WO2013072815A1 - Effet de texture dynamique - Google Patents

Effet de texture dynamique Download PDF

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Publication number
WO2013072815A1
WO2013072815A1 PCT/IB2012/056233 IB2012056233W WO2013072815A1 WO 2013072815 A1 WO2013072815 A1 WO 2013072815A1 IB 2012056233 W IB2012056233 W IB 2012056233W WO 2013072815 A1 WO2013072815 A1 WO 2013072815A1
Authority
WO
WIPO (PCT)
Prior art keywords
light sources
illuminance
controller
operating parameter
over time
Prior art date
Application number
PCT/IB2012/056233
Other languages
English (en)
Inventor
Lucius Theodorus Vinkenvleugel
Denis Joseph Carel Van Oers
Denis Fournier
Dragan Sekulovski
Pascal Eric Jerome TERNACLE
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2013072815A1 publication Critical patent/WO2013072815A1/fr

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Classifications

    • 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
    • H05B47/155—Coordinated control of two or more light sources

Definitions

  • the present invention relates to the control of light sources.
  • the use of artificial lighting to achieve practical or aesthetic effects is continuously increasing, and there are numerous examples of lighting systems adapted for offices, restaurants, museums, advertising boards, homes, shops, shop windows, and so on.
  • lighting systems adapted for offices, restaurants, museums, advertising boards, homes, shops, shop windows, and so on.
  • items/objects are displayed for observers, e.g. shop windows for displaying merchandise to customers, museums where works of art are displayed to visitors, etc.
  • the purpose of the lighting system may be to attract the attention of a customer/visitor to the specific item displayed.
  • the lighting may be arranged as one or more lights (e.g. LEDs, spot lights, fluorescent lamps) with the aim to create a suitable luminous environment.
  • a problem with the present lighting arrangements is that the lighting used for this purpose is not properly adapted to the item which is to be displayed. More specifically, the present lighting arrangements do not provide satisfactory lighting with respect to the three-dimensional surface of the item, allowing the viewer to perceive or grasp its quality, texture, curvature, etc.
  • a controller for controlling at least two light sources arranged for illuminating a surface, wherein the light sources are arranged at different positions relative to the surface.
  • the controller is configured to obtain the illuminance on the surface.
  • the controller is configured to vary at least one operating parameter of the at least two light sources over time such that a rendition of the surface by means of the light from the at least two light sources varies over time, wherein the rendition is dependent on the texture of the surface.
  • the controller is configured to control the at least one operating parameter such that the illuminance on the surface is maintained over time within a predetermined, bounded interval.
  • the present invention is based on the idea of providing a controller which is able to vary the operating parameter(s) of the light source(s) over time such that a rendition of the surface, which rendition is dependent on the texture of the surface, varies over time, while still maintaining the illuminance on the surface within a predetermined, bounded interval.
  • a controller which is able to vary the operating parameter(s) of the light source(s) over time such that a rendition of the surface, which rendition is dependent on the texture of the surface, varies over time, while still maintaining the illuminance on the surface within a predetermined, bounded interval.
  • the controller may be adapted to control the operating parameter in a first light source which does not correspond to the controlled operating parameter in a second light source.
  • a method of controlling at least two light sources arranged for illuminating a surface wherein the light sources are arranged at different positions relative to the surface.
  • the method comprises the step of obtaining the illuminance on the surface.
  • the method comprises the step of varying at least one operating parameter of the at least two light sources over time such that a rendition of the surface by means of the light from the at least two light sources varies over time, wherein the rendition is dependent on the texture of the surface.
  • the method comprises the step of controlling the at least one operating parameter such that the illuminance on the surface is maintained over time within a predetermined, bounded interval.
  • the present invention is advantageous in that the controller provides a rendition of the surface which varies over time, and as the rendition of the surface is dependent on the texture of the surface, a dynamic texture effect of the surface is thereby created.
  • the texture of the surface e.g. fiber texture, texture patterns, folds, roughness, variation in depth, etc.
  • the texture of the surface furthermore affects other properties such as the light reflection, absorption, transmission, scattering, etc., of/from the surface.
  • the controller's varying of the operating parameter(s) of the light source(s) over time and the differently positioned light sources lead to a varying rendition of the surface.
  • each light source generates a different rendition of the surface due to the texture of the surface, and by varying operating parameter(s) of the light sources, a varying rendition of the surface is obtained.
  • the varying rendition of the surface results, in its turn, in a dynamic texture effect of the surface, wherein the texture of the surface is emphasized and the perception of the surface is enhanced.
  • the controller of the present invention helps create a dynamic texture effect on a surface of e.g. merchandise (clothing), a painting, a sculpture, etc., wherein the dynamic texture effect accentuates the surface quality and attractiveness.
  • the present invention is further advantageous in that the illuminance on the surface, which is maintained within a predetermined, bounded interval, leads to a dynamic texture effect of the surface which is subtle, attractive, unobtrusive and/or perceived as non- artificial. Furthermore, as the controller of the present invention is configured to maintain the illuminance on the surface constant or bounded over time, the attention of an observer is primarily drawn to the surface, not to the lighting from the light sources itself.
  • the controller is arranged for controlling at least two light sources.
  • the controller is arranged for controlling at least two light sources and maximally all of the light sources.
  • the at least two light sources are arranged for illuminating a surface, wherein the light sources are arranged at different positions relative to the surface.
  • the two or more light sources are arranged at positions from where they provide different directions of incident light towards the surface. Consequently, properties of the surface, such as e.g. the texture, may e.g. lead to shadows pointing in different directions on the surface, reflections pointing away in different directions from the surface, etc.
  • the controller is configured to obtain the illuminance on the surface.
  • the illuminance on the surface may be obtained e.g. from estimations/calculations and/or from measurements (e.g. by a sensor).
  • the controller is further configured to vary the operating parameter(s) of the light sources over time such that a rendition of the surface by means of the light from the light sources varies over time, wherein the rendition is dependent on the texture of the surface.
  • operating parameter is meant here a control signal for controlling substantially any property of the light source, e.g. luminous intensity, color, etc., wherein the variation of the operating parameters creates a dynamic texture effect on the surface.
  • the controller may vary any operating parameter of any light source, e.g. a first operating parameter of a first light source, a first and/or a second operating parameter of a second light source, etc.
  • the controller is further configured to control the operating parameter(s) of the light sources such that the illuminance on the surface is maintained over time within a predetermined, bounded interval. Hence, the controller acts to maintain/preserve a substantially constant illuminance on the surface, wherein the two or more light sources are arranged to illuminate the surface.
  • the controller may further comprise an illuminance sensor arranged for measuring the illuminance on the surface, such that the illuminance is obtained as a measured illuminance.
  • the illuminance on the surface is measured by an illuminance sensor (hereafter: sensor) connected to or included in the controller, and the controller is configured to control the operating parameter(s) of the light sources, based on the measured illuminance.
  • sensor illuminance sensor
  • the present embodiment is advantageous in that the controller may even further improve its control of the operating parameters such that a desired/predetermined rendition of the surface is achieved.
  • the senor provides feedback to the controller, and the controller may thus vary the operating parameters such that a desired illuminance is reached/maintained which corresponds to a desired/predetermined rendition of the surface.
  • the present embodiment is further advantageous in that the controller may control the illuminance on the surface to an even greater extent such that the illuminance is maintained over time within a predetermined, bounded interval.
  • the sensor provides feedback to the controller e.g. to increase, decrease or maintain one or more operating parameters of the light from the light sources for the purpose of maintaining the illuminance within the mentioned interval.
  • the senor may further be arranged for measuring a spatial distribution of the illuminance on the surface.
  • spatial distribution is meant here a distribution of the illuminance on the surface, which surface may in turn be arranged in three dimensions.
  • the controller may measure a distribution of the illuminance on a surface which is e.g. wrinkled, folded, undulated, etc.
  • the spatial distribution may for example be relatively high on a portion of the surface exposed to the light from the light sources and relatively low on a portion of the surface comprising shadows.
  • the present embodiment is advantageous in that the controller may even further improve the variation of the operating parameter(s) such that a texture effect of the surface, which corresponds even more to the preferred one, is obtained. For example, if the illuminance of a portion of the surface is considered too high and the illuminance of another portion of the surface is considered too low, the controller may vary the operating parameters e.g. by decreasing the difference in brightness between the light sources such that a more even illuminance is provided over the surface.
  • the senor may further be arranged for measuring the illuminance at at least two spatially separated points of the surface.
  • the controller by measuring the illuminance at two or more points on the surface by means of the sensor, may estimate a spatial average of the illuminance on the surface. This even further contributes to the control of the operating parameters, such that the illuminance on the surface is maintained over time within a predetermined, bounded interval.
  • the senor may further be arranged for measuring a spatial average of the illuminance over at least one sub-area of the surface.
  • the controller based on the illuminance(s) of the sub-area(s), may even further improve the estimate of the spatial average of the illuminance on the surface. Consequently, the controller may even further improve the control of the operating parameters such that the illuminance on the surface is maintained over time within a predetermined, bounded interval.
  • the illuminance on the surface may be obtained as an estimated illuminance based on the respective contributions of the at least one operating parameter of the at least two light sources and, possibly, on a known or predicted transfer function or the like.
  • the illuminance on the surface may be estimated/predicted based on the contributions of the operating parameter(s) (e.g. luminous intensity, color, etc.).
  • the present embodiment is advantageous in that no additional sensors are needed for measuring the illuminance on the surface.
  • the estimate of the illuminance may further be based on measurement data from an existing sensor, such that the estimate is even further improved.
  • an estimate based on sensor measurements may especially be advantageous in the event of a dysfunction or breakdown of the sensor.
  • the controller may further be configured to vary the at least one operating parameter such that the at least one operating parameter of the at least two light sources varies periodically over time.
  • periodic is meant here that the variation of the operating parameter is such that the operating parameter follows a recurring pattern over time.
  • An advantage of the present embodiment is that the periodic variation of the operating parameter(s) over time provides an even more attractive rendition of the surface, wherein properties such as e.g. shadows and reflections vary periodically.
  • the present embodiment is further advantageous in that the periodicity of the operating parameter(s) of the light sources even further contributes to lighting that causes the attention of an observer to be primarily drawn to the illuminated surface instead of to the lighting itself.
  • the operating parameter of the at least two light sources may vary sinusoidally over time.
  • the controller is configured to provide a smooth, billowing light which even further contributes to an attractive rendition of the surface.
  • the subtle and unobtrusive illumination of the embodiment consequently leads to even more enhanced attention of an observer towards the surface, instead of to the lighting itself.
  • the controller may further be configured to control the at least one operating parameter such that the at least two light sources are symmetrically shifted in phase and vary with the same frequency and amplitude. For example, if there are n light sources, then the total light from the light sources yields /? -phase illumination, wherein the phase shift between adjacent periods of the light sources is 360%.
  • the present embodiment is advantageous in that the symmetry in the variation of the operating parameter(s) provides a symmetric rendition of the surface over time, which even further enhances the attractiveness of the rendition of the surface.
  • the present embodiment is advantageous in that the controller may more easily maintain the illuminance on the surface over time within a predetermined, bounded interval, and thereby bring out a subtle and unobtrusive texture effect from the surface.
  • the controller may further comprise a first subcontroUer configured for controlling at least one of the at least two light sources to define a periodic variation of the at least one operating parameter.
  • the controller may further comprise a second subcontroUer configured to control the at least one operating parameter of at least one of the at least two light sources other than the at least one light source defining a periodic variation of the at least one operating parameter, such that the illumination on the surface is maintained over time within the predetermined, bounded interval.
  • one or more light sources may be controlled (or set) by the first subcontroUer to a periodic variation (e.g.
  • an advantage of the present embodiment is that not all of the light sources need to be actively controlled, e.g. for the purpose of maintaining the illuminance on the surface over time within a predetermined, bounded interval. Instead, the second subcontroller may control a (small) subset of the light sources, which results in a more convenient arrangement for the control of the light sources.
  • the controller may further be configured to control the at least one operating parameter of all the light sources.
  • the present embodiment is advantageous in that an even more
  • the at least one operating parameter may be luminous intensity, color point, wavelength spectrum, or a combination thereof.
  • the operating parameter(s) may be substantially any parameter(s) of the light of the light sources which may be varied to create a varying rendition of the surface, and thereby, a dynamic texture effect.
  • the parameters such as luminous intensity, color point, wavelength spectrum, etc., may contribute to different aspects of the rendition of the surface. For example, a variation in luminous intensity may create varying shadows on the surface (i.e. a high luminous intensity may create a distinct shadow), a different color point may diffract the light differently (e.g. blue and red light), etc.
  • the present embodiment is advantageous in that the variation of the operating parameters may provide an even more attractive rendition of the surface.
  • a lighting control system for controlling the illuminance on a surface, comprising at least two light sources arranged at different positions relative to the surface, and a controller as defined in any one of the preceding embodiments, arranged to control the at least two light sources.
  • Fig. 1 is a schematic illustration of a lighting system for controlling the illuminance on a surface
  • Figs. 2a-c are diagrams of the illuminance on the surface as a function of time
  • Figs. 3-4 are schematic illustrations of exemplifying lighting systems for controlling the illuminance on a surface.
  • controller for controlling at least two light sources arranged for illuminating a surface.
  • Fig. 1 is a schematic illustration of a lighting system 100 for controlling the illuminance on a surface 101.
  • the lighting system 100 comprises two light sources A and B which are arranged at different positions relative to the surface 101.
  • the light sources A and B are positioned in the ceiling of a room and at a relatively large distance from each other, wherein the light sources A and B are arranged to illuminate the surface 101 in an obliquely downward direction.
  • the light sources A and B are further arranged such that the angle between the incident lights from the light sources A and B is relatively large. It will be appreciated that substantially any other arrangement of the light sources A and B at different positions is feasible, and further, that any number of light sources exceeding two, as shown in this figure, may be realized.
  • a controller 110 is provided in the ceiling for controlling the light sources A and B.
  • the controller 110 may be connected to the light sources A and B by wire, or alternatively, by a wireless connection. It may be noted that the arrangement of the controller 110 in the ceiling serves merely as an example, and that the controller 110 may alternatively be provided substantially anywhere for controlling the light sources A and B.
  • the controller 110 is configured to obtain the illuminance on the surface 110, wherein the controller 110 may obtain the illuminance by estimation/calculation/prediction (e.g. by estimating the illuminance on the surface 101 as a function of the luminous intensity of the light sources A and B, the distance from the light sources A and B to the surface 101, etc.), or as a measurement from e.g. a sensor, measuring the illuminance on the surface 101.
  • estimation/calculation/prediction e.g. by estimating the illuminance on the surface 101 as a function of the luminous intensity of the light sources A and B, the distance from the light sources A and B to the surface 101, etc.
  • a sensor e.g. a sensor
  • the controller 110 is configured to vary at least one operating parameter 111 of the light sources A and B arranged for illuminating the surface 101, wherein the operating parameter 1 11 may be e.g. luminous intensity, color point, wavelength spectrum, or a combination thereof.
  • the operating parameter 1 11 may be e.g. luminous intensity, color point, wavelength spectrum, or a combination thereof.
  • the rendition of the surface 101 by means of the light from the light sources A and B varies over time.
  • the rendition of the surface 101 is dependent on the texture of the surface 101, wherein the texture comprises characteristics/properties of the surface 101.
  • the surface 101 may be a surface 101 of substantially any item or object, e.g. a piece of clothing, a canvas of a painting, the hood of a car, etc.
  • the texture of the surface 101 may represent properties such as e.g. fiber texture, fiber pattern, roughness, smoothness, folds, variation in depth, perforations, etc.
  • the controller 110 varies the operating
  • the controller 110 creates a dynamic texture effect which emphasizes the perception of the surface 101 by an observer.
  • the light sources A and B are arranged such that the angle between the incident lights from light source A and light source B is relatively large.
  • the variation of the controller 110 of the operating parameters 111 of the light sources A and B over time leads to a rendition of the surface 101 which may vary
  • controller 110 may further be configured to control the operating parameter 111 such that the dynamic texture effect is neither too small to be visible, nor too large to distract an observer.
  • Fig. 2a is a diagram of the illuminance E v of the light from the light sources A and B on the surface 101 as a function of time t.
  • the controller 110 is configured to vary the operating parameter 111 such that the operating parameter 111 of the light sources A and B varies periodically over time.
  • the contribution to the illuminance on the surface 101 comes merely from the light source A, as the operating parameter 111 of the light source A generates a high illuminance on the surface 101, whereas the operating parameter 111 of the light source B does not contribute to the illuminance on the surface 101 (here, light source B is turned off).
  • the illuminance on the surface at ti is provided by the light from light source A, i.e. coming from the upper left hand side direction, from the viewpoint of an observer.
  • the rendition of the surface 101 is dependent on the light (e.g.
  • parameters 111 of the light sources A and B contribute equally to the illuminance on the surface 101.
  • the illuminance on the surface at t 2 is thus provided by the light from both light sources A and B, and the rendition of the surface 101 is dependent on the texture of the surface 101, which e.g. may render shadows and reflect light in different directions.
  • the contribution to the illuminance on the surface 101 comes merely from the light source B, wherein the operating parameter 111 of the light source B generates a high illuminance on the surface 101, whereas the operating parameter 111 of the light source A does not contribute to the illuminance on the surface 101 (here, light source A is turned off).
  • the illuminance on the surface 101 at t3 is provided by the light from light source B coming from the upper right hand side direction.
  • the rendition of the surface 101 is dependent on the light (e.g. operating parameters 111 and direction of the light) from light source B and the texture of the surface 101, which texture provides a texture effect due to e.g. shadows, reflections, etc., on the surface 101.
  • only light source A contributes to the illuminance on the surface 101, whereas light source B is turned off.
  • the variation of the operating parameters 111 in Fig. 2a exhibits a somewhat truncated periodical profile, wherein the maximum and minimum contribution of illuminance on the surface 101 is maintained for a time interval 122.
  • the operating parameters 111 may be symmetrically shifted in phase and vary with the same frequency and amplitude, wherein the embodiment in Figs. 1 and 2 provides two-phase lighting where the operating parameters 111 of the light sources A and B are shifted 180°.
  • each of the light sources A and B may be different from zero.
  • light source A instead of light source A being turned off at t ls it may still be turned on during the time interval 122 and contribute to the illuminance on the surface 101.
  • Fig. 2b shows an alternative variation of the operating parameters 1 11 of the light sources A and B.
  • the phase-shifted light sources A and B alternately exhibit a step-wise variation, wherein the operating parameters 111 of the light sources A and B change instantly from a turned-off state to a fully turned-on state of the light sources A and B, retain the maximum illuminance on the surface 101 during a time interval 122, then immediately change from the fully turned-on state to the turned-off state, retain the minimum illuminance during the time interval 122, and thereafter cyclically repeat the profile.
  • the operating parameters 111 of the phase-shifted light sources A and B vary cyclically, but here the profile of the variation of the operating parameters 111 is saw-tooth shaped.
  • the profiles of the operating parameters 111 as shown in Figs. 2a-c are provided as examples, and that substantially any other profile of the operating parameters 111 of the light sources A and B (or from more light sources) may be feasible, e.g. a sinusoidal variation.
  • the described periodical variation of the operating parameter 111 of the light sources A and B by the controller 110 provides a rendition of the surface 101 which varies over time.
  • the texture of the surface 101 e.g. fiber texture
  • the controller 110 provides a dynamic texture effect on the surface 101.
  • the controller 110 is further configured to control the operating parameter 111 such that the illuminance on the surface 101 is maintained over time within a predetermined, bounded interval.
  • the interval 120 is represented by dashed lines which over time define a constant interval and within which the illuminance on the surface 101 is maintained. For example, at t l s t 2 , and t 3 , the contribution to obtain total illuminance within interval 120 comes from light source(s) A, A and B, and B, respectively.
  • the controller is configured to maintain the illuminance on the surface 101 substantially constant at level 121 over time, which is indicated as a solid line in the middle of the interval 120. In other words, the controller 110 synchronizes light sources A and B to obtain the maintained illuminance.
  • the controller 110 thus provides illuminance on the surface 101 which renders a subtle, attractive and unobtrusive texture effect.
  • the substantially constant illuminance on the surface 101 further results in the attention of an observer being primarily drawn to the surface 101 instead of to the lighting itself coming from the light sources A and B.
  • the light sources A and B may be arranged/mounted such that an observer will not actually see the light sources A and B, but merely the dynamic texture effect that they provide on the surface 101.
  • the light sources A and B (or more light sources) may be arranged in such a way that an observer may not be able to determine the number of light sources which illuminate the surface 101, resulting in an effect which even further emphasizes that the attention of an observer is drawn to the surface 101 and not to the lighting arrangement itself.
  • the controller 110 may further be configured to actively control one or more light sources (e.g.
  • the controller 110 may be configured to actively control light source A (e.g. based on the illuminance which is measured by illuminance sensor 301), whereas the light source B is set to a fixed cycle.
  • the light sources A and B may be arranged to communicate directly with each other, such that e.g.
  • synchronization, tuning, etc., of the operating parameters 111 may be even further improved.
  • Fig. 3 is a schematic illustration of an exemplifying lighting system 300 for controlling the illuminance on a surface 101.
  • the controller 110 further comprises an illuminance sensor 301 arranged for measuring the illuminance on the surface 101, such that the illuminance is obtained as a measured illuminance.
  • the illuminance sensor 301 may be arranged substantially anywhere, e.g. adjacent one of the light sources A or B, adjacent the surface 101, etc. Furthermore, there may be more than one illuminance sensor 301.
  • the illuminance sensor 301 may be arranged to measure different aspects of the illuminance on the surface 101.
  • the illuminance sensor 301 may measure the spatial distribution of the illuminance on the surface 101, the spatial average of the illuminance over one or more sub-areas of the surface 101, etc.
  • the illuminance sensor 301 may alternatively be a camera which images the illuminance on the surface 101 and/or the texture effect (due to shadows, reflections, etc, as described earlier) on the surface 101.
  • Fig. 4 is a schematic illustration of an exemplifying lighting system wherein the light sources A and B are arranged such that the angle between the incident lights from light source A and light source B is relatively small.
  • the variation of the operating parameters 111 of the light sources A and B over time by the controller 110 leads to a rendition of the surface 101 which only slightly varies over time, leading to a smaller and more subtle texture effect as compared to the texture effect obtained in the embodiment of Fig. 1.
  • the controller 110 may further be configured to control the operating parameter 111 such that the dynamic texture effect is not too small to be visible.
  • the number of light sources may be different from that shown in Fig. 1 and/or Fig. 3.
  • the distances between the light sources A and B may vary, as well as the distance between the light sources and the surface 101.
  • the light sources A and B may alternatively be arranged on the floor and direct their respective light beams obliquely upwards towards the surface 101.

Landscapes

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

Abstract

L'invention concerne un contrôleur (110) permettant de contrôler au moins deux sources de lumière (A, B) agencées pour éclairer une surface (101), les sources de lumière étant agencées en des positions différentes par rapport à la surface. Le contrôleur est configuré pour obtenir l'éclairement sur la surface. En outre, le contrôleur est configuré pour faire varier au moins un paramètre de fonctionnement (111) des au moins deux sources de lumière dans le temps de sorte qu'un rendu de la surface au moyen de la lumière des au moins deux sources de lumière varie dans le temps, le rendu dépendant de la texture de la surface. En outre, le contrôleur est configuré pour contrôler le(s) paramètre(s) de fonctionnement de sorte que l'éclairement sur la surface soit maintenu dans le temps dans un intervalle (120) borné prédéterminé.
PCT/IB2012/056233 2011-11-16 2012-11-07 Effet de texture dynamique WO2013072815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11306500 2011-11-16
EP11306500.7 2011-11-16

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WO2017148793A1 (fr) * 2016-03-02 2017-09-08 Philips Lighting Holding B.V. Procédé de caractérisation d'éclairage d'une surface cible
US20190098729A1 (en) * 2016-03-02 2019-03-28 Philips Lighting Holding B.V. Method for characterizing illumination of a target surface
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WO2005069640A1 (fr) * 2004-01-06 2005-07-28 Koninklijke Philips Electronics, N.V. Codage de commande de scenario de lumiere ambiante
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JP2016537802A (ja) * 2013-11-18 2016-12-01 フィリップス ライティング ホールディング ビー ヴィ 鏡面反射性及び屈折性物体に対して動的照明効果を提供する方法及びシステム
WO2017148793A1 (fr) * 2016-03-02 2017-09-08 Philips Lighting Holding B.V. Procédé de caractérisation d'éclairage d'une surface cible
CN108781494A (zh) * 2016-03-02 2018-11-09 飞利浦照明控股有限公司 用于表征目标表面光照的方法
US20190098729A1 (en) * 2016-03-02 2019-03-28 Philips Lighting Holding B.V. Method for characterizing illumination of a target surface
US10531539B2 (en) 2016-03-02 2020-01-07 Signify Holding B.V. Method for characterizing illumination of a target surface
CN108781494B (zh) * 2016-03-02 2020-11-06 飞利浦照明控股有限公司 用于表征目标表面光照的方法
WO2022232073A1 (fr) * 2021-04-27 2022-11-03 University Of Washington Commande d'éclairage adaptative

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