JP2000304908A - Light guide control element - Google Patents

Light guide control element

Info

Publication number
JP2000304908A
JP2000304908A JP11112583A JP11258399A JP2000304908A JP 2000304908 A JP2000304908 A JP 2000304908A JP 11112583 A JP11112583 A JP 11112583A JP 11258399 A JP11258399 A JP 11258399A JP 2000304908 A JP2000304908 A JP 2000304908A
Authority
JP
Japan
Prior art keywords
surface
high
make
light guide
slope
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP11112583A
Other languages
Japanese (ja)
Inventor
Osamu Kuramitsu
Keiji Sakamoto
Makoto Yamada
修 倉光
圭司 坂本
真 山田
Original Assignee
Matsushita Electric Works Ltd
松下電工株式会社
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 Matsushita Electric Works Ltd, 松下電工株式会社 filed Critical Matsushita Electric Works Ltd
Priority to JP11112583A priority Critical patent/JP2000304908A/en
Publication of JP2000304908A publication Critical patent/JP2000304908A/en
Application status is Pending legal-status Critical

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/10Beam splitting or combining systems
    • G02B27/14Beam splitting or combining systems operating by reflection only
    • G02B27/145Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/04Prisms
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means 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
    • G02B6/0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide

Abstract

PROBLEM TO BE SOLVED: To obtain a light guide control element reflecting efficiently an incident light coming in one direction and passing an incident light in the reverse direction by providing a plurality of micro-prisms on a surface so as to make reflectance high in one surface and make transmissivity high in the other surface contrary to the surface.
SOLUTION: The light guide element is formed by arranging a plurality of micro prisms 1 on a surface so as to make reflectance high in one surface 2 and make transmissivity high in the other surface 3 contrary to the surface 2. That is, a rectangular prism plate 6 is formed by placing many column prisms each having a cross-section of a substantially right-angled isosceles triangle so as to make the bottom surfaces 5 against the slope flush with each other. In such construction, incident light coming into a slope 4 of the triangular prism transmits (a transmitted light P1) the bottom surface 5. The incident light coming into the bottom surface 5 of the triangular prism totally reflects at the inner surface of the slope 4 and transmits (a transmitted light P2) through the bottom surface 5. Accordingly the side where the bottom surface 5 is aligned becomes one surface 2 with high reflectance and the side where the slope 4 is aligned becomes one surface 3 with high transmissivity.
COPYRIGHT: (C)2000,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】この発明は、照明器具、ハイブリッド採光装置などに適用される導光制御素子に関するものである。 TECHNICAL FIELD The present invention relates to a light guide control device applied luminaire, the hybrid lighting device.

【0002】 [0002]

【従来の技術】消費電力の節減のため太陽光を有効に利用する採光ダクトを設け、採光ダクトの内部にハーフミラーを配置し、その背面に人工照明器具を設けたものがあった(例えば特開平4-274102号) 。 BACKGROUND OF THE INVENTION Effective daylighting duct provided for utilizing sunlight for power savings, a half mirror disposed within the lighting duct, there is one provided with artificial lighting fixtures on the back (for example, Japanese No. No. 4-274102).

【0003】 [0003]

【発明が解決しようとする課題】しかし、ハーフミラーであるため、効率が悪く大光束を得るためには光源のワット数を大きくする必要があった。 [SUMMARY OF THE INVENTION However, since a half mirror, in order to efficiently obtain a poor large light flux it is necessary to increase the wattage of the light source. またハーフミラーに代えて反射板を使用し、照明器具または反射板を移動することにより太陽光と人工光を選択するようにしたものでは、移動手段が必要となり構造が複雑になる。 Also using the reflection plate in place of the half mirror, which was to choose a sunlight and artificial light by moving a luminaire or reflector, moving means are required structure is complicated.

【0004】したがって、この発明の目的は、構造が簡単で、効率よく一方向から入射する光を反射し、逆方向から入射する光を透過することができる導光制御素子を提供することである。 [0004] Therefore, object of the present invention, the structure is simple, and reflect light to efficiently enter from one direction, to provide a light control element capable of transmitting light incident from the opposite direction .

【0005】 [0005]

【課題を解決するための手段】請求項1記載の導光制御素子は、片面の反射率が高く前記片面と反対側の他の片面の透過率が高くなるように、複数のマイクロプリズムを面状に配置したことを特徴とするものである。 Means for Solving the Problems] light control device according to claim 1, wherein, as in other side of the transmittance of one side of the reflectance and high the one side opposite is higher, the surface a plurality of micro prisms it is characterized in that arranged in Jo.

【0006】請求項1記載の導光制御素子によれば、マイクロプリズムの高い透過性と反射性を利用して、効率よく一方向から入射する光を反射し、逆方向から入射する光を透過することができる。 [0006] According to the light guide control device of claim 1, wherein the transmission by using a reflective high permeability microprisms, reflects light incident from efficiently in one direction, the light incident from the opposite direction can do. また採光に利用した場合、照明器具のワット数を低減することができるとともに太陽光の利用効率が高く、しかも反射板を用いた従来例のように移動手段が必要でないので構造を簡単にすることができる。 The case of using the lighting, the utilization efficiency of sunlight it is possible to reduce the wattage of the lighting fixtures is high and to simplify the structure the moving means is not required as in the conventional example using a reflection plate can.

【0007】 [0007]

【発明の実施の形態】この発明の第1の実施の形態を図1から図5により説明する。 DETAILED DESCRIPTION OF THE INVENTION will be described with reference to FIG 5 the first embodiment of the present invention from FIG. すなわち、この導光制御素子は、片面2の反射率が高く片面2と反対側の他の片面3の透過率が高くなるように、複数のマイクロプリズム1を面状に配置している。 That is, the light guide control device, as another one side 3 of the transmittance of reflectance of one side 2 is as high as one-side 2 opposite side is high, are arranged a plurality of micro prisms 1 in a planar shape.

【0008】実施の形態において、図1は断面が略直角二等辺三角形の柱状プリズムの斜面に対する底面5を面一になるように多数並べて矩形状のプリズム平板6を形成したものである。 [0008] In the embodiment, FIG. 1 is a cross-section to form a rectangular prism flat 6 are arranged a number such that the bottom surface 5 flush against the inclined surface of the pole prism of substantially right-angled isosceles triangle. 矢印は光P 1は透過を示し、光P 2 Arrows light P 1 represents a transmission light P 2
は反射を示す。 It indicates the reflection. 図2(a)は光P 1の透過を示し、三角プリズムの斜面4に入射した光は底面5に透過する。 2 (a) shows the transmission of light P 1, light incident on the inclined surface 4 of the triangular prism is transmitted to the bottom surface 5. 図2(b)は光P 2の反射を示し、三角プリズムの底面5 FIG. 2 (b) shows the reflection of light P 2, the bottom surface of the triangular prism 5
に入射した光は斜面4の内面を全反射して底面5より透過する。 The light incident on the transmitting from the bottom 5 by total reflection inside surface of the slope 4. したがって、図1の底面5が並んだ側が反射率の高い片面2となり、斜面4の並んだ側が透過率の高い片面3となる。 Accordingly, a higher one surface 3 high sided 2 next side lined bottom 5 is reflective, the side aligned with the inclined surface 4 transmittance of FIG.

【0009】図3は図1のプリズム平板6を円形に切り抜いて、中空の円筒状のライトガイド7に配設したものである。 [0009] Figure 3 is cut out prism flat 6 of FIG. 1 in a circle, in which is disposed a hollow cylindrical light guide 7. 例えば矢印A 1の方向からの太陽光を矢印A 2 For example sunlight from the direction of arrow A 1 arrow A 2
側に透過し、矢印A 3の方向の照明器具からの光を逃すことなく矢印A 2の方向に反射する。 Transmitted to the side, it is reflected in the direction of arrow A 2 without missing the light from the direction of the luminaire of arrow A 3.

【0010】図4は図1のプリズム平板6をサイズの異なる矩形に切り抜いて、矩形筒状のライトガイド8に設置したものである。 [0010] Figure 4 is cut into different rectangular sizes prism flat 6 in FIG. 1, in which was placed in the rectangular tubular light guide 8.

【0011】図5は、図1のプリズム平板6より三角形状のピース9を形成し、ピース9の先端(頂点)を揃えるように並べて円板状に形成するものである。 [0011] Figure 5 is a forming a triangular piece 9 than the prism flat 6 in FIG. 1, is formed by arranging so as to align the tip of the piece 9 (vertex) in a disk shape. 図(a) Figure (a)
は三角柱状のマイクロプリズム1を示し、図(b)はプリズム平板6のピース9の切断位置を示し、図(c)はピース9の平面図である。 Represents a microprism 1 of the triangular shape, Fig. (B) shows a cutting position of the pieces 9 of the prism flat 6, FIG. (C) is a plan view of the piece 9.

【0012】第1の実施の形態によれば、マイクロプリズム1の高い透過性と反射性を利用して、効率よく一方向から入射する光を反射し、逆方向から入射する光を透過することができる。 According to the first embodiment, that by using a reflective high permeability microprism 1 reflects the light incident from efficiently in one direction and transmits light incident from the opposite direction can. また採光に利用した場合、照明器具のワット数を低減することができるとともに太陽光の利用効率が高く、しかも反射板を用いた従来例のように移動手段が必要でないので構造を簡単にすることができる。 The case of using the lighting, the utilization efficiency of sunlight it is possible to reduce the wattage of the lighting fixtures is high and to simplify the structure the moving means is not required as in the conventional example using a reflection plate can.

【0013】この発明の第2の実施の形態を図6から図8に示す。 [0013] A second embodiment of the present invention in FIGS. 6 to 8. すなわち、この導光制御素子は、マイクロプリズム1が断面三角形の三角錐形状であり、三角錐の頂点を揃え斜面に対する底面を面一になるように並べて円板状に形成している。 That is, the light guide control device, microprism 1 is triangular pyramidal triangular section are formed side by side so that the bottom surface flush in a disc shape for slopes aligned vertices of a triangular pyramid. 図6(a)は一個のマイクロプリズム1を示し、図(b)および図(c)は複数個を並べた扇形のピース10を示し、図(d)および図(e)はピース10を円板11を形成するように並べた状態である。 6 (a) shows a single microprism 1, FIG. (B) and FIG. (C) shows a piece 10 of the sector by arranging a plurality, FIG (d) and (e) of FIG circle piece 10 a state arranged to form a plate 11. この場合も第1の実施の形態の図2で説明したマイクロプリズム1の透過性および反射性により図(d)の矢印のように透過反射する。 In this case also transmits reflected as indicated by an arrow in (d) of FIG by transmission and reflective properties of the micro prism 1 described in FIG. 2 of the first embodiment.

【0014】図7は、円板11を円筒状のライトガイド7内に配設したものであり、矢印は光の透過・反射を示す。 [0014] Figure 7 is obtained by disposing the disc 11 in the cylindrical light guide 7, arrows indicate transmission and reflection of light.

【0015】図8は外形が円板11と異なり、矩形板1 [0015] Figure 8 is different from the outer shape is a disc 11, a rectangular plate 1
2に形成した例である。 It is an example of forming two.

【0016】この発明の第3の実施の形態を図9および図10に示す。 [0016] A third embodiment of the present invention in FIGS. すなわち、この導光制御素子は、円板1 That is, the light guide control element disc 1
1と円錐体13とを対向配置している。 It is opposed to the 1 and cone 13. 円板11は第2 The circular plate 11 is the second
の実施の形態と同様に、マイクロプリズム1が断面三角形で三角錐形状に形成したものであり、三角錐の頂点を揃え底面を面一になるように並べて形成している。 As with the embodiment, the micro prism 1 is made by forming a triangular pyramid shape with triangular cross section, are formed side by side so that the bottom surface aligning the vertices of a triangular pyramid flush. 円錐体13は、マイクロフィルム1が断面三角形で三角錐形状のマイクロプリズム1の多数の頂点を頂点とし斜面に対する底面を内に向けた略円錐状に並べて形成したものである。 Cone 13 is a microfilm 1 is formed by arranging in a substantially conical shape toward the inner bottom surface for slope and vertex number of the vertex of the micro prism 1 triangular pyramid shape in cross-section triangular. この場合、略円錐状の内周面側が反射率の高い片面2となり、外周面側が透過率の高い片面3となる。 In this case, the inner peripheral surface side substantially conical high sided 2 next reflectance, the outer peripheral surface side becomes high transmittance sided 3.
そして円板11の断面三角形の頂点側に円錐体13の内周面が向くように円錐の底面を対向している。 The inner peripheral surface of the cone 13 the vertex side of the triangular cross section of the disc 11 faces the base of the cone to face.

【0017】図10はこの導光制御素子を円筒状のライトガイド7に配置している。 [0017] FIG. 10 is arranged the light control element on the cylindrical light guide 7.

【0018】矢印B 1は平板11および円錐体13を透過する光、B 2はB 1と反対向きに平板11を透過し円錐体13で反射し平板11を透過する光、B 3はB 1と反対向きに平板11に入射して反射する光である。 The arrow B 1 represents the light transmitted through the flat plate 11 and the cone 13, B 2 is light passing through the reflection and flat 11 at the cone 13 through the flat plate 11 to B 1 and opposite, B 3 is B 1 a light incident on and reflected by the flat plate 11 in the direction opposite to the.

【0019】なお、図5に示した三角形状のピース9を円錐形をなすように並べて円錐体13を形成してもよい。 [0019] It is also possible to form a cone 13 side by side triangular pieces 9 shown in FIG. 5 so as to form a conical shape.

【0020】この発明の第4の実施の形態を図11に示す。 [0020] A fourth embodiment of the present invention in FIG. 11. すなわち、この導光制御素子は、再帰プリズム15 That is, the light guide control element, recursive prism 15
を例えば円形の板状に形成し、円筒状のライトガイド7 The example is formed in a circular plate shape, cylindrical light guide 7
内に配置している。 They are arranged within. 再帰プリズム15は極小さな四角錐状のマイクロプリズム1の多数を、その頂部を一方向に向けて底面をそろえるように並べたものである。 Recursive prism 15 are those poles of multiple small pyramidal microprism 1, arranged so as to align the bottom surface toward the top in one direction. この四角錐状マイクロプリズム1も頂部側から入射した光は図2(a)に示すように透過し、斜面に対する底面から入射した光は図2(b)に示すように反射する。 Light incident from the pyramidal microprism 1 also the top side is transmitted as shown in FIG. 2 (a), the light incident from the bottom surface with respect to the inclined surface for reflecting, as shown in FIG. 2 (b). すなわち光線C 1は再帰プリズム15を透過し、光線C 1と反対向きに再帰プリズム15に入射する光線C 2は再帰プリズム15を反射する。 That light C 1 is transmitted through the recursive prism 15, light C 2 incident on recursive prism 15 in the opposite direction to the light beam C 1 reflects recursive prism 15. したがって、第1の実施の形態と同様な作用が得られる。 Therefore, the same effects as the first embodiment can be obtained.

【0021】 [0021]

【発明の効果】請求項1記載の導光制御素子によれば、 Effects of the Invention] According to the light guide control device according to claim 1,
マイクロプリズムの高い透過性と反射性を利用して、効率よく一方向から入射する光を反射し、逆方向から入射する光を透過することができる。 By utilizing the high permeability and the reflective of microprisms reflect light incident from efficiently in one direction, it is possible to transmit the light incident from the opposite direction. また採光に利用した場合、照明器具のワット数を低減することができるとともに太陽光の利用効率が高く、しかも反射板を用いた従来例のように移動手段が必要でないので構造を簡単にすることができる。 The case of using the lighting, the utilization efficiency of sunlight it is possible to reduce the wattage of the lighting fixtures is high and to simplify the structure the moving means is not required as in the conventional example using a reflection plate can.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】この発明の第1の実施の形態の斜視図である。 1 is a perspective view of a first embodiment of the present invention.

【図2】プリズムを示し、(a)は透過光の経路、 Figure 2 shows a prism, (a) shows the path of the transmitted light,
(b)は反射光の経路をそれぞれ示す。 (B) denotes a path of the reflected light.

【図3】中空のライトガイド内に嵌まるようにプリズム平板を円形に切断する状態を説明する説明図である。 3 is an explanatory view of the whole way prism flat fit into a hollow light guide illustrating a state of cutting a circle.

【図4】角筒形のライトガイド内に嵌まるようにプリズム平板を矩形に切断する状態を説明する説明図である。 4 is an explanatory view of the prism flat to fit square tubular shape of the light guide illustrating the state of cutting the rectangle.

【図5】(a)は三角柱形状のプリズムの拡大斜視図、 5 (a) is an enlarged perspective view of a triangular-shaped prism,
(b)はその多数を並べたプリズム平板を鋭角な三角形の平板に切断した状態を説明する説明図、(c)はその切断した状態の平面図である。 (B) is an explanatory view illustrating a state where the flat plate cut sharp triangular prism plates arranged the number, (c) is a plan view of the cut state.

【図6】第2の実施の形態を示し、(a)は三角錐状のマイクロプリズムの拡大斜視図、(b)はその複数を並べた扇形のピースの斜視図、(c)その平面図、(d) 6 shows a second embodiment, (a) shows the enlarged perspective view of a triangular pyramid microprism, (b) is a perspective view of the fan-shaped piece formed by arranging the plurality, a plan view (c) , (d)
は扇形ピースを複数並べて円板状に形成し光の反射透過を示す斜視図、(e)はその平面図である。 Is a perspective view showing the reflection and transmission of light is formed in a disk shape by arranging a plurality of fan-shaped pieces, (e) is a plan view thereof.

【図7】プリズムの円板を円筒状のライトガイド内に配置した状態の説明図である。 7 is an explanatory view showing a state in which the disc of the prism arranged in the cylindrical light guide.

【図8】プリズムの矩形板の平面図である。 8 is a plan view of the rectangular plate of the prism.

【図9】第3の実施の形態の斜視図である。 9 is a perspective view of a third embodiment.

【図10】円筒状のライトガイド内に配置した状態の説明図である。 10 is an explanatory view of a state arranged in the cylindrical light guide.

【図11】第4の実施の形態の再帰プリズムを円筒状のライトガイド内に配置した状態の説明図である。 11 is an explanatory view of a state in which the recursive prism of the fourth embodiment are arranged in a cylindrical light guide.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 マイクロプリズム 2 片面 3 他の片面 4 斜面 5 底面 6 プリズム平板 7 ライトガイド 8 ライトガイド 9 ピース 10 ピース 11 平板 13 円錐体 15 再帰プリズム P 1透過光 P 2反射光 1 microprism 2 sided 3 other sided 4 slopes 5 bottom 6 prism flat 7 light guide 8 light guide 9 pieces 10 pieces 11 flat 13 cone 15 recursive prism P 1 transmitted light P 2 reflected light

───────────────────────────────────────────────────── フロントページの続き (72)発明者 倉光 修 大阪府門真市大字門真1048番地 松下電工 株式会社内 Fターム(参考) 2H042 CA06 CA12 CA17 DE03 EA03 EA15 ────────────────────────────────────────────────── ─── front page of the continuation (72) inventor Osamu Kuramitsu Osaka Prefecture Kadoma Oaza Kadoma 1048 address Matsushita Electric Works, Ltd. in the F-term (reference) 2H042 CA06 CA12 CA17 DE03 EA03 EA15

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 片面の反射率が高く前記片面と反対側の他の片面の透過率が高くなるように、複数のマイクロプリズムを面状に配置したことを特徴とする導光制御素子。 [Claim 1] As other side of transmittance of the single-sided high reflectance of one surface opposite increases, light control element characterized in that a plurality of micro-prisms in a plane.
JP11112583A 1999-04-20 1999-04-20 Light guide control element Pending JP2000304908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11112583A JP2000304908A (en) 1999-04-20 1999-04-20 Light guide control element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11112583A JP2000304908A (en) 1999-04-20 1999-04-20 Light guide control element

Publications (1)

Publication Number Publication Date
JP2000304908A true JP2000304908A (en) 2000-11-02

Family

ID=14590369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11112583A Pending JP2000304908A (en) 1999-04-20 1999-04-20 Light guide control element

Country Status (1)

Country Link
JP (1) JP2000304908A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002202739A (en) * 2000-12-28 2002-07-19 Keiko Shoji Kk Illuminator
JP2009521782A (en) * 2005-12-21 2009-06-04 スリーエム イノベイティブ プロパティズ カンパニー led luminous body having a radial prism light deflector
JP2012221786A (en) * 2011-04-11 2012-11-12 Ushio Inc Luminaire
WO2013165722A1 (en) * 2012-05-04 2013-11-07 GE Lighting Solutions, LLC Reflector and lamp comprised thereof
US9587820B2 (en) 2012-05-04 2017-03-07 GE Lighting Solutions, LLC Active cooling device
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002202739A (en) * 2000-12-28 2002-07-19 Keiko Shoji Kk Illuminator
US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component
JP2009521782A (en) * 2005-12-21 2009-06-04 スリーエム イノベイティブ プロパティズ カンパニー led luminous body having a radial prism light deflector
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
JP2012221786A (en) * 2011-04-11 2012-11-12 Ushio Inc Luminaire
US9500355B2 (en) 2012-05-04 2016-11-22 GE Lighting Solutions, LLC Lamp with light emitting elements surrounding active cooling device
US9587820B2 (en) 2012-05-04 2017-03-07 GE Lighting Solutions, LLC Active cooling device
US9841175B2 (en) 2012-05-04 2017-12-12 GE Lighting Solutions, LLC Optics system for solid state lighting apparatus
US10139095B2 (en) 2012-05-04 2018-11-27 GE Lighting Solutions, LLC Reflector and lamp comprised thereof
WO2013165722A1 (en) * 2012-05-04 2013-11-07 GE Lighting Solutions, LLC Reflector and lamp comprised thereof

Similar Documents

Publication Publication Date Title
US5528720A (en) Tapered multilayer luminaire devices
US6072551A (en) Backlight apparatus for illuminating a display with controlled light output characteristics
JP4165509B2 (en) Light guide plate and backlight device
US6174064B1 (en) Light guide panel and plane illuminator apparatus
JP4378172B2 (en) Method for producing trans reflector, trans reflector system and display, as well as trans-reflector
EP0534140B1 (en) Backlighting device
JP5356273B2 (en) Lighting device and lighting device provided with the lighting device
JP2567552B2 (en) Light-emitting diode lamp with a refractive lens element
EP2137561B1 (en) Improved light guide and light-output device
JP2723251B2 (en) Light equipment that outputs the normalized light
JP5290755B2 (en) Lighting assembly and system
US7209628B2 (en) Luminaire device
JP3488467B2 (en) An illumination system using an array of microprisms
US20080013180A1 (en) Directional diffuser
US5735590A (en) Backlighting device with a transparent sheet having straight ridges
JP4153427B2 (en) A light guide which forms a substantially monochromatic beam
EP2297607B1 (en) Hollow backlight with tilted light source
CN101078795B (en) Light conducting board and backlight module
CN102047156B (en) Round illumination device
JP3785453B2 (en) Sided light output type backlight unit of a liquid crystal display device
US6072628A (en) Optical polarisation device
US5835661A (en) Light expanding system for producing a linear or planar light beam from a point-like light source
JP3532215B2 (en) An illumination system using an array of microprisms
JP2683399B2 (en) Reflection film
JP2842739B2 (en) Surface light source unit and a liquid crystal display device