Patent ID: 12203627

BEST MODE

Mode for Invention

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments that may be easily carried out by the person of ordinary skill in the art. However, it should be understood that the configurations shown in the embodiments and drawings described in this specification are only preferred embodiments of the invention, and that there may be various equivalents and modifications that can replace them at the time of application. In the detailed description of the operating principle for the preferred embodiment of the invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the invention, and the meaning of each term should be interpreted based on the contents throughout the present specification. The same reference numerals are used for parts having similar functions and functions throughout the drawings. Hereinafter, the embodiments will be apparent through the description of the accompanying drawings and embodiments. In the description of the embodiments, each layer (film), region, pattern or structure is formed “on” or “under” of the substrate, each layer (film), region, pad or patterns. In the case described as, “on” and “under” include both “directly” or “indirectly” formed through another layer. In addition, the criteria for the top or bottom of each layer will be described based on the drawings.

First Embodiment

FIG.1is a plan view showing a lighting device according to a first embodiment of the invention,FIG.2is an example of a cross-sectional view on the A1-A1side of the lighting device ofFIG.1, andFIG.3is a view explaining a stereoscopic effect in the lighting device ofFIG.24is a view for explaining an example in which the size of a stereoscopic image is adjusted according to the interval between the lens plate and the lighting module in the lighting device ofFIG.3, andFIG.5is a perspective view showing an example of a lens plate in the lighting device according to the embodiment of the invention,FIG.6is a first modified example of the lighting module in the lighting device ofFIG.2,FIG.7is a second modified example of the lighting module in the lighting device ofFIG.2, andFIG.8is another example of the lens plate in the lighting device ofFIG.7,FIG.9is an example showing the path of light emitted by the lens plate ofFIG.8,FIG.10is a first modified example of the lens unit of the lens plate ofFIGS.8and9, and FIG. is a second modified example of the lens portion of the lens plate ofFIGS.8and9, andFIG.12is another example of the lens plate in the lighting device ofFIG.2.

Referring toFIGS.1to5, the lighting device101may include a lighting module100and a lens plate70. The lighting module100may irradiate a point light source of uniform intensity in one direction through the opening portion53disposed on the emission surface. One or more opening portions53may be disposed, and the number of stereoscopic images of the lighting device101may be determined by the number of opening portions53. The lens plate70may be disposed in a light emission direction of the lighting module100. The lens plate70emits the incident light as a stereoscopic image or stereoscopic lighting. The stereoscopic image or stereoscopic lighting may be implemented as a contrast of light and dark having a difference between the brightest region and the darkest region, or may give a stereoscopic effect in a three-dimensional form by using a depth of luminous intensity or a difference in luminous intensity. The lighting module100may include a substrate11, light sources21and22disposed on the substrate11, a resin layer31covering the light sources21and22, and a light blocking layer51having an opening portion53on the resin layer31. In the lighting module100, one or a plurality of first light transmitting layers41may be disposed between the light blocking layer51and the resin layer31. The first light transmitting layer41may be a layer having no impurities or a layer having at least one or both of a diffusing agent and a phosphor. The light passing through the first light transmitting layer41is implemented in the form of a surface light source having a uniform intensity, but after passing through the opening portion53, the light may emit in the form of a point light source having uniform intensity corresponding to the shape of the opening portion53. At least one opening portion53may be disposed on a region closest to at least one of the light sources21and22, or one or more opening portions53may be disposed between upper regions of the light sources21and22. The thickness of the lighting module100is a vertical distance from the lower surface of the substrate11to the surface from which light is emitted or the upper surface of the light blocking layer51, and may be 5 mm or less, for example, in the range of 2 mm to 5 mm or 2.5 mm to 3 mm. The lighting module100is provided in a thin thickness, so that it may be applied in a flexible structure, or may be applied to a lamp housing or bracket having various curves or curved surfaces. The thickness of the lighting module100may be 200% or less, for example, in a range of 150% to 200% of the thickness of the resin layer31. When the thickness of the lighting module100is thinner than the above range, the light diffusion space is reduced to generate a hot spot. When the thickness is larger than the thickness range, spatial installation restrictions and design freedom may be reduced due to the module thickness. In the embodiment of the invention, the thickness of the lighting module100is provided to be 5 mm or less, so that a curved structure is possible, thereby reducing design freedom and spatial restrictions. The lighting module100may be applied to various modules or lamp devices that require stereoscopic lighting or stereoscopic effect, for example, a vehicle lamp, a home lighting device, and an industrial lighting device. For example, in the case of a lighting module applied to a vehicle lamp, it may be applied to a head lamp, a side lamp, a side mirror lamp, a fog lamp, a tail lamp, a turn signal lamp, a backup lamp, a stop lamp, daytime running right, vehicle interior lighting, door scarf, rear combination lamp, etc.

<Substrate11>

The substrate11may include a printed circuit board (PCB) having wiring. The substrate11may include, for example, a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a non-flexible PCB, a ceramic PCB, or an FR-4 substrate. The substrate11includes a wiring layer (not shown) thereon, and the wiring layer may be electrically connected to the light sources21and22. When a plurality of light sources21and22are arranged on the substrate11, the plurality of light sources21and22may be connected in series, parallel, or series-parallel by the wiring layer. The substrate11may function as a base member or a support member positioned under the light sources21and22and the resin layer31. The length of the first direction Y and the length of the second direction X of the substrate11may be the same or different from each other, for example, the length of the first direction Y may be more than the length of the second direction X. The first direction Y and the second direction X may be directions orthogonal to each other. The thickness of the substrate11may be 0.5 mm or less, for example, in the range of 0.3 mm to 0.5 mm. Since the thickness of the substrate11is provided to be thin, the thickness of the lighting module may not be increased. In the lighting module100, the plurality of light sources21and22may be disposed to face at least one side of the side surfaces of the substrate11, two sides opposite to each other, different sides, or all sides of the substrate11. The substrate11may include a connector in a portion to supply power to the light sources21and22. A region in the substrate11in which the connector is disposed is a region in which the resin layer31is not formed, and may be a partial region of the substrate11. When the connector is disposed on the bottom of the substrate11, the region may be removed. The top view shape of the substrate11may be a rectangle, a square, or other polygonal shapes, and may be a bar shape having a curved shape. The substrate11may include a member having a protective layer or a reflective layer thereon. The protective layer or the reflective layer may include a member having a solder resist material, and the solder resist material is a white material and may reflect incident light.

<Reflective Layer15>

The reflective layer15may be attached to the upper surface of the substrate11or may be disposed between the substrate11and the resin layer31. An adhesive layer, for example, a material such as UV adhesive, silicone, or epoxy, may be formed between the reflective layer15and the substrate11. The reflective layer15may be provided as a film made of any one of a resin material, transparent PET, white polyethylene terephthalate (PET), and an Ag sheet. A plurality of reflective dots may be disposed on the reflective layer15to reflect incident light. The plurality of reflective dots may include ink, for example, may be printed with a material including any one of TiO2, CaCO3, BaSO4, Al2O3, Silicon, and PS. In addition, a density of the plurality of reflective dots may be arranged such that a distance between the plurality of reflective dots decreases or a cross-sectional area increases as the distance from the light sources21and22increases. Here, the reflective layer15has an open region, and the light sources21and22may be disposed through the open region. The reflective layer15may be formed on the entire upper surface of the substrate11, or may be disposed on a single region or a plurality of regions having a predetermined shape. As another example, a layer having a phosphor may be disposed in the region of the reflective layer15. That is, a phosphor layer may be disposed between the upper surface of the substrate11and the resin layer31. The phosphor layer disposed under the resin layer31provides wavelength-converted light in the direction of the emission surface.

<Resin Layer31>

The resin layer31may be disposed on the substrate11. The light sources21and22may be covered or sealed with the resin layer31on the substrate11. The light sources21and22may be adjacent to at least one side or both sides of the side surfaces Sa and Sb of the resin layer31. For example, the first light source21may be disposed adjacent to the first side surface Sa of the resin layer31, and the second light source22may be disposed adjacent to the second side surface Sb opposite to the first side surface Sa. At least one or two or more of the side surfaces of the resin layer31may be straight or curved, and may be on the same vertical plane as the side surface of the substrate11. The resin layer31may emit light through the upper surface Sc and/or the side surface. The upper surface of the resin layer31may include a flat horizontal surface, a concave surface, or a convex surface. The resin layer31may be adhered to the upper surface of the substrate11, or may be adhered to the substrate11and the reflective layer15. The resin layer31may be formed of a transparent material. The resin layer31may include a transparent resin material such as silicone or epoxy or a plastic material. The resin layer31may be made of a transparent resin material, for example, a resin material such as UV (ultra violet) resin, epoxy, or silicone. The UV resin may be, for example, a resin (oligomer type) having a urethane acrylate oligomer as a main material as a main material. Since the resin layer31using the above-described composition is formed of a resin such as silicone, epoxy or UV resin instead of a light guide plate, the refractive index and thickness may be easily adjusted, and adhesive properties, reliability, and mass production speed may be satisfied. As another example, a diffusing agent may be added to the resin layer31to diffuse light. The diffusing agent may include at least one of a poly methyl meth acrylate (PMMA) series, TiO2, SiO2, Al2O3, and silicon series.

<Light Source21and22>

The plurality of light sources21and22may include a plurality of first light sources21and/or a plurality of second light sources22. The first light source21may be adjacent to or face the first side surface Sa of the resin layer31, and the second light source22may be adjacent to or face the second side surface Sb of the resin layer31. The first light sources21may be arranged in at least one column on the first region of the substrate11, and the second light sources22may be arranged in at least one column on the second region of the substrate11. Any one of the first or second light sources21and22may be arranged in two or more rows. As shown inFIGS.1and13, when the first and second light sources21and22are arranged in an N×M matrix on the substrate11, the N may be one row or two or more rows, and the M may be one column or two or more columns. The light sources21and22may emit light in at least one direction. For example, the first light source21may emit light in the direction of the second light source22or the second side surface Sb. The second light source22may emit light in the direction of the first light source21or the first side surface Sa. Each of the light sources21and22may be implemented as a side view type package having an LED chip. As another example, each of the light sources21and22may be implemented as a top-view type package having an LED chip or an LED chip. For example, it may be implemented as a flip chip, a horizontal chip, or a vertical chip. The package may include a body or a reflective body disposed on the periphery of the LED chip, and may adjust the directional angle of the LED chip and protect the LED chip. The light sources21and22in the form of a package may emit light in one direction or one surface. The LED chip may include at least one or both of a blue LED chip, a red LED chip, and a green LED chip. Each of the packages may have one LED chip or different LED chips, and at least one or both of the first and second light sources21and22may be emitted at least one or two or more of blue, green, red, or white. The first light source21may emit light through the first surface S1, and the second light source22may emit light through the second surface S2. The first surface S1may be a surface facing the second light source22, and the second surface S2may be a surface facing the first light source21. The first light source21and the second light source22may be disposed to face each other or to be displaced from each other. As another example, the light sources21and22may include organic light emitting diodes (OLEDs).

<First Light Transmitting Layer41>

The first light transmitting layer41may be disposed on the resin layer31. The first light transmitting layer41may be adhered to the upper surface of the resin layer31in the form of a film, or may be formed of a resin material. The first light transmitting layer41may be adhered to the resin layer31by self-adhesiveness without a separate adhesive. Accordingly, it is possible to reduce the process of separately attaching the adhesive, and it is possible to avoid using an adhesive that is harmful to the human body, thereby reducing process or material waste. The first light transmitting layer41may be removed. The first light transmitting layer41may diffuse the light emitted through the resin layer31. Since a specific color may not be mixed when the luminous intensity of light is high, the first light transmitting layer41may diffuse and mix the lights. The material of the first light transmitting layer41may be a diffusion material or a light guide material. The first light transmitting layer41may include at least one of a polyester (PET) film, a poly methyl methacrylate (PMMA) material, or a polycarbonate (PC) material. The first light transmitting layer41may be provided as a film made of a resin material such as silicone or epoxy. The first light transmitting layer41may include a single layer or multiple layers. The thickness of the first light transmitting layer41may be thinner than the thickness of the resin layer31. The thickness of the first light transmitting layer41may be 25 μm or more, and may be, for example, in the range of 25 to 250 μm or in the range of 100 to 250 μm. The first light transmitting layer41may provide incident light having the above thickness range as uniform surface lighting. The first light transmitting layer41may include at least one or two or more of a diffusion agent such as a bead, a phosphor, and an ink particle. The phosphor may include, for example, at least one of red, amber, yellow, green, and white phosphors. The ink particles may include at least one of metal ink, UV ink, and curing ink. The size of the ink particles may be smaller than the size of the phosphor. The surface color of the ink particles may be any one of green, red, yellow, and blue.

<Light Blocking Layer51>

The light blocking layer51may be disposed on the uppermost layer of the lighting module100. The light blocking layer51may be disposed closest to the lens plate70among the layers of the lighting module100. The light blocking layer51may include a metal or non-metal material. The light blocking layer51may include an absorbing material or a reflective material. The light blocking layer51may be a printed layer or a separately attached layer on the first light transmitting layer41. The light blocking layer51may absorb or reflect visible light, infrared light, or some ultraviolet light. For example, the light blocking layer51may absorb or reflect a wavelength in a range of 380 nm to 800 nm. For example, the light blocking layer51may be black ink or a black printed layer. The light blocking layer51may be an absorbing material having carbon or carbon nanotubes, a black resist material, or a black matrix material. As another example, the light blocking layer51may be a reflective layer, for example, may be formed of a layer having aluminum (Al) or silver (Ag), or an alloy layer having at least one of the above metals. The light blocking layer51may be a single layer or multiple layers. For example, in the case of a multi-layer, a first layer made of a black material and a second layer made of a reflective material may be included, and in this case, the first layer may be disposed on the second layer. The light blocking layer51may be implemented using a masking film. The thickness of the light blocking layer51may be 0.1 μm or more, for example, 0.1 to 5 μm. When the thickness of the light blocking layer51is greater than the above range, improvement in light blocking efficiency is insignificant, and when the thickness of the light blocking layer51is smaller than the above range, transmittance may be increased. The light blocking layer51may include one or a plurality of opening portions53. The opening portion53may vertically penetrate from the upper surface to the lower surface of the light blocking layer51. The top view shape of the opening portion53may be a polygonal shape such as a square, rectangular, triangular or pentagonal shape, a circular or elliptical shape, or an irregular shape. The length D1of the opening portion53in the first direction Y and the length D3of the second direction X may be the same as or different from each other. The plurality of opening portions53may be spaced apart from each other. A distance between adjacent opening portions53may be more spaced apart than lengths D1and D3in either direction of each opening portion53. That is, due to the distance between the opening portions53, interference between adjacent opening portions53may be minimized and a stereoscopic effect may be maximized. The plurality of opening portions53may be arranged at regular intervals in the first direction and/or the second direction, or may be arranged at different intervals from each other.

As shown inFIG.1, the opening portions53may have the same shape or different shapes. Also, at least one or two or more of the opening portions53may be disposed on a straight line through which the first and second light sources21and22pass for the luminous intensity of the light emitted from the light sources21and22. The opening portion53of the light blocking layer51may be an air region for linearity of light or may be formed of a resin material. The lengths D1and D3in either direction of the opening portion53may be smaller than the interval G1between the light blocking layer51and the lens plate70, that is, the minimum interval. That is, the interval G1>lengths D1and D3may be satisfied. The lengths D1and D3in one direction of the opening portion53may be at least 3 mm, for example, in the range of 3 mm to 10 mm, or in the range of 4 mm to 8 mm. When the lengths D1and D3of the opening portion53are larger or smaller than the range, the stereoscopic effect may be reduced. Here, at least one or all of the opening portions53may be disposed in a region that does not overlap the light sources21and22in a vertical direction or a light emission direction. In the light blocking layer51, the total area of the opening portions53may be 50% or less of the upper surface area of the resin layer31, for example, in the range of 1% to 50% or in the range of 1% to 25%. When the total area of the opening portions53is greater than the above range, the stereoscopic effect of the opening portions53may be reduced. The first light transmitting layer41and the light blocking layer51may be in close contact with the upper surface of the resin layer31or may be spaced apart from the upper surface of the resin layer31. The first light transmitting layer41and the light blocking layer51may be disposed in a region between the resin layer31and the lens plate70.

<Lens Plate70>

The lens plate70may include a light transmitting portion72and a plurality of convex portions71. The plurality of convex portions71may be disposed on one surface or the other surface of the light transmitting portion72. The plurality of convex portions71may be disposed on one surface on which light is incident toward the light transmitting portion72, or may be disposed on the other surface on which light is emitted from the light transmitting portion72. The convex portion71may include a lenticular lens shape or a semi-cylindrical micro lens shape. The light transmitting portion72may be a member supporting the plurality of convex portions71. The light transmitting portion72is provided in the form of a plate or a film, and emits incident light from the inside in an emission direction. As shown inFIG.5, the light transmitting portion72and the plurality of convex portions71may be integrally formed. As another example, the plurality of convex portions71may be attached to one surface or the other surface of the light transmitting portion72using a light-transmitting material. A material of the light transmitting portion72may be resin or glass, and the resin may include a thermoplastic polymer or a photocurable polymer. In addition, a material of the light transmitting portion72may include polycarbonate, polymethylmethacrylate, polystyrene, or polyethylene terephthalate. The material of the light transmitting portion72may be made of a UV-curing resin including an oligomer, and more specifically, a resin having a urethane acrylate oligomer as a main raw material. That is, a resin in which a urethane acrylate oligomer, which is a synthetic oligomer, and a polymer type, which is a polyacrylic, is mixed may be used. The convex portion71may be formed of a thermoplastic polymer or a photocurable polymer, or may be formed of the same material as the light transmitting portion72. The convex portion71may be formed through a photomask process on one surface or the other surface of the light transmitting portion72. The convex portion71may have no difference in refractive index from the transmissive portion72or may be less than or equal to 0.2, thereby minimizing light loss due to the refractive index difference. The thickness of the light transmitting portion72may be 0.1 mm or more, for example, in the range of 0.1 mm to 10 mm, or in the range of 0.1 mm to 0.25 mm. When the thickness of the light transmitting portion72is less than the above range, the stereoscopic effect may be reduced. When the thickness is thicker than the above range, the improvement of the stereoscopic effect is insignificant and the thickness of the lighting device may be increased. As shown inFIGS.2to5, the plurality of convex portions71are arranged in the first direction Y on the lower surface (or one surface) or the upper surface (or the other surface) of the light transmitting portion72, and may have a long length in the second direction X. The convex portions71may be arranged in the second direction X according to the stereoscopic image of the lighting device101and may have a long length in the first direction Y. The convex portion71may have a stripe or bar shape having a long length in the second direction X, a sinusoidal shape, or a sawtooth shape. The plurality of convex portions71may be arranged as a combination of lens portions or unit patterns disposed on one surface or the other surface of the light transmitting portion72. The convex portion71may have a hemispherical shape, a semi-elliptical shape, or a polygonal shape in a side cross-sectional shape in the second direction X. The convex portion71may be provided in a shape capable of refracting incident light, and may be a member capable of forming a stereoscopic effect. The lens plate70may be provided with an area equal to or larger than the upper surface area of the lighting module, for example, may be arranged to extended further in a direction (e.g., X direction) orthogonal to a direction (e.g., X direction) in which light is emitted from the light sources21and22(e.g., Y direction), or may be arranged to extend further in the region between the X direction and the Y direction, so that the length of the convex portions71may be provided longer than the length of the lighting module. The convex portion71may reflect and/or refract incident light and form a stereoscopic effect on an image by the light emitted through the other surface of the transmitting portion72. The lens plate70may extract a point light source of uniform intensity incident through the convex portion71as a stereoscopic image or stereoscopic lighting. Here, in the lens plate70, a surface (e.g., an upper surface or the other surface) opposite to the surface on which the convex portion71may be a flat surface. As shown inFIG.3, the width R2of the convex portion71is the maximum length in a direction (e.g., the first direction) orthogonal to the longitudinal direction of the convex portion71, and may be 5 μm or more, for example, in the range of 5 to 100 μm or in the range of 10 to 80 μm. As the width R2of the convex portion71is smaller, the sharpness of the stereoscopic image may be improved. The height R1of the convex portion71is a protruding height and may be smaller than the width R2. For example, the width R2may be 0.5 or less, for example, in the range of 0.1 to 0.48. When the height R1of the convex portion71is greater than the above range, the size of the unit pattern (i.e., the convex portion) increases, when it is smaller than the above range, a difference in sharpness of the stereoscopic effect may be reduced. The interval R3between the convex portions71may be 1 μm or more, for example, in the range of 1 to 100 μm or in the range of 1 to 10 μm. The width R2and the height R1of the convex portion71may be selected within the above range in consideration of a difference in sharpness of a stereoscopic image or stereoscopic surface lighting. As shown inFIG.3, the lower surface of the light blocking layer51or the upper surface Sc1of the first light transmitting layer41may emit surface lighting through the opening portion53. The light L1emitted through the opening portion53of the light blocking layer51may be emitted in the shape of a point light source of uniform intensity, and the light L2that is refracted and transmitted through the curved surface73of the convex portion71of the lens plate70forms a stereoscopic image in a direction perpendicular to the longitudinal direction of the convex portion71in the upper region Rz of the opening portion53. In this case, the center region Rc perpendicular to the opening portion53may have the highest luminous intensity, and both side regions Ra and Rb may have lower luminous intensity than the center region Rc. A stereoscopic image of the lighting device101may be realized by the difference in luminous intensity. As shown inFIG.4, in the stereoscopic image on the lens plate70, the regions Rc1and Rc2in which the stereoscopic image is formed may vary according to the interval G1, or the shape or size of the stereoscopic image may vary. The interval G1may be implemented as a first air layer55, and the first air layer55may be an empty region between two layers or a region where a bracket is coupled to an outer portion.

According to an embodiment of the invention, the lens plate70and the light blocking layer51may be spaced apart from each other by a predetermined interval. The interval G1may be a distance through which the light incident through the opening portion53of the light blocking layer51may be diffused, and may be a distance through which the size of a stereoscopic image may be adjusted. The interval G1may be 5 mm or more, for example, in the range of 5 mm to 50 mm or in the range of 5 mm to 20 mm. When the interval G1is smaller than the above range, the size of the stereoscopic image is small, so it may be difficult to implement the stereoscopic effect according to the difference in luminous intensity.

The lens plate70may be parallel to the upper surface of the light blocking layer51, inclined with respect to the first direction Y, inclined with respect to the second direction X, or inclined with respect to in first and second directions Y and X. Here, the inclination in the first direction Y may gradually narrow or widen the distance from one end of the lens plate70in the first direction Y to the other end of the light blocking layer51. The inclination in the second direction X may gradually narrow or widen the interval between the light blocking layer51and the lens plate70from one end of the lens plate70in the second direction X toward the other end of the lens plate70. Depending on the inclination angle or the inclination direction of the lens plate70, various stereoscopic effects may be given due to the difference between the luminous intensity and path of the light emitted through the lens plate70, for example, the stereoscopic image may include a curvature rather than a straight line. The lens plate70may be rotated based on an axis (e.g., Z direction) perpendicular to the center of the first direction Y of the resin layer31. When the lens plate70is rotated on the blocking layer51, a stereoscopic image or stereoscopic lighting may be provided in a rotated form according to the rotated angle. In this case, the sharpness of the stereoscopic image may be provided in a form that is gradually lowered. For example, (A)-(E) ofFIG.26shows an example in which the lens plate70is rotated on the light blocking layer51or the opening portion53, and the stereoscopic image Im-1may be seen with the lens plate70in a rotated form by 3 degrees to 6 degrees (A inFIG.26), 8 degrees to 12 degrees (B inFIG.26), 18 degrees to 22 degrees (C inFIG.26), 35 to 45 degrees (D inFIG.26), or 45 degrees to 55 degrees (E inFIG.26). The rotation angle of the lens plate70may be provided in the range of 1 degree to 180 degrees. In this case, the sharpness of the stereoscopic image may be lowered depending on the rotation angle, and may be displayed in a form that may interfere with each other. That is, there is an effect of providing various stereoscopic images or stereoscopic lighting according to the rotation angle of the lens plate70.

The inclination of the lens plate70in the second direction X may be defined as the tilt of the image. Since the convex portion71has a long length in the second direction X, it is possible to tilt the stereoscopic image or the stereoscopic lighting. As shown in (A)-(D) ofFIG.27, the stereoscopic image Im-2may be changed in a tilted form according to the inclination angle in the second direction X of the lens plate70. InFIG.27, (A) is a front image, and when the inclination angle gradually increases from (B) to (D), the stereoscopic image may be viewed in a tilted form at a gradually large angle. InFIG.27, (A) is a case with a tilt angle of 0 degrees, (B) is a case with a tilt angle of 13 to 18 degrees, (C) is a case with a tilt angle of 18 to 22 degrees, (D) is a case with a tilt angle of 30 degrees to 40 degrees. The tilt angle may be 15 degrees or more, for example, in the range of 15 to 40 degrees, and when it is larger or smaller than the range, the degree of distortion of the image may be excessive or insufficient. The invention may provide various stereoscopic images or stereoscopic lighting according to the tilt angle of the lens plate70. In addition, in each stereoscopic image Im-2, the region having the highest luminous intensity or the center region may be a region corresponding to the opening portion53. That is, there is an effect of providing various stereoscopic images or stereoscopic lighting according to the tilt angle of the lens plate70. Here, an example of tilting and rotating the lens plate70will be referred toFIG.28. As shown inFIGS.3and28, according to the tilt and rotation, the stereoscopic image Im-3may be viewed in various three-dimensional forms such as (A), (B) and (C), which are tilted and rotated. An example of a stereoscopic image of the lens plate70according to the interval G1between the light blocking layers51will be referred toFIG.29. As shown inFIGS.29(A)-(D) and3, it may be seen that the stereoscopic image Im-4may give a stereoscopic image effect without deterioration of sharpness when the interval G1of 5 mm or less (A inFIG.29) or 8 to 12 mm (B inFIG.29), 13 mm to 15 mm (C inFIG.29), 18 mm to 21 mm (D inFIG.29), and 12 mm or less. The direction in which the pattern such as the convex portion71is arranged and the stereoscopic image are arranged to be displaced in a direction perpendicular to each other, that is, at an angle of 90 degrees, and as the pattern such as the convex portion71rotates, the stereoscopic image may be rotated while maintaining an angle (i.e., 90 degrees). The lighting device101according to an embodiment of the invention may be viewed various stereoscopic images or stereoscopic lighting according to the interval between the lens plate70and the light blocking layer51, and the rotation and/or tilt angle of the lens plate70. Such stereoscopic lighting may be provided as a long image in a direction orthogonal to the longitudinal direction of the convex portion71centered on the opening portion53, and is the highest luminous intensity on the opening portion53and may be provided with a lower luminous intensity as the distance from the highest luminous intensity region increases. That is, the luminous intensity of the stereoscopic image may be gradually reduced based on the upper region of the opening portion53, or an image having a sense of depth may be provided.

FIG.6is a first modified example ofFIG.2. As shown inFIG.6, the light blocking layer51may be disposed on the upper surface of the resin layer31. The light blocking layer51may be attached to the upper surface of the resin layer31. In such a lighting device, since the first light transmitting layer41is removed and the light blocking layer51is disposed on the resin layer31, the thickness of the lighting device may be reduced. The opening portion53of the light blocking layer51may be an air region or may be filled with a resin material for linearity of light.

FIG.7is a second modified example ofFIG.2. As shown inFIG.7, a first light transmitting layer41and a second light transmitting layer45may be included between the light blocking layer51and the resin layer31. The first light transmitting layer41may be disposed on the resin layer31, and the second light transmitting layer45may be disposed between the first light transmitting layer41and the light blocking layer51. As another example, the first light transmitting layer41having a diffusing agent is disposed on the resin layer31, and the second light transmitting layer45having no impurity or having impurities may be disposed on the first light transmitting layer41. A phosphor and/or ink particles may be added to at least one of the first and second light transmitting layers41and45. A second air layer55A may be disposed between the first light transmitting layer41and the second light transmitting layer45. The second air layer55A may be a region filled with air or an empty region between the two layers, and a bracket for supporting the lighting module100may be coupled to an outer portion thereof. Since the second air layer55A is disposed on the resin layer31, a hot spot of light may be reduced, and a stereoscopic effect may be realized by a difference in depth of light due to a refracted angle or path.

As shown inFIGS.8and9, the convex portion71A of the lens plate70may be disposed on the surface from which light is emitted to the lens plate70, that is, the other surface or the upper surface. The convex portion71A may have a hemispherical shape, a semi-elliptical shape, or a polygonal shape. The convex portion71A may be formed integrally with the light transmitting portion72A or may be attached with a separate lens material. The lower surface of the lens plate70may be a flat surface, and the interval G1from the light blocking layer51to the lens plate70may be within the range disclosed above. The light emitted through the convex portion71A may be dispersed left/right with respect to the central axis by the refracted emission angle on the surface of the convex portion71A, thereby forming a stereoscopic image.

As shown inFIG.10, the plurality of convex portions71and71A of the lens plate70have hemispherical curved surfaces74(74A,74B, and74C), and are orthogonal to the arrangement direction of the convex portions71and71A. The angle R0between the direction Z and the tangent to the curved surfaces74A,74B, and74C may be 5 degrees or more, for example, in the range of 5 to 85 degrees. Reflection and refraction angles of incident light or emitted light may be adjusted by the angle R0. The width R2of the plurality of convex portions71and71A may be 5 μm or more, for example, in the range of 5 to 100 μm or in the range of 10 to 80 μm. The connection portion76between the convex portions71and71A is a part that connects the two convex portions71and71A, and the distance or interval R3is 1 μm or more, for example, 1 to 100 μm or 1 to 10 μm. The plurality of convex portions71and71A may be disposed below or above the light transmitting portions72and72A.

As shown inFIG.11, the convex portion71B of the lens plate70has polygonal angled surfaces75(75A,75B, and75C), and an inclination angles R01and R02between a direction Z perpendicular to the arrangement direction of the convex portions71B and an angled inclined surfaces S71may be provided in a range of 5 degrees or more, for example, 5 to 85 degrees. The angles R01and R02may be provided as a wider angle (R01<R02) as the distance from the central axis Z increases, and angles of reflection and refraction of incident light or emitted light may be adjusted. Here, the width R4of each center region S72of each convex portion71B is arranged to be 10 μm or less, so that a decrease in the incident efficiency of light may be prevented. The outer inclined surface S71of the center region S72may have a width equal to or greater than the width of the center region S72. An interior angle between the center region S72and the inclined surface S71may be less than 180 degrees, for example, an obtuse angle. A decrease in the efficiency of light incident or emitted by the center region S72and the inclined surface S71may be prevented. The width R2of the plurality of convex portions71B may be 5 μm or more, for example, in the range of 5 to 100 μm or in the range of 10 to 80 μm. The connection portion76between the convex portions71B is a part that connects the two convex portions71B, and the distance or interval R3may be 1 μm or more, for example, in the range of 1 to 100 μm or 1 to 10 μm. The plurality of convex portions71B may be disposed below or above the light transmitting portion72B.

Referring toFIG.12, the lens plate70is disposed on the lighting module100. The lens plate70may include a light transmitting portion72C and a convex portion71C. The convex portions71C are arranged in a prism pattern shape, that is, a triangular shape, and the inclination angle R03between the direction Z perpendicular to the arrangement direction of the convex portions71C and the inclined surface77is 5 degrees or more. For example, it may be provided in a range of 5 to 85 degrees. The angle of reflection and refraction of the incident light or the emitted light may be adjusted by the angle R03. The interval R5between the vertices of the convex portion71C may be 5 μm or more, for example, in the range of 5 to 100 μm or in the range of 10 to 80 μm. The plurality of convex portions71C may be disposed below or above the light transmitting portion72C.

FIG.23is a modified example ofFIG.6. In the lighting module, a reflective portion15A may be disposed between the resin layer31and the substrate11. Unlike the reflective portion15according to the first embodiment, the reflective portion15A according to the modified example may be disposed in a region overlapping the opening portion53of the light blocking layer51which is in a portion of the substrate11in the vertical direction. The reflective portion15A may be formed with a predetermined width D11on the emission surface S1of the light emitting device21, for example, horizontally and vertically in a range of 2 mm×2 mm to 15 mm×15 mm. Accordingly, the light emitted from the light emitting device21may directly travel through the opening portion53or may be reflected by the reflective portion15A and emitted through the opening portion53. This structure emits some light reflected by the reflective portion15A through the opening portion53, thereby eliminating direct hot spots by the light source21on the opening portion53, and the light efficiency for the stereoscopic image(s) may be improved and a degradation of light intensity may be prevented.

FIG.24is a modified example ofFIG.23. A plurality of reflective portions15A may be disposed on the substrate11, and a plurality of opening portions53may be arranged at predetermined interval G4in the light blocking layer51. The reflective portions15A and the opening portions53may be arranged in the same direction, for example, in a direction in which light is emitted. The predetermined interval G4may be provided to be wider than a width (a horizontal width) of each of the convex portions71A. Since the area of the upper surface of each reflective portion15A may be larger than the respective area of the opening portion53, the reflective portions15A may improve the efficiency of light entering through the opening portion53.

Second Embodiment

FIG.13is an example of a cross-sectional side view of a lighting device according to a second embodiment of the invention. The description of the second embodiment refers to the configuration disclosed above and may include the same configuration. Referring toFIG.13, in the lighting device, a lighting module100A and a lens plate70may be disposed on the lighting module100A. The lighting module100A may include a plurality of light sources25disposed on the substrate11. Each of the plurality of light sources25may be implemented as a top-view type package having an LED chip or an LED chip. For example, it may be implemented as a flip chip, a horizontal chip, or a vertical chip. The package may include a body or a reflective body disposed on the periphery of the LED chip, and may adjust the directional angle of the LED chip and protect the LED chip. The light source25in the form of a package may emit light in the upper surface direction or the side surface direction. The LED chip may include at least one or all of a blue LED chip, a red LED chip, and a green LED chip. Each of the packages may have one LED chip or different LED chips, and the plurality of light sources25may emit at least one or two or more of blue, green, red, and white. The resin layer31may cover or seal the plurality of light sources25. A reflective layer15is disposed between the resin layer31and the substrate11, and the light sources25may pass through the reflective layer15and be mounted on the substrate11. Here, when the flip chip is disposed on the substrate11, the flip chip emits light through an upper surface and four side surfaces S3, and the light may be reflected by the reflective layer15. A first light transmitting layer41is disposed on the resin layer31and a second light transmitting layer45is disposed on the first light transmitting layer41, and only one of the first light transmitting layer41or the second light transmitting layer45may be disposed. At least one of the first and second light transmitting layers41and45may include a phosphor and/or a diffusing agent, and ink particles. A light blocking layer51may be disposed on the second light transmitting layer45, and a point light source of uniform intensity is emitted to the lens plate70by the opening portion53of the light blocking layer51. The light blocking layer51will be referred to in the description of the first embodiment disclosed above. At least one of the opening portions53of the light blocking layer51may vertically overlap the light source25. The lens plate70has a plurality of convex portions71on one surface or the other surface of the light transmitting portion72and is spaced apart from the light blocking layer51to form an opening portion53of the light blocking layer51. A point light source of uniform intensity incident through the light source may be illuminated with stereoscopic lighting or a stereoscopic image.

FIGS.14and15are first and second modified examples of the lens plate in the first and second embodiments. As shown inFIG.14, the lens plate80includes a light transmitting portion82and a convex portion81on one or the other surface of the light transmitting portion82, and the convex portion81is disposed on the light transmitting portion82. In this case, light may be emitted through the curved surface83of the convex portion81. The lens plate80may include inclined portions82A and82B that are inclined as the distance from the center portion82C to the center of the lighting module100A in the first direction Y increases. The inclined portions82A and82B may be disposed at an acute angle R5with respect to a straight line horizontal to the center portion82C. The lens plate80has a region in which the interval G2between the inclined portions82A and82B and the light blocking layer51is different from each other in the first direction Y, and is disposed on the lighting module100A. Therefore, various stereoscopic effects may be realized as the interval G2is changed. Here, in order to prevent a problem that stereoscopic lighting interferes with each other in the center region C1of the lens plate80, the interval between the opening portions53of the light blocking layer51is maximized or interference between stereoscopic images may be reduced by minimizing the interval G2from the lens plate80. Alternatively, the interval between the convex portions81of the lens plate80may be further spaced apart, thereby reducing interference between stereoscopic images.

As shown inFIG.15, the lens plate80includes a light transmitting portion82and a convex portion81on one or the other surface of the light transmitting portion82, and when the convex portion81is disposed on the light transmitting portion82, light may be emitted through the curved surface83of the convex portion81. The lens plate80has a center portion85A inclined, a first extension portion85B horizontally extending from one end of the center portion85A, and a second extension portion85C horizontally extending from the other end portion of the lens plate80. The length of the center portion85A may be greater than the length of the first and second extension portions85B and85C. The inclination angle R6of the center portion85A may be an acute angle, and the first extension portion85B may be disposed higher than the position of the second extension portion85C. The first and second extension portions85B and85C are spaced apart from each other in a first direction, and the convex portions81of the lens plate80are arranged in a first direction Y and may be provided in a long length in a second direction X. Since the lens plate has regions having different intervals G3from the light blocking layer51in the first direction Y and is disposed on the lighting module100A, as the interval G3changes, various stereoscopic effects may be implemented. Here, in order to reduce the interference between the stereoscopic image on the center portion85A and the second extension portion85C of the lens plate80, the interval between the opening portions53of the light blocking layer51is maximized or the interval G3from the lens plate80may be reduced. Alternatively, the interval between the convex portions81of the lens plate80may be further spaced apart, thereby reducing interference between stereoscopic images.

FIGS.16and17are first and second modified examples of the lighting module in the lighting device of the invention, and the same parts as those described above are omitted and may be selectively applied. As shown inFIG.16, the lighting module100B may include a substrate11, a resin layer31, a light source25, and a first light transmitting layer61. The light source25may be provided in the form of an LED chip or a package, for example, may be disposed in the form of a flip chip. The resin layer31may cover or seal the light source25. The reflective layer15may be disposed on the resin layer31and the substrate11. The resin layer31may be formed of a transparent resin material, and may be in close contact with the substrate11and the reflective layer15. The first light transmitting layer61may be disposed on an upper surface and a side surface of the resin layer31. The first light transmitting layer61may be provided to surround the resin layer31. The side portion61A of the first light transmitting layer61may extend outside the resin layer31and may contact the reflective layer15and/or the substrate11. A diffusing agent may be added to the resin layer31, and the first light transmitting layer61may have at least one of phosphor and ink particles, or include both. For the phosphor or ink particle, reference will be made to the description disclosed above. The light blocking layer51may have an opening portion53and be disposed on the first light transmitting layer61. The first light transmitting layer61may be formed of a resin material such as silicone or epoxy. The lens plate70may selectively apply the embodiment or modified example disclosed above, and the convex portion71may be disposed on one surface or the other surface of the light transmitting portion72. As shown inFIG.17, a plurality of light transmitting layers61and63may be disposed on the resin layer31of the lighting module. The light transmitting layers61and63may include a first light transmitting layer61disposed on the surface of the resin layer31and a second light transmitting layer63disposed on the surface of the first light transmitting layer61. The first light transmitting layer61may be disposed on an upper surface and a side surface of the resin layer31. For example, the side portion61A of the first light transmitting layer61may extend to the lower end of the side surface of the resin layer31. The side portion63A of the second light transmitting layer63may be disposed outside the side portion61A of the first light transmitting layer61. The side portion61A of the first light transmitting layer61and the side portion63A of the second light transmitting layer63may be adhered to the substrate11. The first light transmitting layer61may be a layer having a phosphor. The second light transmitting layer63may be a layer having ink particles. The resin layer31may be provided as a layer without a diffusion agent or impurities. The first light transmitting layer61and the second light transmitting layer63may be formed of a resin material such as silicone or epoxy. By laminating a plurality of layers of a resin material on the outside of the resin layer31, the light source25may be protected from moisture.

Third Embodiment

FIG.18is an example of a plan view of a lighting device according to a third embodiment of the invention, andFIG.19is an example of a cross-sectional side view of the lighting device ofFIG.18. The same parts as those described above are omitted and may be selectively applied. As shown inFIGS.18and19, the lighting device201may include a lighting module100C and a lens plate70on the lighting module100C. The lighting module100C may include a light blocking layer51, or the light blocking layer51may be disposed between the lighting module100C and the lens plate70. The lighting module100C may include a light source21disposed on a substrate11, a first light transmitting layer33C, and a resin layer33A covering the light source21. The light source21may be a package that emits light in one direction or in the direction of the first light transmitting layer33C, for example, a side-view type package. As another example, the light source21may include an LED chip. The resin layer33A may cover the light sources21and may be spaced apart from the first light transmitting layer33C. As shown inFIG.18, the interval D4between the light sources21may be greater than the interval D2between the straight line connecting the light sources21and the incident surface of the first light transmitting layer (33C ofFIG.19). The resin layer33A may cover an upper surface, a front surface (e.g., an emission surface), and a rear surface of the light source21, and may be disposed at a height higher than the upper surface of the light source21. The resin layer33A may be formed of a resin material such as silicone or epoxy. The resin layer33A and the first light transmitting layer33C may overlap the light source21in the first direction Y. The first light transmitting layer33C is disposed on the substrate11, guides the light incident through the resin layer33A, and is emitted toward the light blocking layer51. The first light transmitting layer33C may provide surface lighting through the upper surface. The reflective layer15is disposed between the first light transmitting layer33C and the substrate11and may reflect incident light. The reflective layer15may be spaced apart from the resin layer33A or may be in contact with the resin layer33A. An upper surface of the first light transmitting layer33C may be disposed lower than an upper surface of the resin layer33A. The adhesive layer33B is disposed between the resin layer33A and the first light transmitting layer33C, and may reduce light loss at the interface between the resin layer33A and the first light transmitting layer33C. The adhesive layer33B may include a resin material such as silicone or epoxy, and may adhere the resin layer33A and the first light transmitting layer33C. The light blocking layer51may be disposed on the resin layer33A and the first light transmitting layer33C. The light blocking layer51may be adhered to a separate second light transmitting layer or implemented as a member having a thick thickness. A point light source having a uniform intensity passing through the opening portion53may be incident to the lens plate70, and the point light source may be illuminated by stereoscopic illumination or a stereoscopic image through the convex portion71.

Fourth Embodiment

FIG.20is an example of a plan view of a lighting device according to a fourth embodiment of the invention, andFIG.21is an example of a side cross-sectional view of the lighting device ofFIG.20. The same parts as those described above are omitted and may be selectively applied. Referring toFIGS.20and21, the lighting device may include a lighting module100D and a lens plate70on an emission side of the lighting module100D. The lighting module100D may include a light blocking layer51between the resin layer31and the lens plate70. The light blocking layer51may be a part of the lighting module100D or a separate member. The thickness of the lighting module100D may be 5 mm or less, for example, in the range of 2 mm to 5 mm. The lighting module100D may emit light having a thin line width on the emitting surface Sc2. The maximum length Y1of the lighting module100D or the maximum length of the resin layer31may be 10 mm or more, for example, in the range of 10 mm to 30 mm. The lighting module100D may include a substrate11, a light source21, a resin layer31, and first and second reflective layers15and19. The lighting module100D may include a light blocking layer51on the emission surface Sc2of the resin layer31. The first reflective layer15may be the reflective layer ofFIG.2, and may be disposed on the upper surface of the substrate11, and the second reflective layer19may be disposed on the upper surface of the resin layer31. The light source21may be sealed to the resin layer31. The resin layer31may cover the light sources21and emit light through the front surface or the emission surface Sc2. A rear surface of the resin layer31is a surface opposite to the front surface, and may be spaced apart from the light source21. The light source21may be implemented as a package including a body21B and an LED chip21C in the body21B. The body21B is a body made of a reflective resin material, and the LED chip21C may be connected to the substrate11through a lead frame. The light source21may include a first surface S1facing the emission surface Sc2or the light blocking layer51. The light emitted from the light source21may be blue, green, red, or white. As shown inFIG.21, the light sources21may be disposed on the same straight line, or a straight line connecting the centers of the light sources21may gradually move away from one end of the lens plate70toward the other end. The first and second reflective layers15and19reflect light generated from the light source21, and the reflected light or light emitted from the light source21may proceed to the emission surface in a line lighting along the resin layer31. The first reflective layer15may include an open region15B in which the light sources21are disposed. The first and second reflective layers15and19may be formed in a single-layer or multi-layer structure. The second reflective layer19may include a material that reflects light, for example, a metal or a non-metal material. When the second reflective layer19is a metal, it may include a metal layer such as stainless steel, aluminum (Al), or silver (Ag), and in the case of a non-metallic material, it may include a white resin material or a plastic material. At least one of the first and second reflective layers15and19may include a white resin material or a polyester (PET) material. At least one of the first and second reflective layers15and19may include at least one of a low reflection film, a high reflection film, a diffuse reflection film, and a regular reflection film. The light blocking layer51may have an opening portion53and may emit line lighting in the form of a point light source having uniform intensity through the opening portion53. The light blocking layer51may be in contact with or spaced apart from the emission surface of the resin layer31. The light blocking layer51may be in contact with or spaced apart from the first and second reflective layers15and19. The vertical length of the light blocking layer51may be equal to or greater than a straight-line length from the lower surface of the substrate11to the upper surface of the second reflective layer19. The light blocking layer51may cover the emission surface of the resin layer31and expose the opening portion53. Each side surface of the resin layer31and the substrate11may be disposed on the same vertical plane. Each side of the resin layer31and the second reflective layer19may be disposed on the same vertical plane. The sum of the areas of the opening portions53in the light blocking layer51may be 50% or less of the area of the emission surface Sc2of the resin layer31, for example, in the range of 1% to 50% or 1% to 25%. When the sum of the areas of the opening portions53is greater than the above range, the stereoscopic effect of the opening portions53may be reduced. At least one of the opening portions53may be disposed in a region that does not overlap the light source21in a horizontal direction or a light emission direction. The lens plate70may include a light transmitting portion72and a convex portion71on one or the other surface of the light transmitting portion72. The convex portion71may be, for example, disposed on one surface of the lens plate70or disposed on a surface corresponding to the light blocking portion.

The lens plate70may illuminate in a stereoscopic lighting using a point light source having a line width. The line width may be equal to or smaller than the thickness of the resin layer31. That is, the height of the opening portion53may be equal to or smaller than the thickness of the resin layer31.

Fifth Embodiment

FIG.22is an example of a cross-sectional side view of a lighting device according to a fifth embodiment of the invention, and the same parts as those described above are omitted and can be selectively applied. Referring toFIG.22, the lighting module may include a light blocking portion52disposed between the resin layer31and the light blocking layer51. The light blocking portion52may be formed of a material having a reflectance of 30% or more and/or a transmittance of 80% or less. The light blocking layer51may be adhered to the upper surface of the resin layer31by an adhesive layer52A, the adhesive layer52A may be disposed around the light blocking portion52, and the light blocking portion52may be disposed in a region overlapping the opening portion53of the light blocking layer51. The light blocking portion52has an area larger than that of the opening portion53and covers the entire region of the opening portion53. The light blocking part52may be disposed in a region covering the front surface (emission surface) from the rear surface of the light emitting device21to suppress hot spots. The light blocking part52may be disposed between the opening portion53and the resin layer31or between the opening portion53and the light emitting device21. Accordingly, the light blocking portion52suppresses hot spots, and the light emitted through the light blocking portion52is emitted as a point light source having a more uniform intensity through the opening portion53, and the point light source may proceed to a plurality of convex portions71A of the lens plate70. Accordingly, the point light source emitted from the opening portion53may be emitted as a stereoscopic image through the two or more convex portions71A.

The output image of the lighting device according to the change in the shape and size of the opening portion53disclosed inFIG.25Aand the output image of the lighting device may be different by the change in the interval G1between the light blocking layer51and the lens plate70. Here, one region of the opening portion53of the light blocking layer51may be disposed at the shortest interval from the upper end of the light emitting device21. The shortest interval may be less than or equal to the thickness of the resin layer31. The position of the opening portion53of the light blocking layer51may be formed within an interval of up to 15 mm or up to 12 mm in the emission direction (Y direction, omnidirectional or horizontal direction) of the light emitting device21from the center of the light emitting device21, and may be ±7.5 mm or less or 6 mm or less from the center of the light emitting device21in a direction (X direction, lateral direction, or vertical direction) perpendicular to the emission direction. The horizontal or vertical size of the opening portion53may be arranged in the range of n1×m1 to n2×m2, where the n1 and m1 may be 2 mm or more, and the n2 and m2 may be 15 mm or less. The opening portion53may be disposed one-to-one or many-to-one with each light emitting device21, and the stereoscopic image may be 1:n (n is 2 or more). Accordingly, when the opening portion53and each light emitting device21are arranged one-to-one, a plurality of stereoscopic images may be implemented with the minimum number of light emitting devices21by using the shape of the opening portion53and the number of convex portions71A, and a stereoscopic image can be realized using the minimum number of light emitting devices21by disposing the opening portion53and each light emitting device21in a many-to-one manner, and a number and brightness of the output image may be adjusted by adjusting the size of the opening portion53. When only the horizontal size is changed from 2 mm×2 mm to 10 mm×2 mm in the horizontal and vertical sizes of the opening portion53disclosed in the above embodiment(s), the output image is also increased in the horizontal direction. In addition, when only the vertical size of the opening portion53is changed from 2 mm×2 mm to 2 mm×10 mm in the horizontal and vertical sizes of the opening portion53, it may be seen that the output image also increases in the vertical direction and increases in the thickness direction. That is, when the size of the opening portion53increases in the same direction (horizontal direction) as the arrangement direction of the stereoscopic image, the thickness of the image increases, and when the opening portion53increases in the direction opposite to the arrangement direction (vertical direction), an image in the center may be displayed in a form of a straight line. Accordingly, the number of stereoscopic images may be implemented without using a separate diffusion plate or diffusion film between the light blocking layer51and the lens plate70. Also, by increasing the number of opening portions, the number of stereoscopic images may be adjusted. The interval G1between the light blocking layer51and the lens plate70is the height of the first air layer55, and may be provided by diffusing the light emitted through the opening portion53. An area on which light is incident on the lens plate70may be increased according to the interval G1, and a stereoscopic image may be output through two or three or more convex portions71A. Here, the interval G1may be provided in the range of 1 mm to 20 mm, and it may be seen that the output image becomes larger at the interval G1from 0 mm to 14 mm. For example, the output image may be output in a range of 2 to 5 times or a range of 3 to 5 times the interval G1. In this case, the output image may be a region having a luminous intensity greater than or equal to an average value. The length of the stereoscopic image may be adjusted by adjusting the interval G1.

FIG.30is a plan view of a vehicle to which a vehicle lamp to which a lighting module is applied according to an embodiment is applied, andFIG.31is a view showing a vehicle lamp having a lighting module or a lighting device disclosed in the embodiment. Referring toFIGS.30and31, the tail lighting800in the vehicle900may include a first lamp unit812, a second lamp unit814, a third lamp unit816, and a housing810. Here, the first lamp unit812may be a light source serving as a turn indicator, the second lamp unit814may be a light source serving as a sidelight, and the third lamp unit816may be a light source serving as a brake light, but is not limited thereto. At least one or all of the first to third lamp units812,814, and816may include the lighting device or module disclosed in the embodiment. The housing810accommodates the first to third lamp units812,814, and816, and may be made of a light-transmitting material. In this case, the housing810may have a curve according to the design of the vehicle body, and the first to third lamp units812,814, and816may implement a surface light source that may have a curved surface according to the shape of the housing810. Such a vehicle lamp may be applied to a turn signal lamp of a vehicle when the lamp unit is applied to a tail lamp, a brake lamp, or a turn signal lamp of a vehicle.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment may be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the invention. In addition, although the embodiment has been described above, it is only an example and does not limit the invention, and those of ordinary skill in the art to which the invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It may be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiment may be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.