JPS62237770A - Rotor signal transmitter - Google Patents

Rotor signal transmitter

Info

Publication number
JPS62237770A
JPS62237770A JP61081451A JP8145186A JPS62237770A JP S62237770 A JPS62237770 A JP S62237770A JP 61081451 A JP61081451 A JP 61081451A JP 8145186 A JP8145186 A JP 8145186A JP S62237770 A JPS62237770 A JP S62237770A
Authority
JP
Japan
Prior art keywords
light
light emitting
emitting element
signals
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.)
Granted
Application number
JP61081451A
Other languages
Japanese (ja)
Other versions
JPH0551191B2 (en
Inventor
Yutaka Kaneba
金場　豊
Shinsuke Shikama
信介 鹿間
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP61081451A priority Critical patent/JPS62237770A/en
Publication of JPS62237770A publication Critical patent/JPS62237770A/en
Publication of JPH0551191B2 publication Critical patent/JPH0551191B2/ja
Granted legal-status Critical Current

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
    • G02B6/36—Mechanical coupling means
    • G02B6/3604—Rotary joints allowing relative rotational movement between opposing fibre or fibre bundle ends
    • 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
    • G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To obtain a rotor signal transmitter which can optically transmit multichannel signals by arranging a light emitting element and a tapered reflecting mirror on a rotary unit and a stationary unit, respectively, collecting a signal light from the element by the mirror, and introducing the signal light by photoconducting means to a photodetector. CONSTITUTION:Signals modulated by light emitting elements 11, 12 provided on the printed substrate 12 of a rotary drum 1 which rotates from signals from magnetic heads 3, 4 are emitted as optical signals, and the optical signal col lected to a throat 24 is output by an optical guide 15 and a rod lens 15 as an optical beam 17. Since the output beam 17 has two types of wavelengths, it is separated into optical beams 19, 20 in response to the wavelengths by a prism 18, incident on photodetectors 21, 22 to obtain signals corresponding to the signals input into the elements 11,12, and 2 channel signals are transmitted from the rotating elements 11, 12 to the stationary photodetectors 21, 22.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は例えばビデオテープレコーダ、回転機、ロボ
ットの腕などに用いられ１回転部と固定部間で信号伝達
が行なわれる回転体信号伝達装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating body signal transmission device that is used in, for example, video tape recorders, rotating machines, robot arms, etc., and transmits signals between a rotating part and a fixed part. It is related to.

〔従来の技術］ 第７図は例えば、特開昭４８−３７０８１号公報に示さ
れた従来の回転体信号伝達装置を示す断面図であり、第
８図はその斜視図である。これら第７図、第８図におい
て、（１）はＶＴＲの回転ドラム、（２）は同じく固定
ドラム、（３）（４）は磁気ヘッド（第７図には図示せ
ず）　、（５）は回転ドラム（１）に搭載された増幅器
、（６）は回転軸、（７）は例えば発光ダイオードなど
の発光素子、（８）はホトダイオード、ホトトランジス
タなどの受光素子、（９）はブラシ、（１０）は支持体
である。[Prior Art] FIG. 7 is a sectional view showing a conventional rotating body signal transmission device disclosed in, for example, Japanese Patent Laid-Open No. 48-37081, and FIG. 8 is a perspective view thereof. In these Figures 7 and 8, (1) is the rotating drum of the VTR, (2) is the same fixed drum, (3) and (4) are the magnetic heads (not shown in Figure 7), (5). is an amplifier mounted on a rotating drum (1), (6) is a rotating shaft, (7) is a light emitting element such as a light emitting diode, (8) is a light receiving element such as a photodiode or phototransistor, (9) is a brush, (10) is a support.

このような構成をなす従来の回転体信号伝達装置におい
て、まず記録動作を行なう場合は、ブラシ（９）を介し
て映像信号等が入力され、磁気テープに記録が行なわれ
る。一方、再生動作時においては、ブラシ（９）から増
幅器（５）に電源が供給されるとともに、映像信号等が
磁気ヘッド（３）（４）を介して増幅器（５）に入力さ
れ、この増幅器（５）によって増幅されたのちその映像
信号等が発光素子（７）に与えられる。この発光素子（
７）はその出力光を数ＭＨｚの高周波で変調することが
でき、この場合その出力は映像信号で変調されたもので
ある。In the conventional rotary body signal transmission device having such a configuration, when a recording operation is first performed, a video signal or the like is inputted through the brush (9) and recorded on a magnetic tape. On the other hand, during playback operation, power is supplied from the brush (9) to the amplifier (5), and video signals etc. are input to the amplifier (5) via the magnetic heads (3) and (4). After being amplified by (5), the video signal and the like are given to the light emitting element (7). This light emitting element (
7) can modulate its output light with a high frequency of several MHz, and in this case, its output is modulated with a video signal.

受光素子（８）は第７図、第８図に示すように発光素子
（７）と向い合って配置されているので、発光素子（８
）からの光が受光素子（８）に伝達される。Since the light receiving element (8) is arranged facing the light emitting element (7) as shown in FIGS. 7 and 8, the light emitting element (8)
) is transmitted to the light receiving element (8).

［発明が解決しようとする問題点コ 従来の回転体信号伝達装置は以上のように構成されてい
るので５発光素子（７）と、これに対向する受光素子（
８）の位置は回転軸（６）と同一軸上に配置する必要が
あり、その位置に高い精度が必要となりコストが上昇す
るという問題点があり、また発光素子の設置場所として
回転軸（６）の両端面を利用したとしても３チャンネル
以上の多チャンネルの伝達は困這である。そのためＰＣ
Ｍ録音付の８ミリビデオや、デジタルＶＴＲ１高品位Ｖ
ＴＲなどテープに多チャンネルの記録再生を行なうＶＴ
Ｒに対応することができないという問題点があった。[Problems to be Solved by the Invention] Since the conventional rotating body signal transmission device is configured as described above, it has five light-emitting elements (7) and a light-receiving element (7) facing thereto.
8) must be placed on the same axis as the rotation axis (6), which requires high precision in its position and increases cost. ), it is difficult to transmit multiple channels of three or more channels even if both end faces of the antenna are used. Therefore, PC
8mm video with M recording, digital VTR1 high quality V
VT that records and plays multiple channels on tape such as TR
There was a problem in that it was not compatible with R.

この発明は上記のような問題点を解消するためになされ
たもので、多チャンネルの信号を光学的に伝達できる回
転体信号伝達装置を得ることを目的とする。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain a rotating body signal transmission device that can optically transmit multi-channel signals.

［問題点を解決するための手段］ この発明に係る回転体信号伝達装置は、回転部と固定部
それぞれに発光素子とテーパー形状の反射鏡を配し、発
光素子から発光された信号光を上記反射鏡で集光すると
ともに、導光手段によってそれら、集光された信号光を
受光素子に導くようにしたものである。[Means for Solving the Problems] The rotating body signal transmission device according to the present invention includes a light emitting element and a tapered reflecting mirror in each of the rotating part and the fixed part, and transmits the signal light emitted from the light emitting element to the above-mentioned. A reflecting mirror collects light, and a light guide means guides the collected signal light to a light receiving element.

［作　用］ この発明におけるテーパー形状の反射鏡は開口部に入光
する発光素子からの信号光を集光するので、回転部と固
定部との関係においてその発光軸と受光軸とが高精度に
一致する巳とがない場合でも、容易に信号光を伝達する
ことが可能となり。[Function] Since the tapered reflecting mirror of the present invention condenses the signal light from the light emitting element that enters the opening, the light emitting axis and the light receiving axis are aligned with high precision in the relationship between the rotating part and the fixed part. Even if there is no matching snake, it is possible to easily transmit signal light.

かつ複数の発光素子がそれぞれ異なる波長の光を発生す
る場合においても、それら複数の発光素子の光はテーパ
ー形状の反射鏡により集光され、受光素子に導入される
。Even when a plurality of light emitting elements generate light of different wavelengths, the light from the plurality of light emitting elements is collected by the tapered reflecting mirror and introduced into the light receiving element.

［実施例コ 以下この発明の実施例を図について説明する。[Example code] Embodiments of the present invention will be described below with reference to the drawings.

第１図は本発明の一実施例による回転体信号伝達装置を
示す断面図である。図中、第７図と同一符号のものは同
一のものであり、ここではその説明を省略する。図にお
いて、（１１）　（１２）は互いに異なる波長を有する
発光素子であり、プリント基板（１３）上に搭載されて
いる。またこれら発光素子（１１）（１２）は磁気ヘッ
ド（３）　（４）の出力、又はそれらの信号から処理さ
れた個別の信号により変調される。（１３）は回転ドラ
ム（１）と共に回転するプリント基板である。（１４）
は固定側にもうけられたテーパー反射鏡（反射鏡）であ
る。このテーパー反射鏡は円錐面状の反射鏡で、その内
面は光を反射しやすいように構成されている。第２図に
上述における要部の拡大図を示す。図における上方向へ
向かい、その大部分のエネルギーはテーパー反射鏡（１
４）に捕えられて、スロート部（２４）に集光される。FIG. 1 is a sectional view showing a rotating body signal transmission device according to an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 7 are the same, and the explanation thereof will be omitted here. In the figure, (11) and (12) are light emitting elements having mutually different wavelengths, and are mounted on a printed circuit board (13). Further, these light emitting elements (11) and (12) are modulated by the outputs of the magnetic heads (3) and (4) or individual signals processed from these signals. (13) is a printed circuit board that rotates together with the rotating drum (1). (14)
is a tapered reflector (reflector) provided on the fixed side. This tapered reflecting mirror is a conical reflecting mirror, and its inner surface is configured to easily reflect light. FIG. 2 shows an enlarged view of the main parts mentioned above. Most of the energy is directed upward in the figure, and most of the energy is absorbed by the tapered reflector (1
4) and is focused on the throat section (24).

このスロート部（２４）には光ガイド（１５）が接続さ
れ。A light guide (15) is connected to this throat portion (24).

テーパー反射鏡（１４）に集められた光が光ガイド（１
５）を通して導びかれる。光ガイド（１５）の端面（２
３）にはロッドレンズ（１６）が接合されている。この
ロッドレンズ（１６）は、中心軸附近が外周部より屈折
率の高いものであり、端面（２３）から入射した光はこ
のロッドレンズ（１６）で集光され、光ビーム（１７）
として出力される。（１８）はプリズムであり。The light collected by the tapered reflector (14) passes through the light guide (1
5) be guided through. The end face (2) of the light guide (15)
3) is joined with a rod lens (16). This rod lens (16) has a higher refractive index near the central axis than the outer circumference, and the light incident from the end face (23) is condensed by this rod lens (16), forming a light beam (17).
is output as (18) is a prism.

光ビーム（１７）に含まれる波長に応じて光ビーム（１
９）と（２０）に分離される。（２１）　（２２）は受
光素子であり、それら各出力端子から発光素子（１１）
（１２）に加えられた信号に対応した信号を得るもので
ある。The light beam (17) depends on the wavelength contained in the light beam (17).
It is separated into (9) and (20). (21) and (22) are light receiving elements, and from their respective output terminals to the light emitting element (11)
A signal corresponding to the signal added to (12) is obtained.

上記のように構成された本発明の回転体信号伝達装置の
動作について以下説明する。磁気ヘッド（３）（４）か
らの信号が回転する回転ドラム（１）のプリント基板（
１２）上に設けられた発光素子（１１）（１２）によっ
てそれぞれ個別の信号に変調される。この変調された信
号が発光素子（１１）（１２）からの光信号として発光
され、固定するテーパー反射鏡（１４）にその光エネル
ギーが捕えられ、スロート部（２４）に集光される。こ
のスロート部（２４）に集光された光信号は光ガイド（
１５）、ロッドレンズ（１６）によって光ビーム（１７
）として出力される。出力された光ビーム（１７）は２
種の波長を有するため、プリズム（１８）でそれら波長
に応じて光ビーム（１９）と（２０）に分離される。こ
れら光ビーム（１９）　（２０）はそれぞれ受光素子（
２１）（２２）に入射し、この受光素子（２１）（２２
）によって、上述の発光素子（１１）　（１２）に入力
された信号に対応する信号を得る。The operation of the rotating body signal transmission device of the present invention configured as described above will be explained below. The printed circuit board (
12) Modulated into individual signals by the light emitting elements (11) and (12) provided above. This modulated signal is emitted as an optical signal from the light emitting elements (11) and (12), and the optical energy is captured by the fixed tapered reflecting mirror (14) and focused on the throat portion (24). The optical signal focused on this throat part (24) is transmitted through the optical guide (
15), a light beam (17) by a rod lens (16)
) is output as The output light beam (17) is 2
Since the light has different wavelengths, it is separated by a prism (18) into light beams (19) and (20) according to these wavelengths. These light beams (19) and (20) are connected to the light receiving element (
21) (22), and this light receiving element (21) (22)
), a signal corresponding to the signal input to the above-mentioned light emitting elements (11) and (12) is obtained.

このようにして２チヤンネルの信号が、回転する発光素
子（１１）（１２）から固定された受光素子（２１）（
２２）に伝達される。すなわち発光素子（１１）（１２
）とテーパー反射鏡（１４）は上述のごとく配置されて
いるため、回転ドラム（１）が回転しても信号の伝達が
支障なく行なわれる。In this way, two-channel signals are transmitted from the rotating light emitting elements (11) (12) to the fixed light receiving elements (21) (
22). That is, the light emitting elements (11) (12
) and the tapered reflecting mirror (14) are arranged as described above, so that even when the rotating drum (1) rotates, signal transmission is performed without any problem.

なお、上記実施例では第２図に示すように円錐面状のテ
ーパー反射鏡（１４）を用いて構成したが、第３図に示
すごとくラッパ形状をなす形状としても鳥い。また、光
ガイド（１５）を用いずテーパー反射鏡（１４）とロッ
ドレンズ（１６）を直接結合してもよい。またロッドレ
ンズ（１６）、プリズム（１８）の代りに第４図に示す
ように光の回折格子を表面に有する凹面鏡を用いて、光
を波長毎に分離し、各受光素子（２１）　（２２）に供
給してもよく、さらに第５図に示すように１発光素子（
１１）（１２）のそれぞれの波長の光を反射する反射鏡
（２５）　（２６）を用いてもよい。In the above embodiment, a tapered reflecting mirror (14) having a conical surface is used as shown in FIG. 2, but a trumpet-shaped reflector as shown in FIG. 3 may also be used. Alternatively, the tapered reflecting mirror (14) and the rod lens (16) may be directly coupled without using the light guide (15). In addition, instead of the rod lens (16) and prism (18), a concave mirror having a light diffraction grating on its surface is used as shown in Figure 4 to separate the light into wavelengths, and each light receiving element (21) (22 ), and as shown in FIG.
Reflecting mirrors (25) and (26) may be used to reflect light of wavelengths 11) and 12, respectively.

また、上記実施例では発光素子（１１）　（１２）を回
転する側に設け、テーパー反射鏡（１４）を固定して配
設したが、磁気ヘッド（３）（４）から磁気テープ（図
示せず）へ記録信号を送出する場合、第６図に示すよう
に発光素子（１１）　（１２）を固定側のプリント基板
（１３）上に設け、テーパー反射鏡（１４）、ロッドレ
ンズ（１６）、プリズム（１８）、受光素子（２１）　
（２２）を回転ドラム（１）に配設するようにしてもよ
く、上記実施例と同様の効果を奏する。Furthermore, in the above embodiment, the light emitting elements (11) and (12) were provided on the rotating side, and the tapered reflector (14) was fixedly disposed, but the magnetic tape (not shown) was connected to the magnetic head (3) and (4). When sending a recording signal to a PCB, as shown in Figure 6, the light emitting elements (11) (12) are installed on the printed circuit board (13) on the fixed side, and the tapered reflector (14) and rod lens (16) are mounted on the fixed side printed circuit board (13). , prism (18), light receiving element (21)
(22) may be arranged on the rotating drum (1), and the same effect as in the above embodiment can be achieved.

なお、上記実施例では一例としてＶＴＲの場合について
述べたが、これに限らず回転機のローターの温度の計測
等、回転部から固定部への信号の伝達、あるいはロボッ
トの関節部の信号の伝達に用いてもよく、上記実施例と
同様の効果を奏する。In the above embodiment, the case of a VTR was described as an example, but the invention is not limited to this, and it can also be used to measure the temperature of a rotor of a rotating machine, transmit a signal from a rotating part to a fixed part, or transmit a signal from a joint part of a robot. It may also be used for this purpose, and the same effect as in the above embodiment can be obtained.

さらに、発光素子又は受光素子はそれぞれ２個に限らず
、１個又は３個以上でもかまわない。Furthermore, the number of light emitting elements or light receiving elements is not limited to two, but may be one or three or more.

［発明の効果］ 以上のように、この発明によれば固定側と回転側におけ
る光信号の伝達に係り、異なる波長の光を発生する複数
の発光素子と、それら光を集光するテーパー状の反射鏡
により回転体信号伝達装置を構成したので、第１図に示
す発光素子は必ずしも回転軸上に配置する必要がなく、
少なくともテーパー反射鏡、開口部の範囲内に設ければ
よい。[Effects of the Invention] As described above, according to the present invention, a plurality of light emitting elements that generate light of different wavelengths and a tapered element that converges the light are used for transmitting optical signals between the fixed side and the rotating side. Since the rotating body signal transmission device is configured with a reflecting mirror, the light emitting element shown in FIG. 1 does not necessarily need to be placed on the rotation axis.
At least the tapered reflector may be provided within the range of the opening.

さらには、テーパー反射鏡の軸と回転軸の軸も同一軸上
に一致される必要がないため、発光素子、テーパー反射
鏡の配置に自由度が大きく、従来の装置に比べて取付精
度の許容差が広いため安価に構成でき、また受光素子を
多数配置することにより多チャンネル化が容易であると
いう効果がある。Furthermore, since the axis of the tapered reflector and the axis of rotation do not need to be aligned on the same axis, there is a greater degree of freedom in the arrangement of the light emitting element and the taper reflector, and the tolerance for mounting accuracy is higher than with conventional devices. Since the difference is wide, it can be constructed at low cost, and by arranging a large number of light-receiving elements, it is easy to create multiple channels.

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

第１図はこの発明の一実施例による回転体信号伝達装置
を示す断面図、第２図は第１図に示す発光素子及びテー
パー反射鏡等の要部を拡大した詳細図、第３図はこの発
明の他の実施例を示すテーパー反射鏡を示す図、第４図
はこの発明の他の実施例における回折格子を示す図、第
５図はこの発明の他の実施例における光ビームの波長に
よる分層状態を示す図、第６図はこの発明の他の実施例
における固定側から回転側へ信号を伝達する場合の構成
を示す断面図、第７図は従来の回転体信号伝達装置を示
す断面図、第８図はその斜視図である。 図において、（１）は回転ドラム、　（３）（４）は磁
気ヘッド、（６）は回転軸、（１１）　（１２）は発光
素子、　（１３）はプリント基板、（１４）は反射鏡、
（１５）は光ガイド、（１６）はロッドレンズ、（１７
）　（１９）　（２０）は光ビーム、（１８）はプリズ
ム、（２１）　（２２）は受光素子である。 なお各図中同一符号は同一、又は相当部分を示す。FIG. 1 is a sectional view showing a rotating body signal transmission device according to an embodiment of the present invention, FIG. 2 is an enlarged detailed view of main parts such as a light emitting element and a tapered reflector shown in FIG. 1, and FIG. A diagram showing a tapered reflecting mirror showing another embodiment of the invention, FIG. 4 a diagram showing a diffraction grating in another embodiment of the invention, and FIG. 5 a wavelength of a light beam in another embodiment of the invention. FIG. 6 is a sectional view showing the structure of another embodiment of the present invention in which a signal is transmitted from the stationary side to the rotating side, and FIG. 7 is a diagram showing a conventional rotating body signal transmission device. The sectional view shown in FIG. 8 is a perspective view thereof. In the figure, (1) is a rotating drum, (3) and (4) are magnetic heads, (6) is a rotating shaft, (11) and (12) are light emitting elements, (13) is a printed circuit board, and (14) is a reflective mirror. ,
(15) is a light guide, (16) is a rod lens, (17)
) (19) (20) is a light beam, (18) is a prism, (21) and (22) are light receiving elements. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (4)

【特許請求の範囲】[Claims] （１）ＶＴＲ等における回転部の信号を固定部に信号伝
達する回転体信号伝達装置において、上記回転部または
固定部の一方に少なくとも１つ以上の発光素子を配する
とともに、この発光素子に対向する上記回転部または固
定部の他方に上記発光素子からの信号光を反射すること
により熱光するテーパ状をなす反射鏡を配し、上記反射
鏡が受光する上記発光素子からの信号光を導びく導光手
段と、この導光手段からの光ビームを介して受光する少
なくとも１つ以上の受光素子とを備えたことを特徴とす
る回転体信号伝達装置。(1) In a rotating body signal transmission device that transmits a signal from a rotating part of a VTR or the like to a fixed part, at least one light emitting element is disposed on one of the rotating part or the fixed part, and a light emitting element is arranged opposite to the light emitting element. A tapered reflecting mirror that generates heat by reflecting the signal light from the light emitting element is disposed on the other of the rotating part or the fixed part, and the signal light from the light emitting element received by the reflecting mirror is guided. What is claimed is: 1. A rotating body signal transmission device comprising: a rotating light guide; and at least one light receiving element that receives a light beam from the light guide. （２）上記発光素子は入力する各チャンネル信号に応じ
て波長の異なる信号光を発光する複数の発光素子が設け
られるとともに、上記導光手段に波長の異なる光ビーム
を分離して導光する分光手段を該光ビーム線上に設け、
かつ上記分光手段から分離された複数の光ビームをそれ
ぞれ受光する複数の上記受光素子を備え、上記発光素子
に入力する複数のチャンネル信号を上記複数の受光素子
により該チャンネル信号別に伝達するよう構成したこと
を特徴とする特許請求の範囲第１項記載の回転体信号伝
達装置。(2) The light emitting element is provided with a plurality of light emitting elements that emit signal light of different wavelengths according to each input channel signal, and the light guide means separates and guides light beams of different wavelengths. means are provided on the light beam line;
and a plurality of the light receiving elements each receiving a plurality of light beams separated from the spectroscopic means, and configured to transmit a plurality of channel signals input to the light emitting element individually by the plurality of light receiving elements. A rotating body signal transmission device according to claim 1, characterized in that: （３）上記分光手段は波長の異なる光ビームを分光する
プリズムであることを特徴とする特許請求の範囲第２項
記載の回転体信号伝達装置。(3) The rotating body signal transmission device according to claim 2, wherein the spectroscopic means is a prism that spectrally separates light beams having different wavelengths. （４）上記分光手段は表面に光の回折格子を有する凸面
鏡であり、この凸面鏡に上記回折格子で、波長の異なる
光ビームを分光するよう構成したことを特徴とする特許
請求の範囲第２項記載の回転体信号伝達装置。(4) The spectroscopic means is a convex mirror having a light diffraction grating on its surface, and the convex mirror is configured to use the diffraction grating to separate light beams having different wavelengths. The rotary body signal transmission device described above.
JP61081451A 1986-04-07 1986-04-07 Rotor signal transmitter Granted JPS62237770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61081451A JPS62237770A (en) 1986-04-07 1986-04-07 Rotor signal transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61081451A JPS62237770A (en) 1986-04-07 1986-04-07 Rotor signal transmitter

Publications (2)

Publication Number Publication Date
JPS62237770A true JPS62237770A (en) 1987-10-17
JPH0551191B2 JPH0551191B2 (en) 1993-07-30

Family

ID=13746766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61081451A Granted JPS62237770A (en) 1986-04-07 1986-04-07 Rotor signal transmitter

Country Status (1)

Country Link
JP (1) JPS62237770A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850838A (en) * 1981-09-21 1983-03-25 Sony Corp Signal transmitter
JPS59180207U (en) * 1983-05-19 1984-12-01 ソニー株式会社 rotary photo coupler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850838A (en) * 1981-09-21 1983-03-25 Sony Corp Signal transmitter
JPS59180207U (en) * 1983-05-19 1984-12-01 ソニー株式会社 rotary photo coupler

Also Published As

Publication number Publication date
JPH0551191B2 (en) 1993-07-30

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