JPH0412388A - Illumination light reflection preventing mechanism in display of emission system - Google Patents
Illumination light reflection preventing mechanism in display of emission systemInfo
- Publication number
- JPH0412388A JPH0412388A JP11563390A JP11563390A JPH0412388A JP H0412388 A JPH0412388 A JP H0412388A JP 11563390 A JP11563390 A JP 11563390A JP 11563390 A JP11563390 A JP 11563390A JP H0412388 A JPH0412388 A JP H0412388A
- Authority
- JP
- Japan
- Prior art keywords
- light
- polarizing filter
- illumination light
- display
- emitting display
- 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.)
- Granted
Links
- 238000005286 illumination Methods 0.000 title claims description 27
- 230000010287 polarization Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はＣＲＴ等の発光式表示器に於ける照明光反射防
止機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an illumination light reflection prevention mechanism in a light emitting display such as a CRT.
（従来の技術）
ＣＲＴ等の発光式表示器の表示面に照明用光源の反射像
が写って、所定の表示情報が見え難くくなるのを防止す
るために、従来例えば第３図の（ａ）に示すように、ル
ーバ照明等、照明用光源ａ側に遮光板すを設けて表示器
Ｃの表示面への入射を防いだり、（ｂ）に示すように照
明用光源ａの位置を表示器Ｃの表示面に合わせて設定し
て、反射光が操作者の目に入らないようにしたり、ある
いは（Ｃ）に示すように表示器Ｃの表示面の前面にフー
ドｄを設けて照明光の入射を防止したりしている。(Prior Art) In order to prevent a reflected image of an illumination light source from appearing on the display surface of a light-emitting display device such as a CRT, making it difficult to see predetermined display information, conventional methods have been used, for example, in (a) of FIG. ) As shown in (b), a light shielding plate is provided on the side of illumination light source a such as louver lighting to prevent the light from entering the display surface of display C, or as shown in (b), the position of illumination light source a can be displayed. Adjust the settings to match the display surface of display device C to prevent the reflected light from entering the operator's eyes, or install a hood d in front of the display surface of display device C to prevent the illumination light from entering the operator's eyes, as shown in (C). It also prevents the incidence of
（発明が解決しようとする課題）
照明用光源側に遮光板を設ける等の方法では、照明設備
に多大なる費用が掛かり、また照明用光源の位置を表示
器に合わせて設定する方法では、その他の個所の照明に
支障を来し、不自然な照明になり易い。そして表示器の
表示面の前面にフードを設ける方法では、所定の表示情
報が見にくくなる。またこれらのいずれの方法を採用し
た場合にも、完全な反射防止を行うことは困難である。(Problems to be Solved by the Invention) Methods such as providing a light shielding plate on the side of the illumination light source require a great deal of expense for lighting equipment, and methods of setting the position of the illumination light source to match the display require other costs. This may interfere with the lighting in certain areas, resulting in unnatural lighting. In addition, in the method of providing a hood in front of the display surface of the display device, predetermined display information becomes difficult to see. Furthermore, even when any of these methods is adopted, it is difficult to completely prevent reflection.
本発明は以上の課題を解決することを目的とするもので
ある。The present invention aims to solve the above problems.
（課題を解決するための手段）
上述の課題を解決するための手段を、その基本概念を表
した第１図を参照して説明すると、本発明の発光式表示
器に於ける照明光反射防止機構は、照明用光源１と発光
式表示器２間に於いて、照明用光源１側に、前記発光式
表示器２方向の光をＰ偏光とするように第一の偏光フィ
ルター３を設置すると共に、発光式表示器２の表示面４
の前面側に、偏光方向を前記第一の偏光フィルター３の
偏光方向と直交させると共に、該第−の偏光フィルター
３を通ったＰ偏光の入射角がブルースター角となるよう
に第二の偏光フィルター５を設置したものである。(Means for Solving the Problems) The means for solving the above-mentioned problems will be explained with reference to FIG. 1, which shows its basic concept. The mechanism installs a first polarizing filter 3 on the side of the illumination light source 1 between the illumination light source 1 and the light emitting display 2 so that the light in the direction of the light emitting display 2 becomes P-polarized light. In addition, the display surface 4 of the light-emitting display 2
On the front side of the polarizing filter 3, a second polarized light whose polarization direction is perpendicular to that of the first polarizing filter 3 and whose incident angle of the P-polarized light passing through the second polarizing filter 3 becomes the Brewster's angle. A filter 5 is installed.
（作用）
上記の構成に於いて、照明用光源１から出た光６ａ、す
なわち自然光は第一の偏光フィルター３を通過して直線
偏光となるが、室内の照明光としては差し支えない。し
かして、照明用光源１がらの光は、発光式表示器２方向
にはＰ偏光６ｂとなり第二の偏光フィルター５に入射す
る。第二の偏光フィルター５は、該Ｐ偏光６ｂの入射角
Ｏがブルースター角となるように設置しているので、該
第二の偏光フィルター５の表面での反射はない。(Function) In the above configuration, the light 6a emitted from the illumination light source 1, that is, natural light, passes through the first polarizing filter 3 and becomes linearly polarized light, but it can be used as indoor illumination light. Thus, the light from the illumination light source 1 becomes P-polarized light 6b in the direction of the light-emitting display 2 and enters the second polarizing filter 5. Since the second polarizing filter 5 is installed so that the incident angle O of the P-polarized light 6b is the Brewster's angle, there is no reflection on the surface of the second polarizing filter 5.
こうして第二の偏光フィルター５にＰ偏光６ｂが入射す
ると、該第二の偏光フィルター５は、図示の矢印ａで示
す偏光方向を前記第一の偏光フィルター３の偏光方向（
矢印ｂ）と直交させているので、前記Ｐ偏光６ｂは、こ
の第二の偏光フィルター５で吸収され、表示器２の表示
面４には到達しない。従ってこの表示面４で反射すると
いうこともない。When the P-polarized light 6b enters the second polarizing filter 5 in this way, the second polarizing filter 5 changes the polarization direction shown by arrow a in the figure to the polarization direction of the first polarizing filter 3 (
Since it is perpendicular to the arrow b), the P-polarized light 6b is absorbed by the second polarizing filter 5 and does not reach the display surface 4 of the display 2. Therefore, there is no possibility that the light will be reflected on this display surface 4.
一方、表示面４に情報を表示している光７ａは自然光で
あるから、第二の偏光フィルター５を通過して、その前
面８側で直線偏光７ｂとなる。従って操作者は、この直
線偏光７ｂにより、表示面４からの照明用光源ｌの反射
なしに、第二の偏光フィルター５の前面８側から表示面
４の表示情報を得ることができる。On the other hand, since the light 7a displaying information on the display surface 4 is natural light, it passes through the second polarizing filter 5 and becomes linearly polarized light 7b on the front surface 8 side thereof. Therefore, the operator can obtain display information on the display surface 4 from the front surface 8 side of the second polarizing filter 5 using the linearly polarized light 7b without reflection of the illumination light source l from the display surface 4.
（実施例） 次に本発明の実施例を図について説明する。(Example) Next, embodiments of the present invention will be described with reference to the drawings.
符号ｌは室内の天井９に設置した照明用光源を示すもの
で、この照明用光源１の下側に第一の偏光フィルター３
を設置している。この第一の偏光フィルター３は、後記
発光式表示器２方向の光をＰ偏光６ｂとするように設置
する。照明用光源１の構成、そしてそれに対応する第一
の偏光フィルター３の設置方法は前述した条件を満たす
限りは適宜である。この照明用光源１としては、外光を
含むものであり、この場合には第一の偏光フィルター３
は採光窓に設置すれば良い。The symbol l indicates a light source for illumination installed on the ceiling 9 in the room, and a first polarizing filter 3 is placed below this light source 1 for illumination.
is installed. This first polarizing filter 3 is installed so that light directed toward the light-emitting display device 2 (to be described later) becomes P-polarized light 6b. The configuration of the illumination light source 1 and the corresponding installation method of the first polarizing filter 3 are appropriate as long as the above-mentioned conditions are satisfied. The illumination light source 1 includes external light, and in this case, the first polarizing filter 3
should be installed in a daylight window.
符号２は発光式表示器であり、この発光式表示器２は、
コンピュータや制御機器の端末としてのＣＲＴ等の表示
器２とする他、家庭等に於けるテレビジョンも含むもの
である。Reference numeral 2 is a light-emitting display, and this light-emitting display 2 is
In addition to display devices 2 such as CRTs used as terminals for computers and control equipment, the display device also includes televisions in homes and the like.
しかして、この発光式表示器２の表示面４の前面側に第
二の偏光フィルター５を設置する。第二の偏光フィルタ
ー５は、その偏光方向（矢印ａ）を第一の偏光フィルタ
ー３の偏光方向（矢印ｂ）と直交させると共に、前記第
一の偏光フィルター３を通ったＰ偏光６ｂの入射角θが
ブルースター角となるように設置する。従ってこの第二
の偏光フィルター５は、その屈折率に応じて、前記所定
の角度となるように発光式表示器２の表示面４の前面側
に設置する。かかる際、第二の偏光フィルター５は、適
宜の角度調節機構により設置角度を調節可能とすれば、
対象とする照明用光源１に対しての、所定の角度に於け
る設置が容易である。A second polarizing filter 5 is then installed on the front side of the display surface 4 of the light-emitting display 2. The second polarizing filter 5 has its polarization direction (arrow a) orthogonal to the polarization direction (arrow b) of the first polarizing filter 3, and also has an incident angle of the P-polarized light 6b that has passed through the first polarizing filter 3. Install so that θ is Brewster's angle. Therefore, this second polarizing filter 5 is installed on the front side of the display surface 4 of the light-emitting display 2 so as to form the predetermined angle according to its refractive index. In this case, if the installation angle of the second polarizing filter 5 can be adjusted by an appropriate angle adjustment mechanism,
Installation at a predetermined angle with respect to the target illumination light source 1 is easy.
（発明の効果）
本発明は以上の通り、偏光フィルターを合理的に利用す
ることにより、照明用光源自体に工夫をせずに、十分な
照明光反射防止効果を低コストで得ることができ、そし
て照明用光源の機能並びに表示器の機能も損なわないと
いう効果がある。(Effects of the Invention) As described above, the present invention makes it possible to obtain a sufficient illumination light reflection prevention effect at low cost by rationally using a polarizing filter, without making any modifications to the illumination light source itself. Further, there is an effect that the function of the illumination light source and the function of the display device are not impaired.
第１図は本発明の基本概念を表した説明的斜視図、第２
図は本発明の実施例を表した夫々説明的断面図、説明的
平面図である。また第３図（ａ）、（ｂ）、（ｃ）は従
来例を表した説明的断面図である。
符号ｌ・・・照明用光源、２・・・発光式表示器、３・
・・第一の偏光フィルター、４・・・表示面、５・・・
第二の偏光フィルター、６ａ、６ｂ、７ａ、７ｂ−光、
８・・・前面、９・・・天井。
→
第３図（Ｃ）
ｄFigure 1 is an explanatory perspective view showing the basic concept of the present invention, Figure 2 is an explanatory perspective view showing the basic concept of the invention.
The figures are an explanatory sectional view and an explanatory plan view, respectively, showing embodiments of the present invention. Further, FIGS. 3(a), 3(b), and 3(c) are explanatory cross-sectional views showing a conventional example. Code l: Light source for illumination, 2: Light-emitting display, 3:
...first polarizing filter, 4...display surface, 5...
second polarizing filter, 6a, 6b, 7a, 7b - light;
8...Front, 9...Ceiling. → Figure 3 (C) d
Claims (2)
源側に、前記発光式表示器方向の光をＰ偏光とするよう
に第一の偏光フィルターを設置すると共に、発光式表示
器の表示面の前面側に、偏光方向を前記第一の偏光フィ
ルターの偏光方向と直交させると共に、前記第一の偏光
フィルターを通ったＰ偏光の入射角がブルースター角と
なるように第二の偏光フィルターを設置したことを特徴
とする発光式表示器に於ける照明光反射防止機構(1) Between the illumination light source and the light-emitting display, a first polarizing filter is installed on the illumination light source side so that the light directed toward the light-emitting display becomes P-polarized light, and a light-emitting display A second polarizer is placed on the front side of the display surface of the device so that the polarization direction is orthogonal to the polarization direction of the first polarizing filter, and the incident angle of the P-polarized light that has passed through the first polarizing filter is the Brewster angle. An illumination light reflection prevention mechanism in a light-emitting display device characterized by installing a polarizing filter of
器の表示面の前面側に、設置角度を調節可能に構成した
ことを特徴とする発光式表示器に於ける照明光反射防止
機構(2) The second polarizing filter according to claim 1 is an illumination light reflection prevention device in a light-emitting display device, characterized in that the second polarizing filter is arranged on the front side of the display surface of the light-emitting display device so that its installation angle can be adjusted. mechanism
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11563390A JPH0634140B2 (en) | 1990-05-01 | 1990-05-01 | Illumination light reflection prevention mechanism in light emitting display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11563390A JPH0634140B2 (en) | 1990-05-01 | 1990-05-01 | Illumination light reflection prevention mechanism in light emitting display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0412388A true JPH0412388A (en) | 1992-01-16 |
| JPH0634140B2 JPH0634140B2 (en) | 1994-05-02 |
Family
ID=14667478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11563390A Expired - Lifetime JPH0634140B2 (en) | 1990-05-01 | 1990-05-01 | Illumination light reflection prevention mechanism in light emitting display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0634140B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136852A (en) * | 1994-11-02 | 1996-05-31 | Olympus Optical Co Ltd | Optical device having eyepiece optical system |
| EP0778440A3 (en) * | 1995-12-05 | 1998-08-26 | Matsushita Electric Industrial Co., Ltd. | Backlighting device and color display device |
| WO2009139261A1 (en) * | 2008-05-15 | 2009-11-19 | 日東電工株式会社 | Video image appreciation system |
-
1990
- 1990-05-01 JP JP11563390A patent/JPH0634140B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136852A (en) * | 1994-11-02 | 1996-05-31 | Olympus Optical Co Ltd | Optical device having eyepiece optical system |
| EP0778440A3 (en) * | 1995-12-05 | 1998-08-26 | Matsushita Electric Industrial Co., Ltd. | Backlighting device and color display device |
| US5963280A (en) * | 1995-12-05 | 1999-10-05 | Matsushita Electric Industrial Co., Ltd. | Backlighting device and color display device |
| US6144424A (en) * | 1995-12-05 | 2000-11-07 | Matsushita Electric Industrial Co., Ltd. | Backlighting device |
| WO2009139261A1 (en) * | 2008-05-15 | 2009-11-19 | 日東電工株式会社 | Video image appreciation system |
| JP2009276574A (en) * | 2008-05-15 | 2009-11-26 | Nitto Denko Corp | Video viewing facility |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0634140B2 (en) | 1994-05-02 |
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