EP1300712A2 - Optische Systeme mit Reflektoren - Google Patents

Optische Systeme mit Reflektoren Download PDF

Info

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Withdrawn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
English (en)
French (fr)
Other versions
EP1300712A3 (de
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/de
Publication of EP1300712A3 publication Critical patent/EP1300712A3/de
Withdrawn legal-status Critical Current

Links

Images

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 Optische Systeme mit Reflektoren Withdrawn EP1300712A3 (de)

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 (de) 2003-04-09
EP1300712A3 EP1300712A3 (de) 2004-02-25

Family

ID=9923318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02256927A Withdrawn EP1300712A3 (de) 2001-10-05 2002-10-07 Optische Systeme mit Reflektoren

Country Status (2)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010114736A1 (en) 2009-04-01 2010-10-07 The Curators Of The University Of Missouri Optical spectroscopy device for non-invasive blood glucose detection and associated method of use
EP2287629A3 (de) * 2009-07-31 2012-04-11 Thierry Oggier Flugzeitkamera mit rechteckigem Beleuchtungsfeld
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
WO1995010731A1 (en) * 1993-10-15 1995-04-20 Sesto Severino Donati Pyramidal reflector having a radiation source on its axis
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
CA2319324A1 (en) * 1998-02-03 1999-08-05 Physical Optics Corporation Beamformer for a remotely illuminated lighting system and method
WO2000019547A1 (en) * 1998-09-25 2000-04-06 Maxim Integrated Products, Inc. Biconic reflector for collecting radiation from both top and side surfaces of led die

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
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
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
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
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
US12036019B2 (en) 2008-05-22 2024-07-16 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
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
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
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
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
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
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
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
EP2413784A4 (de) * 2009-04-01 2014-01-22 Univ Missouri Optische spektroskopievorrichtung für nichtinvasive blutzuckererkennung und verwendungsverfahren dafür
WO2010114736A1 (en) 2009-04-01 2010-10-07 The Curators Of The University Of Missouri Optical spectroscopy device for non-invasive blood glucose detection and associated method of use
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
US8803967B2 (en) 2009-07-31 2014-08-12 Mesa Imaging Ag Time of flight camera with rectangular field of illumination
EP2287629A3 (de) * 2009-07-31 2012-04-11 Thierry Oggier Flugzeitkamera mit rechteckigem Beleuchtungsfeld
US9344705B2 (en) 2009-07-31 2016-05-17 Heptagon Micro Optics Pte. Ltd. Time of flight camera with rectangular field of illumination
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
EP1300712A3 (de) 2004-02-25
GB2381065A (en) 2003-04-23
GB2381065B (en) 2004-03-03
GB0223133D0 (en) 2002-11-13

Similar Documents

Publication Publication Date Title
RU2552610C2 (ru) Осветительное устройство и линза, подходящая для такого осветительного устройства
US7581855B2 (en) Apparatus and method for improved illumination area fill
US6166860A (en) Screen illumination apparatus and method
US20040155565A1 (en) Method and apparatus for the efficient collection and distribution of light for illumination
US6854865B2 (en) Reflector for light emitting objects
AU2008251712A1 (en) LED illumination device with a highly uniform illumination pattern
US7566141B2 (en) Cassegrain optical configuration to expand high intensity LED flashlight to larger diameter lower intensity beam
CN107238049A (zh) 车辆用发光机构
JP4587847B2 (ja) 標識灯
EP1300712A2 (de) Optische Systeme mit Reflektoren
US5235499A (en) Lamp system having a torroidal light emitting member
EP3611428A1 (de) Reflektorschüssel und für farbiges scheinwerferlicht anwendbares, optisches system
US5143447A (en) Lamp system having a torroidal light emitting member
ES2229194T3 (es) Luz de señalizacion que comprende un elemento optico para realizar una funcion de señalizacion de manera autonoma.
CN103104884A (zh) 用于环形发光二极管阵列的二次光学装置
JP2000331508A (ja) Ｌｅｄランプおよび該ｌｅｄランプを光源とする車両用灯具
JPH11329037A (ja) 直角フィルムを使用する照明装置
CN205090232U (zh) 一种照明灯具
EP1064497A1 (de) Leuchte
CN109695853B (zh) 照明装置和机动车辆
CN105221968A (zh) 一种照明灯具
CN210624441U (zh) 一种聚光装置及一种灯具
CN214038254U (zh) 光斑均匀且边界干净截止的透镜
KR101870013B1 (ko) 반사식 광학장치를 구비한 조명 기구
JP2022502814A (ja) 照明装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7G 02B 27/00 B

Ipc: 7F 21V 7/00 B

Ipc: 7G 02B 19/00 B

Ipc: 7G 02B 17/06 A

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20040405

17Q First examination report despatched

Effective date: 20040430

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051123