EP2592906A1 - Operating unit having display - Google Patents

Operating unit having display Download PDF

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Publication number
EP2592906A1
EP2592906A1 EP11008993.5A EP11008993A EP2592906A1 EP 2592906 A1 EP2592906 A1 EP 2592906A1 EP 11008993 A EP11008993 A EP 11008993A EP 2592906 A1 EP2592906 A1 EP 2592906A1
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EP
European Patent Office
Prior art keywords
light
operating unit
representation
screen
unit according
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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.)
Granted
Application number
EP11008993.5A
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German (de)
French (fr)
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EP2592906B1 (en
Inventor
Alexander Stoffel
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Berchtold GmbH and Co KG
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Berchtold Holding GmbH
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Priority to EP20110008993 priority Critical patent/EP2592906B1/en
Priority to US13/673,884 priority patent/US20130200804A1/en
Publication of EP2592906A1 publication Critical patent/EP2592906A1/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • 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
    • F21W2131/205—Lighting for medical use for operating theatres

Definitions

  • the present invention relates to an operating unit for a medical lamp, in particular for a surgical lamp or examination lamp, with at least one operating element for adjusting the size of a light field generated by the lamp at a predetermined location and an electronic interface for outputting control signals for the size of the light field to a control device of the lamp.
  • the light field size of a medical lamp must be adapted to the respective situation during each operation or examination.
  • knowledge of the currently set light field size is advantageous, e.g. be able to estimate the remaining margin of freedom up or down.
  • an operating unit comprises a screen for displaying the currently set size of the light field and is configured to display a representation of at least one lamp body of the lamp including a light cone emanating from the lamp body on the screen during operation of the lamp and adjusting the size of the light field to change the shape of the light cone in the representation accordingly by means of the control element.
  • the screen thus serves, on the one hand, to directly display the light field size and is additionally used to model the lamp body and graphically follow the light field adjustments made by an operator in this illustration. Due to the changing of the light cone screen display in synchronism with the light field adjustment, an operator can capture the current light field size much faster and more intuitively than is possible exclusively by means of numerical value or scale displays. In particular, it is possible to quickly and easily determine at which point in the range of possible light field sizes is the current setting. The operator is thus distracted to a lesser extent from the actual operation or investigation task, which is particularly important in difficult medical activities of great importance.
  • the operating unit is designed to change the shape of the light cone in the representation in real time during each adjustment process. This facilitates the operation of the lamp in particular. For example, Adjustments of the light field size can be made under observation of the representation on a trial basis.
  • the representation of the lamp body and the light cone fills at least 40%, preferably at least 50% and particularly preferably at least 70% of the total visible height and / or the entire visible width of the screen.
  • the largest possible representation of the luminaire body and the light cone on the available screen surface ensures good visibility. In particular, an operator can easily recognize a large format image even from a distance away from the control unit and under stress conditions.
  • a purely symbolic representation e.g. In the form of an "icon"
  • a larger image on the screen gives a realistic and quickly comprehensible impression of the state of the "real" light cone of the luminaire.
  • the representation of the lamp body and the light cone may be in particular perspective. This further enhances the recognizability of the display and contributes to an improved assessment of the light field size on the basis of the screen display.
  • a light field can additionally be reproduced, wherein the operating unit is designed to correspondingly change the size of the light field in the representation when the size of the light field is adjusted by means of the operating element.
  • An embodiment of the invention provides that the screen is touch-sensitive and the operating element is integrated in the screen.
  • the screen can be designed as a touchscreen.
  • the control element can be combined in this embodiment with the representation of the lamp body and the light cone.
  • the operating element can be superimposed on the illustration of the luminaire body and the light cone.
  • the representation may thus be e.g. extend as a background image over a substantial part of the screen surface, while a control panel forming the touch screen is arranged in the foreground. This offers the advantage of a favorable utilization of the available screen area.
  • the operating unit can also comprise an operating element for adjusting the brightness of a light source of the luminaire, wherein the operating unit is designed to correspondingly change the brightness of the light cone in the display on the screen when the brightness of the light source is adjusted. For an operator, it may in fact be much easier to reconstruct a change in brightness on the light cone shown than in the real operation or examination field.
  • the operating unit may comprise an operating element for adjusting the color temperature of a light source of the luminaire, wherein the operating unit is designed to adjust the color tone of the light cone in the illustration on the screen when the color temperature of the light source is adjusted Screen change. Since the color temperature of a light source can be correlated with the color tones that can be displayed on a screen, this embodiment also enables an operator to quickly and intuitively detect the color temperature influence by the operating unit.
  • an increase in color temperature from a minimum value to a maximum value is correlated with a change in hue of the light cone in the on-screen representation from orange to yellow to white.
  • a color temperature of the light source of 4500 K in the representation of the light cone corresponds to a white hue.
  • An operator can then detect and assess color temperature changes particularly quickly because low color temperatures are usually associated with reddish hues and higher color temperatures with white or bluish color temperatures.
  • Daylight has a color temperature of approximately 4500 K.
  • the color impression of the light source corresponding to the set color temperature can be generated as accurately as possible taking into account the display options of the respective display elements on the screen.
  • a further embodiment provides that a separate control element is provided for adjusting the size of a light field generated by the luminaire at a predetermined location, the brightness of a light source of the luminaire and the color temperature of the light source. This allows a comprehensive control of the lamp under control of the display of the lamp body and the light cone on the screen.
  • the operating unit may further comprise an operating element, upon actuation of which an image of different sizes is displayed on the screen, in particular an image of an operating field or examination field generated by a camera.
  • an operating element upon actuation of which an image of different sizes is displayed on the screen, in particular an image of an operating field or examination field generated by a camera.
  • Such integrated in the screen "zoom function" can provide an operator improved visibility. For example, a site of interest of the surgical field may be viewed at a desired magnification on the screen.
  • a switching element may be provided, upon actuation of which the screen image of the lamp body and of the light cone is hidden and instead the camera image is displayed. For the camera image is then a larger screen area available.
  • the switching element can also be used to switch back to the representation of the lamp body and the light cone.
  • a light exit surface of the lamp body can also be reproduced, which in particular has the same color as a light field reproduced in the illustration. This allows an operator to further find and capture the representation.
  • a control unit 10 for a surgical light comprises a screen 12 designed as a touch screen, which is preferably based on a liquid crystal display or plasma display and which is accommodated in a housing 14.
  • the housing 14 may be designed for the articulated attachment to a component of the operating light or for wall mounting.
  • the screen 12 is about 95 mm wide and about 55 mm high and has a central region 16 and two lateral regions 17, 18.
  • a plurality of lateral control elements 19 are arranged, by means of which the operating light is switched on and off and various additional functions such as a camera image display can be activated.
  • three central operating elements 20A, 20B, 20C are arranged, which serve to control lighting parameters of the operating light.
  • An electronic interface, not shown, of the operating unit 10 communicates with a plurality of actuating and control devices of the operating light and ensures that each adjustment made by the operating elements 19, 20 is implemented by outputting corresponding control signals directly into the associated change in illumination of the operating light.
  • the control unit 10 also includes a video interface (not shown) configured to receive a video signal from an electronic camera.
  • the electronic camera can be integrated into the surgical light and transmit an image of the surgical field.
  • a luminous display 22 reproduces, which fills about 90% of the height of the screen 12 and in perspective form a lamp body 24 of the operating light including a handle 26 obliquely from below and one of the lamp body 24 outgoing Light cone 28 shows. Also, the light field 30 generated by the surgical light at the predetermined surgical field and the light exit surface 32 of the lamp body 24 is shown in the light display 22.
  • the three central operating elements 20A, 20B, 20C are superimposed on the luminous display 22 and arranged in the foreground of the central area 16 of the screen 12.
  • the luminous display 22 reproduces the state of the light cone 28 realistically, taking into account the current settings of the operating elements 19, 20.
  • the operating unit 10 is further configured to dynamically adjust the lighting display 22 in real time during operation of the operating light, as further described below with reference to FIGS Fig. 2-5 is explained in more detail.
  • the brightness of the light cone 28 in the light display 22 is changed when an operator of the operation light operates the center operation member 20B provided for adjusting the brightness of a light source of the operation light.
  • an operator may start from a maximum brightness according to Fig. 1 choose a minimum brightness by means of the middle control element 20B. It will then according to Fig. 4 in the light display 22 a opposite Fig. 1 darker light cone 28, a darker light field 30 and a darker light exit surface 32 are shown.
  • the color tone of the light cone 28 in the light display 22 is changed in an analogous manner to an adjustment of the light field size and brightness.
  • an operator may start from a color temperature of 4500K according to Fig. 1 select a color temperature of 3600 K by means of the upper control element 20C. It will then according to Fig. 5 in the light display 22 a light cone 28, a light field 30 and a light exit surface 32 in one opposite Fig. 1 reddish hue shown.
  • the upper control 20C allows switching between four different color temperature values.
  • the value 3600 K is an orange hue
  • the value 4000 K a yellow hue
  • the adjustment of the size of the light field, the brightness and the color temperature is possible independently, with the light display 22 is adjusted in each case in real time to the changed setting. For example, for example, when the brightness of the light source is increased by means of the operating element 20B, the light cone 28 is displayed brighter, even if the light field size remains unchanged.
  • the operator of the operating light can detect the current illumination state much faster than if, for example, only among the three superposed controls 20A, 20B, 20C would have to pick out the desired item to check the switch or slider position on it.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

The operation unit (10) has control elements (20A) that adjusts size of light field formed by light at predetermined location. An electronic interface outputs control signals for size of light field to a control device of the lamp, and screen (12) displays the currently selected size of light field. The size of the light field is adjusted by control element to change the shape of corresponding light beam (28) in the form of light cone in the representation (22) on the screen during the operation of lamp.

Description

Die vorliegende Erfindung betrifft eine Bedieneinheit für eine medizinische Leuchte, insbesondere für eine Operationsleuchte oder eine Untersuchungsleuchte, mit wenigstens einem Bedienelement zum Einstellen der Größe eines durch die Leuchte an einem vorbestimmten Ort erzeugten Lichtfelds und einer elektronischen Schnittstelle zum Ausgeben von Steuersignalen für die Größe des Lichtfelds an eine Steuereinrichtung der Leuchte.The present invention relates to an operating unit for a medical lamp, in particular for a surgical lamp or examination lamp, with at least one operating element for adjusting the size of a light field generated by the lamp at a predetermined location and an electronic interface for outputting control signals for the size of the light field to a control device of the lamp.

Die Lichtfeldgröße einer medizinischen Leuchte muss bei jeder Operation oder Untersuchung an die jeweilige Situation angepasst werden. Für einen Bediener der Leuchte ist die Kenntnis der aktuell eingestellten Lichtfeldgröße vorteilhaft, um z.B. den verbleibenden Größenspielraum nach oben oder nach unten abschätzen zu können.The light field size of a medical lamp must be adapted to the respective situation during each operation or examination. For an operator of the luminaire, knowledge of the currently set light field size is advantageous, e.g. be able to estimate the remaining margin of freedom up or down.

Es besteht jedoch das Problem, dass eine Anzeige des Werts der Lichtfeldgröße für den Bediener nicht immer in der erwünschten Schnelligkeit zu erfassen und einzuordnen ist. Mit anderen Worten beansprucht das Kontrollieren der Lichtfeldgröße anhand einer gängigen Anzeige eine erhöhte Aufmerksamkeit des Bedieners, was gerade bei durchzuführenden Operationen einen beträchtlichen Nachteil darstellt.However, there is the problem that an indication of the value of the light field size for the operator is not always to be detected and classified at the desired speed. In other words, controlling the light field size on the basis of a common display demands increased attention of the operator, which is a considerable disadvantage especially in the case of operations to be performed.

Es ist daher eine Aufgabe der Erfindung, eine Bedieneinheit für eine medizinische Leuchte bereitzustellen, welche auch unter Stressbedingungen eine zuverlässige und schnelle Bedienung ermöglicht.It is therefore an object of the invention to provide a control unit for a medical lamp, which allows reliable and rapid operation even under stress conditions.

Die Lösung der Aufgabe erfolgt durch eine Bedieneinheit mit den Merkmalen des Anspruchs 1.The object is achieved by an operating unit having the features of claim 1.

Erfindungsgemäß umfasst eine Bedieneinheit einen Bildschirm zum Anzeigen der aktuell eingestellten Größe des Lichtfelds und ist dazu ausgebildet, während des Betriebs der Leuchte eine Darstellung zumindest eines Leuchtenkörpers der Leuchte einschließlich eines von dem Leuchtenkörper ausgehenden Lichtkegels auf dem Bildschirm wiederzugeben und bei einem Verstellen der Größe des Lichtfelds mittels des Bedienelements die Form des Lichtkegels in der Darstellung entsprechend zu verändern.According to the invention, an operating unit comprises a screen for displaying the currently set size of the light field and is configured to display a representation of at least one lamp body of the lamp including a light cone emanating from the lamp body on the screen during operation of the lamp and adjusting the size of the light field to change the shape of the light cone in the representation accordingly by means of the control element.

Der Bildschirm dient also einerseits zum direkten Anzeigen der Lichtfeldgröße und wird zusätzlich dazu genutzt, den Leuchtenkörper modellhaft darzustellen und an dieser Darstellung von einem Bediener vorgenommene Lichtfeldverstellungen grafisch mitzuvollziehen. Aufgrund der sich synchron mit der Lichtfeldverstellung ändernden Bildschirmdarstellung des Lichtkegels kann ein Bediener die aktuelle Lichtfeldgröße wesentlich schneller und intuitiver erfassen als dies ausschließlich anhand von Zahlenwert- oder Skalenanzeigen möglich ist. Insbesondere ist es möglich, schnell und mühelos festzustellen, an welcher Stelle im Bereich möglicher Lichtfeldgrößen sich die aktuelle Einstellung befindet. Der Bediener wird somit in geringerem Ausmaß von der eigentlichen Operations- oder Untersuchungsaufgabe abgelenkt, was gerade bei schwierigen medizinischen Tätigkeiten von hoher Bedeutung ist.The screen thus serves, on the one hand, to directly display the light field size and is additionally used to model the lamp body and graphically follow the light field adjustments made by an operator in this illustration. Due to the changing of the light cone screen display in synchronism with the light field adjustment, an operator can capture the current light field size much faster and more intuitively than is possible exclusively by means of numerical value or scale displays. In particular, it is possible to quickly and easily determine at which point in the range of possible light field sizes is the current setting. The operator is thus distracted to a lesser extent from the actual operation or investigation task, which is particularly important in difficult medical activities of great importance.

Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen, der Beschreibung sowie der beigefügten Zeichnung angegeben.Further developments of the invention are specified in the dependent claims, the description and the accompanying drawings.

Vorzugsweise ist die Bedieneinheit dazu ausgebildet, bei jedem Verstellvorgang die Form des Lichtkegels in der Darstellung in Echtzeit zu verändern. Dies erleichtert die Bedienung der Leuchte in besonderem Maße. Z.B. können Verstellungen der Lichtfeldgröße unter Beobachtung der Darstellung probeweise vorgenommen werden.Preferably, the operating unit is designed to change the shape of the light cone in the representation in real time during each adjustment process. This facilitates the operation of the lamp in particular. For example, Adjustments of the light field size can be made under observation of the representation on a trial basis.

Gemäß einer Ausgestaltung der Erfindung füllt die Darstellung des Leuchtenkörpers und des Lichtkegels wenigstens 40%, bevorzugt wenigstens 50% und besonders bevorzugt wenigstens 70% der gesamten sichtbaren Höhe und/oder der gesamten sichtbaren Breite des Bildschirms aus. Eine möglichst große Darstellung des Leuchtenkörpers und des Lichtkegels auf der verfügbaren Bildschirmfläche gewährleistet eine gute Sichtbarkeit. Insbesondere kann ein Bediener eine großformatige Darstellung auch aus einiger Entfernung von der Bedieneinheit und unter Stressbedingungen gut erkennen.According to one embodiment of the invention, the representation of the lamp body and the light cone fills at least 40%, preferably at least 50% and particularly preferably at least 70% of the total visible height and / or the entire visible width of the screen. The largest possible representation of the luminaire body and the light cone on the available screen surface ensures good visibility. In particular, an operator can easily recognize a large format image even from a distance away from the control unit and under stress conditions.

Gemäß einer weiteren Ausgestaltung weist die Darstellung des Leuchtenkörpers und des Lichtkegels eine Höhe und/oder eine Breite von wenigstens 20 mm, bevorzugt wenigstens 30 mm und besonders bevorzugt wenigstens 40 mm auf. Gegenüber einer rein symbolhaften Darstellung, z.B. in Form eines "Icons", gibt eine größere Darstellung auf dem Bildschirm einen realistischen und schnell erfassbaren Eindruck von dem Zustand des "realen" Lichtkegels der Leuchte.According to a further embodiment, the representation of the lamp body and the light cone on a height and / or width of at least 20 mm, preferably at least 30 mm and more preferably at least 40 mm. Compared to a purely symbolic representation, e.g. In the form of an "icon", a larger image on the screen gives a realistic and quickly comprehensible impression of the state of the "real" light cone of the luminaire.

Die Darstellung des Leuchtenkörpers und des Lichtkegels kann insbesondere perspektivisch sein. Dies erhöht die Erkennbarkeit der Darstellung weiter und trägt zu einer verbesserten Beurteilung der Lichtfeldgröße anhand der Bildschirmdarstellung bei.The representation of the lamp body and the light cone may be in particular perspective. This further enhances the recognizability of the display and contributes to an improved assessment of the light field size on the basis of the screen display.

In der Darstellung kann zusätzlich ein Lichtfeld wiedergegeben sein, wobei die Bedieneinheit dazu ausgebildet ist, bei einem Verstellen der Größe des Lichtfelds mittels des Bedienelements auch die Größe des Lichtfelds in der Darstellung entsprechend zu verändern.In the illustration, a light field can additionally be reproduced, wherein the operating unit is designed to correspondingly change the size of the light field in the representation when the size of the light field is adjusted by means of the operating element.

Eine Ausführungsform der Erfindung sieht vor, dass der Bildschirm berührungsempfindlich ist und das Bedienelement in den Bildschirm integriert ist. Insbesondere kann der Bildschirm als Touchscreen ausgebildet sein. Das Bedienelement kann bei dieser Ausführungsform mit der Darstellung des Leuchtenkörpers und des Lichtkegels kombiniert sein.An embodiment of the invention provides that the screen is touch-sensitive and the operating element is integrated in the screen. In particular, the screen can be designed as a touchscreen. The control element can be combined in this embodiment with the representation of the lamp body and the light cone.

Insbesondere kann das Bedienelement der Darstellung des Leuchtenkörpers und des Lichtkegels überlagert sein. Die Darstellung kann sich also z.B. als Hintergrundbild über einen wesentlichen Teil der Bildschirmfläche erstrecken, während ein das Bedienelement bildendes Touchscreen-Feld im Vordergrund angeordnet ist. Dies bietet den Vorteil einer günstigen Ausnutzung der zur Verfügung stehenden Bildschirmfläche.In particular, the operating element can be superimposed on the illustration of the luminaire body and the light cone. The representation may thus be e.g. extend as a background image over a substantial part of the screen surface, while a control panel forming the touch screen is arranged in the foreground. This offers the advantage of a favorable utilization of the available screen area.

Die Bedieneinheit kann auch ein Bedienelement zum Einstellen der Helligkeit einer Lichtquelle der Leuchte umfassen, wobei die Bedieneinheit dazu ausgebildet ist, bei einem Verstellen der Helligkeit der Lichtquelle die Helligkeit des Lichtkegels in der Darstellung auf dem Bildschirm entsprechend zu verändern. Für einen Bediener kann es nämlich wesentlich einfacher sein, eine Helligkeitsänderung am dargestellten Lichtkegel nachzuvollziehen als am realen Operations- oder Untersuchungsfeld.The operating unit can also comprise an operating element for adjusting the brightness of a light source of the luminaire, wherein the operating unit is designed to correspondingly change the brightness of the light cone in the display on the screen when the brightness of the light source is adjusted. For an operator, it may in fact be much easier to reconstruct a change in brightness on the light cone shown than in the real operation or examination field.

Weiterhin kann die Bedieneinheit ein Bedienelement zum Einstellen der Farbtemperatur einer Lichtquelle der Leuchte umfassen, wobei die Bedieneinheit dazu ausgebildet ist, bei einem Verstellen der Farbtemperatur der Lichtquelle den Farbton des Lichtkegels in der Darstellung auf dem Bildschirm zu verändern. Da die Farbtemperatur einer Lichtquelle mit den auf einem Bildschirm darstellbaren Farbtönen korrelierbar ist, ermöglicht diese Ausführungsform einem Bediener auch ein schnelles und intuitives Erfassen der Farbtemperaturbeeinflussung durch die Bedieneinheit.Furthermore, the operating unit may comprise an operating element for adjusting the color temperature of a light source of the luminaire, wherein the operating unit is designed to adjust the color tone of the light cone in the illustration on the screen when the color temperature of the light source is adjusted Screen change. Since the color temperature of a light source can be correlated with the color tones that can be displayed on a screen, this embodiment also enables an operator to quickly and intuitively detect the color temperature influence by the operating unit.

Vorzugsweise ist eine Erhöhung der Farbtemperatur von einem Mindestwert bis zu einem Höchstwert mit einer Änderung des Farbtons des Lichtkegels in der Darstellung auf dem Bildschirm von orange über gelb bis weiß korreliert. Besonders bevorzugt entspricht eine Farbtemperatur der Lichtquelle von 4500 K in der Darstellung des Lichtkegels einem weißen Farbton. Ein Bediener kann Farbtemperaturänderungen dann besonders rasch erfassen und beurteilen, da niedrige Farbtemperaturen üblicherweise mit rötlichen Farbtönen und höhere Farbtemperaturen mit weißen oder bläulichen Farbtemperaturen assoziiert werden. Tageslicht hat eine Farbtemperatur von etwa 4500 K. Grundsätzlich kann der der eingestellten Farbtemperatur entsprechende Farbeindruck der Lichtquelle möglichst exakt unter Berücksichtigung der Darstellungsmöglichkeiten der jeweiligen Anzeigeelemente auf dem Bildschirm erzeugt werden. Je nach Anwendung könnte es aber auch erwünscht sein, zur Verdeutlichung die Änderung des Farbtons in der Lichtkegeldarstellung stärker ausgeprägt vorzusehen als es der Änderung der Farbtemperatur der Lichtquelle entspricht.Preferably, an increase in color temperature from a minimum value to a maximum value is correlated with a change in hue of the light cone in the on-screen representation from orange to yellow to white. Particularly preferably, a color temperature of the light source of 4500 K in the representation of the light cone corresponds to a white hue. An operator can then detect and assess color temperature changes particularly quickly because low color temperatures are usually associated with reddish hues and higher color temperatures with white or bluish color temperatures. Daylight has a color temperature of approximately 4500 K. In principle, the color impression of the light source corresponding to the set color temperature can be generated as accurately as possible taking into account the display options of the respective display elements on the screen. Depending on the application, it may also be desirable, for clarification, to provide the change in hue more clearly in the light beam representation than corresponds to the change in the color temperature of the light source.

Eine weitere Ausführungsform sieht vor, dass zum Einstellen der Größe eines durch die Leuchte an einem vorbestimmten Ort erzeugten Lichtfelds, der Helligkeit einer Lichtquelle der Leuchte sowie der Farbtemperatur der Lichtquelle jeweils ein separates Bedienelement vorgesehen ist. Dies ermöglicht eine umfassende Steuerung der Leuchte unter Kontrolle der Darstellung des Leuchtenkörpers und des Lichtkegels auf dem Bildschirm.A further embodiment provides that a separate control element is provided for adjusting the size of a light field generated by the luminaire at a predetermined location, the brightness of a light source of the luminaire and the color temperature of the light source. This allows a comprehensive control of the lamp under control of the display of the lamp body and the light cone on the screen.

Die Bedieneinheit kann ferner ein Bedienelement umfassen, bei dessen Betätigung ein Bild in unterschiedlichen Größen auf dem Bildschirm dargestellt wird, insbesondere ein von einer Kamera erzeugtes Bild eines Operationsfeldes oder Untersuchungsfeldes. Eine derartige in den Bildschirm integrierte "Zoom-Funktion" kann einem Operateur verbesserte Sichtmöglichkeiten verschaffen. Zum Beispiel kann eine interessierende Stelle des Operationsfeldes in einer gewünschten Vergrößerung auf dem Bildschirm betrachtet werden. Zum Aktivieren der Darstellung des Kamerabildes kann ein Umschaltelement vorgesehen sein, bei dessen Betätigung die Bildschirmdarstellung des Leuchtenkörpers und des Lichtkegels ausgeblendet und stattdessen das Kamerabild dargestellt wird. Für das Kamerabild steht dann eine größere Bildschirmfläche zur Verfügung. Über das Umschaltelement kann auch ein Zurückschalten auf die Darstellung des Leuchtenkörpers und des Lichtkegels erfolgen.The operating unit may further comprise an operating element, upon actuation of which an image of different sizes is displayed on the screen, in particular an image of an operating field or examination field generated by a camera. Such integrated in the screen "zoom function" can provide an operator improved visibility. For example, a site of interest of the surgical field may be viewed at a desired magnification on the screen. To activate the display of the camera image, a switching element may be provided, upon actuation of which the screen image of the lamp body and of the light cone is hidden and instead the camera image is displayed. For the camera image is then a larger screen area available. The switching element can also be used to switch back to the representation of the lamp body and the light cone.

In der Darstellung kann ferner eine Lichtaustrittsfläche des Leuchtenkörpers wiedergegeben sein, welche insbesondere den gleichen Farbton aufweist wie ein in der Darstellung wiedergegebenes Lichtfeld. Hierdurch kann einem Bediener das Auffinden und Erfassen der Darstellung weiter erleichtert werden.In the illustration, a light exit surface of the lamp body can also be reproduced, which in particular has the same color as a light field reproduced in the illustration. This allows an operator to further find and capture the representation.

Die Erfindung wird nachfolgend beispielhaft unter Bezugnahme auf die beigefügten Zeichnungen beschrieben.

Fig. 1
zeigt eine erfindungsgemäße Bedieneinheit für eine Operationsleuchte.
Fig. 2
zeigt die Bedieneinheit gemäß Fig. 1 in einer veränderten Einstellung für die Lichtfeldgröße der Operationsleuchte.
Fig. 3
zeigt die Bedieneinheit gemäß Fig. 1 in einer weiter veränderten Einstellung für die Lichtfeldgröße der Operationsleuchte.
Fig. 4
zeigt die Bedieneinheit gemäß Fig. 1 in einer veränderten Einstellung für die Helligkeit einer Lichtquelle der Operationsleuchte.
Fig. 5
zeigt die Bedieneinheit gemäß Fig. 1 in einer veränderten Einstellung für die Farbtemperatur einer Lichtquelle der Operationsleuchte.
The invention will now be described by way of example with reference to the accompanying drawings.
Fig. 1
shows an operating unit according to the invention for a surgical light.
Fig. 2
shows the operating unit according to Fig. 1 in an altered setting for the light field size of the surgical light.
Fig. 3
shows the operating unit according to Fig. 1 in a further modified setting for the light field size of the surgical light.
Fig. 4
shows the operating unit according to Fig. 1 in a different setting for the brightness of a light source of the surgical light.
Fig. 5
shows the operating unit according to Fig. 1 in an altered setting for the color temperature of a light source of the surgical light.

Gemäß Fig. 1 umfasst eine Bedieneinheit 10 für eine Operationsleuchte einen als Touchscreen ausgebildeten Bildschirm 12, welcher vorzugsweise auf einer Flüssigkristall-Anzeige oder Plasma-Anzeige beruht und welcher in einem Gehäuse 14 untergebracht ist. Das Gehäuse 14 kann zur gelenkigen Befestigung an einem Bauteil der Operationsleuchte oder für eine Wandmontage ausgebildet sein. Der Bildschirm 12 ist etwa 95 mm breit und etwa 55 mm hoch und weist einen zentralen Bereich 16 sowie zwei seitliche Bereiche 17, 18 auf. In den seitlichen Bereichen 17, 18 sind mehrere seitliche Bedienelemente 19 angeordnet, mittels welcher die Operationsleuchte ein- und ausschaltbar ist und verschiedene Zusatzfunktionen wie z.B. eine Kamerabild-Darstellung aktivierbar sind. In dem zentralen Bereich 16 sind drei zentrale Bedienelemente 20A, 20B, 20C angeordnet, welche der Steuerung von Beleuchtungsparametern der Operationsleuchte dienen. Eine nicht dargestellte elektronische Schnittstelle der Bedieneinheit 10 kommuniziert mit mehreren Stell- und Steuereinrichtungen der Operationsleuchte und sorgt dafür, dass jede durch die Bedienelemente 19, 20 vorgenommene Einstellung durch Ausgeben entsprechender Steuersignale unmittelbar in die zugehörige Beleuchtungsänderung an der Operationsleuchte umgesetzt wird.According to Fig. 1 For example, a control unit 10 for a surgical light comprises a screen 12 designed as a touch screen, which is preferably based on a liquid crystal display or plasma display and which is accommodated in a housing 14. The housing 14 may be designed for the articulated attachment to a component of the operating light or for wall mounting. The screen 12 is about 95 mm wide and about 55 mm high and has a central region 16 and two lateral regions 17, 18. In the lateral areas 17, 18 a plurality of lateral control elements 19 are arranged, by means of which the operating light is switched on and off and various additional functions such as a camera image display can be activated. In the central area 16, three central operating elements 20A, 20B, 20C are arranged, which serve to control lighting parameters of the operating light. An electronic interface, not shown, of the operating unit 10 communicates with a plurality of actuating and control devices of the operating light and ensures that each adjustment made by the operating elements 19, 20 is implemented by outputting corresponding control signals directly into the associated change in illumination of the operating light.

Die Bedieneinheit 10 umfasst außerdem eine nicht dargestellte Videoschnittstelle, welche zum Empfangen eines Videosignals von einer elektronischen Kamera ausgebildet ist. Die elektronische Kamera kann in die Operationsleuchte integriert sein und ein Bild des Operationsfeldes übertragen.The control unit 10 also includes a video interface (not shown) configured to receive a video signal from an electronic camera. The electronic camera can be integrated into the surgical light and transmit an image of the surgical field.

Wie aus Fig. 1 hervorgeht, ist als Hintergrund im zentralen Bereich 16 des Bildschirms 12 eine Leuchtendarstellung 22 wiedergegeben, welche etwa 90% der Höhe des Bildschirms 12 ausfüllt und in perspektivischer Form einen Leuchtenkörper 24 der Operationsleuchte einschließlich eines Handgriffs 26 schräg von unten sowie eines von dem Leuchtenkörper 24 ausgehenden Lichtkegels 28 zeigt. Auch das von der Operationsleuchte am vorgegebenen Operationsfeld erzeugte Lichtfeld 30 sowie die Lichtaustrittsfläche 32 des Leuchtenkörpers 24 ist in der Leuchtendarstellung 22 wiedergegeben. Die drei zentralen Bedienelemente 20A, 20B, 20C sind der Leuchtendarstellung 22 überlagert und im Vordergrund des zentralen Bereichs 16 des Bildschirms 12 angeordnet.How out Fig. 1 It can be seen that the background in the central area 16 of the screen 12, a luminous display 22 reproduces, which fills about 90% of the height of the screen 12 and in perspective form a lamp body 24 of the operating light including a handle 26 obliquely from below and one of the lamp body 24 outgoing Light cone 28 shows. Also, the light field 30 generated by the surgical light at the predetermined surgical field and the light exit surface 32 of the lamp body 24 is shown in the light display 22. The three central operating elements 20A, 20B, 20C are superimposed on the luminous display 22 and arranged in the foreground of the central area 16 of the screen 12.

Die Leuchtendarstellung 22 gibt den Zustand des Lichtkegels 28 unter Berücksichtigung der aktuellen Einstellungen der Bedienelemente 19, 20 realitätsnah wieder. Die Bedieneinheit 10 ist weiterhin dazu ausgebildet, die Leuchtendarstellung 22 während des Betriebs der Operationsleuchte dynamisch in Echtzeit anzupassen, wie nachfolgend unter zusätzlicher Bezugnahme auf die Fig. 2-5 näher erläutert wird.The luminous display 22 reproduces the state of the light cone 28 realistically, taking into account the current settings of the operating elements 19, 20. The operating unit 10 is further configured to dynamically adjust the lighting display 22 in real time during operation of the operating light, as further described below with reference to FIGS Fig. 2-5 is explained in more detail.

Wenn ein Bediener der Operationsleuchte das untere Bedienelement 20A betätigt, welches zum Einstellen der Größe des Lichtfelds der Operationsleuchte vorgesehen ist, wird nicht nur eine Verstellung der realen Operationsleuchte mittels entsprechender Stelleinrichtungen bewirkt, sondern es wird auch die Form des Lichtkegels 28 sowie die Größe des Lichtfelds 30 in der Leuchtendarstellung 22 derart verändert, dass die realen Änderungen kenntlich gemacht werden. Beispielsweise kann ein Bediener ausgehend von einer maximalen Lichtfeldgröße, bei welcher gemäß Fig. 1 in der Leuchtendarstellung 22 ein paralleler Lichtkegel 28 gezeigt ist, mittels des unteren Bedienelements 20A eine mittlere Lichtfeldgröße wählen. Es wird dann gemäß Fig. 2 in der Leuchtendarstellung 22 ein leicht konvergenter Lichtkegel 28 und ein kleineres Lichtfeld 30 gezeigt. Bei einer weiteren Verringerung der Lichtfeldgröße auf einen Minimalwert wird gemäß Fig. 3 in der Leuchtendarstellung 22 ein deutlich konvergenter Lichtkegel 28 und ein weiter verkleinertes Lichtfeld 30 gezeigt.When an operator of the operation light operates the lower operation member 20A which is provided for adjusting the size of the light field of the operation light, not only an adjustment of the real operation light is effected by means of respective actuators, but it Also, the shape of the light cone 28 and the size of the light field 30 in the light display 22 is changed so that the real changes are identified. For example, an operator may start from a maximum light field size in accordance with Fig. 1 a parallel cone of light 28 is shown in the luminous display 22, select a mean light field size by means of the lower control element 20A. It will then according to Fig. 2 a slightly convergent light cone 28 and a smaller light field 30 are shown in the luminous display 22. In a further reduction of the light field size to a minimum value is in accordance with Fig. 3 in the luminous display 22, a clearly convergent light cone 28 and a further reduced light field 30 are shown.

In ähnlicher Weise wie vorstehend beschrieben wird die Helligkeit des Lichtkegels 28 in der Leuchtendarstellung 22 verändert, wenn ein Bediener der Operationsleuchte das mittlere Bedienelement 20B betätigt, welches zum Einstellen der Helligkeit einer Lichtquelle der Operationsleuchte vorgesehen ist. Beispielsweise kann ein Bediener ausgehend von einer maximalen Helligkeit gemäß Fig. 1 mittels des mittleren Bedienelements 20B eine minimale Helligkeit wählen. Es wird dann gemäß Fig. 4 in der Leuchtendarstellung 22 ein gegenüber Fig. 1 dunklerer Lichtkegel 28, ein dunkleres Lichtfeld 30 und eine dunklere Lichtaustrittsfläche 32 gezeigt.In a similar manner as described above, the brightness of the light cone 28 in the light display 22 is changed when an operator of the operation light operates the center operation member 20B provided for adjusting the brightness of a light source of the operation light. For example, an operator may start from a maximum brightness according to Fig. 1 choose a minimum brightness by means of the middle control element 20B. It will then according to Fig. 4 in the light display 22 a opposite Fig. 1 darker light cone 28, a darker light field 30 and a darker light exit surface 32 are shown.

Wenn ein Bediener der Operationsleuchte das obere Bedienelement 20C betätigt, welches zum Einstellen der Farbtemperatur der Lichtquelle der Operationsleuchte vorgesehen ist, wird - in analoger Weise wie bei einer Verstellung der Lichtfeldgröße und der Helligkeit - der Farbton des Lichtkegels 28 in der Leuchtendarstellung 22 verändert. Beispielsweise kann ein Bediener ausgehend von einer Farbtemperatur von 4500 K gemäß Fig. 1 mittels des oberen Bedienelements 20C eine Farbtemperatur von 3600 K wählen. Es wird dann gemäß Fig. 5 in der Leuchtendarstellung 22 ein Lichtkegel 28, ein Lichtfeld 30 und eine Lichtaustrittsfläche 32 in einem gegenüber Fig. 1 rötlicheren Farbton gezeigt. Konkret erlaubt das obere Bedienelement 20C ein Umschalten zwischen vier verschiedenen Farbtemperaturwerten. Hierbei ist dem Wert 3600 K ein orangener Farbton, dem Wert 4000 K ein gelber Farbton und den Werten 4500 K sowie 5000 K ein weißer Farbton zugeordnet.When an operator of the operation lamp operates the upper control 20C provided for adjusting the color temperature of the light source of the operation light, the color tone of the light cone 28 in the light display 22 is changed in an analogous manner to an adjustment of the light field size and brightness. For example, an operator may start from a color temperature of 4500K according to Fig. 1 select a color temperature of 3600 K by means of the upper control element 20C. It will then according to Fig. 5 in the light display 22 a light cone 28, a light field 30 and a light exit surface 32 in one opposite Fig. 1 reddish hue shown. Specifically, the upper control 20C allows switching between four different color temperature values. Here, the value 3600 K is an orange hue, the value 4000 K a yellow hue and the values 4500 K and 5000 K assigned a white hue.

Die Verstellung der Größe des Lichtfeldes, der Helligkeit sowie der Farbtemperatur ist unabhängig voneinander möglich, wobei die Leuchtendarstellung 22 bei jeder einzelnen Verstellung in Echtzeit an die geänderte Einstellung angepasst wird. Z.B. wird der Lichtkegel 28 heller dargestellt, wenn die Helligkeit der Lichtquelle mittels des Bedienelements 20B vergrößert wird, auch wenn die Lichtfeldgröße unverändert bleibt.The adjustment of the size of the light field, the brightness and the color temperature is possible independently, with the light display 22 is adjusted in each case in real time to the changed setting. For example, For example, when the brightness of the light source is increased by means of the operating element 20B, the light cone 28 is displayed brighter, even if the light field size remains unchanged.

Durch die dynamisch und in Echtzeit aktualiserte, relativ großflächige Darstellung 22 von Leuchtenkörper 24, Lichtaustrittsfläche 32, Lichtkegel 28 und Lichtfeld 30 kann der Bediener der Operationsleuchte den aktuellen Beleuchtungszustand wesentlich schneller erfassen als wenn er beispielsweise erst unter den drei übereinander angeordneten Bedienelementen 20A, 20B, 20C das gewünschte Element heraussuchen müsste, um an diesem die Schalter- oder Schiebereglerstellung zu überprüfen.Due to the dynamic and updated in real time, relatively large-scale representation 22 of the lamp body 24, light exit surface 32, light cone 28 and light field 30, the operator of the operating light can detect the current illumination state much faster than if, for example, only among the three superposed controls 20A, 20B, 20C would have to pick out the desired item to check the switch or slider position on it.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Bedieneinheitoperating unit
1212
Bildschirmscreen
1414
Gehäusecasing
1616
zentraler Bereichcentral area
17, 1817, 18
seitlicher Bereichlateral area
1919
seitliches Bedienelementlateral control
20A, 20B, 20C20A, 20B, 20C
zentrales Bedienelementcentral operating element
2222
Leuchtendarstellunglights representation
2424
Leuchtenkörperluminaire body
2626
Handgriffhandle
2828
Lichtkegellight cone
3030
LichtfeldLichtenfeld
3232
LichtaustrittsflächeLight-emitting surface

Claims (15)

Bedieneinheit (10) für eine medizinische Leuchte, insbesondere für eine Operationsleuchte oder eine Untersuchungsleuchte, mit wenigstens einem Bedienelement (20A) zum Einstellen der Größe eines durch die Leuchte an einem vorbestimmten Ort erzeugten Lichtfelds,
einer elektronischen Schnittstelle zum Ausgeben von Steuersignalen für die Größe des Lichtfelds an eine Steuereinrichtung der Leuchte, und
einem Bildschirm (12) zum Anzeigen der aktuell eingestellten Größe des Lichtfelds,
wobei die Bedieneinheit (10) dazu ausgebildet ist, während des Betriebs der Leuchte eine Darstellung (22) zumindest eines Leuchtenkörpers (24) der Leuchte einschließlich eines von dem Leuchtenkörper (24) ausgehenden Lichtkegels (28) auf dem Bildschirm (12) wiederzugeben und bei einem Verstellen der Größe des Lichtfelds mittels des Bedienelements (20A) die Form des Lichtkegels (28) in der Darstellung (22) entsprechend zu verändern.Operating unit (10) for a medical lamp, in particular for a surgical lamp or an examination lamp, having at least one operating element (20A) for adjusting the size of a light field generated by the lamp at a predetermined location,
an electronic interface for outputting control signals for the size of the light field to a control device of the luminaire, and
a screen (12) for displaying the currently set size of the light field,
wherein the operating unit (10) is designed to reproduce a representation (22) of at least one lamp body (24) of the lamp including a light cone (28) emanating from the lamp body (24) on the screen (12) during operation of the lamp and at an adjustment of the size of the light field by means of the operating element (20A) to change the shape of the light cone (28) in the representation (22) accordingly. Bedieneinheit nach Anspruch 1,
dadurch gekennzeichnet, dass die Bedieneinheit (10) dazu ausgebildet ist, bei jedem Verstellvorgang die Form des Lichtkegels (28) in der Darstellung (22) in Echtzeit zu verändern.Operating unit according to claim 1,
characterized in that the operating unit (10) is adapted to change the shape of the light cone (28) in the representation (22) in real time during each adjustment process. Bedieneinheit nach Anspruch 1 oder 2,
dadurch gekennzeichnet , dass die Darstellung (22) des Leuchtenkörpers (24) und des Lichtkegels (28) wenigstens 40%, bevorzugt wenigstens 50% und besonders bevorzugt wenigstens 70% der gesamten sichtbaren Höhe und/oder der gesamten sichtbaren Breite des Bildschirms (12) ausfüllt.Operating unit according to claim 1 or 2,
characterized in that the representation (22) of the lamp body (24) and the light cone (28) at least 40%, preferably at least 50% and particularly preferably at least 70% of the total visible height and / or the entire visible width of the screen (12) fills. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass die Darstellung (22) des Leuchtenkörpers (24) und des Lichtkegels (28) eine Höhe und/oder eine Breite von wenigstens 20 mm, bevorzugt von wenigstens 30 mm und besonders bevorzugt von wenigstens 40 mm aufweist.Operating unit according to at least one of the preceding claims, characterized in that the representation (22) of the lamp body (24) and the light cone (28) has a height and / or width of at least 20 mm, preferably of at least 30 mm and more preferably of at least 40 mm. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass die Darstellung (22) des Leuchtenkörpers (24) perspektivisch ist.Operating unit according to at least one of the preceding claims, characterized in that the representation (22) of the lamp body (24) is in perspective. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass in der Darstellung (22) ferner ein Lichtfeld (30) wiedergegeben ist, wobei die Bedieneinheit (10) dazu ausgebildet ist, bei einem Verstellen der Größe des Lichtfelds mittels des Bedienelements (20A) auch die Größe des Lichtfelds (30) in der Darstellung (22) entsprechend zu verändern.Operating unit according to at least one of the preceding claims, characterized in that a light field (30) is also reproduced in the illustration (22), wherein the operating unit (10) is designed to adjust the size of the light field by means of the operating element (20A). also to change the size of the light field (30) in the representation (22) accordingly. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Bildschirm (12) berührungsempfindlich ist und das Bedienelement (20A) in den Bildschirm (12) integriert ist.Operating unit according to at least one of the preceding claims, characterized in that the screen (12) is touch-sensitive and the operating element (20A) is integrated in the screen (12). Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Bedienelement (20A) der Darstellung (22) des Leuchtenkörpers (24) und des Lichtkegels (28) überlagert ist.Operating unit according to at least one of the preceding claims, characterized in that the operating element (20A) of the representation (22) of the lamp body (24) and the light cone (28) is superimposed. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Bedieneinheit (10) ein Bedienelement (20B) zum Einstellen der Helligkeit einer Lichtquelle der Leuchte umfasst, wobei die Bedieneinheit (10) dazu ausgebildet ist, bei einem Verstellen der Helligkeit der Lichtquelle die Helligkeit des Lichtkegels (28) in der Darstellung (22) auf dem Bildschirm (12) entsprechend zu verändern.Operating unit according to at least one of the preceding claims, characterized in that the operating unit (10) comprises an operating element (20B) for adjusting the brightness of a light source of the lamp, wherein the operating unit (10) is adapted to adjust the brightness of the light source Brightness of the light cone (28) in the representation (22) on the screen (12) to change accordingly. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass die Bedieneinheit (10) ein Bedienelement (20C) zum Einstellen der Farbtemperatur einer Lichtquelle der Leuchte umfasst, wobei die Bedieneinheit (10) dazu ausgebildet ist, bei einem Verstellen der Farbtemperatur der Lichtquelle den Farbton des Lichtkegels (28) in der Darstellung (22) auf dem Bildschirm (12) zu verändern.Operating unit according to at least one of the preceding claims, characterized in that the operating unit (10) comprises an operating element (20C) for adjusting the color temperature of a light source of the lamp, wherein the operating unit (10) is adapted to adjust the color temperature of the light source Tint of the light cone (28) in the representation (22) on the screen (12) to change. Bedieneinheit nach Anspruch 10,
dadurch gekennzeichnet , dass eine Erhöhung der Farbtemperatur von einem Mindestwert bis zu einem Höchstwert mit einer Änderung des Farbtons des Lichtkegels (28) in der Darstellung (22) auf dem Bildschirm (12) von orange über gelb bis weiß korreliert ist.Operating unit according to claim 10,
characterized in that an increase in the color temperature from a minimum value to a maximum value is correlated with a change in hue of the light cone (28) in the illustration (22) on the screen (12) from orange to yellow to white. Bedieneinheit nach Anspruch 10 oder 11,
dadurch gekennzeichnet, dass eine Farbtemperatur der Lichtquelle von 4500 K in der Darstellung (22) des Lichtkegels (28) einem weißen Farbton entspricht.Operating unit according to claim 10 or 11,
characterized in that a color temperature of the light source of 4500 K in the representation (22) of the light cone (28) corresponds to a white hue. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zum Einstellen der Größe eines durch die Leuchte an einem vorbestimmten Ort erzeugten Lichtfelds, der Helligkeit einer Lichtquelle der Leuchte sowie der Farbtemperatur der Lichtquelle jeweils ein separates Bedienelement (20A, 20B, 20C) vorgesehen ist.Operating unit according to at least one of the preceding claims, characterized in that for adjusting the size of a light field generated by the light at a predetermined location, the brightness of a light source of the light and the color temperature of the light source each have a separate control element (20A, 20B, 20C) is. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass die Bedieneinheit (10) ein Bedienelement umfasst, bei dessen Betätigung ein Bild in unterschiedlichen Größen auf dem Bildschirm (12) dargestellt wird, insbesondere ein von einer Kamera erzeugtes Bild eines Operationsfeldes oder Untersuchungsfeldes.Operating unit according to at least one of the preceding claims, characterized in that the operating unit (10) comprises an operating element, upon actuation of which an image of different sizes is displayed on the screen (12), in particular an image of a surgical field or examination field generated by a camera. Bedieneinheit nach zumindest einem der vorstehenden Ansprüche, dadurch gekennzeichnet , dass in der Darstellung (22) ferner eine Lichtaustrittsfläche (32) des Leuchtenkörpers (24) wiedergegeben ist, welche insbesondere den gleichen Farbton aufweist wie ein in der Darstellung (22) wiedergegebenes Lichtfeld (30).Operating unit according to at least one of the preceding claims, characterized in that in the illustration (22) further a light exit surface (32) of the lamp body (24) is reproduced, which in particular has the same color as a in the representation (22) reproduced light field (30 ).
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