WO2012111079A1 - Plaque de guidage de lumière et dispositif d'éclairage - Google Patents

Plaque de guidage de lumière et dispositif d'éclairage Download PDF

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Publication number
WO2012111079A1
WO2012111079A1 PCT/JP2011/053071 JP2011053071W WO2012111079A1 WO 2012111079 A1 WO2012111079 A1 WO 2012111079A1 JP 2011053071 W JP2011053071 W JP 2011053071W WO 2012111079 A1 WO2012111079 A1 WO 2012111079A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
light
bent
lighting device
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PCT/JP2011/053071
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English (en)
Japanese (ja)
Inventor
敦 杉崎
田中　順二
Original Assignee
次世代モバイル用表示材料技術研究組合
住友ベークライト株式会社
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Application filed by 次世代モバイル用表示材料技術研究組合, 住友ベークライト株式会社 filed Critical 次世代モバイル用表示材料技術研究組合
Publication of WO2012111079A1 publication Critical patent/WO2012111079A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide

Definitions

  • the present invention relates to a light guide plate for introducing light used in a liquid crystal display or the like and a lighting device using the light guide plate as a constituent member.
  • an edge light type backlight is used for a liquid crystal display such as a notebook PC (personal computer).
  • Patent Document 1 a backlight using an LED (light emitting diode) as a light source has been proposed in order to meet the demands for thinness, light weight, and low power consumption.
  • an edge light type backlight in which an LED is introduced from the end face is widely used for displays that require thinness, such as mobile applications and notebook PCs.
  • light guide plates are usually made of rigid plastic plates such as PMMA (polymethyl methacrylate) with a thickness of several millimeters or more. It is.
  • an illuminating device using a light guide plate it has not been assumed to be bent, but for example, an illuminating device such as an illumination for decoration of a Christmas tree, a complicated space in a limited space such as in an automobile, etc.
  • an illuminating device such as an illumination for decoration of a Christmas tree, a complicated space in a limited space such as in an automobile, etc.
  • a lighting device that can be bent such as for use on a curved surface, and a lighting device having a design based on light and dark.
  • the problem to be solved by the present invention has been made in view of such circumstances, and a light guide plate that can be bent and can be designed with light and darkness and a lighting device using the light guide plate as a constituent member Is to provide.
  • the present invention is configured as follows.
  • the invention according to claim 1 is a light guide plate that introduces light from a side surface or an end portion, and the light guide plate has a thin region, and the thickness of the light guide plate is reduced by the thin region.
  • the light guide plate is non-uniform due to the thin region and the thick region.
  • the invention according to claim 2 is the light guide plate according to claim 1, wherein the thin regions are arranged substantially periodically.
  • the thin region is disposed substantially perpendicular to a side surface or an end portion for introducing the light.
  • the light guide plate is disposed substantially perpendicular to a side surface or an end portion for introducing the light.
  • the invention according to claim 4 is the light guide plate according to any one of claims 1 to 3, wherein the thin region has a thickness of 500 ⁇ m or less.
  • the invention according to claim 5 is an illuminating device using the light guide plate according to any one of claims 1 to 4 as a constituent member.
  • the invention according to claim 6 is the illumination device according to claim 5, wherein the light guide plate is bent.
  • the invention described in claim 7 includes a plurality of strip-shaped light guide plates for introducing light from the end portions, and the plurality of strip-shaped light guide plates are arranged in a planar shape to form a constituent member. It is a lighting device.
  • the invention according to claim 8 is the illuminating device according to claim 7, characterized in that the plurality of strip-shaped light guide plates arranged in a plane are bent.
  • the invention according to claim 9 is the illuminating device according to any one of claims 5 to 8, wherein a light source for introducing light into the light guide plate is an LED.
  • the present invention has the following effects.
  • the light guide plate can be bent, and by using this structure, a backlight that can be bent to an arbitrary curvature and a curved curved illumination for decoration can be used. Can be used.
  • the embodiment of the present invention shows the most preferable mode of the present invention, and the present invention is not limited to this.
  • FIG. 1 is a diagram for explaining the structure of a light guide plate.
  • a light guide plate 10 according to the first embodiment is a light guide plate for introducing light from a side surface or an end, and the light guide plate 10 is formed in a square shape.
  • the light guide plate has a non-uniform structure due to the thin region 10a and the thick region 10b.
  • the thin region 10a of the light guide plate 10 is formed by a groove having a U-shaped cross section, but the groove shape is not particularly limited, and may be a V shape.
  • the thickness T1 of the thin region 10a is preferably 500 ⁇ m or less because it is easy to bend in the thin region 10a, and is preferably about 100 ⁇ m to 300 ⁇ m in view of the balance between bending and strength.
  • the thickness T2 of the thick region 10b is preferably about 0.5 mm to 2 mm for a mobile size, for example, and about 5 mm for an A3 size or more, depending on the size of the light guide plate 10. .
  • thin regions 10a are provided in a straight line perpendicular to the two directions at a predetermined interval D1, and thin regions 10a are periodically arranged in the two directions at predetermined intervals D1, although it has a lattice shape, the thin region 10a is not limited to being strictly periodic, but may be disposed substantially periodically.
  • the thin region 10a is provided orthogonal to the two directions, but is not limited to being orthogonal and may be provided to intersect.
  • the thin regions 10a are provided at a predetermined distance D1, but may be provided so that the distance gradually decreases from the center toward the outside, and the distance gradually increases from the outside toward the center. May be provided so as to be narrow. The interval may be gradually changed from one direction to the other.
  • FIG. 1 (a) shows a flat light guide plate
  • FIG. 1 (b) shows a bent light guide plate.
  • the light guide plate 10 has a structure in which the thickness of the light guide plate 10 is not uniform due to the thin region 10a and the thin region 10a and the thick region 10b, and the light guide plate of FIG. 10 is a flat state and is easily bent by the thin region 10a.
  • the other pair of opposite sides is a thin region 10a. Bending and bending positions are periodic.
  • the light guide plate 10 may be bent convexly or concavely. Further, by holding one side of the light guide plate 10 and bending it into a convex shape or a concave shape, the light guide plate 10 can be bent at the thin region 10a and the opposite side can be bent in the same manner.
  • FIG. 2 is a diagram for explaining an illumination device in which an LED is attached to a light guide plate.
  • the lighting device 20 includes the light guide plate 10 and the light emitting unit 21 shown in FIG. 1 for confining light.
  • the light guide plate 10 is formed from a transparent resin having a large refractive index, such as polycarbonate resin or methacrylic resin, and the lower surface of the light guide plate 10 is processed with irregularities, dot printing of diffuse reflection ink, or micro processing such as a lens structure. As a result, a light extraction pattern (not shown) is formed.
  • the light extraction pattern has a pattern density that gradually increases as the distance from the light emitting unit 21 increases.
  • the light guide plate 10 is provided with a light emitting unit 21 for introducing light.
  • the light emitting unit 21 is disposed to face the light incident surface of the light guide plate 10.
  • the light emitting unit 21 includes a case (not shown) in which a plurality of small light sources such as LEDs (light emitting diodes) are arranged on a circuit board (not shown), and each light source and the circuit board are placed in the case. It is sealed with a transparent mold resin.
  • the light emitting unit 21 of this embodiment uses an LED 22 as a light source, and the LED 22 is attached to the end 10c of the light guide plate 10.
  • the mounting position of the LED 22 is an end portion 10c corresponding to the thick region 10b of the light guide plate 10, and light is introduced from the end portion 10c.
  • LED22 may be attached to the edge part 10c of 1 direction of the light-guide plate 10, and may be attached to the edge part 10c of 2 directions.
  • FIG. 3 is a diagram showing a structure of illumination using a light guide plate.
  • a reflection plate 23 is provided on the reflection side surface of the light guide plate 10 in FIG. 2, and the illumination side surface is formed by a thin region 10a and a thick region 10b.
  • the prism sheet 24 and the diffusion plate 25 are laminated on each other.
  • the illuminating device 20 uses the light guide plate 10 as a constituent member, and light is introduced from an end surface of the light guide plate 10 facing the LED 22 by light emission of the LED 22, and the introduced light is guided through the light guide plate 10. Meanwhile, light is extracted to the front surface of the light guide plate 10 by the light extraction pattern formed on the back surface of the light guide plate 10. On the other hand, the light leaking to the back surface of the light guide plate 10 is reflected by the reflection plate 23 and returned to the inside of the light guide plate 10 for reuse.
  • the light extracted by the prism sheet 24 is given directivity in the front direction, and brightness unevenness is appropriately controlled by the diffusion plate 25. By applying these optical films, the entire surface of the light guide plate 10 is illuminated.
  • the lighting device 20 may introduce light into the flat light guide plate 10 or may introduce light into the bent light guide plate 10.
  • the lighting device 20 has a structure capable of bending the light guide plate 10 and has a configuration in which the light guide plate 10 is bent, so that the backlight or the curved curved surface for decoration that can be bent to an arbitrary curvature. Can also be used.
  • FIG. 4 is a diagram for explaining the configuration of the light guide plate.
  • the light guide plate 10 of the second embodiment is a light guide plate that introduces light from the side surface or the end as in the first embodiment.
  • the same components are denoted by the same reference numerals and description thereof is omitted.
  • the thin regions 10a are periodically arranged in a substantially arc shape at a predetermined interval, but are not limited to the arc shape, but are S-shaped, U-shaped, V-shaped.
  • the shape may be a square shape or the like, and is not limited to being strictly periodic, but may be arranged almost periodically.
  • the thin regions 10a are provided at a predetermined distance D1, but may be provided so that the distance gradually decreases from the center toward the outside, and the distance gradually increases from the outside toward the center. May be provided so as to be narrow.
  • FIG. 4 shows a state in which light is introduced into a flat light guide plate.
  • the light guide plate 10 has a thin region 10a and a light guide plate 10 having a thin region 10a and a thick region 10b. Therefore, the light guide plate 10 is easily bent by the thin region 10a, and the bending position is periodic.
  • FIG. 5 is a diagram for explaining the structure of illumination using a light guide plate.
  • the illuminating device 20 of this 2nd Embodiment is comprised from the light-guide plate 10 and the light emission part 21 of FIG. LED22 of the light emission part 21 is attached to the edge part 10c of the light-guide plate 10 similarly to 1st Embodiment.
  • the mounting position of the LED 22 is an end portion 10c corresponding to the thick region 10b of the light guide plate 10, and light is introduced from the end portion 10c.
  • the illumination structure using the light guide plate is the same as that of the first embodiment, and the illumination device 20 uses the light guide plate 10 as a constituent member. Light is emitted from the LEDs 22 to the LEDs 22 of the light guide plate 10. It is introduced from the opposite end face and illuminated on the entire surface of the light guide plate 10 as in the first embodiment.
  • the lighting device 20 has a structure capable of bending the light guide plate 10 and has a configuration in which the light guide plate 10 is bent, so that the backlight or the curved curved surface for decoration that can be bent to an arbitrary curvature. Can also be used.
  • FIG. 6 is a diagram for explaining the configuration of the light guide plate.
  • the light guide plate 10 of the third embodiment is a light guide plate that introduces light from the side surface or the end as in the first embodiment.
  • the same components are denoted by the same reference numerals and description thereof is omitted.
  • the thin region 10a is disposed substantially perpendicular to the side surface or the end where light is introduced, and is not limited to being strictly perpendicular but is disposed substantially vertically. It only has to be done.
  • the thin region 10a may be inclined with respect to the side surface or the end portion into which light is introduced.
  • FIG. 6 (a) shows a flat light guide plate
  • FIG. 6 (b) shows a bent light guide plate
  • the light guide plate 10 has a structure in which the thickness of the light guide plate 10 is non-uniform due to the thin region 10a and the thin region 10a and the thick region 10b, and the light guide plate of FIG. 10 is a flat state and is easily bent by the thin region 10a.
  • the light guide plate 10 in FIG. 6B is linearly supported by the frame 11 so that a pair of opposing sides of the light guide plate 10 are close to each other, whereby the other pair of opposing sides is a thin region 10a.
  • the position of bending and bending due to is periodic.
  • FIG. 7 is a diagram for explaining an illumination device in which an LED is attached to a light guide plate.
  • the lighting device 20 according to the third embodiment includes the light guide plate 10 and the light emitting unit 21 shown in FIG. 6, and the light emitting unit 21 uses an LED 22 as a light source for introducing light.
  • the unit 21 is configured similarly to the first embodiment.
  • FIG. 8 is a diagram showing a structure of illumination using a light guide plate.
  • the illumination structure using the light guide plate of the third embodiment is the same as that of the first embodiment, and the lighting device 20 uses the light guide plate 10 as a constituent member.
  • Light is introduced from the end face of the light guide plate 10 facing the LED 22 and illuminated on the entire surface of the light guide plate 10 as in the first embodiment.
  • the lighting device 20 has a structure capable of bending the light guide plate 10 and has a configuration in which the light guide plate 10 is bent, so that the backlight or the curved curved surface for decoration that can be bent to an arbitrary curvature. Can also be used.
  • FIG. 9 is a diagram for explaining the configuration of the light guide plate, and the light guide plate 10 of the fourth embodiment is a light guide plate for introducing light from the side surface or the end as in the first embodiment.
  • the same components are denoted by the same reference numerals and description thereof is omitted.
  • the illuminating device 20 of the fourth embodiment includes a light guide plate 10 and a light emitting unit 21, and the light emitting unit 21 uses an LED 22 and an optical waveguide 30 as a light source for introducing light.
  • the LED 22 and the optical waveguide 30 are configured as shown in FIG. 10, and light propagates through the core of the optical waveguide 30 by the light emission of the LED 22, and the light is extracted from the position on the light guide plate side to be introduced. It is introduced from the end face facing the core of the waveguide.
  • this optical waveguide 30 for example, a polymer optical waveguide is used.
  • an optical waveguide formed by using a photolithography method can be used, and the core portion and the clad portion each use an acrylate having a different refractive index.
  • LED22 may be attached to the one side of the optical waveguide 30, and may be attached to both sides.
  • the light emitting unit 21 may be attached to one side of the light guide plate 10 or may be attached to both sides, and by using the LED 22 and the optical waveguide 30 as a light source, the LED 22 can be reduced and the power consumption can be reduced.
  • FIG. 11 is a diagram for explaining the configuration of the light guide plate.
  • the light guide plate 10 of the fifth embodiment is a light guide plate that introduces light from the side surface or the end as in the first embodiment.
  • the same components are denoted by the same reference numerals and description thereof is omitted.
  • the light guide plate 10 of the fifth embodiment has a shape in which the circular part 10e and the center part 10f are deleted, and has a thin area 10a formed radially from the center part 10f.
  • the thickness of the light guide plate is not uniform due to the thin region 10a and the thin region 10a and the thick region 10b.
  • FIG. 12 shows a state in which a flat light guide plate is bent.
  • the circular light guide plate 10 is bent so as to connect a circular portion 10e, the light guide plate 10 has a conical shape, and the light guide plate 10 is flat but thin.
  • the region 10a is easy to bend.
  • FIG. 13 is a diagram illustrating the structure of illumination using a light guide plate.
  • the illuminating device 20 of this 5th Embodiment is comprised from the light-guide plate 10 and the light emission part 21 of FIG.
  • the LED 22 of the light emitting unit 21 is configured in the same manner as in the first embodiment, but is attached to the central portion 10 f of the light guide plate 10 and introduces light from the end portion 10 g of the light guide plate 10.
  • the lighting device 20 has a structure that allows the light guide plate 10 to be bent into a conical shape, and has a structure in which the light guide plate 10 is bent into a conical shape. Can be used.
  • FIG. 14 is a diagram for explaining the arrangement configuration of the light guide plate
  • FIG. 15 is a diagram showing a state in which the arranged light guide plate is bent.
  • the light guide plate 50 of the sixth embodiment introduces light from the end. It is a strip-shaped light guide plate, a plurality of strip-shaped light guide plates 50 are arranged in a planar shape, and a gap W ⁇ b> 1 is provided between adjacent light guide plates 50.
  • the light guide plates 50 may be bent in a convex shape or in a concave shape, and a gap W ⁇ b> 1 is provided between adjacent light guide plates 50. And can be bent more easily.
  • the light guide plate 50 of this embodiment has the same width, but a light guide plate that gradually decreases in width toward the center, or a light guide that gradually decreases in width from the center to the outside. A light plate may be used.
  • FIG. 16 is a diagram for explaining an illumination device in which an LED is attached to a light guide plate.
  • the illuminating device 20 of the sixth embodiment is composed of the light guide plate 50 and the light emitting portion 21 of FIG. 14 and FIG. 15 for confining light, and includes a strip-shaped light guide plate 50 for introducing light from an end portion.
  • a plurality of strip-shaped light guide plates 50 are arranged in a planar shape to form constituent members.
  • the light guide plate 50 is provided with a light emitting unit 21 for introducing light, and the light emitting unit 21 is configured in the same manner as in the first embodiment.
  • the lighting device 20 has a configuration in which a plurality of strip-shaped light guide plates 50 arranged in a planar shape are bent.
  • FIG. 17 is a diagram showing a structure of illumination using a light guide plate.
  • a reflection plate 23 is provided on the reflection surface side of the light guide plate 50 in FIGS. 14 and 15, and a prism sheet 24 and a diffusion plate 25 are provided on the display surface side. Are stacked.
  • a polymethyl methacrylate (PMMA) plate material may be cut out and used, or one manufactured by an injection molding method may be used.
  • PMMA polymethyl methacrylate
  • the material that can be used for the light guide plate PMMA, polycarbonate resin, and the like are often used. However, other plastic materials may be used as long as necessary characteristics such as high light transmittance are satisfied.
  • the thin region of the light guide plate may be formed when the light guide plate is formed, or may be formed by laser cutting after the light guide plate is formed.
  • any conventionally known method may be used.
  • light can be extracted by printing a dot pattern on the light guide plate, forming a three-dimensional diffusion dot on the light guide plate, or forming a lens structure on the light guide plate.
  • a pigment such as titanium oxide (TiO2) or barium sulfate (BaSO4) and an acrylic binder are mixed and applied to a light guide plate by screen printing.
  • This printed white dot pattern reduces the dot diameter and decreases the quantity near the light source, but increases the dot diameter and increases the quantity far from the light source. It is possible to control the luminance of the entire surface to be uniform by the dot pattern arrangement.
  • a prism sheet or a polarization separation sheet may be formed on the light extraction side and a reflective film may be formed on the back surface in order to improve luminance.
  • a diffusion sheet may be inserted on the light extraction side in order to eliminate luminance unevenness.
  • a method of forming a prism-shaped pattern that is devised to control the directivity of light extracted from the light guide plate to be constant can also be used.
  • the light emitting unit examples include a cold cathode tube, an LED, and electroluminescence (EL) as a light source.
  • the LED light source is usually a case in which a plurality of small light sources such as LEDs are arranged on a circuit board in a case (not shown), and each light source and circuit board are sealed with a transparent mold resin in the case. Yes.
  • cold cathode fluorescent lamps have been widely used because of their luminance and power consumption characteristics, but LEDs are used for displays of mobile phones and portable devices because they can be driven at a low voltage.
  • the light emitting unit may use a light source for introducing light and an optical waveguide.
  • the optical waveguide that can be used here is, for example, a polymer optical waveguide.
  • an optical waveguide formed using a photolithography method can be used, and the core portion and the cladding portion are made of acrylates having different refractive indexes.
  • the polymer optical waveguide is not limited, and it can be used regardless of its formation method or polymer material as long as it is flexible and has high transmittance for white light guided from the light source. can do.
  • Lighting device It can also be used for backlights that can be bent to any curvature and curved lighting for decoration.
  • backlights that can be bent to any curvature and curved lighting for decoration.
  • decorative lighting devices such as Christmas tree lighting
  • lighting devices that can be bent such as for use in complicated curved surfaces in limited spaces such as in automobiles
  • curved backlights These lighting devices may be designed according to light and darkness.
  • Backlights are used for edge light type backlights that convert line light sources or point light sources into flat light sources, and edge light type backlights are line light sources (or point light sources) because the light source is provided on the side. Suitable for thinning.
  • the edge-light type backlight is a component of light whose component is smaller than the total reflection angle when the light source placed on the side of the light source travels while totally reflecting inside the light guide plate. Using the phenomenon that appears on the surface of the light guide plate, the line (or point) light source is converted into a surface light source.
  • an edge light type backlight starts from the production of a light guide plate.
  • This light guide plate is produced by injection molding, and at the same time, a dot pattern is created, or a white dot pattern is created by printing after the light guide plate is produced.
  • an optical film such as a reflection film, a diffusion sheet, and a prism sheet is assembled and assembled, and then a light emitting unit such as an LED or a cold cathode tube is attached to manufacture a backlight.
  • Example 1 18 and 19 show a strip-type lighting device.
  • the light guide plate purchased optical grade PMMA (polymethyl methacrylate) was used.
  • the light guide plate is a strip, and the size of the light guide plate is 58 mm ⁇ 12 mm.
  • the six light guide plates are arranged with no gap therebetween, and the overall size is 58 mm for the short side and 72 mm for the long side.
  • the optical grade PMMA of the light guide plate has a thickness of 0.5 mm and is formed by printing a diffusion pattern on one side of the sheet.
  • the short side 58 mm side is not bent, the long side 72 mm side is bent, and the radius of curvature is : 200 mm.
  • a light extraction pattern of dot printing was formed on the lower surface of the light guide plate, and this light extraction pattern gradually increased in pattern density as it moved away from the light emitting portion.
  • a reflection plate was provided on the reflection side surface of the light guide plate, and a prism sheet and a diffusion plate were laminated on the front surface of the illumination.
  • the light emitting part was disposed to face the light incident surface of the light guide plate.
  • this light emitting section a plurality of LEDs arranged on a circuit board were accommodated in a case, and each light source and circuit board were sealed with a transparent mold resin in the case. In Example 1, it could be used for backlighting and curved lighting for decoration.
  • Example 2 As the light guide plate, purchased optical grade PMMA (polymethyl methacrylate) was used.
  • the light guide plate has a short side of 58 mm and a long side of 72 mm, and linear grooves are formed on the long side of 72 mm vertically by laser cutting at 12 mm intervals. This groove has a V-shaped cross section, and the thickness of the thin region is set to 100 ⁇ m.
  • Example 2 Except for the light guide plate, the same procedure as in Example 1 was performed. The short side 58 mm side was not bent, and the long side 72 mm side was bent to have a curvature radius of 200 mm. In the same manner as in Example 1, it could be used for backlight and curved lighting for decoration.
  • the present invention can be applied to a light guide plate for introducing light used in a liquid crystal display and the like and a lighting device using the light guide plate as a constituent member, can be bent, and can also be designed with light and dark. .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

La présente invention a pour objectif un dispositif d'éclairage qui peut être plié, et qui peut être conçu à l'aide de la clarté et de l'obscurité. Pour ce faire, une plaque de guidage de lumière (10) introduit la lumière depuis les côtés ou extrémités. La plaque de guidage de lumière (10) comporte des régions minces (10a), et l'épaisseur de la plaque de guidage de lumière (10) dans les régions minces (10a) est hétérogène en raison des régions minces (10a) et des régions épaisses (10b). Les régions minces (10a) sont positionnées de façon à peu près périodique. En outre, les régions minces (10a) sont positionnées à peu près verticalement par rapport aux côtés ou extrémités où la lumière est introduite. De plus, les régions minces (10a) ont des épaisseurs de pas plus de 500 μm. Un dispositif d'éclairage (20) utilise la plaque de guidage de lumière (10) comme élément constituant, et est configuré de sorte que la plaque de guidage de lumière soit pliée. En outre, le dispositif d'éclairage (20) comporte de multiples plaques de guidage de lumière en forme de bande (50) qui introduisent la lumière depuis les extrémités, est configuré de sorte que les multiples plaques de guidage de lumière en forme de bande (50) soient positionnées dans un plan et servent d'éléments constituants, et les multiples plaques de guidage de lumière en forme de bande positionnées dans un plan sont pliées. Une LED est utilisée comme source de lumière pour introduire de la lumière dans la plaque de guidage de lumière.
PCT/JP2011/053071 2011-02-14 2011-02-15 Plaque de guidage de lumière et dispositif d'éclairage WO2012111079A1 (fr)

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JP2011-028996 2011-02-14
JP2011028996A JP2012169144A (ja) 2011-02-14 2011-02-14 導光板および照明装置

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ITMI20130921A1 (it) * 2013-06-05 2014-12-06 Itaca Nova S R L Dispositivo di illuminazione avente forma di lastra con fosfori e diffusori.
EP2857742A1 (fr) * 2013-10-04 2015-04-08 Automotive Lighting Reutlingen GmbH Conducteur lumineux pour dispositif d'éclairage de véhicule

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CN103883982B (zh) * 2012-12-21 2016-03-16 普昱光电股份有限公司 照明装置的导光体及其成型方法
JP6244754B2 (ja) * 2013-09-03 2017-12-13 日亜化学工業株式会社 発光装置、及び光源装置
WO2016157350A1 (fr) * 2015-03-30 2016-10-06 堺ディスプレイプロダクト株式会社 Dispositif d'affichage

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JP2006210108A (ja) * 2005-01-27 2006-08-10 Sony Corp バックライトユニットおよび液晶表示装置
JP2008140698A (ja) * 2006-12-04 2008-06-19 Sony Corp バックライト装置及び液晶表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130921A1 (it) * 2013-06-05 2014-12-06 Itaca Nova S R L Dispositivo di illuminazione avente forma di lastra con fosfori e diffusori.
EP2857742A1 (fr) * 2013-10-04 2015-04-08 Automotive Lighting Reutlingen GmbH Conducteur lumineux pour dispositif d'éclairage de véhicule

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