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WO1996010206A1 - Dispositif a lentille - Google Patents

Dispositif a lentille Download PDF

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Publication number
WO1996010206A1
WO1996010206A1 PCT/US1995/011608 US9511608W WO9610206A1 WO 1996010206 A1 WO1996010206 A1 WO 1996010206A1 US 9511608 W US9511608 W US 9511608W WO 9610206 A1 WO9610206 A1 WO 9610206A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
electromagnetic radiation
band
convex surface
convex
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/US1995/011608
Other languages
English (en)
Inventor
Yeshayahu Shai Eisenberg
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.)
Helfgott & Karas Pc
Original Assignee
Helfgott & Karas Pc
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 Helfgott & Karas Pc filed Critical Helfgott & Karas Pc
Priority to AU35877/95A priority Critical patent/AU3587795A/en
Priority to US08/809,577 priority patent/US5930055A/en
Publication of WO1996010206A1 publication Critical patent/WO1996010206A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/082—Catadioptric systems using three curved mirrors
    • G02B17/0824—Catadioptric systems using three curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0836—Catadioptric systems using more than three curved mirrors
    • G02B17/084—Catadioptric systems using more than three curved mirrors on-axis systems with at least one of the mirrors having a central aperture

Definitions

  • the present invention relates to electromagnet ⁇ ic radiation lens apparatus generally and more particu ⁇ larly to electromagnetic radiation lens apparatus having plural reflective surfaces.
  • the present invention seeks to provide improved apparatus constructed of a dielectric material which permits transmission of a spectral wave band of electro ⁇ magnetic radiation, the dielectric material having plural surfaces which reflect the electromagnetic radiation by being coated with a conductive material, and wherein the dielectric material includes one or more surfaces provid ⁇ ing total internal reflectance.
  • the present invention may be applicable for electromagnetic radiation, generally including for exam ⁇ ple RF, microwave, infrared, visible and ultraviolet radiation.
  • a unitary, at least partially dielectric, element having formed thereon plural electromagnetic radiation reflecting surfaces, at least one of which is a total internal reflection surface.
  • the unitary element comprises a multi-surface lens.
  • the multi-surface lens comprises a solid objective.
  • the plural electromagnetic radiation reflecting surfaces all have a common axis of symmetry.
  • the plural electromagnetic radia ⁇ tion reflecting surfaces may have different axes of symmetry.
  • At least one of the plural elec ⁇ tromagnetic radiation reflecting surfaces comprises a conical surface of revolution.
  • one or more of the plural electromagnetic radiation reflecting sur ⁇ faces may be of any other suitable configuration, such as, for example, aspheric surfaces, cubic splines and the like.
  • a multi-sur ⁇ face lens formed of a dielectric material and having a generally flat surface and a generally convex surface, the flat surface and the convex surface each having formed therein a portion defining a concave surface, the concave surface formed in the convex surface having a reflective coating formed thereon, the lens being config ⁇ ured and having an index of refraction such that a band of electromagnetic radiation entering the lens undergoes total internal reflection at at least one of the general ⁇ ly flat surface and the generally convex surface.
  • a multi- surface lens formed of a dielectric material and having a generally flat surface and a generally convex surface, the flat surface being formed with a protrusion and the convex surface being formed with a recess, the protrusion and the recess each having formed therein a concave surface, the concave surface formed in the convex surface having a reflective coating formed thereon, the lens being configured and having an index of refraction such that a band of electromagnetic radiation entering the lens undergoes total internal reflection at at least one of the generally flat surface and the generally convex surface.
  • the concave surface formed in the convex surface is reflectively coated on a portion there ⁇ of, thereby defining an uncoated portion of the concave surface, the reflectively coated portion and the uncoated portion of the concave surface having different radii of curvature.
  • a multi- surface lens formed of a dielectric material and having a generally flat surface and a generally convex surface, the convex surface having formed therein a recess defin ⁇ ing a concave surface, the convex surface having a re ⁇ flective coating formed thereon and the flat surface having a reflective coating formed on a portion thereof, thereby defining an annular portion on the flat surface with no reflective coating, the lens being configured and having an index of refraction such that a band of elec ⁇ tromagnetic radiation entering the lens undergoes total internal reflection at the annular portion.
  • concave and convex surfaces refer to the outer surface of the dielectric material.
  • the multi-surface lens may be used in afocal systems with angular magnification, such as a telescope, a modified Newtonian telescope, or forward-looking infrared (FLIR) systems.
  • angular magnification such as a telescope, a modified Newtonian telescope, or forward-looking infrared (FLIR) systems.
  • FLIR forward-looking infrared
  • the multi-surface lens may be used in transmit ⁇ ter systems, such as illuminators, such as a flash lamp, vehicle headlamp, spot light illuminator, operating room illuminator.
  • illuminators such as a flash lamp, vehicle headlamp, spot light illuminator, operating room illuminator.
  • Fig. 1 is a simplified illustration of a par ⁇ tially coated composite lens constructed and operative in accordance with one preferred embodiment of the present invention, used to receive and concentrate, image and focus a band of electromagnetic radiation;
  • Fig. 2 is a simplified illustration of a par ⁇ tially coated composite lens constructed and operative in accordance with another preferred embodiment of the present invention, used to receive and concentrate, image and focus a band of electromagnetic radiation;
  • Fig. 3 is a simplified illustration of a par ⁇ tially coated composite lens constructed and operative in accordance with yet another preferred embodiment of the present invention, used to receive and concentrate, image and focus a band of electromagnetic radiation;
  • Fig. 4 is a simplified illustration of the partially coated composite lens of Fig. 1 used to trans ⁇ mit a band of electromagnetic radiation;
  • Fig. 5 is a simplified illustration of the partially coated composite lens of Fig. 2 used to trans ⁇ mit a band of electromagnetic radiation;
  • Fig. 6 is a simplified illustration of the partially coated composite lens of Fig. 3 used to trans ⁇ mit a band of electromagnetic radiation;
  • Fig. 7 is a simplified illustration of an afocal system with angular magnification, constructed and operative in accordance with a preferred embodiment of the present invention.
  • Fig. 8 is a simplified illustration of a trans ⁇ mitter of a band of electromagnetic radiation, con ⁇ structed and operative in accordance with a preferred embodiment of the present invention.
  • Fig. 1 which illus ⁇ trates a multi-surface lens 10 formed of a dielectric material, constructed and operative in accordance with a preferred embodiment of the present invention.
  • the dielectric material is at least partially transmissive for a spectral wave band of electromagnetic radiation.
  • the multi-surface lens 10 defines a generally flat surface 12 and a generally convex surface 14.
  • the generally flat surface 12 and the generally convex sur ⁇ face 14 each have formed therein respective portions defining concave surfaces designated respectively by reference numerals 16 and 18.
  • both the convex surface 14 and the concave surface 18 have formed thereon a conductive, that is, reflective coating 20. Additionally, a portion 21 of the flat surface 12 preferably has formed thereon a reflec ⁇ tive coating 22. The remainder of the flat surface 12 defines an annular window 24 through which an incoming band of electromagnetic radiation may be received.
  • the lens 10 is configured and has an index of refraction, such that electromagnetic waves entering the lens 10 via window 24 are reflected by reflective coating 20 at convex surface 14 at a required angle such that thereafter the rays of electromagnetic radiation undergo total internal reflection at window 24 as well as reflection at coated portion 21 on surface 12.
  • portion 21 may be uncoated and lens 10 may be configured such that the rays of electromagnetic radia ⁇ tion undergo total internal reflection at portion 21.
  • the electro ⁇ magnetic radiation is reflected off coating 20 at concave surface 18, and transmitted through, and may be refracted by, surface 16 to a focal plane 30.
  • Fig. 2 which illus ⁇ trates a multi-surface lens 110 formed of a dielectric material, constructed and operative in accordance with a preferred embodiment of the present invention.
  • the dielectric material is at least partially transmissive for a spectral wave band of electromagnetic radiation.
  • the multi-surface lens 110 defines a generally flat annular surface 112 and a generally convex surface 114. Centrally disposed with respect to surface 112 is a protrusion 115 defining a concave surface 116.
  • the gener ⁇ ally convex surface 114 has formed therein a concave surface 118.
  • both the convex surface 114 and the con ⁇ cave surface 118 have formed thereon a conductive, that is, reflective coating 120.
  • a conductive that is, reflective coating 120.
  • an uncoated portion of surface 118 designated by numeral 119, may have a different radius of curvature than the portions of surface 118 which are coated with reflective coating 120, as seen in Fig. 2.
  • a portion 121 of the flat surface 112 preferably has formed thereon a reflective coating 122 and surface 116 has formed thereon a reflective coating 124.
  • the remainder of the flat surface 112 de ⁇ fines an annular window 126 through which an incoming spectral wave band of electromagnetic radiation may be received.
  • the lens 110 is configured and has an index of refraction such that electromagnetic waves entering the lens 110 via window 126 are initially re ⁇ flected by reflective coating 120 at convex surface 114 at a required angle such that thereafter the rays of electromagnetic radiation undergo total internal reflec ⁇ tion at window 126 as well as reflection at coated por- tion 121 on surface 112.
  • portion 121 may be uncoated and lens 110 may be configured such that the rays of electromagnetic radiation undergo total internal reflection at portion 121.
  • the electro ⁇ magnetic radiation is reflected off coating 120 at con ⁇ cave surface 118 to surface 116, where it is again re ⁇ flected by coating 124, transmitted through, and may be refracted by, surface 119 onto an external focal plane 130, which may be flat or curved.
  • Fig. 3 which illus ⁇ trates a multi-surface lens 210 formed of a dielectric material, constructed and operative in accordance with a preferred embodiment of the present invention.
  • the dielectric material is at least partially transmissive for a spectral wave band of electromagnetic radiation.
  • the multi-surface lens 210 defines a generally flat surface 212 and a generally convex surface 214.
  • the generally convex surface 214 has formed therein a concave surface 218.
  • the convex surface 214 has formed thereon a conductive, that is, reflective coating 220.
  • a portion 221 of the flat surface 212 preferably has formed thereon a reflective coating 222.
  • the remain ⁇ der of the flat surface 212 defines an annular window 226 through which an incoming band of electromagnetic radia ⁇ tion may be received.
  • the lens 210 is configured and has an index of refraction such that electromagnetic radiation entering the lens 210 via window 226 is initially re ⁇ flected by reflective coating 220 at convex surface 214 at a required angle such that thereafter the rays of electromagnetic radiation undergo total internal reflec ⁇ tion at window 226 as well as reflection at coated por ⁇ tion 221 on surface 212.
  • portion 221 may be uncoated and lens 210 may be configured such that the rays of electromagnetic radiation undergo total internal reflection at portion 221.
  • the electro ⁇ magnetic radiation is reflected off surface 212 and transmitted through, and may be refracted by, surface 218 to an external image plane 230.
  • the partially coated composite lenses of Figs. 1 - 3 may be used in a variety of afocal systems with angular magnification, as seen in Fig. 7.
  • the angular magnification may be accomplished using lenses 280, as seen in Fig. 7.
  • afocal systems examples include telescopes, a modified Newtonian telescope and forward-looking infra ⁇ red (FLIR) systems.
  • FLIR forward-looking infra ⁇ red
  • the partially coated composite lenses of Figs. 1 - 3 may also be used in a system for aiding the vision of visually impaired persons.
  • Figs. 4 - 6 in which it seen that the partially coated lenses of Figs. 1 - 3 respectively may be used to transmit a band of electro ⁇ magnetic radiation.
  • Focal planes 30, 130 and 230 respec ⁇ tively are replaced by sources 50, 150 and 250 respec ⁇ tively of electromagnetic radiation.
  • Fig. 8 which illus ⁇ trates the partially coated lens of Fig. 6 used as a transmitter for a source 300 of a band of electromagnetic radiation.
  • illumina ⁇ tors such as a flash lamp, vehicle headlamp, spot light illuminator, operating room illuminator.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

L'invention a trait à un élément monobloc au moins partiellement diélectrique sur lequel sont formées plusieurs surfaces réfléchissant les rayonnements électromagnétiques, dont une au moins constitue une surface de réflexion interne totale.
PCT/US1995/011608 1994-09-29 1995-09-14 Dispositif a lentille Ceased WO1996010206A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU35877/95A AU3587795A (en) 1994-09-29 1995-09-14 Lens apparatus
US08/809,577 US5930055A (en) 1994-09-29 1995-09-14 Lens apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL111107 1994-09-29
IL11110794A IL111107A (en) 1994-09-29 1994-09-29 Optical apparatus

Publications (1)

Publication Number Publication Date
WO1996010206A1 true WO1996010206A1 (fr) 1996-04-04

Family

ID=11066588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/011608 Ceased WO1996010206A1 (fr) 1994-09-29 1995-09-14 Dispositif a lentille

Country Status (3)

Country Link
AU (1) AU3587795A (fr)
IL (1) IL111107A (fr)
WO (1) WO1996010206A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769992A1 (fr) * 1997-10-21 1999-04-23 Thomson Csf Dispositif optique a modulation de polarisation pour la mesure de distance et/ou de vitesse d'objet
EP1010992A3 (fr) * 1998-12-18 2003-03-19 Sick Ag Système optique
KR100658145B1 (ko) * 2005-12-13 2006-12-14 삼성전기주식회사 모바일 카메라 광학계의 광학 렌즈 시스템

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US929795A (en) * 1909-04-22 1909-08-03 Zeiss Carl Fa Illuminating system.
US2380887A (en) * 1941-05-22 1945-07-31 Taylor Taylor & Hobson Ltd Optical system
US2485345A (en) * 1946-05-16 1949-10-18 Abe A Ackerman Reflecting telescopic objective of the cassegrainian type
GB2044476A (en) * 1978-11-29 1980-10-15 Pilkington Perkin Elmer Ltd Biocular viewing optical apparatus
US4580197A (en) * 1985-02-22 1986-04-01 Motorola, Inc. Light collimizing device
WO1988003658A1 (fr) * 1986-11-14 1988-05-19 Kalervo Alfred August Hermas Lentilles servant a recevoir et/ou a emettre un rayonnement infrarouge
US4770514A (en) * 1986-11-21 1988-09-13 David Silverglate Collimating compound catoptric immersion lens
EP0380035A2 (fr) * 1989-01-23 1990-08-01 Hughes Optical Products, Inc. Système d'affichage monté sur un casque
US5042928A (en) * 1990-02-20 1991-08-27 Eastman Kodak Company Parallel catadioptric optical element

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US929795A (en) * 1909-04-22 1909-08-03 Zeiss Carl Fa Illuminating system.
US2380887A (en) * 1941-05-22 1945-07-31 Taylor Taylor & Hobson Ltd Optical system
US2485345A (en) * 1946-05-16 1949-10-18 Abe A Ackerman Reflecting telescopic objective of the cassegrainian type
GB2044476A (en) * 1978-11-29 1980-10-15 Pilkington Perkin Elmer Ltd Biocular viewing optical apparatus
US4580197A (en) * 1985-02-22 1986-04-01 Motorola, Inc. Light collimizing device
WO1988003658A1 (fr) * 1986-11-14 1988-05-19 Kalervo Alfred August Hermas Lentilles servant a recevoir et/ou a emettre un rayonnement infrarouge
US4770514A (en) * 1986-11-21 1988-09-13 David Silverglate Collimating compound catoptric immersion lens
EP0380035A2 (fr) * 1989-01-23 1990-08-01 Hughes Optical Products, Inc. Système d'affichage monté sur un casque
US5042928A (en) * 1990-02-20 1991-08-27 Eastman Kodak Company Parallel catadioptric optical element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769992A1 (fr) * 1997-10-21 1999-04-23 Thomson Csf Dispositif optique a modulation de polarisation pour la mesure de distance et/ou de vitesse d'objet
EP0911645A1 (fr) * 1997-10-21 1999-04-28 Thomson-Csf Dispositif optique à modulation de polarisation pour la mesure de distance et/ou de vitesse d'objet
EP1010992A3 (fr) * 1998-12-18 2003-03-19 Sick Ag Système optique
KR100658145B1 (ko) * 2005-12-13 2006-12-14 삼성전기주식회사 모바일 카메라 광학계의 광학 렌즈 시스템
JP2007164167A (ja) * 2005-12-13 2007-06-28 Samsung Electro Mech Co Ltd モバイルカメラ光学系の光学レンズシステム

Also Published As

Publication number Publication date
AU3587795A (en) 1996-04-19
IL111107A (en) 1999-04-11
IL111107A0 (en) 1994-11-28

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