Light source module

Abstract

Embodiments of the present application provide a light source module. A plurality of LED light-emitting units distributed in an array are arranged on a light source substrate of the light source module. At least one LED light-emitting unit comprises an LED chip and a fluorescent device. The fluorescent device is used for receiving emergent light from the LED chip and converting the emergent light into fluorescence. A collection lens group comprises a plurality of lens units. The plurality of lens units are arranged on light exit paths of the plurality of LED light-emitting units in one-to-one correspondence. The lens units are used for collecting the emergent light from the LED light-emitting units. At least one filter located on a light path of the fluorescence is provided. The filter filters at least one emergent light from the plurality of LED light-emitting units. The filter is used for reflecting the emergent light from the LED chip and transmitting the fluorescent. The filter can filter out a spectrum affecting color saturation, for example, emergent light from a single LED chip, so that when a corresponding fluorescent device is excited by using a short wave emitted from the LED chip and a wide-spectrum color is generated by means of wavelength conversion, the color is purer, thereby facilitating improvement of color saturation of the fluorescence.

Description

Light source module TECHNICAL FIELD

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

[0002] In the theater, stage and other scenes often need to be colorful, gorgeous light to match, and the traditional white light obviously can not meet this requirement, so the multi-primary color LED light source product has emerged as the times require. According to the needs of the application, there are a variety of different products to choose from, such as three primary colors, five primary colors, seven primary colors and others, the more primary colors, the more colorful, the better the light performance. At the same time, the color saturation (color purity) of the single primary color should also be fully taken into account, because the colorful light is based on a single primary color, and the single primary color light only has a higher color saturation (purity), and the color is more pure, and the demonstration effect is better. SUMMARY

[0003] Embodiments of the present application provide a light source module to solve the above technical problems.

[0004] Embodiments of the present application achieve the above-mentioned purposes by the following technical solutions.

[0005] Embodiments of the present application provide a light source module, comprising: a light source substrate, a plurality of LED light emitting units are arranged in an array on the light source substrate, at least one of the LED light emitting units comprises an LED chip and a fluorescent device, the fluorescent device is used to receive the emitted light of the LED chip and convert it into fluorescent light; a collection lens group, the collection lens group comprises a plurality of lens units, a plurality of lens units are arranged one by one in the light path of a plurality of LED light emitting units, the lens unit is used to collect the emitted light of the LED light emitting unit; and at least one filter located in the light path of the fluorescent light, the filter filters at least one emitted light of a plurality of LED light emitting units, wherein the filter is used to reflect the emitted light of the LED chip and transmit the fluorescent light.

[0006] In some embodiments, the filter is arranged on the light emitting surface of the fluorescent device.

[0007] In some embodiments, the lens unit comprises a first collimating lens and a second collimating lens, the first collimating lens and the second collimating lens are arranged in the light path of the LED light emitting unit in sequence; at least one filter is arranged on the light entrance surface or the light exit surface of the first collimating lens or the second collimating lens.

[0008] In some embodiments, the light source module further comprises a light-transmitting cover, the light-transmitting cover is arranged on the light source substrate; at least one of the light filters is arranged on the surface of the region corresponding to the fluorescent light of the light-transmitting cover.

[0009] In some embodiments, the light source module further comprises a light homogenizing device, the light homogenizing device is located in the light path of the collection lens group and is used for homogenizing the light beam; at least one of the light filters is arranged on the surface of the light entrance region corresponding to the fluorescent light of the light homogenizing device.

[0010] In some embodiments, the light source module further comprises a light homogenizing device, the light homogenizing device is located in the light path of the collection lens group and is used for homogenizing the light beam; the lens unit comprises a first collimating lens and a second collimating lens; the light filter is located between the fluorescent light device and the lens unit; or the light filter is located between the first collimating lens and the second collimating lens; or the light filter is located between the collection lens group and the light homogenizing device.

[0011] In some embodiments, at least one of the LED light emitting units is used to emit first color fluorescent light, the light filter comprises a first light filter, and the first light filter is arranged in the light path of the first color fluorescent light.

[0012] In some embodiments, the first color fluorescent light is amber light or lime light, when the first color fluorescent light is amber light, the first light filter is used to reflect light with a wavelength of 520 nm or less and transmit light with a wavelength of 520 nm or more; when the first color fluorescent light is lime light, the first light filter is used to reflect light with a wavelength of 480 nm or less and transmit light with a wavelength of 480 nm or more.

[0013] In some embodiments, at least one of the LED light emitting units is used to emit second color fluorescent light, the light filter comprises a second light filter, and the second light filter is arranged in the light path of the second color fluorescent light.

[0014] In some embodiments, the first color fluorescent light is amber light, the first light filter is used to reflect light with a wavelength of 520 nm or less and transmit light with a wavelength of 520 nm or more; the second color fluorescent light is lime light, and the second light filter is used to reflect light with a wavelength of 480 nm or less and transmit light with a wavelength of 480 nm or more.

[0015] In any of the above embodiments of the present application, the light source substrate of the light source module is provided with a plurality of LED light emitting units arranged in an array, at least one of the LED light emitting units comprising an LED chip and a fluorescent device, the fluorescent device being configured to receive the light emitted by the LED chip and convert it into fluorescent light; a plurality of lens units of the collection lens set are arranged one-to-one in the light paths of the plurality of LED light emitting units, the lens units being configured to collect the light emitted by the LED light emitting units; and at least one filter located in the light path of the fluorescent light, the filter being configured to filter at least one of the lights emitted by the plurality of LED light emitting units, wherein the filter is configured to reflect the light emitted by the LED chip and transmit the fluorescent light. The filter can filter out the light spectrum that affects the color saturation, such as the light emitted by a single LED chip, so that the color produced by the LED chip through excitation of the corresponding fluorescent device by short-wave light and wavelength conversion is more pure, which helps to improve the color saturation of the fluorescent light and further improve the accuracy of the light emitted by the entire light source module. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present application, the drawings required in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0017] FIG. 1 shows a spectral curve diagram of a plurality of primary colors.

[0018] FIG. 2 shows a spectral curve diagram of light formed by blue light exciting different concentrations of amber fluorescent powder.

[0019] FIG. 3 shows a spectral curve diagram of light formed by blue light exciting different concentrations of greenish-yellow fluorescent powder.

[0020] FIG. 4 shows a structural diagram of a light source module according to some embodiments of the present application.

[0021] FIG. 5 shows a structural diagram of an LED light emitting unit and a filter of a light source module according to some embodiments of the present application.

[0022] FIG. 6 shows a curve diagram of spectral changes of amber light before and after adding a filter of a light source module according to some embodiments of the present application.

[0023] FIG. 7 shows a curve diagram of spectral changes of greenish-yellow light before and after adding a filter of a light source module according to some embodiments of the present application.

[0024] FIG. 8 shows a structural diagram of an LED light emitting unit and a filter of a light source module according to some embodiments of the present application.

[0025] FIG. 9 illustrates a structure diagram of a lens unit and a filter of a light source module according to some embodiments of the present application.

[0026] FIG. 10 illustrates a structure diagram of a lens unit and a filter of a light source module according to some other embodiments of the present application.

[0027] FIG. 11 illustrates a structure diagram of a light source module according to some other embodiments of the present application.

[0028] FIG. 12 illustrates a structure diagram of a light source module according to some other embodiments of the present application.

[0029] FIG. 13 illustrates a structure diagram of a light source module according to some other embodiments of the present application.

[0030] FIG. 14 illustrates a structure diagram of a light source module according to some other embodiments of the present application.

[0031] FIG. 15 illustrates a structure diagram of a light source module according to some other embodiments of the present application.

[0032] FIG. 16 illustrates a structure diagram of a light source module according to some other embodiments of the present application. DETAILED DESCRIPTION

[0033] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme 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. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor shall fall within the scope of protection of the present application.

[0034] The technical scheme 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.

[0035] As shown in FIG. 1, it is a spectrum curve diagram of each base color of a commonly used multi-base color LED light source, wherein the value of the horizontal coordinate in FIG. 1 represents wavelength, with unit of nm; and the value of the vertical coordinate represents relative spectral power. As can be seen from FIG. 1, there is a large interval between green light 001 and red-orange light 002, and the light color in the interval is amber light 003 and lime light 004. The color saturation of the amber light and the lime light in the prior art is relatively low, which cannot meet the requirement of color richness of the overall light of the LED light source.

[0036] In the current lighting industry, the amber light / lime light generating scheme is mainly to excite amber phosphor / lime phosphor by the excitation light emitted by the LED chip to generate amber light / lime light. However, due to the concentration of the phosphor, the packaging process and other problems, some excitation light will leak out, thereby affecting the color saturation of the amber light / lime light, resulting in a relatively low color saturation, generally only about 0.7.

[0037] The present application inventors have found that, in the case of exciting amber phosphor / lime phosphor by a blue light LED chip, the amber light / lime light excited is blue light residual, as shown in FIGS. 2-3. The spectrum of FIG. 2 is divided into two parts, the left is the blue light emitted by the blue light LED chip, and the right is the amber fluorescence generated by exciting the amber phosphor by the blue light. The spectrum of FIG. 3 is also divided into two parts, the left is the blue light emitted by the blue light LED chip, and the right is the lime fluorescence generated by exciting the lime phosphor by the blue light.

[0038] Referring to FIGS. 4 and 5, the embodiment of the present application provides a light source module 100, which includes a light source substrate 110 and a collection lens set 120, the collection lens set 120 is used to receive the outgoing light of the light source substrate 110.

[0039] In some embodiments, the light source substrate 110 is provided with a plurality of LED light emitting units 130 distributed in an array. At least one LED light emitting unit 130 includes an LED chip 131 and a fluorescent device 132, the fluorescent device 132 is used to receive the outgoing light of the LED chip 131 and convert it into fluorescent light.

[0040] In some embodiments, the light source substrate 110 can be a circuit board, for example, the light source substrate 110 can be a PCB circuit board.

[0041] In some embodiments, the LED chip 131 can be a blue light LED chip, a red light LED chip or a green light LED chip.

[0042] In some embodiments, the fluorescent device 132 can be a reflective fluorescent device or a transmissive fluorescent device.

[0043] In some embodiments, among the plurality of LED light units 130, a part of the LED light units 130 can include the LED chip 131 and the phosphor device 132, and another part of the LED light units 130 can not be configured with the phosphor device 132, and directly emit light by electrical driving. For example, there can be one, two, three, four, five, six, seven or other number of LED light units 130 including the LED chip 131 and the phosphor device 132. In other embodiments, each of the plurality of LED light units 130 can include the LED chip 131 and the phosphor device 132.

[0044] In some embodiments, at least one of the LED light units 130 is configured to emit blue light, which helps the light source module 100 to emit blue light, and helps the light source module to have more colorful emitted light. In the case that the LED chip 131 is a blue LED chip, the LED light unit 130 configured to emit blue light can not be configured with the phosphor device 132.

[0045] In some embodiments, in the case that the LED chip 131 is a blue LED chip, at least one of the phosphor devices 132 of the LED light units 130 is configured to convert the blue light received from the LED chip 131 into red light, and / or, at least one of the phosphor devices 132 of the LED light units 130 is configured to convert the blue light received from the LED chip 131 into green light, and / or, at least one of the phosphor devices 132 of the LED light units 130 is configured to convert the blue light received from the LED chip 131 into cyan light. In this way, the light source module 100 can emit at least one of red light, green light and cyan light, and helps the light source module to have more colorful emitted light.

[0046] In the case that the LED chip 131 is a blue LED chip, the blue light emitted by the LED chip 131 excites the red phosphor on the phosphor device 132 to generate red light. The blue light emitted by the LED chip 131 excites the green phosphor on the phosphor device 132 to generate green light. The blue light emitted by the LED chip 131 excites the cyan phosphor on the phosphor device 132 to generate cyan light.

[0047] In some embodiments, the collection lens group 120 includes a plurality of lens units 121, and the plurality of lens units 121 are arranged one by one in the light path of the plurality of LED light units 130. The lens unit 121 is configured to collect the emitted light of the LED light unit 130.

[0048] In some embodiments, the lens unit 121 can include a first collimating lens 1211 and a second collimating lens 1212, the first collimating lens 1211 and the second collimating lens 1212 are arranged in sequence in the light path of the LED light-emitting unit 130, the radius of the second collimating lens 1212 is greater than the radius of the first collimating lens 1211, so that the spot of the light emitted by the LED light-emitting unit 130 is reduced after passing through the first collimating lens 1211 and the second collimating lens 1212 in sequence.

[0049] In some embodiments, the light entrance surface of the first collimating lens 1211 can be a plane or a convex surface, and the light exit surface of the first collimating lens 1211 can be a convex surface.

[0050] In some embodiments, the light entrance surface of the second collimating lens 1212 can be a plane or a convex surface, and the light exit surface of the second collimating lens 1212 can be a convex surface.

[0051] In some embodiments, the light source module 100 can further include at least one filter 140, and the at least one filter 140 is located in the light path of the fluorescent light. The filter 140 filters at least one of the light emitted by the plurality of LED light-emitting units 130. The filter 140 is configured to reflect the light emitted by the LED chip 131 and transmit the fluorescent light. In this way, the filter 140 can filter out the light spectrum that affects the color saturation, such as the light emitted by the single LED chip 131, so that the color of the light emitted by the light source module 100 is more pure, which helps to improve the color saturation of the fluorescent light and further improves the accuracy of the light emitted by the entire light source module 100.

[0052] In some embodiments, at least one of the LED light-emitting units 131 is configured to emit first color fluorescent light, and at least one first filter 141 is located in the light path of the first color fluorescent light. The first color fluorescent light is amber light or lime light.

[0053] For example, in the case of the first color fluorescent light being amber light, the first filter 141 is configured to reflect light with a wavelength of 520 nm or less and transmit light with a wavelength of 520 nm or more. In this way, the first filter 141 can filter out the light spectrum that affects the color saturation, such as filtering light with a wavelength of 520 nm or less, so that the color of the amber light emitted by the light source module 100 is more pure, which helps to improve the color saturation of the amber light and further improves the accuracy of the light emitted by the entire light source module 100.

[0054] For example, as shown in FIG. 6 and Table 1, the values of the ordinate on the left side of FIG. 6 represent the transmittance of the first filter 141, and the black solid line in FIG. 6 represents the curve of the transmittance of the first filter 141 varying with the wavelength. It can be seen that the transmittance of the first filter 141 is extremely low for light with a wavelength of 380 nm-520 nm, and the transmittance rapidly increases for light with a wavelength of 520 nm-560 nm. For light with a wavelength of 560 nm or more, the transmittance of the light reaches an extremely high level and is basically stable at more than 97%. Further, the first filter 141 of the embodiment of the present application only corrects the color of the light emitted by the single LED light unit 130 included in the light source module 100, thereby improving the accuracy of the light emitted by the single LED light unit 130. For example, the first filter 141 can be arranged in the light path of the light emitted by the single LED light unit 130 emitting amber light, thereby improving the color saturation of the amber light. Moreover, by comparing the spectral changes of the amber light before and after the first filter 141 is added, it can be directly seen that the color saturation of the amber light before the first filter 141 is added is only about 0.7, while the color saturation of the amber light after the first filter 141 is added is more than 0.99, so that the color of the amber light is more pure, which helps to improve the color saturation of the amber light and solves the interference of the blue light on the amber light. In some embodiments, there are multiple first filters 141 in the light path of the first color fluorescent light, so as to more effectively filter light with a wavelength of, for example, less than or equal to 520 nm and greater than 520 nm, or less than 520 nm and greater than or equal to 520 nm.

[0055] Table 1

[0056] In some embodiments, less than or equal to 520 nm and greater than 520 nm, or less than 520 nm and greater than or equal to 520 nm.

[0057] For example, when the first color fluorescent light is amber light, the first filter 141 is used to reflect light with a wavelength of less than or equal to 520 nm and transmit light with a wavelength of greater than 520 nm. In this way, the first filter 141 can filter out light with a wavelength of less than 520 nm, which affects the color saturation, so that the color of the amber light emitted by the light source module 100 is more pure, which helps to improve the color saturation of the amber light and further improves the accuracy of the light emitted by the entire light source module 100.

[0058] For example, as shown in FIG. 7 and Table 2, the values of the ordinate in FIG. 7 represent the transmittance of the first filter 141. The black solid line in FIG. 7 represents the curve of the transmittance of the first filter 141 varying with the wavelength, and it can be seen that the transmittance of the first filter 141 is extremely low for light with a wavelength between 380 nm and 480 nm, and the transmittance sharply increases for light with a wavelength between 480 nm and 510 nm; for light with a wavelength of 510 nm or more, the transmittance of the light reaches an extremely high level and is basically stable at more than 97%. Further, the first filter 141 of the embodiment of the present application only corrects the color of the light emitted by the single LED light unit 130 included in the light source module 100, and improves the accuracy of the light emitted by the single LED light unit 130. For example, the first filter 141 can be arranged in the light path of the single LED light unit 130 emitting greenish-yellow light, so as to improve the color saturation of the greenish-yellow light. Moreover, before the first filter 141 is added, the color saturation of the greenish-yellow light is only about 0.7, and after the first filter 141 is added, the color saturation of the greenish-yellow light reaches more than 0.99, so that the color of the greenish-yellow light is more pure, which helps to improve the color saturation of the greenish-yellow light and also solves the interference of the blue light on the greenish-yellow light. In some embodiments, there are multiple first filters 141 in the light path of the first color fluorescent light, so as to more effectively filter light with a wavelength of, for example, less than or equal to 480 nm.

[0059] Table 2

[0060] In some embodiments, less than or equal to 480 nm and greater than 480 nm, for example, can be less than 480 nm and greater than or equal to 480 nm, and for another example, can be less than 480 nm and greater than 480 nm.

[0061] Referring to FIG. 8, in some embodiments, at least one LED light unit 130 is used to emit first color fluorescent light, and at least one first filter 141 is arranged in the light path of the first color fluorescent light; at the same time, at least one LED light unit 130 is used to emit second color fluorescent light, and at least one second filter 142 is arranged in the light path of the second color fluorescent light, the second color fluorescent light being different from the first color fluorescent light. An example is that the first color fluorescent light is greenish-yellow light, and the second color fluorescent light is greenish-yellow light. Another example is that the first color fluorescent light is greenish-yellow light, and the second color fluorescent light is greenish-yellow light.

[0062] For example, in the case that the first color fluorescence is lime light and the second color fluorescence is amber light, the first filter 141 is disposed in the light path of the lime light to optimize the color saturation of the first color fluorescence, and the second filter 142 is disposed in the light path of the amber light to optimize the color saturation of the second color fluorescence. In some embodiments, when there are multiple LED light emitting units 130 emitting multiple first color fluorescence and second color fluorescence, there are multiple first filters 141 in the light path of the first color fluorescence and multiple second filters 142 in the light path of the second color fluorescence to better improve the color saturation of the light source module 100. It should be noted that the first filter 141 and the second filter 142 are only disposed in the light path of the first color fluorescence and the second color fluorescence that need to be processed, and for other LED light emitting units 130 that do not need to be processed, the light path of the light emitted by the LED light emitting units 130 does not need to be disposed with any filter 140. That is, the present application improves the purity of the light emitted by the light source module 100 by disposing the filter 140 in the light path of the light emitted by the array LED light emitting unit 130 that needs to be processed, thereby improving the color saturation of the light emitted.

[0063] In some embodiments, in the multiple LED light emitting units 130, the light path of the light emitted by the light emitting device 132 of one, two, three, four, five, six, seven or other number of LED light emitting units 130 can be disposed with a filter 140. In other embodiments, the light path of the light emitted by the light emitting device 132 of each LED light emitting unit 130 in the multiple LED light emitting units 130 can be disposed with a filter 140.

[0064] In some embodiments, the light source module 100 further comprises a condenser lens 160, which is disposed in the light path of the light emitted by the light homogenizing device 150 and used for converging the light beam. In this way, the condenser lens 160 can concentrate and guide the light rays that have been subjected to light homogenization, so that the light rays are more concentrated in the light emission direction, which helps to reduce the loss of light rays and ensures that more light rays are effectively utilized.

[0065] In some embodiments, the condenser lens 160 can be a plano-convex lens, for example, the light entrance surface of the condenser lens 160 can be a convex surface and the light exit surface of the condenser lens 160 can be a flat surface.

[0066] In summary, by disposing a filter in the light path of the first color fluorescence and / or the second color fluorescence, the color saturation of the first color fluorescence and / or the second color fluorescence is improved. The present application will be described below in conjunction with specific embodiments.

[0067] Embodiment one:

[0068] Referring to FIG. 5, in some embodiments, the filter 140 can be disposed on the light exit surface of the fluorescent device 132, which helps the filter 140 to better filter out the blue light in the wavelength range that is not needed, and ensures that most of the converted fluorescent light can pass through the filter 140. At this time, the filter 140 is an optical film disposed on the light exit surface of the fluorescent device 132, which is formed on the light exit surface of the fluorescent device 132 by a coating process. It can be understood that the filter 140 can also be formed by adhering a shaped filter 140 to the light exit surface of the fluorescent device 132.

[0069] In an embodiment, at least one first filter 141 is disposed on the light exit surface of the amber light fluorescent powder, the lime light fluorescent powder, the cyan light fluorescent powder, the red light fluorescent powder, or the green light fluorescent powder.

[0070] In an embodiment, at least one first filter 141 is disposed on the light exit surface of the amber light fluorescent powder, the lime light fluorescent powder, the cyan light fluorescent powder, the red light fluorescent powder, or the green light fluorescent powder, and at least one second filter 142 is disposed on the light exit surface of the amber light fluorescent powder, the lime light fluorescent powder, the cyan light fluorescent powder, the red light fluorescent powder, or the green light fluorescent powder. The first filter 141 and the second filter 142 have different transmission and reflection wavelengths for the spectrum.

[0071] In an embodiment, when the light source module 100 includes multiple colors of fluorescent light, the light source module 100 can also include multiple filters 140, and the multiple filters 140 are respectively disposed on the surfaces of the different color fluorescent powders.

[0072] In some embodiments, the filters 140 can be distributed apart from the light exit surface of the fluorescent device 132, which helps to reduce the thermal effect of the fluorescent device 132 on the filters 140.

[0073] It should be noted that all the above solutions regarding the filter 140 can be applied to the first embodiment, or all the above technical solutions combined with the first embodiment are within the protection scope of the present application.

[0074] Embodiment II:

[0075] Referring to FIG. 4, in some embodiments, the filter 140 can also be disposed on the lens unit 121, which helps to simplify the structure of the light source module 100, so that the light source module 100 can not need to additionally configure other structures such as a support to install the filter 140.

[0076] Referring to FIG. 9, in some embodiments, the filter 140 can be disposed on the light-incident surface of the first collimating lens 1211 of the lens unit 121, so that the lens unit 121 can collect the light optimized by the filter 140. In other embodiments, the filter 140 can be disposed on the light-incident surface of the second collimating lens 1212 of the lens unit 121.

[0077] Referring to FIG. 10, in some embodiments, the filter 140 can be disposed on the light-incident surface of the second collimating lens 1212 of the lens unit 121, so that the filter 140 is located on the side of the first collimating lens 1211 away from the fluorescent device 132, which helps to reduce the thermal influence of the fluorescent device 132 on the filter 140. In other embodiments, the filter 140 can be disposed on the light-incident surface of the second collimating lens 1212 of the lens unit 121. At this time, the filter 140 is an optical film disposed on the light-incident surface or the light-incident surface of the lens unit 121, which is formed on the light-incident surface and the light-incident surface of the lens unit 121 by a film coating process. It can be understood that the filter 140 can also be formed by adhering the shaped filter 140 to the light-incident surface and the light-incident surface of the lens unit 121.

[0078] In an embodiment, at least one first filter 141 is disposed on the light-incident surface or the light-incident surface of the first collimating lens 1211 or the second collimating lens 1212.

[0079] In an embodiment, at least one first filter 141 is disposed on the light-incident surface or the light-incident surface of the first collimating lens 1211 or the second collimating lens 1212 that collects the first color fluorescent light, and at least one second filter 142 is disposed on the light-incident surface or the light-incident surface of the first collimating lens 1212 or the second collimating lens 1212 that collects the second color fluorescent light.

[0080] In an embodiment, when the light source module 100 includes multiple colors of fluorescent light, the light source module 100 can also include multiple filters 140, and the multiple filters 140 are respectively disposed on the light-incident surface or the light-incident surface of the first collimating lens 1212 or the second collimating lens 1212 that collects different color fluorescent light.

[0081] It should be noted that all the above solutions about the filter 140 can be applied to the second embodiment, or all the above technical solutions combined with the second embodiment are within the protection scope of the present application.

[0082] Embodiment three:

[0083] Referring to FIG. 11, in some embodiments, the filter 140 is independently located between the fluorescent device 132 and the lens unit 121, where "independently" can mean, for example, that the filter 140 is spaced apart from the fluorescent device 132, the lens unit 121, etc. independently; "independently" can also mean, for example, that the fluorescent device 132, the lens unit 121, etc. do not provide a support or mounting position for the filter 140, and the filter 140 can be in contact with or not in contact with the fluorescent device 132, the lens unit 121, etc.; "independently" can also mean, for example, that the filter 140 is not integrated with the fluorescent device 132, the lens unit 121, etc.

[0084] In an embodiment, the filter 140 is an optical film formed on the light-transmitting sheet by a coating process when the filter 140 is separately provided. It can be understood that the filter 140 can also be attached to the light-transmitting sheet by molding.

[0085] In an embodiment, the separately provided filter 140 can be a plurality of small filters corresponding to the LED light emitting units 130, or can be a large filter covering the entire light source substrate 110, and the large filter is coated for the light path area of the LED light emitting unit 130 that needs to be processed, and is not coated for the light path area of the LED light emitting unit 130 that does not need to be processed.

[0086] It should be noted that all the above solutions regarding the filter 140 can be applied to the third embodiment, or all the above technical solutions combined with the third embodiment are within the protection scope of the present application.

[0087] Embodiment Four:

[0088] Referring to FIG. 12, in some embodiments, the filter 140 is independently located between the first collimating lens 1211 and the second collimating lens 1212, where "independently" can mean, for example, that the filter 140 is spaced apart from the first collimating lens 1211, the second collimating lens 1212, etc. independently; "independently" can also mean, for example, that the first collimating lens 1211, the second collimating lens 1212, etc. do not provide a support or mounting position for the filter 140, and the filter 140 can be in contact with or not in contact with the first collimating lens 1211, the second collimating lens 1212, etc.; "independently" can also mean, for example, that the filter 140 is not integrated with the first collimating lens 1211, the second collimating lens 1212, etc.

[0089] In an embodiment, the filter 140 is an optical film formed on the light-transmitting sheet by a coating process when the filter 140 is separately provided. It can be understood that the filter 140 can also be attached to the light-transmitting sheet by molding.

[0090] In an embodiment, the filter 140 can be a plurality of small filters corresponding to the LED light units 130, or a large filter covering the entire light source substrate 110, the large filter being coated for the light path area of the LED light units 130 that need to be processed, and the other LED light units 130 that do not need to be processed not being coated.

[0091] It should be noted that all the above solutions about the filter 140 can be applied to the fourth embodiment, or all the above solutions combined with the second embodiment belong to the protection scope of the present application.

[0092] Fifth Embodiment

[0093] Referring to FIG. 13, in some embodiments, the light source module 100 can further include a light-transmitting cover 170 disposed on the light source substrate 110 to allow the collection lens group 120 to receive the fluorescent light transmitted through the light-transmitting cover 170, and the light-transmitting cover 170 can provide a certain protection for the LED light units 130 on the light source substrate 110. The filter 140 can be disposed on the light-transmitting cover 170, which helps to improve the utilization of the light-transmitting cover 170, so that the light source module 100 can not need to additionally configure other structures such as a support to install the filter 140. Specifically, the filter 140 is disposed on the area of the light-transmitting cover 170 corresponding to the light path of the LED light units 130 that need to be processed, that is, the filter 140 is disposed on the area of the light-transmitting cover 170 corresponding to the fluorescent light, and for the area of the light-transmitting cover 170 corresponding to the light path of the LED light units 130 that do not need to be processed, no treatment is needed, and the light can normally transmit through.

[0094] In some embodiments, the light-transmitting cover 170 can be a light-transmitting glass.

[0095] In an embodiment, the filter 140 is an optical film disposed on the light-transmitting cover 170 and formed on the light-transmitting cover 170 by a coating process. It can be understood that the filter 140 can also be formed by adhering a shaped filter 140 to the light-transmitting cover 170.

[0096] In an embodiment, at least one first filter 141 is disposed on the light-transmitting cover 170.

[0097] In an embodiment, at least one first filter 141 is disposed on the surface of the area of the light-transmitting cover corresponding to the first color fluorescent light, and at least one second filter 142 is disposed on the surface of the area of the light-transmitting cover corresponding to the second color fluorescent light.

[0098] In an embodiment, the light source module 100 includes a plurality of filters 140, which are respectively arranged on the surface of the light-transmitting cover 170 corresponding to the regions of different color fluorescent light.

[0099] It should be noted that all the above solutions about the filter 140 can be applied to the embodiment five, or all the above technical solutions combined with the embodiment five are within the protection scope of the present application.

[0100] Embodiment six:

[0101] Referring to FIG. 14, in some embodiments, the filter 140 is independently located between the light-transmitting cover 170 and the collection lens group 120, where "independently" can mean, for example, that the filter 140 is respectively spaced apart from the light-transmitting cover 170, the collection lens group 120, etc.; "independently" can also mean, for example, that the light-transmitting cover 170, the collection lens group 120, etc. do not provide support or mounting positions for the filter 140, and the filter 140 can be in contact with or not in contact with the light-transmitting cover 170, the collection lens group 120, etc.; "independently" can also mean, for example, that the filter 140 is not integrated in the light-transmitting cover 170, the collection lens group 120, etc.

[0102] In an embodiment, the filter 140 is an optical film formed on the light-transmitting sheet by a coating process at this time. It can be understood that the filter 140 can also be formed by adhering a formed filter 140 to the light-transmitting sheet.

[0103] In an embodiment, the separately arranged filter 140 can be a plurality of small filters corresponding to the LED light emitting units 130, or can be a large filter covering the entire light source substrate 110, and the large filter is coated for the light path region of the LED light emitting unit 130 that needs to be processed, and is not coated for the light path region of the LED light emitting unit 130 that does not need to be processed.

[0104] It should be noted that all the above solutions about the filter 140 can be applied to the embodiment six, or all the above technical solutions combined with the embodiment six are within the protection scope of the present application.

[0105] Embodiment seven:

[0106] Referring to FIG. 4, in some embodiments, the light source module 100 can further include a light homogenizing device 150, which can be located in the light path of the collection lens group 120 and used for homogenizing the light beam. In this way, the light homogenizing device 150 helps to improve the uniformity of the light beam and can further homogenize the light emitted by the collection lens group 120.

[0107] In some embodiments, the light homogenizing device 150 can include a fly-eye lens or a diffusion sheet. The fly-eye lens can split and recombine the incident light beam through a plurality of tiny lens structures, each of which can independently regulate a small part of the light, thereby achieving fine homogenization of the light and making the outgoing light more uniform. The diffusion sheet can scatter the light through the microstructure inside the material, so that the light can be uniformly dispersed in multiple directions after exiting, effectively expanding the coverage of the light and reducing the central hot spot. In this way, the fly-eye lens and the diffusion sheet can help to disperse and mix the outgoing light of the collection lens group 120, making the outgoing light more uniform and consistent.

[0108] In some embodiments, when the light homogenizing device 150 includes a fly-eye lens, the light homogenizing device 150 can select a single fly-eye lens or a double fly-eye lens.

[0109] The light filter 140 can be disposed on the light homogenizing device 150, so that the light source module 100 can not need to additionally configure other structures such as a support to install the light filter 140. Specifically, the light filter 140 is disposed on the light entrance surface of the region of the light homogenizing device 150 corresponding to the light path of the outgoing light of the LED light unit 130 that needs to be processed, that is, the light filter 140 is disposed on the light entrance surface region of the light homogenizing device 150 corresponding to the fluorescence. For the region of the light homogenizing device 150 corresponding to the light path of the outgoing light of the LED light unit 130 that does not need to be processed, no processing is needed, and the light can normally pass through.

[0110] In an embodiment, the light filter 140 is an optical film disposed on the light entrance surface of the light homogenizing device 150 and formed on the light entrance surface of the light homogenizing device 150 by a coating process. It can be understood that the light filter 140 can also be formed by adhering a shaped light filter to the light entrance surface of the light homogenizing device 150.

[0111] In an embodiment, at least one first light filter 141 is disposed on the light entrance surface of the light homogenizing device 150.

[0112] In an embodiment, at least one first light filter 141 is disposed on the light entrance surface region corresponding to the first color fluorescence of the light homogenizing device 150, and at least one second light filter 142 is disposed on the light entrance surface region corresponding to the second color fluorescence of the light homogenizing device 150.

[0113] In an embodiment, when the light source module 100 emits multiple color fluorescences, the light source module 100 can also include multiple light filters 140, and the multiple light filters 140 are respectively disposed on the light entrance surface regions of the light homogenizing device 150 corresponding to different color fluorescences.

[0114] It should be noted that all the above solutions regarding the light filter 140 can be applied to the seventh embodiment, or all the above technical solutions combined with the seventh embodiment are within the protection scope of the present application.

[0115] Embodiment eight:

[0116] Referring to FIG. 15, in some embodiments, the filter 140 is independently located between the collection lens group 120 and the light homogenizing device 150, where "independently" can mean, for example, that the filter 140 is separately spaced apart from the collection lens group 120, the light homogenizing device 150, etc.; "independently" can also mean, for example, that the collection lens group 120, the light homogenizing device 150, etc. do not provide a support or mounting position for the filter 140, and the filter 140 can be in contact with or not in contact with the collection lens group 120, the light homogenizing device 150, etc.; "independently" can also mean, for example, that the filter 140 is not integrated in the collection lens group 120, the light homogenizing device 150, etc.

[0117] In an embodiment, at this time the filter 140 is a separately provided optical film formed on the light-transmitting sheet by a coating process. It can be understood that the filter 140 can also be formed by adhering a shaped filter to the light-transmitting sheet.

[0118] In an embodiment, the separately provided filter 140 can be a plurality of small filters corresponding to the LED light emitting units 130, or can be a large filter covering the entire light source substrate 110, and the large filter is coated for the light path area of the LED light emitting unit 130 that needs to be processed, and is not coated for the light path area of the LED light emitting unit 130 that does not need to be processed.

[0119] It should be noted that all the above solutions regarding the filter 140 can be applied to embodiment eight, or all the solutions produced by combining the above solutions with embodiment eight belong to the protection scope of the present application.

[0120] Embodiment nine:

[0121] The difference between embodiment nine and the above embodiments is that embodiment nine is not limited to the first filter 141 and the second filter 142 being simultaneously provided on the same optical structure, and embodiment nine is a cross combination of the above embodiments, for example, the first filter 141 can be provided on the light emitting surface of the light homogenizing device 132, and the second filter 142 can be provided on the light entering surface of the first collimating lens 1211. It can be understood that for a solution further including a third filter, the third filter can be provided on the light entering surface of the second collimating lens 1212 or the surface of the light-transmitting cover 170, etc.

[0122] That is, the filter 140 of embodiment nine is more flexible in arrangement, and can be integrated on the existing optical structure or separately provided according to the actual situation.

[0123] In an embodiment, the first filters 141 for processing the first color fluorescence, wherein the first filters 141 are not limited to be disposed on the same optical structure, for example, the first filters 141 are disposed on different optical structures respectively, and it can be understood that a part of the first filters 141 are disposed on one optical structure and the other part are disposed on other optical structures. The processing of the second filters 142 is the same as the first filters 141, which will not be described here.

[0124] Referring to FIG. 16, the embodiment of the present application provides a light source module 100, and the light source module 100 further comprises a pattern piece 201, and the pattern piece 201 is located in the light path of the condenser lens 160.

[0125] In the present application, unless otherwise explicitly specified or limited, the terms "mounting", "connecting" and the like should be understood in a broad sense. For example, it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements, or only surface contact, or surface contact connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0126] In addition, the terms "first", "second" and the like are only used to distinguish description, and cannot be understood as specific or special structure. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description 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, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0127] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not deviate from the essence of the corresponding technical solutions, and fall within the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A light source module, characterized by The light source module comprises: a light source substrate, a plurality of LED light units in an array are arranged on the light source substrate, at least one of the LED light units comprises an LED chip and a fluorescent device, the fluorescent device is used for receiving the outgoing light of the LED chip and converting it into fluorescent light; a collection lens group, the collection lens group comprises a plurality of lens units, the plurality of lens units are arranged one by one in the light path of the plurality of LED light units, and the lens units are used for collecting the outgoing light of the LED light units; at least one filter located in the light path of the fluorescent light, the filter is used for filtering at least one of the outgoing light of the plurality of LED light units, wherein the filter is used for reflecting the outgoing light of the LED chip and transmitting the fluorescent light. The filter is arranged on the light-emitting surface of the fluorescent device.

2. The light source module of claim 1, wherein The lens unit comprises a first collimating lens and a second collimating lens, the first collimating lens and the second collimating lens are arranged in the light path of the LED light unit in sequence; 3. The light source module of claim 1, wherein At least one filter is arranged on the light-incident surface or the light-emitting surface of the first collimating lens or the second collimating lens. The light source module further comprises a light-transmitting cover, the light-transmitting cover is arranged on the light source substrate; 4. The light source module of claim 1, wherein At least one filter is arranged on the surface of the region corresponding to the fluorescent light of the light-transmitting cover. The light source module further comprises a light homogenizing device, the light homogenizing device is located in the light path of the collection lens group and is used for homogenizing the light beam; 5. The light source module of claim 1, wherein At least one filter is arranged on the light-incident surface region corresponding to the fluorescent light of the light homogenizing device. The light source module further comprises a light homogenizing device, the light homogenizing device is located in the light path of the collection lens group and is used for homogenizing the light beam; the lens unit comprises a first collimating lens and a second collimating lens; 6. The light source module of claim 1, wherein The filter is located between the fluorescent device and the lens unit; or The filter is located between the first collimating lens and the second collimating lens; or The filter is located between the collection lens group and the light homogenizing device. At least one LED light unit is used for emitting first color fluorescent light, the filter comprises a first filter, and the first filter is arranged in the light path of the first color fluorescent light.

7. The light source module according to any one of claims 1 to 6, wherein The first color fluorescent light is amber light or lime light, when the first color fluorescent light is amber light, the first filter is used for reflecting light with a wavelength of 520nm or less and transmitting light with a wavelength of 520nm or more; 8. The light source module of claim 7, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. When the first color fluorescent light is lime light, the first filter is used for reflecting light with a wavelength of 480nm or less and transmitting light with a wavelength of 480nm or more. At least one LED light unit is used for emitting second color fluorescent light, the filter comprises a second filter, and the second filter is arranged in the light path of the second color fluorescent light.

9. The light source module of claim 7, wherein the light source module is configured to be mounted on a printed circuit board (PCB) of a display device. The first color fluorescent light is amber light, the first filter is used for reflecting light with a wavelength of 520nm or less and transmitting light with a wavelength of 520nm or more; 10. The light source module of claim 9, wherein, ​ The second color fluorescence is lime light, and the second filter is used for reflecting light with a wavelength of 480 nm or less and transmitting light with a wavelength of 480 nm or more.

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