• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a luminaire having a first light source (1) for generating a first light having a first spectral distribution, the first light being represented by a first color locus in a color diagram, and a second light source (2) for generating a second light a second spectral distribution, the second light being represented by a second color location in the color diagram; The second spectral distribution differs from the first spectral distribution. Furthermore, the lamp has a control unit (3) for driving the first light source (1) and the second light source (2), which is designed such that an intensity of the first light can be changed independently of an intensity of the second light. The luminaire is designed such that the first color locus substantially coincides with the second color locus. In this way it can be achieved that by changing the intensities of the first and the second light, the weighting of the two lights can be changed in such a way that the melanopic effect factor of the light emitted by the light changes without the color temperature of the light changing Light changed.
    公开号:AT14371U1
    申请号:TGM416/2013U
    申请日:2013-12-04
    公开日:2015-09-15
    发明作者:Anja Frohnapfel
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    MELANOPIAN LIGHT
    The invention relates to a lamp having a first light source for generating a first light and a second light source for generating a second light, and with a control unit for controlling the first light source and the second light source, which is designed such that an intensity of first light can be changed independently of an intensity of the second light.
    Such a lamp is known from the prior art, in which can be produced with the first light source, a warm white light and the second light source, a cold white light. The color temperature of warm white light (eg 3000 K) is lower than the color temperature of cool white light (eg 7000 K). Thus, the two light sources can be controlled by the control unit in such a way that the color temperature of the total light emitted by the light can be adjusted or adjusted within certain limits.
    As is known, light is not only of importance to a human observer with respect to vision, but generally also has a biological effect beyond that which relates to the circadian behavior of the observer. In the case of the luminaire mentioned, this last-mentioned biological effect component of the light is fundamentally dependent on the color temperature of the light. The equivalent effect of cold white light is higher than that of warm white light, all other things being equal. The reason for this is that the cool white light has a higher proportion of blue light than the warm white light.
    To describe the said biological activity component, the so-called circadian effect factor Acv can be used, which indicates the ratio of the circadian effect of a light to the visual effect of this light. For the circadian effect receptors in the human eye play a role, which contain the protein melanopsin and have a significant influence on the timing of the release of the hormone melatonin. Therefore, the circadian effect factor is also referred to as a melanopic effect factor.
    With the known luminaire, the melanopic or circadian effect factor of the light emitted by the luminaire can thus be changed or adjusted by oppositely changing the intensities of the warm-white light and the cold-white light. However, this goes hand in hand with otherwise constant conditions, with a change in the color temperature of the light.
    The invention has for its object to provide a corresponding improved luminaire; In particular, the luminaire should be suitable for changing the circadian or melanopic effect factor of the emitted light while maintaining the color temperature of the light.
    This object is achieved according to the invention with the object mentioned in the independent claim. Particular embodiments of the invention are indicated in the dependent claims.
    According to the invention, a luminaire is provided which has a first light source for generating a first light having a first spectral distribution, wherein the first light is represented by a first color locus in a color diagram, and a second light source for generating a second light a second spectral distribution, the second light being represented by a second color location in the color diagram; The second spectral distribution differs from the first spectral distribution. Furthermore, the lamp has a control unit for controlling the first light source and the second light source, which is designed such that an intensity of the first light can be changed independently of an intensity of the second light. The luminaire is designed such that the first color locus substantially coincides with the second color locus.
    In other words, the luminaire is designed such that the first light source and the second light source are metameric light sources.
    In this way it can be achieved that by changing the intensities of the first and the second light, the weighting of the two lights can be changed so that thereby changes the melanopic effect factor of the light emitted by the light in total without while changing the color temperature of this light. In principle, it is also possible to achieve that the total intensity, composed of the intensity of the first light and of the second light, remains constant with a change in the melanopic efficacy factor.
    Preferably, the first color locus and the second color locus are located within a seven-step MacAdam ellipse, more preferably within a three-step MacAdam ellipse. In this way, the color impression of the light emitted by the light in total can be kept practically suitably practically constant given a change in the melanopic effect factor.
    Preferably, the first color locus corresponds to a first color temperature and the second color locus corresponds to a second color temperature, wherein the first color temperature differs by less than 500 K from that of the second color temperature. In this way, the lamp can produce a suitable white light. A particularly good constancy of the color impression of the light when changing the melanopic effect factor can be achieved if the first color temperature differs by less than 300 K from that of the second color temperature, more preferably by less than 100 K.
    A particularly suitable light can be achieved if the first color temperature and the second color temperature between 2000 K and 7000 K, preferably between 3000 K and 6000 K. For example, about 4000 K may be provided, this corresponds to a neutral white.
    Preferably, the luminaire is configured such that the first light has a first circadian effect factor and the second light has a second circadian effect factor, such that the first circadian effect factor of the second circadian effect factor increases by more than 0.10, preferably differs by more than 0.20, more preferably by more than 0.30. In this way, the circadian effect of the lamp can be adjusted particularly effective.
    Preferably, the first light source is a first LED light source and the second light source is a second LED light source. This is advantageous both in terms of production technology and with respect to the efficiency of the luminaire.
    Preferably, the first light source comprises at least one LED for generating a red light and at least one LED for generating a white light. In this way, a particularly efficient generation of the first light can be effected.
    Preferably, the first light has a higher color rendering index than the second light.
    Preferably, the lamp further comprises a light exit area for the passage of the first light and the second light. This makes it possible to achieve a particularly suitable superimposition or mixture of the first light with the second light.
    Preferably, the lamp is designed such that a size of the light exit region is variable. By altering the light exit area, the melanopic effect of the light can be changed, with otherwise unchanged conditions: By increasing the light exit area, the melanopic effect can basically be intensified. Preferably, the size of the light exit region is at least a factor of 2 variable, particularly advantageously at least by a factor of 4, in particular at least by a factor of 10.
    The invention will be explained in more detail below with reference to an embodiment and with reference to the drawings. 1 shows a schematic sketch of an embodiment of a luminaire according to the invention, [0022] FIG. 2a shows an example of a first spectral distribution of a first light of the luminaire, [0023] FIG. 2b shows an example of a second spectra distribution of a luminaire second light of the luminaire, [0024] FIG. 3 shows a schematic outline sketch of an embodiment of the luminaire with a variable size light exit region, and [0025] FIG. 4 shows a schematic outline sketch of an embodiment of the luminaire in which the luminaire melanopic effect via a rotary switch, which is arranged on the lamp, can be adjusted.
    Fig. 1 shows a very schematic principle sketch of an embodiment of a lamp according to the invention in the sense of a cross-sectional view. The luminaire has a first light source 1 for generating a first light having a first spectral distribution, which is sketched by way of example in FIG. 2a as a distribution Sjβ) as a function of the wavelength λ. In this case, the first light is represented by a first color location Fl in a color diagram, for example in the known CIE standard color chart from 1931.
    Furthermore, the lamp has a second light source 2 for generating a second light having a second spectral distribution, which is exemplarily outlined in Fig. 2b as a distribution S2 (Ä) as a function of the wavelength λ. In this case, the second light is represented by a second color locus F2 in the color diagram.
    The second spectral distribution S2 (X) differs from the first spectral distribution SrfX), as can be seen by way of example from the sketches of FIGS. 2a and 2b.
    It may be provided that the lamp next to the first light source 1 and the second light source 2 has no further light source. In particular, it may be provided that the total of the light emitted by the lamp light composed only of the first light and the second light.
    Preferably, the lamp is designed so that the first light and the second light are emitted in mutually superimposed manner, that is, the light emitted by the light in total is formed by a mixture of the first light with the second light.
    Furthermore, the lamp has a control unit 3 for driving the first light source 1 and the second light source 2, which is designed such that an intensity of the first light can be changed independently of an intensity of the second light.
    The luminaire is designed such that the first color loc F at least substantially coincides with the second color locus F2.
    In this way it can be achieved that with the control unit 3, the intensities of the first light and the second light can be changed or adjusted so that the melanopic or circadian effect factor of the total output of the lamp light changes, but the color location remains the same. Thus, the melanopic efficacy can be adjusted without the color impression of the emitted light changing. In this case, it is possible by corresponding opposing variation of the two intensities mentioned to change or adjust the melanopic effect of the light emitted by the lamp without the intensity of the total light emitted by the lamp changing. For this purpose, the control unit may in particular be designed to reduce the intensity of the first light and - preferably at the same time - to increase the intensity of the second light and preferably also the other way round accordingly.
    For example, the design may be such that the first color locus Fl and the second color locus F2 are located within a seven-step MacAdam ellipse, preferably within a three-step MacAdam ellipse. A MacAdam ellipse around a reference color locus in the 1931 CIE standard color chart is known to indicate that range of color loci that, under certain conditions, can not be distinguished from the reference color locus by an "average" human observer. It is true that the color perception varies from person to person, so that a MacAdam ellipse in each case only ever allows an approximate statement.
    To indicate a distance of a color locus from a reference color locus, "steps" of MacAdam ellipses can be specified; the number of steps corresponds to a number of standard deviations-the larger the number of steps, the larger the corresponding ellipse and, accordingly, the more a color locus can deviate from the reference color locus. Within a one-step MacAdam ellipse, virtually no one can detect a color difference. In a four-step MacAdam ellipse, a color difference is just noticeable to many people. Within a seven-step MacAdam ellipse, you can see a difference in color for most people.
    Preferably, the first color locus Fl may correspond to a first color temperature CCF and the second color locus F2 of a second color temperature CCT2, wherein the first color temperature CCTi differs by less than 500 K from that of the second color temperature CCT2, preferably by less than 300 K, more preferably less than 100 K. In this way, white light can be generated with the lamp.
    If the first color temperature CCT2 and the second color temperature CCT2 are between 2000 K and 7000 K, a light output in a preferred white tone can be achieved. Preferably, the color temperature is between 3000 K and 6000 K. A "neutral" white tone can be achieved, for example, if the first or second color temperature CCTj or CCT2 is about 4000 K, that is, for example, between 3500 K and 4500 K. 100K in this case corresponds approximately to a four-step MacAdam ellipse).
    Preferably, the luminaire is designed such that the first light has a first circadian effect factor Acvl and the second light has a second circadian effect factor Acv2, such that the first circadian effect factor Acvl of the second circadian effect factor Acv2 is more than 0.10, preferably by more than 0.20, more preferably differs by more than 0.30. The more the circadian effect factor can be adjusted, the more the effect of the light with respect to the circadian influence on a viewer can be changed. The design can also be such that the circadian or melanopic effect factor can be adjusted by more than 1.0.
    Preferably, the first light source 1 is a first LED light source and the second light source 2 is a second LED light source. This is manufacturing technology and with respect to the efficiency of the lamp advantage.
    For example, the first light source 1 may comprise at least one LED for generating a red light and at least one LED for generating a white light. The LED for generating a white light may be, for example, a blue LED with a phosphor, as is known per se and described for example in document DE 10 2007 043 355 A1. The use of such an LED allows a particularly efficient light emission.
    The first light generated by the first light source 1 may have a higher color rendering index than the second light generated by the second light source 2.
    Further preferably, the lamp has a light exit region 4 for the passage of the first light and the second light, as outlined sketched in Fig. 1. The lamp is preferably designed such that a size of the light exit region 4 is variable. For example, the light for this purpose have a diaphragm 5, with which the size of the light exit region 4 can be adjusted, in particular can be adjusted continuously. It can be provided, for example, a mechanical adjustment of the size and / or an optics for adjusting the size with a control.
    In Fig. 1, a first size 41 of the light exit surface and a second size 42 of the light exit surface 4 is shown slightly in perspective indicated, and a first illuminated area 41 ', for example, a wall or a floor of a room when setting the first size 41 and Alternatively, a correspondingly larger second illuminated area 42 'when setting the second size 42.
    For the melanopic effect of light is in addition to the spectral distribution is essential, how large are the areas of the two corresponding illuminated retinal areas of the viewer and also to which areas within the respective retina is. Particularly circadian or melanopically effective is light, which originates from the diagonally above the observer located in the solid angle range and accordingly impinges on a lower portion of the two retina, since here the correspondingly effective receptors are frequently located.
    If the size of the light exit region 4 can now be adjusted, the size of an illuminated region can also be changed in this way and, in this way - with otherwise constant conditions - have a particularly effective influence on the melanopic effect. Preferably, the luminaire is designed such that the size of the light exit region 4 can be changed by at least a factor of 2, in particular by at least a factor of 4, particularly preferably by a factor of at least 10.
    In Fig. 3 - again only very schematically - the first size 41 of the light exit surface and the second size 42 of the light exit surface 4 indicated indicated. Preferably, the control unit 3 can also be designed to change the size of the light exit surface 4.
    4, an embodiment of the lamp is outlined in which a rotary switch 6 is arranged on a housing 7 of the lamp, with which the melanopic or circadian effect factor of the lamp can be adjusted. Preferably, with the rotary switch 6, a potentiometer can be adjusted, which serves as part of the control unit 3 for controlling the two light sources 1,2.
    The luminaire can be designed for example as a downlight or as a surface light or as a combination thereof.
    Thus, two components can be realized with the luminaire, which serve to change the melanopic or circadian effect of the light: first, by changing the spectral distribution of the light emitted by the luminaire as a whole and, second, by the size of the light exit region 4 The melanopic or circadian effect of the luminaire can thus be adjusted and, if appropriate, also be controlled as a function of different parameters, such as, for example, time of day, season; This is also possible individually, since no shift of the color temperature is necessary.
    权利要求:
    Claims (11)
    [1]
    Claims 1. A luminaire comprising - a first light source (1) for generating a first light having a first spectral distribution (S / A), wherein the first light is represented by a first color locus (Fl) in a color diagram, - a second light source ( 2) for generating a second light having a second spectral distribution (S2 (yW, the second light being represented by a second color location (F2) in the color diagram, the second spectral distribution (S2 (X)) being from the first spectral distribution (S1 (A)), - a control unit (3) for driving the first light source (1) and the second light source (2), which is designed such that an intensity of the first light can be changed independently of an intensity of the second light, wherein the luminaire is designed such that the first color locus (Fl) substantially coincides with the second color locus (F2).
    [2]
    2. A luminaire according to claim 1, wherein the first color locus (Fl) and the second color locus (F2) are located within a seven-step MacAdam ellipse, preferably within a three-step MacAdam ellipse.
    [3]
    3. Luminaire according to claim 1 or 2, wherein the first color locus (Fl) corresponds to a first color temperature (CCTj) and the second color locus (F2) of a second color temperature (CCT2), wherein the first color temperature (CCT2) by less than 500 K is different from that of the second color temperature (CCT2), preferably less than 300 K, more preferably less than 100 K.
    [4]
    4. Lamp according to claim 3, wherein the first color temperature (CCT2) and the second color temperature (CCT2) are between 2000 K and 7000 K, preferably between 3000 K and 6000 K.
    [5]
    5. Luminaire according to one of the preceding claims, which is designed such that the first light has a first circadian effect factor (Acvl) and the second light has a second circadian effect factor (Acv2), such that the first circadian effect factor (Acvl) of the second circadian factor (Acv2) differs by more than 0.10, preferably by more than 0.20, more preferably by more than 0.30.
    [6]
    6. Lamp according to one of the preceding claims, wherein the first light source (1) is a first LED light source and the second light source (2) is a second LED light source.
    [7]
    7. Lamp according to one of the preceding claims, wherein the first light source (1) comprises at least one LED for generating a red light and at least one LED for generating a white light.
    [8]
    A luminaire according to any one of the preceding claims, wherein the first light has a higher color rendering index than the second light.
    [9]
    9. Luminaire according to one of the preceding claims, further comprising - a light exit region (4) for the passage of the first light and the second light.
    [10]
    10. Luminaire according to claim 9, which is designed such that a size of the light exit region (4) is variable.
    [11]
    11. Luminaire according to claim 10, wherein the size of the light exit region (4) is variable by at least a factor of 2, preferably at least a factor of 4, more preferably at least by a factor of 10. For this 3-sheet drawings
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    法律状态:
    2020-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20191231 |
    优先权:
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