EP2031295A1 - Eclairage d'examen médical, en particulier dentaire - Google Patents

Eclairage d'examen médical, en particulier dentaire Download PDF

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Publication number
EP2031295A1
EP2031295A1 EP07115251A EP07115251A EP2031295A1 EP 2031295 A1 EP2031295 A1 EP 2031295A1 EP 07115251 A EP07115251 A EP 07115251A EP 07115251 A EP07115251 A EP 07115251A EP 2031295 A1 EP2031295 A1 EP 2031295A1
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EP
European Patent Office
Prior art keywords
light
diodes
treatment
emitting diodes
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Withdrawn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
EP07115251A
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German (de)
English (en)
Inventor
Guido Perrelet
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.)
Asetronics AG
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Asetronics AG
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 Asetronics AG filed Critical Asetronics AG
Priority to EP07115251A priority Critical patent/EP2031295A1/fr
Publication of EP2031295A1 publication Critical patent/EP2031295A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/12—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of slot type
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight
    • 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
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/202—Lighting for medical use for dentistry
    • 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 invention relates to a light emitting diodes equipped medical, especially dental treatment light according to the preamble of claim 1.
  • the invention relates to a dental treatment light which operates according to the requirements defined in [1], European Standard EN ISO 9680 of February 1996.
  • the illuminance of the treatment light should be 8,000 lux to 15,000 lux.
  • the maximum light field must be in a circle of 50 mm, in which circle the illuminance must never fall below 75% of the maximum illuminance.
  • the lighting must reduce its intensity according to the limit values continuously and evenly to the light edge.
  • the illuminance at a distance of 60 mm above a line parallel to a horizontal line through the light field with maximum illuminance shall not exceed 1200 lux.
  • the light emitted by the dental treatment light must have a color temperature between 3600 K and 6500 K at 15'000 lux at the origin of the target coordinates.
  • a dental treatment light of this kind is in [2], DE 100 34 594 A1 described.
  • This treatment light has as a light source a plurality of LEDs arranged adjacent to each other (LED).
  • the LEDs are arranged on a common, for example, square board.
  • Each light-emitting diode or each group of a plurality of light-emitting diodes is assigned an optical component for aligning the beam path with the light field, whereby a light field with precisely defined properties can be produced.
  • the light emitting diodes can be individually aligned on a planar board towards the light field or the board can be curved.
  • the flat treatment light described in [2] occupies a relatively large amount of space, which is sparse in the workspace of the dentist and his assistant.
  • the described alignment of the LEDs on a flat board is associated with considerable effort.
  • the installation of LEDs on a curved board is also not feasible with little effort.
  • the alternatively usable optical means for aligning the beam path must be calculated and manufactured specifically for the treatment light, which is also associated with high costs. Due to the flat design
  • the treatment light in which, for example, a square board is provided, also often results in the problem that the dentist or his assistant during the conduct of manipulation in the radiation area of the treatment light device and thereby significantly affects the specified in [1] light field.
  • the present invention is therefore based on the object to provide an improved medical, especially dental treatment light.
  • a dental treatment light is to create that takes up little space and thereby the Dentist and his assistant are not disabled in the treatment of the patient.
  • the light field generated by the treatment light can not or hardly be affected any more by movements of the dentist or his assistant, and corresponding adjustments of the treatment light can be dispensed with.
  • the treatment lamp provided in particular for the dental application has light-emitting diodes for generating a light field whose specifications, such as size, illuminance, intensity profile and color temperature are defined, for example, in [1].
  • a plate-shaped carrier element is provided with a continuously or stepwise inwardly curved mounting surface along which the light-emitting diodes are arranged in at least one row, so that each LED or group of mutually corresponding light emitting diodes of the row is aligned at a different angle to the light field.
  • the mounting surface preferably follows the course of a parabola or forms a segment of a parabolic mirror, which preferably has a width in a range of 2 cm - 8 cm.
  • the light-emitting diodes or groups of light-emitting diodes are arranged linearly in one or preferably two to three rows or offset by a few millimeters or centimeters.
  • the row or each of the rows preferably has about 8 to 16, preferably 12 LEDs.
  • the light-emitting diodes by means of a control unit can be connected or disconnected and / or controlled as a whole or individually.
  • methods of pulse width modulation are used to adjust the illuminance of the LEDs.
  • the use of the pulse width modulation is particularly advantageous because it was surprisingly found that no significant changes in color temperature occur with corresponding changes in illuminance.
  • white light diodes and / or color light diodes are used, which are switched and / or controlled accordingly.
  • white light diodes are preferably supplemented with colored light diodes.
  • 5-10 white light diodes are supplemented with a red light diode and a green light diode. This measure can produce white light with a color rendering index well above 90.
  • white-emitting light-emitting diodes In order to produce white-emitting light-emitting diodes, one combines either several LED chips of different colors in a common LED housing and mixes the different color components to white light (RGB addition) or you provide a blue LED with an internal luminous layer that part of the blue light in light converts other color to produce all spectral components that form the basis for white light (color conversion).
  • the desired white light can be achieved for example by means of color conversion by the potting compound is mixed with phosphorus, a color conversion pigment.
  • the inventive treatment light is not limited to certain LED technologies.
  • control unit is designed such that at least two different white light values can be set by controlling the white light diodes and / or colored light diodes. This allows the dentist to choose white light values within the specifications according to his personal preferences.
  • white light diodes and color light diodes are provided which each serve alone or in combination the generation of white light and which are selectively switched on and off by means of the control unit.
  • the user can thus optionally determine that the white light is generated either with the white light diodes, with the colored light diodes or with a combination of white light diodes and color light diodes.
  • This has significant benefits that are used in a variety of activities of the physician, for example, the dentist or the surgeon. If radiation with a high color rendering index Ra, for example Ra> 85, is required, for example in order to be able to better recognize the contours of colored fabric, white light diodes in combination with colored light diodes are preferably switched on.
  • the user accepts the possible formation of color shadows, which are caused by the radiation of the colored light diodes. If, on the other hand, optimal shadowing suppression is to be achieved, then the colored light diodes will become switched off and operated only the white light diodes, which typically radiation with a reduced color rendering index Ra, eg Ra ⁇ 85, occurs. In this way it is possible for the user to set the optimal light for his respective activities.
  • Ra color rendering index
  • the plate-shaped support member is a curved flat bar, with an arc length l and a width b, which are chosen such that a ratio of arc length l to width b of at least 4: 1, preferably about 8: 1, or greater results ,
  • the structure of the treatment lamp according to the invention has numerous advantages.
  • the structure of the treatment light is very narrow, which takes up little space.
  • the range of motion of the dentist and his assistant is hardly limited, which is why even changes in position of the treatment light during the treatment of a patient normally omitted.
  • the outlet opening of the treatment light, from which the radiation is thrown onto the light field, is also very narrow, which is why within the defined light field with high efficiency, the desired light intensity is achieved.
  • a significant reduction of the illuminance is achieved outside of the standardized light field, so that the standard requirements are exceeded or the incidence of light at eye level of the patient is substantially reduced.
  • Each light-emitting diode or group of light-emitting diodes which have the same radiation angle is assigned an optical element which focuses the emitted beams and / or aligns them with the light field.
  • lenses, optionally also mirrors are provided.
  • each optical element with an associated light-emitting diode forms a unit, wherein the optical element is preferably a glass or plastic lens glued or welded to the light-emitting diode.
  • the optical element is preferably a glass or plastic lens glued or welded to the light-emitting diode.
  • white light LEDs or white light LED groups are installed, which have already been provided by the supplier with a suitable lens.
  • the light-emitting diodes are arranged on an insulated metal substrate or segments thereof, the metal substrate being connected to the preferably metal carrier element, preferably glued by means of a thermally highly conductive adhesive.
  • the light-emitting diodes are arranged above the metal substrate or in depressions of the metal substrate, which are preferably reflector-like.
  • the body or the housing of the light-emitting diodes can be thermally coupled well-conductively to the metal substrate, for example by means of a good thermal conductive adhesive, while the electrical contacts of the LEDs are connected to the arranged on an insulating layer of electrical conductors.
  • the insulating layer and the conductor tracks are preferably guided into the depressions, wherein the conductor tracks can form reflector elements.
  • the insulated metal substrate may be integrally formed and bent by bending the metal substrate to the Mounting surface of the support element can be adjusted. This results in a large-area contact and an excellent heat transfer between the metal substrate and the carrier element.
  • the insulated metal substrate may also have a plurality of partially or completely separate metal segments, which are interconnected, for example, only by the insulating layer and the electrical conductor tracks.
  • the individual metal segments can also be adapted by bending to the mounting surface of the support element. It is particularly advantageous, however, if the mounting surface is divided into individual, mutually inclined segments or sub-surfaces on which the light-emitting diodes, or provided with the light emitting diode circuit modules or insulated Mchevausubstrate can be placed without further manipulation is necessary.
  • the carrier element is connected to a light-guiding unit through which the radiation emitted by the light-emitting diodes passes and is limited in its radiation angle to the specified light field.
  • the light-guiding unit thus permits the use of light-emitting diodes and optical systems which have a directional characteristic by means of which compliance with the specifications given in [1] is not otherwise possible.
  • the light-guiding unit limits the opening angle of the treatment light and prevents the emission of disturbing stray light.
  • the light-directing unit preferably forms a shaft which has an outlet opening selected in accordance with the specified light field, for example a narrow outlet slot.
  • the light-directing unit ensures that the specifications of the light field and ensure that the incident light at eye level of the patient is kept well below the specified value.
  • the shaft-shaped light-directing unit which is made, for example, of light metal or plastic, has a cross-section corresponding to the carrier element on the upper side, so that the light-guiding unit can be pushed over the carrier element and bolted thereto.
  • At the bottom of the shaft-shaped support member is preferably tapered and optionally provided with adjusting elements, which allow to further change the light field.
  • reflective eyelids, diaphragms, filters, sliders or diaphragms are optionally provided, which allow the dentist to specifically align or limit the radiation. For example, it can be prevented that a very sensitive patient is disturbed.
  • a shaft-shaped light-guiding unit which consists of optical elements by means of which the light is detected early and precisely directed.
  • a light-guiding unit can therefore be constructed with small geometrical dimensions.
  • plates are used which are aligned parallel to each other and parallel to the main radiation axis of the treatment light. The radiation emerging from the light-emitting diodes is therefore detected early and guided between the plates and / or within the plates towards the light field.
  • the refractive index is preferably chosen such that radiation which, due to the high entrance angle, could not enter the light field due to reflection on the outer walls of the plates, can penetrate into the plates and be guided into the light field.
  • the non-transparent plates are preferably provided with a surface structure which directs the incident radiation and / or divides it into partial radiation and thereby prevents larger radiation beams from arriving outside the specified light field.
  • the inventive treatment light can be manufactured in numerous different configurations and designs. Furthermore, the treatment light can be connected to any support devices which preferably allow the treatment light to be positioned and aligned as desired.
  • the carrier element is connected via a coupling element with a preferably rotatable and pivotable mounting arm.
  • FIG. 1 shows an inventive, preferably provided for use by the dentist treatment light 1, by means of which a light field A, B is generated, as specified in [1] and was explained in the introduction.
  • the treatment light 1 has a carrier element 11, on the underside of which at least one row 150 of light-emitting diodes 15 is provided, which are aligned with the light field A, B.
  • a coupling element 19 is provided, which is connected to a support device 9, for example a preferably rotatable and pivotable mounting arm 9, which allows the treatment light 1 to position and align arbitrarily.
  • support member 11 has on its underside a stepwise inwardly curved mounting surface 110, which mutually inclined faces 111, 112, ..., on which a light emitting diode 15 and / or a group of light emitting diodes 15 (so-called LED cluster), the preferably all parallel radiation axes have, is arranged.
  • the radiation axes x 15 of the light-emitting diode 15 or the groups of light-emitting diodes 15 and the main axis x of the treatment light 1 each include an angle a, b,..., which are graduated against one another according to the course of the mounting surface 110.
  • the inventive treatment light 1 can be used advantageously in this area.
  • the LEDs are by means of which in FIG. 1 shown control unit 6 as a whole or individually switched on or off and / or controllable.
  • methods of pulse width modulation are used to adjust the illuminance of the LEDs.
  • the illuminance can be changed without changes in the color temperature occur.
  • enough light emitting diodes 15 should be present and switched such that no other changes of the light field A, B occur.
  • individual LEDs 15 are connected, which are arranged equidistantly on the mounting surface.
  • an entire row 150 X of LEDs 15 is switched on or off.
  • white light diodes and / or color light diodes are used, which are switched and / or controlled accordingly.
  • a group of colored light diodes is provided on each partial surface 111, 112,..., Whose radiations complement each other by color addition to white light.
  • control unit 6 is configured such that at least two different white light values W1, W2, W3 can be set by controlling the white light diodes and / or color light diodes.
  • the desired white light values W1, W2, W3 and the desired illuminance L1,..., L5 can be set in the control unit 6 by pressing a button.
  • a power supply unit is preferably provided in the control unit 6.
  • white light diodes and color light diodes are provided which each serve alone or in combination the generation of white light and by means of the control unit 6 (see the switch CRI) optionally switched on and off are.
  • white light diodes in combination with appropriately selected color light diodes are switched on in a first operating mode.
  • the color light diodes are isolated or turned off altogether by actuation of the switch CRI in a second operating mode, with a slight reduction of the color rendering index which is not troublesome in many applications and activities.
  • the radiation intensity of the colored light diodes can be reduced, for example, according to a specified profile.
  • the user can thus optionally benefit from the advantages of white light radiation described above, which is generated either by the white light diodes or by white light diodes in combination with color light diodes, or optionally only by color light diodes.
  • white light radiation generated either by the white light diodes or by white light diodes in combination with color light diodes, or optionally only by color light diodes.
  • a reduction or complete avoidance of color shadows is sought.
  • a high color rendering index is desired.
  • a series of white light diodes 150 is provided, each one being shown
  • White light diode 150 for example, a chip or a cluster of white light diodes
  • color light diodes 151 are assigned, which are optionally switched on or off.
  • color light diodes 151 are arranged in a circle concentric with the white light diodes 150, so that no disturbing changes in the light field are perceptible when switching the white light.
  • each optical element with a corresponding light-emitting diode 15 forms a unit, so that commercially available units can be used cost-effectively.
  • the optical element 16 is preferably a glass or plastic lens glued or welded to the light-emitting diode 15.
  • an optical system can be used, which is connected separately from the light-emitting diodes 15, for example with the carrier element 11.
  • a shaft-shaped light-guiding unit 12 is provided.
  • the light-guiding unit 12 connected at the top to the carrier element 11 has an outlet opening 121 at the bottom thereof, through which the radiations emitted by the light-emitting diodes 15 are thrown onto the light field A, B.
  • the outlet opening 121 is designed slit-like and extends with a length l 121 almost over the entire underside of the light-guiding unit 12.
  • the width b 12 of The light-directing unit 12, which is tapered towards the outlet opening 121, corresponds approximately to the width b 11 of the carrier element 11.
  • the height of the light-directing unit 12 is approximately 2/3 of the arc length 11 of the carrier element 11.
  • the light-directing unit 12 forms the housing of the treatment lamp 1, resulting in a simple structure.
  • FIG. 2 shows a cross section through an inventive treatment lamp 1 in a preferred embodiment. It is shown that the light emitting diodes 15 are arranged on a conductor system 17, such as a printed circuit board, a printed circuit, or an insulated metal substrate (known as IMS: Insulated Metal Substrate), which in turn connected to the mounting surface 110 of the support member 11, preferably is glued by means of a thermally conductive adhesive.
  • a conductor system 17 such as a printed circuit board, a printed circuit, or an insulated metal substrate (known as IMS: Insulated Metal Substrate), which in turn connected to the mounting surface 110 of the support member 11, preferably is glued by means of a thermally conductive adhesive.
  • IMS Insulated Metal Substrate
  • the light-emitting diode 15 is provided with an optical element 16 which focuses the radiation emitted by the light-emitting diode 15.
  • Stray light is preferably attenuated and diffused at the inner walls of the light-directing unit 12.
  • the inner walls of the light-guiding unit 12 are therefore preferably of black color and preferably have a corresponding surface finish.
  • the outlet opening 121 can be provided with elements 122, such as slides, shutters, lids, filters, etc., which are preferably variably adjustable.
  • FIG. 3 shows an inventive treatment lamp 1, which is provided with a light-guiding unit 12, which a plurality of parallel aligned, by means of a Mounting bracket 182 mounted plates 181 which direct the radiation emitted by the LEDs 15 radiation and lead.
  • the radiation is detected early and narrow, so that the desired orientation of the radiation is reached after a short distance.
  • the length of the light-guiding unit 12 can therefore be tightly dimensioned so that even more advantageous geometric dimensions of the treatment light 1 result than in the embodiment of FIG. 2 ,
  • FIGS. 5a and 5b Examples of the plates 181 provided for this light-guiding unit 12 are shown in FIGS FIGS. 5a and 5b shown.
  • transparent plates 181 such as glass or plastic plates, are shown, which reflect radiation incident at an acute angle and allow radiation incident at an obtuse angle to pass in the manner of an optical waveguide and exit at the underside.
  • the entrance angle can also be influenced by a corresponding surface condition of the plates 181.
  • linear, perpendicular to the radiation depressions 1811 are incorporated into the plates 181.
  • the two outermost plates 181 may be provided on the outside with a non-transparent layer or foil 1812.
  • FIG. 5b shows non-transparent plates 181, which also have a surface finish, through which a diffuse reflection of the incident radiation is effected.
  • FIG. 4 shows, as already described above, a detail of an inventive treatment lamp 1 with a plate-shaped support member 11, which is a parabolic extending mounting surface 110 which is divided into mutually inclined segments or partial surfaces 111, 112, ...
  • the support member 11 has a head piece 118 which is provided with threaded holes 1181, into which mounting screws 1182 are inserted, by means of which the symbolically shown light guide unit 12 can be mounted, which also serves as a housing.
  • the light-emitting diodes 15 are arranged linearly in a row 150 on an insulated metal substrate 17 and provided with optical elements 16. It is shown symbolically that additional rows 1501 of light-emitting diodes 15 ', for example laterally offset from the first row 150, can be arranged on the insulated metal substrate 17. For example, the further row 150 1 can be selectively switched on or off to change the illuminance.
  • IMS Isolated metal substrates
  • insulated metal substrates which are equipped with light-emitting diodes and can be flexibly mounted on a support
  • the insulated metal substrate described therein consists of a metal substrate provided with a plurality of recesses, on the upper side of which an insulation layer with electrical paths is arranged, to which a plurality of light-emitting diodes optionally present in chip form and arranged within the recesses are connected.
  • the optionally coated depressions serving as reflectors are incorporated on the upper side into the metal substrate in such a way that its underside forms a flat surface which can be connected to the preferably metallic carrier which stores the heat energy emitted by the light emitting diodes and transferred through the metal substrate absorbed.
  • the insulated metal substrate 17 on the mounting surface 110 of the in FIG. 4 applied carrier element 11 is applied can be, the metal substrate is preferably flexibilized by this diluted in isolated locations or completely removed, so that only the insulating layer 171 remains with the electrical conductors 173 and optionally a thin, easily bendable layer of the metal substrate 172.
  • a thin and / or easily bendable metal metal substrate 172 may be used.
  • FIG. 6 1 shows an insulated metal substrate 1 which can be used according to the invention and which consists of an insulating layer 171 lying on a metal substrate 172, on which electrical lines 173 provided for connecting the light-emitting diodes 15 are provided.
  • the insulated metal substrate 17 has a recess 1721, in the region of which the metal substrate 172 is completely detached from the insulation layer 171, so that essentially two insulated metal substrates 17A, 17B result, which are rotated against each other and in a simple manner on the segments or partial surfaces 111, 112 , ... the mounting surface 110 of the support member 11 can be placed.
  • metal substrate 172 is completely covered with the insulating layer 171, which is also drawn into the recess 1722, which serves in this preferred embodiment of receiving a light emitting diode 15 and as a reflector. Also drawn into the recess 1722 is the metal layer 173 serving to form the electrically conductive tracks. Approximately in the center of the recess 1722, this metal layer is separated by a recess, resulting in two connection lines 173 which are electrically insulated from one another and cover the recess 1722 almost completely and form a reflector.
  • the present invention is independent of the design and placement of the insulated metal substrate 17 applicable. It is therefore also possible to use insulated metal substrates 17 in which the light-emitting diodes 15 are not arranged in depressions but in the plane of the insulation layer 171.
  • the use of the insulated metal substrate 17 in the various possible configurations results in a good transfer of the heat loss emitted by the light emitting diodes 15 via the metal substrate 172 to the carrier element 11, which are connected to one another, for example via a thermally highly conductive adhesive layer or a positive connection.
  • the temperature of the LEDs 15 thus remains largely constant during operation of the treatment lamp 1, so that disturbing changes in the color temperature can be avoided.
  • pulse width modulation changes in color temperature are largely avoided even when the illuminance is changed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP07115251A 2007-08-29 2007-08-29 Eclairage d'examen médical, en particulier dentaire Withdrawn EP2031295A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07115251A EP2031295A1 (fr) 2007-08-29 2007-08-29 Eclairage d'examen médical, en particulier dentaire

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Application Number Priority Date Filing Date Title
EP07115251A EP2031295A1 (fr) 2007-08-29 2007-08-29 Eclairage d'examen médical, en particulier dentaire

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EP2031295A1 true EP2031295A1 (fr) 2009-03-04

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008012660U1 (de) * 2008-09-25 2010-02-25 Zumtobel Lighting Gmbh Arbeitsplatzanordnung mit beleuchteter Arbeitsfläche
ITPR20100003A1 (it) * 2010-01-14 2011-07-15 Nadlec S R L Dispositivo di illuminazione a led
DE102010039308A1 (de) * 2010-08-13 2012-02-16 Zumtobel Lighting Gmbh Beleuchtungsanordnung mit verschiedenfarbigen Lichtquellen sowie Verfahren zum Betreiben einer derartigen Beleuchtungsanordnung
DE202011002947U1 (de) * 2011-02-04 2012-05-07 Wilfried Pöllet Flachbauende Leuchte
DE102011002437A1 (de) * 2011-01-04 2012-07-05 Zumtobel Lighting Gmbh Verfahren und Beleuchtungseinrichtung zur Beleuchtung eines Objektes mit mehreren Lichtquellen
CN102588833A (zh) * 2011-01-13 2012-07-18 德尔格医疗有限责任公司 带有借助于形状配合进行led取向的手术光源
EP3009736A3 (fr) * 2010-01-26 2016-05-04 KaVo Dental Technologies, LLC Lampe à diode électroluminescente pour examen dentaire amélioré
DE102016203862A1 (de) * 2016-03-09 2017-09-14 H4X E.U. Leuchte und Verfahren zur Ausleuchtung einer vorbestimmten Fläche
WO2018042086A1 (fr) * 2016-09-05 2018-03-08 Maquet Sas Dispositif d'eclairage medical avec des leds orientees par des languettes predecoupees dans une carte de circuit imprime
IT201900003525A1 (it) * 2019-03-11 2020-09-11 G Comm S R L Lampada scialitica a LED per applicazioni mediche o chirurgiche

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DE202008012660U1 (de) * 2008-09-25 2010-02-25 Zumtobel Lighting Gmbh Arbeitsplatzanordnung mit beleuchteter Arbeitsfläche
ITPR20100003A1 (it) * 2010-01-14 2011-07-15 Nadlec S R L Dispositivo di illuminazione a led
EP2345839A1 (fr) * 2010-01-14 2011-07-20 Nadlec S.r.l. Dispositif d'éclairage à LED
EP3009736A3 (fr) * 2010-01-26 2016-05-04 KaVo Dental Technologies, LLC Lampe à diode électroluminescente pour examen dentaire amélioré
DE102010039308A1 (de) * 2010-08-13 2012-02-16 Zumtobel Lighting Gmbh Beleuchtungsanordnung mit verschiedenfarbigen Lichtquellen sowie Verfahren zum Betreiben einer derartigen Beleuchtungsanordnung
DE102011002437A1 (de) * 2011-01-04 2012-07-05 Zumtobel Lighting Gmbh Verfahren und Beleuchtungseinrichtung zur Beleuchtung eines Objektes mit mehreren Lichtquellen
CN102588833A (zh) * 2011-01-13 2012-07-18 德尔格医疗有限责任公司 带有借助于形状配合进行led取向的手术光源
DE102011008474A1 (de) 2011-01-13 2012-07-19 Dräger Medical GmbH Operationsleuchte mit LED-Ausrichtung mittels Formschluss
DE102011008474B4 (de) * 2011-01-13 2012-08-09 Dräger Medical GmbH Operationsleuchte mit LED-Ausrichtung mittels Formschluss
US8366297B2 (en) 2011-01-13 2013-02-05 Dräger Medical GmbH Operating light with LED orientation by means of positive locking
CN102588833B (zh) * 2011-01-13 2014-12-10 德尔格医疗有限责任公司 带有借助于形状配合进行led取向的手术光源
DE202011002947U1 (de) * 2011-02-04 2012-05-07 Wilfried Pöllet Flachbauende Leuchte
DE102016203862A1 (de) * 2016-03-09 2017-09-14 H4X E.U. Leuchte und Verfahren zur Ausleuchtung einer vorbestimmten Fläche
WO2018042086A1 (fr) * 2016-09-05 2018-03-08 Maquet Sas Dispositif d'eclairage medical avec des leds orientees par des languettes predecoupees dans une carte de circuit imprime
FR3055688A1 (fr) * 2016-09-05 2018-03-09 Maquet Sas Dispositif d'eclairage medical avec des leds orientees par des languettes predecoupees dans une carte de circuit imprime
US10905516B2 (en) 2016-09-05 2021-02-02 Maquet Sas Medical illumination device with LEDs oriented by tabs pre-cut in a printed circuit board
IT201900003525A1 (it) * 2019-03-11 2020-09-11 G Comm S R L Lampada scialitica a LED per applicazioni mediche o chirurgiche
WO2020183381A1 (fr) * 2019-03-11 2020-09-17 G.Comm S.R.L. Lampe scialytique à del pour applications médicales ou chirurgicales

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