EP2593711B1 - Lampe de poche à optique additionnelle à symétrie de révolution - Google Patents

Lampe de poche à optique additionnelle à symétrie de révolution Download PDF

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Publication number
EP2593711B1
EP2593711B1 EP11809298.0A EP11809298A EP2593711B1 EP 2593711 B1 EP2593711 B1 EP 2593711B1 EP 11809298 A EP11809298 A EP 11809298A EP 2593711 B1 EP2593711 B1 EP 2593711B1
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EP
European Patent Office
Prior art keywords
led
optical attachment
torch according
lens part
converging lens
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.)
Active
Application number
EP11809298.0A
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German (de)
English (en)
Other versions
EP2593711A2 (fr
Inventor
Rainer Opolka
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.)
Ledlenser GmbH and Co KG
Original Assignee
Ledlenser GmbH and Co KG
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Filing date
Publication date
Application filed by Ledlenser GmbH and Co KG filed Critical Ledlenser GmbH and Co KG
Publication of EP2593711A2 publication Critical patent/EP2593711A2/fr
Application granted granted Critical
Publication of EP2593711B1 publication Critical patent/EP2593711B1/fr
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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
    • F21V5/00—Refractors for light sources
    • F21V5/006—Refractors for light sources applied to portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/02—Electric lighting devices with self-contained electric batteries or cells characterised by the provision of two or more light sources
    • F21L4/022—Pocket lamps
    • F21L4/027—Pocket lamps the light sources being a LED
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F21V14/045—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors in portable lighting devices
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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

  • the present invention relates to a flashlight with an optical attachment that is rotationally symmetrical with respect to an optical axis, which has an outer reflector part, an inner collecting lens part and a rear surface with a blind hole, and a light-emitting diode (LED) arranged on a disk-shaped holder, the diameter of the reflector part 20 , 8 ⁇ 1 mm, the diameter of the collecting lens part is 11.4 ⁇ 1 mm and the height of the front lens (11.6 ⁇ 1) mm.
  • LED light-emitting diode
  • Flashlights of the type mentioned at the outset with the described optical lenses are known in principle from the prior art.
  • a light source being displaceable within the rear blind hole to change the radiation characteristic.
  • the light source is axially movable between two points, both of which are arranged within the blind hole.
  • a linear movement of the light source essentially changes the opening angle of a light cone, so that objects can be illuminated at different distances.
  • a disadvantage of the known flashlights with the described front optics is that the light intensity within the light cone is not uniform, the intensity on the optical axis generally being greatest while it is steadily decreasing towards the edge of the light cone.
  • a flashlight is to be created in which the radiation characteristic between a so-called moon position and a focus position can be adjusted.
  • a cone of light with a large opening angle and homogeneous light distribution is generated when the moon is positioned.
  • the focus position is characterized by a light cone with a comparatively small opening angle.
  • the usability of the flashlight should be as simple as possible, so that the desired setting can be found quickly and reliably.
  • the attachment optics being displaceable in relation to the LED so limited by two stops that an essentially homogeneous light cone is generated when the attachment optics are in contact with the holder, the thickness of the collecting lens part 3, 04 ⁇ 0.5 mm and in a focused setting the distance between the LED and the contact surface is 3.58 ⁇ 0.5 mm and the distance between the LED and a center plane is 8.88 ⁇ 1 mm.
  • the linear movement of the attachment optics along the optical axis is limited by a further stop, which forms the greatest possible distance between the LED and the attachment optics, the LED being in the focal point of the attachment optics in this position.
  • this stop is formed by a stop surface on the flashlight housing and the lamp head or within a connecting element.
  • the moon position in which the light is emitted homogeneously within a defined light cone, is optimally set when the holder is in contact with the stop surface of the front lens system and the LED therefore almost coincides with the stop surface plane.
  • the holder has thermally conductive surfaces which are in contact with the housing.
  • an annular contact surface can be provided for this purpose on the underside of the holder, with which it rests on a base-shaped projection inside the housing.
  • Aluminum, copper or brass are particularly suitable as preferred materials for the thermally conductive surfaces.
  • the particular radiation characteristic of the flashlight according to the invention is essentially determined by the geometric configuration of the front lens system, the length or size relationships being of particular importance for this.
  • the ratio between the diameter of the collecting lens part and the diameter of the reflector part is 0.55 ⁇ 0.1, preferably 0.55 ⁇ 0.05.
  • the ratio between the diameter of the converging lens part and the diameter of the reflector part is 0.55, with deviations of the order of 0.1, preferably of 0.5, being tolerable both in the positive and in the negative direction.
  • the ratio between the thickness of the collecting lens part and the height of the reflector part is 0.26 ⁇ 0.05, preferably 0.26 ⁇ 0.02.
  • the ratio between the distance of the LED to the contact surface to the distance of the LED to a center plane is 0.4 ⁇ 0.1, preferably 0.40 ⁇ 0.05.
  • the blind hole has a conical surface which has an opening angle of 23 ° ⁇ 5 °, preferably 23 ° ⁇ 2 °, with respect to the longitudinal axis.
  • various concrete dimensions of the geometric parts are provided, preferably the diameter of the reflector part 20.8 ⁇ 1 mm, the diameter of the collecting lens part 11.4 ⁇ 1 mm, the height of the front lens 11.6 ⁇ 1 mm Thickness of the collecting lens part 3.04 ⁇ 0.5 mm or, in the focused setting, the distance between the LED and the contact surface is 3.58 ⁇ 0.5 mm and the distance between the LED and a center plane is 8.88 ⁇ 1 mm.
  • the collecting lens part is preferably delimited by two differently convexly curved surfaces, the radius of the light entry surface being larger than the radius of the light exit surface.
  • a flashlight 1 has a housing 2, a lamp head 3, an attachment lens 4 and an LED 5.
  • the attachment lens 4 is fastened in the lamp head 3, which can be displaced longitudinally axially relative to the housing 2.
  • LED 5 is on one Bracket 6 attached, so that the overall optics can be moved relative to the LED.
  • the displacement of the lamp head 3 or the front lens 4 is limited by two stops.
  • the holder 6 forms a system with the front lens system 4, for which purpose the front lens system 4 has a rear surface designed as a stop surface 7.
  • the displacement is possible by means of a connecting element 8 which connects the lamp head 3 and the housing 2 to one another and which has a stop (not shown).
  • Fig. 1a shows a setting in which the front lens system 4 is in contact with the holder 6, so that the LED 5 almost coincides with the plane of the stop surface.
  • the radiation is characterized by a large radiation angle within which the light distribution is homogeneous.
  • Fig. 1b shows, in contrast, a focused setting, where the front lens 4 and the holder are arranged at a distance A from each other.
  • the front lens 4 has an inner collecting lens part 21, an outer reflector part 22 and a rear surface 23, which has a blind hole 24.
  • the blind hole 24 is delimited by a conical surface 25 which has an opening angle ⁇ of 23 ° with respect to the longitudinal axis 26.
  • the diameter 27 of the reflector part 22 is 20.8 mm, while the converging lens part 21 has a diameter 28 of 11.4 mm.
  • the front lens 4 shown is a total of 11.6 mm high (height 29) and the collecting lens part has a thickness 30 of 3.04 mm.
  • the distance 31 between the LED 5 and the stop surface 23 is 3.58 mm and the distance 32 between the LED 5 and a center plane 33 is 8.88 mm.
  • Fig. 3 shows schematically the beam path in a focused setting, the light rays emitted by the LED 5 striking the converging lens part 21, which are emitted at an angle ⁇ of ⁇ 32 °. These light beams are bundled by the converging lens part 21 to form a light cone 311 with a cone angle ⁇ of 4 °. The remaining light beams are emitted by the LED 5 at an angle ⁇ of 32 ° to 60 ° and hit the reflector part 22, which generates an axially parallel beam 321.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lenses (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Led Device Packages (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Stroboscope Apparatuses (AREA)

Claims (8)

  1. Lampe de poche comprenant une optique auxiliaire (4) qui est à symétrie de révolution par rapport à un axe optique (26) et qui possède une partie extérieure de réflecteur (22), une partie intérieure de lentille convergente (21) ainsi qu'une surface arrière (23) ayant un trou borgne (24), et une diode électroluminescente (DEL) (5) disposée sur un support (6) en forme de disque, dans laquelle le diamètre (27) de la partie de réflecteur (22) est de 20,8 ± 1 mm, le diamètre (28) de la partie de lentille convergente (21) est de 11,4 ± 1 mm et la hauteur (29) de l'optique auxiliaire (4) est de 11,6 ± 1 mm,
    caractérisée par le fait que ladite optique auxiliaire (4) est déplaçable par rapport à la DEL (5) en étant limitée par 2 butées, de telle sorte que, lorsque l'optique auxiliaire (4) est en appui sur le support (6), un cône de lumière pour l'essentiel homogène est généré, dans laquelle l'épaisseur (30) de la partie de lentille convergente (21) est de 3,04 ± 0,5 mm, et, en réglage focalisé, la distance (31) séparant la DEL (5) et la surface d'appui (23) est de 3,58 ± 0,5 mm et la distance (32) séparant la DEL (5) et un plan de centre (32) est de 8,88 ± 1 mm.
  2. Lampe de poche selon la revendication 1, caractérisée par le fait que le mouvement linéaire de l'optique auxiliaire (4) le long de l'axe optique est limité par une autre butée qui forme la distance la plus grande possible entre la DEL (5) et l'optique auxiliaire (4), dans cette position ladite DEL (5) étant située au foyer de l'optique auxiliaire (4).
  3. Lampe de poche selon l'une quelconque des revendications 1 ou 2, caractérisée par le fait que le support (6) présente des surfaces conductrices de chaleur qui sont en appui avec un boîtier (2).
  4. Lampe de poche selon l'une quelconque des revendications 1 à 3, caractérisée par le fait que le rapport (28/27) entre le diamètre (28) de la partie de lentille convergente (21) et le diamètre (27) de la partie de réflecteur (22) est de 0,55 ± 0,1, de préférence de 0,55 ± 0,05.
  5. Lampe de poche selon l'une quelconque des revendications 1 à 4, caractérisée par le fait que le rapport (30/29) entre l'épaisseur (30) de la partie de lentille convergente et la hauteur (29) de la partie de réflecteur (22) est de 0,26 ± 0,02.
  6. Lampe de poche selon l'une quelconque des revendications 1 à 5, caractérisée par le fait que, en réglage focalisé, le rapport (31/32) entre la distance (31) de la DEL par rapport à la surface d'appui et la distance (32) de la DEL par rapport à un plan de centre (33) est de 4 ± 0,1, de préférence de 0,40 ± 0,05.
  7. Lampe de poche selon l'une quelconque des revendications 1 à 6, caractérisée par le fait que le trou borgne (24) présente une surface latérale conique (25) qui présente un angle d'ouverture de 23° ± 5°, de préférence de 23° ± 2° par rapport à l'axe longitudinal (26).
  8. Lampe de poche selon l'une quelconque des revendications 1 à 7, caractérisée par le fait que la partie de lentille convergente (21) est délimitée par deux surfaces courbées de manière convexe de façon différente, dans laquelle le rayon de la surface d'entrée de lumière est supérieur au rayon de la surface de sortie de lumière.
EP11809298.0A 2010-07-16 2011-07-12 Lampe de poche à optique additionnelle à symétrie de révolution Active EP2593711B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027326.0A DE102010027326B4 (de) 2010-07-16 2010-07-16 Taschenleuchte mit rotationssymmetrischer Vorsatzoptik
PCT/DE2011/001453 WO2012010153A2 (fr) 2010-07-16 2011-07-12 Lampe de poche à optique additionnelle à symétrie de révolution

Publications (2)

Publication Number Publication Date
EP2593711A2 EP2593711A2 (fr) 2013-05-22
EP2593711B1 true EP2593711B1 (fr) 2020-02-12

Family

ID=45402827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11809298.0A Active EP2593711B1 (fr) 2010-07-16 2011-07-12 Lampe de poche à optique additionnelle à symétrie de révolution

Country Status (7)

Country Link
US (1) US8770783B2 (fr)
EP (1) EP2593711B1 (fr)
JP (1) JP5795063B2 (fr)
CN (1) CN103026122A (fr)
AU (1) AU2011282009B2 (fr)
DE (1) DE102010027326B4 (fr)
WO (1) WO2012010153A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180323354A1 (en) * 2017-05-07 2018-11-08 Yang Wang Light emitting device and method for manufacturing light emitting device
EP3473926B1 (fr) * 2017-10-23 2020-04-08 Glashütte Limburg Leuchten GmbH + Co. KG Luminaire et procede d'assemblage de deux parties
USD879345S1 (en) 2018-02-01 2020-03-24 E. Mishan & Sons, Inc. Flashlight

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE202006020378U1 (de) * 2006-05-05 2008-05-15 Zweibrüder Optoelectronics GmbH LED-Beleuchtungsmodul

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US2254962A (en) * 1937-09-22 1941-09-02 George M Cressaty Unitary lens system
US6866401B2 (en) * 2001-12-21 2005-03-15 General Electric Company Zoomable spot module
JP3708108B2 (ja) * 2004-01-13 2005-10-19 シーシーエス株式会社 光照射装置及び光学ユニット
DE202005009923U1 (de) * 2005-04-10 2005-09-22 Riggers, Wolfgang Vorrichtung zur Reduzierung von Keimen in, vorzugsweise optisch transparenten, Flüssigkeiten
DE202005007500U1 (de) * 2005-05-12 2005-07-21 Zweibrüder Optoelectronics GmbH Taschenlampe
JP2006332411A (ja) * 2005-05-27 2006-12-07 Canon Inc 発光装置、受光装置およびこれらを備えた機器
JP4376289B2 (ja) * 2005-06-01 2009-12-02 シーシーエス株式会社 光照射装置
DE202005009623U1 (de) * 2005-06-20 2006-10-26 Cooper Crouse-Hinds Gmbh Tragbare Leuchte
US7461960B2 (en) * 2006-05-05 2008-12-09 Zweibruder Optoelectronics LED illumination module
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TWM345186U (en) * 2008-07-01 2008-11-21 Genius Electronic Optical Co Ltd Focusing lamp
IT1391091B1 (it) * 2008-07-15 2011-11-18 Fraen Corp Srl Dispositivo di illuminazione a fascio luminoso regolabile, in particolare per una torcia elettrica
JP5254744B2 (ja) * 2008-10-31 2013-08-07 株式会社エンプラス 照明用レンズおよびこれを備えた照明装置
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Publication number Priority date Publication date Assignee Title
DE202006020378U1 (de) * 2006-05-05 2008-05-15 Zweibrüder Optoelectronics GmbH LED-Beleuchtungsmodul

Also Published As

Publication number Publication date
US8770783B2 (en) 2014-07-08
WO2012010153A2 (fr) 2012-01-26
WO2012010153A3 (fr) 2012-06-07
AU2011282009A1 (en) 2013-01-17
AU2011282009B2 (en) 2015-02-12
US20130107509A1 (en) 2013-05-02
DE102010027326A1 (de) 2012-01-19
DE102010027326B4 (de) 2020-08-13
JP2013531347A (ja) 2013-08-01
JP5795063B2 (ja) 2015-10-14
EP2593711A2 (fr) 2013-05-22
CN103026122A (zh) 2013-04-03

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