EP0157355A2 - Lampe de poche - Google Patents

Lampe de poche Download PDF

Info

Publication number
EP0157355A2
EP0157355A2 EP85103644A EP85103644A EP0157355A2 EP 0157355 A2 EP0157355 A2 EP 0157355A2 EP 85103644 A EP85103644 A EP 85103644A EP 85103644 A EP85103644 A EP 85103644A EP 0157355 A2 EP0157355 A2 EP 0157355A2
Authority
EP
European Patent Office
Prior art keywords
reflector part
spherical zone
aperture
lamp
elliptical
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
EP85103644A
Other languages
German (de)
English (en)
Other versions
EP0157355A3 (fr
Inventor
Rudolf Ing.(Grad.) Krieg
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0157355A2 publication Critical patent/EP0157355A2/fr
Publication of EP0157355A3 publication Critical patent/EP0157355A3/fr
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices

Definitions

  • the invention relates to a flashlight with a housing which contains a halogen lamp, a reflector and possibly a lens system, a compartment for receiving batteries or accumulators and electrical connections and at least one switch for switching the halogen lamp on and off.
  • halogen incandescent lamps also opens up a new area of application, because with the help of flashlights equipped in this way, signals that are clearly visible over long distances can be given or striking points or signs can be found as pursuers do. For this it is necessary that a light cone with a small opening angle and a sharp boundary can be generated with the aid of the flashlight. However, this is not possible with the reflector and lens system previously used in these lights.
  • the aim of the invention is therefore to provide a pocket lamp with which a very bright and completely uniform illumination of the illuminated image area can be achieved.
  • the luminaire should allow strong light bundling with a sharp boundary for a spot area.
  • the spherical zone-shaped reflector part attached in front of the elliptical reflector part in the direction of radiation causes rays that are not detected by the elliptical reflector part or are misaligned due to the non-punctiform radiation source or due to imaging errors to be reflected back into the elliptical reflector part. Loss of luminous flux is largely prevented.
  • the use of an aspherical converging lens largely prevents erroneous imaging of the diaphragm, as would be caused by a conventional biconvex lens.
  • the pinhole ensures a sharp limitation of the emitted light cone.
  • the reflector and lens system produces a bundle of rays with a sharp boundary, the illuminated image area of which has an illuminance that is completely constant over the area.
  • the flashlight has an opaque pinhole with an adjustable aperture between the spherical zone-shaped reflector part and the aspherical converging lens in the second focal point of the ellipse on which the elliptical reflector part is based.
  • the exit angle of the beam can be varied and thus illuminated image areas of different sizes can be generated (flood spot).
  • the perforated screen can also consist of transparent plastic, the aperture opening being surrounded by an opaque circular ring which forms a unit with the transparent plastic of the perforated screen.
  • a diaphragm constructed in this way can be used to axially shift it to achieve both spot-like image areas with a sharp boundary and more extensive image areas with a continuous decrease in illumination towards the edge of the image area.
  • the image area is sharply delimited if the light cone generated by the lamp with the aid of the reflector only falls on the hole in the diaphragm and a part of the opaque circular ring.
  • the cone of light strikes the transparent plastic material outside the opaque circular ring by correspondingly shifting the diaphragm, the sharp boundary of the image surface is additionally illuminated and blurred towards the edge by a continuous decrease in the illumination of the image surface.
  • the spherical zone-shaped reflector part is advantageously firmly connected to the elliptical reflector part.
  • the elliptical reflector part, the spherical zone-shaped reflector part, the aspherical converging lens and the The edges of the perforated panel are fastened in a lamp head comprising these parts.
  • the type of attachment depends on both the design of the parts and the materials used.
  • a cylindrical lamp head is particularly suitable for accommodating the reflector and lens system.
  • a preferred embodiment of the flashlight 1 is shown, whose cylindrical housing 2 made of plastic has a height of approximately 180 mm and a diameter of approximately 40 mm.
  • the housing 2 is divided into a lamp body 4 and a lamp head 5 which is rotatable relative to the lamp body 4.
  • the lamp body 4 At its end facing the lamp head 5, the lamp body 4 has a lamp holder 6 which is connected to the housing of the lamp body 4 via a holder 7.
  • Behind the lamp holder 6 is a compartment 8 for receiving batteries or accumulators, which is accessible through a cover 9 at the rear end of the fuselage 4.
  • a magnet 10 is also embedded in the form of a circular ring, which enables the flashlight 1 to be attached to metallic parts.
  • the halogen bulb 11 inserted into the lamp holder 6 is located with its lamp bulb in an elliptical reflector part 12 with an opening diameter of approximately 30 mm, which is fastened in the rear part of the lamp head 5.
  • the elliptical reflector part 12 is firmly connected to a - in the radiation direction - attached in front of it spherical reflector part 13 with a radius of 15 mm.
  • a perforated diaphragm 14 with an adjustable diaphragm opening 15 is arranged in the second focal point of the ellipse on which the elliptical reflector part 12 is based.
  • the lamp head 5 is closed in the direction of radiation by an aspherical converging lens 16 which has a focal length of 29 mm.
  • the halogen incandescent lamp 11 is switched on via a switching mechanism (not shown), light cones of different sizes being generated in three latching positions.
  • first latching position spot
  • second latching position Flood I
  • Flood II third latching position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Stroboscope Apparatuses (AREA)
EP85103644A 1984-04-03 1985-03-27 Lampe de poche Ceased EP0157355A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3412476 1984-04-03
DE19843412476 DE3412476A1 (de) 1984-04-03 1984-04-03 Taschenleuchte

Publications (2)

Publication Number Publication Date
EP0157355A2 true EP0157355A2 (fr) 1985-10-09
EP0157355A3 EP0157355A3 (fr) 1988-06-08

Family

ID=6232534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103644A Ceased EP0157355A3 (fr) 1984-04-03 1985-03-27 Lampe de poche

Country Status (3)

Country Link
US (1) US4605994A (fr)
EP (1) EP0157355A3 (fr)
DE (1) DE3412476A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856218A (en) * 1986-12-12 1989-08-15 Laser Products Corporation Light beam assisted aiming of firearms
US4916588A (en) * 1988-08-01 1990-04-10 Akron Industrial Limited A flashlight with focus and switch control
US4926299A (en) * 1989-05-30 1990-05-15 Gilson Warren E Portable flashlight
US5459649A (en) * 1991-04-10 1995-10-17 Ellion; M. Edmund Flashlight with an enhanced spot beam and a fully illuminated broad beam
US5424927A (en) * 1991-06-27 1995-06-13 Rayovac Corporation Electro-optic flashlight electro-optically controlling the emitted light
US5426308A (en) * 1993-05-28 1995-06-20 Lesco, Inc. Ultraviolet curing device having movable reflector
US5816688A (en) * 1996-09-20 1998-10-06 Shui-Shang; Chen Multi-functional lighting apparatus
WO1998026210A1 (fr) * 1996-12-09 1998-06-18 Serigraph, Inc. Projecteur de diapositives amovible pour lampe de poche
US6454433B1 (en) 2001-05-24 2002-09-24 Eveready Battery Company, Inc. Dual faceted reflector
US6893141B2 (en) * 2002-03-29 2005-05-17 Pat Y. Mah Faraday flashlight
US6729744B2 (en) 2002-03-29 2004-05-04 Pat Y. Mah Faraday flashlight
US7152995B2 (en) * 2003-03-25 2006-12-26 Chapman/Leonard Enterprises, Inc. Flashlight
US7396141B2 (en) * 2003-03-25 2008-07-08 Chapman/Leonard Enterprises, Inc. LED push rod flashlight
US20050174782A1 (en) * 2003-03-25 2005-08-11 Chapman Leonard T. Flashlight
US20040190286A1 (en) * 2003-03-25 2004-09-30 Chapman Leonard T. Flashlight
US7147343B2 (en) * 2003-03-25 2006-12-12 Chapman/Leonard Studio Equipment Flashlight
US6959999B2 (en) * 2003-11-20 2005-11-01 Wen Sung Lee Flashlight having manual charging device
US20090059590A1 (en) * 2007-08-29 2009-03-05 Quattrini Jr Richard J Portable surface skimming illumination device for locating small items on a planar surface
US7736009B2 (en) * 2007-08-30 2010-06-15 Quattrini Richard J Dustpan with integral illumination source
US7736008B2 (en) * 2007-08-30 2010-06-15 Quattrini Jr Richard J Dustpan with an integrated illumination source
CN101769509B (zh) * 2009-01-07 2011-11-30 海洋王照明科技股份有限公司 聚泛光led灯
WO2022135311A1 (fr) * 2020-12-25 2022-06-30 欧普照明股份有限公司 Système optique et projecteur

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639631C (de) * 1936-12-09 Ludwig Gerl Elektrische Taschenlampe beliebiger Form
US2338078A (en) * 1940-07-11 1943-12-28 Blake Mfg Corp Flashlight
US2361480A (en) * 1942-12-04 1944-10-31 David P Joffo Illuminating device
US2855499A (en) * 1956-09-26 1958-10-07 Henry Wedemeyer Flashlight
US2949530A (en) * 1957-03-22 1960-08-16 Electric Storage Battery Co Flashlight
US3371202A (en) * 1966-07-21 1968-02-27 Wech Allyn Inc Medical headlight
US4398238A (en) * 1981-12-04 1983-08-09 Kel-Lite Industries, Inc. Variable focus flashlight
DE3212541C2 (de) * 1982-04-03 1985-05-23 Mitralux International AG, Basel Handleuchte zur Verwendung an explosionsgefährdeten Orten

Also Published As

Publication number Publication date
DE3412476A1 (de) 1985-10-03
EP0157355A3 (fr) 1988-06-08
US4605994A (en) 1986-08-12

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Inventor name: KRIEG, RUDOLF, ING.(GRAD.)