JPS59191002A - Variable refractive index distribution type lens - Google Patents

Variable refractive index distribution type lens

Info

Publication number
JPS59191002A
JPS59191002A JP6505083A JP6505083A JPS59191002A JP S59191002 A JPS59191002 A JP S59191002A JP 6505083 A JP6505083 A JP 6505083A JP 6505083 A JP6505083 A JP 6505083A JP S59191002 A JPS59191002 A JP S59191002A
Authority
JP
Japan
Prior art keywords
heating element
lens
refractive index
substrates
propagation path
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
JP6505083A
Other languages
Japanese (ja)
Inventor
Kazuo Mikami
和夫 三上
Naohisa Inoue
直久 井上
Maki Yamashita
山下　牧
Mitsutaka Kato
加藤　充孝
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP6505083A priority Critical patent/JPS59191002A/en
Publication of JPS59191002A publication Critical patent/JPS59191002A/en
Pending legal-status Critical Current

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
    • G02F1/29—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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient
    • 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 
    • G02F1/0147—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 thermo-optic effects

Abstract

PURPOSE:To manufacture easily a titled lens, and also to execute freely a focus control from the outside by generating a concentric circle-like temperature distribution centering around a linear heating element on an optical propagation path. CONSTITUTION:On a joint surface of substrates consisting of TiO2 being a photoconductive member having a temperature optical effect, a linear heating element 3 is provided linearly extending over the longitudinal direction of the substrates 1, 2. When a driving current is supplied to the heating element 3 and it is heated, a temperature distribution 4 by which an isothermal line becomes like a concentric circle centering around the heating element 3 is generated on the substrates 1, 2, and accordingly, a refractive index distribution corresponding to it is generated. That is to say, since the heating element is provided linearly, a rod lens is formed. A focus control of this lens is executed by magnitude of a current supplied to the heating element 3, therefore, the focus control becomes uniform. Also, this lens is capable of correspond to a beam diameter of incident beams 6, 7 by magnitude of a current to the heating element 3.

Description

【発明の詳細な説明】 （発明の分野） この発明は、温度光学効果を利用して外部から屈折率分
布をコントロールすることかぐきる可変屈折重分イＦ形
レンズに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a variable refractive index F-type lens whose refractive index distribution can be externally controlled by utilizing thermo-optical effects.

（発明の背景） 周知のように、光フアイバ通信、複写機やビデオディス
ク等の光電子機器ではロンド形レンズが利用され、装置
の小形・軽量化等に役立っている。(Background of the Invention) As is well known, Ronde lenses are used in optoelectronic devices such as optical fiber communications, copying machines, and video disks, and are useful for making devices smaller and lighter.

このロンド形レンズは内部の屈折率の変化により光を屈
折させレンズ作用を持たせるいわゆる屈折率分布形レン
ズと呼ばれるもので、単レンズで１月１の正立実像の結
像が可能である。This Ronde type lens is a so-called gradient index lens that refracts light by changing the internal refractive index and has a lens effect, and is capable of forming an erect real image of January 1 with a single lens.

ところで、このような屈折率分布形レンズは、イオン交
換拡散や拡散重合等の技術にＪ：り製造されるもので、
ディスクリートな光学部品と同様に製造が面倒である。By the way, such gradient index lenses are manufactured using techniques such as ion exchange diffusion and diffusion polymerization.
Like discrete optical components, they are cumbersome to manufacture.

まｌζ、このようにしで作成された屈折率分布形レンズ
は固定焦点形のものであり、ディスクリ−１−な光学部
品と同様に焦点位置制御機構等が必要で、装置の小形・
軽小化の目的には必ずしもそぐわない面があった。However, the gradient index lens created in this way is of a fixed focus type, and like discrete optical components, it requires a focal position control mechanism, etc., and the device is compact and compact.
There were aspects that did not necessarily suit the purpose of downsizing.

（発明の目的） この発明は、製造が容易であり、かつ外部から自由に焦
点制御ができる可変屈折率分布形レンズを提供すること
にある。(Objective of the Invention) An object of the present invention is to provide a variable refractive index gradient lens that is easy to manufacture and whose focus can be freely controlled from the outside.

（発明の構成と効果） この発明は、上記［１的を達成Ｊ−るために、温度光学
効果を有する導光性部材力目らな６光伝搬路に、該光伝
搬路を加熱ブる線状発熱体をｊ手段し、該光伝搬路に等
湿粉が上記線状発熱体を中心とする同心円状をなず温度
分布−を生じさせるようにしたことを特徴どする。(Structure and Effects of the Invention) In order to achieve the above-mentioned object [1], the present invention provides six light propagation paths with a light guide member having a thermo-optical effect, and a heating beam for the light propagation path. The present invention is characterized in that a linear heating element is used as the means, and the homogeneous powder is arranged in a concentric circle with the linear heating element at the center in the light propagation path to produce a temperature distribution.

この構成によれば、温度光学効果により光伝搬路内に所
定の屈折率分子ｉを生じさせるようにしたので、製造が
容易である。また線状発熱体の駆動電流を調節覆るだけ
で簡単に焦点制御を行なうことができる。According to this configuration, since a predetermined refractive index molecule i is generated in the light propagation path by the thermo-optic effect, manufacturing is easy. Further, focus control can be easily performed by simply adjusting the drive current of the linear heating element.

（実施例の説明） 添イ］図はこの発明に係る町変屈折率分イｌｉ形レンズ
の一実施例を示づ。同図において、温度光学効果を有す
る導光性部材であるＴｉ０ｚからなる基板１．２の接合
面には線状発熱体３が基板１．２の長手方向全長に渡っ
て直線状に配設されている。(Description of Embodiments) Figure 1 shows an embodiment of a variable refractive index lens according to the present invention. In the figure, a linear heating element 3 is arranged linearly over the entire longitudinal length of the substrate 1.2 on the bonding surface of the substrate 1.2, which is made of Ti0z, which is a light guiding member having a thermo-optical effect. ing.

以上の構成において、線状発熱体３に駆動電流を供給し
これを発熱させると、基板１，２には等湿粉が線状発熱
体３を中心とする同心円状をなす温度分布４が生じ、従
ってこれに対応した屈折率分布が生ずる。つまり、この
実施例では線状発熱体を直線状に配設したので、基板１
，２には周知のロンドレンズが形成される。このレンズ
の焦点制御は線状発熱体３に供給する駆動電流の犬ささ
にＪ、って行なえば良いから、焦点制御は均一なものに
なる。そして、入射光ビーム６．７のビーム径には線状
発熱体３に供給づる駆動電流の大きさで対応することが
できる。In the above configuration, when a drive current is supplied to the linear heating element 3 to cause it to generate heat, a temperature distribution 4 is generated in the substrates 1 and 2 in which the equal humidity powder forms concentric circles with the linear heating element 3 at the center. , thus a corresponding refractive index distribution is generated. In other words, in this embodiment, since the linear heating elements are arranged in a straight line, the substrate 1
, 2 are formed with well-known Rondo lenses. The focus of this lens can be controlled by controlling the drive current supplied to the linear heating element 3 by J, so that the focus can be controlled uniformly. The beam diameter of the incident light beam 6.7 can be matched by the magnitude of the drive current supplied to the linear heating element 3.

なあ、上記実施例では線状発熱体を直線状に配設したが
、この発明はこれに限定されるもの（・・はなく、例え
ば湾曲して配設しても良い。また、線状発熱体は２つの
基板の接合面に配設したが、基板の光伝搬路に埋設する
にうにしても良いことは勿論で′ある。Incidentally, in the above embodiment, the linear heating element is arranged in a straight line, but the present invention is not limited to this. For example, the linear heating element may be arranged in a curved manner. Although the body is disposed on the joining surface of the two substrates, it is of course possible to embed it in the optical propagation path of the substrates.

【図面の簡単な説明】[Brief explanation of the drawing]

添句図はこの発明の一実施例を示づ一概略斜視図である
。 １．２・・・基板（光伝搬路〉 ３・・・・・・・・・線状発熱体 ４・・・・・・・・・温度分布 ６．７・・・入Ω・ｊ光ビームThe attached figure is a schematic perspective view showing an embodiment of the present invention. 1.2... Substrate (light propagation path) 3... Linear heating element 4... Temperature distribution 6.7... Input Ω・j light beam

Claims (1)

【特許請求の範囲】[Claims] 〈１）湿度光学効果を有する導光性部材からなる光伝搬
路に、該光伝搬路を加熱する線状発熱体を埋設し、該光
伝搬路に等４線が上記線状発熱体を中心とする同心円状
をなツ温度分布を生じさせるようにしたことを特徴ど１
−る可変屈折率分布形レンズ。<1) A linear heating element that heats the optical propagation path is embedded in a light propagation path made of a light guiding member having a humidity optical effect, and four equal lines are arranged in the optical propagation path with the linear heating element centered on the optical propagation path. It is characterized by having a concentric circle shape that produces a temperature distribution.
- Variable refractive index gradient lens.
JP6505083A 1983-04-13 1983-04-13 Variable refractive index distribution type lens Pending JPS59191002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6505083A JPS59191002A (en) 1983-04-13 1983-04-13 Variable refractive index distribution type lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6505083A JPS59191002A (en) 1983-04-13 1983-04-13 Variable refractive index distribution type lens

Publications (1)

Publication Number Publication Date
JPS59191002A true JPS59191002A (en) 1984-10-30

Family

ID=13275741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6505083A Pending JPS59191002A (en) 1983-04-13 1983-04-13 Variable refractive index distribution type lens

Country Status (1)

Country Link
JP (1) JPS59191002A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193429A (en) * 1983-04-18 1984-11-02 Canon Inc Method and device for making focal position variable
US5486951A (en) * 1993-12-16 1996-01-23 Eastman Kodak Company Gradial zone lens and method of fabrication
WO2003038499A1 (en) * 2001-11-01 2003-05-08 Mitsubishi Rayon Co.,Ltd. Optical multiplexer/demultiplexer, optical multiplexing/demultiplexing method, and optical filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193429A (en) * 1983-04-18 1984-11-02 Canon Inc Method and device for making focal position variable
US5486951A (en) * 1993-12-16 1996-01-23 Eastman Kodak Company Gradial zone lens and method of fabrication
US5629800A (en) * 1993-12-16 1997-05-13 Eastman Kodak Company Gradial zone lens and method of fabrication
WO2003038499A1 (en) * 2001-11-01 2003-05-08 Mitsubishi Rayon Co.,Ltd. Optical multiplexer/demultiplexer, optical multiplexing/demultiplexing method, and optical filter

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