JPH08304733A - Display device - Google Patents

Display device

Info

Publication number
JPH08304733A
JPH08304733A JP7105688A JP10568895A JPH08304733A JP H08304733 A JPH08304733 A JP H08304733A JP 7105688 A JP7105688 A JP 7105688A JP 10568895 A JP10568895 A JP 10568895A JP H08304733 A JPH08304733 A JP H08304733A
Authority
JP
Japan
Prior art keywords
lens
picture
display device
distance
screen
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
JP7105688A
Other languages
Japanese (ja)
Inventor
Masao Yamamoto
正男 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCALA KK
Original Assignee
SCALA KK
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 SCALA KK filed Critical SCALA KK
Priority to JP7105688A priority Critical patent/JPH08304733A/en
Publication of JPH08304733A publication Critical patent/JPH08304733A/en
Pending legal-status Critical Current

Links

Landscapes

  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE: To reduce the fatigue of eyes at the time of continuously using a display device by adjusting the relation between the object distance and the focal distance of an enlarging lens for a picture being an enlarged object and switching a short distance vision state and a long distance vision state. CONSTITUTION: A picture aperture 14 for viewing the picture for ordinary vision as an enlarged image obtained by enlarging the picture of a compact display means 16 consisting of a liquid crystal display element 25 and a control unit 26 for the display element 25 by the enlarging lens 18 is provided on the front surface of a main body part 12 supported by a supporting leg 11 which is provided erectly from a base board 10 and whose height is adjusted. An enlarging lens mechanism 15 is constituted so that the lens 18 is held by a movable unit 17, and a lens holding barrel 20 whose outer periphery is screw-cut is moved in accordance with the rotation of a feeding screw ring 21 screwed in the barrel 20. A control unit 24 controls a driving motor 23 for the ring 21, and the position of the lens 18 based on a program stored in the unit, so that the image distance of the picture for ordinary vision is changed and the short distance vision state and the long distance vision state are switched.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device.

【0002】[0002]

【従来の技術】表示装置はコンピュータ端末機器を初め
として多種多様な形態で多くの分野に使用されている
が、このような表示装置の多用化につれ、表示装置の使
用に伴う各種の障害が問題となってきている。目の疲労
やこれに伴う障害はその代表的なものである。この表示
装置の使用による目の疲労は、目を近業状態で長時間継
続的に使うことがその主な原因とされている。一方この
ような目の疲労は、近業状態に適当な間隔で遠方視を挟
むことにより相当程度軽減できることも知られており、
表示装置の使用についての心得として提言されている。
しかし実際問題としては表示装置を使う作業を中断して
遠方視を挟んだりすることは実行しがたいのが実情であ
る。
2. Description of the Related Art Display devices are used in many fields in various forms such as computer terminal equipment. With the increasing use of such display devices, various problems associated with the use of the display devices become a problem. Is becoming. Eye fatigue and the resulting disorders are typical. Eye fatigue caused by the use of this display device is mainly caused by continuous use of the eyes for a long time in a near-work state. On the other hand, it is also known that such eye fatigue can be considerably reduced by sandwiching distance vision at appropriate intervals in near-work conditions,
It is recommended as a precaution for using display devices.
However, as a practical matter, it is difficult to perform the operation of using the display device to pinch the distance vision.

【0003】[0003]

【発明が解決しようとする課題】このような事情のもと
になされたのが本発明で、表示装置を使用し続ける状態
でも目に遠方視状態を与えることで表示装置の継続使用
による目の疲労を軽減できるようにすることを目的とし
ている。
SUMMARY OF THE INVENTION The present invention has been made under these circumstances, and by providing a far-sighted state to the eyes even when the display device is continuously used, the eyes can be continuously used. The purpose is to be able to reduce fatigue.

【0004】[0004]

【課題を解決するための手段】このような目的のために
本発明では、小型表示手段の画面を拡大レンズで拡大し
た拡大像として通常視用の画面を与える構造の表示装置
とし、且つ拡大対象の画面に対する拡大レンズの物体距
離と拡大レンズの焦点距離との関係を調節する調節手段
を設け、この調節手段による調節で通常視用の画面の像
距離を変化させることで、近業状態と遠方視状態との切
り換えをなせるようにしている。
To this end, the present invention provides a display device having a structure for giving a screen for normal viewing as an enlarged image obtained by enlarging the screen of a small-sized display means with a magnifying lens, and an object to be magnified. Is equipped with adjusting means for adjusting the relationship between the object distance of the magnifying lens and the focal length of the magnifying lens with respect to the screen, and by changing the image distance of the screen for normal vision by adjusting by this adjusting means It is designed so that it can be switched to the visual state.

【0005】この表示装置の原理構造を図解すると図2
に示すようになる。即ち小型の表示手段1の画面2を拡
大レンズ3で拡大して得られる拡大像Pが通常視用の画
面、つまり一般的な表示装置の画面と同等程度で表示内
容を視認できるような大きさの画面となる。画面2は、
拡大レンズ3の物体焦点Fbの内側に位置させられ、そ
の拡大像Pは虚像として画面2の後方に結像している。
これについて物体距離a、像距離b、及び焦点距離fと
の間にある関係;1/a+1/b=1/fから、aを変
化させることでbが変化し、aをfに近づけるほどbが
大きくなってa=fにおいてbは無限となり、拡大像P
は無限遠に結像する。
FIG. 2 illustrates the principle structure of this display device.
It becomes as shown in. That is, the magnified image P obtained by magnifying the screen 2 of the small-sized display means 1 with the magnifying lens 3 is of a size such that the display contents can be visually recognized at the same level as the screen for normal viewing, that is, the screen of a general display device. Screen. Screen 2 is
The magnified lens 3 is located inside the object focus Fb of the magnifying lens 3, and its magnified image P is formed behind the screen 2 as a virtual image.
About this, the relationship between the object distance a, the image distance b, and the focal length f; from 1 / a + 1 / b = 1 / f, b is changed by changing a, and as a is brought closer to f, b Becomes large and b becomes infinite when a = f, and the enlarged image P
Forms an image at infinity.

【0006】したがって画面2を固定した状態で拡大レ
ンズ3の位置を変えるか、あるいは例えばズームレンズ
のように焦点距離を可変とするレンズを拡大レンズ3に
用いて焦点距離を変化させることで、像距離Lを変える
ことができる。例えば通常は明視の距離に拡大像Pが結
像するような位置に拡大レンズ3を位置させておき、適
当な時間間隔で拡大レンズ3の位置を変え、数メートル
〜数十メートルの光路長を与える位置に拡大像Pを結像
させるようにする。この結果、表示装置を使用し続ける
状態でも目に遠方視状態を与えることができ、表示装置
の継続使用による目の疲労を軽減することが可能とな
る。なお図中のEは目であり、一般的には目Eを拡大レ
ンズ3に対し接眼的に近づけて拡大像Pを見るようにす
る。
Therefore, the image is changed by changing the position of the magnifying lens 3 with the screen 2 fixed, or changing the focal length by using a lens having a variable focal length such as a zoom lens as the magnifying lens 3. The distance L can be changed. For example, normally, the magnifying lens 3 is placed at a position where the magnified image P is formed at a distance of clear vision, and the position of the magnifying lens 3 is changed at an appropriate time interval to obtain an optical path length of several meters to several tens of meters. The enlarged image P is formed at a position where As a result, it is possible to provide the eye with a distance vision state even when the display device is continuously used, and it is possible to reduce eye fatigue due to continuous use of the display device. It should be noted that E in the figure is an eye, and in general, the eye E is brought close to the magnifying lens 3 in an eyepiece manner so that the magnified image P is viewed.

【0007】[0007]

【実施例】以下本発明の一実施例を説明する。本実施例
による表示装置は、図1に示すように、スタンド構造と
されている。つまりベース盤10から立設した高さ調整
可能な支持脚11に本体部12を支持させた構造となっ
ている。その本体部12は、ケーシング13で囲われて
おり、このケーシング13の前面には上述した拡大像P
(図2)を見るための画面開口14が設けられている。
また本体部12は、その内部に拡大レンズ機構15及び
表示手段16を内蔵している。
EXAMPLE An example of the present invention will be described below. The display device according to the present embodiment has a stand structure as shown in FIG. That is, the structure is such that the main body 12 is supported by the height-adjustable support legs 11 which are erected from the base board 10. The main body 12 is surrounded by a casing 13, and the enlarged image P is formed on the front surface of the casing 13.
A screen opening 14 for viewing (FIG. 2) is provided.
Further, the main body 12 has a magnifying lens mechanism 15 and a display means 16 built therein.

【0008】拡大レンズ機構15は、調節手段である可
動ユニット17に拡大レンズ18を保持させた構造とな
っている。その可動ユニット17は、外周にネジを切っ
てあるレンズ保持筒20がこれに螺合している送り用ネ
ジ環21の回転に応じて軸受筒22で支持されつつ矢印
Xの如く移動する構造とされ、その送り用ネジ環21
は、駆動源であるモータ23の駆動力を受けて回転する
ようになっている。またモータ23を制御ユニット24
で制御し、制御ユニット24に格納してあるプログラム
に基づいて上述したような拡大レンズ18の位置制御を
なせるようにしてある。
The magnifying lens mechanism 15 has a structure in which a magnifying lens 18 is held by a movable unit 17 which is an adjusting means. The movable unit 17 has a structure in which a lens holding cylinder 20 having an outer peripheral thread is moved as shown by an arrow X while being supported by a bearing cylinder 22 in accordance with the rotation of a feed screw ring 21 screwed to the lens holding cylinder 20. And the feed screw ring 21
Is rotated by receiving the driving force of the motor 23 which is a driving source. Further, the motor 23 is connected to the control unit 24
The position control of the magnifying lens 18 is performed based on the program stored in the control unit 24.

【0009】表示手段16についてはこの例では液晶式
を用いている。即ち表示手段16は、液晶表示素子25
とこれを制御する制御ユニット26からなっている。液
晶表示素子25は、その画面の一辺が20〜25mm程
度の大きさのものを用い、これを拡大レンズ18で8倍
程度に拡大して図2に示すような拡大像Pとするように
してある。
The display means 16 is of a liquid crystal type in this example. That is, the display means 16 is the liquid crystal display element 25.
And a control unit 26 for controlling this. As the liquid crystal display element 25, one having a size of one side of the screen of 20 to 25 mm is used, and this is magnified about 8 times by a magnifying lens 18 to obtain a magnified image P as shown in FIG. is there.

【0010】以上の表示装置を例えばコンピュータの表
示端末として使用するには、これを机の上などに置き、
その支持脚11を調整して使用者が椅子に掛けた状態で
画面開口14が最適な高さ位置となるようにし、この状
態で画面開口14に接眼的に目を合わせて用いる。
To use the above display device as a display terminal of a computer, place it on a desk or the like,
The support leg 11 is adjusted so that the screen opening 14 is at the optimum height position when the user hangs it on the chair, and in this state, the screen opening 14 is used by eye-eye adjustment.

【0011】以上の実施例は、ルーペタイプの拡大レン
ズ18を用い、これの位置を機械的に移動させるように
しているが、これに代えて、焦点距離を可変とするレン
ズを拡大レンズに用い、焦点距離を変えることで上述の
aとfの関係を変えるようにすることも可能である。そ
のようなレンズとしては、例えばズームレンズがあり、
また内部に液体を充填した構造で形成し、この液体の充
填量を調節することで、全体の厚みや曲面の曲率を変え
れるようにしたレンズが挙げられる。また上記実施例で
は、画質を考慮して液晶式の表示手段を用いているが、
これに代えて他の方式の各種表示手段、例えばCRT式
の表示手段、あるいは薄膜EL式の表示手段などを用い
ることもできる。さらに本発明による表示装置の構造
は、両眼視差を利用したいわゆる立体表示装置に適用す
ることも可能で、その場合には拡大レンズとその調節手
段及び表示手段を2系統で設けることになる。
In the above embodiment, the magnifying lens 18 of the loupe type is used and the position of the magnifying lens is mechanically moved. Instead of this, a lens having a variable focal length is used as the magnifying lens. , It is also possible to change the relationship between a and f by changing the focal length. As such a lens, for example, there is a zoom lens,
Further, there is a lens which is formed with a structure in which a liquid is filled inside, and the total thickness and the curvature of a curved surface can be changed by adjusting the filling amount of this liquid. In the above embodiment, the liquid crystal display means is used in consideration of the image quality.
Instead of this, various other types of display means such as a CRT type display means or a thin film EL type display means can be used. Further, the structure of the display device according to the present invention can be applied to a so-called stereoscopic display device using binocular parallax, and in that case, the magnifying lens, its adjusting means and display means are provided in two systems.

【0012】[0012]

【発明の効果】以上説明してきた如く、本発明による
と、表示装置を使用し続ける状態でも目に遠方視状態を
与えることができ、表示装置の継続使用による目の疲労
を軽減することができる。
As described above, according to the present invention, it is possible to give a far-sighted state to the eye even when the display device is continuously used, and it is possible to reduce eye fatigue due to continuous use of the display device. .

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例による表示装置の構成図。FIG. 1 is a configuration diagram of a display device according to an embodiment of the present invention.

【図2】本発明による表示装置の原理構造図。FIG. 2 is a principle structural diagram of a display device according to the present invention.

【符号の説明】[Explanation of symbols]

16 表示手段 17 可動ユニット(調節手段) 18 拡大レンズ P 拡大像 16 display means 17 movable unit (adjusting means) 18 magnifying lens P magnified image

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 小型表示手段の画面を拡大レンズで拡大
した拡大像として通常視用の画面を与えるようにしてな
る表示装置において、拡大対象の画面に対する拡大レン
ズの物体距離と拡大レンズの焦点距離との関係を調節す
る調節手段を設け、この調節手段による調節で通常視用
の画面の像距離を変化させることで、近業状態と遠方視
状態との切り換えをなせるようにしたことを特徴とする
表示装置。
1. An object distance of a magnifying lens and a focal length of the magnifying lens with respect to a magnifying target screen in a display device configured to give a screen for normal vision as a magnified image obtained by magnifying the screen of a compact display means with a magnifying lens. It is characterized in that adjustment means is provided to adjust the relationship with, and the image distance of the screen for normal vision is changed by adjustment by this adjustment means, thereby enabling switching between the near-work state and the far-sighted state. And display device.
JP7105688A 1995-04-28 1995-04-28 Display device Pending JPH08304733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7105688A JPH08304733A (en) 1995-04-28 1995-04-28 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7105688A JPH08304733A (en) 1995-04-28 1995-04-28 Display device

Publications (1)

Publication Number Publication Date
JPH08304733A true JPH08304733A (en) 1996-11-22

Family

ID=14414349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7105688A Pending JPH08304733A (en) 1995-04-28 1995-04-28 Display device

Country Status (1)

Country Link
JP (1) JPH08304733A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006292884A (en) * 2005-04-07 2006-10-26 Sony Corp Image display device and method
JP2007264210A (en) * 2006-03-28 2007-10-11 Denso Corp Display apparatus
CN105869534A (en) * 2016-05-28 2016-08-17 安徽富煌和利时科技股份有限公司 Vehicle-mounted LED (Light-emitting Diode) display device of bus
JP2017068232A (en) * 2015-09-30 2017-04-06 中強光電股▲ふん▼有限公司 Display device
CN108873357A (en) * 2018-05-08 2018-11-23 成都冠禹科技有限公司 It is a kind of to see sheet devices with the medical imaging for adjusting enlarged structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006292884A (en) * 2005-04-07 2006-10-26 Sony Corp Image display device and method
JP2007264210A (en) * 2006-03-28 2007-10-11 Denso Corp Display apparatus
JP2017068232A (en) * 2015-09-30 2017-04-06 中強光電股▲ふん▼有限公司 Display device
CN105869534A (en) * 2016-05-28 2016-08-17 安徽富煌和利时科技股份有限公司 Vehicle-mounted LED (Light-emitting Diode) display device of bus
CN105869534B (en) * 2016-05-28 2018-11-20 安徽富煌科技股份有限公司 A kind of bus vehicle LED display device
CN108873357A (en) * 2018-05-08 2018-11-23 成都冠禹科技有限公司 It is a kind of to see sheet devices with the medical imaging for adjusting enlarged structure

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