JPH0720734U - Optical space transmission device - Google Patents

Optical space transmission device

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Publication number
JPH0720734U
JPH0720734U JP5608793U JP5608793U JPH0720734U JP H0720734 U JPH0720734 U JP H0720734U JP 5608793 U JP5608793 U JP 5608793U JP 5608793 U JP5608793 U JP 5608793U JP H0720734 U JPH0720734 U JP H0720734U
Authority
JP
Japan
Prior art keywords
light
light source
optical axis
visible light
transmission device
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
JP5608793U
Other languages
Japanese (ja)
Inventor
義夫 野村
Original Assignee
東洋通信機株式会社
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 東洋通信機株式会社 filed Critical 東洋通信機株式会社
Priority to JP5608793U priority Critical patent/JPH0720734U/en
Publication of JPH0720734U publication Critical patent/JPH0720734U/en
Pending legal-status Critical Current

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  • Optical Communication System (AREA)

Abstract

(57)【要約】 (修正有) 【目的】従来の光空間伝送装置に簡単な視準器機能を持
たせることにより、特に短距離の光空間伝送装置の光軸
調整を容易にすることができる光空間伝送装置を提供す
る。 【構成】情報を伝送するための媒体である赤外光を出射
する赤外光光源1と、光軸調整の際に視準器機能として
用いられる可視光を出射する可視光光源12,5と、前
記赤外光光源より出射した光線を透過せしめ、かつ、前
記可視光光源より出射した光線を反射するハーフミラー
3a,3bと、前記ハーフミラーを出射した光線を平行
光に変換するレンズ4a,4bとを有し、前記ハーフミ
ラーを前記赤外光光源より出射する光線の光軸上且つ前
記可視光光源より出射する光線の光軸上に配置すること
により、可視光線を赤外光線に重畳せしめ、可視光のビ
ームスポットを受光側装置の受光レンズ上に位置させる
ことにより光伝送装置の光軸調整を可能とした光空間伝
送装置。
(57) [Summary] (Modified) [Purpose] It is possible to easily adjust the optical axis of a short-distance optical space transmission device by providing a conventional optical space transmission device with a simple collimator function. Provided is an optical space transmission device. [Structure] An infrared light source 1 for emitting infrared light, which is a medium for transmitting information, and visible light sources 12, 5 for emitting visible light used as a collimator function when adjusting an optical axis. Half mirrors 3a and 3b that transmit the light emitted from the infrared light source and reflect the light emitted from the visible light source, and a lens 4a that converts the light emitted from the half mirror into parallel light. 4b and arranging the half mirror on the optical axis of the light beam emitted from the infrared light source and on the optical axis of the light beam emitted from the visible light source, superimposing the visible light on the infrared ray. At the very least, an optical space transmission device capable of adjusting the optical axis of the optical transmission device by locating the beam spot of visible light on the light receiving lens of the device on the light receiving side.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は光空間伝送装置に関し、特に、光軸調整を容易にした光空間伝送装置 の構成に関する。 The present invention relates to an optical space transmission device, and more particularly, to a configuration of an optical space transmission device that facilitates optical axis adjustment.

【0002】[0002]

【従来技術】[Prior art]

多量の情報を伝送する手段の一として光通信は不可欠のものであり、その伝送 方式としては光ファイバを用いたもの或は空間伝送を利用したもの等がある。こ のうち空間伝送を利用した光通信は、電波法に制約されないワイヤレスの通信手 段として近年特に応用開発が進められている。 前述した光空間伝送では光ビームの直進性を利用して通信を行なうので、送信 光を受光器の受光面に正確に照射するために、送信側と受信側との間の光軸調整 を行なう必要がある。 Optical communication is indispensable as a means for transmitting a large amount of information, and its transmission method includes a method using an optical fiber or a method using space transmission. Of these, optical communication using spatial transmission has been particularly applied and developed in recent years as a wireless communication means not restricted by the Radio Law. In the above-mentioned optical space transmission, communication is performed by utilizing the straightness of the light beam, so the optical axis between the transmitting side and the receiving side is adjusted in order to irradiate the receiving surface of the light receiver with the transmitted light accurately. There is a need.

【0003】 しかしながら、一般的に光空間伝送を行なう場合、外来ノイズを避け、空間で の伝送損失を少なくする等の目的のために、赤外光が用いられており、光ビーム そのものは目視することができず、光軸調整はかなり困難な作業であった。従来 より一般的に用いられている光軸調整方法としては、視準器を用いて行なう方法 或は光の受信レベルをモニターしながら送信光を受光器の受信面に合わせる等の 方法があり、前者は光空間伝送装置以外に光視準器を用いるため、遠距離間の光 軸調整には好ましいが、短距離、例えば数メートル以内の光空間伝送にはその必 要性が乏しい。 また、後者は受信器の出力を確認しつつ、送信器及び受信器の位置及び備え付 け角度等を調整する必要があるため、光軸調整に時間が係ると云う問題点があっ た。However, in general, when performing optical space transmission, infrared light is used for the purpose of avoiding external noise and reducing transmission loss in space, and the light beam itself is visually observed. It was not possible, and adjusting the optical axis was a difficult task. Conventionally used optical axis adjustment methods include a method using a collimator, or a method in which the transmitted light is adjusted to the receiving surface of the light receiver while monitoring the light reception level. The former uses an optical collimator in addition to the optical space transmission device, so it is preferable for optical axis adjustment over long distances, but it is not necessary for short distance optical space transmission within a few meters, for example. In the latter case, it is necessary to adjust the positions of the transmitter and the receiver and the mounting angles while checking the output of the receiver, so that there is a problem that it takes time to adjust the optical axis.

【0004】[0004]

【考案の目的】[The purpose of the device]

本考案は上述したような従来の問題点に鑑みなされたものであって、従来の光 空間伝送装置に簡単な視準器機能を持たせることにより、特に短距離の光空間伝 送装置の光軸調整を容易にすることができる光空間伝送装置を提供することを目 的としている。 The present invention has been made in view of the above-mentioned conventional problems, and by providing a conventional optical space transmission device with a simple collimator function, an optical space transmission device for a short-distance optical transmission device is provided. The aim is to provide an optical space transmission device that can facilitate axis adjustment.

【0005】[0005]

【考案の概要】[Outline of the device]

この目的を達成するために本考案に係る光空間伝送装置は、情報を伝送するた めの媒体である赤外光を出射する赤外光光源と、光軸調整の際に視準器機能とし て用いられる可視光を出射する可視光光源と、前記赤外光光源より出射した光線 を透過せしめ、かつ、前記可視光光源より出射した光線を反射するハーフミラー と、前記ハーフミラーを出射した光線を平行光に変換するレンズとを有し、前記 ハーフミラーを前記赤外光光源より出射する光線の光軸上且つ前記可視光光源よ り出射する光線の光軸上に配置することにより、可視光線を赤外光線に重畳せし め、可視光のビームスポットを受光側装置の受光レンズ上に位置させることによ り光伝送装置の光軸調整を可能とした光空間伝送装置。 In order to achieve this object, the optical space transmission device according to the present invention has an infrared light source that emits infrared light, which is a medium for transmitting information, and a collimator function when adjusting the optical axis. Used as a visible light source that emits visible light, a half mirror that transmits the light beam emitted from the infrared light source and reflects the light beam emitted from the visible light source, and a light beam emitted from the half mirror By converting the half mirror into a parallel light and arranging the half mirror on the optical axis of the light beam emitted from the infrared light source and on the optical axis of the light beam emitted from the visible light source. An optical space transmission device that allows the optical axis of the optical transmission device to be adjusted by superimposing a light beam on an infrared light beam and positioning the beam spot of visible light on the light receiving lens of the device on the light receiving side.

【0006】[0006]

【実施例】【Example】

以下、図面に示した実施例に基づいて本考案を詳細に説明する。 図1は本考案の一実施例を示す光空間伝送装置の概略構成を示す図であって、 同図に於いてA及びBは送受信器である。 まず、装置Aを送信器として説明すると、送信器Aには情報を伝送する媒体で ある赤外光を出射する光源1と、視準器機能のために備えられた可視光光源2と 、前記赤外光光源1及び可視光光源2より出射した光線を透過或は反射させるハ ーフミラー3aと、該ハーフミラーよりの光線を平行光に変換するレンズ4aと を備える。 また、受信側装置である装置Bには受信した平行光線を収束光に変換するレン ズ4bと、該レンズ4bを出射した光線の内、可視光線を反射し、赤外光線を透 過せしめるハーフミラー3bと、赤外光線を検出する赤外光受光器6を備える。 尚、5は装置Bを送信側装置として用いた場合に使用する可視光光源である。 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a diagram showing a schematic configuration of an optical space transmission device showing an embodiment of the present invention, in which A and B are transceivers. First, the device A will be described as a transmitter. The transmitter A includes a light source 1 for emitting infrared light, which is a medium for transmitting information, and a visible light source 2 provided for a collimator function. A half mirror 3a that transmits or reflects the light rays emitted from the infrared light source 1 and the visible light source 2 and a lens 4a that converts the light rays from the half mirror into parallel light rays. The device B, which is the receiving device, includes a lens 4b for converting the received parallel rays into convergent light and a half ray for reflecting visible rays and transmitting infrared rays among the rays emitted from the lens 4b. The mirror 3b and the infrared light receiver 6 which detects an infrared ray are provided. In addition, 5 is a visible light source used when the device B is used as a transmission side device.

【0007】 このように構成した光空間伝送装置に於いて、送信器Aでは情報伝送用の赤外 光光源1を駆動し、受信器側に波長が800nm以上の赤外光を出射すると共に 、可視光光源2からは波長が660nm以下の可視光を出射する。 送受信器A及びBに用いられているハーフミラー3a、3bは波長が800n m以上の赤外光は透過させ、波長が660nm以下の可視光は反射させるものを 用いているため、送信器A側においては赤外光光源1より出射した赤外光に可視 光光源2より出射した可視光線が重畳し、レンズ4aを介して受信器B側に出射 される。また、受信器B側においては受信した光線のうち可視光成分のみがハー フミラー3bの表面にて反射するので、赤外光成分のみがハーフミラー3bを透 過して赤外光受光器6に検出される。In the optical space transmission device configured as described above, the transmitter A drives the infrared light source 1 for information transmission to emit infrared light having a wavelength of 800 nm or more to the receiver side. The visible light source 2 emits visible light having a wavelength of 660 nm or less. The half mirrors 3a and 3b used in the transmitters / receivers A and B are those that transmit infrared light having a wavelength of 800 nm or more and reflect visible light having a wavelength of 660 nm or less. In, the visible light emitted from the visible light source 2 is superimposed on the infrared light emitted from the infrared light source 1, and the visible light is emitted to the receiver B side through the lens 4a. On the side of the receiver B, only the visible light component of the received light is reflected on the surface of the half mirror 3b, so only the infrared light component passes through the half mirror 3b and reaches the infrared light receiver 6. To be detected.

【0008】 したがって、光軸調整の際には送信側装置Aより出射される可視光線が重畳し た赤外光線を受信側装置Bのレンズに照射されるように、即ち、可視光のスポッ トがレンズ上に現われるように送信器及び受信器の位置及び傾きを調整すれば簡 単に光軸調整を行なうことができる。 尚、赤外光受光器6に用いられているホトダイオードの波長特性は広帯域なも のを用いることが多いため、赤外光により情報を伝送している際に誤って可視光 が出射され、赤外光に重畳した場合、正しい情報伝送が損なわれる虞れがあるた め受信側装置にハーフミラー3bを設けている。したがって、光軸調整時にのみ 可視光を出射するものであれば、受光側装置に必要な構成部品はレンズ4b及び 赤外光受光器6のみでよい。Therefore, when the optical axis is adjusted, the infrared ray on which the visible light emitted from the transmission side device A is superimposed is applied to the lens of the reception side device B, that is, the visible light spot is spotted. The optical axis can be easily adjusted by adjusting the positions and tilts of the transmitter and the receiver so that the light beam appears on the lens. In addition, since the wavelength characteristic of the photodiode used in the infrared light receiver 6 has a wide band in many cases, visible light is erroneously emitted during transmission of information by infrared light and red light is transmitted. Since the correct information transmission may be impaired when superposed on the external light, the receiving side device is provided with the half mirror 3b. Therefore, if the device emits visible light only when the optical axis is adjusted, the lens 4b and the infrared light receiver 6 are the only components necessary for the light-receiving side device.

【0009】[0009]

【考案の効果】[Effect of device]

本考案は上述したように構成し且つ機能するものであるから、情報伝送用の赤 外光を使用した光ビームに影響を与えることなく、可視光を前記赤外光と同一の 光軸上に重畳するため、光ビームを直接目視することができ光軸調整が非常に容 易となる利点を有する。 Since the present invention is configured and functions as described above, the visible light is transmitted on the same optical axis as the infrared light without affecting the light beam using the infrared light for information transmission. Since they are superposed, the light beam can be directly viewed and the optical axis can be adjusted very easily.

【0010】[0010]

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案の一実施例を示す光空間伝送装置の概略
構成を示す図。
FIG. 1 is a diagram showing a schematic configuration of an optical space transmission device showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1・・・赤外光光源、 2、5・・・可視光光源、3
a、3b・・・ハーフミラー、 4a、4b・・・レ
ンズ、6・・・赤外光受光器
1 ... Infrared light source, 2, 5 ... Visible light source, 3
a, 3b ... Half mirror, 4a, 4b ... Lens, 6 ... Infrared light receiver

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】情報を伝送するための媒体である赤外光を
出射する赤外光光源と、 光軸調整の際に視準器機能として用いられる可視光を出
射する可視光光源と、 前記赤外光光源より出射した光線を透過せしめ、かつ、
前記可視光光源より出射した光線を反射するハーフミラ
ーと、 前記ハーフミラーを出射した光線を平行光に変換するレ
ンズとを有し、 前記ハーフミラーを前記赤外光光源より出射する光線の
光軸上且つ前記可視光光源より出射する光線の光軸上に
配置することにより、可視光線を赤外光線に重畳せしめ
たことを特徴とする空間伝送装置。
1. An infrared light source that emits infrared light, which is a medium for transmitting information, and a visible light source that emits visible light used as a collimator function when adjusting the optical axis. Allows the light emitted from the infrared light source to pass through, and
An optical axis of a light beam emitted from the infrared light source, and a half mirror that reflects a light beam emitted from the visible light source, and a lens that converts the light beam emitted from the half mirror into parallel light. A spatial transmission device characterized in that visible light is superposed on infrared light by being arranged above and on the optical axis of the light emitted from the visible light source.
JP5608793U 1993-09-22 1993-09-22 Optical space transmission device Pending JPH0720734U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5608793U JPH0720734U (en) 1993-09-22 1993-09-22 Optical space transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5608793U JPH0720734U (en) 1993-09-22 1993-09-22 Optical space transmission device

Publications (1)

Publication Number Publication Date
JPH0720734U true JPH0720734U (en) 1995-04-11

Family

ID=13017320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5608793U Pending JPH0720734U (en) 1993-09-22 1993-09-22 Optical space transmission device

Country Status (1)

Country Link
JP (1) JPH0720734U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006240658A (en) * 2005-03-02 2006-09-14 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd Rotary filling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006240658A (en) * 2005-03-02 2006-09-14 Mitsubishi Heavy Industries Food & Packaging Machinery Co Ltd Rotary filling device

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