LED Modules

Abstract

The invention relates to an LED module (100), comprising: an LED chip (102), which is designed to emit electromagnetic radiation; and at least one luminescent material (104), which is suitable for converting the radiation of the LED chip (102) into light, wherein the emission spectrum of the LED module (100) contains a blue light component and a green light component, wherein the intensity of the blue light component is greater than the CIE intensity at the same color temperature, and wherein the intensity of the green light component is less than the CIE intensity at the same color temperature.

Description

1. Technical Field

[0001] The invention relates to an LED module for generating an emission spectrum, in particular to an LED module or LED lamp emitting mixed color light or white light. 2. Background technology

[0002] LEDs are known from the prior art, the emission spectra of which are composed according to a target compromise. The compromise consists in achieving a maximum light efficiency at a defined minimum color rendering level, for example >80, >90 or even >97.

[0003] By definition, the maximum color rendering for all conceivable test objects can have an emission spectrum which corresponds to a reference spectrum at the same correlated color temperature and the same luminous flux.

[0004] In this case, according to the CIE recommendation, the Planck emission spectrum is used as the reference spectrum at a correlated color temperature (CCT) of less than 5000 K, or, but at a larger CCT, the CIE standard daylight spectrum of the same CCT is used as the reference spectrum.

[0005] The same method was used in the IES TM-30-15 standard, which also used 5000K as the dividing line. However, this was modified in the 2018 updated version TM-30-18, in which 4000K was determined as the dividing line (above this is the daylight spectrum, and below this is the Planck emission spectrum).

[0006] In order to achieve maximum light efficiency, the emission spectrum is omitted from the emission that is less important for the color fidelity of the illuminated (light-colored) test color. This approach optimizes the emission spectrum according to the target color rendering and maximum efficiency. The emission spectrum generated in this way is usually produced as follows: the emitted color is a mixture of a blue component of about 450 nm and other color components with longer wavelengths.

[0007] The above-mentioned blue component is mainly emitted in the wavelength range in which the short-wave-sensitive blue receptors of the human eye have approximately their maximum sensitivity, and is therefore usually produced by blue-light-emitting LED chips, which are optimized for maximum efficiency at a wavelength of about 450nm. In addition, a portion of this light passing through the LED chip usually stimulates one or several luminescent substances to emit colors of longer wavelengths from cyan to red.

[0008] The density of the luminescent material in the light path in front of the short-wave emitting LED is materially adjusted in a certain way so that only a defined proportion of short-wave blue light and a defined proportion of other colors are emitted entirely or at least in a specific direction, thereby producing a spectrum that is relatively close to the target color temperature reference spectrum.

[0009] However, the sky blue component, which is more important with regard to non-visual effects on humans, is usually omitted here, since it cannot be produced in the most efficient way by means of blue light using current luminescent materials, and in addition a stronger orange-red component is required as the opposite pole of the correct target color temperature and the correct white target color coordinates, which however reduces the luminous flux efficiency (the value of the photometric radiation equivalent of the emission spectrum) and thus also the light efficiency.

[0010] Furthermore, artificial spectra with significant intensity deviations in the form of peaks compared to the spectra of natural light sources need to be treated with caution, since in the case of individual differences in cellular sensitivity, very different and possibly hitherto unstudied visual or non-visual effects may accidentally be obtained by individual cells or individuals (humans) due to the position of the peaks.

[0011] The goal is therefore to artificially generate a spectrum that is as continuous as possible, corresponding to natural light sources. In newer solutions using direct emission of LED chips at about 465 nm to 485 nm, the sky-blue share has increased, but this means additional complexity and thus makes the LED modules more expensive. In addition, another peak is generated in the emission spectrum that needs to be treated with caution.

[0012] As an alternative, a solution has been created using chip emission at a very short wavelength of 400 nm to 415 nm and corresponding blue luminescent materials and long-wave luminescent materials. However, due to the broad emission in the violet-blue range, a large red portion is again required as a balance to obtain the desired color coordinates, which, as mentioned above, significantly reduces the light efficiency.

[0013] Due to the above-mentioned compromise, the aim of the optimization scheme is generally always to match the reference spectrum as well as possible at the target color temperature.

[0014] The challenge here is to achieve a good match with the reference spectrum at the target color temperature. The challenge here is also that the light that naturally excites people during the day always has a high color temperature (from 5000 K up to 16000 K, diffused blue sky light in the shade), whereas for aesthetic reasons and custom, warmer color temperatures are usually mostly used indoors (up to 5000 K, rarely above this value).

[0015] In terms of the typical color temperatures used in indoor lighting, the short-wave and, in particular, the important sky-blue component of natural light is significantly reduced if, as has been customary so far, the optical technical values ​​(lumens, candela, lux) are compared at the same level. According to recent findings, the sky-blue component - also known as the melanopsin component, for which a standardized eye sensitivity curve has been developed recently - has a significant influence on the pupil diameter and the chemical brightness adaptation of the eye and, therefore, on visual effects such as glare, contrast vision, visual clarity, etc.

[0016] Due to this special effect of the melanopsin fraction, it is assumed for the present invention that the emission spectra should be compared at the same melanopsin effect (“melanopic illumination” or other).

[0017] Based on the prior art described, the object of the present invention is to provide a new emission spectrum with a low color temperature that is common for indoor use, which is close to the daylight spectrum over a wide range of the emission spectrum curve, thereby making it possible to improve LED lighting.

[0018] These objects and further objects which will be mentioned upon reading the following description or which will become apparent to the person skilled in the art are achieved by the subject matter of the independent claims. The dependent claims develop the central idea of ​​the invention in a particularly advantageous manner.

[0019] 3. Detailed description of the present invention

[0020] According to a first aspect, the present invention relates to an LED module, wherein the LED module comprises: an LED chip, which is designed to emit radiation; at least one luminescent substance, which is suitable for converting the radiation of the LED chip into light, wherein the emission spectrum of the LED module contains a blue light component and a green light component, wherein the intensity of the blue light component is greater than the CIE intensity at the same color temperature, and wherein the intensity of the green light component is less than the CIE intensity at the same color temperature.

[0021] The advantage of this emission spectrum of the LED module is that it is optimized for both visual and non-visual effects.

[0022] Furthermore, the emission spectrum of the LED module is similar to the daylight spectrum. In this way, the emitted light / spectrum contains natural physiological properties. Preferably, the emission spectrum of the LED module is similar to the daylight spectrum with a higher CCT in the important spectral range.

[0023] Furthermore, the emission spectrum has a positive effect on human health, especially for children, and complies with current standards and regulations.

[0024] According to one embodiment, the at least one luminescent substance is designed to at least partially absorb the radiation of the LED chip and to emit light in a wavelength range different from that of the radiation, in particular in a longer wavelength range.

[0025] The emission spectrum of the LED module is produced by mixing the radiation of the LED chip with the radiation of the light emitted by the luminescent substance.

[0026] This has the advantage that the radiation emitted by the LED chip, which may lie in the blue or violet range, for example, is converted into light suitable for the human eye.

[0027] According to one embodiment, the LED module comprises a cover, in particular a globe top, which contains at least one luminescent substance.

[0028] In particular, the spherical dome can be arranged offset from the at least one luminescent substance and in a radiation direction of the LED chip.

[0029] According to one embodiment, the LED chip emits radiation in the violet wavelength range which, in particular, has no UV component.

[0030] Here, according to the WHO definition, UV (ultraviolet) refers to the range below approximately 400 nm.

[0031] According to one embodiment, the emission spectrum of the LED module does not show an upwardly protruding peak in the range from 460 nm to 550 nm, in particular in the blue range.

[0032] That is, there is no sudden increase in intensity at any wavelength in this range. The intensity changes only moderately in this range. The advantage of this is that wavelengths that are unfavorable to individual human sensitivity cannot dominate the emission spectrum because their intensity is small (no spikes).

[0033] According to one embodiment, the emission spectrum of the LED module at a color temperature of 4000 K is substantially equal to the standardized daylight spectrum according to CIE at a higher color temperature, preferably in the main spectral range of 460 nm to 550 nm.

[0034] This has the advantage that the light artificially generated via the LED modules has a natural effect on people (similar to daylight).

[0035] According to one embodiment, at a CCT of 1250K to 1750K lower than the compared natural light, the deviation of the emission spectrum intensity in the range of 460nm to 550nm relative to the natural emission spectrum at each wavelength is a maximum of ±15%.

[0036] At a specific color temperature, preferably 4000 K, the emission spectrum of the LED module 100 may be substantially equal to the standardized daylight spectrum according to CIE at a correlated color temperature at least 1250 Kelvin higher, preferably within 10%, most preferably within 5%.

[0037] At a specific color temperature, the emission spectrum of the LED module 100 may be substantially equal to the standardized daylight spectrum according to CIE at a correlated color temperature of up to 1750 Kelvin, preferably within 10%, and most preferably within 5%.

[0038] The color temperature of the standardized daylight spectrum is preferably in the range of 5300K to 6000K, and particularly preferably 5700K.

[0039] According to one embodiment, at a color temperature of 4000K, the emission spectrum of the LED module 100 is substantially equal to the standardized daylight spectrum according to CIE at a higher color temperature.

[0040] According to one embodiment, in the green range, for example, in the range of 530 nm to 550 nm, at a color temperature of 4000 K, the emission spectrum of the LED module is preferably close to the spectrum of daylight at 5700 K.

[0041] According to one embodiment, the intensity of the emission spectrum in this wavelength range is lower than the intensity of the sunlight spectrum at the same temperature, for example 4000K.

[0042] According to one embodiment, the color rendering index CRI (Color Rendering Index) or Ra of the spectrum of the LED module is higher than 90.

[0043] According to one embodiment, the emission spectrum of the LED module is generated by a pigment-converted LED comprising an LED chip and at least one luminescent substance.

[0044] A pigment-converted LED thus comprises an LED chip which emits electromagnetic radiation and at least one luminescent substance which at least partially converts this radiation into further electromagnetic radiation / light.

[0045] According to one embodiment, the emission spectrum of the LED module is generated by combining the optical properties of a pigment-converted LED, which comprises an LED chip and at least one luminescent substance, with the luminaire.

[0046] For example, the optical properties of the luminaire reduce the violet share of the LED chip or the violet share of the pigment-converted LED.

[0047] According to one embodiment, the intensity of the radiation of the LED chip can be varied by amplitude modulation or pulse width modulation.

[0048] According to one embodiment, the wavelength of the radiation of the LED chip can be varied by the forward current or its temperature.

[0049] According to one embodiment, a first emission peak of the emission spectrum of the LED module exists in the range of 410 nm to 430 nm, and the first emission peak has a smaller intensity than a second emission peak of the emission spectrum at about 460 nm.

[0050] According to one embodiment, there is a third emission peak of the emission spectrum at about 605 nm, the third emission peak having a greater intensity than the first emission peak of the emission spectrum.

[0051] According to one embodiment, there is a third emission peak of the emission spectrum at about 605 nm, the third emission peak having a smaller or larger intensity than the second emission peak of the emission spectrum.

[0052] According to a second aspect, the present invention relates to a method for an LED module, comprising the following steps: emitting radiation and converting the radiation of an LED chip of the LED module into light (with the aid of at least one luminescent substance), wherein the emission spectrum of the LED module contains a blue light component and a green light component, wherein the intensity of the blue light component is greater than the CIE intensity at the same color temperature, and wherein the intensity of the green light component is less than the CIE intensity at the same color temperature.

[0053] 4. Preferred Embodiments

[0054] The following is a detailed description of the accompanying drawings.

[0055] Figure 1 A schematic diagram of an LED module according to an embodiment of the present invention is shown;

[0056] Figure 2 shows different emission spectra and their differences at the same color temperature according to an embodiment of the present invention;

[0057] Figure 3 shows different emission spectra and their differences at the same color temperature according to an embodiment of the present invention;

[0058] Figure 4 shows different emission spectra at different color temperatures and their differences according to an embodiment of the present invention;

[0059] Figure 5 shows different emission spectra at different color temperatures and their differences according to an embodiment of the present invention; and

[0060] Figure 6 A method for an LED module according to one embodiment of the present invention is shown.

[0061] Figure 1 FIG. 1 is a schematic diagram showing an LED module 100 according to an embodiment of the present invention.

[0062] The LED module 100 comprises an LED chip 102, which is designed to emit radiation. The radiation may, for example, comprise blue light or violet light. The radiation preferably does not comprise UV radiation. The LED module 100 further comprises at least one luminescent substance 104, which is suitable for converting the radiation of the LED chip 102 into light, i.e. visible radiation.

[0063] The emission spectrum of the LED module 100 includes a blue light component and a green light component, wherein the intensity of the blue light component is greater than the CRI intensity at the same color temperature, and wherein the intensity of the green light component is less than the CIE intensity at the same color temperature. The emission spectrum of the LED module 100 can be generated by the radiation of the LED chip 102 and the light emitted by the at least one luminescent material 104. The luminescent material 104 can thus partially convert the radiation of the LED chip 102. It is also conceivable to completely convert the radiation of the LED chip 102 into light.

[0064] The emission spectrum of the LED module 100 has the advantage that in the short-wave range below 460 nm (which is potentially more harmful to the eyes) the emission spectrum has a lower intensity and in the orange-red wavelength range the intensity is higher than in the natural emission spectrum, wherein the most important range is the wavelength range from sky blue to lime green, which according to the invention is close to the natural emission spectrum.

[0065] The embodiment of the technical solution (luminaire with optical device, or LED module 100 with / without optical device) of the present invention is based on, for example, an LED chip 102, which has a chip emission peak of 420nm to 425nm (violet), and wherein light is emitted in proportion by the luminescent substance mixture or the luminescent substance 104 through the fluorescence effect. The LED module 100 may also include a plurality of LED chips 102, and at least one luminescent substance 104 converts the electromagnetic radiation of one LED chip 102 or even all LED chips 102.

[0066] With the aid of optical devices (such as reflectors, lenses, diffusers, transparent or semi-transparent materials, or combinations of the above devices), a portion of the violet light of the LED chip 102 can be particularly absorbed, thereby achieving the emission spectrum of the LED module 100 .

[0067] The quantitative composition and distribution of the luminescent material 104 in the reception range of the violet light of the LED chip 102 can be designed so that a spectrum is produced overall, which has the following properties compared to the natural spectrum (Planck to 4800 K, above which is the CIE daylight spectrum) based on the same melanopsin effect:

[0068] - At a CCT of 1250K to 1750K lower than the natural light being compared, the deviation of the emission spectrum intensity from the natural emission spectrum in the range of 460nm to 550nm at each wavelength is a maximum of ±15%.

[0069] At a certain color temperature, preferably 4000 K, the emission spectrum of the LED module 100 is substantially equal to the standardized daylight spectrum according to CIE at a correlated color temperature of at least 1250 Kelvin higher, preferably within 10%, most preferably within 5%.

[0070] At a certain color temperature, the emission spectrum of the LED module 100 is substantially equal to the standardized daylight spectrum according to CIE at a correlated color temperature of at most 1750 Kelvin, preferably within 10%, most preferably within 5%.

[0071] The color temperature of the standardized daylight spectrum is preferably in the range of 5300 K to 6000 K, particularly preferably 5700 K.

[0072] At a color temperature of 4000K, the emission spectrum of the LED module 100 is substantially equal to the standardized daylight spectrum according to CIE at a higher color temperature.

[0073] In this case, in the wavelength range of 460nm to 550nm, except for possible slight ripples, the curves of the emission spectra of different CCTs are nearly parallel. Through this emission spectrum curve, a color rendering level of CRI>=90 and an R9 of about 50 or slightly higher are achieved. In addition, at 4000K, the photometric radiation equivalent of the emission spectrum of the LED module 100 exceeds a value of 290lm / Wrad.

[0074] In this way, a light source (LED module 100 ) is advantageously produced which approaches a daylight equivalent with a higher color temperature in terms of non-visual effects and surprisingly also in terms of visual effects.

[0075] Figure 2 Different emission spectra and their differences at the same color temperature according to a preferred embodiment of the present invention are shown.

[0076] exist Figure 2 An embodiment of the emission spectrum of the LED module 100 according to the present invention is shown in FIG. Figure 2, a curve of a reference emission spectrum of CIE (“D65”) and an emission spectrum (“zg spectrum”) of the LED module 100 according to a preferred embodiment of the present invention are shown.

[0077] exist Figure 2 , the CIE reference emission spectrum is explained by way of example with the aid of the curve D65 for a light color of 6500 K. Instead of the CIE D65 reference emission spectrum, the invention can also be applied to all other CIE reference emission spectra.

[0078] The LED module 100 of the present invention is based on Figure 2 The emission spectrum of the embodiment is characterized in that there is almost no emission in the range below 405nm wavelength. There is a first emission peak in the range of 420nm to 425nm, but the intensity of this first emission peak is less than the intensity of the second emission peak at about 460nm and the third emission peak at about 605nm.

[0079] Preferably, the emission spectrum has emission of almost the same intensity in a range between the emission at about 530 nm and the third emission peak at about 605 nm, which is close to the emission value at about 530 nm.

[0080] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 450 nm to 525 nm is above the curve of the D65 reference emission spectrum, that is, there is an increase in intensity in this range compared to the D65 reference emission spectrum.

[0081] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 525 nm to 580 nm is below the curve of the D65 reference emission spectrum, that is, there is a reduction in intensity compared to the D65 reference emission spectrum in this range.

[0082] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 580 nm to 630 nm is above the curve of the D65 reference emission spectrum, that is, there is an increase in intensity in this range compared to the D65 reference emission spectrum.

[0083] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range above 630 nm is below the curve of the D65 reference emission spectrum, that is, there is a reduction in intensity compared to the D65 reference emission spectrum in this range.

[0084] Figure 3 Shows different emission spectra and their differences at the same color temperature according to a preferred embodiment of the present invention;

[0085] exist Figure 3 An embodiment of the emission spectrum of the LED module 100 according to the present invention is shown in FIG. Figure 3 2 shows a curve of a reference emission spectrum of CIE (“D40”) and an emission spectrum (“zg spectrum”) of the LED module 100 according to a preferred embodiment of the present invention.

[0086] exist Figure 3 , the CIE reference emission spectrum is explained by way of example with the aid of the curve D40 for a light color of 4000 K. Instead of the CIE D40 reference emission spectrum, the invention can also be applied to all other CIE reference emission spectra.

[0087] The LED module 100 of the present invention is based on Figure 3 The emission spectrum of the embodiment is characterized in that there is almost no emission in the range below 405nm wavelength. There is a first emission peak in the range of 420nm to 425nm, but the intensity of this first emission peak is less than the intensity of the second emission peak at about 470nm and the third emission peak at about 605nm.

[0088] Preferably, the emission spectrum has an almost stable emission in the range between the second emission peak at about 470 nm and the emission at about 555 nm, the emission being close to the value of the second emission peak at about 470 nm.

[0089] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 450 nm to 515 nm is above the curve of the D40 reference emission spectrum, that is, there is an increase in intensity in this range compared to the D40 reference emission spectrum.

[0090] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 515 nm to 570 nm is below the curve of the D40 reference emission spectrum, that is, there is a decrease in intensity in this range compared to the D40 reference emission spectrum.

[0091] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 570 nm to 630 nm is above the curve of the D40 reference emission spectrum, that is, there is an increase in intensity in this range compared to the D40 reference emission spectrum.

[0092] According to a particularly preferred variant, the emission spectrum intensity of the LED module according to the present invention in the range above 630 nm is below the curve of the D40 reference emission spectrum, ie, there is a reduction in intensity in this range compared to the D40 reference emission spectrum.

[0093] Figure 4 Different emission spectra at different color temperatures and their differences according to a preferred embodiment of the present invention are shown.

[0094] exist Figure 4 An embodiment of the emission spectrum of the LED module 100 according to the present invention is shown in FIG. Figure 4 , a curve of a reference emission spectrum of CIE (“D80”) and an emission spectrum (“zg spectrum”) of the LED module 100 according to a preferred embodiment of the present invention are shown.

[0095] exist Figure 5 , the CIE reference emission spectrum is explained by way of example with the aid of the curve D80 for a light color of 8000 K. Instead of the CIE D80 reference emission spectrum, the invention can also be applied to other CIE reference emission spectra in the range of 1250 K to 1750 K above the CCT.

[0096] The LED module 100 of the present invention is based on Figure 5 The emission spectrum of the embodiment is characterized in that there is almost no emission in the range below 400nm wavelength. There is a first emission peak in the range of 420nm to 425nm, but the intensity of this first emission peak is less than the intensity of the second emission peak at about 460nm and the third emission peak at about 605nm.

[0097] In the comparison of emission spectra here, instead of luminous flux, the melanopsin effect, ie, the non-visual effect, of the two spectra was used as the basis for comparison.

[0098] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 380 nm to 450 nm is below the curve of the D80 reference emission spectrum, that is, there is a decrease in intensity in this range compared to the D80 reference emission spectrum.

[0099] According to a particularly preferred variant, the emission spectrum intensity of the LED module according to the present invention in the range of 450 nm to 525 nm is above the curve of the D80 reference emission spectrum, ie, there is an increase in intensity in this range compared to the D80 reference emission spectrum.

[0100] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 525 nm to 555 nm is below the curve of the D80 reference emission spectrum, that is, there is a decrease in intensity in this range compared to the D80 reference emission spectrum.

[0101] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 of the present invention in the range of 555 nm to 640 nm is above the curve of the D80 reference emission spectrum, that is, there is an increase in intensity in this range compared to the D80 reference emission spectrum.

[0102] According to a particularly preferred variant, the emission spectrum intensity of the LED module according to the present invention in the range above 640 nm is below the curve of the D80 reference emission spectrum, ie, there is a reduction in intensity in this range compared to the D80 reference emission spectrum.

[0103] A preferred embodiment has very small deviations of the two spectra (preferably within 15%) in the range from 460 nm to 550 nm, since this range is particularly important for non-visual effects.

[0104] Figure 5 Different emission spectra at different color temperatures and their differences according to a preferred embodiment of the present invention are shown.

[0105] exist Figure 5 An embodiment of the emission spectrum of the LED module 100 according to the present invention is shown in FIG. Figure 5 , a curve of a reference emission spectrum of CIE (“daylight”) and an emission spectrum of the LED module 100 according to a preferred embodiment of the present invention (“zg spectrum”) are shown.

[0106] exist Figure 5 , the CIE reference emission spectrum is explained by way of example with the aid of the curve “Daylight” for a light color of 5700 K. Instead of the CIE reference emission spectrum, the invention can also be applied to all other CIE reference emission spectra.

[0107] The LED module 100 of the present invention is based on Figure 5 The emission spectrum "zg spectrum" of the embodiment is characterized in that there is almost no emission in the range below 405nm wavelength. There is a first emission peak in the range of 420nm to 425nm, but the intensity of this first emission peak is less than the second emission peak at about 470nm and the third emission peak at about 605nm.

[0108] According to a particularly preferred variant, the emission spectrum intensity of the LED module according to the present invention in the range of 380 nm to 460 nm is below the curve of the reference emission spectrum, ie, there is a reduction in intensity in this range compared to the reference emission spectrum.

[0109] Preferably, the emission spectrum has almost a stable emission in the range between the second emission peak at about 470 nm and 555 nm, the emission being close to the value of the first emission peak.

[0110] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 according to the present invention in the range of 460 nm to 655 nm is above the curve of the reference emission spectrum, that is, there is an increase in intensity in this range compared to the reference emission spectrum.

[0111] According to a particularly preferred variant, the emission spectrum intensity of the LED module 100 according to the present invention in the range above 655 nm is below the curve of the reference emission spectrum, that is, there is a decrease in intensity in this range compared to the reference emission spectrum.

[0112] A preferred embodiment has very small deviations of the two spectra (preferably within 15%) in the range from 460 nm to 550 nm, since this range is particularly important for non-visual effects.

[0113] Figure 6 A method 700 for an LED module 100 according to a preferred embodiment of the present invention is shown.

[0114] The method 700 for the LED module 100 comprises the following steps:

[0115] - emitting 702 radiation (via LED chip 102);

[0116] -Converting 704 the radiation of the LED chip 102 into light (via at least one luminescent substance), wherein the emission spectrum of the LED module 100 includes a blue light component and a green light component, wherein the intensity of the blue light component is greater than the CIE intensity at the same color temperature, and wherein the intensity of the green light component is less than the CIE intensity at the same color temperature.

[0117] On the one hand, the emission spectrum of the LED module 100 can be generated directly by means of the pigment-converted LED chip 102 .

[0118] On the other hand, the desired emission spectrum can be a result not only of the pigment-converted LED chips 102 themselves, but also of the interaction of these light sources (LED chips 102 and luminescent substances) with the optical properties of the luminaire, which can, for example, reduce the violet component of the primary excitation.

Claims

1. An LED module (100), comprising: - at least one LED chip (102) designed to emit electromagnetic radiation; - at least one luminescent substance (104) suitable for converting the radiation of the LED chip (102) into light, wherein The emission spectrum of the LED module (100) comprises a blue light component and a green light component, wherein The intensity of the blue light component is greater than the intensity of a similar CRI reference spectrum according to CIE recommendations at the same color temperature, and wherein The intensity of the green light component is less than the intensity of a similar CRI reference spectrum at the same color temperature according to the CIE recommendations.

2. The LED module (100) according to claim 1, The at least one luminescent material (104) is designed to at least partially absorb the electromagnetic radiation of the LED chip (102) and emit light in a wavelength range different from the electromagnetic radiation, wherein the emission spectrum of the LED module (100) is generated by mixing the radiation of the LED chip (102) with the radiation of the light emitted by the luminescent material (104).

3. The LED module (100) according to claim 1, The LED module (100) comprises a translucent cover for protecting the LED chip, wherein the translucent cover is a spherical dome and contains the at least one luminescent substance (104).

4. The LED module (100) according to claim 1, The LED chip (102) emits electromagnetic radiation in the violet wavelength range, which has no UV component below 400 nm, and the LED module does not emit light with a wavelength below 400 nm.

5. The LED module (100) according to claim 1, The emission spectrum of the LED module (100) does not show an upwardly protruding peak within the range of 460 nm to 550 nm.

6. The LED module (100) according to claim 1, Wherein, at a color temperature of 4000K, the emission spectrum of the LED module (100) is equal to a standardized daylight spectrum according to CIE with a correlated color temperature at least 1250 Kelvin higher.

7. The LED module (100) according to claim 1, Wherein, at a specific color temperature of 4000 K, the emission spectrum of the LED module (100) deviates within 10% relative to a standardized daylight spectrum according to CIE having a correlated color temperature at least 1250 Kelvin higher.

8. The LED module (100) according to claim 6, Wherein, at a color temperature of 4000K, the emission spectrum of the LED module (100) is equal to a standardized daylight spectrum according to CIE with a correlated color temperature that is at most 1750 Kelvin higher.

9. The LED module (100) according to claim 6, The color temperature of the standardized daylight spectrum is 5700K.

10. The LED module (100) according to claim 1, Wherein, at a color temperature of 4000K, the emission spectrum of the LED module (100) is equal to a standardized daylight spectrum according to CIE at a higher color temperature than 4000K.

11. The LED module (100) according to claim 6, In the wavelength range of 460 nm to 550 nm, the emission spectrum of the LED module (100) deviates from the sunlight spectrum at 5700 K within 15%.

12. The LED module (100) according to claim 6, The intensity of the wavelength emission spectrum of the LED chip is lower than the intensity of the sunlight spectrum at the same temperature.

13. The LED module (100) according to claim 1, The color rendering index (CRI) of the LED module (100) is higher than 90.

14. The LED module (100) according to claim 1, The emission spectrum of the LED module (100) is generated by a pigment conversion LED comprising the LED chip and the at least one luminescent substance (104).

15. The LED module (100) according to claim 1, The emission spectrum of the LED module (100) is generated by combining the optical characteristics of a pigment-converted LED including the LED chip (102) and the at least one luminescent substance with a lamp.

16. The LED module (100) according to claim 1, The intensity of the electromagnetic radiation of the LED chip (102) can be changed by amplitude modulation or pulse width modulation.

17. The LED module (100) according to claim 1, The wavelength of the electromagnetic radiation of the LED chip (102) can be changed by the forward flow.

18. The LED module (100) according to claim 1, There is a first emission peak of the emission spectrum of the LED module in the range of 410 nm to 430 nm, and the first emission peak has a smaller intensity than a second emission peak of the emission spectrum at about 460 nm.

19. The LED module (100) according to claim 18, There is a third emission peak of the emission spectrum at about 605 nm, and the third emission peak has a greater intensity than the first emission peak of the emission spectrum.

20. The LED module (100) according to claim 18, There is a third emission peak of the emission spectrum at about 605 nm, and the third emission peak has a smaller or larger intensity than the second emission peak of the emission spectrum.

21. A method (700) for an LED module (100), comprising: - emitting (702) electromagnetic radiation via the LED chip (102); -Converting (704) the electromagnetic radiation of the LED chip (102) into light at a given color temperature, wherein the emission spectrum of the LED module (100) comprises a blue light component and a green light component, wherein the intensity of the blue light component is greater than the intensity of a similar CRI reference spectrum according to CIE recommendations at the same color temperature, wherein the intensity of the green light component is less than the CIE intensity at the same color temperature, and further wherein the emission spectrum of the LED module is within 10% of the standardized daylight spectrum according to CIE at a higher color temperature.

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