JPH0466993A - Small-sized display device - Google Patents
Small-sized display deviceInfo
- Publication number
- JPH0466993A JPH0466993A JP17692190A JP17692190A JPH0466993A JP H0466993 A JPH0466993 A JP H0466993A JP 17692190 A JP17692190 A JP 17692190A JP 17692190 A JP17692190 A JP 17692190A JP H0466993 A JPH0466993 A JP H0466993A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- emitting array
- array
- prism
- 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
- 238000003491 array Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
(イ)産業上の利用分野
本発明は、コンピュータやビデオテープレコーダ等の各
種電子機器に好適な小型ディスプレイ装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a small display device suitable for various electronic devices such as computers and video tape recorders.
(ロ)従来の技術
現在、上記のような電子機器のディスプレイ装置は大型
化や薄型化など多種多様な動向を呈しているが、その一
つの流れとしてパーソナル化の傾向がある。(B) Conventional Technology Presently, the display devices of electronic devices as described above are exhibiting various trends such as becoming larger and thinner, and one of these trends is toward personalization.
このようなパーソナル用途の小型ディスプレイ装置の一
例として、複数個のLED (発光ダイオード)素子を
直線状に配列した発光アレイによる水平走査方向の一次
元映像を振動ミラーによって垂直走査方向に振動させる
ことにより二次元映像を得、この二次元映像を拡大して
観察するようにしたものが、特開平1−279284号
公報〔GO9F 910 O)で提案されている。第
4図はこの従来装置の概略構成を示しており、(1)は
紙面に垂直な方向に多数のLED素子を配列してなる発
光アレイ、(2)はこの発光アレイによる一次元映像を
図示矢印方向に回転振動しながら反射させる振動ミラー
、(3)はこの振動ミラーによって得る二次元映像(虚
像)(A)を拡大して観察者の目(B)に導くための凸
レンズである。As an example of such a small display device for personal use, a one-dimensional image in the horizontal scanning direction produced by a light emitting array in which multiple LED (light emitting diode) elements are arranged in a linear manner is vibrated in the vertical scanning direction by a vibrating mirror. Japanese Patent Laid-Open No. 1-279284 (GO9F 910 O) proposes a method in which a two-dimensional image is obtained and the two-dimensional image is enlarged for observation. Figure 4 shows a schematic configuration of this conventional device, where (1) shows a light-emitting array formed by arranging a large number of LED elements in a direction perpendicular to the plane of the paper, and (2) shows a one-dimensional image produced by this light-emitting array. A vibrating mirror (3) is a convex lens that magnifies a two-dimensional image (virtual image) (A) obtained by this vibrating mirror and guides it to the observer's eyes (B).
一方、(4)はコンポジット映像信号が入力される入力
端子、(5)はその入力映像信号の特性補正や増幅等を
行う映像信号入力回路、(6)はその出力映像信号から
同期信号と映像信号を分離する同期/映像分離回路であ
る。そして、(7)はその分離された水平、垂直各同期
信号を得て後述の各回路の制御を行う制御回路、(8)
はその制御回路によって後述するバッファメモリの読出
しに同期したミラー駆動パルスを作成する駆動パルス作
成回路、(9)はその駆動パルスに応答して駆動コイル
(10)(10)を励磁することによって前記振動ミラ
ー(2)を回転振動させるミラー駆動回路である。また
、(11)は前述の回路(6)からの映像信号を7し一
ム単位で格納するバッファメモリ、(12)は前記制御
回路(7)によりバッファメモリ(11)から−水平ラ
イン分づつ読み出される映像信号を前記発光アレイ(1
)に印加させるLED駆動回路である。On the other hand, (4) is an input terminal into which a composite video signal is input, (5) is a video signal input circuit that performs characteristic correction and amplification of the input video signal, and (6) is a synchronization signal and video signal from the output video signal. This is a synchronization/video separation circuit that separates signals. (7) is a control circuit that obtains the separated horizontal and vertical synchronization signals and controls each circuit described later; (8)
(9) is a drive pulse generation circuit that uses its control circuit to generate mirror drive pulses synchronized with the readout of the buffer memory, which will be described later; This is a mirror drive circuit that rotates and vibrates the vibrating mirror (2). Further, (11) is a buffer memory that stores the video signal from the circuit (6) described above in units of 7 frames, and (12) is a buffer memory that stores the video signal from the aforementioned circuit (7) in units of -horizontal lines from the buffer memory (11). The video signal to be read out is transmitted to the light emitting array (1
) is an LED drive circuit that applies voltage to
そして、この装置は、第5図に示すような小型の筐体(
14)内に収納され、頭部に装着する等の方法で使用者
の目(B)の前方位置に直接配置されるようになってい
る。なお、同図で第4図と対応する構成要素には同一番
号を付しているが、(15)はミラー駆動回路(9)を
除く各回路が搭載されたプリント基板を表している。This device is housed in a small casing (as shown in Figure 5).
14), and is placed directly in front of the user's eyes (B), such as by being worn on the head. In this figure, components corresponding to those in FIG. 4 are given the same numbers, and (15) represents a printed circuit board on which each circuit except the mirror drive circuit (9) is mounted.
(ハ)発明が解決しようとする問題点
上記従来装置によれば、装置全体を充分小型化でき、し
かも、比較的大きい映像を観察できるがモノクロ表示で
あるという大きな欠点があった。(c) Problems to be Solved by the Invention According to the above-mentioned conventional device, the entire device can be sufficiently miniaturized and a relatively large image can be observed, but it has a major drawback in that it is a monochrome display.
そこで、本発明は、上記のように一次元状の発光アレイ
と振動ミラーと拡大用レンズとを使用する小型ディスプ
レイ装置に於いて、光学系の複雑化、装置の大型化を伴
うことなく、フルカラー化を実現することを目的とする
。Therefore, the present invention provides a small display device that uses a one-dimensional light emitting array, a vibrating mirror, and a magnifying lens as described above, without complicating the optical system or increasing the size of the device. The aim is to realize the
(ニ)問題点を解決するための手段
本発明のディスプレイ装置では、複数個のRGB各LE
D素子をそれぞれ直線状に配列してなる3個の発光アレ
イと、RB各反射面を備え上記各発光アレイからの光を
合成するプリズム手段と、このプリズム手段からの合成
出力光を反射させる振動ミラーと、拡大用レンズ手段と
を組み合わせてなる。(d) Means for solving the problem In the display device of the present invention, each of a plurality of RGB LEs
three light-emitting arrays each having D elements arranged in a straight line; a prism means for combining light from each of the light-emitting arrays including RB reflecting surfaces; and a vibration for reflecting the combined output light from the prism means. It is a combination of a mirror and a magnifying lens means.
(ホ)作用
上記の構成により、前記各発光アレイからの光が前記プ
リズム手段で合成され、その合成出力光が振動ミラーで
反射されることにより二次元のフルカラー映像が表示さ
れ、そのカラー映像が前記レンズ手段によって拡大され
て観察される。(E) Effect With the above configuration, the lights from each of the light emitting arrays are combined by the prism means, and the combined output light is reflected by the vibrating mirror to display a two-dimensional full color image. The image is magnified and observed by the lens means.
(へ)実施例
第1図及び第2図は本発明による小型ディスプレイ装置
の一実施例を表しており、第1図はその動作原理を示す
概略図である。同図に於いて、第4図と同一構成要素に
は同一番号を付して説明を省略し、それ以外の部分につ
いてのみ説明する。(F) Embodiment FIGS. 1 and 2 show an embodiment of a small display device according to the present invention, and FIG. 1 is a schematic diagram showing the principle of operation thereof. In this figure, the same components as those in FIG. 4 are given the same numbers and explanations will be omitted, and only the other parts will be explained.
(21)は第2図(a)の如く複数個の赤色LED素子
(Ri)を直線状に配列してなる2発光アレイ、(22
)(23)はそれぞれ同様の6発光アレイ及び8発光ア
レイ、(24)はその各入射端面に上記各発光アレイ(
21)(22)(23)が取り付けられた色合成用のプ
リズム手段であり、その出射面(24a)が振動ミラー
(2)の反射面に対向するように配置されている。(21) is a two-light emitting array formed by linearly arranging a plurality of red LED elements (Ri) as shown in Fig. 2(a), (22)
) (23) are the same 6 light-emitting arrays and 8 light-emitting arrays, respectively, and (24) are the above-mentioned light-emitting arrays (
21, 22, and 23 are attached prism means for color synthesis, and the output surface (24a) thereof is arranged so as to face the reflection surface of the vibrating mirror (2).
前記プリズム手段(24)は第2図(b)に拡大して示
すように紙面に垂直な方向を厚み方向とする3個の板状
プリズム(25)〜(27)が互いに貼着されてなり、
そのR用プリズム(25)のG用プリズム(26)との
接合thi(25a)にはR−反射膜が、又、B用プリ
ズム(27)のR用プリズム(25)との接合面(26
a)にはB反射膜がそれぞれ形成されているが、G用プ
リズム(26)のR用プリズム(25)との接合面(2
6a)にはそれらの反射膜が何ら形成されていない構造
となっている。尚、これら各プリズム(25)〜(27
)はプリズムと略同−屈折率の透明接着剤によって互い
に貼着されている。As shown in an enlarged view in FIG. 2(b), the prism means (24) is made up of three plate-shaped prisms (25) to (27) stuck to each other, the thickness direction of which is perpendicular to the plane of the paper. ,
There is an R-reflection film on the junction thi (25a) of the R prism (25) with the G prism (26), and on the junction surface (26) of the B prism (27) with the R prism (25).
A B reflective film is formed on each of a), but the bonding surface (2) of the G prism (26) with the R prism (25)
6a) has a structure in which no such reflective film is formed. In addition, each of these prisms (25) to (27)
) are attached to each other with a transparent adhesive having approximately the same refractive index as the prism.
したがって、この構造によれば、G発光アレイ(22)
からの光(g )はプリズム(26)(25)(27)
内をこの順に直進して出射面(24a)から出るのに対
して、R発光アレイ(21)からの光b)は接合面(2
5b)で全反射されたのち接合面(25a)で選択反射
されてB用プリズム(27)に入り、上記6発光アレイ
(22)からの光(g)と合成されて上記出射面(24
a)から出ることになる。同様に8発光アレイ(22)
の光(b)は上記出射面(24a)で−旦全反射された
のち接合面(24a)で選択反射されることによって6
発光アレイ(22)からの光(g)と合成されて上記出
射面(24a)から出射する。その際、上記各アレイ(
21)(22)(23)からの各党(r)(g)(b)
の光軸が出射面(24a)で完全に一致するように、各
プリズムの各端面の傾斜角度が設定されでいる。Therefore, according to this structure, the G light emitting array (22)
The light (g) from the prism (26) (25) (27)
The light b) from the R light emitting array (21) travels straight in this order and exits from the exit surface (24a), while the light b) from the R light emitting array (21)
5b), is selectively reflected at the cemented surface (25a), enters the B prism (27), is combined with the light (g) from the six light emitting arrays (22), and is emitted from the exit surface (24).
It will come out of a). Similarly 8 light emitting array (22)
The light (b) is totally reflected at the exit surface (24a) and then selectively reflected at the bonding surface (24a), resulting in 6
It is combined with light (g) from the light emitting array (22) and output from the output surface (24a). At that time, each of the above arrays (
Parties from 21) (22) (23) (r) (g) (b)
The inclination angle of each end face of each prism is set so that the optical axes of the prisms completely coincide with each other at the exit surface (24a).
したがって、RGB各発光発光アレイ1)(22)(2
3)からの光の合成による一水平うイン分のカラー映像
が振動ミラー(2)に入射されることになり、それによ
り二次元のカラー映像(A)が現れ、その拡大像が第4
図の場合と同様にレンズ(3)によって観察されるので
ある。Therefore, each RGB light emitting array 1)(22)(2
A color image corresponding to one horizontal cavity is made incident on the vibrating mirror (2) by combining the light from 3), thereby a two-dimensional color image (A) appears, and its enlarged image is the fourth image.
As in the case shown in the figure, it is observed through the lens (3).
なお、第1図の映像信号処理系において第4因と変わる
ところは、入力端子(4)にカラーコンポジット映像信
号が入力される点と、そのコンポジット信号からRGB
各信号を分離復調するためのカラー復調分離回路(13
)が追加されている点と、その各RGB各信号に対して
バッファメモリ(11)とLED駆動回路(12)にそ
れぞれ専用のメモリ部(IIR)(IIG)(IIB)
及び回路部(12R)(12G)(12B)が設けられ
ている点であるが、その動作はこれまでの説明から容易
に理解されるであろうから説明を省略する。The difference from the fourth factor in the video signal processing system in Figure 1 is that a color composite video signal is input to the input terminal (4), and RGB
Color demodulation and separation circuit (13) for separating and demodulating each signal
) are added, and memory sections (IIR) (IIG) (IIB) are dedicated to the buffer memory (11) and LED drive circuit (12) for each RGB signal.
and circuit sections (12R), (12G), and (12B), but their operations will be easily understood from the previous explanations, so their explanations will be omitted.
また、第3図は他の実施例の光学系を示しており、第1
図と対応する部分には同一番号を付して説明を省略する
が、この実施例ではプリズム手段(24)を次のような
4個の二等辺三角形板状のプリズム(31)〜(34)
によって構成している。即ち、これら4個のプリズムは
第2図のものと同様に透明接着剤によって互いに貼着さ
れるが、その第1プリズム(31)の一方の接合面(3
1a)にR反射膜が、第2プリズムの一方の接合面(3
2a)にB反射膜がそれぞれ形成され、第4プリズム(
34)の接合面(34a)(34b)にB反射膜とR反
射膜がか形成され、第3プリズム(33)の両接合面(
33a)(33b)にはそれらの反射膜が何等形成され
ていない構造となっている。Moreover, FIG. 3 shows the optical system of another embodiment, and the first
Parts corresponding to those in the figures are given the same numbers and explanations are omitted, but in this embodiment, the prism means (24) is composed of the following four isosceles triangular plate-shaped prisms (31) to (34).
It is composed of That is, these four prisms are attached to each other with a transparent adhesive similar to the one in FIG. 2, but one bonding surface (3
1a), an R reflective film is placed on one joint surface (3) of the second prism.
A B reflective film is formed on each of the fourth prism (2a) and the fourth prism (
A B reflective film and an R reflective film are formed on the joint surfaces (34a) and (34b) of the third prism (34), and both the joint surfaces (34) of the third prism (33)
33a) and 33b have a structure in which no reflective film is formed thereon.
この構造のプリズム手段(24)でも、各発光アレイ(
21)(22)(23)からの各党(r)(g)(b)
が合成されるのは図から容易に理解されるであろう。Even with this structure of the prism means (24), each light emitting array (
Parties from 21) (22) (23) (r) (g) (b)
It will be easy to understand from the figure that these are synthesized.
(ト)発明の効果
以上の如く本発明に依れば、光学系の複雑化、装置の大
型化を伴うことなくフルカラーの映像を実現でき、しか
も、パーソナル用途として充分小型化された小型ディス
プレイ装置を提供できる。(G) Effects of the Invention As described above, according to the present invention, full-color images can be realized without complicating the optical system or increasing the size of the device, and moreover, the small display device is sufficiently small for personal use. can be provided.
第1図〜第2図は本発明の一実施例を示し、第1図は動
作原理を示す概略図、第2図(a)(b)は主要構成部
品を示す図、第3図は他の実施例の光学系を示す斜視図
である。
第4図及び第5図は従来の小型ディスプレイ装置の一例
を示し、第4図はその動作原理を示す概略図、第5図は
そのディスプレイ装置の筐体内への配置状態を一部断面
して示す図である。
(2):振動ミラー、(3):拡大用凸レンズ、(9)
−:ミラー駆動回路、(21)(22)(23) :発
光アレイ、(24) ニブリズム手段Figures 1 and 2 show one embodiment of the present invention, with Figure 1 being a schematic diagram showing the principle of operation, Figures 2 (a) and (b) showing main components, and Figure 3 showing other components. FIG. 3 is a perspective view showing the optical system of the embodiment. 4 and 5 show an example of a conventional small display device, FIG. 4 is a schematic diagram showing its operating principle, and FIG. 5 is a partially cross-sectional view of how the display device is arranged in a housing. FIG. (2): Vibrating mirror, (3): Convex magnifying lens, (9)
-: Mirror drive circuit, (21) (22) (23): Light emitting array, (24) Nibrism means
Claims (1)
発光アレイと、複数の青色LEDを直線状に配列して成
るB発光アレイと、複数の緑色LEDを直線状に配列し
てなるG発光アレイと、互いに組み合わされる複数個の
プリズムの一部にR反射面及びB反射面が形成され、前
記各発光アレイからの光がそれぞれ入射され、その各光
を合成した合成カラー出力光を出射する色合成用プリズ
ム手段と、 前記プリズム手段からのカラー合成光の反射方向を周期
的に変化させるための振動ミラーと、前記各発光アレイ
に基づくカラー二次元画像を得るべくその各発光アレイ
に供給される映像信号に同期して前記振動ミラーを振動
させる駆動手段と、 前記振動ミラーによる二次元画像の拡大虚像を得る拡大
用レンズ手段と、 を備えてなる小型ディスプレイ装置。(1) R formed by arranging multiple red LED elements in a straight line
A light emitting array, a B light emitting array consisting of a plurality of blue LEDs arranged in a straight line, a G light emitting array consisting of a plurality of green LEDs arranged in a straight line, and a part of a plurality of prisms combined with each other. a color synthesis prism means formed with a reflective surface and a B reflective surface, into which light from each of the light emitting arrays is incident, and which emits composite color output light by combining the respective lights; and color composite light from the prism means. a vibrating mirror for periodically changing the direction of reflection of the light emitting array; and a driving means for vibrating the vibrating mirror in synchronization with a video signal supplied to each light emitting array to obtain a color two-dimensional image based on each of the light emitting arrays. A small display device comprising: and an enlargement lens means for obtaining an enlarged virtual image of the two-dimensional image by the vibrating mirror.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17692190A JP2823330B2 (en) | 1990-07-04 | 1990-07-04 | Small display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17692190A JP2823330B2 (en) | 1990-07-04 | 1990-07-04 | Small display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0466993A true JPH0466993A (en) | 1992-03-03 |
JP2823330B2 JP2823330B2 (en) | 1998-11-11 |
Family
ID=16022094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17692190A Expired - Fee Related JP2823330B2 (en) | 1990-07-04 | 1990-07-04 | Small display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2823330B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5657165A (en) * | 1995-10-11 | 1997-08-12 | Reflection Technology, Inc. | Apparatus and method for generating full-color images using two light sources |
-
1990
- 1990-07-04 JP JP17692190A patent/JP2823330B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5657165A (en) * | 1995-10-11 | 1997-08-12 | Reflection Technology, Inc. | Apparatus and method for generating full-color images using two light sources |
Also Published As
Publication number | Publication date |
---|---|
JP2823330B2 (en) | 1998-11-11 |
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