Spectrum-adjustable lighting device

Abstract

The utility model relates to a spectrum adjusting lighting device which comprises a light source array and a collimating lens module, the light source array is mainly composed of LED emitter units of a plurality of colors, the LED emitter units emit light through the collimating lens module, a color filtering part is arranged between the light source array and the collimating lens module or in the collimating lens module, and the color filtering part is arranged between the light source array and the collimating lens module. The surface of the color filtering piece is provided with a coating layer with color filtering areas of one or more colors, and the color filtering areas on the coating layer can allow light rays with required wavelengths and colors to penetrate and intercept light rays with unneeded wavelengths and colors so as to prevent light rays with unrelated wavelengths and colors from penetrating to affect the light emitting effect of the LED emitter units with other colors. Therefore, the optimal lighting effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of lighting technology, and in particular to a spectrum-adjusting lighting device. Background Art

[0002] Existing stage lighting effects are generally composed of a mixture of LED lamp beads of various colors, including red, green, blue, amber, cyan, light green, etc. Some LED lamp beads have phosphors, and the wavelength of blue light is very close to the excitation wavelength of many types of phosphors. When the blue LED lamp beads are lit, the blue light will affect the excitation efficiency of the phosphors. The stronger the blue light intensity, the stronger the luminous intensity of the excited phosphors. Conversely, reducing the blue light intensity will weaken the luminous intensity of the phosphors. Therefore, the problem we face is that when blue light is irradiated alone or blue light is mixed with other color lights without phosphors, the LED lamp beads with phosphors will be affected by the adjacent blue light or the reflected blue light, causing the phosphors to be excited, which in turn causes the lighting effect of blue light alone or the light efficiency of blue light and other color lights without phosphors to be poor, for example, poor spot uniformity, low color purity, dim color and other defects. Summary of the invention

[0003] The present invention is to solve one of the above-mentioned technical problems and provide a spectrum-adjustable lighting device, which can effectively block blue light and thus reduce the excitation effect of blue light on fluorescent lamp beads.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A spectrum-adjustable lighting device comprises a light source array and a collimating lens module, wherein the light source array is mainly composed of LED emitter units of several colors, and the LED emitter units emit light through the collimating lens module. A color filter is arranged between the light source array and the collimating lens module or in the collimating lens module, and a coating layer having a color filter area of ​​one or more colors is arranged on the surface of the color filter, and the color filter area on the coating layer corresponds to the associated LED emitter unit.

[0006] As a preferred embodiment, it is further defined that there is only a single color filter area on the coating layer, and the single color filter area can suppress the transmission of irrelevant wavelength color light and allow the transmission of relevant wavelength color light, and the filter component is provided with a hollow hole, and the hollow hole is aligned with the LED emitter unit that emits irrelevant wavelength color light so that the irrelevant wavelength color light is emitted from the hollow hole.

[0007] As a preferred embodiment, it is further defined that the single color filter area suppresses the wavelength of transmitted light to be 380-465 nm, and allows the wavelength of transmitted light to be 477-680 nm.

[0008] As a preferred embodiment, it is further defined that the coating layer has two color filter areas, one of which can suppress the transmission of irrelevant wavelength color light and allow relevant wavelength color light to pass through, and the other color filter area is aligned with the LED emitter unit that emits irrelevant wavelength color light so that the irrelevant wavelength color light can be emitted through the color filter area.

[0009] As a preferred embodiment, it is further defined that one color filter area suppresses the wavelength of transmitted light of 380-465nm and allows the wavelength of transmitted light of 477-680nm; another color filter area only allows the wavelength of transmitted light of 380-465nm.

[0010] As a preferred embodiment, it is further defined that the coating layer has color filter areas of two or more colors, each color filter area is aligned with an LED emitter unit of an associated color, and each color filter area only allows the emission light of the LED emitter unit of the associated color to pass through.

[0011] As a preferred embodiment, it is further defined that the light source array includes a red LED emitter unit (R), a green LED emitter unit (G), a blue LED emitter unit (B), a cyan LED emitter unit (C), an amber LED emitter unit (A) and a light green LED emitter unit (M).

[0012] As a preferred embodiment, it is further defined that the irrelevant wavelength color light is emitted by the blue LED emitter unit (B); the relevant wavelength color light is emitted by the red LED emitter unit (R), the green LED emitter unit (G), the amber LED emitter unit (A), the light green LED emitter unit (M) and the cyan LED emitter unit (C).

[0013] As a preferred embodiment, it is further defined that the collimating lens module includes a first lens array, a second lens array and a homogenizer which are arranged in sequence along the light emitting direction of the light source array, each lens of the first lens array corresponds one-to-one to a plurality of the LED emitter units, and each lens of the second lens array corresponds one-to-one to each lens of the first lens array.

[0014] As a preferred embodiment, it is further defined that the color filter is arranged between the first lens array and the second lens array, and the color filter is bonded to the light exit surface of the first lens array.

[0015] As a preferred implementation manner, it is further defined that the color filter is arranged between the second lens array and the homogenizer, and the color filter is bonded to the light exit surface of the second lens array.

[0016] As a preferred implementation manner, it is further defined that the color filter is arranged between the light source array and the first lens array, and the color filter is attached to the upper surface of each LED emitter unit.

[0017] After adopting the above technical scheme, the invention has at least the following beneficial effects: by arranging a coating layer having a color filter area of ​​one or more colors on the surface of the color filter, the color filter area on the coating layer can allow the required wavelength color light to pass through while intercepting unnecessary wavelength color light, so as to prevent irrelevant wavelength color light from passing through and affecting the luminous effect of other color LED emitter units, thereby achieving the best light effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the lighting fixture;

[0019] Figure 2 is a structural diagram of a light source array;

[0020] Figure 3 is a structural diagram showing that a color filter is disposed between a first lens array and a second lens array;

[0021] Figure 4 is a structural diagram showing that a color filter is disposed between a second lens array and a homogenizer;

[0022] Figure 5 is a structural diagram showing that a color filter is disposed between a light source array and a first lens array;

[0023] Figure 6 is a structural diagram of a color filter element in Embodiment 1;

[0024] Figure 7 is a structural diagram of the color filter of Embodiment 2;

[0025] Figure 8 1 is a structural diagram of the color filter of the third embodiment. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments in the present application and the features described in the embodiments may be combined with each other. The present application is further described in detail below in conjunction with the drawings and specific embodiments.

[0027] Embodiment 1: As shown in the attached Figure 1 To Attachment Figure 6 As shown, a spectrum-adjustable lighting device comprises a light source array 1 and a collimating lens module 2. The light source array 1 is mainly composed of LED emitter units of several colors. The light source array 1 comprises a red LED emitter unit (R), a green LED emitter unit (G), a blue LED emitter unit (B), a cyan LED emitter unit (C), an amber LED emitter unit (A) and a light green LED emitter unit (M), etc. The LED emitter units emit light through the collimating lens module 2. A light source array 1 is provided between the light source array 1 and the collimating lens module 2 or in the collimating lens module 2. A color filter 3 that can selectively transmit light is arranged, and a coating layer having a color filter area of ​​one or more colors is arranged on the surface of the color filter 3. The surface of the color filter 3 includes a front side or a back side or both sides. The color filter area corresponds to the LED emitter unit (R) of the associated color and allows the light of the LED emitter unit (R) of the associated color to pass through; the coating layer is a nano film layer, and its material mainly includes metal oxides, silicon, titanium oxide, silicon dioxide, magnesium fluoride, etc., and the required light is limited to be transmitted or cut off by inlaying one or more nano film layers, that is, one or more color filter areas, on the color filter 3. The color filter area on the coating layer can allow the required wavelength color light to pass through while intercepting the unnecessary wavelength color light, so as to prevent the irrelevant wavelength color light from passing through and affecting the light-emitting effect of the LED emitter units of other colors, so as to achieve the best light effect.

[0028] As attached Figure 1 , Attachment Figure 2 and attached Figure 6 As shown, there is only a single color filter area on the coating layer, and the single color filter area can suppress the transmission of irrelevant wavelength color light and allow the transmission of relevant wavelength color light, and the relevant wavelength color light is emitted by the red LED emitter unit (R), the green LED emitter unit (G), the amber LED emitter unit (A), the light green LED emitter unit (M) and the cyan LED emitter unit (C); the single color filter area corresponds to the above-mentioned relevant wavelength color light, and the light with a wavelength of 480-680nm of these color lights can all pass through the coating layer, and the irrelevant wavelength color light is emitted by the blue LED emitter unit (B); the light with a wavelength of 380-465nm of this color light can be cut off by the coating layer, that is, the transmittance of blue light is reduced, effectively weakening the excitation of blue light on the adjacent lamp bead fluorescent powder, thereby reducing the influence of blue light on the relevant wavelength color LED emitter unit.

[0029] As attached Figure 6As shown, the color filter 3 is provided with a hollow hole 31, and the hollow hole 31 is aligned with the LED emitter unit emitting light of irrelevant wavelength color so that the light of irrelevant wavelength color is emitted from the hollow hole 31; that is, blue light can pass through the hollow hole 31, avoiding the required blue light from being cut off by the coating layer, so that the blue light intensity is not weakened, and the blue light will not affect the luminous effect of the relevant wavelength color LED emitter unit.

[0030] As attached Figure 1 As shown, the collimating lens module 2 includes a first lens array 21, a second lens array 22 and a homogenizer 23 which are sequentially arranged along the light emitting direction of the light source array 1. Each lens of the first lens array 21 corresponds one-to-one to a plurality of the LED emitter units, and each lens of the second lens array 22 corresponds one-to-one to each lens of the first lens array 21. The collimating lens module 2 is used to change the optical path of the light source array 1.

[0031] The color filter 3 can be selectively arranged at different positions in the lighting device, specifically in the following design manners:

[0032] Design method 1: as attached Figure 3 As shown, the color filter 3 is arranged between the first lens array 21 and the second lens array 22, and the color filter 3 is attached to the light-emitting surface of the first lens array 21, so that the lens corresponding to the LED emitter unit of the irrelevant wavelength color light is exposed from the hollow hole 31.

[0033] Design method 2: as attached Figure 4 As shown, the color filter 3 is arranged between the second lens array 22 and the homogenizer 23, and the color filter 3 is attached to the light exit surface of the second lens array 22, so that the lens corresponding to the LED emitter unit of the irrelevant wavelength color light is exposed from the hollow hole 31.

[0034] Design method three: as attached Figure 5 As shown, the color filter 3 is arranged between the light source array 1 and the first lens array 21 , and the color filter 3 is attached to the upper surface of each LED emitter unit, and the LED emitter units of irrelevant wavelength color light correspond to the hollow holes 31 .

[0035] The above three settings can all play a role in preventing blue light, so as to reduce the influence of blue light on adjacent LED emitter units of related wavelength colors.

[0036] Embodiment 2: The difference between Embodiment 1 and Embodiment 2 is that a coating layer having two colors of filter areas is inlaid on the color filter 3, that is, the color filter 3 does not need a hollow hole 31, and a blue light film layer is plated at the position of the previous hollow hole 31 to increase the transmittance of blue light in the color filter 3.

[0037] Specifically, as attached Figure 7 As shown, the coating layer has two color filter areas, one of which can suppress the transmission of irrelevant wavelength color light and allow the transmission of relevant wavelength color light. The color filter area corresponds to the LED emitter unit that emits the relevant wavelength color light. The wavelength of the transmitted light suppressed by this color filter area is 380-465nm and the wavelength of the transmitted light allowed is 477-680nm, that is, the anti-blue light film is coated to cut off the blue light; and the other color filter area is aligned with the LED emitter unit that emits irrelevant wavelength color light so that the irrelevant wavelength color light can be emitted through this color filter area. The blue LED emitter unit (B) corresponds to the position of this color filter area. This color filter area is a blue light film layer, which can increase the light transmittance of the blue LED emitter unit (B).

[0038] Embodiment 3: The difference between Embodiment 1 and Embodiment 3 is that the color filter element 3 is inlaid with a coating layer of color filter areas of multiple colors, and the color filter area of ​​each color only transmits light of the same color.

[0039] Specifically, as attached Figure 8 As shown, the coating layer has more than two color filter areas, each color filter area is aligned with the LED emitter unit of the associated color, and each color filter area only allows the emission light of the LED emitter unit of the associated color to pass through. For example, the light source array 1 includes a red LED emitter unit (R), a green LED emitter unit (G), a blue LED emitter unit (B), a cyan LED emitter unit (C), an amber LED emitter unit (A) and a light green LED emitter unit (M), so the area of ​​the color filter 3 corresponding to the red LED emitter unit (R) is coated with a coating layer that only allows red light to pass through, and the area of ​​the color filter 3 corresponding to the green LED emitter unit (G) is coated with a coating layer that only allows green light to pass through, and so on, so that the color filter 3 has different color filter areas to prevent the LED emitter unit of a single color from being affected by the light adjacent to it.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various equivalent changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spectrum-adjustable lighting device, comprising a light source array (1) and a collimating lens module (2), wherein the light source array (1) is mainly composed of LED emitter units of several colors, and characterized in that: A color filter (3) is provided between the light source array (1) and the collimating lens module (2) or in the collimating lens module (2), and a coating layer having a color filter area of ​​one or more colors is provided on the surface of the color filter (3), and the color filter area on the coating layer corresponds to the associated LED emitter unit.

2. The spectrum-adjustable lighting device according to claim 1, characterized in that: The coating layer has only a single color filter area, the single color filter area can suppress the transmission of color light of irrelevant wavelengths and allow the transmission of color light of relevant wavelengths, the color filter element (3) is provided with a hollow hole (31), the hollow hole (31) is aligned with an LED emitter unit that emits color light of irrelevant wavelengths so that the color light of irrelevant wavelengths is emitted from the hollow hole (31).

3. The spectrum-adjustable lighting device according to claim 2, characterized in that: The single color filter region inhibits the transmission of light with a wavelength of 380-465 nm and allows the transmission of light with a wavelength of 477-680 nm.

4. The spectrum-adjustable lighting device according to claim 1, characterized in that: The coating layer has two color filter areas, one of which can suppress the transmission of color light of irrelevant wavelengths and allow the transmission of color light of relevant wavelengths, and the other color filter area is aligned with the LED emitter unit that emits color light of irrelevant wavelengths so that the color light of irrelevant wavelengths can be emitted through the color filter area.

5. The spectrum-adjustable lighting device according to claim 4, characterized in that: One color filter region suppresses the wavelength of light transmitted within the range of 380-465 nm, and allows the wavelength of light transmitted within the range of 477-680 nm; the other color filter region only allows the wavelength of light transmitted within the range of 380-465 nm.

6. The spectrum-adjustable lighting device according to claim 1, characterized in that: The coating layer has color filter areas of two or more colors, each color filter area is aligned with an LED emitter unit of an associated color, and each color filter area only allows the emission light of the LED emitter unit of the associated color to pass through.

7. The spectrum-adjustable lighting device according to any one of claims 2 to 5, characterized in that: The light source array (1) comprises a red LED emitter unit (R), a green LED emitter unit (G), a blue LED emitter unit (B), a cyan LED emitter unit (C), an amber LED emitter unit (A) and a light green LED emitter unit (M).

8. The spectrum-adjustable lighting device according to claim 7, characterized in that: The irrelevant wavelength color light is emitted by the blue LED emitter unit (B); the relevant wavelength color light is emitted by the red LED emitter unit (R), the green LED emitter unit (G), the amber LED emitter unit (A), the light green LED emitter unit (M) and the cyan LED emitter unit (C).

9. The spectrum-adjustable lighting device according to claim 1, characterized in that: The collimating lens module (2) comprises a first lens array (21), a second lens array (22) and a homogenizer (23) which are arranged in sequence along the light emitting direction of the light source array (1); each lens of the first lens array (21) corresponds one-to-one to a plurality of LED emitter units, and each lens of the second lens array (22) corresponds one-to-one to each lens of the first lens array (21).

10. The spectrum-adjustable lighting device according to claim 9, characterized in that: The color filter (3) is arranged between the first lens array (21) and the second lens array (22), and the color filter (3) is arranged in contact with the light-emitting surface of the first lens array (21).

11. The spectrum-adjustable lighting device according to claim 9, characterized in that: The color filter (3) is arranged between the second lens array (22) and the homogenizer (23), and the color filter (3) is arranged in contact with the light exit surface of the second lens array (22).

12. The spectrum-adjustable lighting device according to claim 9, characterized in that: The color filter (3) is arranged between the light source array (1) and the first lens array (21), and the color filter (3) is arranged in contact with the upper surface of each LED emitter unit.

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