JP4747153B2

JP4747153B2 - Structure that corrects the outgoing light field of the light guide plate

Info

Publication number: JP4747153B2
Application number: JP2007288180A
Authority: JP
Inventors: 陳蔚軒; 高佩齢; 李俊賢
Original assignee: Radiant Opto Electronics Corp
Current assignee: Radiant Opto Electronics Corp
Priority date: 2007-11-06
Filing date: 2007-11-06
Publication date: 2011-08-17
Anticipated expiration: 2027-11-06
Also published as: JP2009117145A

Description

本発明は導光板の出光光場を導正する構造に関し、詳細には、導光板の光源光場を導正し、出光の均斉度を向上させる構造に関する。 The present invention relates to a structure for directing a light output light field of a light guide plate, and more particularly to a structure for improving the uniformity of light output by correcting the light source light field of a light guide plate.

公知の導光板１は、図１で示されるように、少なくとも、入光面１１、反射面１２、及び、出光面１３、からなる。入光面１１は、ランプ源Aが発射する光源を受け、光源が入光面１１から導光板１に入射した後、導光板１の内部に伝達される。反射面１２に入射する光源は、反射面から出光面１３方向に進み、光源の集光効果を強化するため、導光板１の出光面１３と反射面１２の表面は、それぞれ、多くのV字型導光体１３１、１２１を設置する。出光面１３上のV字型導光体１３１の走向はランプ源Aと垂直で、反射面１２表面のV字型導光体１２１の走向はランプ源Aと平行である。よって、光源がこれらのV字型導光体１３１、１２１の槽壁を経て、導光板１を離れる時、多方向に集光する効果を有する。 As shown in FIG. 1, the known light guide plate 1 includes at least a light incident surface 11, a reflective surface 12, and a light exit surface 13. The light incident surface 11 receives a light source emitted from the lamp source A. After the light source enters the light guide plate 1 from the light incident surface 11, the light incident surface 11 is transmitted to the inside of the light guide plate 1. The light source incident on the reflective surface 12 proceeds from the reflective surface toward the light exit surface 13, and the light exit surface 13 of the light guide plate 1 and the surface of the reflective surface 12 each have a large number of V-shapes in order to enhance the light collection effect of the light source. The mold light guides 131 and 121 are installed. The running direction of the V-shaped light guide 131 on the light exit surface 13 is perpendicular to the lamp source A, and the running direction of the V-shaped light guide 121 on the surface of the reflecting surface 12 is parallel to the lamp source A. Therefore, when the light source leaves the light guide plate 1 through the tank walls of these V-shaped light guides 131 and 121, it has an effect of condensing in multiple directions.

公知の導光板１は上述の構造により、導光板１が異なる方向に集光する効果を達成するが、ランプ源Aが発光する時、光源はランプ源Aの二端で発散角を形成し、図２、図３で示されるように、光線が導光板１に進入する時、導光板１二側の光場分布が二側方向に偏移し、この時、V字型導光体１２１は、偏移した光場光源の作用に対し最適な効果が達成されず、出光面１３中のV字型導光体１３１とうまく作用せず、導光板１の出光に影響する。 The known light guide plate 1 achieves the effect that the light guide plate 1 collects light in different directions due to the above-described structure, but when the lamp source A emits light, the light source forms a divergence angle at the two ends of the lamp source A, As shown in FIG. 2 and FIG. 3, when the light beam enters the light guide plate 1, the light field distribution on the two sides of the light guide plate 1 shifts in two directions, and at this time, the V-shaped light guide 121 is The optimum effect for the action of the shifted light field light source is not achieved, the V-shaped light guide 131 in the light output surface 13 does not work well, and the light output of the light guide plate 1 is affected.

本発明の目的は、公知の導光板が、ランプ源が発光する時、光源がランプ源の二端で発散角を形成し、光線が導光板に進入する時、導光板二側の光場分布が二側方向に偏移して、光源作用効果に影響することを改善することにある。 It is an object of the present invention to provide a known light guide plate, when the lamp source emits light, the light source forms a divergence angle at the two ends of the lamp source, and when the light beam enters the light guide plate, the light field distribution on the two sides of the light guide plate This is to improve the influence on the light source effect by shifting in two directions.

本発明の導光板の出光光場を導正する構造において、導光板は、入光面、反射面、及び、出光面からなる。反射面、及び、出光面は多数の導光体を形成し、反射面のV字型導光体の走向はランプ源と平行で、出光面のV字型導光体の走向はランプ源と垂直である。反射面の導光板に、導光補助構造を設置する。導光補助構造の走向は、ランプ源と垂直で、長い斜辺と短い斜辺を有し、導光補助体の長い斜辺は大きい斜辺面積を有するので、光源作用が正しい方向に導向され、導光板の出光の均質度を向上させる。 In the structure for correcting the outgoing light field of the light guide plate of the present invention, the light guide plate includes a light incident surface, a reflective surface, and a light outgoing surface. The reflecting surface and the light emitting surface form a number of light guides, the running direction of the V-shaped light guide on the reflecting surface is parallel to the lamp source, and the running direction of the V-shaped light guide on the light emitting surface is the lamp source. It is vertical. A light guide auxiliary structure is installed on the light guide plate on the reflection surface. The direction of the light guide auxiliary structure is perpendicular to the lamp source and has long and short hypotenuses, and the long hypotenuse of the light guide auxiliary body has a large hypotenuse area, so that the light source action is directed in the correct direction and the light guide plate Improve the uniformity of light emission.

本発明の導光板の出光光場を導正する構造は、導光補助構造が、導光板の両側辺縁側から中央部側に向かって密から疎になるよう配置され、これにより、光源作用が正しい方向に導向され、導光板の出光の均質度を向上させる。 The structure for directing the outgoing light field of the light guide plate of the present invention is such that the light guide auxiliary structure is arranged so as to become sparse from the side edges on both sides of the light guide plate toward the center side, thereby providing the light source action. The light is directed in the correct direction to improve the uniformity of light output from the light guide plate.

本発明により導光板の出光の均斉度が向上する。 According to the present invention, the uniformity of light output of the light guide plate is improved.

図４で示されるように、本発明の導光板２は、入光面２１、反射面２２、及び、出光面２３からなる。 As shown in FIG. 4, the light guide plate 2 of the present invention includes a light incident surface 21, a reflective surface 22, and a light exit surface 23.

入光面２１は、ランプ源Aが発射する光源を受け、光源が入光面２１から導光板２に入射した後、導光板２の内部に伝達される。 The light incident surface 21 receives a light source emitted from the lamp source A. After the light source enters the light guide plate 2 from the light incident surface 21, the light incident surface 21 is transmitted to the inside of the light guide plate 2.

反射面２２は、入光面２１に相隣し、導光板２の一側に位置し、反射面２２上に多くのV字型導光体２２１を設置し、V字型導光体２２１の走向はランプ源Aと平行である。反射面２２には、導光板２の両側領域に、即ち、ランプ源Aの両端に相対して導光補助構造２２を設置する。導光補助構造２２２の走向はランプ源Aと垂直で、且つ、各導光補助構造２２２は導光板２の両側辺縁側に向かって、長い斜辺２２２aを形成し、導光板２の中央部側に向かって斜辺が短い斜辺２２２ｂを形成し、各導光補助構造２２２中の長い斜辺２２２ａを利用して大きい斜面積を形成し、光源の反射作用に有利である。また、導光補助構造２２２は実施時、導光板２の両側辺縁側から中央部側に密から疎になるよう配置される。 The reflective surface 22 is adjacent to the light incident surface 21, is located on one side of the light guide plate 2, and a large number of V-shaped light guides 221 are installed on the reflective surface 22. The strike is parallel to the lamp source A. On the reflection surface 22, light guide auxiliary structures 22 are installed in both side regions of the light guide plate 2, that is, opposite to both ends of the lamp source A. The direction of the light guide auxiliary structure 222 is perpendicular to the lamp source A, and each light guide auxiliary structure 222 forms a long oblique side 222a toward both side edges of the light guide plate 2 , and is formed on the center side of the light guide plate 2. An oblique side 222b having a shorter oblique side is formed, and a large oblique area is formed by using the long oblique side 222a in each light guide auxiliary structure 222, which is advantageous for the light source reflecting action. Moreover, the light guide auxiliary structure 222 is arranged so as to be sparse and dense from the side edges on both sides of the light guide plate 2 to the center side at the time of implementation.

出光面２３は、入光面２１に相隣し、導光板２の頂部に位置し、出光面２３上に、多くのＶ字型導光体２３１を設置し、Ｖ字型導光体２３１の走向はランプ源Ａと垂直である。 The light exit surface 23 is adjacent to the light entrance surface 21 and is located at the top of the light guide plate 2. On the light exit surface 23, many V-shaped light guides 231 are installed. The strike is perpendicular to the lamp source A.

本発明の実施時、図５で示されるように、ランプ源Ａの光線は、入光面２１から導光板２の内部に進入し、反射面２２に入射する光源は、反射面から出光面２３の方向に進み、出光面２３上のＶ字型導光体２３１の走向はランプ源Ａと垂直で、反射面２２中のＶ字型導光体２２１の走向はランプ源Ａと平行で、これにより、光源からの光がこれらのＶ字型導光体２３１、２２１の作用により導光板２を離れる時、いろいろな方向に発光する効果を有する。この他、本発明の反射面２２中の導光板２の両側領域に導光補助構造２２２を設置し、且つ、導光補助構造２２２の走向はランプ源Ａと垂直である。各導光補助構造２２２は、長い斜辺２２２ａと短い斜辺２２２ｂを有し、導光補助構造２２２は、導光板２の両側辺縁側から中央部側に向かって密から疎に配置され、よって、光源からの光が反射面２２に入射し、反射すると同時に、導光補助構造２２２の長い斜辺２２２ａに入射して、光線が法線Ｌを屈折し、光源を正しい方向に導向する。導光補助構造２２２の長い斜辺２２２ａは、大きい斜辺面積を形成し、多くの光源が導光板２の正しい方向に出光し、これにより、導光板２の両側の出光が生成する発散角は、導光補助構造２２２により導正され、出光面２３中のＶ字型導光体２３１が好ましい適合作用を達成し、図６で示されるように、導光板２の出光光源の均質度が向上する。 The time of execution of the present invention, as shown in Figure 5, light rays of the lamp source A is entered from the light incident surface 21 in the light guide plate 2, the light source incident on the reflecting surface 22 is reflected light exiting surface from surface 23 The direction of the V-shaped light guide 231 on the light exit surface 23 is perpendicular to the lamp source A, and the direction of the V-shaped light guide 221 in the reflecting surface 22 is parallel to the lamp source A. Therefore, when the light from the light source leaves the light guide plate 2 by the action of the V-shaped light guides 231 and 221, it has an effect of emitting light in various directions. In addition, the auxiliary light guide structure 222 is installed in both side regions of the light guide plate 2 in the reflection surface 22 of the present invention, and the running direction of the auxiliary light guide structure 222 is perpendicular to the lamp source A. Each light guide auxiliary structure 222 has a long oblique side 222a and a short oblique side 222b, and the light guide auxiliary structure 222 is arranged densely and sparsely from the side edge sides of the light guide plate 2 toward the central portion side , and thus the light source light from the incident on the reflecting surface 22, and at the same time reflecting incident on the long oblique side 222a of the light guide auxiliary structure 222, light rays are refracted normal L, to ShirubeMuko the light source in the right direction. Long hypotenuse 222a of the light guide auxiliary structure 222 forms a large oblique area, many light sources are light exit to the correct direction of the light guide plate 2, it is thereby, divergence angle on both sides of the light exit the light guide plate 2 is produced, Guided by the light guide auxiliary structure 222, the V-shaped light guide 231 in the light exit surface 23 achieves a preferable fitting action, and the homogeneity of the light output light source of the light guide plate 2 is improved as shown in FIG. .

本発明は、反射面２２が導光板２の両側領域に導光補助構造２２２を設置することにより、導光補助構造２２２の走向がランプ源と垂直をなし、長い斜辺２２２ａと短い斜辺２２２ｂを有し、これにより、導光補助構造２２２の長い斜辺２２２ａが、ランプ源Ａの発散角の光源を正しい向きに導正し、出光面２３中のＶ字型導光体２３１に作用するのに有利で、導光板２の出光光源の均質度を向上させる。この他、導光板２の中央領域に進入する時、光場の偏移現象が徐々に緩和され、これにより、導光補助構造２２２は、導光板２の両側辺縁側から中央部側に密から疎になるよう配置され、導光板２の出光光場と対応する。 In the present invention, the light guide auxiliary structure 222 is disposed on both sides of the light guide plate 2 so that the light guide auxiliary structure 222 has a running direction perpendicular to the lamp source and has a long oblique side 222a and a short oblique side 222b. and, thereby, a long oblique sides 222a of the light guide auxiliary structure 222, correct guiding a light divergence angle of light source a to the correct orientation, to act on the V-shaped light guide body 231 in the light exit surface 23 Advantageously, the homogeneity of the light source of the light guide plate 2 is improved. In addition, when the light guide plate 2 enters the central region of the light guide plate 2, the light field shift phenomenon is gradually relieved, so that the light guide auxiliary structure 222 is densely arranged from both side edges of the light guide plate 2 to the center portion side. It arrange | positions so that it may become sparse , and respond | corresponds with the light emission light field of the light-guide plate 2. FIG.

公知の導光板の立体図である。It is a three-dimensional view of a well-known light guide plate. 公知の導光板の光源進行図である。It is a light source progression view of a publicly known light guide plate. 公知の導光板の光場出光図である。It is a light field light emission figure of a well-known light-guide plate. 本発明の導光板の立体図である。It is a three-dimensional view of the light guide plate of the present invention. 本発明の導光板の光源進行図である。It is a light source progression view of the light guide plate of the present invention. 本発明の導光板の光場出光図である。It is a light field light emission figure of the light-guide plate of this invention.

符号の説明Explanation of symbols

１導光板
１１入光面
１２反射面
１２１Ｖ字型導光体
１３出光面
１３１Ｖ字型導光体
２導光板
２１入光面
２２反射面
２２１Ｖ字型導光体
２２２輔助導光結構
２２２ａ長い斜辺
２２２ｂ短い斜辺
２３出光面
２３１Ｖ字型導光体
Ａランプ源 1 light guide plate
11 incident surface
12 reflective surface 121V light guide
13 light exit surface 131V-shaped light guide
2 light guide plate
21 entrance surface
22 reflective surface 221 V-shaped light guide
222 Helping light guide structure 222a long hypotenuse
222b Short hypotenuse 23 light exit surface
231V-shaped light guide A lamp source

Claims

入光面と、反射面と、出光面から成り、上記入光面は線状のランプ源から発射される光を受けるよう配置され、上記反射面は、上記入光面に相隣し、断面Ｖ字型で２つの斜辺を有すると共に上記ランプ源に平行に走向する複数の導光体を設け、上記出光面は、上記反射面に対向して、また、上記入光面に相隣して配置され、さらに、断面Ｖ字型で２つの斜辺を有すると共に線状の上記ランプ源に垂直に走向する複数の導光体を設けて、成る導光板において、
上記反射面には、上記導光板の両側領域に配置されると共に、上記ランプ源に垂直で、且つ、上記導光板の両側辺縁側に面する長い斜辺と、中央部側に面する短い斜辺を形成し、また、上記導光板の両側辺縁側から中央部側に密から疎になるように配置された導光補助構造を設置することを特徴とする導光板の出光光場を導正する構造。 It consists of a light incident surface, a reflective surface, and a light exit surface, the light incident surface is arranged to receive light emitted from a linear lamp source, and the reflective surface is adjacent to the light incident surface and has a cross section. A plurality of light guides that are V-shaped and have two oblique sides and run parallel to the lamp source are provided, and the light exit surface faces the reflective surface and is adjacent to the light entrance surface. In the light guide plate, further comprising: a plurality of light guides arranged in a V-shaped cross section and having two oblique sides and running perpendicularly to the linear lamp source,
The reflective surface includes a long oblique side that is disposed on both sides of the light guide plate and that is perpendicular to the lamp source and faces both side edges of the light guide plate, and a short oblique side that faces the center side. A structure for guiding the outgoing light field of the light guide plate, characterized in that a light guide auxiliary structure arranged so as to be sparse and dense from both sides of the light guide plate to the center portion side is formed .