EP1928339A1 - Dispositif pour raser les poils d'un etre humain au moyen d'un rayonnement laser - Google Patents

Dispositif pour raser les poils d'un etre humain au moyen d'un rayonnement laser

Info

Publication number
EP1928339A1
EP1928339A1 EP05787833A EP05787833A EP1928339A1 EP 1928339 A1 EP1928339 A1 EP 1928339A1 EP 05787833 A EP05787833 A EP 05787833A EP 05787833 A EP05787833 A EP 05787833A EP 1928339 A1 EP1928339 A1 EP 1928339A1
Authority
EP
European Patent Office
Prior art keywords
optical fibers
portable unit
laser
laser light
laser radiation
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Withdrawn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
EP05787833A
Other languages
German (de)
English (en)
Inventor
Jens Meinschien
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.)
Focuslight Germany GmbH
Original Assignee
Limo Patentverwaltung GmbH and Co KG
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 Limo Patentverwaltung GmbH and Co KG filed Critical Limo Patentverwaltung GmbH and Co KG
Publication of EP1928339A1 publication Critical patent/EP1928339A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/203—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser applying laser energy to the outside of the body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B23K26/0608—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams in the same heat affected zone [HAZ]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/073—Shaping the laser spot
    • B23K26/0738—Shaping the laser spot into a linear shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00452—Skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00452—Skin
    • A61B2018/00476—Hair follicles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B2018/2205—Characteristics of fibres
    • A61B2018/2211—Plurality of fibres

Definitions

  • the present invention relates to a device for shaving a human hair according to the preamble of claim 1 and an application of this device.
  • a device of the aforementioned type is known from international patent application WO 93/05920 A1.
  • the device described therein may comprise a base station and a portable handpiece which the user may guide into the work area where hair is to be shaved off.
  • the base station and the handpiece may be interconnected via a cable comprising an optical fiber.
  • the base station houses a laser light source, the light of which passes through a series of lenses before entering the optical fiber. After emerging from the optical fiber in the handpiece, the laser radiation also passes through a plurality of lenses, in particular cylindrical lenses, so that laser radiation with a linear cross section can emerge from the handpiece for shaving human hair.
  • a disadvantage of such a device proves the complexity of the optical structure, which brings high manufacturing costs.
  • the problem underlying the present invention is the provision of a device of the type mentioned, which is less expensive to produce.
  • the ends of the optical fibers in the portable unit can be arranged substantially next to one another in a row, so that a substantially linear beam cross-section results in the overlapped state of the laser radiation.
  • This arrangement of the plurality of optical fibers thus makes it possible to create a linear beam cross section without additional cylindrical lenses or the like.
  • This arrangement of the optical fibers can be pure during the manufacture of the device Passive, that is created without laser operation, so that the production costs can be further reduced.
  • the device comprises a plurality of laser light sources, which are preferably designed as individual laser diodes or as individual emitters of a laser diode bar.
  • each of the laser light sources can be assigned exactly one optical fiber.
  • Individual laser diodes have the advantage over laser diode bars that they have a longer life and can be operated at higher Temperaturßn, so that lower requirements must be placed on the cooling.
  • an independent operation of the individual laser diodes can be selected, so that the failure of a single laser diode does not lead to defects of further laser diodes and the device can still be used anyway.
  • an optical fiber can be arranged in front of one of the laser light sources that the laser light emerging from the laser light source passes directly into the optical fiber, in particular without prior passage through optical means such as lenses or the like.
  • optical means such as lenses or the like.
  • a fast-axis collimating lens could be arranged to the Laser radiation with respect to the large divergence in the so-called fast-axis to collimate largely.
  • the transmission means comprise a flexible cable in which the optical fibers are densely packed. This results in a particularly dense and compact package when the number of optical fibers is 7 or 19 or 37.
  • the flexible cable comprises an electrical signal line and / or at least one optical waveguide for guiding visible pilot radiation.
  • the electrical signal line for example, the laser light source can be switched.
  • the pilot radiation may originate from a light emitting diode or laser diode suitable for the generation of visible light and be supplied to the portable unit through an additional optical fiber.
  • the pilot radiation may facilitate the user guidance of the laser radiation.
  • Fig. 1 is a schematic perspective view of a device according to the invention
  • FIG. 2 schematically shows the structure of an embodiment of a base unit of a device according to the invention
  • Fig. 3 shows a cross section through an embodiment of a
  • FIG. 4a shows a cross section through an embodiment of a bundle of 7 optical fibers of a device according to the invention
  • FIG. 4b shows a cross section through an embodiment of a bundle of 19 optical fibers of a device according to the invention
  • 4c shows a cross section through an exemplary embodiment of a bundle of 37 optical fibers of a device according to the invention
  • 5a shows a two-dimensional intensity distribution of the laser radiation emanating from a device according to the invention in an application plane
  • FIG. 5b shows a one-dimensional representation of the intensity distribution according to FIG. 5a
  • FIG. 5c shows a further one-dimensional representation of the intensity distribution according to FIG. 5a
  • FIG. 5b shows a one-dimensional representation of the intensity distribution according to FIG. 5a
  • FIG. 5c shows a further one-dimensional representation of the intensity distribution according to FIG. 5a
  • FIG. 5b shows a one-dimensional representation of the intensity distribution according to FIG. 5a
  • FIG. 5c shows a further one-dimensional representation of the intensity distribution according to FIG. 5a
  • a device comprises a base unit 1, a portable unit 2 and a flexible cable 3 connecting them to one another.
  • the portable unit 2 can have on one side a slot-shaped opening through which laser radiation 4 from the portable one Unit can escape.
  • This base unit 1 comprises a heat sink 5 on which a plurality of laser diodes 6 is mounted. Due to the arrangement of the laser diodes 6 on a common heat sink 5, the heat generated by the individual laser diodes 6 is distributed relatively uniformly, whereby the thermal load of the laser diodes 6 due to small temperature gradients is low.
  • the laser diodes 6 may each have an optical power of about 3 W to 8 W at an emission wavelength between 800 nm and 1000 nm.
  • a laser diode bar may be provided with a plurality of emission sources. It is also possible to provide a plurality of laser diode bars.
  • an optical fiber 7 is positioned into which the light emanating from the corresponding laser diode 6 can enter.
  • no optical means such as lenses or the like between the laser diode 6 and the input end of the optical fiber 7 are arranged in the illustrated embodiment. at the appropriate distance and appropriate positioning can still be ensured that a large part of the light emerging from the laser diode coupled into the optical fiber 7.
  • the optical fibers 7 may each have a core diameter of 100 microns and a numerical aperture of 0.22.
  • the optical fibers 7 may be metal coated to make them more flexible and increase their breaking strength over uncoated optical fibers.
  • a lens such as a fast-axis collimating lens to the divergence of the laser light exiting the laser diode 6 with respect to the direction perpendicular to the active layer before entering the optical fiber 7 at least partly to collimate.
  • the individual laser diodes 6 can be connected in series, wherein in particular means for low-ohmic bypassing of a failed laser diode 6 can be provided to ensure smooth operation of the device even in the event of failure of individual laser diodes. With this series connection of the individual laser diodes 6, substantially lower currents occur than with laser diode bars. As a result, electrical lines with smaller cross sections and simpler electronic circuits can be used.
  • the cooling supply for the laser diodes 6 may be accommodated, which is designed in particular as air cooling or cooling with Peltier elements.
  • the outgoing of the individual laser diodes 6 optical fibers 7 are combined into a bundle and are part of the flexible cable 3, which connects the base unit 1 with the portable unit 2.
  • the cable 3 can continue electrical signal lines, for example, be added to the circuit or control of the laser diode 6.
  • the cable 3 may comprise one or more optical fibers for guiding visible pilot radiation. This pilot radiation can emanate from a laser diode or light-emitting diode provided in the base unit, which emits light in the visible region of the spectrum. The pilot radiation can make it clear to the user which course the laser radiation takes after exiting the portable unit 2.
  • FIG. 3 is a detail of an embodiment of a portable unit 2 can be seen.
  • this embodiment comprises a holding part 8 with a plurality of V-shaped grooves 9.
  • one of the optical fibers 7 is arranged.
  • the optical fibers 7 are held in the grooves 9 by a plate 10 which rests on the side facing away from the grooves 9 side of the optical fibers 7 to these and is connected, for example, with the holding part 8.
  • the portable unit 2 may comprise a transparent to the laser radiation 4 protective window, which can protect the ends of the optical fibers 7 against external influences.
  • the portable unit 2 may be hermetically sealed against moisture and the like.
  • the distance between the lower ends of the grooves 9 to each other may be between 0.5 mm and 5 mm, in particular about 1 mm.
  • the distance between the axes of the optical fibers 7 to each other can thus also be about 1 mm.
  • the laser light emerging from the individual optical fibers 7 already overlaps one another shortly after the end of the optical fibers 7.
  • Fig. 5a is two-dimensional the Intensity distribution of the overlapped laser radiation is shown at a distance of 3 mm behind the end of the optical fibers 7. Darker areas correspond to a higher intensity than brighter areas.
  • FIGS. 5b and 5c the intensities of the laser radiation are respectively plotted against a location coordinate X or Y, the directions X and Y being perpendicular to one another.
  • Fig. 5b clearly shows that the intensity differences between the darker points in Fig. 5a, which can be assigned to the cores of the individual optical fibers 7, and the brighter transitional or overlapping areas are present but not very pronounced.
  • a sufficient homogeneity of the linear overlapping laser radiation for shaving human hair can be ensured.
  • the mechanical tolerance requirements to the holding part 8 are very low, since the intensity distribution of the overlapped laser radiation is only insignificantly influenced by a slight change in the distance of the optical fibers 7 to each other. Accordingly, the portable unit 2 is due to the large mechanical tolerances of the holding part 8 largely unaffected by external mechanical or thermal influences. This robustness of the portable unit 2 is enhanced by the protective window and the hermetic seal of the portable unit 2.
  • FIG. 4 a shows the exemplary arrangement of 7 optical fibers 7
  • FIG. 4 b shows the exemplary arrangement of 19 optical fibers 7
  • FIG. 4 c shows the exemplary arrangement of 37 optical fibers 7 in a bundle of optical fibers.
  • the numbers mentioned above Optical fibers 7 each allow a very compact arrangement of the optical waveguide 7 in the bundle.

Abstract

La présente invention concerne un dispositif pour raser les poils d'un être humain au moyen d'un rayonnement laser (4), le dispositif comprenant une unité de base (1) qui comprend au moins une source de lumière laser, une unité portative (2) qui peut être mise en place par un utilisateur dans la zone des poils à couper, et un système de transmission qui comprend une pluralité de fibres optiques (7) qui peuvent transmettre le rayonnement laser émis par la/les source(s) de lumière laser, de l'unité de base (1) à l'unité portative (2), les extrémités des fibres optiques (7) étant disposées dans l'unité portative (2) de sorte que le rayonnement laser (4) qui sort de ces extrémités, peut se recouvrir au moins partiellement, et a une section de faisceau linéaire lors du recouvrement.
EP05787833A 2005-09-19 2005-09-19 Dispositif pour raser les poils d'un etre humain au moyen d'un rayonnement laser Withdrawn EP1928339A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/010079 WO2007033687A1 (fr) 2005-09-19 2005-09-19 Dispositif pour raser les poils d'un etre humain au moyen d'un rayonnement laser

Publications (1)

Publication Number Publication Date
EP1928339A1 true EP1928339A1 (fr) 2008-06-11

Family

ID=35999483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05787833A Withdrawn EP1928339A1 (fr) 2005-09-19 2005-09-19 Dispositif pour raser les poils d'un etre humain au moyen d'un rayonnement laser

Country Status (5)

Country Link
US (1) US20080201954A1 (fr)
EP (1) EP1928339A1 (fr)
JP (1) JP2009508689A (fr)
CN (1) CN101321502A (fr)
WO (1) WO2007033687A1 (fr)

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US20080244912A1 (en) * 2007-03-16 2008-10-09 Morgan Lars Ake Gustavsson Optical Shaving Apparatus
US8858229B2 (en) 2007-08-27 2014-10-14 Morgan Gustavsson Volume emitter
RU2497478C2 (ru) * 2008-03-21 2013-11-10 Конинклейке Филипс Электроникс Н.В. Система и способ для удаления волос
BR112014014921A2 (pt) * 2011-12-22 2017-06-13 Koninklijke Philips Nv dispositivo de corte de pelos
EP2656982A1 (fr) * 2012-04-27 2013-10-30 Koninklijke Philips N.V. Dispositif pour couper les cheveux
WO2014108783A1 (fr) * 2013-01-10 2014-07-17 Koninklijke Philips N.V. Tête coupante pour un dispositif pour couper les cheveux
US9017322B2 (en) 2013-03-15 2015-04-28 Morgan Lars Ake Gustavsson Laser shaving
US10105182B2 (en) 2013-03-15 2018-10-23 Skarp Technologies (Delaware) Inc. Laser shaving
US10307867B2 (en) 2014-11-05 2019-06-04 Asm Technology Singapore Pte Ltd Laser fiber array for singulating semiconductor wafers

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Also Published As

Publication number Publication date
JP2009508689A (ja) 2009-03-05
CN101321502A (zh) 2008-12-10
WO2007033687A1 (fr) 2007-03-29
US20080201954A1 (en) 2008-08-28

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