EP1300712A2 - Systèmes optiques utilisant des réflecteurs - Google Patents

Systèmes optiques utilisant des réflecteurs Download PDF

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Publication number
EP1300712A2
EP1300712A2 EP02256927A EP02256927A EP1300712A2 EP 1300712 A2 EP1300712 A2 EP 1300712A2 EP 02256927 A EP02256927 A EP 02256927A EP 02256927 A EP02256927 A EP 02256927A EP 1300712 A2 EP1300712 A2 EP 1300712A2
Authority
EP
European Patent Office
Prior art keywords
light
reflector
optical system
reflectors
emitter
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.)
Withdrawn
Application number
EP02256927A
Other languages
German (de)
English (en)
Other versions
EP1300712A3 (fr
Inventor
George Heftman
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.)
Nicotech Ltd
Original Assignee
Nicotech 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 Nicotech Ltd filed Critical Nicotech Ltd
Publication of EP1300712A2 publication Critical patent/EP1300712A2/fr
Publication of EP1300712A3 publication Critical patent/EP1300712A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/041—Optical design with conical or pyramidal surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • This invention relates to optical systems including reflectors.
  • an optical system including a reflector, wherein the reflector has a conical or pyramidal light-reflecting surface, and a light-emitter or -receptor is located in the region of the apex of reflector for, respectively, emitting light onto, or receiving light from, said surface.
  • the reflector may have an internal reflective surface and the light-emitter or -receptor may then be located within the reflector.
  • the system may include two axially-aligned conical reflectors that have internal reflective surfaces and truncated apices, the reflectors being retained with their truncated apices forming a common throat, and the light-emitter or -receptor being located within the throat for, respectively, emitting light into, or receiving light from, the reflective surfaces of both reflectors.
  • the reflector may be of conical form having an external reflective surface, and the light-emitter or -receptor in this case may be located in the region of the apex externally of the reflector.
  • Two axially-aligned conical reflectors having external reflective surfaces may be provided, and in these circumstances they may be retained axially aligned and mutually inverted with the light-emitter or -receptor located between their apices for, respectively, emitting light onto, or receiving light from, both reflectors.
  • a light source which in this case is in the form of a light-emitting diode (LED) 1 is located on the axis 2 of a reflector 3.
  • the reflector 3 has the form of a right circular cone that is truncated at its apex to give the reflector 3 a small throat 4 that accommodates the LED 1.
  • the inner surface 5 of the reflector 3 is reflective, and light-rays emitted by the LED 1, such as those identified individually as d to h in Figure 2, exit the reflector 3 either directly without reflection as in the case of rays e and h, or after one reflection as in the case of the ray d , or after more than one reflection as in the case of light-rays f and g .
  • the light emitted from within the reflector 3 is largely contained within its solid apex-angle A , with the extreme angle of exit illustrated by the ray h deviating from this by an angle X .
  • the deviation angle X is dependent on the axial length of the conical reflector 3 and arises from light, as in the case of the ray h, that originates from an outer edge of the LED 1 and just glances the rim 6 of the reflector 3. All the light emitted by the LED 1 is accordingly contained within the solid angle (A + 2X), and is thus well-defined by the geometry of the reflector-cone and the position of the light source within it.
  • the relationship between the horizontal and vertical angles of emitted light may be varied by change of geometry of the cone. This is illustrated in Figures 3 and 4 where a reflector 10 in the form of a 'rectangular cone' or pyramid is used, having horizontal and vertical dimensions H and V respectively.
  • the horizontal and vertical emission angles can be changed simply by changing the values of H and V .
  • Figures 5 and 6 illustrate an optical system which emits light over 360 degrees, in this case in azimuth, from an elongate light source 15 (for example a xenon tube).
  • the source 15 is located between the apices of two externally-reflective and mutually-inverted conical reflectors 16 and 17. More particularly, the source 15 extends horizontally at right angles to the vertical, common axis 18 of the axially-aligned reflectors 16 and 17, with its centre on the axis 18. Where the reflectors 16 and 17 have the same apex angle A as one another, all light-rays emitted by the system are largely contained within the angle B which equals (A - 180) degrees.
  • Figure 7 illustrates an optical system which emits light in two, opposite directions.
  • two internally-reflective reflectors 20 and 21 of conical form with truncated apices are joined together back to back to form a common throat 22 that accommodates symmetrically a light source 23 having a largely-omnidirectional output.
  • Light is emitted in opposite directions from the two reflectors 20 and 21, the polar diagram applicable for each direction being dictated by the geometry of the respective reflector 20 and 21. Accordingly, the same or different distributions of light can be achieved for the two directions according to whether the cone geometries are the same or different.
  • the inner surface 34 of each reflector 32 is chromium plated, and a tubular light source 35 (for example a xenon tube) is mounted axially and symmetrically within the common, truncated-apex throat 36 of the two reflectors 32.
  • a small lens 37 is incorporated centrally of each cup 33 so as to be located on the axis of the respective reflector 32. This compensates for the lack of light emission axially from the tubular source 35 by redistributing some of the light emitted from within reflector 32 so to even it out and avoid a central dark region.
  • optical system described with reference to Figures 8 and 9, may be used with advantage for warning and signal lighting in road and rail applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Stroboscope Apparatuses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP02256927A 2001-10-05 2002-10-07 Systèmes optiques utilisant des réflecteurs Withdrawn EP1300712A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0123979 2001-10-05
GBGB0123979.7A GB0123979D0 (en) 2001-10-05 2001-10-05 Opticle systems

Publications (2)

Publication Number Publication Date
EP1300712A2 true EP1300712A2 (fr) 2003-04-09
EP1300712A3 EP1300712A3 (fr) 2004-02-25

Family

ID=9923318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02256927A Withdrawn EP1300712A3 (fr) 2001-10-05 2002-10-07 Systèmes optiques utilisant des réflecteurs

Country Status (2)

Country Link
EP (1) EP1300712A3 (fr)
GB (2) GB0123979D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010114736A1 (fr) 2009-04-01 2010-10-07 The Curators Of The University Of Missouri Dispositif de spectroscopie optique pour détection non invasive du glucose dans le sang et procédé d'utilisation associé
EP2287629A3 (fr) * 2009-07-31 2012-04-11 Thierry Oggier Caméra pour durée de vol dotée d'un champ d'éclairage rectangulaire
US9566024B2 (en) 2008-05-22 2017-02-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
IT201700085455A1 (it) * 2017-07-26 2019-01-26 Emanuela Boron Dispositivo per il trattamento a biofotoni.
US10542919B2 (en) 2008-03-25 2020-01-28 St. Louis Medical Devices, Inc. Method and system for non-invasive blood glucose detection utilizing spectral data of one or more components other than glucose

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7572030B2 (en) 2005-06-22 2009-08-11 Carmanah Technologies Corp. Reflector based optical design
GB2433309B (en) * 2005-12-16 2010-09-08 Dorman Traffic Products Ltd Signal device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1496777A (en) * 1975-02-25 1978-01-05 Flint & Brown Ltd Navigation and other lanterns for small vessels
US5083192A (en) * 1990-04-30 1992-01-21 Kulicke And Soffa Industries, Inc. Cluster mount for high intensity leds
DE4332352C2 (de) * 1993-09-23 1997-12-11 Gerhard Emil Dipl Ing Reichert Leuchte mit einer Verstellvorrichtung für mindestens zwei Reflektoren
EP0676022A1 (fr) * 1993-10-15 1995-10-11 Sesto Severino Donati Reflecteur pyramidal a source radiante axiale
US5428365A (en) * 1994-03-25 1995-06-27 Inwave Corporation Method and apparatus for generating uniform illumination
GB2302938B (en) * 1995-07-01 1999-08-25 David John Dyson A low energy spotlight
US5913599A (en) * 1997-06-11 1999-06-22 Steris Corporation Surgical light with conical reflector
US6007225A (en) * 1997-10-16 1999-12-28 Advanced Optical Technologies, L.L.C. Directed lighting system utilizing a conical light deflector
EP1060342A4 (fr) * 1998-02-03 2003-03-19 Physical Optics Corp Formeur de faisceaux pour un systeme lumineux d'eclairage a distance et procede correspondant
WO2000019547A1 (fr) * 1998-09-25 2000-04-06 Maxim Integrated Products, Inc. Reflecteur biconique destine a capter le rayonnement des surfaces a la fois superieures et laterales d'une puce a del

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11147482B2 (en) 2008-03-25 2021-10-19 St. Louis Medical Devices, Inc. Method and system for non-invasive blood glucose measurement using signal change of the non-glucose components induced by the presence of glucose
US10542919B2 (en) 2008-03-25 2020-01-28 St. Louis Medical Devices, Inc. Method and system for non-invasive blood glucose detection utilizing spectral data of one or more components other than glucose
US9579049B2 (en) 2008-05-22 2017-02-28 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9814415B2 (en) 2008-05-22 2017-11-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11553859B2 (en) 2008-05-22 2023-01-17 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10973442B2 (en) 2008-05-22 2021-04-13 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10959650B2 (en) 2008-05-22 2021-03-30 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9566024B2 (en) 2008-05-22 2017-02-14 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11076781B2 (en) 2008-05-22 2021-08-03 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9629576B2 (en) 2008-05-22 2017-04-25 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9788764B2 (en) 2008-05-22 2017-10-17 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US11986291B2 (en) 2008-05-22 2024-05-21 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US9877670B2 (en) 2008-05-22 2018-01-30 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10070809B2 (en) 2008-05-22 2018-09-11 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
US10080515B2 (en) 2008-05-22 2018-09-25 St. Louis Medical Devices, Inc. Method and system for non-invasive optical blood glucose detection utilizing spectral data analysis
EP2413784A4 (fr) * 2009-04-01 2014-01-22 Univ Missouri Dispositif de spectroscopie optique pour détection non invasive du glucose dans le sang et procédé d'utilisation associé
EP2413784A1 (fr) * 2009-04-01 2012-02-08 The Curators Of The University Of Missouri Dispositif de spectroscopie optique pour détection non invasive du glucose dans le sang et procédé d'utilisation associé
RU2595488C2 (ru) * 2009-04-01 2016-08-27 Дзе Кьюрейторз Оф Дзе Юниверсити Оф Миссури Оптическое спектроскопическое устройство для неинвазивного определения глюкозы в крови и соответствующий способ применения
WO2010114736A1 (fr) 2009-04-01 2010-10-07 The Curators Of The University Of Missouri Dispositif de spectroscopie optique pour détection non invasive du glucose dans le sang et procédé d'utilisation associé
US9344705B2 (en) 2009-07-31 2016-05-17 Heptagon Micro Optics Pte. Ltd. Time of flight camera with rectangular field of illumination
US8803967B2 (en) 2009-07-31 2014-08-12 Mesa Imaging Ag Time of flight camera with rectangular field of illumination
EP2287629A3 (fr) * 2009-07-31 2012-04-11 Thierry Oggier Caméra pour durée de vol dotée d'un champ d'éclairage rectangulaire
IT201700085455A1 (it) * 2017-07-26 2019-01-26 Emanuela Boron Dispositivo per il trattamento a biofotoni.

Also Published As

Publication number Publication date
GB0123979D0 (en) 2001-11-28
GB2381065B (en) 2004-03-03
GB0223133D0 (en) 2002-11-13
GB2381065A (en) 2003-04-23
EP1300712A3 (fr) 2004-02-25

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