EP2302287B1 - Dispositif d'éclairage avec dispositif de regulation de l'éclairement en fonction de la luminance du champ d'éclairage et utilisation correspondante - Google Patents

Dispositif d'éclairage avec dispositif de regulation de l'éclairement en fonction de la luminance du champ d'éclairage et utilisation correspondante Download PDF

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Publication number
EP2302287B1
EP2302287B1 EP10306015.8A EP10306015A EP2302287B1 EP 2302287 B1 EP2302287 B1 EP 2302287B1 EP 10306015 A EP10306015 A EP 10306015A EP 2302287 B1 EP2302287 B1 EP 2302287B1
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EP
European Patent Office
Prior art keywords
luminance
light source
illuminance
lighting
illumination
Prior art date
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Application number
EP10306015.8A
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German (de)
English (en)
French (fr)
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EP2302287A3 (fr
EP2302287A2 (fr
Inventor
Gabriel Peyras
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.)
Maquet SAS
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Maquet SAS
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Publication of EP2302287A3 publication Critical patent/EP2302287A3/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • 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
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • 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
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0457—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
    • 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
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • 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
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • F21V23/0478—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person by means of an image recording device, e.g. a camera
    • 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
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Definitions

  • the operative lights provide a large amount of light (40,000 lux to 160,000 lux) in the surgical field and allow the surgeon to work in good conditions.
  • This high amount of light is needed because of the low reflectivity of certain human tissues, such as muscles and certain tissues of the digestive tract, and the fact that the human eye has a better resolution for higher luminances.
  • Luminance therefore consists of two elements: the "luminance factor” depends solely on the reflectivity of the surface and the "luminance coefficient” depends solely on the surface shape.
  • Known operating lighting devices are equipped with an illumination adjustment system which requires the manual intervention of the user and which makes it possible to modify the luminous flux of the lighting device when the type of tissue observed changes.
  • the patent US 6964490 for example, relates to a lighting device of an operating field adapted to adjust the luminous flux as a function of the size of the illumination field to maintain the illumination at a substantially constant level.
  • the means detecting the change in the size of the illumination field may be, inter alia, an optical detector adapted to detect the variation of the luminance of the operating field. The variation of the detected luminance is then used to adjust the illumination to a predetermined level by changing the luminous flux.
  • the document EP 0544559 discloses an operating lighting device adapted to obtain lighting of maximum light intensity by comparison between a value of the current light intensity and a value of the previously memorized light intensity.
  • the document EP 1433998 discloses an operative lighting device adapted to detect an obstacle located between the light source and the illumination field.
  • These operating lighting devices are not adapted to modify the level of illumination as a function of the luminance, that is to say as a function of the luminance factor depending solely on the observed tissue reflectivity and / or the luminance depending solely on the surface form of the illuminated area, and therefore do not allow to maintain or obtain an ideal luminance for the comfort of the surgeon, especially during a change of tissue or shape of the field of intervention.
  • the present invention aims to overcome this drawback and to provide a lighting device adapted to create a better illumination of the lighting field and this preferably without human intervention.
  • the invention further relates to a use of a device as mentioned above to illuminate a field of intervention of a physician.
  • the lighting device 1 is intended to illuminate a lighting field 2 extending along a lighting plane PP including horizontal.
  • the lighting field 2 is the field of intervention of a doctor on a patient 3 in a medical operating room.
  • the lighting device 1 comprises a support 4 on which is disposed a light source 5 formed of a plurality of lighting elements 6 and adapted to illuminate the lighting field 2.
  • the lighting device 1 comprises in in addition to a device 7 for controlling the illumination of the light source 5.
  • This regulation device 7 for the illumination of the light source 5 comprises an input filter 8, a processor 9 and a memory 10.
  • the lighting device 1 further comprises a device for determining the actual luminance 11 adapted to determine the actual luminance of the lighting field 2.
  • This device for determining the actual luminance 11 is provided with a plurality of modules for determining the actual luminance 12 distributed on the support 4, in particular photodiodes and / or a CCD camera, or any other system adapted for this purpose.
  • each photodiode is provided with an optical system combining the illumination field 2 and the photodiode.
  • the CCD camera captures the illumination field 2 and has an output determining the actual luminance from the gray levels of pixels, the calculated exposure time by the automatic adjustment system of the exposure time or the aperture diameter calculated by the automatic aperture diameter adjustment system.
  • the lighting device 1 further comprises a device 13 for adjusting the illumination of the light source 5 and a man-machine interface 14.
  • the man-machine interface 14 comprises an input means 15 adapted to capture setpoints and a display means 16 adapted to display the values entered and the state of the lighting device 1.
  • the set values are in particular set values of the luminance of the lighting field 2 without being limited to those -this.
  • the lighting device 1 further comprises obstacle detection means 17 arranged on the support 4 and adapted to detect obstacles, such as for example arms, situated between one of the modules for determining the actual luminance 12 and the lighting field 2 and adapted to communicate with the input filter 8 of the control device 7 of the illumination of the light source.
  • obstacle detection means 17 arranged on the support 4 and adapted to detect obstacles, such as for example arms, situated between one of the modules for determining the actual luminance 12 and the lighting field 2 and adapted to communicate with the input filter 8 of the control device 7 of the illumination of the light source.
  • the Figure 5 represents the functional modules of the lighting device 1 according to the invention. Each of the functional blocks corresponds to one of the structural elements described above with reference to the Figure 4 .
  • the different modules of the lighting device 1, namely the light source 5, the regulation device 7 of the illumination of the light source 5, the device for determining the actual luminance 11, the adjustment device 13 from the illumination of the light source 5, the man-machine interface 14 and the means adapted to detect the obstacles 17, are coupled together by links, represented by arrows, 18 to 21 in the Figure 5 , the direction of the arrows 18 to 21 indicating the direction of transmission of information or the direction of transmission of a command between the respective elements.
  • the device operates as follows.
  • the user of the lighting device 1 enters through the man-machine interface 14 a set value of the luminance which corresponds to the desired luminance.
  • the setpoint therefore represents a determined luminance of the illumination field.
  • the set value of the luminance is entered at the beginning of the use, but it is also possible to enter or modify it during the use of the lighting device 1.
  • This set value of the luminance is transmitted via a link 18 to the control device 7 of the illumination of the light source 5 and stored in the memory 10.
  • the actual luminance determination device 11 determines the actual luminance of the illumination field 2 and creates an actual luminance signal of the illumination field 2 which is transmitted via the link 19 to the input filter 8 of the regulating device 7. the illumination of the light source 5 and which is then stored in the memory 10.
  • the processor 9 of the control device 7 of the illumination of the light source 5 determines the difference between the actual luminance value and the value of the luminance setpoint, as well as the absolute value of this difference and compares this absolute value of the difference with a value of the difference in luminance limit.
  • the illumination control device 7 of the light source 5 does not control the adjustment device 13 of the illumination of the source of the light 5 or the control for maintaining the illumination. Then, the control device 7 again reads an actual luminance value received by the actual luminance determination device 11 and repeats the described method.
  • the control device 7 of the illumination of the light source 5 controls the adjustment device 13 of the illumination of the light source 5 in a direction tending to reduce the difference between the actual luminance value and the set value of the luminance. Then, the adjustment device 13 of the illumination of the light source 5 acts on the light source 5 to increase or decrease the illumination of the light source 5 according to the control. More specifically, the adjustment device 13 of the illumination of the light source 5 varies the illumination of the light source 5. Preferably, this variation is performed by varying the light flux of the light source 5 without changing the size of the lighting field 2.
  • the illumination of the light source which is defined as the luminous flux of the light source received by a surface unit.
  • the luminance of the illumination field 2 is again determined by the determination of the actual luminance 11 and the procedure described above is repeated as many times until the absolute value of the difference between the actual luminance value and the set value of the luminance becomes less than or equal to the value limit of luminance difference, and preferably becomes equal to 0.
  • the detection means 7 detect an arm or another obstacle between the illumination field 2 and one of the actual luminance determination modules 12, a corresponding signal is transmitted to the input filter 8 of the control device 7 of the illumination of the light source 5 and the respective luminance value determined by the actual luminance determination module 12 is blocked by the input filter 8, and the illumination is thus regulated according to the set of values luminance determined by the other modules for determining the actual luminance on 12.
  • the device for determining the actual luminance 11 determines the actual luminance of the illumination field 2 periodically or continuously and the control device 7 of the illumination of the light source 5 periodically receives an actual luminance value of the illumination device. determination of the actual luminance 11.
  • the duration of the period is chosen such that the illumination of the light source 5 can be dynamically modified without the eye of the user of the lighting device 1 being exposed to a field of view. luminance illumination 2 substantially different from the luminance setpoint entered last and currently in effect.
  • the lighting device 1 is adapted to, when the actual luminance differs from the target luminance by a value greater than the limit deviation, bring the actual luminance to the limit value value, in a time not exceeding 2000 ms, and more preferably not 500 ms.
  • the lighting device 1 thus modifies the illumination as a function of the actual luminance of the illumination field 2, determined by the device for determining the actual luminance 11, and as a function of the set value of the luminance defined by the The user through the man-machine interface 14.
  • the change in illumination occurs autonomously.
  • autonomous means that the lighting device 1 is adapted to modify the illumination without requiring human intervention during this modification.
  • the Figure 1 shows a diagram of an example of luminance variation of a constant-illumination field of illumination during a surgical procedure with a lighting device of the state of the art.
  • the abscissa shows the time T
  • the ordinate on the left indicates the luminance of the lighting field.
  • the pace of the luminance in time is referenced L.
  • the ordinate on the right indicates the illumination and the pace of the illumination is referenced E. It is found that the luminance at time T 1 , corresponding to the beginning of the operation (assuming, for example, that the operation in question is not a cavity operation of gynecology, buccal type, etc.), is raised for a given illumination E 1 .
  • the Figure 1 also presents the evolution of the illumination emitted by the light source. It can be seen that no solicitation to modify illumination has has been operated, which results in a level of illumination of the constant light source.
  • the Figure 2 indicates the same situation as that described above with reference to the figure 1 , but at a time T 4 an increase in the illumination of the light source occurs by the intervention of the user. This leads in the lighting devices of the state of the art to a jump of the real luminance, provided that at time T4 the other parameters remain unchanged.
  • the Figure 3 shows a diagram of the type of diagrams of Figures 1 and 2 representing the appearance of the luminance and the illumination during an operation with a lighting device 1 according to the invention, which is adapted to maintain the actual luminance over time at a constant level or at the within a limit deviation, even in the presence of tissue reflectivity changes and / or surface and cavity situations.
  • the advantage of this lighting device 1 is a visual comfort for the user as well as the lack of need to modify the lighting setpoint by the same user, when the reflectivity and / or the surface shape change.
  • the illumination of the light source 5 is modified and adjusted automatically according to the actual luminance of the illumination field 2.
  • the illumination is set to a lower level to avoid a level of the actual luminance too high.
  • the control device 7 of the illumination of the light source 5 increases the illumination to avoid a loss of luminance due to the absorption of light by the tissue or the surface form of the illumination field 2.
  • the information transmitted between the different components described above is by values.
  • the information may be transmitted by signals other than values, for example electrical voltages or frequencies.
  • the lighting device 1 according to the invention is particularly intended for surgical lighting for surgery but can also be applied to the dental field.
  • the lighting device 1 comprises a device for determining the actual luminance 11 adapted to determine the actual luminance of the illumination field 2 and to create and transmit the actual luminance signal to the control device 7 of the illumination of the source 5 is a function of the reflectivity of the illumination field 2.
  • the illumination device 1 is also adapted to bring or maintain the brightness of the illumination field 2 within a set luminosity range or a target brightness when the reflectivity of the illumination field 2 is changed.
  • the lighting device therefore has the following characteristics. It is an operating lighting device comprising means for estimating the real luminance of the illuminated field or object, in particular as a function of the reflectivity and the surface shape of the object or field lighting, and means for controlling the illumination by the operating light at a luminance value determined according to the estimated luminance.
  • the luminance value determined is preferably constant over a given period, in particular over at least 1 min.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP10306015.8A 2009-09-24 2010-09-22 Dispositif d'éclairage avec dispositif de regulation de l'éclairement en fonction de la luminance du champ d'éclairage et utilisation correspondante Active EP2302287B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0956604A FR2950413B1 (fr) 2009-09-24 2009-09-24 Dispositif d'eclairage avec dispositif de regulation de l'eclairement en fonction de la luminance du champ d'eclairage et utilisation correspondante

Publications (3)

Publication Number Publication Date
EP2302287A2 EP2302287A2 (fr) 2011-03-30
EP2302287A3 EP2302287A3 (fr) 2014-04-30
EP2302287B1 true EP2302287B1 (fr) 2016-03-02

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EP10306015.8A Active EP2302287B1 (fr) 2009-09-24 2010-09-22 Dispositif d'éclairage avec dispositif de regulation de l'éclairement en fonction de la luminance du champ d'éclairage et utilisation correspondante

Country Status (5)

Country Link
US (1) US8710415B2 (zh)
EP (1) EP2302287B1 (zh)
JP (1) JP5828624B2 (zh)
CN (1) CN102111935B (zh)
FR (1) FR2950413B1 (zh)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
CN102499615A (zh) * 2011-09-26 2012-06-20 首都医科大学 照明光源装置以及取样和控制方法
CN102499617A (zh) * 2011-10-20 2012-06-20 上海欧太医疗器械有限公司 内窥镜光亮度自动调节装置及其调节控制方法
US9722882B2 (en) 2012-12-13 2017-08-01 Level 3 Communications, Llc Devices and methods supporting content delivery with adaptation services with provisioning
CN104113946B (zh) * 2013-04-17 2017-02-22 宝山钢铁股份有限公司 光源照度自适应控制装置及方法
CN103860129B (zh) * 2014-03-19 2015-01-07 深圳市开立科技有限公司 内窥镜光源亮度自动调节的方法和装置
KR101891272B1 (ko) * 2015-07-31 2018-08-24 주식회사 덴티스 전기장 제어방식을 이용한 의료용 조명장치
DE102015113339A1 (de) 2015-08-13 2017-02-16 Karl Leibinger Medizintechnik Gmbh & Co. Kg Operationsleuchte mit Helligkeitsregulierung
CN109286756B (zh) * 2017-07-20 2021-01-05 东莞市沃德普自动化科技有限公司 一种以图像均匀为目的的光源强度设计方法
CN111919514B (zh) * 2018-02-09 2023-08-29 金泰克斯公司 基于图像控制的自适应照明阵列
CN108419345B (zh) * 2018-03-19 2019-08-16 深圳前海华夏智信数据科技有限公司 基于图像分析的控灯方法及装置
US11484382B2 (en) 2019-04-24 2022-11-01 American Sterilizer Company System and method for identification of illumination abnormalities and automatic compensation therefor

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US6464490B1 (en) 1998-08-31 2002-10-15 Clean Energy Combustion Systems, Inc. Circular pulsating combustors
DE10209533A1 (de) 2002-03-04 2003-12-04 Berchtold Holding Gmbh Operationsleuchte
EP1568937B1 (de) * 2004-02-28 2007-06-20 TRUMPF Kreuzer Medizin Systeme GmbH + Co. KG Operationsleuchte
JP4754280B2 (ja) * 2005-06-24 2011-08-24 富士重工業株式会社 発光装置の輝度制御システム
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Also Published As

Publication number Publication date
CN102111935A (zh) 2011-06-29
US8710415B2 (en) 2014-04-29
CN102111935B (zh) 2015-03-04
EP2302287A3 (fr) 2014-04-30
EP2302287A2 (fr) 2011-03-30
JP5828624B2 (ja) 2015-12-09
JP2011071117A (ja) 2011-04-07
FR2950413A1 (fr) 2011-03-25
FR2950413B1 (fr) 2013-04-26
US20110068694A1 (en) 2011-03-24

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