WO2013157550A1 - Élément panneau et dispositif optique - Google Patents

Élément panneau et dispositif optique Download PDF

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Publication number
WO2013157550A1
WO2013157550A1 PCT/JP2013/061308 JP2013061308W WO2013157550A1 WO 2013157550 A1 WO2013157550 A1 WO 2013157550A1 JP 2013061308 W JP2013061308 W JP 2013061308W WO 2013157550 A1 WO2013157550 A1 WO 2013157550A1
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WO
WIPO (PCT)
Prior art keywords
sheet
inclined surface
light control
light
panel member
Prior art date
Application number
PCT/JP2013/061308
Other languages
English (en)
Japanese (ja)
Inventor
後藤　正浩
関口　博
崇宏 八木
Original Assignee
大日本印刷株式会社
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
Priority claimed from JP2012093299A external-priority patent/JP5988136B2/ja
Priority claimed from JP2012189107A external-priority patent/JP6250269B2/ja
Priority claimed from JP2012288312A external-priority patent/JP6078939B2/ja
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Publication of WO2013157550A1 publication Critical patent/WO2013157550A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light

Definitions

  • the present invention relates to a panel member that changes the traveling direction of light.
  • JP2010-259406A a light control sheet that changes the traveling direction of light incident from one side and transmits the light to the other side is known.
  • JP2010-259406A discloses an example in which such a light control sheet is applied to a window.
  • the indoor wall material or the like reflects a part of the illumination light in a certain direction, or the indoor wall material or the like reflects a part of the illumination light to a specific position or region.
  • a desired illumination design can be realized by optimally distributing light illuminated from a specific direction. For example, if a part of light projected from indoor lighting equipment to various positions in the room is reflected by a wall material or the like, it can be used as light for illuminating a specific place in the room, for example, between the floors, from various directions. preferable.
  • energy efficiency can be substantially improved by directing at least a portion of the light from the light source projected from different directions to the various positions in the desired direction.
  • such illumination can be implement
  • the present invention has been made in consideration of the above points, and is a panel member that reflects at least a part of light incident along two or more directions in a desired direction, and this panel member. It is an object to provide an optical device including the above.
  • the first panel member according to the present invention comprises: A light control sheet having a first surface and a second surface disposed opposite to each other; A light reflecting sheet disposed opposite to the second surface of the light control sheet,
  • the second surface of the light control sheet includes a plurality of first inclined surfaces arranged in one direction parallel to the sheet surface of the light control sheet, and a plurality of second inclined surfaces arranged in the one direction.
  • the first inclined surface and the second inclined surface are alternately arranged in the one direction, In a cross section parallel to both the normal direction and the one direction of the light control sheet, the first inclined surface and the second inclined surface are inclined in the opposite direction with respect to the normal direction of the light control sheet. .
  • seat surface of the said light control sheet in the cross section parallel to both the normal line direction of the said light control sheet and the said one direction ⁇ a may vary so as to decrease on the light reflecting sheet side.
  • a line segment connecting both end portions of the first inclined surface is formed on the light control sheet.
  • the angle ⁇ ax made with respect to the sheet surface satisfies the following relationship: (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ ax ⁇ 45 °
  • an angle ⁇ bx formed by a line segment connecting both ends of the second inclined surface with respect to the sheet surface of the light control sheet is: The following relationship may be satisfied. (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ bx ⁇ cos ⁇ 1 (1 / n)
  • a gap is formed between the first inclined surface, the second inclined surface adjacent to the first inclined surface from one side in the one direction, and the reflective sheet. And In a cross section parallel to both the normal direction and the one direction of the light control sheet, the one first inclined surface, and a second inclined surface adjacent to the first inclined surface from the other side in the one direction. May approach toward the light reflecting sheet.
  • the magnitudes of the inclination angles may be different from each other.
  • the value of the inclination angle of one first inclined surface with respect to the sheet surface of the light control sheet in a cross section parallel to both the normal line direction and the one direction of the light control sheet. May be smaller than the value of the inclination angle of the second inclined surface adjacent to the first inclined surface from the other side in the one direction with respect to the sheet surface of the light control sheet.
  • the light control sheet is disposed between one first inclined surface and the second inclined surface adjacent to the first inclined surface from the other side in the one direction.
  • the light control sheet may further be connected to the reflection sheet via the flat surface.
  • each first inclined surface may extend in a direction not parallel to the one direction
  • each second inclined surface may extend in a direction not parallel to the one direction
  • the plurality of first inclined surfaces may be arranged to be parallel to each other, and the plurality of second inclined surfaces may be arranged to be parallel to each other.
  • the second surface may have irregularities.
  • the second panel member according to the present invention is: A light control sheet having a sheet-shaped main body, and a plurality of unit elements arranged along one direction on the main body, A light reflecting sheet disposed on the side of the light control sheet on which the unit elements are provided, Each unit element has a first inclined surface arranged on one side in one direction and a second inclined surface arranged on the other side in one direction, In a cross section parallel to both the normal direction and the one direction of the light control sheet, the first inclined surface and the second inclined surface are inclined in a direction opposite to the normal direction of the light control sheet. ing.
  • forms with respect to the sheet surface of the said light control sheet in the cross section parallel to both the normal line direction of the said light control sheet and the said one direction ⁇ a may vary so as to decrease on the light reflecting sheet side.
  • the angle which the said 2nd inclined surface makes with respect to the sheet surface of the said light control sheet in the cross section parallel to both the normal line direction of the said light control sheet and the said one direction ⁇ b may change so as to decrease on the light reflecting sheet side.
  • a line segment connecting both end portions of the first inclined surface is formed on the light control sheet.
  • the angle ⁇ ax made with respect to the sheet surface satisfies the following relationship: (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ ax ⁇ 45 °
  • an angle ⁇ bx formed by a line segment connecting both ends of the second inclined surface with respect to the sheet surface of the light control sheet is: The following relationship may be satisfied. (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ bx ⁇ cos ⁇ 1 (1 / n)
  • a gap is formed between the two unit elements adjacent in the one direction and the light reflecting sheet, and the normal direction of the light control sheet and the one direction are In a cross section parallel to both, the first inclined surface and the second inclined surface of one unit element may be close to each other toward the light reflecting sheet side.
  • the magnitude of the value of the inclination angle may be different from each other.
  • the first inclined surface of one unit element is inclined with respect to the sheet surface of the light control sheet in a cross section parallel to both the normal direction and the one direction of the light control sheet.
  • the magnitude of the angle value may be smaller than the magnitude of the value of the inclination angle of the unit element with respect to the sheet surface of the light control sheet.
  • the unit element further includes a flat surface disposed between the first inclined surface and the second inclined surface, and the light control sheet includes the flat surface. And may be connected to the reflection sheet.
  • each unit element may extend in a direction non-parallel to the one direction.
  • the plurality of unit elements may have the same shape.
  • the surface of the main body opposite to the side on which the unit element is provided may have irregularities.
  • the light control sheet and the light reflecting sheet may be bonded to each other.
  • a pattern may be formed on a surface of the light reflecting sheet that faces the light control sheet.
  • An optical device comprises: Any of the first and second panel members according to the invention described above; A light source that projects light from the light control sheet side to the panel member.
  • the light source may project light onto the panel member from a direction inclined from the one side to the other side in the one direction toward the panel member.
  • At least a part of light incident along two or more directions can be reflected in a desired direction.
  • FIG. 1 is a side sectional view illustrating an optical device and a panel member for explaining an embodiment according to the present invention.
  • FIG. 2 is a partially enlarged view of the panel member of FIG. 1 and is a view for explaining the operation of the optical device and the panel member.
  • FIG. 3 is a perspective view showing a light control sheet of the panel member of FIG.
  • FIG. 4 is a partially enlarged view of the panel member of FIG. 1 and is a view for explaining the operation of the optical device and the panel member.
  • FIG. 5 is a partially enlarged view of the panel member of FIG. 1 and is a view for explaining the operation of the optical device and the panel member.
  • FIG. 6 is a partially enlarged view of the panel member of FIG. 1 and is a view for explaining the operation of the optical device and the panel member.
  • FIG. 7 is a view corresponding to FIG. 2 and illustrating a modified example of the panel member.
  • FIGS. 1, 2 and 4 to 6 are longitudinal sectional views showing the optical device and the panel member.
  • FIG. 3 is a perspective view showing an optical sheet of the panel member.
  • 1 and 2 and FIGS. 4 to 6 are cross-sectional views taken along line XX in FIG.
  • the optical device 10 and the panel member 20 according to the present embodiment described below are used as, for example, a lighting device.
  • the panel member 20 is used as a wall material and changes the traveling direction of light from the light source 15.
  • the panel member 20 can reflect at least a part of light incident along two or more directions in a desired direction, as will be described later.
  • the optical device 10 as the illumination device causes a part of light projected from the light source 15 to various positions of the panel member 20 to travel toward a predetermined position by reflection on the panel member 20. For example, if a part of the light source light proceeds toward a specific region or position due to reflection at each position of the panel member 20, it is desired without increasing the total light amount projected from the light source 15. Illumination with light distribution can be realized. That is, according to the optical device 10 and the panel member 20, it is possible to realize energy saving by effectively using the light from the light source 15.
  • the optical device 10 and the panel member 20 are used for applications other than the lighting device, for example, a ceiling material that can emit light, a floor material, and a display device for displaying information. It is also possible to use it.
  • the optical device 10 when used as a display device, the light source light that is incident on each position of the panel member 20 from different incident directions can be directed by the panel member 20 toward the observer of the display device. Very preferred. In this case, the brightness of the image sensed by the observer can be effectively improved by increasing the output of the light source, in other words, by effectively using the light source light.
  • a “sheet” is a concept including a member that can also be called a film or a plate.
  • the “light control sheet” includes members called “light control film” and “light control plate”, and the “light reflection sheet” includes “light reflection film” and “light reflection plate”. And so on.
  • sheet surface film surface, plate surface
  • sheet surface is the same as the planar direction of the target sheet-like member when the target sheet-like member is viewed as a whole and globally. It refers to the surface to be used.
  • the panel surface of the panel member 20 the sheet surface of the light reflecting sheet 30 described later, the sheet surface of the light control sheet 40 described later, the first surface 41 of the light control sheet 40, and the main body 50.
  • the sheet surface, the first surface 51 of the main body 50 and the second surface 52 of the main body 50 are parallel to each other.
  • the normal direction of the panel member refers to the normal direction to the panel surface of the panel member 20. Therefore, in the embodiment described below, the normal direction of the panel member 20 is the normal direction of the light reflecting sheet 30 (the normal direction to the sheet surface of the light reflecting sheet 30), and the method of the light control sheet 40. Line direction (normal direction to the sheet surface of the light control sheet 40), normal direction of the first surface 41 of the light control sheet 40, normal direction of the main body 50, and normal of the first surface 51 of the main body 50 The direction and the normal direction of the second surface 52 of the main body 50 are parallel to each other.
  • the optical device 10 includes a panel member (panel member) 20 and a light source 15 that projects light onto the panel member 20.
  • the panel member 20 includes a light control sheet 40 having a first surface 41 and a second surface 42 disposed to face each other, and a light reflection sheet 30 disposed to face the second surface 42 of the light control sheet 40. ,have.
  • the panel member 20 is provided as a wall material in a room of a building, and is arranged so that the panel surface of the panel member 20 extends in the vertical direction.
  • the light source 15 is attached to the ceiling in the room of the building. For this reason, as shown in FIG. 1, the light projected from the light source 15 is incident on each position of the panel member 20 from a direction inclined to one side with respect to the normal direction of the panel member 20. become. However, the traveling direction of light incident on each position of the panel member 20 changes according to the distance from the light source 15 and is not constant.
  • the light source 15 of the optical device 10 various light sources, for example, a fluorescent lamp such as a linear cold cathode tube, a spot LED (light emitting diode), an incandescent light bulb, and the like can be used.
  • the panel member 20 includes the light control sheet 40 having the first surface 41 and the second surface 42 disposed to face each other, and the light disposed to face the second surface 42 of the light control sheet 40. And a reflection sheet 30.
  • the light reflecting sheet 30 is disposed on the opposite side of the light source 15 and the indoor space where the observer is located around the light control sheet 40 in the normal direction nd of the panel member 20. Therefore, as shown in FIG. 2, the light L ⁇ b> 24 and L ⁇ b> 25 from the light source 15 passes through the light control sheet 40 and enters the light reflecting sheet 30.
  • the light reflecting sheet 30 is connected to the light control sheet 40.
  • the connection here does not require the light reflecting sheet 30 to be joined to the light control sheet 40, and the light reflecting sheet 30 may be in contact with the light control sheet 40 only.
  • the light reflecting sheet 30 is a sheet-like member having a reflecting function of reflecting incident light.
  • the reflection characteristics of the light reflecting sheet 30 may be diffuse reflection or specular reflection.
  • the diffusion characteristic may be isotropic diffusion or directional diffusion. Therefore, various reflection sheets can be used as the light reflection sheet 30, but in the present embodiment, a white resin sheet having an isotropic diffuse reflection function is used.
  • a pattern may be formed on the surface of the light reflecting sheet 30 that faces the light control sheet 40.
  • a pattern formed on the light reflecting sheet 30 a pattern similar to the other wall portion of the room in which the panel member 20 is provided, and as a specific example, a woodgrain pattern can be employed.
  • a picture-like design may be employed. Note that the pattern used in the present specification is not limited to the one indicating specific information or meaning the specific information, but is particularly limited to a figure, a character, a pattern, a pattern, a symbol, a pattern, a mark, a color, and the like. Including widely without.
  • the main body 50 is a layer that supports the unit element 60, and is appropriately configured so as to have appropriate strength and appropriate transparency.
  • the main body 50 has a first surface 51 and a second surface 52 as a pair of main surfaces parallel to each other.
  • the unit element 60 is provided on the second surface 52 of the main body 50.
  • the first surface 51 of the main body 50 forms the first surface 41 of the light control sheet 40.
  • the first surface 41 of the light control sheet 40 (the first surface 51 of the main body 50) is a surface facing the room side where the observer is present, and the incident surface on which the light projected from the light source 15 enters the panel member 20.
  • the first surface 41 of the light control sheet 40 (the first surface 51 of the main body 50) is also used as an emission surface when changing the traveling direction of the light from the light source 15 and emitting the light from the panel member 20. Function.
  • the first surface 51 of the main body 50 (the first surface 41 of the light control sheet 40) has a light diffusing function as a matte treatment. You may be comprised as a rough surface or the mat
  • the thickness of the main body 50 can be 20 ⁇ m to 200 ⁇ m, and such a main body 50 can be configured to include, for example, a biaxially stretched polyethylene terephthalate (PET) film.
  • PET polyethylene terephthalate
  • the biaxially stretched polyethylene terephthalate film is suitable for application as the main body 50 in that it has appropriate transparency and durability against ultraviolet irradiation treatment, heat treatment, and the like.
  • each unit element 60 extends linearly in a direction non-parallel to the first direction d1.
  • the plurality of unit elements 60 are arranged in the first direction d1 with a constant pitch without any gaps.
  • each unit element 60 has a second direction d2 extending perpendicularly to the first direction d1 and parallel to the panel surface of the panel member 20 (the sheet surface of the light control sheet 40). Along the straight line.
  • each unit element 60 is formed in a columnar shape and has the same cross-sectional shape along its longitudinal direction. Further, in the present embodiment, the plurality of unit elements 60 are configured identically.
  • Each unit element 60 arranged in the first direction d1 includes a first inclined surface 61 disposed on one side in the first direction d1, a second inclined surface 62 disposed on the other side in the first direction d1, have.
  • the first inclined surface 61 and the second inclined surface 62 of each unit element 60 form the second surface 42 of the light control sheet 40. Therefore, the second surface 42 of the light control sheet 40 has the first inclined surfaces 61 and the second inclined surfaces 62 that are alternately arranged in the first direction d1.
  • the plurality of first inclined surfaces 61 are arranged so as to be parallel to each other, and the plurality of second inclined surfaces 62 are arranged so as to be parallel to each other.
  • the first inclined surface 61 and the second inclined surface 62 are inclined in the opposite direction with respect to the normal direction nd to the sheet surface of the light control sheet 40. More specifically, in the main cut surface of the light control sheet, the first inclined surface 61 is inclined from one side to the other side in the first direction d1 from the main body portion 50 side toward the light reflecting sheet 30 side. And the 2nd inclined surface 62 inclines from the other side in the 1st direction d1 to the one side toward the light reflective sheet 30 side from the main-body part 50 side.
  • the first inclined surface 61 and the second inclined surface 62 of one unit element 60 approach from the main body 50 side toward the light reflecting sheet 30 side.
  • “approaching” means that the first inclined surface 61 located on one side in the first direction d1 and the second inclined surface 62 located on the other side in the first direction d1 are panels. It is not necessary to keep approaching constantly toward the light reflecting sheet 30 along the normal direction nd of the member 20, and the interval may be constant in part. That is, “approaching” means that the first inclined surface 61 located on one side and the second inclined surface 62 located on the other side are not separated toward the light reflecting sheet 30 side. It means that.
  • the first inclined surface 61 is not a flat surface but a bent surface. Therefore, the inclination angle ⁇ a formed by the first inclined surface 61 with respect to the sheet surface of the light control sheet 40 in the main cut surface of the light control sheet (that is, the inclination of the first inclined surface 61 with respect to the sheet surface of the light control sheet 40).
  • the angle ⁇ a) is not constant and changes in the one first inclined surface 61.
  • the effect described later is that the inclination angle ⁇ a of the first inclined surface 61 changes so as to be smaller on the light reflecting sheet 30 side than on the main body part 50 side. It is preferable when playing.
  • the inclination angle ⁇ a of the first inclined surface 61 changes so as to be smaller on the other side than on one side in the first direction d1.
  • the first inclined surface 61 is formed as a bent surface composed of two flat surfaces. As shown in FIG. 5, the first inclined surface 61 is located on one side in the first direction d1 and is in the first direction on the base end side first inclined surface 61a located on the main body portion 50 side in the normal direction. and a front-end-side first inclined surface 61b positioned on the other side in d1 and positioned on the light reflecting sheet 30 side in the normal direction.
  • the inclination angle ⁇ a1 at the base-end-side first inclined surface 61a is larger than the inclination angle ⁇ a2 at the distal-end-side first inclined surface 61b.
  • the first inclined surface 61 is not limited to the example shown in FIG. 5, and may be formed as a curved surface, may be formed as a combination of a flat surface and a curved surface, or may be formed as a curved surface and a folded surface. And may be formed as a combination. That is, the inclination angle ⁇ a may be changed stepwise as shown in FIG. 5, or may be changed continuously at least partially as shown in FIG. Note that, in the main cut surface of the light control sheet, the inclination angle in the curved portion of the first inclined surface 61 is, as shown in FIG. 7, the tangent TL to the portion of the first inclined surface 61 is An angle formed with respect to the sheet surface of the light control sheet 40 is used.
  • the second inclined surface 62 is formed not as a flat surface but as a folded surface. Therefore, the inclination angle ⁇ b formed by the second inclined surface 62 with respect to the sheet surface of the light control sheet 40 in the main cut surface of the light control sheet (that is, the inclination of the second inclined surface 62 with respect to the sheet surface of the light control sheet 40).
  • the angle ⁇ b) is not constant and changes within the one second inclined surface 62.
  • the inclination angle ⁇ b of the second inclined surface 62 changes so as to be smaller on one side than on the other side in the first direction d1.
  • the second inclined surface 62 is formed as a bent surface composed of two flat surfaces. As shown in FIG. 5, the second inclined surface 62 is located on the other side in the first direction d1 and is located on the side of the main body 50 in the normal direction, and the first direction second inclined surface 62a. and a tip side second inclined surface 62b located on one side in d1 and located on the light reflecting sheet 30 side in the normal direction.
  • the inclination angle ⁇ b1 at the base-end-side second inclined surface 62b is larger than the inclination angle ⁇ b2 at the distal-end-side second inclined surface 62b.
  • the 2nd inclined surface 62 may be formed as a curved surface similarly to the 1st inclined surface 61, may be formed as a combination of a flat surface and a curved surface, and a curved surface and a bending surface may be formed. It may be formed as a combination. That is, the inclination angle ⁇ b may be changed stepwise as shown in FIG. 5, or may be changed continuously at least partially as shown in FIG. Note that, in the main cut surface of the light control sheet, the inclination angle in the curved portion of the second inclined surface 62 is tangent TL to the relevant portion of the second inclined surface 62 in the same manner as the first inclined surface 61. Is an angle formed with respect to the sheet surface of the light control sheet 40.
  • the magnitude of the value of the inclination angle ⁇ a of the first inclined surface 61 with respect to the sheet surface of the light control sheet 40 (that is, the first inclined surface 61 with respect to the sheet surface of the light control sheet).
  • the absolute value of the inclination angle ⁇ a is the magnitude of the value of the inclination angle ⁇ b of the second inclined surface 62 with respect to the sheet surface of the light control sheet (that is, the inclination angle of the second inclined surface 62 with respect to the sheet surface of the light control sheet). the absolute value of ⁇ b).
  • the magnitude of the value of the inclination angle ⁇ a of the first inclined surface 61 with respect to the sheet surface of the light control sheet 40 is the inclination angle of the second inclined surface 62 with respect to the sheet surface of the light control sheet. It is smaller than the value of ⁇ b.
  • the value of the inclination angle ⁇ a changes in one first inclined surface 61
  • the value of the inclination angle ⁇ b in one second inclined surface 62 changes. Changes.
  • the inclination angle ⁇ a at all positions in the first inclined surface 61 is smaller than the value of the inclination angle ⁇ b at any position in the second inclined surface 62. .
  • an angle ⁇ a formed by the first inclined surface 61 at the main cutting surface of the light control sheet with respect to the sheet surface of the light control sheet is the same as that of the first inclined surface 61.
  • the following condition (a) is satisfied, and an angle ⁇ b formed by the second inclined surface 62 at the main cutting surface of the light control sheet with respect to the sheet surface of the light control sheet is one second inclined surface. It is preferable that at least a part of 62 satisfies the following condition (b).
  • an angle ⁇ ax formed by a line segment 66 connecting both ends of the first inclined surface 61 with respect to the sheet surface of the light control sheet on the main cut surface of the light control sheet satisfies the condition (a)
  • an angle ⁇ bx formed by a line segment 67 connecting both end portions of the second inclined surface 62 with respect to the sheet surface of the light control sheet on the main cut surface of the control sheet satisfies the condition (b). That is, the condition (a) is satisfied when the angle ⁇ ax formed by the line segment 66 with respect to the sheet surface of the light control sheet on the main cut surface of the light control sheet is the value of ⁇ a in the condition (a), and the light control sheet is satisfied.
  • the condition (b) is satisfied, with the angle ⁇ bx formed by the line segment 67 with respect to the sheet surface of the light control sheet at the main cutting plane, as the value of ⁇ b in the condition (b). Furthermore, the inclination angles ⁇ a at all positions in the first inclined surface 61 satisfy the condition (a), and the inclination angles ⁇ b at all positions in the second inclined surface 62 satisfy the condition (b). Even more preferred. (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ a ⁇ 45 ° (a) (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ b ⁇ cos ⁇ 1 (1 / n) ...
  • angles ⁇ a, ⁇ b, ⁇ ax, ⁇ bx formed by the first inclined surface 61, the second inclined surface 62, the line segment 66, and the line segment 67 with respect to the sheet surface of the light control sheet are the light control sheet.
  • the smaller one of the two angles formed by the first inclined surface 61, the second inclined surface 62, the line segment 66 or the line segment 67, and the sheet surface of the light control sheet It points to that. Therefore, the angles ⁇ a and ⁇ b take values of 0 ° or more and 90 ° or less.
  • “n” is the refractive index of the unit element 60.
  • each unit element 60 further has a flat surface 63 disposed between the first inclined surface 61 and the second inclined surface 62.
  • the flat surface 63 connects the first inclined surface 61 and the second inclined surface 62.
  • the second surface 42 of the light control sheet 40 includes the first inclined surfaces 61 of the unit elements 60 arranged without gaps on the second surface 52 of the main body 50.
  • the second inclined surface 62 and the flat surface 63 are formed.
  • the flat surface 63 is parallel to the surface of the light reflecting sheet 30 on the light control sheet 40 side.
  • the light control sheet 40 is connected to the reflection sheet 30 via the flat surface 63.
  • a gap 70 is formed between the two unit elements 60 adjacent to each other in the first direction d1 and the light reflecting sheet 30. That is, the first inclined surface 61 forms an interface between the light control sheet 40 and the gap 70, and the second inclined surface 62 forms an interface between the light control sheet 40 and the gap 70. As will be described later, the first inclined surface 61 and the second inclined surface 62 function as reflecting surfaces for at least part of incident light.
  • the dimensions of the light control sheet 40 having the above-described configuration can be set as follows.
  • the length W1 (see FIG. 2) of the first inclined surface 61 along the sheet surface of the light control sheet 40 is set to 0.1 mm or more and 1.0 mm or less.
  • the length W2 (see FIG. 2) of the second inclined surface 62 along the sheet surface is set to 0.002 mm or more and 0.3 mm or less, and the length W3 of the flat surface 63 along the sheet surface of the light control sheet 40 (FIG. 2).
  • Reference can be 0.02 mm or more and 0.5 mm or less.
  • size of the value of inclination-angle (theta) a (refer FIG.
  • the 1st inclined surface 61 with respect to the sheet surface of a light control sheet can be made into an angle of 23 degrees or more and 30 degrees or less.
  • the value of the inclination angle ⁇ b (see FIG. 2) of the second inclined surface 62 with respect to the sheet surface of the light control sheet can be set to an angle of 35 ° or more and 50 ° or less, and more preferably, the sheet of the light control sheet.
  • the magnitude of the value of the inclination angle ⁇ b (see FIG. 2) of the second inclined surface 62 with respect to the surface can be set to an angle of 40 ° to 45 °.
  • the thickness of the main body 50 can be set to 0.02 mm or more and 1.0 mm or less.
  • the light control sheet 40 as described above can be produced by shaping the unit element 60 on a base material.
  • a base material a film made of a transparent resin containing at least one of acrylic, styrene, polycarbonate, polyethylene terephthalate, acrylonitrile and the like as a main component can be used.
  • Epoxy acrylate and urethane acrylate-based reactive resins (such as ionizing radiation curable resins) can be suitably used as the material to be molded on the substrate.
  • the main body 50 may be formed only from the base material, or may be formed from the base material and a resin portion molded in a sheet shape on the base material. It may be.
  • the panel member 20 is arranged such that the first direction d1 that is the arrangement direction of the unit elements 60 is parallel to the vertical direction, and one side in the first direction d1 is the vertical direction. The other side in the first direction d1 is located below the vertical direction. Accordingly, the lights L11 to L13 and L21 to L25 projected from the light source 15 enter the respective positions of the panel member 20 from the direction inclined from one side to the other side in the first direction d1 toward the panel member 20.
  • the light L21 to L25 incident on the panel member 20 is incident from the first surface 51 side to the main body 50 forming the outermost surface of the panel member 20.
  • the first surface 41 of the light control sheet 40 including the first surface 51 on the main body portion 50 includes irregularities, the incident light to the panel member 20 is to some extent. Spread.
  • the emitted light from the panel member 20 is also diffused to some extent.
  • the unevenness of the first surface 41 of the light control sheet 40 (the first surface 51 of the main body 50) is intended to be frosted, and since diffusion is transmission diffusion, the degree of diffusion is low.
  • the lights L21 to L25 incident on the light control sheet 40 of the panel member 20 travel from the main body 50 to the unit element 60. As shown in FIG. 2, the lights L 21 to L 25 traveling through the unit element 60 are then incident on the second surface 42 of the light control sheet 40.
  • the second surface 42 includes a first inclined surface 61, a second inclined surface 62, and a flat surface 63 that are inclined with respect to each other. Then, depending on which surface 61, 62, 63 of the second surface 42 the light from the light source 15 enters, the optical action exerted from the second surface 42 thereafter, and the resulting The direction of travel will be different.
  • the light L25 incident on the flat surface 63 is diffusely reflected on the light reflecting sheet 30 connected to the flat surface 63.
  • the light L25 incident on the flat surface 63 is diffused in an angle region corresponding to the degree of diffusivity of the light reflecting sheet 30, and proceeds toward the room where the panel member 20 is installed.
  • the light reflecting sheet 30 When the light reflecting sheet 30 has a strong diffusing capacity, the light L25a diffused at a wide angle by the light reflecting sheet 30 enters the first inclined surface 61 and the second inclined surface 62.
  • the first inclined surface 61 and the second inclined surface 62 located on both sides of the flat surface 63 gradually spread in the first direction d1 from the light reflecting sheet 30 side toward the main body portion 50 side. Therefore, the light L25a diffused at a wide angle by the light reflecting sheet 30 has the first inclined surface 61 or the second inclined surface 62 so that the angle formed by the traveling direction with respect to the normal direction nd of the panel member 20 becomes small. Therefore, the total reflection is caused by the difference in refractive index between the gap 70 and the unit element 60.
  • the diffusibility of the light reflecting sheet 30 is set so strong that the directivity due to the incident direction of the incident light is sufficiently lost, the light L25 incident on the flat surface 63 is It is possible to effectively prevent the panel member 20 from proceeding in a direction greatly inclined with respect to the normal direction nd of the panel member 20. That is, it is possible to suppress the light from the light source 15 from being emitted in a direction in which it cannot be used effectively, thereby achieving effective use of the light from the light source 15 and realizing energy saving.
  • the traveling direction of the light L ⁇ b> 24 incident on the main body 50 of the light control sheet 40 from the light source 15 is opposite to the second inclined surface 62 with respect to the normal direction nd of the panel member 20. It is inclined. That is, the traveling direction of the light L24 that enters the light control sheet 40 from the light source 15 and travels through the main body 50 is different from one side in the first direction d1 toward the light reflecting sheet 30 from the main body 50 side. Tilt to the side.
  • the second inclined surface 62 is inclined from the other side in the first direction d1 to the one side from the main body 50 side to the light reflecting sheet 30 side. Yes. Accordingly, there is a tendency that the incident angle of the light L24 traveling in the main body 50 to the second inclined surface 62 becomes small.
  • the light L24 that enters the light control sheet 40 from the light source 15 and travels through the main body 50 is transmitted through the second inclined surface 62 with high transmittance without being totally reflected by the second inclined surface 62.
  • the light L24 incident on the second inclined surface 62 is diffusely reflected by the light reflecting sheet 30 and diffused in an angle range corresponding to the degree of diffusing power of the light reflecting sheet 30, and the panel member 20 is installed. Proceed toward the room.
  • the traveling directions of the light beams L 21 to L 23 incident from the light source 15 to the main body portion 50 of the light control sheet 40 are the same as those of the first inclined surface 61 with respect to the normal direction nd of the panel member 20. Inclined to the side. That is, in the main cut surface of the light control sheet 40, the first inclined surface 61 is the same as the traveling direction of the light L21 to L23 that enters the light control sheet 40 from the light source 15 and travels through the main body 50. Inclined from one side to the other side in the first direction d1 from the first side toward the light reflecting sheet 30 side.
  • the incident angles of the lights L21 to L21 that enter the light control sheet 40 from the light source 15 and travel through the main body 50 to the first inclined surface 61 become very large and are totally reflected by the first inclined surface 61. .
  • the light totally reflected by the first inclined surface 61 is then directed to the second inclined surface 62 and further totally reflected by the second inclined surface 62, so that the panel member 20 is installed. Proceed toward the room.
  • the light L21 to L23 that enters the main body 50 of the light control sheet 40 from the light source 15 and travels toward the first inclined surface 61 is reflected by the first inclined surface 61 and the second inclined surface 62 and then the panel member.
  • the light is emitted from 20, and the room is illuminated.
  • the inclination angles ⁇ a and ⁇ b of the first inclined surface 61 and the second inclined surface 62 are such that the lights L21 to L23 incident on the light control sheet 40 from the light source 15 and totally reflected by the first inclined surface 61 are then second inclined. It is designed such that it enters the surface 62 and is totally reflected by the second inclined surface 62, and proceeds from the panel member 20 into the room.
  • the inclination angle ⁇ a of at least a part of the first inclined surface 61 is preferably set, and more preferably, the inclination angle ⁇ ax of the line segment 66 connecting both end portions of the first inclined surface 61 is more preferably set.
  • the inclination angle ⁇ a in all parts of the first inclined surface 61 satisfies the condition (a), and preferably the inclination angle ⁇ b in at least a part of the second inclined surface 62 is more preferably that of the second inclined surface 62.
  • the light control sheet 40 is designed so that the inclination angle ⁇ bx of the line segment 67 connecting both ends satisfies the condition (b), and more preferably, the inclination angle ⁇ b in all parts of the second inclined surface 62 satisfies the condition (b). Is preferred. (Cos ⁇ 1 (1 / n)) / 2 ⁇ ⁇ a (or ⁇ ax) ⁇ 45 ° ...
  • the light projected from the light source 15 is directed toward the panel member 20 from the direction inclined from one side to the other side in the first direction d ⁇ b> 1 to each position of the panel member 20.
  • the incident angle of the light incident on the light control sheet 40 of the light incident on the panel member 20 is greater than 0 ° and smaller than 90 °.
  • the inclination angle ⁇ a of the first inclined surface 61 to the sheet surface of the light control sheet 40 can be designed to satisfy the following equation (a1).
  • equation (a1) light incident on the light control sheet 40 at any incident angle of 0 ° to 90 ° is reflected by the first inclined surface 61 and parallel to the sheet surface of the light control sheet 40.
  • the above condition (a) can be obtained by summing up the equation (a1) with respect to the angle ⁇ a. That is, when the condition (a) is satisfied, any light of the light incident from the light source 15 toward the panel member 20 from the direction inclined from one side to the other side in the first direction d1 is the first inclined surface 61. , And proceeds in a direction parallel to the sheet surface of the light control sheet 40, so that it can enter the second inclined surface 62.
  • an angle ⁇ ax formed by a line segment 66 connecting both ends of the first inclined surface 61 with respect to the sheet surface of the light control sheet is an inclination angle ⁇ a in the first inclined surface 61.
  • This is a representative value representing the size of. Therefore, when the inclination angle ⁇ ax of the line segment 66 is ⁇ a in the condition (a) and the condition (a) is satisfied, the light advances from the light source 15 in a direction inclined from one side to the other side in the first direction d1. The light incident toward the panel member 20 tends to enter the second inclined surface 62.
  • the traveling directions of the light beams L21 to L23 that have entered the main body 50 of the light control sheet 40 from the light source 15 are the first inclined surfaces 61 with respect to the normal direction nd of the panel member 20. Inclined on the same side.
  • the light control sheet 40 is produced using the resin material normally used in an optical use or a building material use, when Formula (a1) is satisfy
  • the reflection on the inclined surface 61 is total reflection.
  • the condition for the light traveling in the direction parallel to the sheet surface of the light control sheet 40 to be totally reflected by the second inclined surface 62 is expressed by Expression (b1). Further, the light that travels in the direction parallel to the sheet surface of the light control sheet 40 and enters the second inclined surface 62 and then totally reflected by the second inclined surface 62 is totally reflected by the first surface 51 of the main body 50.
  • the condition not to be performed is represented by the formula (b2).
  • the first surface 51 of the main body 50 is assumed to be a smooth surface. Further, as shown in FIG.
  • ⁇ i in the formula (b2) proceeds in a direction parallel to the sheet surface of the light control sheet 40 and enters the second inclined surface 62, and then the second inclined surface 62. This is the incident angle when the light totally reflected at 1 is incident on the first surface 51 of the main body 50 (the first surface 41 of the light control sheet 40).
  • n ⁇ cos ( ⁇ b) ⁇ 1 ⁇ sin 90 ° (b1) 1 ⁇ sin 90 ° ⁇ n ⁇ sin ( ⁇ i) n ⁇ cos (2 ⁇ ⁇ b) ... (b2)
  • an angle ⁇ bx formed by a line segment 67 connecting both ends of the second inclined surface 62 with respect to the sheet surface of the light control sheet is an inclination angle ⁇ b in the second inclined surface 62.
  • This is a representative value representing the size of. Therefore, when the inclination angle ⁇ bx of the line segment 67 is ⁇ b in the condition (b) and the condition (b) is satisfied, the overall trend proceeds in a direction parallel to the sheet surface of the light control sheet 40.
  • the light incident on the second inclined surface 62 is totally reflected by the second inclined surface 62 and then passes through the first surface 51 of the main body 50 without being totally reflected by the first surface 51 of the main body 50. Thus, there is a tendency to proceed toward the room where the panel member 20 is installed.
  • the incident direction of the light from the light source 15 incident on the panel member 20 changes according to the incident position on the panel member 20. That is, the angle ⁇ x formed by the incident directions of the light beams L11 to L13 incident on the respective positions of the panel member 40 with respect to the normal direction nd of the panel member 20, that is, the so-called incident angle ⁇ x is an incident position on the light source 15 and the panel member 20. Depending on the distance along the first direction d1. Specifically, as shown in FIG. 1, as the incident position on the panel member 20 moves away from the light source 15 along the first direction d1, the light projected from the light source 15 enters the panel member 20. The angle ⁇ x increases.
  • the light emission direction from the panel member 20 toward the room is substantially the same at each position on the panel member 20.
  • an angle inclined to one side in the first direction d1 with respect to the normal direction nd of the panel member 20 is set to a positive value, and in the first direction with respect to the normal direction nd of the panel member 20 Assuming that the angle inclined to the other side is a negative value, if the value of the incident angle ⁇ x is large, the emission angle (the emission directions of the light beams L11 to L13 and L21 to L23 emitted from each position of the panel member 40 are the same as those of the panel member 20). The value of the angle ⁇ y with respect to the normal direction nd is also increased.
  • the light L11 to L13 and L21 to L23 reflected by the first inclined surface 61 and the second inclined surface 62 are not limited to the specific region in the room regardless of the position of the panel member 20 in the first direction d1.
  • the light is emitted toward the center of the room, for example.
  • the surface 61 and the second inclined surface 62 can reflect in a desired direction. Specifically, the light from the light source 15 can be emitted in a direction that can effectively contribute to an increase in the brightness of the room by reflection on the first inclined surface 61 and the second inclined surface 62. Thereby, the effective use of the light from the light source 15 can be achieved, and energy saving can be realized.
  • the ratio of the light which goes to the 1st inclined surface 61 after that among the lights from the light source 15 which inject into each position of the panel member 20 along various directions is the 1st along the sheet surface of the light control sheet 40. It can be increased or decreased by adjusting the width W1 of the first inclined surface 61, the width W2 of the second inclined surface 62, and the width W3 of the flat surface 63. As an example, by increasing the ratio of the width W1 of the first inclined surface 61 along the sheet surface of the light control sheet 40 and / or the width W3 of the flat surface 63 along the sheet surface of the light control sheet 40. By decreasing the ratio, it is possible to increase the ratio of the light toward the first inclined surface 61 after entering the panel member 20.
  • the ratio of the width W1 of the first inclined surface 61 along the sheet surface of the light control sheet 40 and / or the ratio of the width W3 of the flat surface 63 along the sheet surface of the light control sheet 40 can be decreased.
  • the angle ⁇ a formed by the first inclined surface 61 with respect to the sheet surface of the light control sheet 40 in the main cut surface of the light control sheet is the one first inclined surface. In the plane 61, it is not constant. As is well shown in FIG. 5, the inclination angle ⁇ a of the first inclined surface 61 changes so as to be smaller on the light reflecting sheet 30 side than on the main body part 50 side.
  • FIG. 5 shows the optical paths of the lights L51 and L52 that travel in the same direction and then enter the portions of the first inclined surface 61 at different inclination angles ⁇ a.
  • the light L51 incident on the proximal-side first inclined surface 61a having the larger inclination angle ⁇ a1 is the distal side of the smaller inclination angle ⁇ a2.
  • the course thereof is not greatly changed.
  • the light L52 that has entered the tip-side first inclined surface 61b with a smaller inclination angle ⁇ a2 has a relatively large path changed to the main body portion 50 side, that is, the main body portion that becomes the light exit surface of the panel member 20 It becomes easy to go to the 50th 1st surface 51 (1st surface 41 of the light control sheet 40).
  • the distal-end-side first inclined surface 61b having a smaller inclination angle ⁇ a2 is located on the light reflecting sheet 30 side in the normal direction nd of the light control sheet 40, and the proximal-side first inclined surface having a larger inclination angle ⁇ a1. If 61 a is positioned on the main body 50 side in the normal direction nd of the light control sheet 40, the light reflected by the first inclined surface 61 is likely to enter the second inclined surface 62 thereafter. Become.
  • the inclination angle ⁇ a of the first inclined surface 61 changes to be smaller on the other side than the one side in the first direction d1
  • the light reflected by the first inclined surface 61 is then It is possible to effectively prevent the light from entering the first inclined surface 62 and proceeding to the first surface 51 (the first surface 41 of the light control sheet 40) of the main body 50 serving as the light exit surface of the panel member 20.
  • the light source 15 to the panel member More of the light incident on the 20 light control sheets 40 is first reflected by the first inclined surface 61, then reflected by the second inclined surface 62, and then emitted from the panel member 20.
  • the light incident along the two or more directions is directed in a desired direction, more specifically, the light incident on each position of the panel member 20 from the light source 15 at the desired position.
  • the incident angle ⁇ x of the light from the light source 15 incident on the region on the one side of the panel member 20 in the first direction d1 is reduced, while the other side of the panel member 20 in the first direction d1.
  • the incident angle ⁇ x of light from 15 entering the region becomes larger.
  • the incident angle of light from the light source 15 that enters the unit element 60 is not constant, It varies within a range.
  • this variation becomes large, the above-mentioned effect of directing light emitted from one first inclined surface 61 in a desired direction is weakened. That is, the above-described action of directing light incident on each position of the panel member 20 from the light source 15 to a desired position is weakened.
  • the angle ⁇ b formed by the second inclined surface 62 with respect to the sheet surface of the light control sheet 40 in the main cut surface of the light control sheet is within the one second inclined surface 62.
  • the inclination angle ⁇ b of the second inclined surface 62 changes so as to be smaller on the light reflecting sheet 30 side than on the main body part 50 side. According to such a configuration, the function of the panel member 20 such as directing light incident on each position of the panel member 20 from the light source 15 to a desired position is more effectively exhibited.
  • an angle inclined to one side in the first direction d1 with respect to the normal direction nd of the panel member 20 is a positive value, and in the first direction with respect to the normal direction nd of the panel member 20 If the angle that inclines to the other side is a negative value, the larger the value of the incident angle ⁇ x, the larger the value of the outgoing angle ⁇ y.
  • the function of narrowing the emission direction of the emitted light from the unit element 60 (deflection function, condensing light)
  • the emission angle ⁇ y can be obtained without greatly changing the optical path of the light L62 having a large incident angle ⁇ x2 that tends to increase the emission angle due to reflection on the second inclined surface 62. It is better to greatly change the optical path of the light L61 having a small incident angle ⁇ x2 that tends to decrease.
  • the second inclined surface 62 that weakens the optical path changing function in the region on the light reflecting sheet 30 side of the second inclined surface 62 where the light L62 having a large incident angle ⁇ x2 is likely to be incident, and the light L61 having a small incident angle ⁇ x1 is likely to be incident. It is preferable to strengthen the optical path changing function in the region on the main body 50 side.
  • the incident angle ⁇ x of light incident on one unit element 60 is obtained. Even when the light intensity varies to some extent, the function (deflection function, light condensing function) for narrowing the emission direction of the light emitted from the single unit element 60 to a narrow angle range is effectively exhibited.
  • the emission direction of the light source light incident on the inclined surface 61 can be effectively aligned. That is, the function of the panel member 20 such as directing light incident on each position of the panel member 20 from the light source 15 to a desired position is more effectively exhibited.
  • the light reflected by the unit element 60 arranged at a certain position in the first direction d1 travels toward the eyes of the observer in the room. It is done. In such a case, there is a possibility that only a certain part of the panel member 20 in the first direction d1 is shining and dazzling.
  • the first inclined surface 61 and the second inclined surface 62 is formed of a curved surface or a bent surface as in the illustrated example, such glare can be effectively eliminated. Is also possible.
  • the light whose light path is controlled by the light control sheet 40 is diffused to some extent, the distribution of the luminance on the panel member 20 along the first direction d1, and the luminance at each position on the panel member. The angular distribution changes gently.
  • the pattern is formed on the surface of the light reflecting sheet 30 that faces the light control sheet 40.
  • the light L24 and L25 that is subsequently directed to the second inclined surface 62 or the flat surface 63 is incident on the light reflecting sheet 30; This pattern will be illuminated. Thereby, even if the light that illuminates the panel member 20 is only the light projected from the light source 15, a person in the room can observe the pattern formed on the light reflecting sheet 30.
  • the light control sheet 40 and the light reflecting sheet 30 are connected via the flat surface 63 of the unit element 60 extending along the sheet surface of the light reflecting sheet 30. For this reason, the light control sheet 40 and the light reflection sheet 30 can be stably joined, and the panel member 20 can stably exhibit the expected effects.
  • the panel member 20 and the optical device 10 are used as a lighting device, and a part of the light projected from the light source 15 is reflected by the panel member 20 so as to illuminate a specific place, for example, a floor, from various directions. It may be.
  • the first inclined surface 61 is formed as a bent surface, but the present invention is not limited to this.
  • the first inclined surface 61 may be formed as a single flat surface.
  • the present invention is not limited to this, and the flat surface 63 is omitted. Also good. That is, the second surface 42 of the light control sheet 40 may be configured by the first inclined surface 61 and the second inclined surface 62 of the unit element 60.
  • the present invention is not limited to this, and the unit elements 60 are arranged on the second surface 52 of the main body 50.
  • the elements 60 may be arranged with a gap.
  • a part of the second surface 42 of the light control sheet 40 is configured by the second surface 52 of the main body 50.
  • the example in which the plurality of unit elements 60 are configured the same is shown, but the present invention is not limited to this.
  • the example in which the some 1st inclined surface 61 was mutually comprised was shown, it is not restricted to this.
  • the example in which the several 2nd inclined surface 62 was mutually comprised was shown, it is not restricted to this.
  • the example in which the some flat surface 63 was mutually comprised was shown, it is not restricted to this.
  • the example in which the several unit element 60 was arranged in the 1st direction d1 with the fixed pitch was shown, it is not restricted to this.
  • the shape of the unit element 60, the inclination angle ⁇ a of the first inclined surface 61 with respect to the normal direction nd of the panel member, and the second with respect to the normal direction nd of the panel member The inclination angle ⁇ b of the inclined surface 62, the arrangement pitch of the unit elements 60 along the sheet surface of the light control sheet, the width W1 of the first inclined surface 61 along the sheet surface of the light control sheet, and the sheet surface of the light control sheet.
  • the width W2 of the second inclined surface 62 and the width W3 of 63 along the sheet surface of the light control sheet may be changed.
  • each unit element 60 extends linearly and a plurality of unit elements 60 are arranged in a one-dimensional array (linear array array).
  • a one-dimensional array linear array array
  • the present invention is not limited to this.
  • Each unit element 60 may be formed in a dot shape, and each unit element 60 may be arranged in a two-dimensional array.
  • a pattern may be formed in addition to the light reflecting sheet 30, and in addition to the pattern of the light reflecting sheet 30 And the pattern may be formed in the other part of the panel member 20.
  • a pattern may be formed on the first surface 51 of the main body 50 (the first surface 41 of the light control sheet 40), or a pattern may be formed on the second surface 52 of the main body 50 of the light control sheet 40. May be.

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

Abstract

La présente invention concerne un élément panneau (20) comprenant : une feuille de régulation de lumière (40) comportant une première surface (41) et une seconde surface (42) qui sont agencées de sorte à se faire face l'une l'autre ; et une feuille réfléchissant la lumière (30) qui est agencée de sorte à faire face à la seconde surface de la feuille de régulation de lumière. La seconde surface de la feuille de régulation de lumière comprend une pluralité de premières surfaces inclinées (61) et une pluralité de secondes surfaces inclinées (62) qui sont agencées dans un sens. Les premières surfaces inclinées et les secondes surfaces inclinées sont agencées en alternance dans ledit un sens. Dans une section transversale qui est parallèle tant au sens normal de la feuille de régulation de lumière qu'au dit un sens, les premières surfaces inclinées et les secondes surfaces inclinées sont inclinées dans un sens qui est inverse au sens normal de la feuille de régulation de lumière.
PCT/JP2013/061308 2012-04-16 2013-04-16 Élément panneau et dispositif optique WO2013157550A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2012093299A JP5988136B2 (ja) 2012-04-16 2012-04-16 パネル部材、光学デバイス及び壁材
JP2012-093299 2012-04-16
JP2012-189107 2012-08-29
JP2012189107A JP6250269B2 (ja) 2012-08-29 2012-08-29 パネル部材および光学デバイス
JP2012-288312 2012-12-28
JP2012288312A JP6078939B2 (ja) 2012-12-28 2012-12-28 パネル部材および光学デバイス

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WO2013157550A1 true WO2013157550A1 (fr) 2013-10-24

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WO (1) WO2013157550A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11174214A (ja) * 1997-12-11 1999-07-02 Casio Comput Co Ltd 指向性反射板およびそれを用いた反射型表示装置
JP2008299219A (ja) * 2007-06-01 2008-12-11 Ricoh Co Ltd 反射型スクリーン、表示システム
JP2012133081A (ja) * 2010-12-21 2012-07-12 Seiko Epson Corp スクリーン及び投射システム
JP2013088543A (ja) * 2011-10-17 2013-05-13 Seiko Epson Corp スクリーン及び投射システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11174214A (ja) * 1997-12-11 1999-07-02 Casio Comput Co Ltd 指向性反射板およびそれを用いた反射型表示装置
JP2008299219A (ja) * 2007-06-01 2008-12-11 Ricoh Co Ltd 反射型スクリーン、表示システム
JP2012133081A (ja) * 2010-12-21 2012-07-12 Seiko Epson Corp スクリーン及び投射システム
JP2013088543A (ja) * 2011-10-17 2013-05-13 Seiko Epson Corp スクリーン及び投射システム

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