JP2628630B2 - LCD mirror lens - Google Patents
LCD mirror lensInfo
- Publication number
- JP2628630B2 JP2628630B2 JP61013067A JP1306786A JP2628630B2 JP 2628630 B2 JP2628630 B2 JP 2628630B2 JP 61013067 A JP61013067 A JP 61013067A JP 1306786 A JP1306786 A JP 1306786A JP 2628630 B2 JP2628630 B2 JP 2628630B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- mirror
- mirror lens
- crystal cell
- lens
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、液晶を利用したミラーレンズ、詳しくは
液晶の屈折率分布の変化を利用して視野角を変えること
ができる液晶ミラーレンズに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror lens using a liquid crystal, and more particularly, to a liquid crystal mirror lens that can change a viewing angle by using a change in a refractive index distribution of the liquid crystal.
［従来の技術］ 一般に、反射境は高い面精度を保ち、反射による像の
歪み等を生じさせないようにするために、ガラス等の硬
質の基板上に反射面を形成しているが、用途によっては
反射鏡の反射により見える範囲（視野角）や焦点距離等
を変えたい場合もある。その場合、反射鏡そのものを交
換するのはあまりにも不便であるし、また不可能な場合
が多い。そこで、従来反射鏡自体の視野角を変えるのに
は、保持部材に圧電素子を介して反射鏡を取り付けてお
き、この圧電素子に通電した際の保持部材の変形により
反射鏡の形状（主に曲率）そのものを変化させる方法等
が取られていた。[Related Art] Generally, a reflection surface is formed on a hard substrate such as glass in order to maintain a high surface accuracy and prevent image distortion or the like due to reflection. In some cases, the user may want to change the range (viewing angle), focal length, and the like that can be seen by the reflection of the reflecting mirror. In that case, replacing the reflector itself is too inconvenient and often impossible. Therefore, in order to change the viewing angle of the conventional reflecting mirror itself, the reflecting mirror is attached to the holding member via a piezoelectric element, and the shape of the reflecting mirror (mainly, the deformation of the holding member when the piezoelectric element is energized) is changed. (Curvature) itself was changed.
［発明が解決しようとする問題点］ しかしながら、このような機械的方法では基板を無理
やり変形させることになるために反射面に歪みが生じや
すく、反射鏡の性能を維持することが困難である。ま
た、機械的変化とその解除を繰り返していると基板その
ものが変形してしまい、力を加えない状態においても歪
みが出てしまう等の不都合を生じる虞もある。[Problems to be Solved by the Invention] However, in such a mechanical method, since the substrate is forcibly deformed, the reflection surface is likely to be distorted, and it is difficult to maintain the performance of the reflector. Further, if the mechanical change and its release are repeated, the substrate itself may be deformed, which may cause inconvenience such as distortion even when no force is applied.
この発明は、上記の点に鑑み、反射鏡の基板や反射面
には何らの変形を加えることなく視野角を変えることが
できる反射鏡を提供するものである。The present invention has been made in view of the above circumstances, and provides a reflecting mirror capable of changing a viewing angle without applying any deformation to a substrate or a reflecting surface of the reflecting mirror.
［問題点を解決するための手段および作用］ 本発明の液晶ミラーレンズは、ミラーと、このミラー
の反射面側に配設され配向処理された液晶を封入してな
る液晶セルと、セル内の液晶分子のディレクターを変化
させる手段とを有する事を特徴とする。[Means and Actions for Solving the Problems] A liquid crystal mirror lens according to the present invention includes a mirror, a liquid crystal cell which is disposed on the reflection surface side of the mirror and encloses liquid crystal which has been subjected to alignment treatment, and a liquid crystal cell inside the cell. Means for changing the director of the liquid crystal molecules.
このような構成によれば、液晶セル内の液晶分子のデ
ィレクター変化によって液晶セル内の屈折率が変化し、
ミラーの視野角が可変となる。According to such a configuration, the refractive index in the liquid crystal cell changes due to the director change of the liquid crystal molecules in the liquid crystal cell,
The viewing angle of the mirror becomes variable.
［実 施 例］ 以下、図面に基づいてこの発明の液晶ミラーレンズを
説明する。[Embodiment] Hereinafter, a liquid crystal mirror lens of the present invention will be described with reference to the drawings.
第１図，第２図は、本発明の液晶ミラーレンズの一実
施例の断面図および平断面図であり、ガラスまたは合成
樹脂の基板２の凹球面にアルミニウム等の導電性を有す
る反射面３が蒸着等で形成されている凹面鏡である。こ
の凹面鏡の曲率半径と等しい曲率半径を有する透明なガ
ラスまたは合成樹脂の等厚の曲面外板４には内側の凸面
がわに透明導電層の電極５が配設され、絶縁体のスペー
サ６を介して作られた等厚の空間（セル）11にネマティ
ック液晶７がその分子がある特定方向に向くように配向
処理して封入されている。そして、曲面外板４の外側に
は偏光フィルム12が配設されて液晶ミラーレンズ１は構
成されている。1 and 2 are a sectional view and a plan sectional view of an embodiment of a liquid crystal mirror lens of the present invention. A concave surface of a glass or synthetic resin substrate 2 has a reflecting surface 3 having conductivity such as aluminum. Is a concave mirror formed by vapor deposition or the like. An electrode 5 of a transparent conductive layer is disposed on a curved outer plate 4 of transparent glass or synthetic resin having a radius of curvature equal to the radius of curvature of the concave mirror, and an inner spacer is provided. The nematic liquid crystal 7 is sealed in a space (cell) 11 having an equal thickness formed therebetween through an orientation treatment so that its molecule is directed to a specific direction. The polarizing film 12 is provided outside the curved outer plate 4 to constitute the liquid crystal mirror lens 1.
今、この液晶ミラーレンズ１に液晶セルがわから光が
実線ｌで示すように入射したとすると、通常の凹面積と
同じく反射面３で反射した反射光線は実線ｌ′となって
射出される。ところで、液晶セル11の反射面３と透明導
電層の電極５との間に、外部駆動電源８からの交流電圧
を可変インピーダンス素子９を介して印加すると、液晶
セル11内の液晶７の液晶分子は電界方向にその分子の長
軸方向を揃えるように回転し、液晶７の屈折率が変化す
ることになる。Assuming now that the liquid crystal cell is incident on the liquid crystal mirror lens 1 as shown by a solid line l, the reflected light beam reflected by the reflecting surface 3 is emitted as a solid line l 'as in a normal concave area. When an AC voltage from an external drive power supply 8 is applied between the reflective surface 3 of the liquid crystal cell 11 and the electrode 5 of the transparent conductive layer via the variable impedance element 9, the liquid crystal molecules of the liquid crystal 7 in the liquid crystal cell 11 are changed. Rotates so that the major axis direction of the molecule is aligned with the direction of the electric field, and the refractive index of the liquid crystal 7 changes.
このことをさらに詳細に説明すると、液晶セル11内の
内部では液晶７は交流電圧を印加していないときにおい
ても、ある特定方向に液晶分子が揃うように配向処理が
施されており、液晶分子はホモジニアス配向となってい
る。This will be described in more detail. In the liquid crystal cell 11, the liquid crystal 7 is subjected to an alignment treatment so that the liquid crystal molecules are aligned in a specific direction even when no AC voltage is applied. Has a homogeneous orientation.
この液晶セル11に電圧を印加すると、液晶セル11中の
液晶７の分子は電界方向に分子の長軸方向を揃えるよう
に回転する（液晶の誘電異方性が正の液晶の場合）。こ
こで、第２図中、矢印ｎで示す液晶分子のディレクター
を有する液晶セル11に第３図のように光軸Ｏ方向に展開
して示すように、液晶のディレクターに平行する振動方
向を有する光を通過させる偏光フィルタ12を組み合わ
せ、液晶セル11に対して異常光のみを入射させることが
できるように構成すると、液晶セル11内の液晶分子が電
界が強くなって回転角が大きくなるにつれ、液晶７の屈
折率が異常光線の屈折率neから常光線の屈折率noの間で
変化していく。このため、第１図に示す液晶ミラーレン
ズ１に実線で示すように入射する光線ｌは点線で示すよ
うな反射光線ｌ″となり、視野角を変えることができ
る。When a voltage is applied to the liquid crystal cell 11, the molecules of the liquid crystal 7 in the liquid crystal cell 11 rotate so that the major axis direction of the molecules is aligned with the direction of the electric field (when the liquid crystal has a positive dielectric anisotropy). Here, in FIG. 2, a liquid crystal cell 11 having a director of liquid crystal molecules indicated by an arrow n has a vibration direction parallel to the director of the liquid crystal as shown in FIG. When the polarization filter 12 that transmits light is combined to allow only the extraordinary light to enter the liquid crystal cell 11, as the electric field of the liquid crystal molecules in the liquid crystal cell 11 becomes stronger and the rotation angle becomes larger, the refractive index of the liquid crystal 7 is gradually varied between the refractive index n e of the extraordinary ray refractive index n o of the ordinary ray. For this reason, the light beam l incident on the liquid crystal mirror lens 1 shown in FIG. 1 as shown by a solid line becomes a reflected light beam l ″ as shown by a dotted line, and the viewing angle can be changed.
上記第１図の実施例では、液晶セル11を等厚に形成し
たものについて説明したが、第４図に示すように液晶セ
ル11aをレンズ形状にすることもできる。すなわち、反
射面3aを有する平面鏡2aと、等厚の透明なガラスまたは
合成樹脂の球面外板4aの凹球面がわに透明導電層の電極
5aと凸球面がわに偏光フィルム12aを配設し、この球面
外板4aと平面鏡2aとの間を絶縁体のスペーサ6aを介して
形成される凸レンズ状のセル11aに、液晶7aをある特定
方向に液晶分子が揃うように配向処理して封入し液晶ミ
ラーレンズ1aを形成したものである。In the embodiment of FIG. 1, the liquid crystal cell 11 is formed to have the same thickness, but the liquid crystal cell 11a may be formed in a lens shape as shown in FIG. That is, a flat mirror 2a having a reflecting surface 3a and an electrode of a transparent conductive layer alligated by a concave spherical surface of a transparent glass or synthetic resin spherical outer plate 4a having an equal thickness.
A polarizing film 12a is disposed between the spherical outer plate 4a and the plane mirror 2a and a convex lens-shaped cell 11a formed between the spherical outer plate 4a and the plane mirror 2a through an insulating spacer 6a. The liquid crystal mirror lens 1a is formed by sealing the liquid crystal molecules so that the liquid crystal molecules are aligned in the direction.
この場合は、外部駆動電源8aからの交流電圧を可変イ
ンピーダンス素子9aを介して反射面3aと電極5aに印加す
ることにより、液晶レンズの屈折力が変化して視野角を
変化させることができる。In this case, by applying an AC voltage from the external drive power supply 8a to the reflecting surface 3a and the electrode 5a via the variable impedance element 9a, the refractive power of the liquid crystal lens changes, and the viewing angle can be changed.
次に、第５図（Ａ），（Ｂ）に基づいてこの発明の液
晶ミラーレンズの他の例を説明する。この例では、反射
面3bが配設された平面反射鏡2bと透明なガラスまたは合
成樹脂の平行平面の外板4bとを絶縁体のスペーサ6bを挟
んで対設させて等厚のセル11bを構成する。この外板4b
のセル側には第５図（Ａ）に示すように同心円状の透明
導電膜の電極10a,10b,10cおよび10dが、外側には偏光フ
ィルム12bが配設されている。上記セル11bには液晶7bを
ある特定方向に液晶分子が揃うように配向処理して封入
されている。そして、上記同心円状の電極10a,10b,10c
および10dには、中心の電極10aになるほど外部駆動電源
8bから印加される交流電圧が高くなるように抵抗R1,R2
およびR3で分圧して印加できるように接続されている。Next, another example of the liquid crystal mirror lens of the present invention will be described based on FIGS. 5 (A) and 5 (B). In this example, a flat reflecting mirror 2b provided with a reflecting surface 3b and a parallel flat outer plate 4b made of transparent glass or synthetic resin are opposed to each other with an insulating spacer 6b interposed therebetween to form an equal thickness cell 11b. Configure. This outer plate 4b
As shown in FIG. 5 (A), concentric transparent conductive electrodes 10a, 10b, 10c and 10d are provided on the cell side, and a polarizing film 12b is provided on the outside. In the cell 11b, a liquid crystal 7b is subjected to an alignment treatment so that liquid crystal molecules are aligned in a specific direction, and sealed. Then, the concentric electrodes 10a, 10b, 10c
And 10d have an external drive power supply that is closer to the center electrode 10a.
The resistances R 1 and R 2 are set so that the AC voltage applied from 8b increases.
And in R 3 divides are connected so as to apply.
したがって、この液晶ミラーレンズ1bに、外部駆動電
源8bからの交流電圧を可変インピーダンス素子9bを介し
て印加すると、液晶セル11b内の液晶7bには中心部ほど
高電圧が印加されるので、液晶セル11bの中心部が最も
屈折率が高くなり、外周へ行くにつれて各電極10b,10c,
10dに対応する領域の順に印加電圧が低くなるのに応じ
て徐々に屈折率が低くなっていく。このため、あたかも
反射面3bの前にセルフォック等の屈折率分布型のレンズ
を配設したものと同様の効果が生じ、映像の視野角を変
えることが可能となる。Therefore, when an AC voltage from the external drive power supply 8b is applied to the liquid crystal mirror lens 1b via the variable impedance element 9b, a higher voltage is applied to the liquid crystal 7b in the liquid crystal cell 11b toward the center, so that the liquid crystal cell The center of 11b has the highest refractive index, and each electrode 10b, 10c,
The refractive index gradually decreases as the applied voltage decreases in the order of the region corresponding to 10d. For this reason, the same effect as that obtained by disposing a refractive index distribution type lens such as Selfoc in front of the reflection surface 3b is produced, and the viewing angle of an image can be changed.
以上、液晶の屈折率は電圧を変化させることによって
変えたが、電圧以外の手段を用いてもよい。例えば、周
波数、磁界を変化させて液晶の屈折率を変えてもよい。As described above, the refractive index of the liquid crystal is changed by changing the voltage, but means other than the voltage may be used. For example, the refractive index of the liquid crystal may be changed by changing the frequency and the magnetic field.
このような液晶ミラーレンズは、例えば自動車のフェ
ンダーミラーに応用すれば、運転席から容易に視角を変
えることができるフェンダーミラーとすることができ、
大型車等では交差点で死角を無くして巻込事故等の防止
に大いに貢献できる。また、複写機等の照明装置の反射
鏡に利用すれば、複写用ズームレンズに合せた照明装置
も容易に作ることができる。その外、家庭用の化粧鏡と
しても可変倍率の調節自在な鏡を作ることができる。If such a liquid crystal mirror lens is applied to, for example, a fender mirror of an automobile, it can be a fender mirror that can easily change a viewing angle from a driver's seat,
Eliminating blind spots at intersections in large vehicles can greatly contribute to the prevention of entrainment. Further, if the present invention is applied to a reflecting mirror of an illumination device such as a copying machine, an illumination device adapted to a zoom lens for copying can be easily manufactured. In addition, an adjustable mirror with variable magnification can be made as a home makeup mirror.
［発明の効果］ 上記実施例で説明したように、この発明の液晶ミラー
レンズは視野角を変えることが印加電圧を加えるだけの
きわめて簡単な操作で容易にできる反射境を得ることが
できる。[Effects of the Invention] As described in the above embodiment, the liquid crystal mirror lens of the present invention can obtain a reflection boundary in which the viewing angle can be easily changed by a very simple operation simply by applying an applied voltage.
第１図および第２図は、本発明の一実施例を示す液晶ミ
ラーレンズの側断面図および平断面図、 第３図は、上記第１図，第２図に示す液晶ミラーレンズ
の動作を説明するために光軸方向に展開して示した斜視
図、 第４図は、本発明の第２実施例を示す液晶ミラーレンズ
の断面図、 第５図（Ａ），（Ｂ）は、本発明の他の実施例を示す液
晶ミラーレンズの正面図および断面図である。 1,1a,1b……液晶ミラーレンズ 2,2a,2b……反射境 3,3a,3b……反射面 4,4a,4b……透明外板 5,5a,5b……透明導電層の電極 8,8a,8b……外部駆動電源 11,11a,11b……液晶セル1 and 2 are a side sectional view and a plan sectional view of a liquid crystal mirror lens according to an embodiment of the present invention. FIG. 3 is a diagram showing the operation of the liquid crystal mirror lens shown in FIGS. FIG. 4 is a perspective view developed in the direction of the optical axis for explanation, FIG. 4 is a cross-sectional view of a liquid crystal mirror lens showing a second embodiment of the present invention, and FIGS. It is the front view and sectional view of the liquid crystal mirror lens which shows another Example of invention. 1,1a, 1b ... LCD mirror lens 2,2a, 2b ... Reflective boundary 3,3a, 3b ... Reflective surface 4,4a, 4b ... Transparent outer plate 5,5a, 5b ... Transparent conductive layer electrode 8,8a, 8b …… External drive power supply 11,11a, 11b …… Liquid crystal cell
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−99654（ＪＰ，Ａ) 特開 昭52−32348（ＪＰ，Ａ) 特開 昭56−81818（ＪＰ，Ａ) 特開 昭60−225829（ＪＰ，Ａ) 特開 昭56−46267（ＪＰ，Ａ) 特開 昭51−75437（ＪＰ，Ａ) 実開 昭58−188602（ＪＰ，Ｕ) 実開 昭60−104801（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-99654 (JP, A) JP-A-52-32348 (JP, A) JP-A-56-81818 (JP, A) JP-A Sho 60- 225829 (JP, A) JP-A-56-46267 (JP, A) JP-A-51-75437 (JP, A) JP-A-58-188602 (JP, U) JP-A 60-104801 (JP, U)
Claims (5)
れ配向処理された液晶を封入してなる液晶セルと、この
液晶セル内の液晶分子のディレクターを変化させること
により前記液晶の屈折率を変化させる手段とを有し、前
記液晶セルを介して入射した光を前記ミラーで反射し、
前記液晶セルを介して射出させる液晶ミラーレンズ。1. A mirror, a liquid crystal cell disposed on the reflection surface side of the mirror and enclosing alignment-treated liquid crystal, and the director of the liquid crystal molecules in the liquid crystal cell is changed by changing the director of the liquid crystal. Means for changing the rate, the light incident through the liquid crystal cell is reflected by the mirror,
A liquid crystal mirror lens that emits light through the liquid crystal cell.
晶セル内の液晶に電界を印加する電極と、この電極に電
圧を印加する電源とを有することを特徴とする特許請求
の範囲第１項記載の液晶ミラーレンズ。2. The apparatus according to claim 1, wherein the means for changing the director includes an electrode for applying an electric field to the liquid crystal in the liquid crystal cell, and a power supply for applying a voltage to the electrode. LCD mirror lens.
るものであることを特徴とする特許請求の範囲第１項記
載の液晶ミラーレンズ。3. The liquid crystal mirror lens according to claim 1, wherein said power supply applies an alternating voltage to said electrodes.
偏光させる光学素子を具備したことを特徴とする特許請
求の範囲第１項記載の液晶ミラーレンズ。4. The liquid crystal mirror lens according to claim 1, further comprising an optical element for polarizing incident light into light having a polarization component in a specific direction.
ング状電極を含み、上記電源が上記複数のリング状電極
に順次異なる電圧を印加する手段を含む特許請求の範囲
第２項記載の液晶ミラーレンズ。5. The apparatus according to claim 2, wherein said electrode includes a plurality of ring-shaped electrodes arranged concentrically, and said power supply includes means for sequentially applying different voltages to said plurality of ring-shaped electrodes. LCD mirror lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61013067A JP2628630B2 (en) | 1986-01-24 | 1986-01-24 | LCD mirror lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61013067A JP2628630B2 (en) | 1986-01-24 | 1986-01-24 | LCD mirror lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170933A JPS62170933A (en) | 1987-07-28 |
| JP2628630B2 true JP2628630B2 (en) | 1997-07-09 |
Family
ID=11822793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61013067A Expired - Fee Related JP2628630B2 (en) | 1986-01-24 | 1986-01-24 | LCD mirror lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2628630B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2862903B2 (en) * | 1989-07-29 | 1999-03-03 | オリンパス光学工業株式会社 | Variable power mirror lens |
| EP0791503A3 (en) * | 1995-03-02 | 1997-09-10 | Gentex Corporation | Improved rearview mirror for motor vehicles |
| EP1136993B1 (en) * | 1999-09-02 | 2009-12-16 | Asahi Glass Company Ltd. | Optical head |
| AU2002305654A1 (en) | 2001-05-23 | 2002-12-03 | E-Vision, L.L.C. | Focusing mirrors having variable reflective properties |
| JP4899408B2 (en) * | 2005-02-25 | 2012-03-21 | 株式会社ニコン | Microscope equipment |
| JP2011099999A (en) * | 2009-11-06 | 2011-05-19 | Akita Prefecture | Liquid crystal optical device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014345B2 (en) * | 1974-12-25 | 1985-04-12 | 株式会社リコー | Variable magnification slit exposure method in electronic copying machine |
| FR2323160A1 (en) * | 1975-09-03 | 1977-04-01 | Thomson Brandt | OPTICAL PROJECTION DEVICE AND OPTICAL READER INCLUDING SUCH A DEVICE |
| US4190330A (en) * | 1977-12-27 | 1980-02-26 | Bell Telephone Laboratories, Incorporated | Variable focus liquid crystal lens system |
| JPS5646267A (en) * | 1979-09-21 | 1981-04-27 | Ricoh Co Ltd | Unidirectional variable magnification duplicating method |
| JPS5681818A (en) * | 1979-12-08 | 1981-07-04 | Nippon Telegr & Teleph Corp <Ntt> | Refractive index control device |
| JPS58188602U (en) * | 1982-06-07 | 1983-12-15 | トヨタ自動車株式会社 | Anti-glare mirror |
| JPS60104801U (en) * | 1983-12-22 | 1985-07-17 | トヨタ自動車株式会社 | LCD anti-glare mirror |
| JPS60225829A (en) * | 1984-04-24 | 1985-11-11 | Tokai Rika Co Ltd | Antidazzle mirror for automobile |
-
1986
- 1986-01-24 JP JP61013067A patent/JP2628630B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62170933A (en) | 1987-07-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |