CN113864670A - High-color-rendering-index white light source module with variable color temperature - Google Patents
High-color-rendering-index white light source module with variable color temperature Download PDFInfo
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- CN113864670A CN113864670A CN202111120890.6A CN202111120890A CN113864670A CN 113864670 A CN113864670 A CN 113864670A CN 202111120890 A CN202111120890 A CN 202111120890A CN 113864670 A CN113864670 A CN 113864670A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- General Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
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Abstract
The invention provides a color temperature variable high-color-rendering-index white light source module which comprises a light source module, a dichroic group module and a light outlet, wherein the light source module comprises at least one high-color-rendering-index white light source, at least one blue light source and at least one red light source, and the dichroic group module comprises a first dichroic mirror which is transparent to blue, reflective to red, yellow and green or reflective to blue, and a second dichroic mirror which is transparent to red, reflective to blue, yellow and green or reflective to red, transparent to blue, yellow and green; the high-color-rendering-index white light source is used for removing red light and blue light after passing through the first dichroic mirror and the second dichroic mirror, and remaining light in the remaining wave bands, mixing the light with at least one blue light source after passing through the first dichroic mirror and/or the second dichroic mirror, and the light with at least one red light source after passing through the first dichroic mirror or/and the second dichroic mirror, and then emitting the mixed light from the light outlet. The technical scheme of the invention realizes the output of white light with high color rendering index and the simultaneous adjustment of color temperature, does not need to switch light sources when used in different environments, and can realize narrow-band light output.
Description
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to a color temperature variable high-color-rendering-index white light source module.
Background
White light with high color rendering index (hereinafter referred to as "high color rendering index") has wide application in the field of illumination, has wide spectral composition, covers multiple bands, and can provide better color rendering quality. The common high-color-rendering-index white light source module uses one or more high-color-rendering-index white light LED light sources. As shown in fig. 1, each wavelength band of a conventional high color rendering index white LED light source is fixed relative to a spectrum value, so that the color temperature is fixed.
In some environments, the color temperature difference of the light source will also have different effects on the illumination effect. The RGB mixed white light source module can realize color temperature change adjustment by independently controlling three monochromatic LED light sources of red, green and blue, but can not realize high-color-rendering-index white light output; as shown in fig. 2, the conventional RGB mixed white light source module has a large trough in the spectral diagram and discontinuous spectral components, so that high-color-rendering white light output cannot be realized.
When the lighting requirements of different environments are met, the light source modules may need to be switched to achieve an ideal lighting effect. If the white light with high color rendering index is combined with the white light with controllable color temperature, the multifunctional use of a light source module can be realized, and the additional operation caused by switching the light source is avoided.
Disclosure of Invention
Aiming at the technical problems, the invention discloses a high-color-rendering-index white light source module with variable color temperature, which can output high-color-rendering-index white light and adjust color temperature; wherein, high color rendering index means that the color rendering index Ra is more than or equal to 90.
In contrast, the technical scheme adopted by the invention is as follows:
a color temperature variable high color rendering index white light source module comprises a light source module, a dichroic group module and a light outlet, wherein the light source module comprises at least one high color rendering index white light source, at least one blue light source and at least one red light source, and the dichroic group module comprises a first dichroic mirror which is transparent to blue and reflects red, yellow and green or is transparent to blue and red, yellow and green, and a second dichroic mirror which is transparent to red, blue, yellow and green or is transparent to red, blue and yellow and green;
the light of the remaining wave bands remained after the red light and the blue light are removed by the at least one high-color-rendering-index white light source after passing through the first dichroic mirror and the second dichroic mirror, and the light of the at least one blue light source after passing through the first dichroic mirror and/or the second dichroic mirror and the light of the at least one red light source after passing through the first dichroic mirror or/and the second dichroic mirror are mixed and then are emitted from the light outlet;
the at least one high color rendering index white light source is electrically connected with the first driving module, the at least one blue light source is electrically connected with the second driving module, and the at least one red light source is respectively electrically connected with the third driving module; the color temperature is adjusted by controlling the power of the blue light source and the power of the red light source through controlling the second driving module and the third driving module.
Wherein, high color rendering index means that the color rendering index Ra is more than or equal to 90. The first dichroic mirror has high light transmittance to a blue light waveband, high light reflectance to other wavebands or high light reflectance to the blue light waveband and high light transmittance to other wavebands; the second dichroic mirror has high light transmittance to red light wave bands, high light reflectance to other wave bands or high light reflectance to red light wave bands and high light transmittance to other wave bands. One of the at least one blue light source and the at least one red light source passes through the first dichroic mirror and the second dichroic mirror, and the other passes through one of the first dichroic mirror and the second dichroic mirror. The collimated light of the at least one high-color-rendering-index white light source, the at least one blue light source and the at least one red light source forms included angles with the first dichroic mirror and the second dichroic mirror which pass through the collimated light of the at least one high-color-rendering-index white light source and the at least one blue light source.
By adopting the technical scheme, the light of the blue light wave band and the red light wave band in the high-color-rendering-index white light source is filtered or reflected by the first dichroic mirror and the second dichroic mirror, and the light of the rest wave bands is reserved; the blue light wave band and the red light wave band light filtered or reflected by the dichroic mirror are compensated by adding the additional blue light source and the additional red light source, and the color temperature is adjusted by controlling the light power of the additional blue light source and the additional red light source.
As a further improvement of the invention, the first dichroic mirror forms an included angle of 45 degrees with collimated light rays emitted by at least one high color rendering index white light source, at least one blue light source or at least one red light source; the second dichroic mirror forms an included angle of 45 degrees with collimated light rays emitted by at least one high-color-rendering-index white light source, at least one red light source or at least one blue light source.
As a further improvement of the present invention, the first dichroic mirror and the second dichroic mirror are sequentially located in an emission direction of at least one high color rendering index white light source, the at least one blue light source and the at least one red light source are located at one side of the at least one high color rendering index white light source, the at least one blue light source faces the first dichroic mirror, the at least one red light source faces the second dichroic mirror, and the emitted light of the at least one high color rendering index white light source passes through the first dichroic mirror and the second dichroic mirror, and then is mixed with the light of the at least one blue light source passing through the first dichroic mirror and the light of the at least one red light source passing through the second dichroic mirror, and then is emitted from the light outlet.
As a further improvement of the present invention, the light outlet is located in the emitting direction of at least one high color rendering index white light source.
As a further improvement of the present invention, the first dichroic mirror is located between the at least one high color rendering index white light source and the second dichroic mirror.
The position relation among the at least one high-color-rendering-index white light source, the at least one blue light source, the at least one red light source, the first dichroic mirror and the second dichroic mirror and the position of the light outlet are not limited to the above one, and other arrangement combinations and position settings meet the requirements that the light of a blue light wave band and a red light wave band in the high-color-rendering-index white light source is filtered or reflected through the first dichroic mirror and the second dichroic mirror, and the light of the rest wave bands is reserved; the light of the blue light wave band and the light of the red light wave band which are filtered or reflected by the dichroic mirror are compensated by adding the additional blue light source and the additional red light source, and then the mixed light is emitted from the light outlet.
As a further improvement of the invention, the wavelength of the blue light source is 400nm-480nm, and the wavelength of the red light source is 620nm-770 nm.
As a further improvement of the invention, the high-color-rendering-index white light source, the blue light source and the red light source are LED light sources.
Compared with the prior art, the invention has the beneficial effects that:
compared with the common high-color-rendering-index white light source module and the common RGB mixed white light source module, the technical scheme of the invention can realize the simultaneous adjustment of color temperature and the output of high-color-rendering-index white light, can be adjusted and changed according to the requirements of users, can realize the optimal lighting effect under different environmental conditions, and does not need to switch light sources when being used in different environments. In addition, due to the addition of the monochromatic light source, narrow-band light output can be realized, and the practicability is improved.
Drawings
FIG. 1 is a spectrum diagram of a conventional high-color-rendering-index white light source in the prior art.
Fig. 2 is a diagram of a spectral composition of a conventional RGB white-light-mixed light source module according to the prior art.
Fig. 3 is a schematic structural diagram of a color temperature variable white light source module with high color rendering index according to embodiment 1 of the present invention.
FIG. 4 is a spectrum chart of example 1 of the present invention.
Fig. 5 is a schematic structural diagram of a color temperature variable white light source module with high color rendering index according to embodiment 2 of the present invention.
Fig. 6 is a schematic structural diagram of a color temperature variable white light source module with high color rendering index according to embodiment 3 of the present invention.
Fig. 7 is a schematic structural diagram of a color temperature variable white light source module with high color rendering index according to embodiment 4 of the present invention.
Fig. 8 is a schematic structural diagram of a color temperature variable white light source module with high color rendering index according to embodiment 5 of the present invention. The reference numerals include:
1-white light LED light source with high color rendering index, 2-blue light LED light source, 3-red light LED light source, 4-first dichroic mirror, 5-second dichroic mirror and 6-light outlet.
Detailed Description
Preferred embodiments of the present invention are described in further detail below.
As shown in fig. 3 and 4, a color temperature variable high color rendering index white light source module includes a high color rendering index white light LED light source 1, a blue light LED light source 2, a red light LED light source 3, a first dichroic mirror 4 which transmits blue and reflects red, yellow and green, a second dichroic mirror 5 which transmits red and reflects blue, yellow and green, and a light outlet 6. The number of the high-color-rendering-index white light LED light sources 1, the number of the blue light LED light sources 2 and the number of the red light LED light sources 3 are at least one. The first dichroic mirror 4 has high light transmittance to blue light wave bands, high light reflectance to other wave bands or high light reflectance to blue light wave bands and high light transmittance to other wave bands; the second dichroic mirror 5 has high light transmittance to red light band, high light reflectance to other bands or high light reflectance to red light band, and high light transmittance to other bands. The color rendering index Ra of the high color rendering index white light LED light source 1 is more than or equal to 90, the wavelength of light emitted by the blue light LED light source 2 is 400nm-480nm, and the wavelength of light emitted by the red light LED light source 3 is 620nm-770 nm.
The first dichroic mirror 4 and the second dichroic mirror 5 are sequentially located in the emitting direction of the high-color-rendering-index white light LED light source 1 and form an included angle with the light emitting direction of the high-color-rendering-index white light LED light source 1, the blue light LED light source 2 and the red light LED light source 3 are located on one side of the high-color-rendering-index white light LED light source 1, the blue light LED light source 2 faces the first dichroic mirror 4, the red light LED light source 3 faces the second dichroic mirror 5, and after the emergent light of the high-color-rendering-index white light LED light source 1 passes through the first dichroic mirror 4 and the second dichroic mirror 5, the emergent light is mixed with the light of the blue light LED light source 2 passing through the first dichroic mirror 4 and the light of the red light LED light source 3 passing through the second dichroic mirror 5 and then is emitted from the light outlet 6.
The first dichroic mirror 4 and the second dichroic mirror 5 are arranged at an included angle of 45 degrees with the collimated light rays emitted by each light source. The light outlet 6 is positioned in the emitting direction of the high-color-rendering-index white-light LED light source 1. The first dichroic mirror 4 is located between the at least one high color rendering index white light LED light source 1 and the second dichroic mirror 5. Broad spectrum white light emitted by the high color rendering index white light LED light source 1 passes through the first dichroic mirror 4, wherein light in a blue light waveband is reflected by the first dichroic mirror 4 and is emitted to the direction of the non-light-emitting port 6; the light of the rest wave bands continues to pass through the second dichroic mirror 5, wherein the light of the red wave bands is reflected by the second dichroic mirror 5 and is emitted to the direction of the non-light outlet 6; the light in the remaining wavelength range is directed to the light exit 6. Blue light emitted by the blue light LED light source 2 is reflected by the first dichroic mirror 4 and emitted to the light outlet 6; the red light emitted by the red light LED light source 3 is reflected by the second dichroic mirror 5 and emitted to the light outlet 6. Finally, the light emitted by the three light sources is combined into a beam before the light outlet 6 and then is converged and emitted from the light outlet 6.
The high-color-rendering-index white-light LED light source 1 is electrically connected with the first driving module, the blue-light LED light source 2 is electrically connected with the second driving module, and the red-light LED light source 3 is respectively electrically connected with the third driving module. The power and the switch of the three light sources can be independently controlled, and the color temperature can be adjusted by adjusting the power of the blue light LED light source 2 and the power of the red light LED light source 3. And narrow-band light output can be realized by independently controlling the switches of the white light LED light source, the blue light LED light source 2 and the red light LED light source 3.
Example 2
As shown in fig. 5, the present embodiment is different from embodiment 1 in that the first dichroic mirror 4 is a dichroic mirror that transmits red, yellow and green through blue, the second dichroic mirror 5 is a dichroic mirror that transmits red, blue, yellow and green through blue, and the light outlet 6 is located in the emitting direction of the red LED light source 3.
A first dichroic mirror 4 which transmits blue, reflects red, yellow and green or transmits blue, transmits red, reflects blue, yellow and green or transmits red, reflects blue, yellow and green, and a second dichroic mirror 5 which transmits red, reflects blue, yellow and green or transmits red, blue, yellow and green
Example 3
As shown in fig. 6, on the basis of embodiment 2, the present embodiment is different in that positions of the blue LED light source 2 and the red LED light source 3 are interchanged, positions of the first dichroic mirror 4 and the second dichroic mirror 5 are interchanged, the first dichroic mirror 4 is a dichroic mirror which transmits blue and reflects red, yellow and green, the second dichroic mirror 5 is a dichroic mirror which transmits red, blue, yellow and green, and the light outlet 6 is located in the emitting direction of the blue LED light source 2.
Example 4
As shown in fig. 7, the difference of this embodiment is that, on the basis of embodiment 1, the high color rendering index white LED light source 1 and the blue LED light source 2 are interchanged, and the light outlet 6 is located in the emitting direction of the red LED light source 3.
Example 5
As shown in fig. 8, on the basis of embodiment 1, the present embodiment is different in that the high color rendering index white light LED light source 1 is located at the position of the blue light LED light source of embodiment 1, the blue light LED light source 2 is located at the position of the red light LED light source of embodiment 1, the red light LED light source 3 is located at the position of the high color rendering index white light LED light source of embodiment 1, the positions of the first dichroic mirror 4 and the second dichroic mirror 5 are interchanged, and the light outlet 6 is located in the emitting direction of the red light LED light source 3.
That is, high apparent white light LED light source 1, blue light LED light source 2 all lie in one side of ruddiness LED light source 3, blue light LED light source 2 lies in the outside of high apparent white light LED light source 1, and second dichroic mirror 5 lies in the one side that is close to ruddiness LED light source 3, lies in between first dichroic mirror 4 and ruddiness LED light source 3 promptly, and first dichroic mirror 4, second dichroic mirror 5 are 45 contained angles with the collimation light that ruddiness LED light source 3 sent. The included angle between the collimated light emitted by the high-color-rendering-index white light LED light source 1 and the second dichroic mirror 5 and the included angle between the blue light LED light source 2 and the first dichroic mirror 4 are 45 degrees.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. The utility model provides a high apparent white light source module that indicates of variable colour temperature which characterized in that: the high-color-rendering-index white light source comprises a light source module, a dichroic group module and a light outlet, wherein the light source module comprises at least one high-color-rendering-index white light source, at least one blue light source and at least one red light source, and the dichroic group module comprises a first dichroic mirror which is transparent to blue and reflects red, yellow and green or is transparent to blue and yellow and green, and a second dichroic mirror which is transparent to red, reflects blue, yellow and green or is transparent to red, blue and yellow and green;
the high-color-rendering-index white light source is used for removing red light and blue light after passing through the first dichroic mirror and the second dichroic mirror, and remaining light in wave bands, mixing the light with the blue light source passing through the first dichroic mirror and/or the second dichroic mirror and the light with the red light source passing through the first dichroic mirror and/or the second dichroic mirror, and then emitting the mixed light from the light outlet; wherein the color rendering index Ra of the high color rendering index white light source is more than or equal to 90;
the at least one high color rendering index white light source is electrically connected with the first driving module, the at least one blue light source is electrically connected with the second driving module, and the at least one red light source is respectively electrically connected with the third driving module; the color temperature is adjusted by controlling the power of the blue light source and the power of the red light source through controlling the second driving module and the third driving module.
2. The color temperature-variable high-color-rendering-index white light source module according to claim 1, wherein: the first dichroic mirror forms an included angle of 45 degrees with collimated light rays emitted by at least one high-color-rendering-index white light source, at least one blue light source or at least one red light source; the second dichroic mirror forms an included angle of 45 degrees with collimated light rays emitted by at least one high-color-rendering-index white light source, at least one red light source or at least one blue light source.
3. The color temperature variable high-color-rendering-index white light source module according to claim 2, wherein: the first dichroic mirror and the second dichroic mirror are sequentially located in the emitting direction of at least one high-color-rendering-index white light source, the at least one blue light source and the at least one red light source are located on one side of the at least one high-color-rendering-index white light source, the at least one blue light source faces the first dichroic mirror, the at least one red light source faces the second dichroic mirror, and the emergent light of the at least one high-color-rendering-index white light source is mixed with the light of the at least one blue light source passing through the first dichroic mirror and the light of the at least one red light source passing through the second dichroic mirror and then emitted from a light outlet after passing through the first dichroic mirror and the second dichroic mirror.
4. The color temperature-variable high-color-rendering-index white light source module according to claim 3, wherein: the first dichroic mirror is positioned between the at least one high-color-rendering-index white light source and the second dichroic mirror.
5. The color temperature-variable high-color-rendering-index white light source module according to claim 3, wherein: the wavelength of the blue light source is 400nm-480nm, and the wavelength of the red light source is 620nm-770 nm.
6. The color temperature-variable high-color-rendering-index white light source module according to claim 3, wherein: the high-color-rendering-index white light source, the blue light source and the red light source are LED light sources.
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| CN202111120890.6A CN113864670A (en) | 2021-09-24 | 2021-09-24 | High-color-rendering-index white light source module with variable color temperature |
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| CN202111120890.6A CN113864670A (en) | 2021-09-24 | 2021-09-24 | High-color-rendering-index white light source module with variable color temperature |
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| CN209182644U (en) * | 2018-12-19 | 2019-07-30 | 广景视睿科技（深圳）有限公司 | A kind of red illumination light source and projection lighting light source |
| CN112904549A (en) * | 2021-01-29 | 2021-06-04 | 武汉联影智融医疗科技有限公司 | Multi-color mixed light illumination method and system |
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2021
- 2021-09-24 CN CN202111120890.6A patent/CN113864670A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080291672A1 (en) * | 2007-05-25 | 2008-11-27 | Young Optics Inc. | Light source module |
| CN202598208U (en) * | 2012-04-24 | 2012-12-12 | 厦门多彩光电子科技有限公司 | White light light-emitting diode (LED) with adjustable color-temperature and color-rendering index |
| CN202886821U (en) * | 2012-08-05 | 2013-04-17 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN202756978U (en) * | 2012-08-12 | 2013-02-27 | 红蝶科技(深圳)有限公司 | White light-emitting diode (LED) lighting device adjustable in color temperature |
| CN209182644U (en) * | 2018-12-19 | 2019-07-30 | 广景视睿科技（深圳）有限公司 | A kind of red illumination light source and projection lighting light source |
| CN112904549A (en) * | 2021-01-29 | 2021-06-04 | 武汉联影智融医疗科技有限公司 | Multi-color mixed light illumination method and system |
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