JPH05312951A - Ranging optical system - Google Patents
Ranging optical systemInfo
- Publication number
- JPH05312951A JPH05312951A JP2412045A JP41204590A JPH05312951A JP H05312951 A JPH05312951 A JP H05312951A JP 2412045 A JP2412045 A JP 2412045A JP 41204590 A JP41204590 A JP 41204590A JP H05312951 A JPH05312951 A JP H05312951A
- Authority
- JP
- Japan
- Prior art keywords
- light
- distance measuring
- optical system
- optical path
- ranging
- 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
Links
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
- Measurement Of Optical Distance (AREA)
- Optical Couplings Of Light Guides (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
【０００１】本発明は、光波距離計における測距光学系
に関する。The present invention relates to a distance measuring optical system in a light wave range finder.
【０００２】[0002]
【従来の技術】測距光学系は、一般には、電気信号を発
光素子により光変換された光源から発光された光が送光
光学系を通って送光され、測定点の反射プリズムに反射
されて戻ってきて、受光光学系を通して受光部に入射
し、受光素子により光変換されて電気信号となり、この
信号の位相差を距離に変換する測距光路を具備すると共
に、これに対して、光源から本体内部に光学部材または
ファイバー等により導入され直接受光部に入る基準光路
を具備し、その基準光路内での距離情報が温度等により
変化すれば補正して正しい距離として表示させる構成を
具備している。2. Description of the Related Art Generally, in a distance measuring optical system, light emitted from a light source in which an electric signal is optically converted by a light emitting element is sent through a light sending optical system and is reflected by a reflecting prism at a measuring point. Then, the light is received by the light receiving optical system, enters the light receiving portion, is optically converted by the light receiving element into an electric signal, and is provided with a distance measuring optical path for converting the phase difference of this signal into a distance. It is equipped with a reference optical path that is introduced into the main body from inside by an optical member or fiber and directly enters the light receiving part, and if the distance information in the reference optical path changes due to temperature etc., it is corrected and displayed as a correct distance. ing.
【０００３】即ち、図４において、光源３から発光され
た光は、分離プリズム２により反射され、望遠鏡光学系
の対物レンズ１により測距光路１０（送光側）を通って
測定点の反射プリズムに向かい、反射された光は測距光
路（受光側）１０’を通って分離プリズム２で反射さ
れ、受光部６に入射するのに対して、基準光は光源の外
周部から基準光路１１を通って反射ミラー１２を介して
直接受光部６に入射する。図４において、４はモータ５
により回転駆動されて、光源３から発光された光を測距
光と基準光に切り換える測距光・基準光の切り換えシャ
ッター、８はモータ９により駆動される光量調整用ＮＤ
フィルター、７は干渉フィルターである。That is, in FIG. 4, the light emitted from the light source 3 is reflected by the separating prism 2 and passes through the distance measuring optical path 10 (light transmitting side) by the objective lens 1 of the telescope optical system to form a reflecting prism at the measuring point. The reflected light travels through the distance measuring optical path (light receiving side) 10 ′ and is reflected by the separating prism 2 and enters the light receiving portion 6, whereas the reference light travels from the outer peripheral portion of the light source to the reference optical path 11. It directly enters the light receiving portion 6 through the reflection mirror 12. In FIG. 4, 4 is a motor 5
The shutter for rotating the distance measuring light and the reference light, which is driven to rotate by the light source 3 and switches the light emitted from the light source 3 to the distance measuring light and the reference light, and 8 is a light amount adjusting ND driven by the motor 9.
A filter, 7 is an interference filter.
【０００４】また、前記測距光学系の光源は、一般にビ
ームの広がりを持っていて、その中心部を測距光路に使
い、周辺部を基準光路に使っている。The light source of the distance measuring optical system generally has a beam divergence, and its central portion is used as a distance measuring optical path and its peripheral portion is used as a reference optical path.
【０００５】[0005]
【発明が解決しようとする問題点】上記の通り、従来の
測距光学系は、望遠鏡光学系内に、測距機能に必要な測
距光・基準光切り替え用シャッター、光量調整用ＮＤフ
ィルター等の部材が一体的に入り込んだ機構上複雑な構
造になっていたため、製造及び修理等が面倒になる問題
があった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, the conventional range-finding optical system includes a range-finding / reference-light switching shutter, a light amount adjusting ND filter, etc., which are necessary for the range-finding function, in the telescope optical system. Since the member has a complicated structure in which it is integrally incorporated, there is a problem that manufacturing and repairing are troublesome.
【０００６】また、受光光量調整用ＮＤフィルター等の
フィルター部材が、測距光学系によっては、図４の測距
光路と基準光路の受光側に同時に介在する構成の他に、
測距光路の送光側、受光側、及び基準光路側に個々それ
ぞれに介在する複雑な構成のものがある。Depending on the distance measuring optical system, a filter member such as an ND filter for adjusting the amount of received light may be provided on the light receiving side of the distance measuring optical path and the reference optical path at the same time, depending on the distance measuring optical system.
There is a complicated structure in which the distance measuring optical path includes a light transmitting side, a light receiving side, and a reference optical path side.
【０００７】また、上記の通り、従来の測距光学系は、
光源のビームは広がりを持っており、その中心部を測距
光として使用し、周辺部を基準光として使用していたた
め、図３に示すように、中心部の測距光路部分に対し
て、周辺部の基準光路部分は、光源の特性として位相差
の遅れあるいは進みがあり、距離情報に誤差の含まれる
おそれがあると共に、温度等の条件で位相差の遅れまた
は進みが加わり、距離測定誤差の原因になっていた。Further, as described above, the conventional distance measuring optical system is
Since the beam of the light source has a divergence, and the central portion thereof is used as the distance measuring light and the peripheral portion thereof is used as the reference light, as shown in FIG. 3, with respect to the central distance measuring optical path portion, The reference light path in the peripheral part has a delay or lead of the phase difference as a characteristic of the light source, and the distance information may include an error. Was causing
【０００８】[0008]
【問題点を解決するための手段】そこで本発明は、光源
から発光された光をシャッターにより測距光路と基準光
路に切り替え、測距光路は望遠鏡光学系を通って、基準
光路は直接的に、それぞれ光量調整用ＮＤフィルター等
を介して受光部に入射し、光変換して電気信号とし、そ
の位相差により距離を測量する測距光学系において、前
記光源、シャッター、基準光路、フィルター、受光部等
を、望遠鏡光学系とは別体に測距ユニット内に収納し、
該ユニットに望遠鏡光学系と光学的に接続する接続端子
を設けたことを特徴とする測距光学系を提供しようとす
るものである。SUMMARY OF THE INVENTION Therefore, according to the present invention, the light emitted from a light source is switched to a distance measuring optical path and a reference optical path by a shutter, the distance measuring optical path passes through a telescope optical system, and the reference optical path is directly connected. , The light source, the shutter, the reference optical path, the filter, and the light receiving part which are incident on the light receiving part through the light amount adjusting ND filter and the like, are converted into an electric signal, and the distance is measured by the phase difference. Parts, etc. are stored in the distance measuring unit separately from the telescope optical system,
An object of the present invention is to provide a distance measuring optical system characterized in that the unit is provided with a connection terminal for optically connecting with a telescope optical system.
【０００９】また、本発明は、前記の測距光学系におい
て、光量調整用ＮＤフィルター等として、単一のフィル
ター部材を測距光路及び基準光路中に、それぞれ少なく
とも二個所に介在可能に設けたことを特徴とする測距光
学系を提供するものである。In the distance measuring optical system according to the present invention, a single filter member, such as an ND filter for adjusting the light amount, is provided in the distance measuring optical path and the reference optical path so as to be interposed at least at two positions respectively. The present invention provides a distance measuring optical system characterized by the above.
【００１０】さらに、本発明は、前記の測距光学系にお
いて、光源より発光する測距光の有効範囲内に半透過反
射部材を設け、透過光を測距光路に送光する一方、反射
光を基準光路に送光する構成を備えたことを特徴とする
測距光学系を提供するものである。Further, according to the present invention, in the above distance measuring optical system, a semi-transmissive reflecting member is provided within the effective range of the distance measuring light emitted from the light source, and the transmitted light is sent to the distance measuring optical path while the reflected light is transmitted. The present invention provides a distance measuring optical system characterized in that it has a configuration for transmitting light to a reference optical path.
【００１１】[0011]
【作用】そして本発明による測距光学系によれば、光
源、シャッター、基準光路、フィルター、受光部等を、
望遠鏡光学系とは別体に測距ユニット内に収納し、該ユ
ニットに望遠鏡光学系と光学的に接続する接続端子を設
けた構成により、測距機能に必要な測距ユニットと望遠
鏡とを別々に携帯しそれぞれを簡単に接続することによ
り、測距光学系を組み立てることができると共に、製造
及び修理も別々に行うことができる作用がある。According to the distance measuring optical system of the present invention, the light source, the shutter, the reference optical path, the filter, the light receiving portion, etc.
The telescope optical system is housed separately from the telescope optical system, and the unit has a connection terminal that optically connects to the telescope optical system. The distance measuring optical system can be assembled and carried out separately by carrying them and easily connecting them, and the manufacturing and repair can be performed separately.
【００１２】また、本発明の測距光学系によれば、前記
の測距光学系において、光量調整用ＮＤフィルター等と
して、単一のフィルター部材を測距光路及び基準光路中
に、それぞれ少なくとも二個所に介在可能に設けたか
ら、測距ユニット内のフィルター部材を単一し、構造と
作動を簡素化できる作用がある。According to the distance measuring optical system of the present invention, in the distance measuring optical system, a single filter member, such as an ND filter for adjusting the light amount, is provided in the distance measuring optical path and the reference optical path respectively. Since it is provided so as to be able to intervene at the location, there is an effect that the filter member in the distance measuring unit can be unified and the structure and operation can be simplified.
【００１３】更に、本発明による測距光学系によれば、
前記測距光学系において、光源より発光する測距光の有
効範囲内に半透過反射部材を設け、測距光と同じ光路光
からの反射光を基準光路に送光するから、光源の特性、
あるいは温度等の外的環境条件で位相差の遅れ、あるい
は進みによる距離情報への誤差の影響を少なくすること
ができる。Further, according to the distance measuring optical system of the present invention,
In the distance measuring optical system, a semi-transmissive reflecting member is provided within the effective range of the distance measuring light emitted from the light source, and the reflected light from the same optical path light as the distance measuring light is sent to the reference optical path.
Alternatively, the influence of an error on the distance information due to the delay or advance of the phase difference due to external environmental conditions such as temperature can be reduced.
【００１４】[0014]
【実施例】以下、図示する実施例に基づいて本発明の構
成を詳細に説明する。図１の実施例において、２３は測
距ユニットであり、該測距ユニット２３内において、３
は、ＩＲＥＤ（赤外線発光ダイオード），ＬＥＤ（通常
の発光ダイオード）、あるいはＬＥＤ等と接続したファ
イバー等からなる光源である。光源３からでた光源ビー
ムの光路には、前述の図３の如く、そのビーム角に広が
りを持つが、本発明は、位相誤差の含まれないビーム角
度の測距光の有効範囲内の測距光路内に、ハーフミラ
ー、ビームスップリッタープリズム等からなる半透過反
射部材１３を設け、直進する測距光路に対してほぼ直角
方向に屈折した基準光路１１を設けてある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the illustrated embodiments. In the embodiment shown in FIG. 1, reference numeral 23 is a distance measuring unit.
Is a light source including an IRED (infrared light emitting diode), an LED (ordinary light emitting diode), or a fiber connected to an LED or the like. Although the optical path of the light source beam emitted from the light source 3 has a spread in the beam angle as shown in FIG. 3, the present invention measures the beam angle within the effective range of the distance measuring light that does not include the phase error. A semi-transmissive reflecting member 13 including a half mirror and a beam splitter prism is provided in the distance optical path, and a reference optical path 11 refracted in a direction substantially perpendicular to the distance measuring optical path traveling straight is provided.
【００１５】尚、基準光路１１のため半透過反射部材１
３の占める反射部分は、測距光路の極く僅かな部分でよ
い。Incidentally, the semi-transmissive reflecting member 1 for the reference optical path 11
The reflection portion occupied by 3 may be a very small portion of the distance measuring optical path.
【００１６】４は、測距光・基準光の切り換えシャッタ
ーで、シャッター駆動用モータにより往復回転駆動又は
回転駆動する。該シャッター４は、半透過反射部材１３
の透過光（測距光）に開口する測距開口窓と、反射光
（基準光）に開口する基準開口窓とを交互に開口するよ
うに所定の回転角度位置に往復回転又は回転するように
構成してある。Reference numeral 4 denotes a distance measuring light / reference light switching shutter which is reciprocally rotated or driven by a shutter driving motor. The shutter 4 includes a semi-transmissive reflection member 13
A reciprocating rotation or rotation to a predetermined rotation angle position so as to alternately open a range-finding opening window that opens to the transmitted light (range-finding light) and a reference opening window that opens to the reflected light (reference light) Configured.
【００１７】半透過反射部材１３を透過し、前記シャッ
ター４の測距開口窓を通過した測距光は、光量調整用Ｎ
Ｄフィルター８を介してリレーレンズ１９に入射し、リ
レーレンズ１９により望遠鏡光学系２６との送光側の接
続端子部２７に集光する。接続端子部２７には、測距ユ
ニット２３とは別体に設けた望遠鏡光学系２６との接続
用ファイバー２４が、着脱自在に接続している。該ファ
イバー２４の多端は望遠鏡光学系２６の接続端子部２８
に着脱自在に接続し、測距光は望遠鏡光学系の測距光路
１０に入射するように構成してある。The distance-measuring light which has transmitted through the semi-transmissive reflecting member 13 and passed through the distance-measuring aperture window of the shutter 4 is N for adjusting the amount of light.
The light enters the relay lens 19 via the D filter 8 and is condensed by the relay lens 19 on the connection terminal portion 27 on the light transmission side with the telescope optical system 26. A fiber 24 for connection to a telescope optical system 26 provided separately from the distance measuring unit 23 is detachably connected to the connection terminal portion 27. A multi-end of the fiber 24 is connected to a connection terminal portion 28 of a telescope optical system 26.
The distance measuring light is configured to enter the distance measuring optical path 10 of the telescope optical system.
【００１８】望遠鏡光学系２６は、例えば、図２に示す
ように、図上左右が逆になるが、接続端子部２８を出た
光は、分離プリズム２によって反射し対物レンズ１に送
られ、平行ビームとなって目標の測定点の反射プリズム
に向かい、その反射光が受光側の測距光路１０’を通っ
て、対物レンズ１により分離プリズム２を経て受光側の
接続端子部２９に集光するように構成してある。接続用
端子部２９には、受光側の接続用ファイバー２５の一端
が着脱自在に接続し、その多端は測距ユニット２３の接
続端子部３０に着脱自在に接続している。In the telescope optical system 26, for example, as shown in FIG. 2, the left and right are reversed, but the light emitted from the connection terminal portion 28 is reflected by the separation prism 2 and sent to the objective lens 1. It becomes a parallel beam toward the reflecting prism at the target measuring point, and the reflected light passes through the distance measuring optical path 10 ′ on the light receiving side and is condensed by the objective lens 1 through the separating prism 2 to the connection terminal portion 29 on the light receiving side. It is configured to do. One end of the light-receiving side connecting fiber 25 is detachably connected to the connecting terminal portion 29, and the other end is detachably connected to the connecting terminal portion 30 of the distance measuring unit 23.
【００１９】戻りの測距光路１０’に沿って測距ユニッ
ト２３の接続端子３０に入射した測距光は、光量調整用
ＮＤフィルター８を介してリレーレンズ２２に入射し、
リレーレンズ２２により平行光となり、ハーフミラー、
ビームスップリッタープリズム等からなる半透過反射部
材１８を透過してリレーレンズ２１に集光されて、ＡＰ
Ｄ（特殊高感度受光ダイオード）、ＰＤ（受光ダイオー
ド）、ＰＤ等に接続するファイバー等からなる受光部６
に入射するように構成してある。The distance measuring light incident on the connection terminal 30 of the distance measuring unit 23 along the returning distance measuring optical path 10 'is incident on the relay lens 22 via the light amount adjusting ND filter 8,
It becomes parallel light by the relay lens 22, and a half mirror,
The light is transmitted through the semi-transmissive reflection member 18 including a beam splitting prism and is condensed on the relay lens 21.
Light receiving unit 6 including D (special high-sensitivity light receiving diode), PD (light receiving diode), fiber connected to PD, etc.
It is configured to be incident on.
【００２０】他方、半透過反射鏡１３により反射され、
測距光路に対してほぼ直角に屈曲された基準光路１１
は、ミラー、プリズム等からなる反射鏡１５により測距
光路に平行に屈折され、リレーレンズ２０により平行光
にされて、光量調整用ＮＤフィルター８を透過するよう
に構成してある。On the other hand, the light is reflected by the semi-transmissive reflecting mirror 13,
Reference optical path 11 bent substantially at right angles to the distance measuring optical path
Is refracted in parallel with the distance measuring optical path by a reflecting mirror 15 including a mirror, a prism, etc., converted into parallel light by the relay lens 20, and transmitted through the light amount adjusting ND filter 8.
【００２１】該フィルター８を透過した基準光は、測距
ユニット２３内のミラー、プリズム等からなる２面反射
鏡１７により戻り方向に平行に屈折され、更に反射鏡１
６により前記戻りの測距光路１０上の半透過反射鏡１８
に入射するように構成してある。そして、半透過反射鏡
１８により、リレーレンズ２１に向かって反射された基
準光は、リレーレンズ２１により前記受光部６に集光す
るように構成してある。The reference light transmitted through the filter 8 is refracted in parallel to the return direction by the two-sided reflecting mirror 17 formed of a mirror, a prism, etc. in the distance measuring unit 23 and further reflected by the reflecting mirror 1.
6, the semi-transmissive reflecting mirror 18 on the return distance measuring optical path 10
It is configured to be incident on. Then, the reference light reflected by the semi-transmissive reflecting mirror 18 toward the relay lens 21 is configured to be condensed on the light receiving section 6 by the relay lens 21.
【００２２】尚、光量調整用ＮＤフィルター８は、図１
に記載の如く、単一のフィルター部材として測距光路及
び基準光路中に、それぞれ少なくとも二個所に介在可能
に設けてある。１４はその回転駆動を司る光量調整用Ｎ
Ｄフィルター駆動軸である。The ND filter 8 for adjusting the light quantity is shown in FIG.
As described in (1), a single filter member is provided in at least two places in the distance measuring optical path and the reference optical path so as to be able to intervene. Reference numeral 14 is a light amount adjusting N that controls the rotation drive.
It is a D filter drive shaft.
【００２３】[0023]
【効果】以上の通り、本発明による測距光学系によれ
ば、光源、シャッター、基準光路、フィルター、受光部
等を、望遠鏡光学系とは別体に測距ユニット内に収納
し、該ユニットに望遠鏡光学系と光学的に接続する接続
端子を設けた構成を有するから、測距機能に必要な測距
ユニットと望遠鏡とを別々に携帯して、それぞれを簡単
に組み立てることができると共に、製造及び修理も別々
に行うことができる効果がある。As described above, according to the distance measuring optical system of the present invention, the light source, the shutter, the reference optical path, the filter, the light receiving portion, etc. are housed in the distance measuring unit separately from the telescope optical system, Since it has a configuration in which a connection terminal for optically connecting to the telescope optical system is provided, the distance measuring unit and the telescope necessary for the distance measuring function can be carried separately, and each can be easily assembled and manufactured. And, there is an effect that the repair can be performed separately.
【００２４】また、本発明の測距光学系によれば、前記
の測距光学系において、光量調整用ＮＤフィルター等と
して、単一のフィルター部材を測距光路及び基準光路中
に、それぞれ少なくとも二個所に介在可能に設けたか
ら、測距ユニット内のフィルター部材を単一にし、構造
と作動を簡素化できると共に、調整できる光量レベルの
範囲を広げることができる効果がある。According to the distance measuring optical system of the present invention, in the distance measuring optical system, a single filter member, such as an ND filter for adjusting the light amount, is provided in the distance measuring optical path and the reference optical path respectively. Since the filter unit in the distance measuring unit is provided so as to be able to intervene, the structure and operation can be simplified, and the range of the adjustable light amount level can be expanded.
【００２５】更に、本発明による測距光学系によれば、
前記測距光学系において、光源より発光する測距光の有
効範囲内に半透過反射部材を設け、測距光と同じ光路光
からの反射光を基準光路に送光するから、光源の特性、
あるいは温度等の気象環境条件で位相差の遅れ、あるい
は進みによる距離情報への誤差の影響を少なくすること
ができる効果がある。Further, according to the distance measuring optical system of the present invention,
In the distance measuring optical system, a semi-transmissive reflecting member is provided within the effective range of the distance measuring light emitted from the light source, and the reflected light from the same optical path light as the distance measuring light is sent to the reference optical path.
Alternatively, there is an effect that it is possible to reduce the influence of an error on the distance information due to the delay or advance of the phase difference due to weather environment conditions such as temperature.
【図１】本発明に係る測距光学系の一実施例を示す概略
説明図。FIG. 1 is a schematic explanatory view showing an embodiment of a distance measuring optical system according to the present invention.
【図２】本発明に係る測距光学系の一実施例の要部を示
す概略説明図。FIG. 2 is a schematic explanatory view showing a main part of an embodiment of a distance measuring optical system according to the present invention.
【図３】本発明に係る測距光学系の光源の特性を説明す
る説明図。FIG. 3 is an explanatory diagram illustrating characteristics of a light source of a distance measuring optical system according to the present invention.
【図４】従来の測距光学系の一実施例を示す概略説明
図。FIG. 4 is a schematic explanatory view showing an embodiment of a conventional distance measuring optical system.
１・・・対物レンズ ２・・・分離プリズム ３・・・光源 ４・・・測距光・基準光の切り替えシャッター ５・・・シャッター駆動用モータ ６・・・受光部 ７・・・干渉フィルター ８・・・光量調整用ＮＤフィルター ９・・・光量調整用ＮＤフィルター駆動用モータ １０・・・測距光路（送信側） １０’・・測距光路（受信側） １１・・・基準光路 １２・・・反射鏡 １３・・・半透過反射部材 １４・・・光量調整用ＮＤフィルター駆動軸 １５・・・反射鏡 １６・・・反射鏡 １７・・・反射鏡 １８・・・反射鏡 １９・・・リレーレンズ ２０・・・リレーレンズ ２１・・・リレーレンズ ２２・・・リレーレンズ ２３・・・測距ユニット ２４・・・接続用ファイバー ２５・・・接続用ファイバー ２６・・・望遠鏡光学系 ２７・・・接続端子部 ２８・・・接続端子部 ２９・・・接続端子部 ３０・・・接続端子部 DESCRIPTION OF SYMBOLS 1 ... Objective lens 2 ... Separation prism 3 ... Light source 4 ... Distance measuring light / reference light switching shutter 5 ... Shutter drive motor 6 ... Light receiving unit 7 ... Interference filter 8 ... ND filter for adjusting light amount 9 ... Motor for driving ND filter for adjusting light amount 10 ... Distance measuring optical path (transmitting side) 10 '... Distance measuring optical path (receiving side) 11 ... Reference optical path 12・ ・ ・ Reflecting mirror 13 ・ ・ ・ Semi-transmissive reflecting member 14 ・ ・ ・ Light amount adjusting ND filter drive shaft 15 ・ ・ ・ Reflecting mirror 16 ・ ・ ・ Reflecting mirror 17 ・ ・ ・ Reflecting mirror 18 ・ ・ ・ Reflecting mirror 19 ・..Relay lens 20 ... relay lens 21 ... relay lens 22 ... relay lens 23 ... distance measuring unit 24 ... connection fiber 25 ... connection fiber 26 ... telescope optical system 27 ... contact The terminal section 28 ... connection terminal portion 29 ... connection terminal portion 30 ... connection terminal part
【手続補正書】[Procedure amendment]
【提出日】平成３年９月６日[Submission date] September 6, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正方法】変更[Correction method] Change
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正方法】変更[Correction method] Change
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正方法】変更 ─────────────────────────────────────────────────────
[Correction method] Change ────────────────────────────────────────────── ────────
【手続補正書】[Procedure amendment]
【提出日】平成４年１１月２７日[Submission date] November 27, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Name of item to be corrected] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１９】 戻りの測距光路１０’に沿って測距ユニ
ット２３の接続端子３０に入射した測距光は、光量調整
用ＮＤフィルター８を介してリレーレンズ２２に入射
し、リレーレンズ２２により平行光となり、ハーフミラ
ー、ビームスップリッタープリズム等からなる半透過反
射部材１８を透過してリレーレンズ２１に集光されて、
ＡＰＤ（特殊高感度受光ダイオード）、ＰＤ（受光ダイ
オード）等に接続するファイバー等からなる受光部６に
入射するように構成してある。The distance measuring light that has entered the connection terminal 30 of the distance measuring unit 23 along the returning distance measuring optical path 10 ′ enters the relay lens 22 through the ND filter 8 for adjusting the light amount, and is parallelized by the relay lens 22. It becomes light, is transmitted through the semi-transmissive reflection member 18 composed of a half mirror, a beam splitter prism, etc., and is condensed on the relay lens 21.
It is configured so that it is incident on the light receiving portion 6 formed of a fiber or the like connected to APD (special high sensitivity light receiving diode), PD (light receiving diode ) or the like.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】 該フィルター８を透過した基準光は、測
距ユニット２３内のミラー、プリズム等からなる２面反
射鏡１７により戻り方向に平行に屈折され、更に反射鏡
１６により前記戻りの測距光路１０’上の半透過反射鏡
１８に入射するように構成してある。そして、半透過反
射鏡１８により、リレーレンズ２１に向かって反射され
た基準光は、リレーレンズ２１により前記受光部６に集
光するように構成してある。The reference light that has passed through the filter 8 is refracted in parallel in the return direction by a two-sided reflecting mirror 17 formed of a mirror, a prism, etc. in the distance measuring unit 23, and is further reflected by the reflecting mirror 16 in the returning distance measuring optical path. It is arranged to enter the semi-transmissive reflecting mirror 18 on the 10 '. Then, the reference light reflected by the semi-transmissive reflecting mirror 18 toward the relay lens 21 is configured to be condensed on the light receiving section 6 by the relay lens 21.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２３[Name of item to be corrected] 0023
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２３】[0023]
【効果】以上の通り、本発明による測距光学系によれ
ば、光源、シャッター、基準光路、フィルター、受光部
等を、望遠鏡光学系とは別体に測距ユニット内に収納
し、該ユニットに望遠鏡光学系と光学的に接続する接続
端子を設けた構成を有するから、測距機能に必要な測距
ユニットと望遠鏡とを別々に携帯して、それぞれを簡単
に接続することにより、測距光学系を組み立てることが
できると共に、製造及び修理も別々に行うことができる
効果がある。As described above, according to the distance measuring optical system of the present invention, the light source, the shutter, the reference optical path, the filter, the light receiving portion, etc. are housed in the distance measuring unit separately from the telescope optical system, Since it has a configuration in which a connection terminal for optically connecting to the telescope optical system is provided, the distance measuring unit and the telescope necessary for the distance measuring function are carried separately and easily connected to each other, so that the distance measurement can be performed. The optical system can be assembled, and manufacturing and repair can be performed separately.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０２Ｂ 7/40 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location G02B 7/40
Claims (3)
光源から発光された光をシャッターにより測距光路と基
準光路に切り替え、測距光路は望遠鏡光学系を通って、
基準光路は直接的に、それぞれ光量調整用ＮＤフィルタ
ー等を介して受光部に入射し、光変換して電気信号と
し、その電気信号の位相差により距離を測量する測距光
学系において、前記光源、シャッター、基準光路、フィ
ルター、受光部等を、望遠鏡光学系とは別体に測距ユニ
ット内に収納し、該ユニットに望遠鏡光学系と光学的に
接続する接続端子を設けたことを特徴とする測距光学
系。1. A shutter switches light emitted from a light source into which an electric signal is converted by a light emitting element to a distance measuring optical path and a reference optical path, and the distance measuring optical path passes through a telescope optical system,
In the distance measuring optical system, the reference optical path is directly incident on the light receiving portion through the light amount adjusting ND filter or the like, converted into an electric signal, and the distance is measured by the phase difference of the electric signal. The shutter, the reference optical path, the filter, the light receiving unit, etc. are housed in a distance measuring unit separately from the telescope optical system, and the unit is provided with a connection terminal for optically connecting to the telescope optical system. Distance measuring optical system.
光学系において、測距ユニット内の光量調整用ＮＤフィ
ルター等として、単一のフィルター部材を測距光路及び
基準光路中に、それぞれ少なくとも二個所に介在可能に
設けたことを特徴とする測距光学系。2. The distance measuring optical system according to claim 1, wherein a single filter member is used as a light amount adjusting ND filter in the distance measuring unit in the distance measuring optical path and the reference optical path. A distance-measuring optical system characterized by being provided in at least two places so that they can be interposed.
載の測距光学系において、光源より発光する測距光の有
効範囲内に半透過反射部材を設け、透過光を測距光路に
送光する一方、反射光を基準光路に送光する構成を備え
たことを特徴とする測距光学系。3. The distance measuring optical system according to claim 1 or 2, wherein a semi-transmissive reflecting member is provided within an effective range of the distance measuring light emitted from the light source, and the transmitted light is used as a distance measuring optical path. A distance-measuring optical system having a structure for transmitting reflected light to a reference optical path while transmitting light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412045A JP2641111B2 (en) | 1990-12-19 | 1990-12-19 | Lightwave rangefinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412045A JP2641111B2 (en) | 1990-12-19 | 1990-12-19 | Lightwave rangefinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05312951A true JPH05312951A (en) | 1993-11-26 |
| JP2641111B2 JP2641111B2 (en) | 1997-08-13 |
Family
ID=18520935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2412045A Expired - Fee Related JP2641111B2 (en) | 1990-12-19 | 1990-12-19 | Lightwave rangefinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641111B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08292258A (en) * | 1995-04-21 | 1996-11-05 | Nikon Corp | Distance measuring equipment |
| JPH09281236A (en) * | 1996-04-16 | 1997-10-31 | Nikon Corp | Light wave range finder |
| JP2018004514A (en) * | 2016-07-05 | 2018-01-11 | 株式会社トプコン | Light wave distance meter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149985A (en) * | 1984-01-14 | 1985-08-07 | Asahi Optical Co Ltd | Optical distance measuring apparatus |
| JPH02118284U (en) * | 1989-03-07 | 1990-09-21 |
-
1990
- 1990-12-19 JP JP2412045A patent/JP2641111B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149985A (en) * | 1984-01-14 | 1985-08-07 | Asahi Optical Co Ltd | Optical distance measuring apparatus |
| JPH02118284U (en) * | 1989-03-07 | 1990-09-21 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08292258A (en) * | 1995-04-21 | 1996-11-05 | Nikon Corp | Distance measuring equipment |
| JPH09281236A (en) * | 1996-04-16 | 1997-10-31 | Nikon Corp | Light wave range finder |
| JP2018004514A (en) * | 2016-07-05 | 2018-01-11 | 株式会社トプコン | Light wave distance meter |
| US10732267B2 (en) | 2016-07-05 | 2020-08-04 | Topcon Corporation | Electro-optical distance meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2641111B2 (en) | 1997-08-13 |
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