JPH05213286A - Fixed star sensor - Google Patents
Fixed star sensorInfo
- Publication number
- JPH05213286A JPH05213286A JP4004365A JP436592A JPH05213286A JP H05213286 A JPH05213286 A JP H05213286A JP 4004365 A JP4004365 A JP 4004365A JP 436592 A JP436592 A JP 436592A JP H05213286 A JPH05213286 A JP H05213286A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- dust
- lens system
- optical lens
- star sensor
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
- G01S3/782—Systems for determining direction or deviation from predetermined direction
- G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
- G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
- G01S3/7867—Star trackers
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は恒星センサに関し、特に
人工衛星搭載用の恒星センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a star sensor, and more particularly to a star sensor mounted on an artificial satellite.
【０００２】[0002]
【従来の技術】人工衛星に搭載する恒星センサは、三軸
姿勢安定制御を行なう上で必要な情報を得るために不可
欠な装置であり、一般的には不要な光をさえぎるための
フードカバーと、光学レンズ系と、センサとにより構成
されている。2. Description of the Related Art A star sensor mounted on an artificial satellite is an indispensable device for obtaining information necessary for carrying out three-axis attitude stability control, and generally has a hood cover for blocking unnecessary light. , An optical lens system and a sensor.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の恒星セ
ンサは、たまたま光学レンズ系内にひそんでいた塵埃等
が、軌道上の無重量状態においてレンズ表面に付着した
場合、それを除去する手段がないことから、観測画像の
劣化を引き起こすことを回避することができないという
欠点があった。In the conventional star sensor described above, when dust or the like that happens to be hidden in the optical lens system adheres to the lens surface in a weightless state on the orbit, a means for removing it is provided. Since it does not exist, there is a drawback that it is not possible to avoid causing deterioration of the observed image.
【０００４】本発明の目的は上述した欠点を除去し、レ
ンズ表面に付着した塵埃を除去し、観測画像の劣化を抑
圧しうる恒星センサを提供することにある。An object of the present invention is to provide a star sensor capable of eliminating the above-mentioned drawbacks, removing dust adhering to the lens surface, and suppressing deterioration of an observed image.
【０００５】[0005]
【課題を解決するための手段】本発明の恒星センサは、
人工衛星に搭載し、その姿勢制御に必要な情報を所得す
る恒星センサにおいて、光学レンズ系を支持する支持台
かつ前記光学レンズ系に近接して少なくとも１つの圧電
素子を取り付け、地上局からのコマンド信号によって駆
動させて前記光学レンズ系の含むレンズの表面に軌道上
無重量状態で付着した塵埃を払い落す手段を備えて構成
される。The star sensor of the present invention comprises:
In a star sensor mounted on an artificial satellite that obtains information necessary for its attitude control, at least one piezoelectric element is attached in the vicinity of the support base that supports the optical lens system and the optical lens system, and the command from the ground station. It is provided with means for driving by a signal to remove dust adhering to the surface of the lens included in the optical lens system in a weightless state on the track.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００７】図１は、本発明の一実施例の恒星センサの
縦断面図である。FIG. 1 is a vertical sectional view of a star sensor according to an embodiment of the present invention.
【０００８】図１に示す実施例は、光学系を不要光遮光
するフードカバー１と、光学系を介して入力するから視
野の画像データを得るＣＣＤ等を利用するセンサ素子２
と、光学レンズ系３と、光学レンズ系３を支持するレン
ズ支持台４と、レンズ支持台４に取り付けた一対の圧電
素子５ａ，５ｂと、圧電素子５ａ，５ｂの駆動と、駆動
の制御を行なう駆動制御部６とを備えて成る。In the embodiment shown in FIG. 1, a hood cover 1 that shields an optical system from unnecessary light, and a sensor element 2 that uses a CCD or the like to obtain image data of a visual field by inputting through the optical system.
An optical lens system 3, a lens support base 4 for supporting the optical lens system 3, a pair of piezoelectric elements 5a and 5b attached to the lens support base 4, drive of the piezoelectric elements 5a and 5b, and control of drive. And a drive control unit 6 for performing the operation.
【０００９】なお、圧電素子は、レンズ支持台４の光学
レンズ系３のレンズに極力近接させた位置の１個所もし
くは複数個所、図１の場合は２個所を選んで取り付けら
れる。It should be noted that the piezoelectric element is mounted at one or a plurality of positions which are located as close as possible to the lens of the optical lens system 3 of the lens support 4, and in the case of FIG.
【００１０】図２に、図１の圧電素子の取付内容を示
す。FIG. 2 shows the mounting contents of the piezoelectric element shown in FIG.
【００１１】レンズ支持台４上、かつ光学レンズ系３の
レンズに近接した位置を選択して接着結合された圧電素
子５ａの対向両面に、蒸着により金属電極８が形成さ
れ、上方の金属電極８には給電用電線１０が結合され、
また接触面側の金属電極８には給電用金属シート９を介
して給電線１０が結合されている。Metal electrodes 8 are formed by vapor deposition on the opposite surfaces of the piezoelectric element 5a, which are bonded and bonded on the lens support 4 at a position close to the lens of the optical lens system 3, and the upper metal electrode 8 is formed. Is connected to the power supply wire 10,
A power supply line 10 is connected to the metal electrode 8 on the contact surface side via a power supply metal sheet 9.
【００１２】次に、本実施例の動作について説明する。Next, the operation of this embodiment will be described.
【００１３】駆動制御部６は、地上局からのコマンド信
号によって動作のオン／オフを制御され、オンにコマン
ドされた場合には圧電素子５ａ，５ｂ駆動用の高周波交
流電圧を発生し、給電用電線１０を介して圧電素子５
ａ，５ｂの対向する一対の金属電極８に印加して、印加
高周波交流電圧の周波数に対応した振動数の振動を発生
させる。The drive control section 6 is controlled to turn on / off the operation by a command signal from the ground station. When the drive control section 6 is commanded to turn on, it generates a high frequency AC voltage for driving the piezoelectric elements 5a and 5b, and supplies the power. Piezoelectric element 5 via electric wire 10
It is applied to the pair of metal electrodes 8 facing each other at a and 5b to generate a vibration having a frequency corresponding to the frequency of the applied high frequency AC voltage.
【００１４】圧電素子５ａ，５ｂの振動によって光学レ
ンズ系３のレンズに付着した塵埃は払い落され、これに
より取得画像の品質劣化を著しく抑圧することができ
る。Dust adhering to the lens of the optical lens system 3 is wiped off by the vibration of the piezoelectric elements 5a and 5b, so that the quality deterioration of the acquired image can be significantly suppressed.
【００１５】[0015]
【発明の効果】以上説明したように本発明は、人工衛星
に搭載して姿勢制御に必要な情報を取得する恒星センサ
の光学レンズ系の支持部に圧電素子を取り付け、この圧
電素子に高周波交流電圧を印加してレンズに微弱振動を
与え、レンズ表面に付着した塵埃等をふり払うことによ
り、塵埃による取得画像の品質劣化を根本的に回避する
ことができる効果がある。As described above, according to the present invention, a piezoelectric element is attached to a support portion of an optical lens system of a star sensor which is mounted on an artificial satellite and acquires information necessary for attitude control. By applying a voltage to give a weak vibration to the lens and wipe off dust and the like adhering to the lens surface, it is possible to fundamentally avoid the quality deterioration of the acquired image due to the dust.
【図１】本発明の一実施例の縦断面図である。FIG. 1 is a vertical sectional view of an embodiment of the present invention.
【図２】図１の圧電素子の取得状態を示す斜視図であ
る。FIG. 2 is a perspective view showing an acquisition state of the piezoelectric element of FIG.
１ フードカバー ２ センサ素子 ３ 光学レンズ系 ４ レンズ支持台 ５ａ，５ｂ 圧電素子 ６ 駆動制御部 ７ 恒星 ８ 金属電極 ９ 金属シート １０ 給電用電線 1 Hood Cover 2 Sensor Element 3 Optical Lens System 4 Lens Support 5a, 5b Piezoelectric Element 6 Drive Control Section 7 Star 8 Metal Electrode 9 Metal Sheet 10 Power Supply Wire
Claims (1)
な情報を所得する恒星センサにおいて、光学レンズ系を
支持する支持台かつ前記光学レンズ系に近接して少なく
とも１つの圧電素子を取り付け、地上局からのコマンド
信号によって駆動させて前記光学レンズ系の含むレンズ
の表面に軌道上無重量状態で付着した塵埃を払い落す手
段を備えて成ることを特徴とする恒星センサ。1. A star sensor mounted on an artificial satellite, which obtains information necessary for attitude control thereof, comprises a support for supporting an optical lens system and at least one piezoelectric element mounted in proximity to the optical lens system, A star sensor, comprising means for driving off a command signal from a ground station to remove dust adhering to the surface of a lens included in the optical lens system in a weightless state on an orbit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4004365A JP2853427B2 (en) | 1992-01-14 | 1992-01-14 | Stellar sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4004365A JP2853427B2 (en) | 1992-01-14 | 1992-01-14 | Stellar sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05213286A true JPH05213286A (en) | 1993-08-24 |
| JP2853427B2 JP2853427B2 (en) | 1999-02-03 |
Family
ID=11582353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4004365A Expired - Lifetime JP2853427B2 (en) | 1992-01-14 | 1992-01-14 | Stellar sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2853427B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1482344A1 (en) * | 2002-05-17 | 2004-12-01 | Olympus Optical Co., Ltd. | Optical apparatus having photoelectric conversion element and vibrating dust-off glass plate |
| US7006138B2 (en) | 2000-12-28 | 2006-02-28 | Olympus Optical Co., Ltd. | Camera |
| US7280145B2 (en) | 2002-07-30 | 2007-10-09 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7324149B2 (en) | 2002-05-20 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7324148B2 (en) | 2002-04-26 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pickup device unit used therefor having a sealing structure between a dust proofing member and an image pick up device |
| US7339623B2 (en) | 2002-05-27 | 2008-03-04 | Olympus Optical Co., Ltd. | Camera and image pickup device unit which reduce influence of dust image quality |
| US7365788B2 (en) | 2003-02-07 | 2008-04-29 | Olympus Corporation | Imager apparatus |
| US7483075B2 (en) | 2003-06-23 | 2009-01-27 | Olympus Corporation | Image pickup apparatus |
| US7486326B2 (en) | 2000-12-28 | 2009-02-03 | Olympus Corporation | Optical apparatus having dust off function |
| US7492408B2 (en) | 2002-05-17 | 2009-02-17 | Olympus Corporation | Electronic imaging apparatus with anti-dust function |
| US7499639B2 (en) | 2004-09-22 | 2009-03-03 | Olympus Corporation | Electronic imaging device |
| US8199200B2 (en) | 2002-05-13 | 2012-06-12 | Olympus Corporation | Photographing device provided with dust removing mechanism |
| CN107444677A (en) * | 2017-09-08 | 2017-12-08 | 长光卫星技术有限公司 | The heating integrated structure of ray machine for multi-load high-precision joining |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320030U (en) * | 1986-07-23 | 1988-02-09 | ||
| JPH02294607A (en) * | 1989-05-09 | 1990-12-05 | Nec Corp | Light convergence adjusting device for telescope for space navigation object |
-
1992
- 1992-01-14 JP JP4004365A patent/JP2853427B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320030U (en) * | 1986-07-23 | 1988-02-09 | ||
| JPH02294607A (en) * | 1989-05-09 | 1990-12-05 | Nec Corp | Light convergence adjusting device for telescope for space navigation object |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7609315B2 (en) | 2000-12-28 | 2009-10-27 | Olympus Corporation | Vibrating dust removal camera |
| US7486326B2 (en) | 2000-12-28 | 2009-02-03 | Olympus Corporation | Optical apparatus having dust off function |
| US7724299B2 (en) | 2000-12-28 | 2010-05-25 | Olympus Corporation | Dust removal camera |
| US7006138B2 (en) | 2000-12-28 | 2006-02-28 | Olympus Optical Co., Ltd. | Camera |
| US7589780B2 (en) | 2002-04-26 | 2009-09-15 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit used therefor having a sealing structure between a dust-proofing member and an image pick-up device |
| US7324148B2 (en) | 2002-04-26 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pickup device unit used therefor having a sealing structure between a dust proofing member and an image pick up device |
| US8199200B2 (en) | 2002-05-13 | 2012-06-12 | Olympus Corporation | Photographing device provided with dust removing mechanism |
| US7492408B2 (en) | 2002-05-17 | 2009-02-17 | Olympus Corporation | Electronic imaging apparatus with anti-dust function |
| EP1482344A1 (en) * | 2002-05-17 | 2004-12-01 | Olympus Optical Co., Ltd. | Optical apparatus having photoelectric conversion element and vibrating dust-off glass plate |
| EP1482345A1 (en) * | 2002-05-17 | 2004-12-01 | Olympus Optical Co., Ltd. | Digital camera having piezo-driven vibrating dust-off glass plate |
| US7215372B2 (en) | 2002-05-17 | 2007-05-08 | Olympus Corporation | Optical apparatus having dust off function |
| US7324149B2 (en) | 2002-05-20 | 2008-01-29 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7339623B2 (en) | 2002-05-27 | 2008-03-04 | Olympus Optical Co., Ltd. | Camera and image pickup device unit which reduce influence of dust image quality |
| US7280145B2 (en) | 2002-07-30 | 2007-10-09 | Olympus Optical Co., Ltd. | Camera and image pick-up device unit having an optical member that is vibrated to remove dust |
| US7591598B2 (en) | 2002-07-30 | 2009-09-22 | Olympus Optical Co., Ltd. | Camera having a dust-proofing member that is vibrated to remove dust, the dust-proofing member being pressed by a spring pressing member toward a sealing part that seals a space between the dust-proofing member and an image pickup-device |
| US7686524B2 (en) | 2002-07-30 | 2010-03-30 | Olympus Optical Co., Ltd. | Image pick-up device unit having a dust-proofing member that is vibrated to remove dust, the dust-proofing member being pressed by a spring pressing member toward a sealing structure that seals an interval between the dust-proofing member and an image pick-up device |
| US7365788B2 (en) | 2003-02-07 | 2008-04-29 | Olympus Corporation | Imager apparatus |
| US7483075B2 (en) | 2003-06-23 | 2009-01-27 | Olympus Corporation | Image pickup apparatus |
| US7499639B2 (en) | 2004-09-22 | 2009-03-03 | Olympus Corporation | Electronic imaging device |
| CN107444677A (en) * | 2017-09-08 | 2017-12-08 | 长光卫星技术有限公司 | The heating integrated structure of ray machine for multi-load high-precision joining |
| CN107444677B (en) * | 2017-09-08 | 2020-06-23 | 长光卫星技术有限公司 | Optical-mechanical-thermal integrated structure for multi-load high-precision splicing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2853427B2 (en) | 1999-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981020 |