JPH05175911A - Omnidirectional light receiving device - Google Patents
Omnidirectional light receiving deviceInfo
- Publication number
- JPH05175911A JPH05175911A JP3341374A JP34137491A JPH05175911A JP H05175911 A JPH05175911 A JP H05175911A JP 3341374 A JP3341374 A JP 3341374A JP 34137491 A JP34137491 A JP 34137491A JP H05175911 A JPH05175911 A JP H05175911A
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- omnidirectional
- prism
- receiving device
- light
- 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.)
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- Optical Communication System (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばワイヤレスリモ
コンを備えたカメラ一体型ビデオテープレコーダの赤外
線受光装置に使用して好適な全方向受光装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an omnidirectional light receiving device suitable for use in an infrared light receiving device of a camera-integrated video tape recorder equipped with a wireless remote controller.
【０００２】[0002]
【従来の技術】図７は従来例による全方向受光装置を示
しており、斯かる全方向受光装置は受光部１０とこの受
光部１０の上面に装着された全方向プリズム２０とを有
する。受光部１０は図９に示すように、全方向プリズム
２０からの光線を受け入れる受光面１２を有する。2. Description of the Related Art FIG. 7 shows a conventional omnidirectional light receiving device, which has a light receiving portion 10 and an omnidirectional prism 20 mounted on the upper surface of the light receiving portion 10. As shown in FIG. 9, the light receiving unit 10 has a light receiving surface 12 that receives a light beam from the omnidirectional prism 20.
【０００３】受光面１２にはホトダイオードの如き受光
素子が装着されており、全方向受光装置に入射された光
線のうち受光面１２によって受光された光線が電気信号
に変換されることができる。A light receiving element such as a photodiode is mounted on the light receiving surface 12, and among the light rays incident on the omnidirectional light receiving device, the light rays received by the light receiving surface 12 can be converted into electric signals.
【０００４】全方向受光装置はワイヤレスリモコンの赤
外線受光装置に使用されてよく、入力信号である赤外線
を受光して図示しない端子より出力信号である電気信号
を出力することができるように構成される。The omnidirectional light receiving device may be used for an infrared light receiving device of a wireless remote controller, and is constructed so that it can receive infrared rays as an input signal and output an electric signal as an output signal from a terminal (not shown). ..
【０００５】図８に全方向プリズム２０の一例の詳細を
示す。全方向プリズム２０は例えば光透過性の樹脂から
なる角柱の上面に角錐体の凹部を形成して構成されてよ
く、図示の例では、上面２２と側面２４と底面２６を有
する正八角柱の上面２２に正八角錐の凹部を形成したも
のとして構成されている。FIG. 8 shows details of an example of the omnidirectional prism 20. The omnidirectional prism 20 may be configured, for example, by forming a pyramidal recess on the upper surface of a prism that is made of a light-transmissive resin. In the illustrated example, the upper surface 22 is a regular octagonal prism having an upper surface 22, side surfaces 24, and a bottom surface 26. Is formed as a regular octagonal pyramid recess.
【０００６】八角錐の錐面２８は反射面３０を構成して
おり、図８Ｂに示す如く八角錐の頂角θは９０度をなし
ている。The pyramidal surface 28 of the octagonal pyramid constitutes the reflecting surface 30, and the apex angle θ of the octagonal pyramid is 90 degrees as shown in FIG. 8B.
【０００７】図９は全方向受光装置に入射した光線の経
路を示しており、全方向プリズム２０の側面２４に入射
された光線は反射面３０にて反射され、受光部１０装着
された受光面１２に到る。FIG. 9 shows the paths of light rays incident on the omnidirectional light receiving device. The light rays incident on the side surface 24 of the omnidirectional prism 20 are reflected by the reflecting surface 30 and are attached to the light receiving portion 10. Twelve.
【０００８】図１０は本発明者が提案している全方向受
光装置の例を示しており、この例は、図７に示す従来例
の全方向受光装置と比較して、屋根板４０が装着されて
いる点が異なり受光部１０と全方向プリズム２０とは同
一のものが使用されてよい。FIG. 10 shows an example of the omnidirectional light receiving device proposed by the present inventor. In this example, the roof plate 40 is mounted as compared with the conventional omnidirectional light receiving device shown in FIG. However, the light receiving unit 10 and the omnidirectional prism 20 may be the same.
【０００９】図１１は全方向受光装置の他の例を示して
おり、この例では、全方向プリズム２０は、円柱の上面
に頂角が９０度の円錐体の凹部を形成したものとして構
成されている。全方向プリズム２０の凹部の錐面２８は
全方向プリズム２０の側面２４に入射された光線に対す
る反射面３０を構成している。FIG. 11 shows another example of the omnidirectional light receiving device. In this example, the omnidirectional prism 20 is formed by forming a conical concave portion having an apex angle of 90 degrees on the upper surface of a cylinder. ing. The conical surface 28 of the concave portion of the omnidirectional prism 20 constitutes a reflecting surface 30 for a light ray incident on the side surface 24 of the omnidirectional prism 20.
【００１０】図１２は図１０の例と同様、本発明者が提
案している全方向受光装置の例を示しており、図１１の
全方向受光装置に屋根板４０を装着したものとして構成
されている。Similar to the example of FIG. 10, FIG. 12 shows an example of the omnidirectional light receiving device proposed by the present inventor, which is constructed by attaching the roof plate 40 to the omnidirectional light receiving device of FIG. ing.
【００１１】全方向受光装置はワイヤレスリモコン装置
の赤外線受光装置として使用されてよく、太陽光線又は
照明装置の照明光の如き外光を遮断して赤外線発生装置
からの信号光線のみを受け入れるように構成されること
が望ましい。The omnidirectional light receiving device may be used as an infrared light receiving device of a wireless remote control device, and is configured to block external light such as sunlight or illumination light of a lighting device and receive only a signal beam from the infrared generating device. It is desirable to be done.
【００１２】全方向受光装置は上方からの太陽光線３４
の入射を排除し側方からの信号光線３２のみを受け入れ
るように、全方向プリズム２０の凹部の内面を形成する
錐面２８に銀色の被膜を装着してよい。The omnidirectional light receiving device is provided with a sunbeam 34 from above.
A silver coating may be attached to the conical surface 28 forming the inner surface of the concave portion of the omnidirectional prism 20 so as to exclude the incident light and to receive only the signal light beam 32 from the side.
【００１３】錐形の凹部の錐面２８に被膜を装着するこ
とによって上方からの太陽光線の入射は排除され、赤外
線は全方向プリズム２０の側面２４のみから受け入れら
れることができる。By mounting a coating on the conical surface 28 of the conical recess, sunlight rays from above are excluded, and infrared rays can be received only from the side surface 24 of the omnidirectional prism 20.
【００１４】図１０及び図１２に示す本発明者が提案し
ている全方向受光装置は、全方向プリズム２０の上面２
２に装着された屋根板４０を有しており、屋根板４０は
全方向プリズム２０の径即ち上面２２より大きな寸法を
有するためその周縁に鍔部４２が形成され、この鍔部４
２が屋根の廂の如く上方からの外光を遮断する。従っ
て、斯かる全方向受光装置を有するワイヤレスリモコン
装置は屋外で使用するのに適している。The omnidirectional light receiving device proposed by the inventor shown in FIGS. 10 and 12 is the upper surface 2 of the omnidirectional prism 20.
2 has a roof plate 40 attached to it, and since the roof plate 40 has a diameter larger than that of the omnidirectional prism 20, that is, a size larger than the upper surface 22, a flange portion 42 is formed on the periphery thereof.
2 blocks the outside light from above like the roof of the roof. Therefore, the wireless remote control device having such an omnidirectional light receiving device is suitable for outdoor use.
【００１５】[0015]
【発明が解決しようとする課題】しかしながら、受光部
１０の上面に装着された受光面１２は全方向プリズム２
０の径即ち底面２６より小さな寸法を有する。従って、
図９に示す如く、全方向プリズム２０の側面２４より入
射された信号光線３２Ａ、３２Ｂのうちの一部の光線３
２Ｂは反射面３０にて反射されたのち受光面１２の外側
に到達し、全方向プリズム２０の側面２４より入射され
た信号光線３２Ａ、３２Ｂの全てが受光面１２上に到達
するわけではない。However, the light-receiving surface 12 mounted on the upper surface of the light-receiving portion 10 has the omnidirectional prism 2
It has a diameter of 0, ie, a dimension smaller than the bottom surface 26. Therefore,
As shown in FIG. 9, a part of the light rays 3 of the signal light rays 32A and 32B incident from the side surface 24 of the omnidirectional prism 20.
2B reaches the outside of the light receiving surface 12 after being reflected by the reflecting surface 30, and not all the signal light beams 32A and 32B incident from the side surface 24 of the omnidirectional prism 20 reach the light receiving surface 12.
【００１６】本発明は、斯かる点に鑑み、全方向受光装
置において、全方向プリズム２０の側面２４より入射さ
れた信号光線が効率的に受光面１２によって受光され、
それによってワイヤレスリモコン信号の到達距離を増大
させワイヤレスリモコン装置の操作可能範囲を増大させ
ることを目的とする。In view of the above, the present invention is directed to an omnidirectional light receiving device in which a signal light beam incident from the side surface 24 of the omnidirectional prism 20 is efficiently received by the light receiving surface 12.
The purpose of this is to increase the reach of the wireless remote control signal and to increase the operable range of the wireless remote control device.
【００１７】[0017]
【課題を解決するための手段】本発明によると、柱体の
上面２２に逆錐体状の凹部を有し錐体の錐面２８が柱体
の側面２４より入射した光線に対する反射面３０を構成
する全方向プリズム２０と、全方向プリズム２０の下端
部２６に装着された受光素子とを有する全方向受光装置
８において、全方向プリズム２０の凹部の錐体の頂角θ
が９０度より大きく構成されている。According to the present invention, the upper surface 22 of the columnar body has an inverted cone-shaped concave portion, and the conical surface 28 of the pyramid has a reflecting surface 30 for a light ray incident from the side surface 24 of the columnar body. In the omnidirectional light receiving device 8 having the omnidirectional prism 20 and the light receiving element mounted on the lower end portion 26 of the omnidirectional prism 20, the apex angle θ of the cone of the concave portion of the omnidirectional prism 20.
Is larger than 90 degrees.
【００１８】本発明の全方向受光装置８において、全方
向プリズムの凹部の錐体の頂角は実質的に１０４度に構
成されている。In the omnidirectional light receiving device 8 of the present invention, the apex angle of the cone of the concave portion of the omnidirectional prism is substantially 104 degrees.
【００１９】[0019]
【作用】本発明による全方向受光装置８の全方向プリズ
ム２０は、柱体の上面２２に逆錐体状の凹部を有し、反
射面３０を構成する凹部の錐体の頂角は９０度より大き
く構成されている。The omnidirectional prism 20 of the omnidirectional light receiving device 8 according to the present invention has an inverted cone-shaped recess on the upper surface 22 of the column, and the apex angle of the cone of the recess forming the reflecting surface 30 is 90 degrees. It is made larger.
【００２０】全方向プリズム２０の側面２４より入射さ
れた信号光線は斯かる反射面３０に反射して受光面１２
によって受光されるように構成されているため、信号光
線を効率よく受光することができる。The signal beam incident from the side surface 24 of the omnidirectional prism 20 is reflected by the reflecting surface 30 and is received by the light receiving surface 12.
Since it is configured to be received by, the signal light beam can be efficiently received.
【００２１】全方向プリズム２０の側面２４方向からの
信号光線を効率良く受光することができるため、リモコ
ン信号の到達距離が増大する。Since the signal beam from the side surface 24 of the omnidirectional prism 20 can be efficiently received, the reach distance of the remote control signal is increased.
【００２２】[0022]
【実施例】以下図１〜図６を参照して本発明の実施例に
ついて詳細に説明する。尚、図１〜図６に於いて、図７
〜図１２の対応する部分には同一の参照符号を付してそ
の詳細な説明は省略する。Embodiments of the present invention will be described in detail below with reference to FIGS. In addition, in FIGS.
~ Corresponding parts in FIG. 12 are designated by the same reference numerals, and detailed description thereof will be omitted.
【００２３】図１は本例の全方向受光装置の例を示して
おり、全方向受光装置は受光部１０と該受光部１０の上
面に装着された全方向プリズム２０とを有する。FIG. 1 shows an example of the omnidirectional light receiving device of the present embodiment. The omnidirectional light receiving device has a light receiving portion 10 and an omnidirectional prism 20 mounted on the upper surface of the light receiving portion 10.
【００２４】全方向プリズム２０の上面２２に形成され
た正八角錐形の凹部の頂角θは９０度より大きく、好ま
しくは１０４度である。斯かる頂角θは全方向プリズム
２０の径Ｄ、受光面１２の径φ及び反射面３０から受光
面１２までの距離Ｈによって定められる。The apex angle θ of the regular octagonal pyramidal recess formed on the upper surface 22 of the omnidirectional prism 20 is larger than 90 degrees, preferably 104 degrees. The apex angle θ is determined by the diameter D of the omnidirectional prism 20, the diameter φ of the light receiving surface 12, and the distance H from the reflecting surface 30 to the light receiving surface 12.
【００２５】本例の全方向受光装置は、図７〜図１２に
示す全方向受光装置と比較して、全方向プリズム２０の
上面２２に形成された錐形の凹部の頂角が９０度より大
きい点が異なり受光部１０は同一のものが使用されてよ
い。好ましくは、図１０又は図１２に示す如く屋根板４
０を装着したものが使用される。In the omnidirectional light receiving device of this example, the apex angle of the conical concave portion formed on the upper surface 22 of the omnidirectional prism 20 is 90 degrees as compared with the omnidirectional light receiving device shown in FIGS. The same thing may be used for the light receiving part 10 except a big point. Preferably, the roof plate 4 as shown in FIG. 10 or FIG.
The one with 0 attached is used.
【００２６】図２〜図３に、全方向プリズム２０の上面
２２に形成された正八角錐形の凹部の頂角を９０度より
大きくすることによって信号光線が受光面１２に効率的
に受光されることを示すために本発明者が実施したシミ
ュレーションの結果を示す。柱体の径Ｄが１１ミリメー
トルの全方向プリズム２０と径φが５ミリメートルの受
光面１２を有する受光部１０とからなる全方向受光装置
に入射した光線の経路についてシミュレーションを実施
した。2 to 3, the signal beam is efficiently received by the light receiving surface 12 by making the apex angle of the regular octagonal pyramidal recess formed on the upper surface 22 of the omnidirectional prism 20 larger than 90 degrees. The result of the simulation performed by the present inventor is shown to show that. A simulation was carried out on the path of a light beam incident on an omnidirectional light receiving device including an omnidirectional prism 20 having a columnar diameter D of 11 mm and a light receiving unit 10 having a light receiving surface 12 having a diameter φ of 5 mm.
【００２７】図２は正八角錐形の凹部の頂角θが１０４
度、反射面３０から受光面１２までの距離Ｈ（正八角錐
形の凹部の頂点から受光面１２までの距離Ｈ）が６ミリ
メートルの場合、図３Ａは正八角錐形の凹部の頂角θが
１０３度、反射面３０から受光面１２までの距離Ｈ（正
八角錐形の凹部の頂点から受光面１２までの距離Ｈ）が
７ミリメートルの場合、図３Ｂは正八角錐形の凹部の頂
角θが１０６度、反射面３０から受光面１２までの距離
Ｈ（正八角錐形の凹部の頂点から受光面１２までの距離
Ｈ）が５ミリメートルの場合、について光線の経路をシ
ミュレーションしたものである。In FIG. 2, the apex angle θ of the regular octagonal pyramidal recess is 104.
If the distance H from the reflecting surface 30 to the light receiving surface 12 (the distance H from the apex of the regular octagonal pyramidal recess to the light receiving surface 12) is 6 mm, FIG. 3A shows that the apex angle θ of the regular octagonal pyramidal recess is 103. 3B, when the distance H from the reflecting surface 30 to the light receiving surface 12 (the distance H from the apex of the regular octagonal pyramidal recess to the light receiving surface 12) is 7 mm, the apex angle θ of the regular octagonal pyramidal recess is 106. In the case where the distance H from the reflecting surface 30 to the light receiving surface 12 (the distance H from the apex of the regular octagonal pyramidal recess to the light receiving surface 12) is 5 mm, the path of the light beam is simulated.
【００２８】各図において、全方向プリズム２０の左の
側面２４より水平方向に入射し反射面３０の上端部と下
端部にて反射した光線の経路と、右の側面２４より水平
方向に対して上方より＋３０度、＋２０度、＋１０度、
０度、下方より−１０度、−２０度、−３０度に傾斜し
た方向に入射し反射面３０の上端部と下端部にて反射し
た光線の経路と、が示されている。In each of the drawings, the paths of light rays that are incident horizontally from the left side surface 24 of the omnidirectional prism 20 and reflected at the upper and lower ends of the reflecting surface 30 and from the right side surface 24 with respect to the horizontal direction. From above +30 degrees, +20 degrees, +10 degrees,
The paths of light rays that are incident in the directions inclined at 0 degree, −10 degrees, −20 degrees, and −30 degrees from below and reflected at the upper end portion and the lower end portion of the reflecting surface 30 are shown.
【００２９】図２〜図３を比較して明らかなように、図
２に示す如く正八角錐形の凹部の頂角θが１０４度の場
合に最も効率的に光線が受光面１２に集光されることが
できる。As is apparent from a comparison of FIGS. 2 and 3, when the apex angle θ of the regular octagonal pyramidal recess is 104 degrees as shown in FIG. You can
【００３０】次に、全方向プリズム２０の正八角錐形の
凹部の頂角θを９０度より大きくすることによってリモ
コン信号の到達距離が増大することを示すために本発明
者が実施した実験方法及び実験結果を示す。Next, an experimental method carried out by the present inventor to show that the reaching distance of the remote control signal is increased by increasing the apex angle θ of the regular octagonal pyramidal recess of the omnidirectional prism 20 to be larger than 90 degrees. The experimental results are shown.
【００３１】図４は実験方法の概略を示す図であり、全
方向受光装置８はワイヤレスリモコンの赤外線受光装置
としてカメラ一体型ビデオテープレコーダ５０に装着さ
れている。全方向受光装置８は、使用者Ｍによって操作
される赤外線発生装置５２からの入力信号である赤外線
３２を受け入れることができるように、好ましくは全方
向プリズム２０の側面２４が垂直に配置されるようにカ
メラ一体型ビデオテープレコーダ５０の上側部に装着さ
れてよい。FIG. 4 is a diagram showing the outline of the experimental method. The omnidirectional light-receiving device 8 is mounted on the camera-integrated video tape recorder 50 as an infrared light-receiving device of a wireless remote controller. The omnidirectional light receiving device 8 is preferably arranged such that the side surface 24 of the omnidirectional prism 20 is vertically arranged so as to receive the infrared ray 32 which is an input signal from the infrared ray generating device 52 operated by the user M. It may be mounted on the upper portion of the camera-integrated video tape recorder 50.
【００３２】図５は実験に使用した全方向受光装置８を
示しており、全方向プリズム２０の上面２２には該全方
向プリズム２０の断面形と同一形状且つ同一寸法の屋根
板４０が装着されている。FIG. 5 shows the omnidirectional light receiving device 8 used in the experiment, in which the roof 22 having the same shape and size as the sectional shape of the omnidirectional prism 20 is mounted on the upper surface 22 of the omnidirectional prism 20. ing.
【００３３】斯かる全方向受光装置８と図４に示す装置
を使用し、赤外線３２の入射方向及び入射角度を変化さ
せてリモコン信号である赤外線３２の到達距離（メート
ル）を測定した。The omnidirectional light receiving device 8 and the device shown in FIG. 4 were used to change the incident direction and the incident angle of the infrared rays 32 and measure the reaching distance (meters) of the infrared rays 32 as the remote control signal.
【００３４】図６は、本実験で使用した全方向受光装置
８の詳細と全方向プリズム２０に対するリモコン信号即
ち赤外線３２の入射方向及び入射角度を示す。以下に、
赤外線３２の入射方向は、図６Ａに示す如く、同一水平
面内で、全方向プリズム２０の側面２４に垂直な方向に
対して左右方向に傾斜された角度αを意味し、赤外線３
２の入射角度は、図６Ｂに示す如く、同一垂直面内で、
水平方向に対して上下方向に傾斜された角度βを意味す
るものとする。FIG. 6 shows the details of the omnidirectional light receiving device 8 used in this experiment and the incident direction and incident angle of the remote control signal, that is, the infrared rays 32, to the omnidirectional prism 20. less than,
As shown in FIG. 6A, the incident direction of the infrared ray 32 means an angle α inclined in the left-right direction with respect to the direction perpendicular to the side surface 24 of the omnidirectional prism 20 in the same horizontal plane.
The incident angle of 2 is, as shown in FIG. 6B, in the same vertical plane,
It means an angle β inclined vertically with respect to the horizontal direction.
【００３５】図６Ａに示す如く、同一水平面内に於ける
赤外線３２の入射方向は、全方向プリズム２０の側面２
４に垂直な方向（α＝０°）の場合、斯かる方向に対し
て右側に傾斜した方向α＝３０°（Ｒ３０°）、２０°
（Ｒ２０°）、１０°（Ｒ１０°）の場合、左側に傾斜
した方向α＝３０°（Ｌ３０°）、２０°（Ｌ２０
°）、１０°（Ｌ１０°）の場合、全方向プリズム２０
の側面２４と側面２４が交差する角部２４Ａの方向α＝
２２．５°（Ｒ２２．５°、Ｌ２２．５°）の場合であ
る。As shown in FIG. 6A, the incident direction of the infrared rays 32 in the same horizontal plane is the side surface 2 of the omnidirectional prism 20.
In the case of the direction perpendicular to 4 (α = 0 °), the direction inclined to the right with respect to the direction α = 30 ° (R30 °), 20 °
In the case of (R20 °) and 10 ° (R10 °), the direction inclined to the left side α = 30 ° (L30 °), 20 ° (L20)
In case of 10 ° (L10 °), the omnidirectional prism 20
Direction of the corner portion 24A where the side face 24 and the side face 24 intersect α =
This is the case of 22.5 ° (R22.5 °, L22.5 °).
【００３６】図６Ｂに示す如く、同一垂直面内に於ける
赤外線３２の入射角度は、水平方向β＝０°の場合、水
平方向に対して上方に傾斜したβ＝＋３０°、＋２０
°、＋１０°の場合、水平方向に対して下方に傾斜した
β＝−３０°、−２０°、−１０°の場合、である。As shown in FIG. 6B, when the incident angle of the infrared rays 32 in the same vertical plane is β = 0 ° in the horizontal direction, β = + 30 °, +20 inclined upward with respect to the horizontal direction.
In the case of ° and + 10 °, β = -30 °, −20 °, and −10 ° inclined downward with respect to the horizontal direction.
【００３７】全方向プリズム２０は正八角柱の上面に頂
角が１０４度の正八角錐の凹部を形成したものと、頂角
が９０度の正八角錐の凹部を形成したものと、の二つを
用意した。いずれも正八角柱の径Ｄは１１ミリメートル
である。受光部１０に装着された受光面１２の径φは５
ミリメートルである。The omnidirectional prism 20 is prepared as a regular octagonal prism having a regular octagonal pyramid recess having an apex angle of 104 degrees and a regular octagonal pyramid recess having an apex angle of 90 degrees. did. In each case, the diameter D of the regular octagonal prism is 11 mm. The diameter φ of the light receiving surface 12 mounted on the light receiving unit 10 is 5
In millimeters.
【００３８】実験は屋外と屋内とで行い、ビデオテープ
レコーダ５０の背後に配置された赤外線発生装置５２に
よって赤外線３２を全方向受光装置８に照射した。とく
に屋外実験ではリモコン信号の到達距離に対して外乱で
ある太陽Ｓからの赤外線３４の影響を調べるために、図
４Ａに示す如き順光の場合と図４Ｂに示す如く逆光の場
合について実験を実施した。The experiment was conducted outdoors and indoors, and the omnidirectional light receiving device 8 was irradiated with infrared rays 32 by the infrared ray generating device 52 arranged behind the video tape recorder 50. In particular, in an outdoor experiment, in order to investigate the influence of the infrared rays 34 from the sun S, which is a disturbance, on the reaching distance of the remote control signal, an experiment was performed in the case of forward light as shown in FIG. 4A and in the case of backlight as shown in FIG. 4B. did.
【００３９】以下表１〜表４に実験結果を示す。尚、各
実験の条件は次の通りであり、結果の数値は赤外線を使
用したリモコン信号の到達距離（メートル）を示す。Experimental results are shown in Tables 1 to 4 below. The conditions of each experiment are as follows, and the numerical value of the result indicates the reach distance (meter) of the remote control signal using infrared rays.
【００４０】表１：同一垂直面内で、赤外線３２の入射
角度を上下方向にβ＝＋３０°〜−３０°の範囲で変化
させた。屋内で実験、屋根板４０は全方向プリズム２０
の断面と同一形状且つ同一寸法のものを使用した。赤外
線３２の入射方向は、全方向プリズム２０の側面２４に
垂直な方向（α＝０°）と角部２４Ａ方向（α＝２２．
５°）の２方向。Table 1: In the same vertical plane, the incident angle of the infrared rays 32 was changed vertically in the range of β = + 30 ° to −30 °. Experiment indoors, roof plate 40 is omnidirectional prism 20
The same shape and size as the cross section of The incident direction of the infrared rays 32 is the direction (α = 0 °) perpendicular to the side surface 24 of the omnidirectional prism 20 and the direction of the corner portion 24A (α = 22.
5 °) in 2 directions.
【００４１】表２：同一垂直面内で、赤外線３２の入射
角度を上下方向にβ＝＋３０°〜−３０°の範囲で変化
させた。屋外で実験、外光は順光（Ｎ）及び逆光
（Ｒ）、屋根板４０は全方向プリズム２０の断面と同一
形状且つ同一寸法のものを使用した。赤外線３２の入射
方向は、全方向プリズム２０の側面２４に垂直な方向
（α＝０°）だけである。Table 2: In the same vertical plane, the incident angle of the infrared rays 32 was changed vertically in the range of β = + 30 ° to −30 °. Experiments were conducted outdoors, and ambient light was normal light (N) and backlight (R), and the roof plate 40 had the same shape and the same size as the cross section of the omnidirectional prism 20. The incident direction of the infrared rays 32 is only the direction (α = 0 °) perpendicular to the side surface 24 of the omnidirectional prism 20.
【００４２】表３：同一水平面内で、赤外線３２の入射
方向を左右方向にα＝＋３０°〜−３０°の範囲で変化
させた。屋内で実験、屋根板４０は全方向プリズム２０
の断面と同一形状且つ同一寸法のものを使用した。赤外
線３２の入射角度は水平方向（β＝０°）だけ。Table 3: In the same horizontal plane, the incident direction of the infrared rays 32 was changed in the lateral direction in the range of α = + 30 ° to -30 °. Experiment indoors, roof plate 40 is omnidirectional prism 20
The same shape and size as the cross section of The incident angle of the infrared ray 32 is only in the horizontal direction (β = 0 °).
【００４３】表４：同一水平面内で、赤外線３２の入射
方向を左右方向にα＝Ｌ２２．５°〜Ｒ２２．５°の範
囲で変化させた。屋外で実験、外光は順光（Ｎ）及び逆
光（Ｒ）、屋根板４０は全方向プリズム２０の断面と同
一形状且つ同一寸法のものを使用した。赤外線３２の入
射角度は水平方向（β＝０°）だけ。Table 4: In the same horizontal plane, the incident direction of the infrared rays 32 was changed in the lateral direction in the range of α = L22.5 ° to R22.5 °. Experiments were conducted outdoors, and ambient light was normal light (N) and backlight (R), and the roof plate 40 had the same shape and the same size as the cross section of the omnidirectional prism 20. The incident angle of the infrared ray 32 is only in the horizontal direction (β = 0 °).
【００４４】[0044]
【表１】 [Table 1]
【００４５】[0045]
【表２】 [Table 2]
【００４６】[0046]
【表３】 [Table 3]
【００４７】[0047]
【表４】 [Table 4]
【００４８】次に、図７に示す如き、頂角θが９０度で
ある正八角錐の凹部を有する全方向プリズム２０を含む
従来例の全方向受光装置を使用した実験の方法及び結果
を示す。Next, as shown in FIG. 7, an experimental method and results using an omnidirectional light receiving device of a conventional example including an omnidirectional prism 20 having a regular octagonal pyramid recess having an apex angle θ of 90 degrees will be described.
【００４９】屋内で実験をした。屋根板４０は全方向プ
リズム２０の断面と同一形状且つ同一寸法のものを使用
した。赤外線３２の入射方向は、同一水平面内で、全方
向プリズム２０の側面２４に垂直な方向（α＝０°）と
角部２４Ａ方向（α＝２２．５°）の２方向である。Experiments were conducted indoors. The roof plate 40 has the same shape and size as the cross section of the omnidirectional prism 20. The incident directions of the infrared rays 32 are two directions in the same horizontal plane, that is, a direction perpendicular to the side surface 24 of the omnidirectional prism 20 (α = 0 °) and a corner portion 24A direction (α = 22.5 °).
【００５０】赤外線３２の入射方向が全方向プリズム２
０の側面２４に垂直な方向（α＝０°）の場合には赤外
線の到達距離は６．５メートル、赤外線３２の入射方向
が全方向プリズム２０の角部２４Ａ方向（α＝２２．５
°）の場合には赤外線の到達距離は５．５メートル、で
あった。The incident direction of the infrared ray 32 is the omnidirectional prism 2
In the case of the direction perpendicular to the side surface 24 of 0 (α = 0 °), the reach distance of the infrared rays is 6.5 meters, and the incident direction of the infrared rays 32 is the direction of the corner portion 24A of the omnidirectional prism 20 (α = 22.5).
In the case of (°), the reach distance of infrared rays was 5.5 meters.
【００５１】以上の実験結果より、全方向プリズム２０
の上面２２に形成した正八角錐の凹部の頂角を９０度よ
り大きくすることによってワイヤレスリモコン信号の到
達距離を増加させることができることがわかる。特に斯
かる正八角錐の凹部の頂角θを１０４度とすることによ
って、ワイヤレスリモコン信号の到着距離が増加させる
ことができる。From the above experimental results, the omnidirectional prism 20
It can be seen that the reaching distance of the wireless remote control signal can be increased by making the apex angle of the regular octagonal pyramid concave portion formed on the upper surface 22 of 90 degrees larger than 90 degrees. In particular, the arrival angle of the wireless remote control signal can be increased by setting the apex angle θ of the regular octagonal pyramid recess to 104 degrees.
【００５２】以上本発明の実施例について詳細に説明し
てきたが、本発明は上述の実施例に限ることなく、本発
明の要旨を逸脱することなく他の種々の構成が採り得る
ことは当業者にとって容易に理解されよう。Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various other configurations can be adopted without departing from the gist of the present invention. Easily understood by
【００５３】[0053]
【発明の効果】本発明に依ると、全方向受光装置８に入
射された信号光線が効率的に受光素子に集光されること
ができる。従って、赤外線発生装置５２と赤外線受光装
置とを有するワイヤレスリモコン装置に於いて、リモコ
ン信号の到達距離を増加させることができる利点があ
る。According to the present invention, the signal beam incident on the omnidirectional light receiving device 8 can be efficiently focused on the light receiving element. Therefore, in the wireless remote controller having the infrared generator 52 and the infrared receiver, there is an advantage that the reach distance of the remote controller signal can be increased.
【００５４】特に、ワイヤレスリモコン装置を屋外で使
用する場合にリモコン信号の到達距離を増加させること
ができ、操作範囲が増大する利点がある。In particular, when the wireless remote control device is used outdoors, the reach of the remote control signal can be increased, which has the advantage of increasing the operating range.
【図１】本発明の全方向受光装置を示す図である。FIG. 1 is a diagram showing an omnidirectional light receiving device of the present invention.
【図２】全方向受光装置に入射される光線の経路示す説
明図である。FIG. 2 is an explanatory diagram showing paths of light rays incident on an omnidirectional light receiving device.
【図３】全方向受光装置に入射される光線の経路示す説
明図である。FIG. 3 is an explanatory diagram showing paths of light rays incident on an omnidirectional light receiving device.
【図４】本願発明者が実施した実験方法を示す説明図で
ある。FIG. 4 is an explanatory diagram showing an experimental method carried out by the inventor of the present application.
【図５】本願発明者が実施した実験に使用した全方向受
光装置を示す説明図である。FIG. 5 is an explanatory diagram showing an omnidirectional light receiving device used in an experiment conducted by the inventor of the present application.
【図６】本願発明者が実施した実験方法を示す説明図で
ある。FIG. 6 is an explanatory diagram showing an experimental method carried out by the inventor of the present application.
【図７】従来例の全方向受光装置の概観図である。FIG. 7 is a schematic view of a conventional omnidirectional light receiving device.
【図８】従来例の全方向プリズムの詳細図である。FIG. 8 is a detailed view of a conventional omnidirectional prism.
【図９】従来例の全方向受光装置の断面とそれに入射し
た光線の経路を示す図である。FIG. 9 is a diagram showing a cross section of a conventional omnidirectional light receiving device and paths of light rays incident on the light receiving device.
【図１０】全方向受光装置の他の例を示す概観図であ
る。FIG. 10 is a schematic view showing another example of the omnidirectional light receiving device.
【図１１】全方向受光装置の他の例を示す概観図であ
る。FIG. 11 is a schematic view showing another example of the omnidirectional light receiving device.
【図１２】全方向受光装置の他の例を示す概観図であ
る。FIG. 12 is a schematic view showing another example of the omnidirectional light receiving device.
８ 全方向受光装置 １０ 受光部 １２ 受光面 ２０ 全方向プリズム ２２ 上面 ２４ 側面 ２４Ａ 角部 ２６ 底面 ２８ 錐面 ３０ 反射面 ３２ 赤外線（信号光線） ３４ 赤外線（外光） ４０ 屋根板 ４２ 鍔部 ５０ ビデオテープレコーダ ５２ 赤外線発生装置 8 omnidirectional light receiving device 10 light receiving part 12 light receiving surface 20 omnidirectional prism 22 upper surface 24 side surface 24A corner part 26 bottom surface 28 cone surface 30 reflecting surface 32 infrared ray (signal light) 34 infrared ray (outside light) 40 roof plate 42 collar portion 50 video Tape recorder 52 Infrared generator
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野田 康 東京都品川区北品川６丁目７番35号 ソニ ー株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasushi Noda 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation
Claims (2)
体の錐面が上記柱体の側面より入射した光線に対する反
射面を構成するプリズムと、該プリズムの下端部に装着
された受光素子とを有する全方向受光装置にして、上記
プリズムの凹部の錐体の頂角が９０度より大きいことを
特徴とする全方向受光装置。1. A prism having an inverted cone-shaped concave portion on the upper surface of a pillar, the conical surface of which constitutes a reflecting surface for a light ray incident from the side surface of the pillar, and a prism at the lower end of the prism. An omnidirectional light receiving device having an attached light receiving element, wherein the apex angle of the cone of the concave portion of the prism is larger than 90 degrees.
プリズムの凹部の錐体の頂角は実質的に１０４度である
ことを特徴とする全方向受光装置。2. The omnidirectional light receiving device according to claim 1, wherein the cone of the concave portion of the prism has an apex angle of substantially 104 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3341374A JPH05175911A (en) | 1991-12-24 | 1991-12-24 | Omnidirectional light receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3341374A JPH05175911A (en) | 1991-12-24 | 1991-12-24 | Omnidirectional light receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05175911A true JPH05175911A (en) | 1993-07-13 |
Family
ID=18345571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3341374A Pending JPH05175911A (en) | 1991-12-24 | 1991-12-24 | Omnidirectional light receiving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05175911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100367A1 (en) * | 2002-05-08 | 2003-12-04 | Konami Corporation | Model-use light receiving device, model, and model-use signal light detection method |
| US7706698B2 (en) | 2004-12-21 | 2010-04-27 | Sony Corporation | Remote control system and receiver |
-
1991
- 1991-12-24 JP JP3341374A patent/JPH05175911A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100367A1 (en) * | 2002-05-08 | 2003-12-04 | Konami Corporation | Model-use light receiving device, model, and model-use signal light detection method |
| US7276702B2 (en) | 2002-05-08 | 2007-10-02 | Konami Corporation | Light receiving device for model, model, and signal light detecting method for model |
| US7706698B2 (en) | 2004-12-21 | 2010-04-27 | Sony Corporation | Remote control system and receiver |
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