 23 may be formed in a position and shape that allows each of the plurality of lenses to be fixed. However, the step shape of the light source mounting part 21, the shield mounting part 22, and the lens mounting part 23 is not limited to the above.

[0069] Due to the shape of the housing 20, the present invention allows stable assembly while maintaining the distance between the light source unit 100, the shield unit 200, and the lens unit 300.

[0070] Meanwhile, a vehicle 1 according to an embodiment of the present invention includes a vehicle lamp 10. The vehicle lamp 10 includes a light source unit 100, a shield unit 200 disposed on the emission side of the light source unit 100 and configured to shield a portion of the light emitted from the light source unit 100 to form a predetermined beam pattern 11, and a lens unit 300 disposed on the emission side of the shield unit 200 and configured to project the light emitted from the light source unit 100, the lens unit 300 including a plurality of lenses in the direction of an optical axis AX.

[0071] In addition, at least one of the multiple lenses is provided as a first lens 310 in which a first surface 310a, which is the surface facing the light source unit 100, is formed concavely, and a second surface 310b, which is the surface opposite to the first surface 310a, is formed convexly.

[0072] Here, the first lens 310 includes a center portion 311 located in the central region of the first lens 310 and an edge portion 313 located in the edge region of the first lens 310 and arranged on the periphery of the center portion 311, and the absolute value of the radius of curvature of the first surface 310a of the edge portion 313 is formed to be smaller than the absolute value of the radius of curvature of the first surface 310a of the center portion 311.

[0073] The vehicle lamp according to the present invention has a lens unit that is made up of a plurality of lenses, at least one of which is a meniscus lens, thereby improving the effect of improving aberrations. As a result, the use of the present invention can increase resolution, thereby realizing accurate image patterns and improving optical performance.

[0074] Although specific embodiments of the present invention have been described in detail above, the spirit and scope of the present invention are not limited to such specific embodiments, and various modifications and variations can be made by those skilled in the art to which the present invention pertains without departing from the gist of the present invention as defined in the claims. [Explanation of symbols]

[0075] 1 vehicle 2 Road surface 10 Vehicle lamps 11 Beam Pattern 20. Housing 21 Light source attachment part 22 Shield attachment part 23 Lens attachment part 100 Light source section 110 Light source 130 Light collecting element 200 Shield part 210 Covered area 230 Penetration area 300 Lens section 310 First Lens 310a 1st page 310b 2nd side 311 Center 313 Edge AX optical axis

Claims

1. a light source unit; a shield portion disposed on an output side of the light source portion and configured to block a portion of the light emitted from the light source portion to form a predetermined beam pattern; a lens unit that is disposed on the light output side of the shield unit, is configured to project light emitted from the light source unit, and includes a plurality of lenses that are disposed to be spaced apart from each other in an optical axis direction; the plurality of lenses includes at least two first lenses; the first lens has a first surface, which is one of a surface facing the light source unit and a surface facing a direction opposite to the direction facing the light source unit, formed concavely, and a second surface, which is a surface opposite to the first surface, formed convexly, and has a center portion located in a central region and an edge portion located in an edge region and disposed on a periphery of the center portion, an absolute value of a radius of curvature of the edge portion in a cross section taken along the optical axis of the first surface is smaller than an absolute value of a radius of curvature of the center portion in a cross section taken along the optical axis of the first surface; the absolute value of the radius of curvature of the first surface and the absolute value of the radius of curvature of the second surface are different from each other, and the first lens is a convex meniscus lens; A vehicle lamp in which no other lens is included between the shield portion and the adjacent first lens.

2. The vehicle lamp according to claim 1 , wherein the edge portion is located within an effective diameter of the first lens.

3. 2. The vehicle lamp according to claim 1, wherein an absolute value of a radius of curvature of the first surface of the edge portion in a cross section taken along the optical axis is larger than an absolute value of a radius of curvature of the second surface of the edge portion in a cross section taken along the optical axis.

4. The lens portion is The vehicle lamp according to claim 1 , further comprising a second lens disposed to share the same optical axis as the first lens.

5. The light source unit is a light source that irradiates light; The vehicle lamp according to claim 1 , further comprising a light-collecting member that collects light emitted from the light source and makes the light incident on the lens portion.

6. The vehicle lamp according to claim 1 , further comprising a housing having an internal space in which the light source unit, the shield unit, and the lens unit are sequentially accommodated.

7. The housing has therein: a light source mounting portion configured to mount the light source unit; a shield mounting portion spaced apart from the light source mounting portion and configured to mount the shield; The vehicle lamp according to claim 6 , further comprising: a lens mounting portion spaced apart from the shield mounting portion, the lens mounting portion being provided to mount at least one of the plurality of lenses.

8. 1. A motor vehicle including a vehicle lamp, The vehicle lamp includes: a light source unit; a shield portion disposed on an output side of the light source portion and configured to block a portion of the light emitted from the light source portion to form a predetermined beam pattern; a lens unit that is disposed on the light output side of the shield unit and is configured to project the light emitted from the light source unit, and includes a plurality of lenses in an optical axis direction; the plurality of lenses includes at least two first lenses; the first lens has a first surface, which is one of a surface facing the light source unit and a surface facing a direction opposite to the direction facing the light source unit, formed concavely, and a second surface, which is a surface opposite to the first surface, formed convexly, and has a center portion located in a central region and an edge portion located in an edge region and disposed on a periphery of the center portion, an absolute value of a radius of curvature of the edge portion in a cross section taken along the optical axis of the first surface is smaller than an absolute value of a radius of curvature of the center portion in a cross section taken along the optical axis of the first surface; the absolute value of the radius of curvature of the first surface and the absolute value of the radius of curvature of the second surface are different from each other, and the first lens is a convex meniscus lens; The automobile, wherein no other lens is included between the shield portion and the adjacent first lens.

Images