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WO2009002003A1 - Système optique utilisant un miroir qui présente la possibilité d'une commande rapide de l'angle de réflexion - Google Patents

Système optique utilisant un miroir qui présente la possibilité d'une commande rapide de l'angle de réflexion Download PDF

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Publication number
WO2009002003A1
WO2009002003A1 PCT/KR2008/000934 KR2008000934W WO2009002003A1 WO 2009002003 A1 WO2009002003 A1 WO 2009002003A1 KR 2008000934 W KR2008000934 W KR 2008000934W WO 2009002003 A1 WO2009002003 A1 WO 2009002003A1
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WO
WIPO (PCT)
Prior art keywords
mirror
optical module
optical
observation
optical signal
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.)
Ceased
Application number
PCT/KR2008/000934
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English (en)
Inventor
Il Hung Park
Jae Hyoung Park
Young-Sun Park
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.)
Ewha Womans University
Original Assignee
Ewha Womans University
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 Ewha Womans University filed Critical Ewha Womans University
Publication of WO2009002003A1 publication Critical patent/WO2009002003A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G02B27/648—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake for automatically maintaining a reference alignment, e.g. in self-levelling surveying instruments
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B39/00—High-speed photography
    • G03B39/005—High-speed photography using image converters or amplifiers

Definitions

  • the present invention relates to optical systems. More particularly, this invention relates to an optical system that allows a triggering optical module to detect an object of observation in a wide field of view (FOV) and allows an imaging optical module with a high resolution to observe, in detail, the detected object of observation using a mirror, which can rapidly tilt the reflection angle, so the optical system has both a wide FOV function and a high resolution and can effectively observe a rapidly moving object.
  • FOV wide field of view
  • an optical module (or an optical system) includes all of the following features: a wide field of view (FOV), high resolution, and a high speed tracking function, it can be utilized in a variety of applications. That is, if an optical module can detect an object of observation over a wide range of area through a wide FOV function, observe the detected object of observation in detail through a high resolving power function, and even track a rapidly moving object, it can become an ideal optical module.
  • FOV wide field of view
  • high resolution high resolution
  • a high speed tracking function it can be utilized in a variety of applications. That is, if an optical module can detect an object of observation over a wide range of area through a wide FOV function, observe the detected object of observation in detail through a high resolving power function, and even track a rapidly moving object, it can become an ideal optical module.
  • the optical module has a relatively short focal length to provide a wide FOV, but a relatively long focal length to provide a high resolving power.
  • a 'wide FOV optical module' an optical module with a wide FOV
  • a 'high resolution optical module' an optical module with a high resolving power
  • transient events or phenomena such as a gamma-ray burst (GRB) or transient luminous events (TLE).
  • GRB gamma-ray burst
  • TLE transient luminous events
  • the optical signal receiving direction of the high resolution optical module must be controlled to be consistent with that of the wide FOV optical module so that the detected phenomena using a wide FOV optical module can be observed by the high resolution optical module. That is, in order to observe rapidly moving phenomena, such as a GRB or TLE, etc, the optical signal receiving direction of the high resolution optical module must be controlled at a high speed so as not to miss, i.e., in order to track, rapidly moving phenomena detected by the wide FOV optical module.
  • MEMS micro-electro-mechanical systems
  • MEMS are utilized in a variety of applications, such as a device for inflating an air bag to match a passenger's weight with a vehicle's speed as detected by the air bag, a global positioning system (GPS) sensor that reads a continuous track and a treatment process for freight transportation, an interactive sensor for sensing changes in the air flow on the surface of airplane wings according to the air resistance and performing a corresponding operation according to the sensing result, an optical switch for outputting an optical signal at 20 nanometers per second, a sensor-manipulated heating/cooling device, and a sensor installed in a building for changing the flexibility of matter that reacts to atmospheric pressure.
  • a mirror using MEMS technology i.e., an MEMS mirror
  • the MEMS mirror needs to be applied to an optical module to observe and track a rapidly moving object. Disclosure of Invention Technical Problem
  • the present invention solves the above problems, and provides an optical system that allows a triggering optical module to detect an object of observation in a wide field of view (FOV) and allows an imaging optical module with a high resolving power to capture an image and observe in detail the detected object of observation using a mirror, which can rapidly tilt the reflection angle, so the optical system has both a wide FOV function and a high resolving power and can effectively observe a rapidly moving object.
  • FOV wide field of view
  • the present invention provides an optical system including: (1) a triggering optical module for detecting an object of observation in a wide area, the triggering optical module having a wide field of view (FOV); (2) an imaging optical module for observing the object of observation in detail, the imaging optical module having a high resolving power and a FOV which is narrower than the wide FOV of the triggering optical module; (3) a mirror for controlling a reflection angle at a high speed, the mirror being located in front of the imaging optical module; and (4) a controller for determining whether the object of observation detected by the triggering optical module is a target of observation, and for controlling the mirror, so that the imaging optical module can input an optical signal from the detected object, form an image, and observe the detected object in detail, when it is determined that the detected object is a target of observation.
  • FOV wide field of view
  • the triggering optical module includes: (a) a first lens part or mirror part with a wide FOV; (b) a first aperture for the first lens part or mirror part; and (c) a first optical signal detector for detecting an optical signal from the first lens part or mirror part.
  • the imaging optical module includes: (a) a second lens part or mirror part with a focal length, which is longer than that of the first lens part of the mirror part, and a high resolving power; and (b) a second optical signal detector for detecting an optical signal from the second lens part or mirror part.
  • the imaging optical module further comprises a second aperture for the second lens part or mirror part.
  • the imaging optical module further includes at least one or more mirrors for altering an optical path between the second lens part and the second optical signal detector.
  • the first aperture is identical to the second aperture.
  • the first optical signal detector is identical to the second optical signal detector.
  • the mirror includes an MEMS micro-mirror or an MEMS micro-mirror array, with a tilting angle can be changed at a high speed to control the reflection angle in an analog method, and whose reflection angle is relatively large.
  • the optical system allows a triggering optical module to detect an object of observation in a wide field of view
  • FOV field-of-Vik
  • FOV field-of-Vik
  • Figure 1 is a schematic perspective view illustrating an optical system according to an embodiment of the present invention
  • Figure 2 is a plan view illustrating the optical system of Figure 1 ;
  • Figure 3 is a schematic plan view illustrating an optical system that shares one optical signal detector, according to an embodiment of the present invention
  • Figure 4 is a view illustrating a simulation where an optical module is performing a tracking process
  • Figure 5 is a view illustrating a spot formed on an optical signal detector by an on- axis optical signal and an optical signal whose incident angle is 10°in an optical system whose F number is 1
  • Figure 6 is a view illustrating a simulation result of an image formed on a pixel side of an optical signal detector when an on-axis optical signal and an optical signal whose incident angle is +9° are incident on the optical signal detector
  • Figure 7 is a plan view illustrating a schematic structure of an image optical module used for simulation
  • Figure 8 shows spots formed on the surface of an optical signal detector of an image optical module according to the incident angle of optical signals, in which Figures 8A, 8B, and 8C show spots when incident angles of an optical signal are 0°, 5°, and 10°
  • Figure 9 shows spots formed on the surface of an optical signal detector of an image optical module according to the incident angle of optical signals, in comparison with the spot of an optical signal whose incident angle is 0.5° in which Figures 9A, 9B, and 9C show spots when incident angles of an optical signal are 0°, 5°, and 10° respectively;
  • Figure 10 is ⁇ 0.7°are incident on the optical signal detector.
  • [39] 300 an optical system sharing an optical signal detector (another embodiment of the present invention)
  • 360a, 360b translucent mirror or micro- shutter
  • FIG. 1 is a schematic perspective view illustrating an optical system according to an embodiment of the present invention.
  • the optical system 100 is configured in sudi way that: a triggering optical module 110 with a wide field of view (FOV) detects an object of observation in a wide area; an imaging optical module 120 has a high resolving power and a FOV, which is narrower than the wide FOV of the triggering optical module, and observes the object of observation in detail; and a mirror 130 is located in front of the imaging optical module 120 and controls a reflection angle at a high speed.
  • FOV wide field of view
  • the optical system 100 includes a controller that determines whether the object of observation detected by the triggering optical module 110 is a target of observation, and controls the mirror 130, so that the imaging optical module 120 can input an optical signal from the detected object, form an image, and observe the detected object in detail, when it is determined that the detected object is a target of observation. Also, the optical system 100 further includes an aperture 140 for the mirror 130, which is hereinafter referred as a 'second aperture. 1
  • the triggering optical module 110 includes: a first lens part or mirror part 112 that has a relatively short focal length, which causes a wide FOV; a first aperture 114 for the first lens part or mirror part 112; and a first optical signal detector 116 for detecting an optical signal from the first lens part or mirror part 112.
  • the first lens part or mirror part 112 is implemented by a spherical or parabolic lens or mirror.
  • the first lens part or mirror part 112 may be implemented with a double Fresnel lens to secure a mvch wider field of view.
  • the imaging optical module 120 includes: a second lens part or mirror part 122 that has a focal length longer than that of the first lens part of mirror part 112 of the triggering optical module 110, which causes a narrow field of view but a high resolving power; and a second optical signal detector 126 for detecting an optical signal from the second lens part or mirror part 122.
  • the second lens part or mirror part 122 is implemented by a spherical or parabolic lens or mirror.
  • the imaging optical module 120 as shown in Figure 1, further includes at least one or more mirrors 128a, 128b, and 128c to establish a relatively long optical path between the seoond lens part or mirror part 122 and the second optical signal detector 126, which reduce the system size.
  • the mirrors 128a, 128b, and 128c are implemented by a normal reflection mirror.
  • the mirror 130 allows the imaging optical module 120 to form an image from an optical signal of an object of observation, under the control of the controller. To this end, the reflection angle of the mirror 130 must be altered or controlled at a high speed. It is preferable that the mirror 130 is implemented by an MEMS micro- mirror or an MEMS micro-mirror array whose tilting angle can be altered at a high speed to control the reflection angle in an analog method and whose tilting angle is relatively large, so as to effectively track and observe an object of observation, although the object moves rapidly.
  • the optical system 100 of the present invention is connected to a data storage unit, an interface unit, and a power supply.
  • the data storage unit stores detected optical signals.
  • the storage unit is implemented by a flash memory or a hard disc
  • the interface unit serves to interface between elements in the system.
  • the interface unit is implemented by a bus interface unit.
  • the power supply provides power to elements in the system.
  • the triggering optical module 110 serves as an optical module for searching for an object (event) of observation, and thus may have a relatively low resolution and a wide FOV. That is, since the triggering optical module 110 does not require a precise imaging ability, ultraviolet photons may be incident on the optical signal detector, possessing a relatively large possibility of aberration.
  • the imaging optical module 120 forms an image for a triggered object of observation at a narrow FOV but at a high resolution.
  • the second lens part or mirror part 122 of the imaging optical module 120 is implemented by a Fresnel lens whose focal length is 1 m and whose aperture is 10 cm. It should be understood that the second lens part or mirror part 122 may be implemented by a spherical lens or mirror.
  • the mirror 130, located in front of the second lens part or mirror part 122, is implemented by an MEMS micro-mirror array which is a planar array and has an aperture of 10 cm.
  • the MEMS micro-mirror array is operated in sudi a way as to face the object of observation detected by the triggering optical module and then provide an on-axis beam to the imaging optical module.
  • the MEMS micro- mirror array must be responded to within a response time that includes a processing time and transformation time for all signals since the object of observation has been detected, preferably 100 /M, so that the MEMS micro-mirror array can determine whether an object which moves at an approximate light speed on the ground is a target of observation and can track the detected object.
  • the MEMS micro-mirror array can detect and track transient events that emerge at random, such as astronomical phenomena, cosmic phenomena, and atmospheric phenomena, etc, for example a gamma ray bursts (GRB) and transient luminous events (TLE).
  • GRB gamma ray bursts
  • TLE transient luminous events
  • Figure 2 is a plan view illustrating the optical system of Figure 1.
  • the second optical signal detector 126 and the first optical signal detector 116 can be implemented in svch a way to be formed as a single optical signal detector; and also the mirror 130 and the triggering optical module 110 can be implemented in stch way to share a single aperture, instead the mirror 130 and the triggering optical module 110 utilizes the second aperture 140 and the first aperture 114, individually and respectively.
  • Figure 3 is a schematic plan view illustrating an optical system that shares one optical signal detector, according to an embodiment of the present invention.
  • the optical system 300 includes: a first lens part or mirror part 312 of a triggering optical module; a second lens part or mirror 322 and a reflection mirror 328, included in an imaging optical module; an MEMS micro-mirror 330; and an optical signal detector 350. Also, the optical system 300 further includes a transhxent mirror or micro-shutter 360a and 360b for providing an optical path to the imaging optical module.
  • the optical system 300 is the same as the optical system 100 except that the triggering optical module and the imaging optical module share a single optical signal detector 350. Therefore, the following description will omit explanation regarding the same elements and their operations between the optical systems 100 and 300.
  • the field of view of the triggering optical module are calculated as +10°, +8.5°, and +6.8° when F number (f/D) are 1, 1.2, and 1.5, correspondingly and respectively.
  • the triggering optical module for the simulation is configured to include a Fresnel lens and an optical signal detector. Using this configuration, simulation is performed for each F number.
  • Figure 4 is a view illustrating a simulation for an triggering optical module
  • Figure 5 is a view illustrating a spot formed on an optical signal detector by an on- axis optical signal and an optical signal whose incident angle is 10 in an optical system whose F number is 1.
  • the rectangle around the spot, as shown in Figure 5, is twice as large as the pixel of the detector.
  • FIG. 5 is a view illustrating a simulation result of an image formed on a pixel side of an optical signal detector when an on-axis optical signal and an optical signal whose incident angle is ⁇ 9° are incident on the optical signal detector.
  • the FOV of the optical system according to the present invention becomes +9° above in a trigger optical system whose F number is 1; and also, the optical signal incident within the FOV of the triggering optical module is detected by the optical signal detector and is used as a trigger signal.
  • the triggering optical module reads a position where an object of observation (for example, a GRB or TLE) occurs and then transmits the occurrence position of an object of observation to the controller in order to operate the mirror.
  • the controller changes the tilt angle of the mirror to face the oxurrence position of the object of observation. Therefore, the optical signal can be always transmitted, in on-axis, to the optical signal detector of the imaging optical module through the mirror, although an event occurs anywhere within the FOV of the triggering optical module.
  • the second lens of the imaging optical module uses a Fresnel lens whose focal length 1 m and whose aperture is 10 cm.
  • Figure 7 is a plan view illustrating a schematic structure of an imaging optical module used for simulation. Through the simulation of Figure 7, optical signals incident at other angles are monitored to ensure that they are always focused at a preset point by tilting the mirror. The simulation is performed after the detection surface of the optical signal detector is located at the focus of a lens. The mirror is tilted 45 with respect to the surface direction of the aperture of the optical system at the initial state. The optical signal incident orthogonally to the surface direction of the aperture passes through the lens by the mirror and then is focused on the center portion of the optical signal detector, and this case is defined as the optical signal incident angle is 0°.
  • Figure 8 shows spots formed on the surface of an optical signal detector of an image optical module according to the incident angle of optical signals, in which Figures 8A, 8B, and 8C show spots when incident angles of an optical signal are 0°, 5°, and 10° respectively.
  • the tilt angle of the mirror is increased and thus the effective reflection area of the mirror transmitted to the Fresnel lens is changed.
  • this phenomenon can be reduced when a micro-mirror array, which can be divided into small-sized mirrors and tilted, is used in the system.
  • the mirror of the optical system is implemented by an MEMS mirror array whose tilting angle is changed at a high speed so that the reflection angle can be rapidly controlled in an analog method.
  • tilting micro-mirrors make it possible to establish an on-axis optical system for the optical signals incident at other different angles and also to perform a magnification and an accurate measurement with respect to a wide FOV according to tiling angles of micro-mirrors.
  • Figure 9 shows spots formed on the surface of an optical signal detector of an image optical module according to the incident angle of optical signals, in comparison with a spot of an optical signal whose incident angle is 0.5°, in which Figures 9 A, 9B, and 9C show spots when incident angles of an optical signal are 0°, 5°, and 10° respectively.
  • This simulation is performed for the shape formed when an optical signal with a tilting angle of 0.5° is incident on the optical signal detector.
  • This simulation is performed after the mirror is tilted according to incident angles of optical signals, respectively, and thus the focus of the incident light is formed on the center of the optical signal detector.
  • This simulation is performed to predict the shape of imaging an object of observation.
  • the center of the rectangle is a traveling point of the chief ray.
  • FIG. 10 is a view illustrating a simulation to check an image formed on a pixel side of an optical signal detector.
  • Figure 10 is a view illustrating a simulation result of an image formed on a pixel side of an optical signal detector when an on-axis optical signal and an optical signal whose incident angle is +0.7° are incident on the optical signal detector. From the simulation as shown in Figure 10, the imaging optical module can observe a magnified image of an event.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

L'invention concerne un système optique utilisant un miroir. Le système optique comprend : (1) un module optique de déclenchement pour détecter un objet d'observation dans une large zone, le module optique de déclenchement ayant un large champ de vision (FOV) ; (2) un module optique d'imagerie pour observer l'objet d'observation en détail, le module optique d'imagerie ayant une puissance de résolution élevée et un FOV qui est plus étroit que le FOV large du module optique de déclenchement ; (3) un miroir pour commander un angle de réflexion à une vitesse élevée, le miroir étant situé devant le module optique d'imagerie ; et (4) un contrôleur pour déterminer si ou non l'objet d'observation détecté par le module optique de déclenchement est une cible d'observation, et pour commander le miroir, de telle sorte que le module optique d'imagerie peut mettre en entrée un signal optique provenant de l'objet détecté, former une image, et observer l'objet détecté en détail, lorsqu'il est déterminé que l'objet détecté est une cible d'observation. Le système optique permet à un module optique de déclenchement de détecter un objet d'observation dans un large FOV et permet à un module optique d'imagerie avec une résolution élevée d'observer en détail l'objet détecté d'observation à l'aide d'un miroir, qui peut incliner rapidement l'angle de réflexion. Par conséquent, le système optique a à la fois une fonction de large FOV et une résolution élevée et peut permettre d'observer de façon efficace un objet se déplaçant rapidement.
PCT/KR2008/000934 2007-06-28 2008-02-18 Système optique utilisant un miroir qui présente la possibilité d'une commande rapide de l'angle de réflexion Ceased WO2009002003A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0064147 2007-06-28
KR1020070064147A KR100767059B1 (ko) 2007-06-28 2007-06-28 고속으로 반사각을 제어할 수 있는 미러를 이용한 광학시스템

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WO2009002003A1 true WO2009002003A1 (fr) 2008-12-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102088511B1 (ko) * 2018-06-12 2020-03-12 한국항공대학교산학협력단 광학현상 촬영 장치 및 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265655A (ja) * 1996-03-27 1997-10-07 Matsushita Electric Ind Co Ltd マルチビーム生成方法及びマルチビーム光ピックアップ
US6359681B1 (en) * 1996-04-01 2002-03-19 Lockheed Martin Corporation Combined laser/FLIR optics system
US7158180B2 (en) * 2001-12-31 2007-01-02 Texas Instruments Incorporated System and method for varying exposure time for different parts of a field of view while acquiring an image
KR100715236B1 (ko) * 2007-02-14 2007-05-11 이화여자대학교 산학협력단 사건이나 사물을 관찰하기 위한 광학 모듈

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100715235B1 (ko) 2007-02-05 2007-05-11 이화여자대학교 산학협력단 사건이나 사물을 관찰하기 위한 광학 모듈

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265655A (ja) * 1996-03-27 1997-10-07 Matsushita Electric Ind Co Ltd マルチビーム生成方法及びマルチビーム光ピックアップ
US6359681B1 (en) * 1996-04-01 2002-03-19 Lockheed Martin Corporation Combined laser/FLIR optics system
US7158180B2 (en) * 2001-12-31 2007-01-02 Texas Instruments Incorporated System and method for varying exposure time for different parts of a field of view while acquiring an image
KR100715236B1 (ko) * 2007-02-14 2007-05-11 이화여자대학교 산학협력단 사건이나 사물을 관찰하기 위한 광학 모듈

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