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WO2006075316A1 - Telescope anastigmatique a trois miroirs - Google Patents

Telescope anastigmatique a trois miroirs Download PDF

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Publication number
WO2006075316A1
WO2006075316A1 PCT/IL2006/000030 IL2006000030W WO2006075316A1 WO 2006075316 A1 WO2006075316 A1 WO 2006075316A1 IL 2006000030 W IL2006000030 W IL 2006000030W WO 2006075316 A1 WO2006075316 A1 WO 2006075316A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
optical system
power
tertiary
positive
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/IL2006/000030
Other languages
English (en)
Inventor
Aharon Nir
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.)
ELOP Electro Optics Industries Ltd
Original Assignee
ELOP Electro Optics Industries Ltd
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 ELOP Electro Optics Industries Ltd filed Critical ELOP Electro Optics Industries Ltd
Priority to EP06700367A priority Critical patent/EP1846792A1/fr
Publication of WO2006075316A1 publication Critical patent/WO2006075316A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/06—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors having a focussing action, e.g. parabolic mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G02B17/0626—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using three curved mirrors
    • G02B17/0642—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using three curved mirrors off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements

Definitions

  • the present invention relates to a catoptric system, more specifically to what is known as a Three Mirror Anastigmatic (TMA) telescope consisting of three aspherical off-axis mirrors.
  • TMA Three Mirror Anastigmatic
  • the TMA is capable of standing up to tough optical requirements, such as wide fields of view, fast apertures (low F-numbers) and wide spectral regions.
  • Using three aspherical off-axis mirrors allows satisfactory correcting and minimizing aberrations, such as spherical aberration, coma, astigmatism and field curvature.
  • the TMA is free of chromatic aberrations, being a catoptric system that uses only reflecting surfaces.
  • Typical uses of such optics have been known in the literature for many years, mainly in the form of some configurations: a first configuration that has an aperture stop on the primary mirror, a second configuration that has an aperture stop on the secondary mirror and a third configuration that has a secondary image, between the secondary and tertiary image.
  • the first two configurations are frequently used to achieve a telecentric design, the advantage of which is the minimizing of optical aberrations.
  • the third configuration has a real secondary image between the secondary and the tertiary mirror, as well as an exit pupil between the tertiary mirror and the image plane. It is used in infrared systems in order to insert a field stop at the secondary image plane and a cold stop in the exit pupil of the objective. None of the known systems, however, was found to be full satisfactory for use as fore-optics for spectrographs. Disclosure of the Invention
  • It is one of the objects of the present invention is to produce a TM A that can be used as a fore-optics in front of a spectrograph, in order to achieve hyper-spectral images.
  • a non- telecentric i.e., degradation-free fore-optics to obtain a compact and corrected optical system.
  • this is achieved by providing a reflective optical system, comprising a positive-power primary mirror; a negative-power secondary mirror; a positive-power tertiary mirror, and a folding mirror, characterized in that an aperture stop of said system is realized by said tertiary mirror, whereby said optical system is rendered non-telecentric.
  • Fig. 1 is a schematic side view of the optical system according to the present invention. Detailed Description of the Preferred Embodiments
  • Fig. 1 a three mirror anastigmatic telescope (TMA) 2 according to the invention, which also includes a folding mirror.
  • TMA three mirror anastigmatic telescope
  • a primary, positive-power-mirror 4 which reflects the object rays onto a secondary, negative-power mirror 6, whence the rays are reflected onto a tertiary, positive-power mirror 8. From there, the rays are brought into focus via a folding mirror 10.
  • At least one of mirrors 4, 6, 8 is titled relative to the optical axis of the system, and/or one is mounted off axis.
  • the entire system is rendered non-telecentric, with beneficial effects on compactness and correction. In fact, it is this non-telecentric feature that distinguishes the system according to the invention from the prior art.
  • Primary mirror 4 and secondary mirror 6 have rectangular apertures, because of beam wandering, while tertiary mirror 8 has a circular aperture, being the aperture stop.
  • the system has an optical speed of F/3.2, or at least not lower than F/4, with a full field of view of 25°, and covers a spectral region of 350 run to 2500 nm.
  • the relatively high angle of the chief rays makes the optical design of the spectrograph much easier.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne un système optique à réflexion comprenant un miroir primaire à puissance positive, un miroir secondaire à puissance négative, un miroir tertiaire à puissance positive, et un miroir de renvoi. La butée d'ouverture du système se fait au niveau du miroir tertiaire, le système optique étant rendu non télémétrique.
PCT/IL2006/000030 2005-01-13 2006-01-10 Telescope anastigmatique a trois miroirs Ceased WO2006075316A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06700367A EP1846792A1 (fr) 2005-01-13 2006-01-10 Telescope anastigmatique a trois miroirs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL166267 2005-01-13
IL16626705A IL166267A0 (en) 2005-01-13 2005-01-13 Three mirror anastigmatic telescope

Publications (1)

Publication Number Publication Date
WO2006075316A1 true WO2006075316A1 (fr) 2006-07-20

Family

ID=35985266

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2006/000030 Ceased WO2006075316A1 (fr) 2005-01-13 2006-01-10 Telescope anastigmatique a trois miroirs

Country Status (3)

Country Link
EP (1) EP1846792A1 (fr)
IL (1) IL166267A0 (fr)
WO (1) WO2006075316A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7936454B2 (en) * 2007-10-05 2011-05-03 Burt Jay Beardsley Three mirror anastigmat spectrograph
US7936455B2 (en) * 2007-10-05 2011-05-03 Burt Jay Beardsley Three mirror anastigmat spectrograph
JP2013122538A (ja) * 2011-12-12 2013-06-20 Samsung Techwin Co Ltd 結像光学系及び撮像装置
CN103869595A (zh) * 2014-02-24 2014-06-18 北京空间机电研究所 一种离轴三反相机焦面装调的方法
CN109143558A (zh) * 2018-10-11 2019-01-04 佛山科学技术学院 一种小型化全天候星敏感器光学系统
CN117420668A (zh) * 2023-12-16 2024-01-19 武汉墨光科技有限公司 一种基于自由曲面离轴四反的双波段监测系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265510A (en) * 1979-05-16 1981-05-05 Hughes Aircraft Company Three mirror anastigmatic optical system
DE4322536A1 (de) 1993-07-02 1995-01-12 Frank Gallert Aplanatisches und anastigmatisches Spiegelsystem mit ebenen Bildfeld
US5386316A (en) 1991-05-02 1995-01-31 Hughes Aircraft Company Optical systems having multiple simultaneous functions
US6084727A (en) 1999-04-28 2000-07-04 Raytheon Company All-reflective field-switching optical imaging system
JP2000199852A (ja) 1999-01-06 2000-07-18 Nikon Corp 軸外し反射光学系
US6441957B1 (en) 1999-02-05 2002-08-27 Zeiss Optronik Gmbh Directionally adjustable telescope arrangement
US20030063375A1 (en) 2001-07-31 2003-04-03 Masayuki Suzuki Reflection type demagnification projection optical system and exposure apparatus using the same
WO2003054609A1 (fr) 2001-12-14 2003-07-03 Thales Combinaison optique multichamp de type cassegrain
JP2005003804A (ja) 2003-06-10 2005-01-06 Olympus Corp 偏心光学系、送光装置、受光装置および光学システム
EP1521067A2 (fr) * 2003-10-01 2005-04-06 Carl Zeiss SMS GmbH Système d'imagerie optique

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265510A (en) * 1979-05-16 1981-05-05 Hughes Aircraft Company Three mirror anastigmatic optical system
US5386316A (en) 1991-05-02 1995-01-31 Hughes Aircraft Company Optical systems having multiple simultaneous functions
DE4322536A1 (de) 1993-07-02 1995-01-12 Frank Gallert Aplanatisches und anastigmatisches Spiegelsystem mit ebenen Bildfeld
JP2000199852A (ja) 1999-01-06 2000-07-18 Nikon Corp 軸外し反射光学系
US6441957B1 (en) 1999-02-05 2002-08-27 Zeiss Optronik Gmbh Directionally adjustable telescope arrangement
US6084727A (en) 1999-04-28 2000-07-04 Raytheon Company All-reflective field-switching optical imaging system
US20030063375A1 (en) 2001-07-31 2003-04-03 Masayuki Suzuki Reflection type demagnification projection optical system and exposure apparatus using the same
WO2003054609A1 (fr) 2001-12-14 2003-07-03 Thales Combinaison optique multichamp de type cassegrain
JP2005003804A (ja) 2003-06-10 2005-01-06 Olympus Corp 偏心光学系、送光装置、受光装置および光学システム
EP1521067A2 (fr) * 2003-10-01 2005-04-06 Carl Zeiss SMS GmbH Système d'imagerie optique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10 17 November 2000 (2000-11-17) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7936454B2 (en) * 2007-10-05 2011-05-03 Burt Jay Beardsley Three mirror anastigmat spectrograph
US7936455B2 (en) * 2007-10-05 2011-05-03 Burt Jay Beardsley Three mirror anastigmat spectrograph
JP2013122538A (ja) * 2011-12-12 2013-06-20 Samsung Techwin Co Ltd 結像光学系及び撮像装置
CN103869595A (zh) * 2014-02-24 2014-06-18 北京空间机电研究所 一种离轴三反相机焦面装调的方法
CN109143558A (zh) * 2018-10-11 2019-01-04 佛山科学技术学院 一种小型化全天候星敏感器光学系统
CN109143558B (zh) * 2018-10-11 2023-08-08 佛山科学技术学院 一种小型化全天候星敏感器光学系统
CN117420668A (zh) * 2023-12-16 2024-01-19 武汉墨光科技有限公司 一种基于自由曲面离轴四反的双波段监测系统
CN117420668B (zh) * 2023-12-16 2024-02-13 武汉墨光科技有限公司 一种基于自由曲面离轴四反的双波段监测系统

Also Published As

Publication number Publication date
EP1846792A1 (fr) 2007-10-24
IL166267A0 (en) 2006-01-15

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