Vehicle lamp

Abstract

The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp capable of forming an optimal light beam pattern. A vehicle lamp according to an embodiment of the present invention is a vehicle lamp in which a predetermined light beam pattern is formed by at least one lamp module, in which the at least one lamp module may include: a light source unit including at least one light source; an optical path conversion unit that converts the path of the light emitted from the light source unit; and an optical section that transmits at least a portion of the light emitted from the light path conversion section to form the light beam pattern, in which the optical section may include a plurality of incident lenses and a plurality of emitting lenses corresponding to the plurality of incident lenses, respectively, among the plurality of incident lenses and the plurality of emitting lenses, the plurality of incident lenses and the plurality of emitting lenses each include a plurality of incident lenses and a plurality of emitting lenses corresponding to the plurality of emitting lenses. The ratios of the lens characteristics of the emission lenses corresponding to each other with respect to the lens characteristics of the incidence lenses may have a plurality of ratios different from each other.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp capable of forming an optimal light beam pattern. Background Art

[0002] Generally, a vehicle has various lamps for the purpose of an illumination function for easily recognizing objects around the vehicle during night driving and a signal function for informing surrounding vehicles or pedestrians of the driving state of the vehicle.

[0003] For example, headlamps and fog lamps are mainly intended to perform an illumination function, and turn signal lamps, tail lamps, and brake lamps are mainly intended to perform a signal function. The installation standards and specifications of each lamp have been regulated by regulations so as to fully exert their respective functions.

[0004] Among them, the headlamp irradiates light in the driving direction of the vehicle to ensure the forward view of the driver, and thus plays a very important role in ensuring safe driving.

[0005] The headlamp can form a low beam light beam pattern that irradiates light downward with a cut-off line as a reference or a high beam light beam pattern that irradiates light at least partially upward of the cut-off line. And when irradiating light upward of the cut-off line when forming the low beam light beam pattern, it may cause glare to the driver of the vehicle ahead. Therefore, a solution that can prevent light from irradiating upward of the cut-off line when forming the low beam light beam pattern is required.

[0006] [Prior Art Documents] [Patent Documents] Published Patent Gazette No. 10-2012-0056465 (published on Apr. 27, 2023) Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a vehicle lamp capable of forming an optimal light beam pattern by preventing light from being emitted in an unnecessary direction.

[0008] The technical problems of the present invention are not limited to the above-mentioned technical problems, and those skilled in the art can clearly understand other technical problems not mentioned from the following description.

[0009] In order to solve the above technical problems, a vehicle lamp according to an embodiment of the present invention is a vehicle lamp that forms a predetermined light beam pattern by means of at least one lamp module. Among them, the at least one lamp module may include: a light source unit including at least one light source; an optical path conversion unit that converts the path of light emitted from the light source unit; and an optical unit that transmits at least a part of the light emitted from the optical path conversion unit to form the light beam pattern. Among them, the optical unit includes a plurality of incident lenses and a plurality of outgoing lenses respectively corresponding to the plurality of incident lenses. Among the plurality of incident lenses and the plurality of outgoing lenses, the ratio of the lens characteristics of the corresponding outgoing lens to the lens characteristics of the incident lens may have a plurality of different ratios for each other.

[0010] The lens characteristics may include at least one of curvature and diameter.

[0011] Among the plurality of incident lenses and the plurality of outgoing lenses, the focal length of the corresponding incident lens may be longer than the focal length of the outgoing lens.

[0012] The plurality of incident lenses may include a first incident lens and a second incident lens, and the plurality of outgoing lenses may include a first outgoing lens and a second outgoing lens respectively corresponding to the first incident lens and the second incident lens. The ratio of the focal length of the first outgoing lens to the focal length of the first incident lens and the ratio of the focal length of the second outgoing lens to the focal length of the second incident lens may be different from each other.

[0013] Among the plurality of incident lenses and the plurality of outgoing lenses, the ratio of the focal length of the corresponding outgoing lens to the focal length of the incident lens may gradually increase or decrease in at least one direction from one side to the other side.

[0014] One of the plurality of incident lenses and the plurality of outgoing lenses may have the same focal length.

[0015] The first incident lens and the first outgoing lens may form a focal point at the same position, and the second incident lens and the second outgoing lens may form focal points at different positions from each other.

[0016] Among the plurality of incident lenses and the plurality of outgoing lenses, the ratio of the focal length of the corresponding outgoing lens to the focal length of the incident lens may be less than or equal to the ratio of the focal length of the first incident lens to the focal length of the first outgoing lens.

[0017] The first incident lens and the second incident lens may have different curvatures to have different focal lengths.

[0018] The first emission lens and the second emission lens may have different curvatures from each other to have different focal lengths from each other.

[0019] The plurality of incident lenses may include a first incident lens and a second incident lens, and the plurality of emission lenses may include a first emission lens and a second emission lens corresponding to the first incident lens and the second incident lens respectively, and the ratio of the diameter of the first emission lens to the diameter of the first incident lens and the ratio of the diameter of the second emission lens to the diameter of the second incident lens may be different from each other.

[0020] Among the plurality of incident lenses and the plurality of emission lenses, the ratio of the diameter of the corresponding emission lens to the diameter of the incident lens may gradually increase or decrease in at least one direction from one side to the other side.

[0021] One of the plurality of incident lenses and the plurality of emission lenses may have the same diameter.

[0022] The first incident lens and the first emission lens may have the same diameter, and the second incident lens and the second emission lens may have different diameters from each other.

[0023] Among the plurality of incident lenses and the plurality of emission lenses, the ratio of the diameter of the corresponding emission lens to the diameter of the incident lens may be greater than or equal to the ratio of the diameter of the first emission lens to the diameter of the first incident lens.

[0024] The first incident lens and the second incident lens may have different diameters from each other.

[0025] The first emission lens and the second emission lens may have different diameters from each other.

[0026] Each of the plurality of emission lenses may be formed such that the length in the vertical direction is greater than the length in the horizontal direction.

[0027] The optical unit may further include: a plurality of shields that shield a part of the light traveling toward each of the plurality of emission lenses.

[0028] The optical unit may be inclined to be formed such that it is located more forward on one side than on the other side in at least one direction.

[0029] Other specific matters of the present invention are included in the detailed description and the drawings.

[0030] According to the vehicle lamp of the present invention as described above, it has one or more of the following effects.

[0031] By making the ratios of the lens characteristics of the corresponding outgoing lenses to the lens characteristics of the incoming lenses among a plurality of incoming lenses and a plurality of outgoing lenses have a plurality of different ratios from each other, it is possible to reduce the light irradiated in unnecessary directions while satisfying the light distribution characteristics of the light beam pattern, so as to have the effect of improving glare.

[0032] The effects of the present invention are not limited to the effects mentioned above, and those skilled in the art can clearly understand other technical effects not mentioned through the description of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a perspective view showing a vehicle lamp according to an embodiment of the present invention.

[0034] Figure 2 is a side view showing a vehicle lamp according to an embodiment of the present invention.

[0035] Figure 3 is a plan view showing a vehicle lamp according to an embodiment of the present invention.

[0036] Figure 4 is a schematic diagram showing a light beam pattern formed by a vehicle lamp according to an embodiment of the present invention.

[0037] Figure 5 and Figure 6 is a perspective view showing a lamp module according to an embodiment of the present invention.

[0038] Figure 7 is a side view showing a lamp module according to an embodiment of the present invention.

[0039] Figure 8 is a plan view showing a lamp module according to an embodiment of the present invention.

[0040] Figure 9 and Figure 10 is an exploded perspective view showing an optical unit according to an embodiment of the present invention.

[0041] Figure 11 is a side view showing a part of an optical unit according to an embodiment of the present invention.

[0042] Figure 12 is a schematic diagram showing the shapes of a plurality of outgoing lenses according to an embodiment of the present invention.

[0043] Figure 13 is a schematic diagram showing the light path of an optical unit according to an embodiment of the present invention.

[0044] Figure 14 is a schematic diagram showing the light path corresponding to the focal length of an outgoing lens according to an embodiment of the present invention.

[0045] Figure 15 It is a schematic diagram showing an optical path corresponding to the diameter of an emission lens according to an embodiment of the present invention.

[0046] Description of reference numerals 10: Lighting fixture module 1000: Light source unit 2000: Optical path conversion unit 3000: Optical unit 3100: Incident unit 3110, 3111, 3112: Incident lenses 3120: First light transmission unit 3200: Emission unit 3210, 3211, 3212: Emission lenses 3220: Second light transmission unit 3300, 3310, 3320: Shielding members 3400: Additional shielding member Detailed description of the embodiments

[0047] Referring to the embodiments described in detail below in conjunction with the drawings, the advantages and features of the present invention and the methods for achieving them can be clarified. However, the present invention can be implemented in various different forms and is not limited to the embodiments disclosed below. Providing these embodiments only makes the disclosure of the present invention complete and is used to fully inform those with ordinary knowledge in the technical field to which the present invention pertains of the scope of the present invention. The present invention is only defined by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0048] Therefore, in some embodiments, in order to avoid the present invention being ambiguously interpreted, well-known process steps, well-known structures, and well-known technologies are not specifically described.

[0049] The terms used in this specification are for describing the embodiments and are not intended to limit the present invention. In this specification, unless otherwise specified, the singular form also includes the plural form in the sentence. The terms "comprises" and / or "comprising" used in the specification mean that the presence or addition of one or more other components, steps, operations, and / or elements other than the mentioned components, steps, operations, and / or elements is not excluded. In addition, "and / or" includes each and all combinations of the mentioned items.

[0050] In addition, the embodiments described in this specification will be described with reference to sectional views and / or schematic diagrams that are idealized example diagrams of the present invention. Therefore, the shape of the example diagrams may be deformed according to manufacturing techniques and / or tolerances, etc. Therefore, the embodiments of the present invention are not limited to the specific shapes shown in the diagrams, and changes in the shapes generated according to the manufacturing process are also included. Moreover, in each of the drawings illustrated in the present invention, each component may be illustrated with some magnification or reduction for convenience of explanation. Throughout the specification, the same reference numerals refer to the same components.

[0051] Hereinafter, based on the embodiments of the present invention, the present invention will be described by referring to the drawings for describing a vehicle lamp.

[0052] Figure 1 is a perspective view showing a vehicle lamp according to an embodiment of the present invention, Figure 2 is a side view showing a vehicle lamp according to an embodiment of the present invention, Figure 3 is a plan view showing a vehicle lamp according to an embodiment of the present invention.

[0053] Referring to Figures 1 to 3 , the vehicle lamp 1 according to an embodiment of the present invention may include a plurality of lamp modules 10 arranged in at least one direction. Hereinafter, in the embodiments of the present invention, an example will be described in which the X-axis represents the vehicle width direction as the left-right direction, the Y-axis represents the traveling direction as the front-rear direction, and the Z-axis represents the vehicle height direction as the up-down direction, but it is not limited thereto. The actual directions represented by the X-axis, Y-axis, and Z-axis may be different according to the direction or position where the vehicle lamp 1 of the present invention is installed.

[0054] In the embodiments of the present invention, an example will be described in which the vehicle lamp 1 is used as a headlamp that irradiates light in the traveling direction of the vehicle to ensure the field of view in front of the vehicle when the vehicle is traveling at night or in a dark place such as a tunnel, but it is not limited thereto. The vehicle lamp 1 of the present invention can be used not only as a headlamp, but also as various lamps such as fog lamps, daytime running lamps, turn signals, tail lamps, reverse lamps, and brake lamps provided in the vehicle. Moreover, the vehicle lamp 1 of the present invention can be used as one of the above various lamps, or can be used as two or more at the same time.

[0055] When the vehicle lamp 1 of the present invention is used as a headlamp, at least one of a low beam pattern and a high beam pattern can be formed. The low beam pattern irradiates light downward based on a cut-off line of a predetermined shape, thereby preventing glare to the driver of a preceding vehicle or an oncoming vehicle and ensuring a wide field of view at a short distance in front of the vehicle. The high beam pattern irradiates at least a part of the light upward based on the cut-off line, thereby ensuring a long field of view at a long distance in front of the vehicle. Hereinafter, in an embodiment of the present invention, as Figure 4 shown, the case where a low beam pattern P having a predetermined cut-off line CL is formed by the vehicle lamp 1 will be described as an example.

[0056] In addition, in an embodiment of the present invention, the case where the vehicle lamp 1 includes a plurality of lamp modules 10 arranged in the vertical direction is described as an example, but this is only an example for helping to understand the present invention and is not limited thereto. According to the light distribution characteristics of the beam pattern formed by the vehicle lamp 1 of the present invention (i.e., the position, size, shape, brightness, etc. of the light irradiation area), various changes can be made to the number and arrangement direction of the lamp modules included in the vehicle lamp 1 according to the present invention.

[0057] At this time, the case where a plurality of lamp modules 10 are arranged in the vertical direction, and the lamp modules are gradually located in front and on the right side while moving from the upper side to the lower side is described as an example, but this is only for arranging the plurality of lamp modules 10 along the body line of the vehicle.

[0058] In other words, the vehicle lamp 1 of the present invention can be housed in an internal space formed by a lamp housing (not shown) and a cover lens (not shown) coupled to the lamp housing, and is used to arrange the plurality of lamp modules 10 according to the shape of the cover lens that forms a part of the main body line of the vehicle.

[0059] For example, when the cover lens has a planar shape facing forward, the plurality of lamp modules 10 are arranged in the vertical direction and have the same position in the front-rear direction and the left-right direction. However, when the cover lens has a planar or curved shape inclined at a predetermined angle with respect to the front, the plurality of lamp modules 10 can be arranged in the vertical direction, and the adjacent lamp modules can be arranged so as to be offset from each other in the front-rear direction or the left-right direction.

[0060] The beam pattern formed by the vehicle lamp 1 of the present invention can be formed by overlapping or synthesizing the beam patterns formed by each of the plurality of lamp modules 10.

[0061] For example, the light beam pattern formed by the vehicle lamp 1 according to the present invention can be formed by overlapping the light beam patterns with the same light distribution characteristics formed by a plurality of lamp modules 10, or can be formed by synthesizing the light beam patterns with different light distribution characteristics formed by each of the plurality of lamp modules 10.

[0062] Figure 5 And Figure 6 is a perspective view showing a lamp module according to an embodiment of the present invention, Figure 7 is a side view showing a lamp module according to an embodiment of the present invention, Figure 8 is a plan view showing a lamp module according to an embodiment of the present invention, Figures 5 to 8 is an example showing the case of one of the plurality of lamp modules 10, and the other lamp modules can also be applied similarly.

[0063] Referring to Figures 5 to 8 , the lamp module 10 according to an embodiment of the present invention may include a light source unit 1000, an optical path conversion unit 2000, and an optical unit 3000.

[0064] The light source unit 1000 may include at least one light source that emits light having a light quantity or color suitable for the use of the lamp module 10 according to the present invention, and at least one of the brightness and color of the light emitted from the light source unit 1000 may be different according to the use of the vehicle lamp 1 according to the present invention.

[0065] In an embodiment of the present invention, the case of using a semiconductor light emitting element such as a light emitting diode (LED: Light Emitting Diode) as at least one light source is taken as an example for description, but it is not limited thereto. The at least one light source may use various types of light sources such as a laser diode (LD: Laser Diode) or a bulb (Bulb) in addition to the LED, and components such as reflectors, mirrors, prisms, phosphors, etc. for controlling the brightness, path, color, etc. of light may be additionally used according to the type of the light source.

[0066] The optical path conversion unit 2000 is located in front of the light source unit 1000 and may function to convert the light emitted from the light source unit 1000 toward a predetermined light irradiation range into approximately parallel light and emit it. Thus, the light emitted from the light source unit 1000 is uniformly incident on the optical unit 3000 located in front of the optical path conversion unit 2000, so that the light beam pattern formed by the vehicle lamp 1 according to the present invention can have a uniformly bright overall brightness.

[0067] That is, the light source unit 1000 can emit light within a predetermined angular range with respect to the optical axis Ax, which is the axis passing through the center of the light-emitting region, and the optical path conversion unit 2000 can convert the optical path so that the light emitted from the light source unit 1000 is emitted substantially parallel to the optical axis Ax.

[0068] In an embodiment of the present invention, the case where an aspherical lens is used as the optical path conversion unit 2000 is taken as an example for illustration, but it is not limited thereto. The optical path conversion unit 2000 can use not only an aspherical lens but also various types of lenses such as a Fresnel lens or a total internal reflection (TIR) lens that convert the light incident from the light source unit 1000 into parallel light.

[0069] The case where the optical path conversion unit 2000 is located in front of the light source unit 1000 and the optical unit 3000 is located in front of the optical path conversion unit 2000 is an example when the direction of irradiating light from the vehicle lamp 1 of the present invention is assumed to be the front. Depending on the position or direction of the vehicle lamp 1 of the present invention, the actual direction represented by the front can be different.

[0070] The optical unit 3000 can transmit at least a part of the light emitted from the optical path conversion unit 2000, thereby serving to form a light beam pattern suitable for the vehicle lamp 1 according to the present invention.

[0071] Figure 9 and Figure 10 is an exploded perspective view showing an optical unit according to an embodiment of the present invention.

[0072] Referring to Figure 9 and Figure 10 According to an embodiment of the present invention, the optical unit 3000 may include an incident part 3100 and an emission part 3200.

[0073] The incident part 3100 may include a plurality of incident lenses 3110 and a first light transmission part 3120, and the emission part 3200 may include a plurality of emission lenses 3210 and a second light transmission part 3220.

[0074] A plurality of incident lenses 3110 may be arranged on the incident surface 3121 of the first light transmission part 3120, a plurality of emission lenses 3210 may be arranged on the emission surface 3222 of the second light transmission part 3220, and the emission surface 3122 of the first light transmission part 3120 and the incident surface 3221 of the second light transmission part 3220 may be arranged to be in contact with or adjacent to each other in a facing manner, so that the light incident on the plurality of incident lenses 3110 can be transmitted to the plurality of emission lenses 3210 through the first light transmission part 3120 and the second light transmission part 3220.

[0075] At this time, for miniaturization of the vehicle lamp 1 of the present invention, a case where microlenses with relatively short focal lengths are used as the plurality of incident lenses 3110 and the plurality of emission lenses 3210 will be described as an example.

[0076] In an embodiment of the present invention, each of the plurality of incident lenses 3110 is formed in a semi-cylindrical shape that extends relatively long in the left-right direction, and light incident on each of the plurality of incident lenses 3110 is emitted through two or more adjacent emission lenses in the left-right direction among the plurality of emission lenses 3210. This is described as an example for improving the diffusion characteristics of the sub-beam pattern formed by the vehicle lamp 1 of the present invention, but is not limited thereto. According to the light distribution characteristics of the beam pattern, the plurality of incident lenses 3110 and the plurality of emission lenses 3210 can correspond not only in a one-to-many manner, but also in a one-to-one, many-to-one, many-to-many, etc. manner.

[0077] The first light transmission part 3120 can be formed to have a thickness corresponding to the focal length of the plurality of incident lenses 3110, the second light transmission part 3220 can be formed to have a thickness corresponding to the focal length of the plurality of emission lenses 3210, and when the first light transmission part 3120 and the second light transmission part 3220 are arranged in contact with each other, a focal point formed between the incident lens and the emission lens corresponding to each other among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 can be formed at the interface between the first light transmission part 3120 and the second light transmission part 3220.

[0078] At this time, the focal point can have a shape of a point, a line, a surface, a space, or a combination thereof according to the shape of the region where light is substantially concentrated.

[0079] The above-described plurality of incident lenses 3110 and plurality of emission lenses 3210 can be defined by at least one lens characteristic, and in an embodiment of the present invention, a case where the lens characteristic includes physical characteristics such as diameter, focal length, thickness, curvature, etc. and optical characteristics such as brightness, clarity, color sense, etc. is described as an example.

[0080] Figure 11 It is a side view showing a part of the optical unit according to an embodiment of the present invention.

[0081] Refer to Figure 11 , according to an embodiment of the present invention, the optical unit 3000 can form the focal point F between the incident lens and the emission lens corresponding to each other among the plurality of incident lenses 3110 and the plurality of emission lenses 3210. The focal point F can be a front-side focal point based on the incident lens 3110 and a rear-side focal point based on the emission lens 3210.

[0082] At this time, the focal length f1 between the focal point F and the corresponding incident lens can be formed to be longer than the focal length f2 between the focal point F and the corresponding exit lens, in order to prevent a situation where, when the light incident on each of the plurality of incident lenses 3110 converges at the corresponding focal point and is incident on the corresponding exit lens among the plurality of exit lenses 3210, it will not only be incident on the corresponding exit lens but also on an adjacent other exit lens.

[0083] In other words, as the focal length f2 between the focal point F and the corresponding exit lens becomes longer, in order to make the light incident on each of the plurality of incident lenses 3110 be incident on the corresponding exit lens among the plurality of exit lenses 3210 with as little loss as possible, it is necessary to increase the size of the corresponding exit lens. Therefore, the focal length f2 between the focal point F and the corresponding exit lens is made smaller than the focal length f1 between the focal point F and the corresponding incident lens, in order to prevent the size of the corresponding exit lens from increasing.

[0084] A plurality of shielding members 3300 can be provided between the corresponding incident lens and the exit lens among the plurality of incident lenses 3110 and the plurality of exit lenses 3210, and the upper end of each of the plurality of shielding members 3300 can be located at or near the rear focal point of each of the plurality of exit lenses 3210. Thus, the vehicle headlamp 1 of the present invention can form a Figure 4 low beam pattern P having a cut-off line CL with a predetermined shape as shown.

[0085] That is, based on the rear focal point F of each of the plurality of exit lenses 3210, the light traveling through the lower space and emitted is emitted in a manner of being refracted relatively upward. Thus, the light irradiates the upper side of the cut-off line CL and may cause glare to the driver of the vehicle ahead. Therefore, by means of the plurality of shielding members 3300, the light traveling through the lower space is blocked based on the rear focal point F of each of the plurality of exit lenses 3210.

[0086] As Figure 12 shown, the plurality of exit lenses 3210 can be formed such that the length c2 in the vertical direction is greater than the length c1 in the horizontal direction, in order to prevent the light incident on each of the plurality of incident lenses 3110 from not only being incident on the corresponding exit lens among the plurality of exit lenses 3210 but also on an adjacent other lens and thus being emitted in an unnecessary direction.

[0087] That is, in order to shorten the focal length f2 between the focal point F and the corresponding projection lens, it is necessary to increase the curvature of the plurality of projection lenses 3210, so the size increases in the front-rear direction. As the focal length f2 between the focal point F and the corresponding projection lens becomes shorter, the area from which light is substantially emitted from each of the plurality of projection lenses 3210 gradually decreases. The image formed by the light emitted from the vehicle lamp 1 of the present invention may have uneven overall brightness. Therefore, there are limitations in shortening the focal length f2 between the focal point F and the corresponding projection lens.

[0088] Therefore, in an embodiment of the present invention, the plurality of projection lenses 3210 are formed such that the length c2 in the vertical direction is longer than the length c1 in the horizontal direction, so that the plurality of projection lenses 3210 have appropriate sizes, and the image formed by the light emitted from the vehicle lamp 1 of the present invention has uniform overall brightness, and prevents the light traveling in parallel through each of the plurality of shielding members 3300 from being incident on other projection lenses adjacent to the corresponding projection lens among the plurality of projection lenses 3210.

[0089] In addition, as described above, even when the focal length f1 between the focal point F and the corresponding incident lens and the focal length f2 between the focal point F and the corresponding projection lens are appropriately adjusted, and the length c1 in the horizontal direction and the length c2 in the vertical direction of the plurality of projection lenses 3210 are appropriately adjusted, as Figure 13 shown, in the light La and Lb incident on each of the plurality of incident lenses 3110, since the light Lb traveling to a position near the upper end of the corresponding projection lens among the plurality of projection lenses 3210 may irradiate the upper side of the cut-off line, glare may be generated. Therefore, in the plurality of projection lenses 3210, an additional shielding member 3400 is formed between the projection lenses adjacent in the vertical direction to prevent glare.

[0090] At this time, in Figure 13 , the dotted arrow indicates the optical path in the case where the additional shielding member 3400 is not formed. It is incident on a position near the upper end of the projection lens and is not refracted sufficiently downward, thus becoming a cause of glare.

[0091] In an embodiment of the present invention, when the additional shielding member 3400 is formed to prevent glare, the cost may increase and the manufacturing process may become complicated. Therefore, even if the additional shielding member 3400 is not formed, the light irradiated in unnecessary directions can be reduced.

[0092] Therefore, in an embodiment of the present invention, based on any one of the above lens characteristics, the corresponding incident lens and emission lens among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 can be formed such that the ratio of the lens characteristics of the emission lens to the lens characteristics of the incident lens has a plurality of different ratios from each other.

[0093] For example, generally, the corresponding incident lens and emission lens among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 are formed as follows: the ratio of the focal length of the emission lens to the focal length of the incident lens all has the same ratio, and the ratio of the diameter of the emission lens to the diameter of the incident lens all has the same ratio. However, in an embodiment of the present invention, the corresponding incident lens and emission lens can be formed as follows: the ratio of the focal length of the emission lens to the focal length of the incident lens has a plurality of different ratios from each other, or the ratio of the diameter of the emission lens to the diameter of the incident lens has a plurality of different ratios from each other.

[0094] In an embodiment of the present invention, the emission lens having a plurality of different ratios of lens characteristics relative to the incident lens is to reduce the light irradiated in an unnecessary direction while satisfying the light distribution characteristics of the light beam pattern formed by the vehicle lamp 1 of the present invention, thereby improving glare.

[0095] Hereinafter, in an embodiment of the present invention, as the lens characteristics, the focal length and the diameter are taken as examples for description, but this is only an example for helping to understand the present invention and is not limited thereto. A variety of lens characteristics can be similarly applied, and they can control the path of the light incident on the corresponding incident lens among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 and emitted through the emission lens.

[0096] Figure 14 is a schematic diagram showing the light path corresponding to the focal length of the emission lens according to an embodiment of the present invention, Figure 14 is an example in the case where the focal lengths of the incident lenses are all the same and the focal lengths of the emission lenses are different.

[0097] Refer to Figure 14 , the plurality of incident lenses 3110 may include a first incident lens 3111 and a second incident lens 3112, and the plurality of emission lenses 3210 may include a first emission lens 3211 corresponding to the first incident lens 3111 and a second emission lens 3212 corresponding to the second incident lens 3112.

[0098] The first incident lens 3111 and the second incident lens 3112 are a general term for two different incident lenses among the plurality of incident lenses 3110, and can be understood as two incident lenses that are adjacent to each other or spaced apart among the plurality of incident lenses 3110.

[0099] In addition, similar to the first incident lens 3111 and the second incident lens 3112, the first emission lens 3211 and the second emission lens 3212 are also a general term for two different types of emission lenses among the plurality of emission lenses 3210, and can be understood as two emission lenses that are adjacent to or separated from each other among the plurality of emission lenses 3210.

[0100] In an embodiment of the present invention, the case where the first incident lens 3111 and the second incident lens 3112 are two incident lenses separated from each other, and the first emission lens 3211 and the second emission lens 3212 are also two emission lenses separated from each other like the first incident lens 3111 and the second incident lens 3112 will be described as an example.

[0101] The focal point F11 of the first incident lens 3111 and the focal point F12 of the first emission lens 3211 may be formed at the same position. The focal point F21 of the second incident lens 3112 and the focal point F22 of the second emission lens 3212 may be formed at different positions from each other. In an embodiment of the present invention, the case where the focal lengths of the plurality of incident lenses 3110 are the same will be described as an example. Therefore, it can be understood that the focal points F11 and F21 are formed at the same position in the front-rear direction.

[0102] In an embodiment of the present invention, the case where the focal point F11 of the first incident lens 3111 and the focal point F12 of the first emission lens 3211 are formed at the same position will be described as an example. However, this is because in order to satisfy the light distribution characteristics of the light beam pattern formed by the vehicle lamp 1 of the present invention, incident lenses and emission lenses in which the focal points among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 are formed at the same position are required, and it is not limited thereto. The first incident lens 3111 and the first emission lens 3211 may include incident lenses and emission lenses having different ratios of lens characteristics from those of the second incident lens 3112 and the second emission lens 3212.

[0103] In an embodiment of the present invention, forming the focal points F21 and F22 of the second incident lens 3112 and the second emission lens 3212 at different positions from each other will reduce the light irradiated in an unnecessary direction, thereby improving glare.

[0104] In other words, generally, among the plurality of incident lenses 3110 and the plurality of exit lenses 3210, the corresponding incident lens and exit lens are formed such that: the ratio of the focal length of the exit lens to the focal length of the incident lens is all the same. However, in this case, when the light incident on a position near the upper end portion of the exit lens cannot be sufficiently refracted downward and is irradiated above the cut-off line, it may cause glare. Thus, as described above, it is necessary to form an additional shield 3400 for preventing glare in front of the plurality of shields 3300, which may increase the manufacturing cost and manufacturing process.

[0105] In an embodiment of the present invention, in order to make the focal length f22 of the second exit lens 3212 relatively shorter than the focal length f21 of the first exit lens 3211, the curvature r2 of the second exit lens 3212 is formed to be larger than the curvature r1 of the first exit lens 3211, so that the light incident on a position near the upper end portion of the second exit lens 3212 is sufficiently refracted downward and exits, thereby improving glare. In this case, since the light irradiated in an unnecessary direction can be reduced without forming an additional shield 3400 for preventing glare in front of the plurality of shields 3300, the manufacturing cost and manufacturing process can be reduced.

[0106] When the focal length f22 of the second exit lens 3212 is relatively shorter than the focal length f21 of the first exit lens 3211, the ratio (f22 / f12) of the focal length f22 of the second exit lens 3212 to the focal length f12 of the second incident lens 3112 is made smaller than the ratio (f21 / f11) of the focal length f21 of the first exit lens 3211 to the focal length f11 of the first incident lens 3111. In an embodiment of the present invention, the case where the focal length f11 of the first incident lens 3111 is the same as the focal length f12 of the second incident lens 3112 is taken as an example for explanation. Therefore, it can be understood that, depending on the difference between the focal length f21 of the first exit lens 3211 and the focal length f22 of the second exit lens 3212, among the plurality of incident lenses 3110 and the plurality of exit lenses 3210, the ratio of the focal length of the corresponding exit lens to the focal length of the incident lens will be different.

[0107] At this time, among the plurality of incident lenses 3110 and the plurality of emission lenses 3210, the ratio of the focal lengths between the corresponding incident lens and emission lens is preferably equal to or less than the ratio of the focal lengths (f21 / f11) between the first incident lens 3111 and the first emission lens 3211. This is because when the ratio of the focal lengths of the corresponding incident lens and emission lens is greater than the ratio of the focal lengths (f21 / f11) between the first incident lens 3111 and the first emission lens 3211, it means that the curvature of the emission lens becomes relatively smaller, and thus the focal length becomes longer. In this case, the light incident on the position near the upper end of the emission lens is more difficult to be sufficiently refracted downward.

[0108] As described above, when the focal point F11 of the first incident lens 3111 and the focal point F12 of the first emission lens 3211 are formed at the same position, and the focal point F21 of the second incident lens 3112 and the focal point F22 of the second emission lens 3212 are formed at different positions, a part of the light L11 and L12 incident on the first incident lens 3111, i.e., the light L11, passes through the first shield 3310 among the plurality of shields 3300 and is emitted through the first emission lens 3211. Another part of the light L12 is incident on the position near the upper end of the first emission lens 3211, which may cause glare. A part of the light L21 and L22 incident on the second incident lens 3112, i.e., the light L21, can pass through the second shield 3320 among the plurality of shields 3300 and be emitted through the second emission lens 3212. Another part of the light L22 is incident on the upper end of the second emission lens 3212 and is refracted downward more than the above-mentioned first emission lens 3211 and then emitted. Therefore, the light that causes glare can be reduced, and thus glare can be improved.

[0109] At this time, in Figure 14 the dotted arrow shows an example of the path of the light incident on the upper end of the second emission lens 3212 and emitted when the curvatures of the first emission lens 3211 and the second emission lens 3212 are the same.

[0110] In an embodiment of the present invention, an example is described in which the plurality of emission lenses 3210 are formed such that the focal length of the emission lens gradually increases or decreases from one side to the other side in at least one direction, which is convenient for injection molding. However, this is only an example for helping to understand the present invention and is not limited thereto. It may include various cases in which a part and another part of the plurality of emission lenses 3210 are formed to have different focal lengths from each other.

[0111] In addition, in the embodiments of the present invention, the case where the focal lengths of the plurality of incident lenses 3110 are all the same is taken as an example for description. However, this is only an example for helping to understand the present invention and is not limited thereto. In the plurality of incident lenses 3110 and the plurality of exit lenses 3210, since the ratio of the focal length of the corresponding exit lens to the focal length of the incident lens is relative, it can also be similarly applied to the case where the focal lengths of the plurality of exit lenses 3210 are all the same and the focal length of each of the plurality of incident lenses 3110 gradually increases or decreases from one side to the other side in at least one direction.

[0112] That is, in the embodiments of the present invention, by appropriately adjusting the ratio of the incident lens and the exit lens with the same focal position, the ratio of the incident lens and the exit lens with different focal positions, and the ratio of the focal length of the corresponding exit lens to the focal length of the incident lens in the plurality of incident lenses 3110 and the plurality of exit lenses 3210, it is possible to improve glare while satisfying the light distribution characteristics of the light beam pattern.

[0113] Figure 15 is a schematic diagram showing the optical path corresponding to the diameter of the exit lens according to an embodiment of the present invention, Figure 15 is an example of the optical path in the case where the diameters of the incident lenses are all the same and the diameters of the exit lenses are different.

[0114] Referring to Figure 15 , the plurality of incident lenses 3110 may include a first incident lens 3111 and a second incident lens 3112, and the plurality of exit lenses 3210 may include a first exit lens 3211 corresponding to the first incident lens 3111 and a second exit lens 3212 corresponding to the second incident lens 3112.

[0115] The first incident lens 3111 and the second incident lens 3112 are a general term for different incident lenses among the plurality of incident lenses 3110, and can be understood as two types of incident lenses that are adjacent to each other or spaced apart from each other among the plurality of incident lenses 3110.

[0116] In addition, similar to the first incident lens 3111 and the second incident lens 3112, the first exit lens 3211 and the second exit lens 3212 are also a general term for different exit lenses among the plurality of exit lenses 3210, and can be understood as two types of exit lenses that are adjacent to each other or spaced apart from each other among the plurality of exit lenses 3210.

[0117] In an embodiment of the present invention, two incident lenses, i.e., a first incident lens 3111 and a second incident lens 3112, are spaced apart from each other, and a first emission lens 3211 and a second emission lens 3212 are also two emission lenses spaced apart from each other in the same way as the first incident lens 3111 and the second incident lens 3112. This will be described as an example.

[0118] At this time, in Figure 15 the focal point F11 of the first incident lens 3111 and the focal point F12 of the first emission lens 3211 can be formed at the same position, and the focal point F21 of the second incident lens 3112 and the focal point F22 of the second emission lens 3212 can also be formed at the same position. Thus, the focal lengths f11 and f12 of each of the first incident lens 3111 and the second incident lens 3112 are the same, and the focal lengths f21 and f22 of each of the first emission lens 3211 and the second emission lens 3212 are the same.

[0119] In addition, the diameters of the first incident lens 3111 and the second incident lens 3112 can be formed to be the same. The diameter d1 of the first emission lens 3211 can be the same as the diameter of the first incident lens 3111, and the diameter d2 of the second emission lens 3212 can be formed to be larger than the diameter d1 of the first emission lens 3211. In the embodiment of the present invention, making the diameters d1 of the first emission lens 3211 and d2 of the second emission lens 3212 different from each other is to reduce the light irradiated in an unnecessary direction, thereby improving glare.

[0120] In an embodiment of the present invention, preferably, each of the plurality of emission lenses 3210 has a diameter greater than or equal to the diameter of the corresponding incident lens among the plurality of incident lenses 3110. This is because when the diameter of the emission lens is smaller than the diameter of the corresponding incident lens, a part of the light incident on the corresponding incident lens cannot be incident on the corresponding emission lens, thereby reducing the light efficiency.

[0121] The first incident lens 3111 and the first emission lens 3211 have the same diameter because there is a need to have incident lenses and emission lenses with the same diameter among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 to meet the light distribution characteristics required by the light beam pattern formed by the vehicle lamp 1 of the present invention.

[0122] For example, when the diameter of the corresponding emission lens is greater than that of the incident lens, the region emitted through the emission lens is relatively more diffused, making it difficult for the region set in the light beam pattern to have the required brightness. Therefore, among the plurality of incident lenses 3110 and the plurality of emission lenses 3210, incident lenses and emission lenses with the same diameter are required, but it is not limited thereto. The first incident lens 3111 and the first emission lens 3211 may include incident lenses and emission lenses with different ratios of lens characteristics from those of the second incident lens 3211 and the second emission lens 3212.

[0123] When the diameters of the first incident lens 3111 and the second incident lens 3112 are d0, and the diameter d2 of the second emission lens 3212 is formed to be greater than the diameter d1 of the first emission lens 3211, the ratio (d2 / d0) of the diameter d2 of the second emission lens 3212 to the diameter d0 of the second incident lens 3112 is greater than the ratio (d1 / d0) of the diameter d1 of the first emission lens 3211 to the diameter d0 of the first incident lens 3111. In an embodiment of the present invention, the case where the diameters of the plurality of incident lenses 3110 are all the same is taken as an example for description. Therefore, it can be understood that due to the diameter difference between the first emission lens 3211 and the second emission lens 3212, among the plurality of incident lenses 3110 and the plurality of emission lenses 3210, the ratios of the diameters of the corresponding emission lenses to the diameters of the incident lenses are different.

[0124] At this time, the diameter ratio between the corresponding incident lens and emission lens among the plurality of incident lenses 3110 and the plurality of emission lenses 3210 is preferably equal to or greater than the diameter ratio (d1 / d0) between the first incident lens 3111 and the first emission lens 3211. This is because a ratio of the diameters of the corresponding incident lens and emission lens that is less than the diameter ratio (d1 / d0) between the first incident lens 3111 and the first emission lens 3211 means that the diameter of the emission lens is smaller than that of the corresponding incident lens. In this case, a part of the light incident on the incident lens cannot be emitted through the emission lens, thereby reducing the light efficiency.

[0125] As described above, when the diameters of the first incident lens 3111 and the first exit lens 3211 are the same and the second exit lens 3212 has a diameter larger than that of the second incident lens 3112, part of the light L31, L32 incident on the first incident lens 3111, i.e., the light L31, passes through the first shield 3310 among the plurality of shields 3300 and is emitted through the first exit lens 3211, and the other part of the light L32 is incident on a position near the upper end of the first exit lens 3211 and becomes a cause of glare. However, since the second exit lens 3212 is formed to have a diameter larger than that of the second incident lens 3112, part of the light L41, L42 incident on the second incident lens 3112, i.e., the light L41, passes through the second shield 3320 among the plurality of shields 3300 and is emitted through the second exit lens 3212, and the other part of the light L42 traveling to the upper end of the second exit lens 3212 is incident on a position spaced downward from the upper end of the first exit lens 3211 by a greater distance. Therefore, it can be refracted and emitted sufficiently in the downward direction, thereby reducing the light causing glare and improving the glare.

[0126] At this time, in Figure 15 the dashed arrows show an example of the path of the light emitted when incident on the upper end of the second exit lens 3212 in the case where the second exit lens 3212 has the same diameter as the first exit lens 3211.

[0127] In an embodiment of the present invention, an example is described in which the plurality of exit lenses 3210 are formed such that the diameter of the exit lens gradually increases or decreases from one side to the other side in at least one direction, facilitating injection molding. However, this is only an example for helping to understand the present invention and is not limited thereto. It may include a case where part of the plurality of exit lenses 3210 is formed to have a different diameter from the other part.

[0128] In addition, in an embodiment of the present invention, an example is described in which the diameters of all the plurality of incident lenses 3110 are the same. However, this is only an example for helping to understand the present invention and is not limited thereto. Since in the plurality of incident lenses 3110 and the plurality of exit lenses 3210, the ratio of the diameter of the corresponding exit lens to the diameter of the incident lens is relative, it can be similarly applied to the case where the diameters of all the plurality of exit lenses 3210 are the same and the diameters of the plurality of incident lenses 3110 gradually increase or decrease from one side to the other side in at least one direction.

[0129] That is, in the embodiments of the present invention, the glare can be improved while satisfying the light distribution characteristics of the light beam pattern by appropriately adjusting the ratio of the incident lenses and the exit lenses having the same diameter, the ratio of the incident lenses and the exit lenses having different diameters from each other, and the ratio of the diameter of the corresponding exit lens to the diameter of the incident lens among the plurality of incident lenses and the plurality of exit lenses.

[0130] In addition, in the above embodiments, the ratio of the focal length of the corresponding exit lens to the focal length of the incident lens and the ratio of the diameter of the corresponding exit lens to the diameter of the incident lens among the plurality of incident lenses 3110 and the plurality of exit lenses 3210 are respectively described. However, the present invention is not limited thereto. By combining the ratio of the focal length of the corresponding exit lens to the focal length of the incident lens and the ratio of the diameter of the corresponding exit lens to the diameter of the incident lens, the glare can be improved while satisfying the light distribution characteristics.

[0131] As described above, the vehicle lamp 1 of the present invention makes the lens characteristics of the corresponding exit lenses different from each other with respect to the lens characteristics of the incident lenses among the plurality of incident lenses 3110 and the plurality of exit lenses 3210. Therefore, among the plurality of incident lenses 3110 and the plurality of exit lenses 3210, compared with the case where the lens characteristics of the corresponding exit lenses are all the same with respect to the lens characteristics of the incident lenses, the light can be prevented from irradiating in unnecessary directions while satisfying the light distribution characteristics of the light beam pattern.

[0132] Those skilled in the art to which the present invention pertains will presumably understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features. Therefore, the above-described embodiments are exemplary in all respects, and it should be understood that they are not restrictive embodiments. The scope of the present invention is not defined by the foregoing detailed description, but by the claims, and all changes or variations that can be derived from the meaning, scope, and equivalent concepts of the claims should be construed as being included in the scope of the present invention.

Claims

1. A vehicle lamp, as a vehicle lamp that forms a predetermined beam pattern by means of at least one lamp module, wherein: The at least one lamp module comprises: A light source unit, comprising at least one light source; an optical path conversion unit for converting the path of light emitted from the light source unit; and an optical part that transmits at least a portion of the light emitted from the optical path conversion part to form the beam pattern, The optical part includes a plurality of incident lenses and a plurality of exit lenses corresponding to the plurality of incident lenses respectively. Among the plurality of incident lenses and the plurality of exit lenses, ratios of lens characteristics of the exit lenses corresponding to each other with respect to lens characteristics of the incident lenses have a plurality of ratios different from each other.

2. The vehicle lamp according to claim 1, wherein: The lens characteristic includes at least one of curvature and diameter.

3. The vehicle lamp according to claim 1, wherein: Among the plurality of incident lenses and the plurality of exit lenses, the focal lengths of the incident lenses corresponding to each other are longer than the focal lengths of the exit lenses.

4. The vehicle lamp according to claim 1, wherein: The plurality of incident lenses include a first incident lens and a second incident lens, The plurality of emission lenses include a first emission lens and a second emission lens corresponding to the first incident lens and the second incident lens, respectively. A ratio of a focal length of the first output lens to a focal length of the first input lens and a ratio of a focal length of the second output lens to a focal length of the second input lens are different from each other.

5. The vehicle lamp according to claim 4, wherein: In the plurality of incident lenses and the plurality of exit lenses, a ratio of a focal length of the exit lenses corresponding to each other to a focal length of the incident lens gradually increases or decreases from one side toward the other side in at least one direction.

6. The vehicle lamp according to claim 4, wherein: The plurality of incident lenses and one of the plurality of exit lenses may have the same focal length.

7. The vehicle lamp according to claim 4, wherein: The first incident lens and the first exit lens form focal points at the same position, and the second incident lens and the second exit lens form focal points at positions different from each other.

8. The vehicle lamp according to claim 7, wherein: In the plurality of input lenses and the plurality of output lenses, a ratio of a focal length of a corresponding output lens to a focal length of an input lens is equal to or less than a ratio of a focal length of the first input lens to a focal length of the first output lens.

9. The vehicle lamp according to claim 4, wherein: The first incident lens and the second incident lens have different curvatures from each other to have different focal lengths from each other.

10. The vehicle lamp according to claim 4, wherein: The first and second output lenses may have different curvatures from each other to have different focal lengths from each other.

11. The vehicle lamp according to claim 1, wherein: The plurality of incident lenses include a first incident lens and a second incident lens, The plurality of emission lenses include a first emission lens and a second emission lens respectively connected to each of the first incident lens and the second incident lens, A ratio of a diameter of the first output lens to a diameter of the first input lens and a ratio of a diameter of the second output lens to a diameter of the second input lens are different from each other.

12. The vehicle lamp according to claim 11, wherein: In the plurality of incident lenses and the plurality of exit lenses, a ratio of a diameter of the exit lenses corresponding to each other to a diameter of the incident lenses gradually increases or decreases from one side toward the other side in at least one direction.

13. The vehicle lamp according to claim 11, wherein: The plurality of incident lenses and one of the plurality of exit lenses have the same diameter.

14. The vehicle lamp according to claim 11, wherein: The first incident lens and the first exit lens have the same diameter, and the second incident lens and the second exit lens have different diameters from each other.

15. The vehicle lamp according to claim 14, wherein: In the plurality of input lenses and the plurality of output lenses, a ratio of a diameter of a corresponding output lens to a diameter of an input lens is equal to or greater than a ratio of a diameter of the first output lens to a diameter of the first input lens.

16. The vehicle lamp according to claim 11, wherein: The first incident lens and the second incident lens have different diameters from each other.

17. The vehicle lamp according to claim 11, wherein: The first exit lens and the second exit lens have different diameters from each other.

18. The vehicle lamp according to claim 1, wherein: Each of the plurality of emission lenses is formed so that its length in the up-down direction is greater than its length in the left-right direction.

19. The vehicle lamp according to claim 1, wherein: The optical part further comprises: A plurality of shields shield a portion of light traveling toward each of the plurality of exit lenses.

20. The vehicle lamp according to claim 1, wherein: The optical portion is obliquely formed so that one side is located further forward than the other side in at least one direction.

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