JPS6011322B2 - fiber optic equipment - Google Patents
fiber optic equipmentInfo
- Publication number
- JPS6011322B2 JPS6011322B2 JP52108535A JP10853577A JPS6011322B2 JP S6011322 B2 JPS6011322 B2 JP S6011322B2 JP 52108535 A JP52108535 A JP 52108535A JP 10853577 A JP10853577 A JP 10853577A JP S6011322 B2 JPS6011322 B2 JP S6011322B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- fiber optic
- refractive index
- lens
- core portion
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
- G02B6/4203—Optical features
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
【発明の詳細な説明】
本発明は光を伝送する繊維光学装置に関し、特にその出
力端から発せられる光の出力エネルギーを増大せること
を目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber optic device for transmitting light, and particularly to increasing the output energy of light emitted from its output end.
従来、繊維状に形成され光を伝送する光学繊維の一方の
端面に発光体層を形成し電子ビームや紫外線を発光体層
に当てて発光させ、この光を伝送する繊維光学装置があ
った。Conventionally, there has been a fiber optic device in which a light-emitting layer is formed on one end surface of an optical fiber that is formed into a fibrous shape and transmits light, and the light-emitting layer is irradiated with an electron beam or ultraviolet rays to emit light and the light is transmitted.
このような繊維光学装置では、発光エネルギーが大であ
り、その発せられた光が損失少なく伝送されることが重
要である。第１図に示すように従来の繊維光学装置は、
屈折率ｎ，のコア部１の周囲表面に屈折率〜のクラッド
層２を有する光学繊維３と、その一方の端面に形成され
た発光体届４とからなり、通常ｎ，＞ｎ２として光が伝
送されるようになっている。上記繊維光学装置で伝送さ
れる光は関口数（Ｎ．Ａ）が１以下吻合、〜Ｘ＝９００
−Ｓｉｎ‐１申なる離職定される立体角内に存在する光
だけである。例えばコア部１の屈折率ｎ，が１．７５ク
ラッド層２の屈折率山が１．５の場合には８Ｍ＾ｘ＝９
００一５９０＝３１０となり、３１０以上９００ まで
の角度の光は出力端にまで達することなく、いわゆる損
失がかなり大きい。本発明は、上記従来利用できなかっ
た立体角中の光東を伝送させて出力端での光エネルギー
を高め能率や輝度を向上させる繊維光学装置である。In such a fiber optic device, the emitted light has a large amount of energy, and it is important that the emitted light be transmitted with little loss. As shown in Figure 1, the conventional fiber optic device is
It consists of an optical fiber 3 having a cladding layer 2 with a refractive index ~ on the peripheral surface of a core part 1 with a refractive index n, and a light emitter 4 formed on one end surface of the optical fiber 3. It is now being transmitted. The light transmitted by the fiber optic device has a Sekiguchi number (NA) of 1 or less, ~X=900
-Sin-1 is only the light that exists within the defined solid angle. For example, if the refractive index n of the core part 1 is 1.75 and the refractive index peak of the cladding layer 2 is 1.5, then 8M^x=9
00 - 590 = 310, and light at an angle of 310 to 900 does not reach the output end, resulting in a considerable loss. The present invention is a fiber optic device that transmits light in a solid angle, which has not been available in the past, to increase light energy at the output end and improve efficiency and brightness.
以下本発明の一実施列を第２図とともに説明する。第２
図ａに示す実施例では、屈折率ｎ，の円柱状コア部１１
の周囲表面に屈折率〜のクラッド層１２を設けてなる光
学繊維１３が、略球面状の凹所をコア部１１の一端面に
有し、屈折率比の半球状レンズ１４の略球面状の凸部が
上記凹所に接合している。One embodiment of the present invention will be described below with reference to FIG. Second
In the embodiment shown in Figure a, a cylindrical core portion 11 with a refractive index n,
An optical fiber 13 is provided with a cladding layer 12 having a refractive index of ~ on the peripheral surface thereof, and has a substantially spherical recess on one end surface of the core portion 11, and a substantially spherical recess of a hemispherical lens 14 having a refractive index ratio. A convex portion is joined to the recess.
そして、半球状レンズ１４の平面部に発光体層１５が付
設されている。ただし、ｎ，＞ｎ２、比＜ｎ，の関係に
ある。第２図ｂに示す実施例では、屈折率ｎ，の円柱状
コア部２１の周囲表面に屈折率＆のクラッド層２２を設
けてなる光学繊維２３が、略球面状の凹所をコア部２１
の一端面に有し、屈折率〜の球状レンズ２４の略半部が
上記凹所に接合しており、ｎ，＞い、比＜ｎ，の関係に
ある。A light emitter layer 15 is attached to the flat surface of the hemispherical lens 14. However, the relationship is n,>n2, and ratio<n. In the embodiment shown in FIG. 2b, an optical fiber 23 is formed by providing a cladding layer 22 with a refractive index & on the peripheral surface of a cylindrical core portion 21 with a refractive index n.
Approximately half of a spherical lens 24 having a refractive index of ˜ is joined to the recess, with the relationship n,>n, and ratio<n.
そして、球状レンズ２４の他の略半部に発光体層２５が
付設されている。また、第２図ｃに示す実施例では、前
述と同様の光学繊維３３が略球面状の凹所をコア部３１
の一端面に有し、屈折率〜の砲弾状レンズ３４の半球状
部分が上記凹所に接合し、レンズ３４の円錐状部分に発
光体層３５が付設されている。A light emitter layer 25 is attached to approximately the other half of the spherical lens 24. Further, in the embodiment shown in FIG.
A hemispherical portion of a bullet-shaped lens 34 having a refractive index of ˜ is joined to the recess, and a light-emitting layer 35 is attached to the conical portion of the lens 34 .
第１の実施例では、コア部１１と半球状レンズ１４とが
、屈折率で〜＜ｎ，の関係にあり、しかも発光体層１５
から発せられた光東がこの半球状レンズ１４により収束
される。In the first embodiment, the core portion 11 and the hemispherical lens 14 have a refractive index of ~<n, and the light emitting layer 15
The light emitted from the hemispherical lens 14 is converged by the hemispherical lens 14.
即ち従釆３１ｏであった８Ｍｘがさらに大きくなり、従
来では損失となっていた光の一部が出力端に達すること
が可能となって出力端での光エネルギーが上昇すること
になる。また、半球状レンズ１４の作用により、光東が
光学繊維１３の軸方向に対して小さい角度となり、光東
に指向性が生じてコア部１１とクラッド層１２との界面
での反射回数も減り、光学繊維１３の実効的な関口数も
向上する。ここでは第２図ａのもので説明したが、第２
図ｂ，ｃでも全く同様である。第２図ｂ，ｃのものでは
さらに加えて、光学繊維２３，３３が従釆と同一の径で
あっても発光体層２５．３５の形成面積が大（従来比１
４０％〜２００％）となって発光エネルギーの増大とい
う利点もある。上記のように本実施例の繊維光学装置で
は、出力端に達する光のエネルギーを向上させることが
できるので、例えばディスプレイ用の表示面に用いれば
高輝度かつ高コントラストの画像を得ることが可能であ
る。That is, 8Mx, which was the slave 31o, becomes even larger, and a part of the light, which was lost in the conventional case, becomes able to reach the output end, and the light energy at the output end increases. In addition, due to the action of the hemispherical lens 14, the optical axis becomes at a small angle with respect to the axial direction of the optical fiber 13, and the optical axis becomes directional, reducing the number of reflections at the interface between the core part 11 and the cladding layer 12. , the effective number of entrances of the optical fiber 13 is also improved. Here, the explanation was given using the one in Figure 2 a, but the second
The same is true for Figures b and c. In addition, in the cases of FIGS. 2b and 2c, even if the optical fibers 23 and 33 have the same diameter as the subordinate, the formation area of the luminescent layer 25.35 is large (10% compared to the conventional one).
40% to 200%), which has the advantage of increasing luminous energy. As mentioned above, the fiber optic device of this embodiment can improve the energy of light reaching the output end, so if it is used for a display screen, for example, it is possible to obtain a high-brightness and high-contrast image. be.
また一本一本の光学繊維を細くすることができるので、
高解像度とすることも容易で、消費電力の節減にも効果
がある。以上のように本発明は、光学繊維の一方の端面
に、略球面状の凹所を設け、上記凹所にはコア部の屈折
率よりも低い屈折率を有するレンズの略球面状の凸部を
接合し、上記しンズの上記凸部と反対側の面に発光体層
を付設するものであり、発光した光を収束して指向性を
持たせ、出力端での伝送光エネルギーを上昇させること
が可能となった繊維光学袋直を提供するものである。Also, since each optical fiber can be made thinner,
It is easy to achieve high resolution, and it is also effective in reducing power consumption. As described above, the present invention provides a substantially spherical recess on one end surface of an optical fiber, and the recess has a substantially spherical convex portion of a lens having a refractive index lower than the refractive index of the core portion. A light emitter layer is attached to the surface of the lens opposite to the convex part, and the emitted light is converged and given directionality, increasing the transmitted light energy at the output end. This provides a fiber optic bag that has become possible.
第１図は従来の繊維光学装置の一部断面側面図、第２図
ａ，ｈ，ｃはそれぞれ本発明の繊維光学装置の一実施例
を示す一部断面側面図である。
１１，２１，３１……コア部、１３，２３，３３・・…
・光学繊維、１４・・・・・・半球状レンズ、２４・・
・・・・球状レンズ、３４・・・・・・半球と円錐体を
縫合せたレンズ、１５，２５，３５・・・…発光体層。
第１図第２図FIG. 1 is a partially sectional side view of a conventional fiber optic device, and FIGS. 2a, h, and c are partially sectional side views showing an embodiment of the fiber optical device of the present invention. 11, 21, 31... Core part, 13, 23, 33...
・Optical fiber, 14... Hemispherical lens, 24...
... Spherical lens, 34 ... Lens made by suturing a hemisphere and a cone, 15, 25, 35 ... Luminous layer. Figure 1 Figure 2
Claims (1)
れかつ上記コア部の屈接率よりも低い屈接率を有するク
ラツド層とからなる光学繊維が、略球面状の凹所を上記
コア部の一端面に有し、上記凹所には上記コア部の屈接
率よりも低い屈接率を有するレンズの略球面状の凸部が
接合され、上記レンズは上記凸部と反対側の面に発光体
層を有していることを特徴とする繊維光学装置。1. An optical fiber consisting of a cylindrical core portion and a cladding layer provided on the peripheral surface of the core portion and having a refractive index lower than that of the core portion, is arranged in a substantially spherical recess. A substantially spherical convex portion of a lens having a refractive index lower than that of the core portion is bonded to the concave portion on one end surface of the core portion, and the lens has a substantially spherical convex portion on the opposite side of the convex portion. 1. A fiber optic device comprising a light emitter layer on a surface of the fiber optic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52108535A JPS6011322B2 (en) | 1977-09-08 | 1977-09-08 | fiber optic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52108535A JPS6011322B2 (en) | 1977-09-08 | 1977-09-08 | fiber optic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5441750A JPS5441750A (en) | 1979-04-03 |
| JPS6011322B2 true JPS6011322B2 (en) | 1985-03-25 |
Family
ID=14487263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52108535A Expired JPS6011322B2 (en) | 1977-09-08 | 1977-09-08 | fiber optic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011322B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63174340U (en) * | 1987-03-19 | 1988-11-11 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184982A (en) * | 1981-05-09 | 1982-11-13 | Mitsubishi Electric Corp | Discharge detector |
| JPS63115109A (en) * | 1986-10-31 | 1988-05-19 | Kuraray Co Ltd | Optical coupler |
| US4755119A (en) * | 1987-03-26 | 1988-07-05 | Kabushiki Kaisha Kobe Seiko Sho | Multiple-container type cold isostatic press |
| US20050078910A1 (en) * | 2003-10-08 | 2005-04-14 | Hickingbotham Dyson W. | Surgical wide-angle illuminator |
-
1977
- 1977-09-08 JP JP52108535A patent/JPS6011322B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63174340U (en) * | 1987-03-19 | 1988-11-11 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5441750A (en) | 1979-04-03 |
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