Light source module and lighting device

Abstract

The embodiment of the utility model provides a light source module and a lighting device, the light source module comprises a red LED light source, a green LED light source, a blue LED light source and a cyan LED light source, the red LED light source is used for emitting red light with the dominant wavelength ranging from 610 nm to 650 nm; the green LED light source is used for emitting green light with the dominant wavelength ranging from 510 nm to 540 nm. The blue LED light source is used for emitting blue light with the dominant wavelength ranging from 440 nm to 470 nm. The blue-green LED light source is used for emitting blue-green light with the peak wavelength ranging from 490 nm to 532 nm, and the radiation intensity of the blue-green light at 480 nm and the radiation intensity of the blue-green light at 550 nm are both larger than or equal to 0.5 times of the radiation intensity of the peak wavelength of the blue-green light. Thus, the cyan LED light source not only helps to improve the utilization efficiency of light energy of the light source module, but also helps to expand the spectral range of the light source module and improve the color rendering index, thereby enhancing the authenticity and accuracy of color rendition, and helping to meet the requirement of professional fields for high color fidelity.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a light source module and a lighting device. Background Art

[0002] High-power LED multi-primary color light sources can directly produce saturated multi-color light without relying on external color filters. Their color temperature and color deviation (Duv) can be accurately set by finely adjusting the output ratio of each color light, supporting infinite color mixing, greatly improving the convenience and flexibility of use, and thus gradually introduced into the field of stage lighting.

[0003] Although traditional RGB three-primary color LED light sources can also be mixed to generate white light, their average color rendering index (Ra) is low at high color temperature, which means that they perform poorly in color reproduction and cannot meet the requirements of professional application scenarios for high color fidelity. Utility Model Content

[0004] The embodiments of the present application provide a light source module and a lighting device to solve the above technical problems.

[0005] The embodiments of the present application achieve the above-mentioned objectives through the following technical solutions.

[0006] An embodiment of the present application provides a light source module, which includes a red LED light source, a green LED light source, a blue LED light source and a cyan LED light source. The red LED light source is used to emit red light with a main wavelength between 610nm and 650nm; the green LED light source is used to emit green light with a main wavelength between 510nm and 540nm; the blue LED light source is used to emit blue light with a main wavelength between 440nm and 470nm; the cyan LED light source is used to emit cyan light with a peak wavelength between 490nm and 532nm, and the radiation intensity of the cyan light at 480nm and 550nm is greater than or equal to 0.5 times the radiation intensity of the peak wavelength of the cyan light.

[0007] In some embodiments, the light source module further includes an amber LED light source, which is configured to emit amber light having a peak wavelength between 560 nm and 620 nm.

[0008] In some embodiments, the combined light emitted by the light source module has a color rendering index greater than 95 within a color temperature range of 3200K to 8000K.

[0009] In some embodiments, the red LED light source, the green LED light source, the blue LED light source, the cyan LED light source, and the amber LED light source are controlled independently of each other.

[0010] In some embodiments, the red LED light source, the green LED light source, the blue LED light source, the cyan LED light source, and the amber LED light source are all LED light-emitting chips.

[0011] In some embodiments, the light source module is also a circuit board, and the red LED light source, the green LED light source, the blue LED light source, the cyan LED light source, and the amber LED light source are all arranged on the same side of the circuit board.

[0012] An embodiment of the present application provides a lighting device, which includes a housing and a light source module according to any one of the above embodiments, wherein the light source module is assembled in the housing.

[0013] In some embodiments, the lighting device further includes a light combining element, which is used to combine red light, green light, blue light and cyan light.

[0014] In some embodiments, the lighting device also includes a light homogenizing element, which is located in the output light path of the red LED light source, the green LED light source, the blue LED light source and the cyan LED light source, and is used to guide the red light, the green light, the blue light and the cyan light to the light combining element.

[0015] In some embodiments, the light homogenizing element includes one or more fly-eye lenses.

[0016] In the light source module and lighting device provided by any of the above embodiments of the present application, the red LED light source of the light source module is used to emit red light with a main wavelength between 610nm and 650nm; the green LED light source is used to emit green light with a main wavelength between 510nm and 540nm; the blue LED light source is used to emit blue light with a main wavelength between 440nm and 470nm; the cyan LED light source is used to emit cyan light with a peak wavelength between 490nm and 532nm, and the radiation intensity of the cyan light at 480nm and 550nm is greater than or equal to 0.5 times the radiation intensity of the peak wavelength of the cyan light. In this way, the cyan light emitted by the cyan LED light source not only helps to improve the utilization efficiency of the light energy of the light source module and simplify the optical path design, but also helps to expand the spectral range of the light source module and improve the color rendering index, thereby enhancing the authenticity and accuracy of color reproduction, and helping to meet the needs of professional fields for high color fidelity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The schematic diagram of the structure of the lighting device provided by some embodiments of the present application is illustrated.

[0019] Figure 2 Example Figure 1 Schematic diagram of relative spectra of a red LED light source, a green LED light source and a blue LED light source of an illumination device of an embodiment.

[0020] Figure 3 Example Figure 1 A schematic diagram of a relative spectrum of a cyan LED light source of a lighting device of an embodiment.

[0021] Figure 4 Example Figure 1 A schematic diagram of a relative spectrum of an illumination device according to an embodiment. DETAILED DESCRIPTION

[0022] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0024] In order to improve the color rendering performance of multi-primary color light sources, related technologies include adding lemon yellow and amber two primary colors to the RGB three-primary color LED light source. Although this solution can increase the color rendering index (CRI) to greater than 95 at low color temperature, at high color temperature, the CRI can only reach about 90, which still cannot meet professional standards (usually requiring CRI greater than 95). Another related technology is to add yellow, yellow and cyan to the RGB three-primary color LED light source to form a six-primary color light source, so that the CRI of white light can be greater than 95 in the color temperature range of 3200K to 8000K. However, the introduction of additional cyan will reduce the luminous flux of the original RGB three-primary color LED light source, that is, affect the brightness output of their respective colors, which contradicts the market's dual demand for high-brightness RGB monochromatic light and high CRI white light.

[0025] See also Figures 1 to 3The embodiment of the present application provides a light source module 100, which includes a red LED light source 11, a green LED light source 12, a blue LED light source 13 and a cyan LED light source 30. The red LED light source 11 is used to emit red light with a main wavelength between 610nm and 650nm, the green LED light source 12 is used to emit green light with a main wavelength between 510nm and 540nm, the blue LED light source 13 is used to emit blue light with a main wavelength between 440nm and 470nm, and the cyan LED light source 30 is used to emit cyan light with a peak wavelength between 490nm and 532nm. The radiation intensity of the cyan light at 480nm and 550nm is greater than or equal to 0.5 times the radiation intensity of the peak wavelength of the cyan light.

[0026] In this way, the cyan light emitted by the cyan LED light source 30 not only helps to improve the utilization efficiency of the light energy of the light source module 100 and simplify the optical path design, but also helps to expand the spectral range of the light source module 100 and improve the color rendering index, thereby enhancing the authenticity and accuracy of color reproduction and helping to meet the needs of professional fields for high color fidelity.

[0027] The color rendering index of the white light emitted by the red LED light source 11, the green LED light source 12 and the blue LED light source 13 at a color temperature of 6500K is as follows: Figure 2 As shown, its average color rendering index Ra is approximately 33. Moreover, at 480nm and 580nm, the radiation intensity of the light is relatively low, the spectrum is in the trough, the spectrum is missing, the color is not saturated enough or deviates from its natural state, and the color reproduction is poor. Figure 2 The value of the horizontal axis represents the wavelength, the unit is nm; the value of the vertical axis represents the radiation intensity, the unit is W / sr.

[0028] like Figure 3 The cyan LED light source 30 is shown as a spectrum diagram, the radiation intensity of the cyan light at 480nm is greater than 0.5 times the radiation intensity of the peak wavelength of the cyan light, and the radiation intensity of the cyan light at 550nm is greater than 0.5 times the radiation intensity of the peak wavelength of the cyan light, so that it can better fill the situation that the radiation intensity of the white light emitted by the red LED light source 11, the green LED light source 12 and the blue LED light source 13 at 480nm and 580nm is low. The cyan LED light source 30 provides additional spectral energy to the areas where the spectrum of the white light emitted by the red LED light source 11, the green LED light source 12 and the blue LED light source 13 is missing or weak, thereby broadening the luminous spectrum range of the light source module 100 and improving the color coverage of the light source module 100, especially in the transition area from blue to green and from green to yellow, making the displayed color richer, more natural and accurate.

[0029] in, Figure 3 The value of the horizontal axis represents the wavelength in nm; the value of the vertical axis represents the percentage of radiation intensity.

[0030] In some embodiments, the light source module 100 may further include an amber LED light source 20, which is used to emit amber light with a peak wavelength between 560nm and 620nm. The amber LED light source 20 can better fill the low radiation intensity of the white light emitted by the red LED light source 11, the green LED light source 12, and the blue LED light source 13 at 560nm and 620nm, provide additional spectral energy for the areas where the spectrum of white light is missing or weak, broaden the luminous spectrum range of the light source module 100, and improve the color coverage of the light source module 100. Figure 4 Shown is a spectrum diagram of light emitted by the red LED light source 11 , the green LED light source 12 , the blue LED light source 13 , the cyan LED light source 30 , and the amber LED light source 20 .

[0031] in, Figure 4 The value of the horizontal axis represents the wavelength, the unit is nm; the value of the vertical axis represents the radiation intensity, the unit is W / sr.

[0032] See Table 1, which is Figure 4 Changes in Ra and R9 of light emitted by the light source module 100 of the embodiment within the color temperature range of 3200K to 8000K, wherein Ra refers to the average color rendering index, and R9 refers to saturated red.

[0033] The color rendering index of the light emitted by the light source module 100 within the color temperature range of 3200K to 8000K is greater than 95, so that the light emitted by the light source module 100 has good color reproduction authenticity and accuracy regardless of high color temperature or low color temperature.

[0034] Table 1

[0035]

[0036]

[0037] In some embodiments, the red LED light source 11, the green LED light source 12, the blue LED light source 13, the amber LED light source 20, and the cyan LED light source 30 are controlled independently of each other. In this way, the light source module 100 can accurately adjust the light output ratio between the red LED light source 11, the green LED light source 12, the blue LED light source 13, the amber LED light source 20, and the cyan LED light source 30 as needed, thereby achieving fine adjustment of the spectrum. This can not only meet the needs of different scenes for light color to achieve better lighting effects, but also optimize energy utilization.

[0038] In some embodiments, the red LED light source 11 , the green LED light source 12 , the blue LED light source 13 , the amber LED light source 20 , and the cyan LED light source 30 are all LED light emitting chips.

[0039] In this way, LED light-emitting chips are small in size and light in weight, and more compact and lightweight products can be designed. They are easy to install in various equipment or small spaces, and are also convenient for more personalized customization in different lighting design schemes. LED light-emitting chips start quickly, do not need to be preheated, and have almost no flicker during operation, which is helpful for application scenarios that require frequent switching or have high requirements for light stability, and can effectively reduce visual fatigue. In addition, LED light-emitting chips can convert electrical energy into light energy more efficiently, greatly reducing energy consumption, and LED light-emitting chips have good weather resistance, can work stably in a wide temperature range, and are not affected by low or high temperatures. They are suitable for various indoor and outdoor lighting environments, including applications under extreme climate conditions.

[0040] In some embodiments, the red LED light source 11, the green LED light source 12, the blue LED light source 13, the amber LED light source 20, and the cyan LED light source 30 can all be disposed on the same side of the circuit board 60. This helps to simplify the wiring complexity of the circuit board 60, reduces the difficulty and cost of assembling the red LED light source 11, the green LED light source 12, the blue LED light source 13, the amber LED light source 20, and the cyan LED light source 30 on the circuit board 60, and also helps the light source module 100 emit uniform light.

[0041] In some embodiments, the amber LED light source 20 and the cyan LED light source 30 may be evenly disposed between the red LED light source 11 , the green LED light source 12 and the blue LED light source 13 , which helps to improve the uniformity of light output from the light source module 100 .

[0042] The embodiment of the present application provides a lighting device 200, which may be a stage light or other lighting fixture. The lighting device 200 includes a housing and a light source module 100 of any of the above embodiments, the light source module 100 is assembled in the housing, and the housing can provide certain protection for the light source module 100.

[0043] In some embodiments, the lighting device 200 may further include a light combining element 40, and the light combining element 40 is used to combine red light, green light, blue light and cyan light.

[0044] In some embodiments, the light combining element 40 can be a convex lens, for example, the light combining element 40 can be a plano-convex lens, and the convex surface of the light combining element 40 can be used to receive light emitted by the red LED light source 11, the green LED light source 12, the blue LED light source 13 and the cyan LED light source 30, and emit the combined light beam from the plane of the light combining element 40.

[0045] In some embodiments, the light combining element 40 can also be used to combine red light, green light, blue light, cyan light and amber light.

[0046] In some embodiments, the lighting device 200 may further include a light homogenizing element 50, which may be located in the light path of the red LED light source 11, the green LED light source 12, the blue LED light source 13, and the cyan LED light source 30, and is used to guide the red light, the green light, the blue light, and the cyan light to the light combining element 40. In this way, the light homogenizing element 50 helps to evenly mix the light emitted by different light sources before light combining, helps to reduce the occurrence of dark areas or excessively bright areas in the light spot of the combined light beam emitted by the light combining element 40, and helps to make the light spot brightness of the combined light beam emitted by the light combining element 40 more uniform.

[0047] In some embodiments, the light homogenizing element 50 includes one or more fly-eye lenses 51. In this way, the multiple tiny lens units in the fly-eye lens 51 can perform fine processing on the incident light, and each tiny lens unit can independently adjust the direction and intensity of the light received by each unit, thereby achieving precise control and optimization of the light, ensuring the uniform distribution and efficient use of the light before light combination. The fly-eye lens 51 can effectively reduce the generation of stray light and light spots, making the output light beam more concentrated, uniform and pure, and improving the light quality of the illuminated area.

[0048] In the present invention, the term "plurality" means greater than or equal to two, for example, the number of the fly-eye lenses may be two, three, four, five or other numbers.

[0049] In this application, unless otherwise clearly specified or limited, the terms "installation", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, it can be only surface contact, or it can be connected through surface contact through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as specific or special structures. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0051] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A light source module, characterized in that: include: A red LED light source, the red LED light source is used to emit red light with a main wavelength between 610nm and 650nm; A green LED light source, the green LED light source is used to emit green light with a main wavelength between 510nm and 540nm; A blue LED light source, the blue LED light source is used to emit blue light with a main wavelength between 440nm and 470nm; as well as A cyan LED light source is used to emit cyan light with a peak wavelength between 490nm and 532nm, and the radiation intensity of the cyan light at 480nm and 550nm is greater than or equal to 0.5 times the radiation intensity of the peak wavelength of the cyan light.

2. The light source module according to claim 1, characterized in that: The light source module also includes an amber LED light source, which is used to emit amber light with a peak wavelength between 560nm and 620nm.

3. The light source module according to claim 2, characterized in that: The combined light emitted by the light source module has a color rendering index greater than 95 within a color temperature range of 3200K to 8000K.

4. The light source module according to claim 2, characterized in that: The red LED light source, the green LED light source, the blue LED light source, the cyan LED light source and the amber LED light source are controlled independently of each other.

5. The light source module according to claim 2, characterized in that: The red LED light source, the green LED light source, the blue LED light source, the cyan LED light source and the amber LED light source are all LED light-emitting chips.

6. The light source module according to claim 2, characterized in that: The light source module also includes a circuit board, and the red LED light source, the green LED light source, the blue LED light source, the cyan LED light source and the amber LED light source are all arranged on the same side of the circuit board.

7. A lighting device, characterized in that: include: case; as well as According to any one of claims 1 to 6, the light source module is assembled on the housing.

8. The lighting device according to claim 7, characterized in that: The lighting device further includes a light combining element, and the light combining element is used to combine the red light, the green light, the blue light and the cyan light.

9. The lighting device according to claim 8, characterized in that: The lighting device also includes a light homogenizing element, which is located in the output light path of the red LED light source, the green LED light source, the blue LED light source and the cyan LED light source, and is used to guide the red light, the green light, the blue light and the cyan light to the light combining element.

10. The lighting device according to claim 9, characterized in that: The light homogenizing element includes one or more fly-eye lenses.

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