Lamp for a vehicle

Abstract

The present application relates to a lamp for a vehicle. A lamp for a vehicle includes a light source device that generates and outputs light, and a lens array disposed in front of the light source device. The lens array includes a first lens device including a plurality of first microlenses to receive the light from the light source device, and a second lens device including a plurality of second microlenses disposed to irradiate light incident thereto from the first lens device onto a road surface to form a specific light beam pattern. The light beam pattern is divided into a plurality of pattern regions depending on a distance from the lamp for a vehicle. The lens array is divided into a plurality of division regions respectively corresponding to the plurality of pattern regions.

Description

Technical Field

[0001] This disclosure relates to lamps for vehicles, and more specifically, to lamps for vehicles employing microlens arrays. Background Technology

[0002] Microlens arrays (MLAs) project images by arranging multiple microlenses. Smaller MLAs exhibit excellent image quality, and therefore have been widely used in various fields. Recently, research and development have been undertaken to reduce the size of vehicle lights (or headlights) by using microlenses with shorter focal lengths.

[0003] When a vehicle headlight with such a microlens array illuminates the road surface at an angle, the amount of light may decrease relative to a longer pattern distance, potentially compromising pattern uniformity. Therefore, techniques are needed to improve the uniformity of the optical pattern by minimizing light loss.

[0004] When a vehicle headlight with a microlens array illuminates the road surface at an angle, its resolution and optical performance may degrade. Furthermore, traditionally, optical systems are mounted at an angle, causing the light to be projected onto the road surface at an oblique angle. In this case, the internal area occupied by the optical system increases, resulting in a larger headlight size.

[0005] Furthermore, welcome ceremony technology typically provides drivers with various information, such as the vehicle's status before driving, thereby significantly improving convenience and productivity. An example of welcome ceremony technology is a welcome light or puddle lamp that illuminates on the side surfaces of the vehicle to form a beam pattern when the vehicle is unlocked via the smart key. Therefore, welcome lights or puddle lamps are technologies that improve vehicle productivity and provide information such as parking location.

[0006] Recently, projection optical systems equipped with microlens arrays have been used in vehicle lights to display specific information on the road surface, similar to welcome lights.

[0007] However, traditional projection optical systems are designed to produce only one pattern in the form of static images. Therefore, traditional projection optical systems may not be able to produce dynamic images. According to related technologies, when producing dynamic images, visibility may not be guaranteed, or the information may be difficult to understand intuitively.

[0008] Furthermore, according to existing technology, because the optical system is configured to generate an image, brightness differences arise between the longer-distance and shorter-distance patterns of the light beam illuminating the road surface. Therefore, pattern uniformity may not be guaranteed. Summary of the Invention

[0009] This disclosure aims to solve the aforementioned problems in the related art while maintaining the advantages achieved by the related art.

[0010] One aspect of the present invention provides a vehicle lamp in which a lens array is designed for each zone area to achieve an optical system with optimal azimuth angle and optimal luminous intensity, thereby improving the light uniformity of the beam pattern illuminating the road surface.

[0011] The technical problems to be solved by the present invention are not limited to those described above, and any other technical problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

[0012] According to one aspect of this disclosure, a lamp for a vehicle includes a light source device for generating and outputting light, and a lens array disposed in front of the light source device. The lens array includes: a first lens device comprising a plurality of first microlenses for receiving light from the light source device; and a second lens device comprising a plurality of second microlenses configured to irradiate light input from the first lens device onto a road surface to form a specific beam pattern. The beam pattern is divided into a plurality of pattern regions according to a distance from the lamp for the vehicle. The lens array is divided into a plurality of partitioned regions corresponding to the plurality of pattern regions, and is configured to increase the focal length of the second microlenses disposed in the partitioned regions corresponding to the pattern regions as the pattern regions are located at a greater distance from the lamp for the vehicle.

[0013] The lamp may also include a shielding portion located between the first lens assembly and the second lens assembly to shield a portion of the light from the first lens assembly to the second lens assembly, thereby forming a specific beam pattern on the road surface.

[0014] The shielding portion may include multiple unit masks, each configured to correspond to a plurality of second microlenses, and having a mask pattern for forming a beam pattern. Each unit mask may include a shielding region configured to block light, and a light-transmitting region configured to transmit light and having a shape corresponding to the mask pattern.

[0015] The lamp can be configured to reduce the curvature of the second microlens located in the dividing area corresponding to the patterned area as the patterned area is located at a longer distance from the lamp used for the vehicle.

[0016] The lamp can be configured to increase the thickness of the second microlens located in the corresponding dividing area of ​​the pattern area as the pattern area is located at a longer distance from the lamp used for the vehicle.

[0017] The first and second microlenses, located in the same partition region, can be formed to have the same width in the vertical direction, and the width is within the range of processing error.

[0018] The lamp can be configured to increase the curvature of the first microlens located in the dividing area corresponding to the patterned area as the patterned area is located at a longer distance from the lamp used for the vehicle.

[0019] Assuming the optical axis of the light output from the light source device and incident on the first lens device is called the first optical axis, and the optical axis of the light output from the second lens device is called the second optical axis, the lens array is formed such that the second optical axis is tilted relative to the first optical axis to extend toward the road surface.

[0020] As the patterned area is located at a greater distance from the lamps used on the vehicle, the size of the acute angle in the angle formed between the first and second optical axes in the partitioned area corresponding to the patterned area decreases.

[0021] For example, the second lens device may further include a second light-transmitting body, which includes a second microlens formed on a surface in a direction opposite to that facing the light source device and configured to transmit light. The second microlens may be disposed in the second light-transmitting body such that the thickness direction of the second microlens is inclined relative to the direction of the first optical axis.

[0022] Multiple segmented regions can be placed in a quadrant plate obtained by dividing the lens array with respect to the optical axis of the light source device. These multiple segmented regions can be configured to form patterned regions at progressively longer distances from the vehicle's lamps, starting from the segmented region corresponding to the patterned region located at the closest distance to the lamps.

[0023] The lamps for vehicles may also include a drive shielding unit. The drive shielding unit may include a rotating shielding member inserted between the light source device and the lens array, the rotating shielding member having an opening formed through the rotating shielding member with a size corresponding to one of a plurality of partitioned areas and being configured to be rotatable.

[0024] The rotating masking element can be formed in the shape of a disk perpendicular to the optical axis of the light source device. The driving masking unit may include a drive motor that provides driving force, and a transmission gear connected to the drive motor and meshing with a gear formed at the edge of the rotating masking element. The driving masking unit can be configured to change the lamp image of the beam pattern by changing the position of the opening as the rotating masking element rotates. Attached Figure Description

[0025] The above and other objects, features and advantages of the present invention will become clearer from the following detailed description taken in conjunction with the accompanying drawings: Figure 1 This is a diagram illustrating a vehicle headlight mounted on a vehicle according to a first embodiment of the present disclosure; Figure 2This is a perspective view illustrating a vehicle lamp according to a first embodiment of the present disclosure; Figure 3 This is a cross-sectional view illustrating a vehicle lamp according to a first embodiment of the present disclosure; Figure 4 This is a front view illustrating a lens array according to a first embodiment of the present disclosure; Figure 5 This is a diagram illustrating a unit mask of a shielding portion according to a first embodiment of the present disclosure; Figure 6 This is a cross-sectional view illustrating a vehicle lamp according to a first embodiment of the present disclosure, which illustrates... Figure 3 A magnified view of a portion; Figure 7 This is a cross-sectional view of a vehicle lamp according to a modified example of the first embodiment of the present disclosure; Figure 8A This is a diagram illustrating the central region (i.e., the cell mask disposed in the first region) of the lens array according to the present disclosure; Figure 8B This is a diagram illustrating a unit mask inserted between the central region and the edge region of a lens array according to the present disclosure; Figure 8C This is a diagram illustrating a unit mask disposed in the edge region of a lens array according to the present disclosure; Figure 9 The diagram schematically illustrates a vehicle headlight according to a second embodiment of the present disclosure; Figure 10 The diagram schematically illustrates a vehicle headlight according to a comparative example of the present disclosure; Figure 11 This is an example of a cross-sectional view of a vehicle lamp according to a second embodiment of the present disclosure; Figure 12 This is a diagram illustrating a modified example of a vehicle headlight according to the second embodiment of the present disclosure; Figure 13 This is a diagram illustrating a vehicle headlight according to another variation of the second embodiment of the present disclosure; Figure 14 This is a cross-sectional view illustrating a vehicle lamp according to another variation of the second embodiment of the present disclosure; Figure 15 This is an exploded perspective view illustrating a vehicle headlight according to a third embodiment of the present disclosure; Figure 16 It is based on the third embodiment of this disclosure. Figure 15 A cross-sectional view of the car headlights; Figure 17 This illustrates the formation of Figure 16 A diagram of the unit mask within the occlusion body; Figures 18A to 18D The image shows a pattern of light beams projected onto the road surface; Figure 19 This is a diagram illustrating a vehicle headlight installed in a vehicle according to a fourth embodiment of the present disclosure; Figure 20 This is a perspective view illustrating a vehicle headlight according to the fourth embodiment of the present disclosure; Figure 21 This is a cross-sectional view illustrating a vehicle lamp according to the fourth embodiment of the present disclosure; Figure 22A A portion of the first partition region of a lens array according to a fourth embodiment of the present disclosure is illustrated; Figure 22B A portion of the fourth partition region of a lens array according to a fourth embodiment of the present disclosure is illustrated; Figure 23 This is a cross-sectional view of a vehicle lamp according to a modified example of the fourth embodiment of the present disclosure; Figure 24A This is an enlarged cross-sectional view illustrating the first partition region of the lens array according to the fourth embodiment of the present disclosure; Figure 24B This is an enlarged cross-sectional view illustrating the second dividing region of the lens array; Figure 24C This is an enlarged cross-sectional view illustrating the fourth dividing region of the lens array; Figure 25 This is a cross-sectional view illustrating a vehicle lamp according to another variation of the fourth embodiment of the present disclosure; Figure 26 This is a cross-sectional view illustrating a vehicle lamp according to another variation of the fourth embodiment of the present disclosure; Figure 27 This is an example Figure 26 A cross-sectional view of the vehicle's headlights; and Figures 28A to 28D This is a diagram illustrating the operation of a vehicle light according to another embodiment of the fourth embodiment of this disclosure. Detailed Implementation

[0026] In the following description, exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0027] The following embodiments are embodiments suitable for enabling those skilled in the art to understand the technical features of the lamps for vehicles according to this disclosure. However, this disclosure or its features are not limited to the embodiments described below, and various modifications can be made within the technical scope of this disclosure.

[0028] According to this disclosure, the vehicle lamps 100, 200, 300 or 400, which use microlens arrays, may be, for example, guide lights, to achieve a patterned image with a specific shape on the road surface 2 by projecting light onto the road surface 2 near the vehicle 1.

[0029] For example, according to this disclosure, vehicle lights 100, 200, 300, or 400 can be reversing guide lights, welcome guide lights, and turn signal guide lights that illuminate together with the reversing lights. It will be noted that vehicle lights 100, 200, 300, or 400 according to this disclosure are reversing guide lights (see...). Figure 1 ) or turn signals (see Figure 15 The following description is made in the context of the following situation. In addition, according to this disclosure, various types of vehicle lights, such as 100, 200, 300 or 400, can be used without limitation as long as the vehicle lights illuminate the road surface in a specific pattern.

[0030] In this situation, the headlights 100, 200, 300, or 400 illuminate the road surface while frequently tilting. Therefore, a brightness difference can occur between a longer pattern area located at a greater distance from the headlight and a shorter pattern area located at a shorter distance from the headlight. In other words, the brightness of the longer pattern area becomes dimmer than the brightness of the shorter pattern area, thus degrading light uniformity. This disclosure proposes a technique to solve the above problems.

[0031] First Implementation Method

[0032] Figures 1 to 8C The first embodiment of this disclosure is illustrated. Figure 1 This is a diagram illustrating a vehicle headlight installed in a vehicle according to a first embodiment of the present disclosure. Figure 2 This is a perspective view illustrating a vehicle headlight according to a first embodiment of the present disclosure. Figure 3 This is a cross-sectional view illustrating a vehicle lamp according to a first embodiment of the present disclosure. Figure 4 This is a front view illustrating a lens array according to a first embodiment of the present disclosure. Figure 5 This is a diagram illustrating a unit mask of a shielding portion according to a first embodiment of the present disclosure. Figure 6 This is a cross-sectional view illustrating a vehicle lamp according to a first embodiment of the present disclosure, which illustrates... Figure 3 A magnified view of a portion of it. Figure 7 This is a cross-sectional view of a vehicle lamp according to a modified example of the first embodiment of the present disclosure. Figure 8A This is a diagram illustrating the central region (i.e., the cell mask disposed in the first region) of the lens array according to the present disclosure. Figure 8B This is a diagram illustrating a unit mask inserted between the central region and the edge region of a lens array according to the present disclosure. Figure 8C This is a diagram illustrating a unit mask disposed at the edge region of a lens array according to the present disclosure.

[0033] Reference Figures 1 to 8CAccording to a first embodiment of the present disclosure, the vehicle lamp 100 includes a light source device 110 and a lens array 130. Additionally, according to a first embodiment of the present disclosure, the vehicle lamp 100 may also include a shielding portion 160.

[0034] The light source device 110 is configured to generate and illuminate light. The lens array 130 is disposed in front of the light source device 110 so that the light incident from the light source device 110 onto the lens array 130 is output forward.

[0035] For example, the light source device 110 can be configured to illuminate the road surface 2. The light source device 110 may include a light source 111 and a collimator 113. For example, the light source 111 may be, but is not limited to, a light-emitting diode (hereinafter referred to as an LED). The collimator 113 can convert the light emitted from the light source 111 into light parallel to the optical axis and can allow the light to be incident into the first lens device 140.

[0036] The lens array 130 includes a first lens device 140 and a second lens device 150.

[0037] The first lens device 140 includes a plurality of first microlenses 141 for receiving light incident thereon from the light source device 110. The second lens device 150 includes a plurality of second microlenses 151 configured to output light incident from the first lens device 140.

[0038] For example, the first microlens 141 may include an incident surface protruding toward the light source device 110, and the incident surface of the first microlens 141 may form the entire incident surface of the first lens device 140. Alternatively, the second microlens 151 may include an output surface protruding toward the road surface 2, and the output surface of the second microlens 151 may form the entire output surface of the second lens device 150. However, the shapes of the first microlens 141 and the second microlens 151 are not limited to the shapes described above.

[0039] For example, the first lens device 140 may further include a first light-transmitting body 143. The first light-transmitting body 143 has a surface facing the light source device 110, and a first microlens 141 is formed on this surface. The first light-transmitting body 143 may include a material for transmitting light.

[0040] Alternatively, for example, the second lens device 150 may also include a second light-transmitting body 153. A second microlens 151 is formed on a surface facing a direction opposite to that facing the first light-transmitting body 143 to transmit light. Furthermore, the second light-transmitting body 153 may be configured to face the first light-transmitting body 143, with a shielding portion 160 inserted between the first light-transmitting body 143 and the second light-transmitting body 153.

[0041] The first light-transmitting body 143 and the second light-transmitting body 153 can be used as the main body for integrally forming the first lens device 140 and the second lens device 150. However, this disclosure is not limited thereto. When the first lens device 140 and the second lens device 150 are not integrally formed, at least one of the first light-transmitting body 143 and the second light-transmitting body 153 can be omitted.

[0042] Furthermore, at least a portion of the first microlens 141 has a vertical dimension smaller than that of the second microlens 151, which is disposed corresponding to at least a portion of the first microlens 141.

[0043] In detail, when viewed from the rear of the lens array 130, the central region through which the optical axis of the light source device 110 passes in a local area of ​​the lens array 130 is referred to as the first region "I", and the region surrounding the first region "I" in the remaining areas of the lens array 130 is referred to as the second region "II". In this case, the vertical dimension of the first microlens 141 disposed in the second region "II" can be smaller than the vertical dimension of the second microlens 151 disposed in the second region "II".

[0044] More specifically, when viewed from the incident side of the first lens device 140, in the first region "I", which is the central region representing the highest value of the brightness of the light irradiated from the light source device 110, the dimensions of the first microlens 141 and the second microlens 151 in the vertical direction can be formed to be equal to or approximately the same as each other.

[0045] Furthermore, when viewed from the incident side of the first lens device 140, in the second region "II", which represents a lower value of the brightness of the light irradiated from the light source device 110 and serves as the surrounding region of the central region, the size of the first microlens 141 can be formed to be smaller than the size of the second microlens 151 in the vertical direction.

[0046] For example, according to the illustrated embodiment, in the second region "II", the vertical dimension of the second microlens 151 may be twice as large as the vertical dimension of the first microlens 141. However, this disclosure is not limited thereto. For example, in the second region "II", the vertical dimension of the second microlens 151 may be at least three times larger than the vertical dimension of the first microlens 141.

[0047] Assuming the thicknesses of the lenses are approximately the same, when the size of the lens in the vertical direction decreases, the curvature of the lens can increase, and when the curvature of the lens can increase, the amount of light incident through the lens can increase. According to a first embodiment of this disclosure, the first microlens 141 disposed in the second region "II" can be formed to have a smaller size in the vertical direction. Therefore, in the second region "II", which represents a lower value in the luminous intensity of the light emitted from the light source device 110, the amount of light incident through the first microlens 141 can be increased.

[0048] Therefore, according to this disclosure, the uniformity of light intensity incident on the entire area of ​​the first lens device 140 can be improved. Therefore, the uniformity of the beam pattern formed on the road surface 2 by the lens array 130 can be improved. Therefore, according to this disclosure, light intensity loss is minimized. Therefore, the uniformity of the beam pattern formed on the road surface 2 can be increased without employing an additional light source 111.

[0049] In this case, the curvature of the first microlens 141 disposed in the second region "II" in the vertical direction can be greater than the curvature of the first microlens 141 disposed in the first region "I".

[0050] Specifically, the first microlens 141 in the second region "II" can be formed to have a smaller radius of curvature than the first microlens 141 in the first region "I". Therefore, since the amount of light incident through the first microlens 141 in the second region "II" is increased, the loss of light can be minimized. Thus, the uniformity of light incident on the entire region of the first lens assembly 140 can be improved.

[0051] Furthermore, as the plurality of first microlenses 141 in the second region “II” move away from the first region “I”, the plurality of first microlenses 141 in the second region “II” can be formed to gradually decrease in size in the vertical direction.

[0052] In detail, the light illuminating the light source 111 and passing through the collimator 113 exhibits the highest luminous intensity in the central region of the first lens assembly 140, and the luminous intensity gradually decreases with distance from the central region. The plurality of first microlenses 141 disposed in the second region "II" can be configured to have a decreasing size in the vertical direction with distance from the central region. Therefore, the amount of light incident through the first microlenses 141 disposed in the second region "II" can be increased.

[0053] Furthermore, the shielding part 160 can be inserted between the first lens device 140 and the second lens device 150 to shield a portion of the light incident from the first lens device 140 to the second lens device 150, so that a specific beam pattern can be formed on the road surface 2.

[0054] In detail, the shielding portion 160 may include unit masks 161. Multiple unit masks 161 may be configured to correspond respectively to multiple second microlenses 151. Unit masks 161 may have mask patterns for forming beam patterns. In other words, unit masks 161 may be configured to correspond respectively to second microlenses 151 disposed on the output side of the lens array 130.

[0055] More specifically, the unit mask 161 may include a shielding region 162 configured to block light and a light-transmitting region 163 configured to transmit light and having a shape corresponding to the mask pattern. The image of the beam pattern projected onto the road surface 2 can vary depending on the shape of the light-transmitting region 163 (i.e., the shape of the mask pattern). For example, the unit mask 161 may be configured as a plate, and because the light is blocked in the shielding region 162, the unit mask 161 can form a specific beam pattern.

[0056] Furthermore, in the following text, the direction of the beam pattern away from the headlight 100 is defined as the longer distance direction, and the direction opposite to the longer distance direction is defined as the shorter distance direction.

[0057] In the second region “II”, a plurality of first microlenses 141 may be configured to correspond to a second microlens 151.

[0058] The shielding region 162 may include: a longer edge 162b configured to contact the end of the light-transmitting region 163 and forming an end line in the longer direction of the beam pattern; and a shorter edge 162a configured to face the longer edge 162b and forming an end line in the shorter direction of the beam pattern. For example, according to the illustrated embodiment, the longer edge 162b may contact the upper end of the light-transmitting region 163, while the shorter edge 162a may contact the lower end of the light-transmitting region 163.

[0059] In this case, the focal point F of the first microlens 141 that forms the beam pattern at the longest distance among the plurality of first microlenses 141 corresponding to a second microlens 151 can be formed at a position corresponding to the longer distance edge 162b. For example, referring to Figure 6 The first microlens 141, which is placed vertically on the upper part of the first microlens 141, can form a beam pattern at a longer distance. In addition, the focal point F of the first microlens 141 placed on the upper part can be positioned adjacent to the longer distance edge 162b.

[0060] As described above, since the focal point F of the first microlens 141 is located at the longer edge 162b, the point showing the maximum luminous intensity of the first microlens 141 is located at the longer edge 162b. Therefore, the uniformity of the beam pattern can be improved because the brightness of the beam pattern increases in the longer region.

[0061] However, as Figure 6 As shown, when the first microlens 141 placed in the upper part and the first microlens 141 placed in the lower part have the same curvature, the point showing the maximum luminous intensity of the first microlens 141 is even located at the shorter distance edge 162a. In this case, the pattern at the longer distance and the pattern at the shorter distance may be non-uniform.

[0062] like Figure 7 As shown, the curvature in the vertical direction of the first microlens 141 that forms the beam pattern at the longest distance, which corresponds to a second microlens 151, can be made greater than the curvature in the vertical direction of the other first microlenses 141 that correspond to the second microlens 151.

[0063] Therefore, as the radius of curvature of the first microlens 141 that illuminates the shorter distance region increases, the light-gathering efficiency can be reduced. Thus, since the brightness of the shorter distance region and the longer distance region are uniform in the beam pattern, the uniformity of the pattern can be improved.

[0064] Additionally, refer to Figure 7 The focal point F of the first microlens 141 that forms the beam pattern in the longest distance direction can be set to be located inside the light-transmitting region 163.

[0065] In addition, the focal point F of the remaining first microlenses 141, except for the first microlens 141 that forms the beam pattern in the longest distance direction, can be set at a spaced point located in front of or behind the light-transmitting region 163.

[0066] Therefore, the brightness of the longer distance regions and the shorter distance regions on the beam pattern are uniform, thereby improving the uniformity of the pattern.

[0067] also, Figure 8A This is an example diagram illustrating a cell mask 161 disposed in the central region (i.e., the first region "I") of a lens array 130 according to the present disclosure. Figure 8C This is a diagram illustrating a unit mask 161 disposed in the edge region of a lens array 130 according to the present disclosure. Figure 8B This is a diagram illustrating a unit mask 161 disposed between the central region and the edge region of the lens array 130 according to the present disclosure.

[0068] Reference Figures 8A to 8C Multiple unit masks 161 can be formed to include a light-transmitting region 163, which has a size that gradually increases as the optical axis passes through a central portion further away from the light source device 110.

[0069] Specifically, light incident on the first lens assembly 140 through the collimator 113 can have the highest luminous intensity at the central portion of the first lens assembly 140. Furthermore, as the size of the light-transmitting region 163 of the unit mask 161 increases, the brightness of the beam pattern can increase. According to this disclosure, the unit mask 161 can be formed to include a light-transmitting region 163 having a size that increases from the central portion of the lens array 130 toward the edge of the lens array 130, thereby improving the uniformity of the light pattern illuminating the road surface 2.

[0070] In this configuration, the unit masks 161, which are adjacent to each other from the center portion of the lens array 130 toward the edge of the lens array 130, can be formed to include light-transmitting regions 163 with different sizes within a specific dimension (e.g., about 1 mm). Therefore, since the amount of light does not change drastically between the patterned regions corresponding to the adjacent unit masks 161, pattern discontinuities caused by changes in the amount of light can be prevented in advance.

[0071] Furthermore, in the beam pattern, the direction away from the headlight 100 is defined as the longer distance direction, and the direction opposite to the longer distance direction is defined as the shorter distance direction.

[0072] In this case, the shielding area 162 may include: a longer distance edge 162b, which is configured to contact the end of the light-transmitting area 163 and form an end line in the longer distance direction of the beam pattern; and a shorter distance edge 162a, which is configured to face the longer distance edge 162b and form an end line in the shorter distance direction of the beam pattern.

[0073] In addition, multiple unit masks 161 can be formed to include a light-transmitting region 163, the size of which gradually increases as the central portion, which is away from the light source device 110, passes through, by increasing the distance between the longer distance edge 162b and the shorter distance edge 162a.

[0074] Additionally, for example, the shorter edge 162a in each of the plurality of unit masks 161 may have equal width in the left and right directions.

[0075] Therefore, on each unit mask 161, the size of the light-transmitting area 163 can be adjusted by making the position and size of the shorter distance edge 162a consistent and changing the position and size of the longer distance edge 162b.

[0076] In this case, the ratio of the longer edge 162b to the shorter edge 162a in the shielding area 162 can be greater than the ratio of the end line set in the longer direction to the end line set in the shorter direction. For example, when the beam pattern formed on the road surface 2 has a rectangular shape, the width of the longer edge 162b in the left-right direction can be greater than the width of the shorter edge 162a facing the longer edge 162b in the left-right direction. In other words, when the beam pattern has a rectangular shape, the light-transmitting area 163 can be formed into a trapezoidal shape.

[0077] As described above, according to the first embodiment of this disclosure, the uniformity of light intensity incident on the entire area of ​​the first lens device can be improved in a vehicle lamp. Therefore, the uniformity of the beam pattern formed on the road surface can be improved by using a lens array.

[0078] According to embodiments of this disclosure, the loss of light intensity is minimized. Therefore, the uniformity of the beam pattern formed on the road surface can be increased without the use of an additional light source.

[0079] Second Implementation Method

[0080] Figures 9 to 14 A second embodiment of this disclosure is illustrated. Figure 9 The diagram schematically illustrates a vehicle headlight according to a second embodiment of the present disclosure. Figure 10 The diagram schematically illustrates a vehicle headlight according to a comparative example of the present disclosure. Figure 11 This is a side view illustrating a vehicle headlight according to a second embodiment of the present disclosure. Figure 12 This is a side view of a vehicle headlight, illustrating a modified example of the second embodiment of the present disclosure. Figure 13 This is a side view illustrating a vehicle headlight according to another variation of the second embodiment of the present disclosure. Figure 14 This is a side view illustrating a vehicle headlight according to another variation of the second embodiment of the present disclosure.

[0081] Reference Figures 9 to 14 According to the second embodiment of this disclosure, the vehicle lamp 200 includes a light source device 210 and a lens array 230. Additionally, according to the second embodiment of this disclosure, the vehicle lamp 200 may also include a shielding portion 260.

[0082] The light source device 210 is configured to generate and illuminate light. The lens array 230 is disposed in front of the light source device 210 so that the light incident from the light source device 210 onto the lens array 230 is output forward.

[0083] For example, the light source device 210 can be configured to illuminate the road surface 2. The light source device 210 may include a light source 211 and a collimator 213. For example, the light source 211 may be, but is not limited to, a light-emitting diode (hereinafter referred to as an LED). The collimator 213 can convert the light emitted from the light source 211 into light parallel to the optical axis and can allow the light to be incident into the first lens device 240.

[0084] The lens array 230 includes a first lens device 240 and a second lens device 250.

[0085] The first lens device 240 includes a plurality of first microlenses 241 for receiving light incident thereon from the light source device 210. The second lens device 250 includes a plurality of second microlenses 251 configured to output light incident from the first lens device 240.

[0086] For example, the first microlens 241 may include an incident surface protruding toward the light source device 210, and the incident surface of the first microlens 241 may form the entire incident surface of the first lens device 240. Alternatively, the second microlens 251 may include an output surface 254 protruding toward the road surface 2, and the output surface 254 of the second microlens 251 may form the entire output surface 254 of the second lens device 250. However, the shapes of the first microlens 241 and the second microlens 251 are not limited to the shapes described above.

[0087] For example, the first lens device 240 may further include a first light-transmitting body 243. The first light-transmitting body 243 has a surface facing the light source device 210, and a first microlens 241 is formed on this surface. The first light-transmitting body 243 may include a material for transmitting light.

[0088] For example, the second lens device 250 may further include a second light-transmitting body 253. A second microlens 251 is formed on a surface facing in a direction opposite to that facing the first light-transmitting body 243 to transmit light. Alternatively, the second light-transmitting body 253 may be configured to face the first light-transmitting body 243, while the shielding portion 260 is inserted between the first light-transmitting body 243 and the second light-transmitting body 253.

[0089] The first light-transmitting body 243 and the second light-transmitting body 253 can be used as the main body for integrally forming the first lens device 240 and the second lens device 250. However, this disclosure is not limited thereto. When the first lens device 240 and the second lens device 250 are not integrally formed, at least one of the first light-transmitting body 243 and the second light-transmitting body 253 can be omitted.

[0090] In addition, refer to Figure 9Assuming the optical axis of the light output from the light source device 210 and incident on the first lens device 240 is referred to as the first optical axis AX1, and the optical axis of the light output from the second lens device 250 is referred to as the second optical axis AX2, the lens array 230 is configured such that the second optical axis AX2 is tilted relative to the first optical axis AX1 toward the road surface 2. In this case, the first optical axis AX1, which is the optical axis of the light incident on the first lens device 240, can be the optical axis of the light output from the light source device 210.

[0091] In detail, the lens array 230 can be configured such that a first optical axis AX1, which serves as the optical axis for light incident toward the first lens device 240, is formed at an angle different from that of a second optical axis AX2, which serves as the optical axis for light output from the second lens device 250. For example, the first optical axis AX1 can extend parallel to the road surface 2 (i.e., in the longitudinal direction of the vehicle 1). The second optical axis AX2 extends from the second lens device 250 toward the road surface 2 such that the second optical axis AX2 is inclined relative to the first optical axis AX1.

[0092] Therefore, according to this disclosure, when light is shone through the vehicle headlight 200 and the light is tilted relative to the road surface 2, the entire portion of the light source device 210 and the lens array 230 is not mounted tilted towards the road surface 2; instead, only the second optical axis AX2 of the second lens device 250 is formed tilted, thereby forming a beam pattern on the road surface 2. In this case, since the size M1 of the lens array 230 is reduced, a smaller vehicle headlight 200 can be achieved.

[0093] Figure 10 The figures illustrate comparative examples of the present disclosure. For ease of explanation, the reference numerals in the comparative examples of the present disclosure are the same as those in the figures according to the present disclosure. Figure 9 The reference numerals are the same in the accompanying drawings. According to the comparative example, when the entire portion of the light source device 210 and lens array 230 is mounted at an angle towards the road surface 2, the dimension M2 of the lamp 200 (particularly the height of the lamp 200 in the vertical direction) increases. Therefore, the space occupied by the lamp 200 inside the vehicle 1 can be widened. Furthermore, as... Figure 9 As shown, according to the embodiments of this disclosure, since only the second optical axis AX2 of the second lens device 250 is formed at an angle, a smaller vehicle lamp 200 can be achieved. Therefore, the space occupied by the vehicle lamp 200 can be reduced.

[0094] In this case, the second optical axis AX2 of the second lens device 250 can be formed in various ways without limitation, such that the second optical axis AX2 is tilted relative to the first optical axis AX1.

[0095] For example, refer to Figure 11The lens array 230 is formed to be tilted relative to a plane perpendicular to the first optical axis AX1, such that the second optical axis AX2 forms a specific angle relative to the first optical axis AX1. In this case, the first microlens 241, the first light-transmitting body 243, the shielding part 260, the second light-transmitting body 253, and the second microlens 251 can all be placed to be tilted relative to the first optical axis AX1.

[0096] Therefore, the optical axis AX2 provided in the second lens device 250 can extend in a direction that is inclined relative to the first optical axis AX1.

[0097] However, in this case, as the lens array 230 is tilted, the incident light can have various incident angles throughout the entire area of ​​the first lens assembly 240. Specifically, the incident angles can differ between the upper and lower portions of the first lens assembly 240. Therefore, the amount of light and the resolution can vary throughout the entire area of ​​the lens array 230. Consequently, the second optical axis AX2 is tilted relative to the first optical axis AX1 while extending towards the road surface 2.

[0098] According to this disclosure, optical performance can be supplemented by changing the form of the shielding portion 260, the second light-transmitting body 253, and the second microlens 251.

[0099] For example, refer to Figure 2 The shielding part 260 can be inserted between the first lens device 240 and the second lens device 250 to shield a portion of the light incident from the first lens device 240 toward the second lens device 250, so that a specific beam pattern can be formed on the road surface 2.

[0100] Additionally, the shielding portion 260 may also include unit masks 261. Multiple unit masks 261 may be configured to correspond to multiple second microlenses 251 respectively, and may form mask patterns to form beam patterns.

[0101] Multiple unit masks 261 can be positioned facing the lower portion of the lens array 230 and away from the second microlens 251.

[0102] For example, the focal point of each second microlens 251 can be located on each unit mask 261. In addition, since multiple unit masks 261 are arranged, the focal point of the second microlens 151 can be extended toward the lower portion of the lens array 230.

[0103] Therefore, the focal length of the second microlens 151 increases as it faces the lower portion of the lens array 230. Thus, as the lens array 230 tilts, resolution differences between regions can be corrected.

[0104] In addition, the radii of curvature of the plurality of second microlenses 151 can be formed to gradually increase toward the lower portion of the lens array 230.

[0105] Therefore, the focal length of the second microlens 151 can be increased towards the lower portion of the lens array 230. Thus, as the lens array 230 is tilted, resolution differences between regions can be corrected.

[0106] In addition, refer to Figure 13 The incident surface 244 of the first light-transmitting body 243, which is the surface facing the light source device 210, can be formed perpendicular to the first optical axis AX1. In addition, the output surface 254 of the second light-transmitting body 253, which is the surface facing the direction opposite to that facing the light source device 210, can be formed to be inclined relative to the incident surface 244, so that the output surface 254 is closer to the incident surface 244 and faces the lower part of the lens array 230.

[0107] In addition, the shielding part 260 can be arranged parallel to the output surface 254.

[0108] In this configuration, the second light-transmitting element 253 and the assembly having the second light-transmitting element 253 have a trapezoidal shape with dimensions gradually decreasing downwards. Therefore, the second optical axis AX2 of the second microlens 251 can be tilted about the first optical axis AX1, while the lens array 230 remains tilted. In other words, since the first lens assembly 240 is not tilted relative to the first optical axis AX1, light loss caused by the difference in incident angles can be minimized.

[0109] In addition, the radius of curvature of the plurality of first microlenses 241 can be formed to gradually decrease downward.

[0110] In detail, such as Figure 13 As shown, according to the embodiment, the shielding portion 260 and the second microlens 251 are inclined relative to the first optical axis AX1. Therefore, the distance between the first microlens 241 and the shielding portion 260 can gradually decrease downwards. In other words, the difference in distance between the first microlens 241 and the shielding portion 260 varies throughout the entire portion of the lens array 230, resulting in differences in light intensity. Therefore, the radius of curvature of the first microlens 241 can be formed to gradually decrease downwards to correct for the difference in light intensity caused by the difference in distance between the first microlens 241 and the shielding portion 260.

[0111] In addition, refer to Figure 14 The shielding portion 260 can be positioned closer to the first microlens 241 than to the second microlens 251. For example, according to the illustrated embodiment, although the shielding portion 260 can be directly attached to the first microlens 241, the position of the shielding portion 260 is not limited thereto.

[0112] As described above, when the shielding portion 260 can be configured to be adjacent to or in close contact with the first microlens 241, the focal length of the second microlens 251 increases over the entire portion of the lens array 230 to correct the resolution.

[0113] In addition, according to Figure 14 In the embodiment shown, when the lens array 230 is observed, the plurality of first microlenses 241 may have a radius of curvature that gradually decreases as they move away from the central portion through which the first optical axis AX1 passes.

[0114] In detail, as light incident from the light source device 210 onto the first lens device 240 moves away from the central portion, light loss can occur. Therefore, differences in luminous intensity can arise between the beam patterns formed on the road surface 2. According to an embodiment of this disclosure, as the radii of curvature of the plurality of first microlenses 241 move away from the central portion, the radii of curvature of the first microlenses 241 gradually decrease. Therefore, in the outer region of the first lens device 240, the amount of light increases to correct for light loss. Thus, the uniformity of the beam pattern formed on the road surface 2 can be improved.

[0115] As described above, according to the second embodiment of this disclosure, even for lamps that illuminate the road surface and tilt the light relative to the road surface, the size of the lens array can be minimized. Therefore, smaller lamp sizes can be achieved.

[0116] Third Implementation Method

[0117] Figures 15 to 18D A third embodiment of this disclosure is illustrated. Figure 15 This is an exploded perspective view illustrating a vehicle headlight according to a third embodiment of the present disclosure. Figure 16 This illustrates a vehicle light according to a third embodiment of the present disclosure. Figure 15 Side view. Figure 17 This illustrates the formation of Figure 16 A diagram of the unit mask in the occlusion body. Figures 18A to 18D The image shows a pattern of light beams projected onto the road surface.

[0118] Reference Figures 15 to 18D According to the third embodiment of this disclosure, the vehicle lamp 300 includes a light source device 310 and a lens array 330. Additionally, according to the third embodiment of this disclosure, the vehicle lamp 300 may also include a shielding portion 360.

[0119] The light source device 310 is configured to generate and illuminate light. The lens array 330 is disposed in front of the light source device 310 so that light incident from the light source device 310 onto the lens array 330 is output forward.

[0120] For example, the light source device 310 can be configured to illuminate the road surface 2. The light source device 310 may include a light source 311 and a collimator 313. For example, the light source 311 may be, but is not limited to, a light-emitting diode (hereinafter referred to as an LED). The collimator 313 can convert the light emitted from the light source 311 into light parallel to the optical axis, and can allow the light to be incident on the first lens device 340.

[0121] The lens array 330 includes a first lens device 340 and a second lens device 350.

[0122] The first lens device 340 includes a plurality of first microlenses 341 for receiving light incident thereon from the light source device 310. The second lens device 350 includes a plurality of second microlenses 351 configured to output light incident from the first lens device 340.

[0123] For example, the first microlens 341 may include an incident surface protruding toward the light source device 310, and the incident surface of the first microlens 341 may form the entire incident surface of the first lens device 340. Alternatively, the second microlens 351 may include an output surface protruding toward the road surface 2, and the output surface of the second microlens 351 may form the entire output surface of the second lens device 350. However, the shapes of the first microlens 341 and the second microlens 351 are not limited to the shapes described above.

[0124] For example, the first lens device 340 may further include a first light-transmitting body 343. The first light-transmitting body 343 has a surface facing the light source device 310, and a first microlens 341 is formed on this surface. The first light-transmitting body 343 may include a material for transmitting light.

[0125] For example, the second lens device 350 may further include a second light-transmitting body 353. The second microlens 351 is formed on a surface facing in a direction opposite to that facing the first light-transmitting body 343 to transmit light. Alternatively, the second light-transmitting body 353 may be configured to face the first light-transmitting body 343, while the shielding portion 360 is inserted between the first light-transmitting body 343 and the second light-transmitting body 353.

[0126] The first light-transmitting body 343 and the second light-transmitting body 353 can be used as the main body for integrally forming the first lens device 340 and the second lens device 350. However, this disclosure is not limited thereto. When the first lens device 340 and the second lens device 350 are not integrally formed, at least one of the first light-transmitting body 343 and the second light-transmitting body 353 can be omitted.

[0127] Furthermore, the shielding part 360 can be inserted between the first lens device 340 and the second lens device 350 to shield a portion of the light incident from the first lens device 340 to the second lens device 350, so that a specific beam pattern can be formed on the road surface 2.

[0128] Specifically, the shielding portion 360 may include unit masks 361. Multiple unit masks 361 may be configured to correspond respectively to multiple second microlenses 351. Unit masks 161 may have mask patterns for forming beam patterns. In other words, unit masks 361 may be configured to correspond respectively to second microlenses 351 disposed on the output side of the lens array 330.

[0129] More specifically, the unit mask 361 may include a shielding region 362 configured to block light, and a light-transmitting region 363 configured to transmit light and having a shape corresponding to the mask pattern. The image of the beam pattern projected onto the road surface 2 may vary depending on the shape of the light-transmitting region 363 (i.e., the shape of the mask pattern). For example, the unit mask 361 may be configured as a plate, and a specific beam pattern may be formed as light is shielded in the shielding region 362.

[0130] Alternatively, the shielding part 360 can be configured to be movable to change the lamp image of the beam pattern formed on the road surface 2.

[0131] Specifically, a mask pattern for determining the beam pattern to be projected onto the road surface 2 is formed in the shielding body 360a of the shielding portion 360. Therefore, when light is shone from the headlight 300 onto the road surface 2, and when the shielding body 360a moves, the image of the beam pattern can change. Thus, the beam pattern can be changed into a dynamic image. Alternatively, since the shielding body 360a is set to be movable, the shielding portion 360 can be configured such that the beam pattern formed when the headlight 300 is turned on is different each time the headlight 300 is turned on.

[0132] Therefore, according to the third embodiment of this disclosure, the beam pattern formed on the road surface 2 is realized in the form of a dynamic image, thereby producing the effect of changing the attention of other drivers and improving visibility.

[0133] Furthermore, according to the third embodiment of this disclosure, the beam pattern is implemented in the form of a dynamic image, thereby allowing the other driver or the person around vehicle 1 to intuitively obtain information about the forward direction of vehicle 1 when notifying the other driver or the person around vehicle 1 about the forward direction of vehicle 1.

[0134] Furthermore, according to the first embodiment of this disclosure, the vehicle light 300 may also include a drive device 370. The drive device 370 can provide a driving force, making the shielding portion 360 movable.

[0135] In detail, the drive unit 370 may include a pair of rollers 371 and 373 and an actuator 375.

[0136] A pair of rollers 371 and 373 may be spaced apart from each other in the vertical direction, and a portion of their outer surfaces may be configured to be in close contact with the shield 360a.

[0137] In this case, a pair of rollers 371 and 373 can be arranged parallel to each other and can be respectively located at the upper and lower ends of the shield 360a. However, the arrangement of rollers 371 and 373 is not limited to this.

[0138] In detail, the shielding body 360a can be formed in the form of a plate with a relatively wide width and can include a soft material. Therefore, the upper and lower portions of the shielding body 360a can be hung on a pair of rollers 371 and 373. When the rollers 371 and 373 rotate, the shielding body 360a can be set to move. In this case, the unit mask 361 formed in the shielding body 360a moves, causing the image of the beam pattern to change.

[0139] Actuator 375 can be connected to the rotation shaft 372 of either of a pair of rollers 371 and 373 to rotate rollers 371 and 373. When rollers 371 and 373 rotate, shield 360a rotates together with rollers 371 and 373. For example, actuator 375 can be automatically driven by a control unit.

[0140] Furthermore, the drive unit 370 can be configured to change the rotational speed of rollers 371 and 373. Therefore, the moving speed of the shield 360a can be changed.

[0141] For example, the drive unit 370 can adjust the rate of change of the dynamic image of the beam pattern by adjusting the revolutions per minute of the actuator 375. Alternatively, the drive unit 370 can be stopped or rapidly driven at a specific speed or higher to achieve a constant static state.

[0142] Furthermore, for example, the mask pattern formed on each of the plurality of unit masks 361 may have the same image.

[0143] In detail, the light-transmitting areas 363 of the multiple unit masks 361 can be formed to have the same shape. Therefore, the focal points of all the second microlenses 351 can be set to pair with the unit masks 361 formed to have the same mask pattern image.

[0144] In this case, multiple second microlenses 351 can have the same curvature.

[0145] Furthermore, the focal point of the second microlens 351 can be set to be located on the shielding portion 360. Additionally, the shielding portion 360 can be configured such that when the actuator 375 is driven, the shielding pattern of the unit mask 361 located at the focal point of each second microlens 351 can always have the same shape at any given time.

[0146] Therefore, according to the third embodiment of this disclosure, the beam pattern transmitted through the second microlens 351 at any time can be realized to have the same image.

[0147] In addition, refer to Figure 15 and Figure 16 According to the illustrated embodiment, when observed at any point in time based on rollers 371 and 373, the shielding portion 360 may include a rear surface portion configured to face the first microlens 341 and a front surface portion configured to face the second microlens 351.

[0148] Additionally, the unit mask 361 located at the focal point of the second microlens 351 can be configured to be located on the front surface portion.

[0149] In the following text, reference will be made to the third embodiment of this disclosure. Figure 17 and Figures 18A to 18D Images depicting the changing beam pattern of the headlights 300. Figure 17 An example is shown of a unit mask 361 formed in a shielding body 360a, while Figures 18A to 18D An example is shown of a beam pattern projected onto the road surface 2 through a second microlens 351.

[0150] When a pair of rollers 371 and 373 rotate forward or backward via actuator 375, the unit mask 361 can move vertically while the shielding body 360a moves, such as... Figure 17 As shown (see directions B1 and B2).

[0151] Therefore, as Figures 18A to 18D As shown, the beam pattern projected onto the road surface 2 can change over time. For example, the beam pattern achieved over time by a second microlens 351 can be adjusted according to... Figure 18A , Figure 18B , Figure 18C and Figure 18D The order changes sequentially.

[0152] However, the shape of the mask pattern of the unit mask 361 according to this disclosure or the shape of the modified image is not limited to the embodiment shown.

[0153] Therefore, according to the third embodiment of this disclosure, the beam pattern formed on the road surface 2 is realized in the form of a dynamic image, thereby producing the effect of changing the attention of other drivers and improving visibility.

[0154] Furthermore, according to the third embodiment of this disclosure, the beam pattern is implemented in the form of a dynamic image, thereby allowing the other driver or people around the vehicle to visually obtain information about the vehicle's forward direction when informing the other driver or people around the vehicle about the vehicle's forward direction.

[0155] Fourth Implementation Method

[0156] Figures 19 to 28D The fourth embodiment of this disclosure is illustrated. Figure 19 This diagram illustrates a vehicle headlight installed in a vehicle according to a fourth embodiment of the present disclosure. Figure 20 This is a perspective view illustrating a vehicle headlight according to the fourth embodiment of the present disclosure. Figure 21 This is a cross-sectional view illustrating a vehicle lamp according to the fourth embodiment of the present disclosure. Figure 22A A portion of the first partition region of a lens array according to a fourth embodiment of the present disclosure is illustrated. Figure 22B A portion of the fourth partition region of a lens array according to a fourth embodiment of the present disclosure is illustrated. Figure 23 This is a cross-sectional view of a vehicle lamp according to a modified example of the fourth embodiment of the present disclosure. Figure 24A This is an enlarged cross-sectional view illustrating the first partition region of a lens array according to a fourth embodiment of the present disclosure. Figure 24B This is an enlarged cross-sectional view illustrating the second partition region of a lens array according to the fourth embodiment of the present disclosure. Figure 24C This is an enlarged cross-sectional view illustrating the fourth partition region of the lens array according to the fourth embodiment of the present disclosure. Figure 25 This is a cross-sectional view of a vehicle lamp according to another variation of the fourth embodiment of the present disclosure. Figure 26 This is a perspective view illustrating a vehicle headlight according to another variation of the fourth embodiment of the present disclosure. Figure 27 This is an example Figure 26 A cross-sectional view of the car headlights. Figures 28A to 28D This is a diagram illustrating the operation of a vehicle headlight according to another variation of the fourth embodiment of this disclosure.

[0157] Reference Figures 19 to 28D According to the fourth embodiment of this disclosure, the vehicle lamp 400 includes a light source device 410 and a lens array 430. Additionally, according to the fourth embodiment of this disclosure, the vehicle lamp 400 may also include a shielding portion 460.

[0158] The light source device 410 is configured to generate and illuminate light. The lens array 430 is disposed in front of the light source device 410 to output light incident from the light source device 410 onto the lens array 430.

[0159] For example, the light source device 410 can be configured to illuminate the road surface 2. The light source device 410 may include a light source 411 and a collimator 413. For example, the light source 411 may be, but is not limited to, a light-emitting diode (hereinafter referred to as an LED). The collimator 413 can convert the light emitted from the light source 411 into light parallel to the optical axis AX1, and can allow the light to be incident into the first lens device 440.

[0160] The lens array 430 includes a first lens device 440 and a second lens device 450.

[0161] The first lens device 440 includes a plurality of first microlenses 441 for receiving light incident thereon from the light source device 410. The second lens device 450 includes a plurality of second microlenses 451 configured to output light incident from the first lens device 440.

[0162] For example, the first microlens 441 may include an incident surface protruding toward the light source device 410, and the incident surface of the first microlens 441 may form the entire incident surface of the first lens device 440. Alternatively, the second microlens 451 may include an output surface protruding toward the road surface 2, and the output surface of the second microlens 451 may form the entire output surface of the second lens device 450. However, the shapes of the first microlens 441 and the second microlens 451 are not limited to the shapes described above.

[0163] For example, the first lens device 440 may further include a first light-transmitting body 443. The first light-transmitting body 443 has a surface facing the light source device 410, and a first microlens 441 is formed on this surface. The first light-transmitting body 443 may include a material for transmitting light.

[0164] For example, the second lens device 450 may further include a second light-transmitting body 453. The second microlens 451 is formed on a surface facing in the opposite direction to the direction facing the first light-transmitting body 443 to transmit light. Alternatively, the second light-transmitting body 453 may be configured to face the first light-transmitting body 443, while the shielding portion 460 is inserted between the first light-transmitting body 443 and the second light-transmitting body 453.

[0165] The first light-transmitting body 443 and the second light-transmitting body 453 can be used as the main body for integrally forming the first lens device 440 and the second lens device 450. However, this disclosure is not limited thereto. When the first lens device 440 and the second lens device 450 are not integrally formed, at least one of the first light-transmitting body 443 and the second light-transmitting body 453 can be omitted.

[0166] Furthermore, the beam pattern P is divided into multiple pattern regions P1, P2, P3 and P4 according to the distance from the headlight 400, and the lens array 430 is divided into multiple partition regions D1, D2, D3 and D4 corresponding to the multiple pattern regions respectively.

[0167] Furthermore, as the patterned area is located at a greater distance from the headlight 400, the focal length of the second microlens 451, which is located in the partition area corresponding to the patterned area, can be increased.

[0168] Furthermore, as the patterned area is located at a greater distance from the headlight 400, the curvature of the second microlens 451, which is located in the partition area corresponding to the patterned area, can be reduced.

[0169] In detail, assuming that the direction away from the headlight 400 can be a longer distance direction, and the direction opposite to the longer distance direction is a shorter distance direction, when viewed along the beam pattern P, when the pattern region among the multiple pattern regions of the beam pattern P is located at a longer distance in the longer distance direction, the curvature of the second microlens 451 in the partition region corresponding to that pattern region can be reduced.

[0170] Furthermore, as the patterned area is located at a longer distance from the headlight 400, the thickness of the second microlens 451 disposed in the partition region corresponding to the patterned area can be increased. In other words, when the patterned area among the multiple patterned areas of the beam pattern P is located at a longer distance in the longer distance direction, the thickness of the second microlens 451 in the partition region corresponding to the patterned area can be increased.

[0171] In this case, for example, the first microlens 441 and the second microlens 451 disposed in the same partition region can be formed to have equal widths in the vertical direction, wherein the widths are within the range of manufacturing tolerances. However, the widths of the first microlens 441 and the second microlens 451 are not limited to this.

[0172] As the curvature of the second microlens 451 decreases, its focal length can be increased. Furthermore, as the thickness of the second microlens 451 increases, its focal length can also be increased. With an increased focal length, the luminous intensity increases, and the field of view (FOV) decreases.

[0173] As described above, according to this disclosure, the design is optimized to increase the focal length for a patterned area located at a longer distance of 400 mm from the headlight. Therefore, the luminous intensity of the patterned area located at a longer distance in the longer-distance direction can be increased. In other words, according to this disclosure, an optical system with optimal azimuth and optimal luminous intensity is achieved by designing separately for each segmented area.

[0174] Therefore, according to this disclosure, the light uniformity of the beam pattern P illuminating the road surface 2 can be improved.

[0175] For example, refer to Figures 19 to 22BAccording to the fourth embodiment of this disclosure, multiple partitioned regions can be placed in a quadrant plate obtained by dividing the lens array 430 with respect to the optical axis AX1 of the light source device 410.

[0176] In addition, multiple dividing areas D1, D2, D3, and D4 can be set to start from dividing area D1, which corresponds to the pattern area at the shortest distance from the headlight 400, and form a pattern area at a longer distance from the headlight 100 in a counterclockwise direction.

[0177] Specifically, the lens array 430 may include a first dividing region D1, a second dividing region D2, a third dividing region D3, and a fourth dividing region D4 arranged counterclockwise. In this case, the first dividing region D1 may be a dividing region corresponding to the first pattern region P1 at the shortest distance from the headlight 400. Alternatively, for example, the first dividing region D1 to the fourth dividing region D4 may be formed to have the same size.

[0178] The beam pattern P may include a first pattern area P1 corresponding to the first dividing area D1, a second pattern area P2 corresponding to the second dividing area D2, a third pattern area P3 corresponding to the third dividing area D3, and a fourth pattern area P4. The distance from the headlight 400 can increase from the first pattern area P1 toward the fourth pattern area P4.

[0179] When from Figure 21 When viewed from the side, the first dividing region D1 of the lens array 430 is placed in the lower part of the lens array 430, while the fourth dividing region D4 is placed in the upper part of the lens array 430. Figure 22A A portion of the first partition region D1 of the lens array 430 according to the fourth embodiment of the present disclosure is illustrated. Figure 22B A portion of the fourth partition region D4 of the lens array 430 according to the fourth embodiment of the present disclosure is illustrated.

[0180] Reference Figures 21 to 22B From the first dividing region D1 to the fourth dividing region D4, the second microlens 451 can have a reduced curvature and an increased focal length, and the first pattern region P1 to the fourth pattern region P4 have uniform brightness.

[0181] In addition, refer to Figures 23 to 24C As the patterned area is located at a greater distance from the headlight 400, the curvature of the first microlens 441, which is located in the corresponding dividing area of ​​the patterned area, can be increased.

[0182] When the curvature of the first microlens 441 increases, the amount of light incident through the first microlens 441 can increase. Therefore, as the amount of light in the partitioned region corresponding to the pattern region placed at a longer distance in the longer distance direction increases, the brightness of the pattern region placed at a longer distance in the longer distance direction can increase.

[0183] However, the curvature of the first microlens 441 in each segmented region is not limited to this. According to Figure 25 In the illustrated embodiment, the curvature of the first microlens 441 can be equal in the separated regions. For example, the first microlens 441 can have equal curvature when designed based on the thickness or curvature of the second microlens 451 to sufficiently improve light uniformity.

[0184] In addition, refer to Figures 23 to 25 Assuming the optical axis of the light output from the light source device 410 and incident on the first lens device 440 is called the first optical axis AX1, and the optical axis of the light output from the second lens device 450 is called the second optical axis AX2, the lens array 430 is formed such that the second optical axis AX2 is tilted relative to the first optical axis AX1 to extend toward the road surface 2.

[0185] In detail, in the lens array 430, the first optical axis A1, which is the optical axis of the light incident on the first lens device 440, and the second optical axis AX2, which is the optical axis of the light output from the second lens device 450, can be formed at different angles. For example, the first optical axis AX1 can extend parallel to the road surface 2 (i.e., in the longitudinal direction of the vehicle 1). The second optical axis AX2 extends from the second lens device 450 toward the road surface 2, such that the second optical axis AX2 is tilted relative to the first optical axis AX1.

[0186] Therefore, according to this disclosure, when light is irradiated by the vehicle headlight 400 and the light is tilted relative to the road surface 2, neither the light source device 410 nor the lens array 430 is mounted tilted towards the road surface 2. Instead, only the second optical axis AX2 of the second lens device 450 is formed tilted, thereby forming a beam pattern P on the road surface 2. In this case, compared to the case where both the light source device 410 and the lens array 430 are mounted tilted towards the road surface 2, the height of the lens array 430 in the vertical direction can be reduced. Therefore, a smaller vehicle headlight 400 can be achieved.

[0187] Figure 24A The first dividing region D1 is illustrated. Figure 24B The second dividing region D2 is illustrated, and Figure 24C The fourth dividing region, D4, is illustrated. For example... Figures 24A to 24C As shown, as the patterned area is located at a greater distance from the headlights by 400, the size of the acute angle in the angle formed between the first optical axis AX1 and the second optical axis AX2 in the partitioned area corresponding to the patterned area can be reduced.

[0188] Specifically, as the patterned region is located at a longer distance in the longer distance direction, the slope of the second optical axis AX2 relative to the first optical axis AX1 can decrease in the corresponding partition region. In other words, as the patterned region is located at a longer distance in the longer distance direction, the first optical axis AX1 and the second optical axis AX2 gradually become parallel to each other in the corresponding partition region.

[0189] In this case, various methods can be used without limitation to form the second optical axis AX2 of the second lens device 450, such that the second optical axis AX2 is tilted relative to the first optical axis AX1.

[0190] For example, the second lens device 450 may further include a second light-transmitting body 453. The second light-transmitting body 453 may include a second microlens 451 formed on a surface facing a direction opposite to that facing the light source device 410. In addition, the second microlens 451 may be disposed in the second light-transmitting body 453 such that the thickness direction of the second microlens 451 is inclined relative to the direction of the first optical axis AX1.

[0191] Therefore, the second optical axis AX2 provided in the second lens device 450 can extend in a direction inclined relative to the first optical axis AX1.

[0192] In addition, refer to Figures 26 to 28D According to the fourth embodiment of this disclosure, the vehicle light 400 may further include a drive shielding unit 470.

[0193] The drive masking unit 470 may include a rotating masking member 471. The rotating masking member 471 may be inserted between the light source device 410 and the lens array 430. In addition, an opening 472 is formed through the rotating masking member 471, such that the opening 472 has a size corresponding to the size of any one of the plurality of partitioned regions.

[0194] Specifically, the rotating shielding member 471 can be formed in a disk shape perpendicular to the optical axis of the light source device 410. Additionally, the driving shielding unit 470 may include a drive motor 475 providing driving force, and a transmission gear 473 connected to the drive motor 475 and meshing with a gear formed at the edge of the rotating shielding member 471. Furthermore, the driving shielding unit 470 may also include a drive frame 477 for mounting the drive motor 475.

[0195] When the drive motor 475 is driven, the transmission gear 473 connected to the drive shaft 476 can rotate. In this case, the rotating shield 471, which meshes with the transmission gear 473, can rotate. Light incident from the light source device 410 can be projected forward through the opening 472 of the rotating shield 471, and light can be blocked in the area other than the opening 472. As the rotating shield 471 rotates, the position of the opening 472 can change. Therefore, the area in the lens array 230 where light from the light source device 410 is incident can be changed.

[0196] As described above, the drive masking unit 470 can be configured to change the lamp image of the beam pattern P by changing the position of the opening 472 as the rotating masking member 471 rotates.

[0197] For example, the drive shielding unit 470 can rotate the rotating shielding member 471 so that the opening 472 corresponds sequentially to the first dividing region D1 to the fourth dividing region D4. (See...) Figures 28A to 28D ).

[0198] For example, the drive motor 475 can adjust the rotation speed of the rotating masking member 471, and can make the rotating masking member 471 rotate intermittently or continuously. For example, when the rotating masking member 471 rotates intermittently, the first pattern area P1 to the fourth pattern area P4 can be realized sequentially. In addition, when the rotating masking member 471 rotates continuously, the beam pattern P can realize a dynamic image. When the rotating masking member 471 rotates rapidly at a specific speed or faster, all of the first pattern area P1 to the fourth pattern area P4 can be realized simultaneously to realize a static image.

[0199] According to the fourth embodiment of this disclosure, the vehicle lamp can be designed to have an increased focal length as the patterned area is located at a longer distance from the vehicle lamp. Therefore, the luminous intensity of the patterned area formed at a longer distance in the longer-distance direction can be increased.

[0200] In other words, according to the fourth embodiment of this disclosure, a lens array is designed for each segmented region, thereby achieving an optical system with optimal azimuth angle and optimal luminous intensity. Therefore, according to this disclosure, the light uniformity of the beam pattern illuminating the road surface can be improved.

[0201] According to this disclosure, the headlight can be designed to have a gradually increasing focal length as the patterned area is located further away from the headlight, thereby increasing the luminous intensity formed at a longer distance in the longer distance direction.

[0202] According to embodiments of this disclosure, a lens array is designed for each segmented region, thereby achieving an optical system with optimal azimuth angle and optimal luminous intensity.

[0203] Therefore, according to this disclosure, the light uniformity of the beam pattern illuminating the road surface can be improved.

[0204] In the foregoing, although the present disclosure has been described with reference to exemplary embodiments and accompanying drawings, the present disclosure is not limited thereto, but can be modified and varied by those skilled in the art without departing from the spirit and scope of the present disclosure as claimed in the appended claims.

[0205] Cross-reference to related applications

[0206] This application claims priority to Korean Patent Application No. 10-2022-0055214, filed with the Korean Intellectual Property Office on May 4, 2022, the entire contents of which are incorporated herein by reference.

Claims

1. A lamp for a vehicle, the lamp for a vehicle comprising: A light source device configured to generate and output light; as well as A lens array, which is positioned in front of the light source device. The lens array includes: A first lens assembly, comprising a plurality of first microlenses, for receiving light from the light source assembly; and The second lens device includes a plurality of second microlenses configured to direct light from the first lens device onto the road surface to form a specific beam pattern. The beam pattern is divided into multiple pattern regions based on its distance from the lamp, and the lens array is divided into multiple partitioned regions corresponding to the multiple pattern regions. Furthermore, the focal length of the second microlens located in the partitioned regions corresponding to the pattern regions increases as the pattern regions are located at greater distances from the lamp. The lens array is configured such that the second optical axis is tilted relative to the first optical axis, extending towards the road surface. The first optical axis is the optical axis of light emitted from the light source device and incident on the first lens device, and the second optical axis is the optical axis of light emitted from the second lens device. As the patterned area is located at a greater distance from the lamp used on the vehicle, the size of the acute angle in the angle formed between the first optical axis and the second optical axis in the partitioned area corresponding to the patterned area decreases.

2. The vehicle lamp according to claim 1, further comprising: A shielding portion is inserted between the first lens assembly and the second lens assembly to shield a portion of the light from the first lens assembly to the second lens assembly, thereby forming a specific beam pattern on the road surface.

3. The light for a vehicle according to claim 2, wherein, The shielding part includes: Multiple unit masks are configured to correspond to the multiple second microlenses respectively, and have mask patterns for forming the beam pattern. The unit mask includes: A shaded area, which is configured to block light; and A light-transmitting area, which is configured to transmit light and has a shape corresponding to the mask pattern.

4. The light for a vehicle according to claim 1, wherein, The curvature of the second microlens decreases as the patterned area is located at a greater distance from the lamp.

5. The lamp for a vehicle according to claim 1, wherein, The thickness of the second microlens increases as the patterned area is located at a greater distance from the lamp.

6. The lamp for a vehicle according to claim 1, wherein, The first microlens and the second microlens, disposed in the same partition region, are formed to have the same width in the vertical direction, and The width is within the processing error range.

7. The lamp for a vehicle according to claim 1, wherein, The curvature of the first microlens increases as the patterned area is located at a greater distance from the lamp.

8. The lamp for a vehicle according to claim 1, wherein, The second lens device further includes: The second light-transmitting body includes a second microlens formed on a surface facing a direction opposite to that facing the light source device, and the second light-transmitting body is configured to transmit light. The second microlens is disposed in the second light-transmitting body such that the thickness direction of the second microlens is inclined relative to the direction of the first optical axis.

9. The lamp for a vehicle according to claim 1, wherein, The plurality of partitioned regions are placed in a quadrant plate obtained by dividing the lens array with respect to the optical axis of the light source device. The plurality of dividing regions are configured to start from the dividing region corresponding to the pattern region located at the closest distance to the lamp used in the vehicle, and form pattern regions at a distance farther from the lamp in a counterclockwise direction.

10. The lamp for a vehicle according to claim 1, further comprising: The drive masking unit includes: A rotating shielding element is inserted between the light source device and the lens array, having an opening formed through the rotating shielding element with a size corresponding to one of the plurality of partition regions, and is configured to be rotatable.

11. The lamp for a vehicle according to claim 10, wherein, The rotating shielding member is formed in the shape of a disk perpendicular to the optical axis of the light source device. The driving masking unit includes: The drive motor provides driving force; and A transmission gear, which is connected to the drive shaft of the drive motor and meshes with a gear formed at the edge of the rotating shield, The driving masking unit is configured to change the lamp image of the beam pattern by changing the position of the opening as the rotating masking member rotates.

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