JP2013205602A - Three-dimensional image display method - Google Patents

Three-dimensional image display method Download PDF

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JP2013205602A
JP2013205602A JP2012074259A JP2012074259A JP2013205602A JP 2013205602 A JP2013205602 A JP 2013205602A JP 2012074259 A JP2012074259 A JP 2012074259A JP 2012074259 A JP2012074259 A JP 2012074259A JP 2013205602 A JP2013205602 A JP 2013205602A
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dimensional
image display
dimensional image
display method
beam
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Hongen Liao
洪恩 廖
Makoto Iwahara
誠 岩原
Takesumi Doi
健純 土肥
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Dhs:Kk
有限会社ディー・エッチ・エス
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PROBLEM TO BE SOLVED: To provide a three-dimensional image display method that employs a transmission-type two-dimensional scan method, is not affected by aberration of a lens array, and eliminates the need of a flat display with high pixel density, with a simple light path.SOLUTION: A three-dimensional image display method includes the steps of: two-dimensionally arranging a plurality of basic units that two-dimensionally scan light beams emitted from a beam light source 9 and project the light beams in the air; and inputting a predetermined image signal 13 into the respective basic units to modulate brightness of the beam light source in accordance with the movement of the two-dimensional scan. The three-dimensional image display method employs transmission-type two-dimensional scan to simplify a configuration of an IV display device.

Description

本発明は三次元表示装置に係り、高精細の三次元画像を簡単な構成で表示する方法に関する。 The present invention relates to a three-dimensional display apparatus, a method of displaying a three-dimensional image of high definition with a simple structure.

図1は従来のIPの表示の状態を示す図である。 Figure 1 is a diagram showing a display state of a conventional IP.

マイクロ凸レンズ二次元アレイ1の各レンズの大きさ、互いの間隔は、目的に応じて、0.1ミリから数十ミリ程度が選ばれる。 Micro convex lens two-dimensional array each lens of the size of one, each other interval, depending on the purpose, several tens of millimeters is chosen from 0.1 mm.

平面ディスプレイ2は、この図では液晶ディスプレイとして示され、前記マイクロ凸レンズ二次元アレイ1の各レンズの略々焦点面にあり、3a、3b、3c・・・で表される点像群G3を表示している。 Flat display 2 in this figure is shown as a liquid crystal display, the located substantially in the focal plane of each lens of the micro lens two-dimensional array 1, a display 3a, 3b, the point image group G3 represented by 3c · · · are doing.

バックライト4で照明された液晶ディスプレイ2に表示された点像3a、3b、3c・・・の画素部分のみ光が透過し、他の部分はバックライトの光を遮断している。 Light is transmitted only pixel portion of the backlight 4 point image displayed on the liquid crystal display 2 which is illuminated by 3a, 3b, 3c ···, other parts are cut off the light of the backlight.

平面ディスプレイ2のどの画素を透過にし、どの画素を遮光にするかは任意に選べ、平面ディスプレイを透過してマイクロ凸レンズアレイ1の各レンズを介して射出する平行光が空間の一点に集まるように選ぶ。 The pixels of the flat panel display 2 throat to the transmission, which pixel whether the shading can optionally choose, as parallel light emitted through the lenses of the micro convex lens array 1 is transmitted through the flat display gather to one point of the space Choose.

各点像(3a、3b、3c・・・)は各凸レンズの焦点面にあり、各点像から出た光はマイクロ凸レンズアレイ1の対応する各凸レンズを介して、各々ほぼ平行光として射出する。 Each point image (3a, 3b, 3c ···) is in the focal plane of each convex lens, light emitted from each point image through the convex lenses corresponding micro convex lens array 1 is emitted as each substantially parallel light .

各凸レンズから出た多数の平行光は、空間の一点に集光して像を形成し、集光後は発散する。 Multiple parallel light emitted from each convex lens, the image formed by converging to one point of the space, Atsumarihikarigo diverges.

この発散する光のコーンの範囲では、集光点に実際の像がある場合とほぼ同等の光線が存在かのように見える。 In the range of the light cone of the diverging, substantially equal ray and if there is a real image at the focal point appears as if present.

この発散する光のコーンの中に観察者が目を置くと、集光点に像を認識することになる。 If the observer in the light cone of the diverging put eyes will recognize an image at the focal point. 範囲内であれば、観察者が目を移動しても、両眼視しても、常にもとの集光点の位置に像が存在するように感じることになり、三次元画像5として表示されることになる。 Within the range, even if the observer moves his eyes, even when both eyes, always feel like the image is present at the position of the original focal point, displayed as a three-dimensional image 5 It is is will be.

図2は、前記マイクロ凸レンズ二次元アレイ1の一例を示す図である。 Figure 2 is a diagram showing an example of the micro convex lens two-dimensional array 1.

従来のIPでは、レンズアレイが不可欠な要素であったが、球面収差等の収差が三次元像の解像度を劣化させている。 In conventional IP, the lens array is an integral element, aberrations such as spherical aberration has not degrade the resolution of the three-dimensional image. 特に視域を拡げようとすると大きく傾いた斜め入射の光線を扱うことになり、収差が非常に大きくなり、三次元像の解像度を大きく劣化させる。 In particular will be dealing with light of oblique incidence inclined greatly when you Hirogeyou the viewing zone, aberration becomes very large, significantly degrade the resolution of the three-dimensional image.

また、レンズアレイ背面の平面ディスプレイは、高解像度の三次元像を得るには、個々のレンズに対応する領域に高精細の画像を表示する必要があり、その集合である微少画像群を1枚の平面ディスプレイで扱う為には、超多画素・超高画素密度の平面ディスプレイが必要になるが、超多画素・超高画素密度の平面ディスプレイは、現状技術的にも難しく、非常に高価格なものになるという問題があった。 The planar display of the lens array back is to obtain a three-dimensional image of high resolution, it is necessary to display a high definition image of the area corresponding to the individual lenses, one a minute image group is the set in order to deal with the plane display, flat display of super multi-pixel, ultra-high pixel density, but is required, the flat display of super multi-pixel, ultra-high pixel density, currently technically difficult also, very high price there is a problem that becomes a thing.

その問題を解決するために、出願人は以前の特許出願において、「光ビームを二次元走査し空中に投影する基本ユニットを複数個二次元的に配列するとともに、該各基本ユニットに所定の画像信号を入力し、二次元走査の動きに対応して該ビーム光源を輝度変調することを特徴とする三次元画像表示装置」を提案した。 To solve the problem, in the applicant earlier patent application, along with arranging the basic unit for projecting into the air scan the "light beam two-dimensionally plurality two-dimensionally, given the respective basic unit image It receives the signal, and proposed a three-dimensional image display device ", characterized by intensity modulating the beam source in response to the movement of the two-dimensional scanning.

その提案は、図3に示す基本ユニットを図4に示すようにアレイ状に並べた三次元画像表示装置である。 The proposal is a three-dimensional image display device arranged in an array as shown in FIG. 4 the base unit shown in FIG. 図3において、8が基本ユニットで、該基本ユニット8はレーザーダイオード9、ビーム整形機10、固定ミラー11、二軸走査ミラー12からなり、レーザーダイオード9から射出した光線は、ビーム整形器10を通すことによって、ほぼ距離に比例して広がる傾向の鋭い光ビームとし、固定ミラー11を介して二軸走査ミラー12に入射している。 3, 8 is the basic unit, the basic unit 8 is a laser diode 9, a beam shaper 10, the fixed mirror 11, made of biaxial scan mirror 12, light emitted from the laser diode 9, a beam shaper 10 by passing, is approximately a distance to a sharp light beam tends to spread in proportion enters the biaxial scanning mirror 12 via a fixed mirror 11. 3′は基本ユニットに入力される画像信号である。 3 'denotes an image signal input to the base unit.

二軸走査ミラー12の走査は、例えばブラウン管式テレビと同様に、二次元的な走査を、人間の目の残像でちらつきなく連続した画像と感じられる約毎秒60回以上の早さで繰り返すとともに、所定の濃淡画像が空中に投影されるように、画像信号を基に、二軸走査ミラー12の動きに合わせてレーザーダイオードの輝度を変調している。 Scanning biaxial scanning mirror 12, for example, like the CRT televisions, the two-dimensional scanning, with repeated about 60 times per second or more fast felt a continuous image without flicker afterimage of the human eye, as the predetermined grayscale image is projected into the air, on the basis of the image signal, and modulating the intensity of the laser diode in accordance with the movement of the two-axis scanning mirror 12.

この方式によって従来のレンズアレイを用いたインテグラルフォトグラフィでは不可避なレンズの収差をなくすことが可能となった。 It has become possible to eliminate the aberration of the inevitable lens is integral photography using a conventional lens array by this method.

しかしながら、前記出願の提案では、二次元走査を可動鏡(図3の二軸走査ミラー12)で行っていたので光路が複雑になることが問題であった。 However, in the proposal of the applicant, that the optical path becomes complicated it has been a problem because it was subjected to two-dimensional scanning by a movable mirror (biaxial scanning mirror 12 in FIG. 3).

本発明では、透過型の光偏向方式を用い、レンズアレイの収差の影響を受けず、高画素密度の平面ディスプレイを不要にする三次元画像表示方法を、簡単な光路で提供することにある。 In the present invention, using a transmission type optical deflection system, not affected by the aberration of the lens array, a three-dimensional image display method that eliminates the need for flat display of a high pixel density is to provide a simple optical path.

上記課題を解決するために、本発明では以下の手段を提供する。 In order to solve the above problems, the present invention provides the following means.

ビーム光源から射出する光ビームを透過型二次元走査により空中に投影する基本ユニットを複数個二次元的に配列するとともに、各基本ユニットに所定の画像信号を入力し、二次元走査の動きに対応して該ビーム光源輝度変調することを特徴とする三次元画像表示方法を提供する。 The basic unit for projecting a light beam emitted from the beam source into the air by a transmission type two-dimensional scanning with sequences plurality two-dimensionally, and inputs a predetermined image signal to each base unit, corresponding to the movement of the two-dimensional scanning providing a three-dimensional image display method, characterized by the beam source luminance modulated.

本発明では、図5から明らかなように、従来は不可欠だと考えられていた可動鏡を無くすことができ、光路を折り返す必要が無くなり、IVディスプレイの構成がシンプルにできるようになった。 In the present invention, as apparent from FIG. 5, conventionally it can be eliminated essential movable mirror, which has previously been thought, it is not necessary to fold the optical path, now constituting the IV display can be simplified.

IP表示原理説明図(空中に一個の点光源像の場合) IP display principle diagram (case of light source images one point in the air) マイクロ凸レンズ二次元アレイ斜視図 Micro convex lens two-dimensional array perspective view 従来例の基本ユニットの一例 An example of a basic unit of the conventional example 従来例の斜視図 Perspective view of a conventional example 本発明の一実施例説明図 One example illustration of the present invention

以下、本発明の実施の形態を詳細に説明する。 Hereinafter, an embodiment of the present invention in detail.

図5の左側から白抜きの矢印で示すように、レーザーダイオード9からの光線がビーム整形機10を介しほぼ距離に比例して広がる傾向の鋭い光ビームとして入射する。 As shown by the white arrow from the left side of FIG. 5, light from the laser diode 9 is incident as the tendency of sharp light beam spread substantially proportional to the distance through the beam shaper 10.

3枚の固定板ガラスGの2層の隙間に電圧で屈折率が変化する液晶LQを封印し、該板ガラスGの液晶に接する側にすだれ状透明電極CTを配し直交する2方向の勾配電界(水平走査用電圧Vh1,Vh2,Vh3...垂直走査電圧Vv1,Vv2,Vv3...)を変化させると、勾配電界の大きさに対応してレーザーダイオードからの光ビームは偏向角が変化し、同図右方向に射出する。 Three refractive index at a voltage in the gap of the two-layer fixing plate glass G is sealed a liquid crystal LQ varying, two directions perpendicular to the gradient field arranged interdigital transparent electrode CT on the side in contact with the liquid crystal of the plate glass G ( changing the horizontal scanning voltage Vh1, Vh2, Vh3 ... vertical scanning voltage Vv1, Vv2, Vv3 ...), the light beam deflection angle is changed from the laser diode in response to the magnitude of the gradient field , it is injected into the drawing right.

二軸走査は、例えば図5に示すようにブラウン管式テレビと同様の走査で二次元的な走査を、人間の目の残像でちらつきなく連続した画像と感じられる約毎秒60回以上の早さで繰り返すとともに、所定の濃淡画像が空中に投影されるように、画像信号13を基に、第5図示の透過型2軸偏向部の偏向きに合わせてレーザーダイオードの輝度を変調している。 Biaxial scan, for example a two-dimensional scanning in the same scanning and CRT TV as shown in FIG. 5, at about 60 times per second or more fast felt a continuous image without flicker afterimage of the human eye with repeated, so that a predetermined grayscale image is projected into the air, on the basis of the image signal 13 to modulate the intensity of the laser diode in accordance with the polarization direction of the transmission type two-axis deflection of the fifth shown.

1 マイクロ凸レンズ二次元アレイ2 平面ディスプレイ3a、3b、3c 各点像4 バックライト5 点光源像6 視域8 基本ユニット9 レーザーダイオード10 ビーム整形器13 画像信号G 板ガラスCT 透明電極LQ 電圧で屈折率が変化する液晶Vv1 垂直走査用勾配電圧の一つVv2 第二の垂直走査用勾配電圧Vv3 第三の垂直走査用勾配電圧Vh1 水平走査用勾配電圧の一つVh2 第二の水平走査用勾配電圧Vh3 第三の水平走査用勾配電圧 Refractive index 1 micro convex lens two-dimensional array 2 flat display 3a, 3b, 3c each point image 4 backlight 5 points light source image 6 viewing zone 8 base unit 9 laser diode 10 beam shaper 13 image signal G flat glass CT transparent electrode LQ voltage LCD Vv1 one Vv2 second one Vh2 second horizontal scanning slope voltage of the vertical scanning slope voltage Vv3 third vertical scanning slope voltage Vh1 horizontal scanning slope voltage of the vertical scanning slope voltage Vh3 but varying third horizontal scanning slope voltage

Claims (1)

  1. 単色又は複数色のビーム光源から射出する光ビームを二次元走査し空中に投影する基本ユニットを複数個二次元的に配列するとともに、 As well as sequences plurality two-dimensionally the basic unit of the light beam emitted from a monochromatic or color beam light source is scanned two-dimensionally projected into the air,
    該各基本ユニットに所定の画像信号を入力し、二次元走査の動きに対応して該ビーム光源を輝度変調することを特徴とする三次元画像表示装置に於いて、 Type a predetermined image signal to respective base unit, at the beam source in response to the movement of the two-dimensional scanning on the three-dimensional image display device, characterized in that the intensity modulation,
    2枚のガラス板の間に、液晶のような電圧で屈折率が変化する物質を挟み、 Between two glass plates sandwiching a material whose refractive index varies with voltage, such as liquid crystal,
    すだれ状透明電極により電場の勾配を変化させることにより、 By varying the gradient of the electric field by interdigital transparent electrode,
    光ビームの一次元走査をするものを直交させて二組積層し、 It is perpendicular to those of the one-dimensional scanning of the light beam by stacking two sets,
    光ビームの二次元走査をすることを特徴とした三次元画像表示方法。 Three-dimensional image display method characterized in that the two-dimensional scanning of the light beam.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017099007A1 (en) * 2015-12-08 2017-06-15 株式会社エンプラス Marker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003233094A (en) * 2002-02-13 2003-08-22 Citizen Watch Co Ltd Light deflecting element and its driving method
JP2003295153A (en) * 2002-01-31 2003-10-15 Citizen Watch Co Ltd Optical deflection apparatus and optical deflection method
JP2006313238A (en) * 2005-05-09 2006-11-16 Konica Minolta Holdings Inc Light deflector
JP2007011104A (en) * 2005-07-01 2007-01-18 National Institute Of Information & Communication Technology Light beam controller and stereoscopic image display apparatus using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003295153A (en) * 2002-01-31 2003-10-15 Citizen Watch Co Ltd Optical deflection apparatus and optical deflection method
JP2003233094A (en) * 2002-02-13 2003-08-22 Citizen Watch Co Ltd Light deflecting element and its driving method
JP2006313238A (en) * 2005-05-09 2006-11-16 Konica Minolta Holdings Inc Light deflector
JP2007011104A (en) * 2005-07-01 2007-01-18 National Institute Of Information & Communication Technology Light beam controller and stereoscopic image display apparatus using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017099007A1 (en) * 2015-12-08 2017-06-15 株式会社エンプラス Marker

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