WO2013121862A1 - Unité de source de lumière - Google Patents

Unité de source de lumière Download PDF

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Publication number
WO2013121862A1
WO2013121862A1 PCT/JP2013/051676 JP2013051676W WO2013121862A1 WO 2013121862 A1 WO2013121862 A1 WO 2013121862A1 JP 2013051676 W JP2013051676 W JP 2013051676W WO 2013121862 A1 WO2013121862 A1 WO 2013121862A1
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WO
WIPO (PCT)
Prior art keywords
light source
light
source unit
incident
entrance
Prior art date
Application number
PCT/JP2013/051676
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English (en)
Japanese (ja)
Inventor
直井由紀
Original Assignee
コニカミノルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コニカミノルタ株式会社 filed Critical コニカミノルタ株式会社
Publication of WO2013121862A1 publication Critical patent/WO2013121862A1/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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]

Definitions

  • the present invention relates to a light source unit, and more particularly to a light source unit capable of performing uniform illumination by entering light from a light source.
  • Surface emitting lighting using a light guide is used for general lighting, signage, signs, interior goods, etc.
  • an illumination device that can emit light to the edge with less unevenness.
  • the light emitting surface is not limited to a simple circle or rectangle, and a complicated shape is also required.
  • a light emitting element is mounted on a rigid printed board that does not have flexibility
  • the light source unit is configured by arranging the rigid printed board in a polygonal shape, and a recess formed in the center of the light guide plate.
  • the linear portions constituting the polygonal shape of the light source unit are arranged on the light guide plate in a positional relationship such that the linear portions are parallel to the sides constituting the outer peripheral edge of the light guide plate and perpendicular to the diagonal line of the light guide plate.
  • a through-hole for installation is formed from the front surface to the back surface of the light guide plate, and the central portion of the light source unit that fixes the formation position at the center of the light guide plate is connected to the corners of the polygonal shape. It is provided on the line that is extended to the surface of the light plate.
  • the present invention has been made in view of such problems of the prior art, and based on a new idea, an LED light source is used to uniformly emit light while suppressing unevenness even with an asymmetric light emitting surface shape.
  • An object of the present invention is to provide a light source unit capable of performing the above.
  • the light source unit includes an LED light source and a light guide plate.
  • the light guide plate has an entrance surface, an exit surface composed of a continuous surface, and a light extraction structure, and light emitted from the LED light source enters the light guide plate by entering from the entrance surface. Light is incident on the light extraction structure, and then exits from the exit surface.
  • the incident surface has a first incident surface and a second incident surface arranged to face the light emitting surface of the LED light source on the side opposite to the emitting surface, When the exit surface is projected onto a virtual plane together with the first entrance surface and the second entrance surface, the first entrance surface and the second entrance surface are provided inside the edge of the exit surface.
  • a line segment connecting the geometric center of gravity of the exit surface and a point on the edge of the exit surface farthest from the geometric center of gravity is the both ends of the first entrance surface and the second entrance surface, respectively. It intersects with at least one of the line segments which connect parts.
  • the light guide plate has an incident surface, an emission surface constituted by a continuous surface, and a light extraction structure, and a light beam emitted from the LED light source is incident from the incident surface. Since the light is guided through the light guide plate and incident on the light extraction structure, the light is emitted from the light exit surface. Therefore, there is no illuminance even from the light exit surface on the side and back side of the LED light source. It is possible to cause surface emission.
  • a line segment connecting the geometric center of gravity of the exit surface and a point on the edge of the exit surface farthest from the geometric center of gravity is at both ends of the first entrance surface and the second entrance surface.
  • the exit surface that is at least one of the first entrance surface and the second entrance surface that is farthest from the geometric center of gravity is configured to intersect with at least one of the line segments connecting the parts. Accordingly, light can be emitted with a certain amount of light even from the edge of the exit surface that is farthest away, and surface light can be emitted with as uniform illuminance as possible even with an asymmetrical shape.
  • projecting the exit surface onto a virtual plane means that, when the exit surface is a plane, projecting along the normal direction to a virtual plane orthogonal to the normal of the exit surface. This means that when the exit surface is a curved surface, projection is performed along the specific direction on a virtual plane orthogonal to the specific direction where the projected area of the exit surface is the largest.
  • the “line segment connecting the geometric center of gravity of the exit surface and the point on the edge of the exit surface farthest from the geometric center of gravity” is the entire line segment projected on the virtual plane. Is included in the exit surface.
  • the emission surface may be a flat surface, a curved surface (curved surface), or a free curved surface.
  • At least one of the first incident surface and the second incident surface may be a flat surface or a curved surface. If the first incident surface and the second incident surface are not parallel to the exit surface, a surface obtained by extending these surfaces may be used. They may be orthogonal or inclined.
  • a light source unit is the light source unit according to the first aspect, wherein when the exit surface is projected onto a virtual plane together with the first entrance surface and the second entrance surface, the maximum length of the exit surface Is MXB (mm), and the maximum length of the normal line from the first incident surface to the second incident surface and the normal line from the second incident surface to the first incident surface is MXC (mm ), The following expression is satisfied. 0.03 ⁇ MXC / MXB ⁇ 0.5 (1)
  • the value of the formula (1) exceeds the lower limit, the distance between the LED light sources facing the first incident surface and the second incident surface can be prevented from being too narrow.
  • the value of the expression (1) is less than the upper limit, the distance between the LED light sources facing the first incident surface and the second incident surface can be widened, and the geometric gravity center of the light guide plate Since it is possible to emit light while suppressing uneven illuminance to the farthest edge, the illuminance of the exit surface area surrounded by the LED light source can be kept high.
  • the center of gravity position is in a region sandwiched between the first incident surface and the second incident surface.
  • one of the first incident surface and the second incident surface can be directed to the edge of the emission surface that is farthest from the geometric center of gravity, and thereby the edge of the emission surface that is furthest away from the geometric center of gravity. Therefore, it is possible to emit light with a certain amount of light, so that even if it has an asymmetric shape, surface light can be emitted with as uniform illumination as possible.
  • the light source unit according to claim 4 is characterized in that, in the invention according to any one of claims 1 to 3, a back-side reflecting surface is provided opposite to the surface opposite to the exit surface.
  • the light emitted from the surface opposite to the emission surface can be returned to the light guide plate by being reflected by the back-side reflection surface, and emitted from the emission surface.
  • the light source unit according to claim 5 is characterized in that, in the invention according to claim 4, the light extraction structure is provided on a surface opposite to the emission surface.
  • the light extraction structure By providing the light extraction structure, the light emitted from the surface opposite to the emission surface can be returned to the light guide plate again by reflecting on the back-side reflection surface, and emitted from the emission surface, Light utilization efficiency is increased.
  • the light extraction structure may be provided on the emission surface.
  • the light source unit according to claim 6 is characterized in that, in the invention according to claim 4 or 5, the back-side reflecting surface has an uneven shape.
  • the direction of light reflected from the back-side reflecting surface can be easily controlled by the uneven shape. Moreover, since the light reflected by the uneven shape appears to shine, the design can be improved.
  • a light source unit according to claim 7 is the light source unit according to any one of claims 1 to 6, wherein a side reflection surface is provided opposite to the side surface of the light guide plate, and light emitted from the side surface is emitted from the side surface. It is characterized by being reflected toward.
  • the light emitted from the side surface of the light guide plate can be returned to the light guide plate again by being reflected by the side reflection surface, and can be emitted from the light emission surface, thereby increasing the light utilization efficiency.
  • the light source unit according to claim 8 is characterized in that, in the invention according to any one of claims 1 to 6, an optical functional film that reflects light is provided on a side surface of the light guide plate.
  • the light that has reached the side surface of the light guide plate is reflected by the optical function film so that it can be guided again into the light guide plate and emitted from the exit surface, thereby increasing the light utilization efficiency.
  • the light source unit according to claim 9 is the invention according to any one of claims 1 to 8, wherein the first incident surface and the second incident surface protrude from a surface opposite to the exit surface.
  • the light emission directions are opposite to each other.
  • a light source unit is the light source unit according to any one of the first to eighth aspects, wherein the first incident surface and the second incident surface are concave portions recessed on a surface opposite to the emission surface. It is a side surface, and the light emission directions are opposite to each other.
  • the light source unit according to claim 11 is characterized in that, in the invention according to any one of claims 1 to 10, a light shielding member is disposed at least between the LED light source and the emission surface. .
  • the LED light source can be prevented from being viewed as a bright spot from the exit surface side, and more uniform illuminance can be realized.
  • plastic glass, silicon resin, urethane resin, olefin resin, and gel can be used.
  • a diffusing material is preferably printed in the form of dots for light extraction, but may be a protrusion.
  • a light source unit that uses an LED light source and can uniformly emit light while suppressing unevenness even with an asymmetric light emitting surface shape.
  • FIG. 1 is a perspective view of the light source unit 10 according to the first embodiment viewed in the inverted state.
  • FIG. 2 is a diagram illustrating a state in which the light source unit 10 is projected onto a virtual plane.
  • FIG. 3 is a diagram illustrating a state in which the light source unit 10 is cut at a position corresponding to the line III-III in FIG.
  • the back reflector is shown in a removed state.
  • the substrate of the LED light source is omitted.
  • some dimensions are exaggerated in each figure.
  • the light source unit 10 of the present embodiment is disposed between the LED light source 20, the light guide plate 30, the back-side reflecting material 37 provided on the back side of the light guide plate 30, and the LED light source 20 and the light guide plate 30.
  • the light shielding member 40 is included. In addition, you may use the back side reflection material 37 and the light-shielding member 40 together.
  • the light guide plate 30 made of a light-transmitting material has a flat plate shape of an atypical rectangular shape as a whole, and has a convex portion 32 in which the center of the back surface 31 is raised one step in a flat plate shape.
  • a space for storing the LED chip, wiring, and the like of the LED light source 20 is below the back surface 31 other than the convex portion 32.
  • the light guide plate 30 includes a first incident surface 33 and a second incident surface 34 that are side surfaces of the convex portion 32, and an emission surface 35 that is opposite to the back surface 31 and is formed of a continuous surface (here, a flat surface). .
  • the light extraction structure is provided on the back surface 31 (including the surface 32a of the convex portion 32).
  • the light extraction structure is a structure in which, for example, a fine dot-shaped diffusion material 36 is attached to the back surface 31 by printing or the like, but a fine uneven structure may also be used.
  • a flat back-side reflecting material 37 is provided through a slight air layer so as to face the back surface 31 provided with the light extraction structure.
  • the light emitting surfaces of one or a plurality of LED chips constituting the LED light source 20 are provided facing the first incident surface 33 and the second incident surface 34 facing each other.
  • the light emitting surfaces of one or a plurality of LED chips may be opposed to the surfaces 32b and 32c intersecting the first incident surface 33 and the second incident surface 34. That is, three or more incident surfaces may be provided.
  • the side surface that is not used as the incident surface may be formed with an impermeable film on the side surface, or a light-shielding member made of an impermeable material may be disposed in the vicinity.
  • the opaque material may be a reflective material.
  • the first entrance surface 33 and the second entrance surface 34 are edges of the exit surface 35. It is provided inside E. Further, a line segment L1 connecting the geometric gravity center M of the exit surface 35 and the point B ′ on the edge of the exit surface farthest from the geometric center of gravity M is the first entrance surface 33 and the second entrance surface 34. Each line intersects at least one of the line segments L2 and L3 (L2 in this case) that connects the two ends (which appear to overlap the projected first incident surface 33 and second incident surface 34 in FIG. 2).
  • the maximum length of the exit surface 35 (here, the distance between the corners B ′ and B of the exit surface 35) is MXB (mm), and the first entrance surface 33 to the second entrance surface 34.
  • the maximum normal line from the second incident surface 34 to the first incident surface 33 (here, the length of the normal line NL from the second incident surface 34 to the first incident surface 33 is MXC ( mm), the following formula is satisfied. 0.03 ⁇ MXC / MXB ⁇ 0.5 (1)
  • the geometric gravity center M is in a region sandwiched between the first incident surface 33 and the second incident surface 34 (here, in a region where the convex portion 32 is projected).
  • a reflective film 35 a is formed on the side surface of the light guide plate 30.
  • a thin plate-shaped light shielding member 40 is disposed between the LED light source 20 and the back surface 31 opposite to the emission surface 35 with a thin air layer therebetween.
  • the light shielding member 40 is made of a material that does not transmit light, but may be a white plate or a mirror. However, the reflective film 35a and the light shielding member 40 are not necessarily provided.
  • the light beam emitted from the LED light source 20 enters the light guide plate 30 from the first incident surface 33 and the second incident surface 34.
  • the light incident on the light guide plate 30 is totally reflected by being incident shallowly on the lower surface of the exit surface 35 and further totally reflected on the back surface 31 (a part of the diffuser 36). And is emitted from the back surface 31 (which will be described later).
  • the light is guided to the side surface of the light guide plate 30, where it is reflected by the reflection film 35a, and again by total reflection. Repeat the light guide.
  • the light diffused by the diffusing material 36 and emitted from the back surface 31 is reflected by the back-side reflecting material 37 and then enters the back surface 31 again.
  • the light enters the emitting surface 35 at a relatively deep angle. The total reflection condition is not satisfied, and the light is transmitted through the emission surface 35 as it is to illuminate the outside as illumination light.
  • the light reflected from the back-side reflecting material 37 by the concavo-convex shape is reflected. It becomes easier to control the direction.
  • the design can be improved and the side surface of the convex portion 32 including the first incident surface 33 and the second incident surface 34 when viewed from the exit surface 35 side. There is also an effect that the (boundary portion) becomes inconspicuous.
  • the present embodiment by performing such light guide and emission, it is possible to cause surface emission with uniform illuminance from the emission surface 35 on the side surface and the back surface side of the LED light source 20.
  • a line segment L1 connecting the geometric gravity center M of the emission surface 35 and the corner B ′ of the emission surface 35 farthest from the geometric gravity center M connects the two end portions of the first incidence surface 33.
  • the second entrance surface 34 can be directed to the corner B ′ of the exit surface 35 that is farthest from the geometric center of gravity M, and thus from the second entrance surface 34.
  • the incident light from the LED light source 20 can be guided to the vicinity of the corner B ′ of the emission surface 35 so that the light can be emitted with a certain amount of light, and even if the emission surface 35 has an asymmetric shape. Surface light can be emitted with as uniform illuminance as possible.
  • the light shielding member 40 is provided between the LED light source 20 and the back surface 31 on the opposite side of the emission surface 35, the light emitted from the LED light source 20 does not directly enter the back surface 31.
  • the light enters from the first incident surface 33 and the second incident surface 34. Therefore, it can suppress that only the vicinity of the LED light source 20 becomes bright.
  • FIG. 4 is a perspective view of the light source unit 10 ′ according to the second embodiment viewed in the inverted state.
  • FIG. 5 is a diagram showing a state in which the light source unit 10 ′ is cut at the same position as in FIG.
  • the overall shape is an atypical rectangular flat plate shape.
  • the back surface 31 has a recess 32 ′ that is one step lower than the peripheral portion.
  • a first incident surface 33 and a second incident surface 34 are provided on the side surface of the recess 32 ′.
  • a back-side reflecting material 41 is provided so as to face the back surface 31 (including the bottom surface 32a of the recess 32 ′).
  • the inside of the recess 32 ′ is a space for storing the LED chip, the wiring, and the like of the LED light source 20.
  • the side surface not used as the incident surface may be formed with an opaque film on the surface of the side surface, or a light shielding member made of an opaque material may be disposed in the vicinity.
  • the opaque material may be a reflective material.
  • the light beam emitted from the LED light source 20 enters the light guide plate 30 from the first incident surface 33 and the second incident surface 34.
  • the light incident into the light guide plate 30 is totally reflected by being incident shallowly on the lower surface of the exit surface 35, and further totally reflected on the back surface 31 (some are not shown).
  • the light is diffused by the diffusing material and emitted from the back surface 31), and is guided by repeating total reflection to reach the side surface of the light guide plate 30, where it is reflected by the reflection film 35 a and is again guided by total reflection.
  • the light diffused by the diffusing material 36 and emitted from the back surface 31 is reflected by the back-side reflecting material 37 or the back-side reflecting material 41 and then enters the back surface 31 again. Therefore, the total reflection condition is not satisfied, and the light is transmitted through the emission surface 35 as it is to illuminate the outside as illumination light.
  • the diffusion material 36 having the light extraction structure is provided on the back surface 31. However, even if it is provided on the emission surface 35, the same effect is exhibited.
  • FIG. 6 is a cross-sectional view showing a part of a light source unit according to a modification of the above-described embodiment.
  • a side reflection member 38 instead of providing a reflective film on the side surface 39 of the light guide plate 30, a side reflection member 38 having a reflective surface 38 a facing the side surface 39 is provided.
  • the light guided through the light guide plate 30 by repeating total reflection is emitted from the side surface 39, reflected by the reflection surface 38 a of the side reflection member 38, and incident from the side surface 39 again.
  • the light guide is repeated by total reflection in the light guide plate 30 again.
  • Other configurations are the same as those in the above-described embodiment.
  • FIG. 7 is a cross-sectional view showing a part of a light source unit according to a modification of the above-described embodiment.
  • the periphery of the LED light source 20 is covered with a light shielding member 42 made of a material that does not transmit light, except for its light emitting surface.
  • the light emitted from the LED light source 20 is suppressed from entering the light guide plate 30 from a surface other than the first incident surface 33 or the second incident surface 34, and a bright spot or the like is generated on the emission surface 35. Can suppress fear.
  • the ratio of the minimum circumscribed circle radius R1 and the maximum inscribed circle radius r1 of the emission surface 35 in the state projected onto the virtual plane is 1.5 ⁇ r1 / R1 ⁇ 5 (2) If the shape of the light guide plate 30 is set so as to satisfy the above, it is preferable because the unevenness in illuminance becomes smaller.
  • one of the line segments L ⁇ b> 2 and L ⁇ b> 3 connecting between the end points of the first incident surface 33 and the second incident surface 34 in the state projected onto the virtual plane, and the geometrical shape of the exit surface 35 It is preferable that an angle ⁇ formed by the center of gravity M and the straight line L1 passing through the point B ′ farthest from the geometric center of gravity M of the exit surface 35 satisfies the following conditional expression (3). 40 degrees ⁇ ⁇ 90 degrees (3) More preferably, the following expression is satisfied. 60 degrees ⁇ ⁇ 90 degrees (3 ')
  • the material of the light guide plate 30 is preferably a highly transparent material such as resin or glass that transmits light.
  • the light guide plate 30 can be produced by various methods such as injection molding of a resin material, shaving of a glass material, forming a convex portion on a parallel plate, a so-called WLO manufacturing method, a glass molding, a so-called GM molding method, and the like. A method is conceivable.
  • the light extraction structure provided in the light guide plate 30 is not limited to the printing of the diffusing material, but includes the formation of an uneven surface by molding or the like.
  • the light source unit of the present invention is suitably used as an illumination device for interiors and exteriors of vehicles (private cars, trucks, trains), for example, in addition to indoor and outdoor lighting fixtures.
  • Tables 1 and 2 show data of the examples examined by the present inventors (including the outer shape of the exit surface projected onto the virtual plane).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

L'invention porte sur une unité de source de lumière, laquelle source peut, sur la base d'un nouveau concept, supprimer une irrégularité et permettre une émission de lumière uniforme même avec des formes de surface émettrice de lumière asymétriques à l'aide d'une source de lumière à diodes électroluminescentes. Par la formation d'une constitution telle qu'un segment de ligne (L1) qui relie le centre de gravité géométrique d'une surface de sortie d'une plaque de guidage de lumière et une partie de coin de la surface de sortie la plus éloignée vis-à-vis du centre de gravité géométrique croise un segment de ligne (L2) qui relie les deux parties d'extrémité d'une première surface d'incidence l'une à l'autre, une seconde surface d'incidence peut être orientée vers la partie de coin de la surface de sortie la plus éloignée vis-à-vis du centre de gravité géométrique (M). Par conséquent, une lumière de source de lumière à diodes électroluminescentes incidente à partir de la seconde surface d'incidence peut être guidée vers le voisinage de la partie de coin de la surface de sortie, et une lumière peut être émise sous une certaine intensité ; par conséquent, une émission de lumière de surface peut être réalisée avec une luminosité aussi uniforme que possible même si la surface de sortie a une forme asymétrique.
PCT/JP2013/051676 2012-02-14 2013-01-26 Unité de source de lumière WO2013121862A1 (fr)

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JP2012029256 2012-02-14
JP2012-029256 2012-02-14

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WO2013121862A1 true WO2013121862A1 (fr) 2013-08-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021136179A (ja) * 2020-02-27 2021-09-13 パナソニックＩｐマネジメント株式会社 照明器具
CN114604187A (zh) * 2020-12-29 2022-06-10 深圳市合瑞软件有限公司 汽车饰板组件及汽车

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JP2006019141A (ja) * 2004-07-01 2006-01-19 Nec Lcd Technologies Ltd バックライト及びそのバックライトを備えた液晶表示装置
JP2008123973A (ja) * 2006-11-16 2008-05-29 Mitsubishi Electric Corp 面状光源装置および液晶表示装置
JP2009128730A (ja) * 2007-11-27 2009-06-11 Sharp Corp 光学部材、光源装置および表示装置
WO2009110145A1 (fr) * 2008-03-07 2009-09-11 シャープ株式会社 Élément électroluminescent, dispositif d'éclairage et dispositif d'affichage à cristaux liquides
WO2011036596A1 (fr) * 2009-09-23 2011-03-31 Koninklijke Philips Electronics N.V. Guide de lumière, système d'éclairage, système de rétroéclairage et dispositif d'affichage

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Publication number Priority date Publication date Assignee Title
JP2006019141A (ja) * 2004-07-01 2006-01-19 Nec Lcd Technologies Ltd バックライト及びそのバックライトを備えた液晶表示装置
JP2008123973A (ja) * 2006-11-16 2008-05-29 Mitsubishi Electric Corp 面状光源装置および液晶表示装置
JP2009128730A (ja) * 2007-11-27 2009-06-11 Sharp Corp 光学部材、光源装置および表示装置
WO2009110145A1 (fr) * 2008-03-07 2009-09-11 シャープ株式会社 Élément électroluminescent, dispositif d'éclairage et dispositif d'affichage à cristaux liquides
WO2011036596A1 (fr) * 2009-09-23 2011-03-31 Koninklijke Philips Electronics N.V. Guide de lumière, système d'éclairage, système de rétroéclairage et dispositif d'affichage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021136179A (ja) * 2020-02-27 2021-09-13 パナソニックＩｐマネジメント株式会社 照明器具
JP7531123B2 (ja) 2020-02-27 2024-08-09 パナソニックＩｐマネジメント株式会社 照明器具
CN114604187A (zh) * 2020-12-29 2022-06-10 深圳市合瑞软件有限公司 汽车饰板组件及汽车
CN114604187B (zh) * 2020-12-29 2024-05-10 深圳市合瑞软件有限公司 汽车饰板组件及汽车

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