Light source module, light emitting device, lighting system and display device
The light source module addresses low efficiency and color cast issues by using transflective assemblies and polarization conversion mechanisms to enhance light utilization and color uniformity in AR devices and projection devices.
Patent Information
- Application Number
- PCT/CN2025/113009
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-08-07
- Filing Date
- 2025-08-06
- Publication Date
- 2026-02-12
AI Technical Summary
Existing light engines for AR devices and projection devices suffer from low light-emitting efficiency and are prone to color cast, leading to reduced display quality.
A light source module comprising three independently arranged light sources emitting different colors, with transflective assemblies and polarization conversion mechanisms that convert and mix polarized light to improve light utilization efficiency and color uniformity, utilizing transflective films and polarization components to emit first polarized light while mixing colors coaxially.
Enhances light utilization efficiency, improves display brightness, reduces energy consumption, and avoids color cast by effectively mixing and emitting three different colors of light, thereby improving color uniformity.
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Figure CN2025113009_12022026_PF_FP_ABST
Abstract
Description
LIGHT SOURCE MODULE, LIGHT EMITTING DEVICE, LIGHTING SYSTEM AND DISPLAY DEVICECROSS REFERENCE TO RELATED APPLICATION
[0001] This disclosure claims the benefits of priority to Chinese Application Nos. 202421905519. X and 202411081142.5, filed on August 7, 2024, which are incorporated herein by reference in their entireties.TECHNICAL FIELD
[0002] The present disclosure relates to the field of polarization imaging technology, and in particular to a light source module, a light emitting device, a lighting system and a display device.BACKGROUND
[0003] With the rapid development of polarization imaging technology, AR devices, projection devices, and other display devices usually use light engines that emit light with different polarization states such as light S (also referred to as S-polarized light) or light P (also referred to as P-polarized light) , which can achieve higher imaging quality in combination with Liquid Crystal On Silicon (LCOS) chips. However, existing light engines that can emit polarized light have low light-emitting efficiency and are prone to problems such as color cast, resulting in reduced display quality.SUMMARY OF THE INVENTION
[0004] In view of this, the disclosed embodiments of the present disclosure provide a light source module, a light emitting device, a lighting system and a display device to address the problem of low light-emitting efficiency of the light engine and proneness to color cast.
[0005] Some embodiments of the present disclosure provide a light source module, including: a first light source configured to emit a first light; a second light source configured to emit a second light; a third light source configured to emit a third light, wherein the first light, the second light and the third light have different colors; a first transflective assembly obliquely opposite to the first light source, wherein the first transflective assembly includes a first polarization component and a first transflective film, the first polarization component is capable of transmitting first polarized light and reflecting second polarized light, and the first transflective film is capable of transmitting the first light and reflecting the second light and the third light; a second transflective assembly obliquely opposite to the second light source and the third light source, wherein the second transflective assembly includes a second polarization component and a second transflective film, the second polarization component is capable of transmitting the first polarized light and reflecting the second polarized light, and the second transflective film is capable of transmitting the second light and the third light and reflecting the first light; a first polarization conversion mechanism arranged on a same side of the first transflective assembly with the first light source and obliquely opposite to the first transflective assembly, wherein the first polarization conversion mechanism is capable of converting the second polarized light from the first transflective assembly into the first polarized light and reflecting it back to the first transflective assembly; a second polarization conversion mechanism arranged between the second light source and the second transflective assembly, wherein the second polarization conversion mechanism is capable of converting the second polarized light from the second transflective assembly into the first polarized light and reflecting it back to the second transflective assembly; and a third polarization conversion mechanism arranged between the third light source and the second transflective assembly, wherein the third polarization conversion mechanism is capable of converting the second polarized light from the second transflective assembly into the first polarized light and reflecting it back to the second transflective assembly.
[0006] In the above-mentioned light source module, the three light sources that can emit three different colors of light are independently arranged; the first transflective assembly and the second transflective assembly can mix the first polarized light within the light emitted by the three light sources and emit it, and can also convert the second polarized light within the light emitted by the three light sources into the first polarized light through the polarization mechanism and then mix and emit it. Therefore, the light source module described above can utilize the light components in the second polarization state while emitting the first polarized light, effectively improving the light utilization efficiency of the light source module, which is conductive to improving display brightness and reducing energy consumption; meanwhile, it can also realize the mixing and emission of three different colors of light, so that the three different colors of light can be coaxially emitted, thereby improving the color uniformity of the emitted light and effectively avoiding color cast.
[0007] Some embodiments of the present disclosure provide a light emitting device, including a base plate and a plurality of light source modules described herein, wherein the plurality of light source modules are arranged on the base plate in an array.
[0008] Some embodiments of the present disclosure provide a lighting system, including a modulation imaging module and a light source module described herein, wherein the modulation imaging module includes a beam splitting component and a reflection modulator, the beam splitting component is arranged on the light-emitting side of the light source module, and the beam splitting component is used to transmit the light emitted by the light source module to the reflection modulator, and to receive and emit the light modulated by the reflection modulator.
[0009] Some embodiments of the present disclosure provide a display device, including a base plate and a plurality of light source modules described herein, wherein the plurality of light source modules are arranged on the base plate in an array.BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a structural diagram illustrating an example light source module according to some embodiments of the present disclosure.
[0011] FIG. 2 is a structural diagram illustrating another example light source module according to some embodiments of the present disclosure.
[0012] FIG. 3 is a structural diagram illustrating another example light source module according to some embodiments of the present disclosure.
[0013] FIG. 4 is a structural diagram illustrating another example light source module adopting light transmitting plates, according to some embodiments of the present disclosure.
[0014] FIG. 5 is a structural diagram illustrating an example light emitting device according to some embodiments of the present disclosure.
[0015] FIG. 6 is a structural diagram illustrating another example light emitting device according to some embodiments of the present disclosure.
[0016] FIG. 7 is a structural diagram illustrating another example light emitting device according to some embodiments of the present disclosure.
[0017] FIG. 8 is a structural diagram illustrating another example light emitting device according to some embodiments of the present disclosure.
[0018] FIG. 9 is a structural diagram illustrating an example display device according to some embodiments of the present disclosure.
[0019] FIG. 10 is a structural diagram illustrating another example display device according to some embodiments of the present disclosure.DETAILED DESCRIPTION
[0020] In order to make the above-mentioned purposes, features and advantages of the present disclosure more readily understandable, the specific embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present disclosure. Therefore, the present disclosure is not limited by the specific embodiments disclosed below.
[0021] FIG. 1 is a structural diagram illustrating an example light source module 10 according to some embodiments of the present disclosure. As shown in FIG. 1, light source module 10 provided in the present disclosure can be used to emit light in a polarization state, for example, emit first polarized light. In some embodiments of the present disclosure, the polarization planes of the first polarized light and the second polarized light can be perpendicular to each other, and the polarization direction of one of the first polarized light and the second polarized light is perpendicular to the polarization axis of a first polarization component 141 and the plane where the normal line of the reflection surface of first polarization component 141 to the light is located, and is also perpendicular to the polarization axis of a second polarization component 151 and the plane where the normal line of the reflection surface of second polarization component 151 to the light is located. For example, one of the first polarized light and the second polarized light may be light P, and the other may be light S.
[0022] FIG. 9 is a structural diagram illustrating an example display device 50 according to some embodiments of the present disclosure. As shown in FIGs. 1 and 9, light source module 10 provided in the present disclosure can be used in any applicable display device 50 such as AR devices and projection devices. In display device 50, light source module 10 can be used in conjunction with a reflection modulator 412 such as a LCOS chip. The first polarized light provided by light source module 10 can cooperate with reflection modulator 412 to achieve reflective modulation of the light, so that reflection modulator 412 can modulate the light by adjusting the arrangement of liquid crystal molecules to form an image, thereby achieving display or projection. In some embodiments of the present disclosure, light source module 10 may be a light engine in display device 50. As can be appreciated, the application of light source module 10 is not limited to the embodiments described in the present disclosure. Light source module 10 can also be used in any other applicable scenario that requires polarized light for illumination, projection or display. The application scenarios of light source module 10 are not limited in the present disclosure.
[0023] Referring to FIG. 1, in some embodiments, light source module 10 includes a first light source 11, a second light source 12, and a third light source 13. First light source 11, second light source 12, and third light source 13 are respectively configured to emit a first light, a second light, and a third light. The colors of the first light, the second light, and the third light are different, and the first light, the second light, and the third light can be mixed to form white light, for example, so that the light emitted by light source module 10 can meet the needs of lighting, display, or projection. That is, the colors of the first light, the second light, and the third light can constitute three primary colors. For example, the first light can be one of red light, green light, and blue light, and the second light and the third light can be the other two of red light, green light, and blue light. In some embodiments of the present disclosure, the wavelength of red light can be 600 nm –700 nm, the wavelength of green light can be 500 nm –600 nm, and the wavelength of blue light can be 400 nm –500 nm.
[0024] Light source module 10 further includes a first transflective assembly 14 and a second transflective assembly 15 having an optical selective transflective function. First transflective assembly 14 is obliquely opposite to first light source 11. That is, first transflective assembly 14 is tilted towards the main light-emitting direction of first light source 11. Thus, the light emitted by first light source 11 can be projected onto first transflective assembly 14. First transflective assembly 14 includes a first polarization component 141 and a first transflective film 142. First polarization component 141 can transmit the first polarized light and reflect the second polarized light, and first transflective film 142 can transmit the first light and reflect the second light and the third light. Second transflective assembly 15 is obliquely opposite to second light source 12 and third light source 13. That is, second transflective assembly 15 is tilted towards the main light-emitting directions of second light source 12 and third light source 13. Thus, the light emitted by second light source 12 and third light source 13 can both be projected onto second transflective assembly 15. Second transflective assembly 15 includes a second polarization component 151 and a second transflective film 152. Second transflective film 152 can transmit the second light and the third light and reflect the first light. It is appreciated that first polarization component 141 and second polarization component 151 can be polarization-selective transflective components, which transmit light components in the first polarization state and reflect light components in the second polarization state, and first transflective film 142 and second transflective film 152 can be wavelength-selective transflective components, which can transmit light of corresponding color wavelengths and reflect light of other color wavelengths. It is appreciated that in some embodiments of the present disclosure, the main light-emitting direction of the light source can be perpendicular to the light-emitting surface of the light source. The main light can be the light emitted from the central area of the light-emitting surface of the light source and perpendicular to the light-emitting surface of the light source.
[0025] The cooperation between first transflective assembly 14 and second transflective assembly 15 enables the emission of the light components in the first polarization state in the first light emitted by first light source 11, the second light emitted by second light source 12, and the third light emitted by third light source 13.
[0026] FIG. 2 is a structural diagram illustrating another example light source module 10 according to some embodiments of the present disclosure. For example, as shown in FIGs. 1 and 2, in some embodiments, a side of first transflective assembly 14 opposite first light source 11 can be opposite to a side of second transflective assembly 15 opposite second light source 12. First transflective assembly 14 and second transflective assembly 15 can be perpendicular to each other. Moreover, second transflective assembly 15 may form an angle of 45° to the main light-emitting directions of second light source 12 and third light source 13, respectively. The light in the first polarization state within the light emitted by one of second light source 12 and third light source 13 can be directly emitted through second transflective assembly 15. In addition, the light in the first polarization state within the light emitted by the other one of second light source 12 and third light source 13 can be emitted through second transflective assembly 15 towards first transflective assembly 14, and then emitted after being reflected by first transflective assembly 14.
[0027] FIG. 3 is a structural diagram illustrating another example light source module 10 according to some embodiments of the present disclosure. As shown in FIGs. 1 and 3, in some embodiments, first transflective assembly 14 can form an angle of 45° to the main light-emitting directions of first light source 11. The first light in the first polarization state within the light emitted by first light source 11 can be emitted through first transflective assembly 14. In addition, the first light in the first polarization state within the light emitted by first light source 11 can be emitted through first transflective assembly 14 towards second transflective assembly 15, and then emitted after being reflected by second transflective assembly 15.
[0028] In some embodiments, light source module 10 further includes a first polarization conversion mechanism 16, a second polarization conversion mechanism 17 and a third polarization conversion mechanism 18. First polarization conversion mechanism 16 can be arranged on the same side of first transflective assembly 14 together with first light source 11, and can be obliquely opposite to first transflective assembly 14. In addition, first polarization conversion mechanism 16 can convert the second polarized light from first transflective assembly 14 into the first polarized light and reflect it back to first transflective assembly 14. As shown in FIGs. 1 and 3, first transflective assembly 14 can form an angle of 45° to both first light source 11 and first polarization conversion mechanism 16. In some embodiments, as shown in FIG. 1, the light components in the second polarization state within the light emitted by first light source 11 can be reflected by first transflective assembly 14 towards first polarization conversion mechanism 16, and then converted by first polarization conversion mechanism 16 into the first polarized light and reflected back to first transflective assembly 14, and then emitted through first transflective assembly 14. In some embodiments, as shown in FIG. 3, the light reflected back from first polarization conversion mechanism 16 can be emitted through first transflective assembly 14 towards second transflective assembly 15, and then emitted after being reflected by second transflective assembly 15.
[0029] In some embodiments, second polarization conversion mechanism 17 can be arranged between second light source 12 and second transflective assembly 15. Second polarization conversion mechanism 17 can transmit the second light emitted by second light source 12, and can convert the second polarized light from second transflective assembly 15 into the first polarized light and reflect it back to second transflective assembly 15. Third polarization conversion mechanism 18 can be arranged between third light source 13 and second transflective assembly 15. Third polarization conversion mechanism 18 can convert the second polarized light from second transflective assembly 15 into the first polarized light and reflect it back to second transflective assembly 15. As shown in FIGs. 1 and 2, second transflective assembly 15 forms an angle of 45° to the main light-emitting directions of both second light source 12 and third light source 13. In some embodiments, as shown in FIG. 1, the second light in the second polarization state within the light emitted by second light source 12 can be reflected by second transflective assembly 15 to third polarization conversion mechanism 18, and then converted by third polarization conversion mechanism 18 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15. In some embodiments, as shown in FIG. 2, the second light in the second polarization state within the light emitted by second light source 12 can be emitted through second transflective assembly 15 towards first transflective assembly 14, and then emitted after being reflected by first transflective assembly 14. The third light in the second polarization state within the light emitted by third light source 13 can be reflected by second transflective assembly 15 to second polarization conversion mechanism 17, and then converted by second polarization conversion mechanism 17 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15, or emitted through second transflective assembly 15 to first transflective assembly 14, and then emitted after being reflected by first transflective assembly 14.
[0030] According to light source module 10 described above, the three light sources (e.g., first light source 11, second light source 12 and third light source 13) that can emit three different colors of light are independently arranged, and the three light sources are arranged not to interfere with each other, which can increase the light emitting area of each light source. Furthermore, first transflective assembly 14 and second transflective assembly 15 can mix the first polarized light within the light emitted by the three light sources and emit it, and can also convert the second polarized light within the light emitted by the three light sources into the first polarized light through the polarization mechanism and then mix and emit it. Therefore, light source module 10 described above can utilize the light components in the second polarization state while emitting the first polarized light, effectively improving the light utilization efficiency of light source module 10, which is conductive to improving display brightness and reducing energy consumption; meanwhile, it can also realize the mixing and emission of three different colors of light, so that the three different colors of light can be coaxially emitted, thereby improving the color uniformity of the emitted light and effectively avoiding color cast.
[0031] FIG. 4 is a structural diagram illustrating another example light source module 10 adopting light transmitting plates, according to some embodiments of the present disclosure. According to the embodiments described in connection with FIGs. 1 to 4, it is appreciated that the first polarized light can be light P and the second polarized light can be light S as an example, then first polarization component 141 and second polarization component 151 can be both polarization-selective transflective components that can transmit light P and reflect light S. In some embodiments where first light source 11 is a red light source and the first light is red light, second light source 12 is a green light source and the second light is green light, and third light source 13 is a blue light source and the third light is blue light. In addition, first transflective film 142 can be a wavelength-selective transflective film that can transmit red light and reflect green and blue light, and second transflective film 152 can be a wavelength-selective transflective film that can transmit green and blue light and reflect red light. Both the green light source and the blue light source are obliquely opposite to second transflective assembly 15. Since the wavelengths of green light and blue light are closer, it is beneficial to reduce the difficulty of designing and preparing first transflective film 142 and second transflective film 152, and improve the transmittance and reflectivity of first transflective film 142 and second transflective film 152 to the corresponding light, thereby helping improve the light utilization efficiency of light source module 10. As can be appreciated, according to different display and projection requirements, the color type of light emitted by each light source, as well as the first polarized light and the second polarized light may be configured otherwise, and first transflective assembly 14 and second transflective assembly 15 may also be adjusted accordingly as long as the corresponding optical path can be achieved. For example, in the embodiments shown in FIG. 9, it is appreciated that the first polarized light is light S and the second polarized light is light P as an example.
[0032] In some embodiments, the main light-emitting directions of second light source 12 and third light source 13 are perpendicular to each other, the main light-emitting direction of first light source 11 and the main light-emitting direction of one of second light source 12 and third light source 13 (e.g., second light source 12) are parallel to each other, and the main light-emitting direction of first light source 11 and the main light-emitting direction of the other one of second light source 12 and third light source 13 (e.g., third light source 13) are perpendicular to each other.
[0033] It is appreciated that the layout of each component in light source module 10 can be different, and the corresponding optical path design is also different. FIGs. 1 to 3 respectively illustrate the optical path diagrams of light source module 10 under three different component layouts. As can be appreciated, the layout of the components of light source module 10 is not limited to this as long as the first polarized light within the light emitted by first light source 11, second light source 12 and third light source 13 can be emitted, and the second polarized light can be converted into the first polarized light for emission, so as to improve the light utilization efficiency, and the first light, the second light and the third light can be coaxially mixed and emitted to improve color uniformity.
[0034] Referring to FIG. 1 again, in some embodiments, first light source 11 and second light source 12 are located on respective sides of first transflective assembly 14 and second transflective assembly 15 where first transflective assembly 14 and the second transflective assembly 15 face away from each other. In some embodiments, first light source 11, first transflective assembly 14, second transflective assembly 15 and second light source 12 can be arranged in sequence in the direction from first light source 11 to second light source 12. In some embodiments, third light source 13 and first polarization conversion mechanism 16 can be arranged on the same side of the line connecting first light source 11 and second light source 12. In some embodiments, the first light emitted by first light source 11 can be emitted to first transflective assembly 14. The first light in the first polarization state (may also referred to as the first polarized light within the first light) can be emitted through first transflective assembly 14 to second transflective assembly 15, and emitted after being reflected by second transflective film 152. The first light in the second polarization state (may also referred to as the second polarized light within the first light) can be reflected by first polarization component 141 to first polarization conversion mechanism 16, then converted by first polarization conversion mechanism 16 into the first polarized light and reflected back to first transflective assembly 14, and then emitted through first transflective assembly 14. The second light emitted by second light source 12 is emitted to second transflective assembly 15. The second light in the first polarization state (may also referred to as the first polarized light within the second light) can be emitted through second transflective assembly 15 to first transflective assembly 14, and emitted after being reflected by first transflective film 142. The second light in the second polarization state (may also referred to as the second polarized light within the second light) can be reflected by second polarization component 151 to third polarization conversion mechanism 18, then converted by third polarization conversion mechanism 18 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15. The third light emitted by third light source 13 can be emitted to second transflective assembly 15. The first polarized light within the third light (may also referred to as the first polarized light within the third light) can be emitted through second transflective assembly 15. The third light in the second polarization state (may also be referred to as the second polarized light within the third light) can be reflected by second polarization component 151 to second polarization conversion mechanism 17, converted by second polarization conversion mechanism 17 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15 to first transflective assembly 14, and then emitted after being reflected by first transflective film 142.
[0035] It is appreciated that through the cooperation of the first transflective assembly 14, the second transflective assembly 15, first polarization conversion mechanism 16 and second polarization conversion mechanism 17, the first polarized light within the first light, the second light and the third light can be mixed and emitted, and the second polarized light within the first light, the second light and the third light can be converted into the first polarized light and mixed and emitted. These three kinds of light from their emitting position are mixed and emitted coaxially, which effectively improves the light utilization efficiency and color uniformity of light source module 10. It is noted that in FIGs. 1 to 4, PR1 and PR2 are both used to represent the first light in the first polarization state, SR1 is used to represent the first light in the second polarization state, PG1 and PG2 are both used to represent the second light in the first polarization state, SG1 is used to represent the second light in the second polarization state, PB1 and PB2 are both used to represent the third light in the first polarization state, and SB1 is used to represent the third light in the second polarization state. That is, PR1, PR2, PG1, PG2, PB1 and PB2 are all first polarized light, and SR1, SG1 and SB1 are all second polarized light.
[0036] Referring to FIG. 2, compared to the embodiments described in connection with FIG. 1, the positions of second light source 12 and third light source 13 are swapped. Thus, first light source 11 and third light source 13 are located on respective sides of first transflective assembly 14 and second transflective assembly 15 where first transflective assembly 14 and second transflective assembly 15 face away from each other. Second light source 12 and first polarization conversion mechanism 16 are located on a side of the line connecting first light source 11 and third light source 13. In some embodiments, the optical paths of the first light can be the same as that of the embodiments described in connection with FIG. 1. The second light emitted by second light source 12 shown in FIG. 2 can be emitted to second transflective assembly 15. The second light in the first polarization state can be emitted through second transflective assembly 15. The second light in the second polarization state can be reflected by second polarization component 151 to third polarization conversion mechanism 18, converted by third polarization conversion mechanism 18 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15 to first transflective assembly 14, and then emitted after being reflected by first transflective film 142. The third light emitted by third light source 13 shown in FIG. 2 can be emitted to second transflective assembly 15. The third light in the first polarization state can be emitted through second transflective assembly 15 to first transflective assembly 14, and emitted after being reflected by first transflective film 142. The third light in the second polarization state can be reflected by second polarization component 151 to second polarization conversion mechanism 17, then converted by second polarization conversion mechanism 17 into the first polarized light and reflected back to second transflective assembly 15, and then emitted through second transflective assembly 15.
[0037] Referring to FIG. 3, compared to the embodiments described in connection with FIG. 1, the positions of first light source 11 and first polarization conversion mechanism 16 are swapped. Thus, second light source 12 and first polarization conversion mechanism 16 are located on respective sides of first transflective assembly 14 and second transflective assembly 15 where first transflective assembly 14 and second transflective assembly 15 face away from each other. First light source 11 and third light source 13 are located on the same side of the line connecting first light source 11 and first polarization conversion mechanism 16. In some embodiments, the optical path design of the second light and the third light can be the same as that of the embodiments described in connection with FIG. 1. The first light emitted by first light source 11 shown in FIG. 3 can be emitted to first transflective assembly 14. The first light in the first polarization state can be emitted through first transflective assembly 14. The first light in the second polarization state can be reflected by first polarization component 141 to first polarization conversion mechanism 16, converted by first polarization conversion mechanism 16 into the first polarized light and reflected back to first transflective assembly 14, and then emitted through first transflective assembly 14 to second transflective assembly 15, and then emitted after being reflected by second transflective film 152.
[0038] As can be appreciated, with further reference to FIG. 3, the positions of second light source 12 and third light source 13 can also be swapped. Thus, third light source 13 and first polarization conversion mechanism 16 are located on respective sides of first transflective assembly 14 and second transflective assembly 15 where first transflective assembly 14 and second transflective assembly 15 face away from each other. The corresponding structure and optical path design are available by referring to the above-mentioned descriptions and will not be repeated here.
[0039] In some embodiments, first polarization component 141 is arranged on a side of first transflective film 142 facing first light source 11, and second polarization component 151 is arranged on a side of second transflective film 152 facing second light source 12 and third light source 13. Therefore, the second polarized light that hits the transflective assembly (e.g., first transflective assembly 14 and second transflective assembly 15) can be reflected by the polarization component (e.g., first polarization component 141 and second polarization component 151) without passing through the transflective film (e.g., first transflective film 142 and second transflective film 152) , while the first polarized light that hits the side of the transflective film facing away from the polarization component can be reflected by the transflective film without passing through the polarization component, which can reduce the number of structures that the light passes through in light source module 10, and helps reduce light loss and improve the light-emitting efficiency of light source module 10.
[0040] In some embodiments, light source module 10 may further include three collimating components 19, which are respectively arranged between first light source 11 and the first transflective assembly 14, between second light source 12 and second polarization conversion mechanism 17, and between third light source 13 and third polarization conversion mechanism 18 . Collimating component 19 may include, but not limited to, a convex lens, a lens assembly consisting of a plurality of lenses, or a Fresnel lens.
[0041] In some embodiments, first polarization conversion mechanism 16 may include a first quarter-wave plate 161 and a first reflective component 162 arranged on a side of first quarter-wave plate 161 facing away from first transflective assembly 14. First reflective component 162 may include, but not limited to, a reflecting mirror. The second polarized light from first transflective assembly 14 can be emitted through first quarter-wave plate 161 to first reflective component 162, and converted by first quarter-wave plate 161 into the first polarized light after being reflected by first reflective component 162. In some embodiments, second polarization conversion mechanism 17 may include a second quarter-wave plate 171 and a first transflective component 172 arranged between second quarter-wave plate 171 and second light source 12. First transflective component 172 can transmit the second light and reflect the third light. For example, first transflective component 172 can be a selectively transparent film layer or other optical structure that can transmit green light and reflect blue light. The second light emitted by second light source 12 can be emitted through second polarization conversion mechanism 17 to second transflective assembly 15. The third light in the second polarization state from second transflective assembly 15 can be emitted through second quarter-wave plate 171 to first transflective component 172, and emitted through second quarter-wave plate 171 again, converted into the first polarized light after being reflected by first transflective component 172 and emitted to second transflective assembly 15. Third polarization conversion mechanism 18 may include a third quarter-wave plate 181 and a second transflective component 182 arranged between third quarter-wave plate 181 and third light source 13. Second transflective component 182 can transmit the third light and reflect the light emitted by second light source 12. For example, it can be a selectively transparent film layer or other optical structure that can transmit blue light and reflect green light. The optical path design corresponding to third polarization conversion mechanism 18 is available by referring to second polarization conversion mechanism 17.
[0042] Referring to FIG. 1 again, in some embodiments, light source module 10 may include a first prism 21, a second prism 22 and a third prism 23. First prism 21, second prism 22 and third prism 23 can be all right-angle prisms, and each has two right-angle surfaces that are perpendicular and connected to each other, and an inclined surface connected to the two right-angle surfaces. The two right-angled surfaces of third prism 23 can be respectively opposite to the inclined surface of first prism 21 and the inclined surface of second prism 22. One of first polarization component 141 and first transflective film 142 can be arranged on the inclined surface of first prism 21, and the other one of first polarization component 141 and first transflective film 142 can be arranged on the right-angle surface of third prism 23 opposite to first prism 21. One of second polarization component 151 and second transflective film 152 can be arranged on the inclined surface of second prism 22, and the other one of second polarization component 151 and second transflective film 152 can be arranged on the right-angle surface of third prism 23 opposite to second prism 22. Third prism 23 can be glued to first prism 21 and second prism 22. Three glued right-angle prisms can be arranged as the bearing structure of the first transflective assembly 14 and the second transflective assembly 15 to help improve the assembly accuracy and structural reliability of the first transflective assembly 14 and the second transflective assembly 15. It is appreciated that when light source module 10 is provided with three right-angle prisms, the inclined surface of third prism 23 can be regarded as the emitting surface of light source module 10.
[0043] Referring to FIG. 4, in some embodiments, light source module 10 may also be provided with two light transmitting plates 24 as the bearing structure of first transflective assembly 14 and second transflective assembly 15. Light transmitting plates 24 can be glass plates. Two light transmitting plates 24 can be perpendicular to each other. First polarization component 141 and first transflective film 142 can be respectively arranged on opposite sides of one of light transmitting plates 24, and second polarization component 151 and second transflective film 152 can be respectively arranged on opposite sides of the other one of light transmitting plates 24. Two light transmitting plates 24 can be assembled by means of a structure such as a bracket. Light transmitting plates 24 are arranged as a bearing structure to help reduce the path of light passing through glass or plastic media, reduce light loss, and thus improve light-emitting efficiency.
[0044] Referring to FIG. 1 again, although light source module 10 provided in the present disclosure can mix the first light, the second light and the third light of different colors and emit them coaxially to improve color uniformity, the light emitted from different positions may be different in intensity due to different optical paths, which affects color uniformity. For example, in the embodiments shown in FIG. 1, among the light PR1 , PG2 and PB1 emitted from second transflective assembly 15, the optical path of PB1 can be shorter than the optical path of PG2, and the intensity of the light PB1 can be greater than the intensity of PG2, which may affect color uniformity. In addition, among the light PR2, PG1 and PB2 emitted from first transflective assembly 14, the optical path of PG1 can be shorter than the optical path of PB2, and the intensity of the light PG1 is greater than that of PB2, which may affect color uniformity.
[0045] To avoid the influence of optical path on color uniformity, in some embodiments, light source module 10 includes a first color filter 25 and a second color filter 26. First color filter 25 can be arranged on the light-emitting side of first transflective assembly 14, and second color filter 26 can be arranged on the light-emitting side of second transflective assembly 15. When light source module 10 includes three right-angle prisms, first color filter 25 can be arranged on an area of the inclined surface of third prism 23 where the light transmitted through first transflective assembly 14 may pass through, and second color filter 26 can be arranged on an area of the inclined surface of third prism 23 where the light transmit through second transflective assembly 15 may pass through. In particular, first color filter 25 can be used to reduce the light with the highest intensity among the first light, the second light and the third light emitted by first transflective assembly 14, and second color filter 26 is used to reduce the light with the highest intensity among the first light, the second light and the third light emitted by second transflective assembly 15. For example, as shown in FIG. 1, first color filter 25 can be used to reduce the brightness of the second light, that is, the transmittance of first color filter 25 to the second light is less than the transmittance to the third light, so as to reduce the intensity difference between the second light and the third light. Second color filter 26 can be used to reduce the intensity of the third light. That is, the transmittance of second color filter 26 to the third light is less than the transmittance to the second light, so as to reduce the intensity difference between the second light and the third light. Therefore, first color filter 25 and second color filter 26 can improve the intensity uniformity of light of different colors in the light emitted from the corresponding position, thereby improving the color uniformity of the light emitted by light source module 10 and improving the display or projection quality. In the embodiments described in connection with FIGs. 2 and 3, first color filter 25 and second color filter 26 may also be provided therein. The difference in transmittance of first color filter 25 and second color filter 26 to light of different colors may be adapted according to the optical path of light of different colors, which will not be described repeatedly here.
[0046] FIG. 5 is a structural diagram illustrating an example light emitting device 30 according to some embodiments of the present disclosure. As shown in FIG. 5, some embodiments of the present disclosure provide light emitting device 30 including a plurality of light source modules 10 described above. Light emitting device 30 may further include a carrier 31. The plurality of light source modules 10 can be arranged in an array on the carrier 31. In some embodiments, light emitting device 30 shown in FIG. 5 can adopt light source module 10 in the embodiments described in connection with FIG. 3, wherein third light source 13 and first light source 11 are respectively indicated by dashed lines in FIG. 5. As can be appreciated, light source module 10 in light emitting device 30 may also adopt light source module 10 described in any other of the above-mentioned embodiments. The plurality of light source modules 10 arranged in an array are provided in light emitting device 30. In addition, the plurality of light source modules 10 can emit light simultaneously, thereby effectively improving display brightness and meeting high-power display requirements. Meanwhile, different light source modules 10 can emit light separately, or the light-emitting power of first light source 11, the second light source 12 and third light source 13 in different light source modules 10 can be different, which can achieve local display, or different display brightness at different positions, or different intensities of light of different colors and other effects to meet a variety of different dimming requirements.
[0047] In some embodiments, by taking first transflective assembly 14 as an array unit and second transflective assembly 15 as an array unit, first transflective assembly 14 and second transflective assembly 15 can be arranged in a 2*2 array, and thus light emitting device 30 may include two light source modules 10 arranged in an array as shown in FIG. 5. FIG. 6 is a structural diagram illustrating another example light emitting device 30 according to some embodiments of the present disclosure. As shown in FIG. 6, first transflective assembly 14 and second transflective assembly 15 can also be arranged in a 4*4 array, and thus light emitting device 30 may include eight light source modules 10 arranged in an array. As can be appreciated, first transflective assembly 14 and second transflective assembly 15 can also be arranged in an array of 8*8 or other forms, and the number of light source modules 10 can also be configured otherwise, which can be specifically designed according to display or projection requirements.
[0048] In some embodiments, in an array formed by the plurality of light source modules 10, any first transflective assembly 14 of light source modules 10 can be adjacent to first transflective assembly 14 or second transflective assembly 15 of other light source modules 10 in a first direction and a second direction, respectively. That is, the directions in which first transflective assembly 14 points to second transflective assembly 15, of adjacent light source modules 10, are parallel to each other In other words, the arrangement directions of the plurality of light source modules 10 can be regarded as the same. The first direction and the second direction may be two directions perpendicular to each other on a plane. For example, the first direction and the second direction may be the transverse direction and the longitudinal direction of the arrangement array of the light source modules 10, respectively.
[0049] FIGs. 7 and 8 are structural diagrams each illustrating an example light emitting device 30 according to some embodiments of the present disclosure. As shown in FIGs. 7 and 8, in some embodiments, any first transflective assembly 14 is adjacent to second transflective assembly 15 of other light source modules 10 in the first direction and the second direction. That is, the arrangement directions of two adjacent light source modules 10 are opposite. In other words, the direction in which first transflective assembly 14 of one of the light source modules 10 points to the direction of second transflective assembly 15 is parallel and opposite to the direction in which first transflective assembly 14 of the adjacent light source module 10 points to second transflective assembly 15. With such arrangement, when there is a deviation in the color uniformity of the mixed light emitted by first transflective assembly 14 and second transflective assembly 15 in light source module 10, the mixing of the light emitted by two adjacent light source modules 10 can make up for the difference in color uniformity, thereby effectively improving the color uniformity and display quality of the overall light emitted by light emitting device 30.
[0050] With further reference to FIG. 9, some embodiments of the present disclosure also provide a lighting system 40 that is included in display device 50. Lighting system 40 may include a modulation imaging module 41 and a light source module 10 as described in any of the above-mentioned embodiments. As shown in FIG. 9, modulation imaging module 41 may include a beam splitting component 411 and a reflection modulator 412. Beam splitting component 411 can be arranged on the light-emitting side of light source module 10. In addition, beam splitting component 411 can be used to transmit the light emitted by light source module 10 to reflection modulator 412, so that reflection modulator 412 can modulate the light to form an image. Moreover, beam splitting component 411 is also used to transmit the light modulated by reflection modulator 412 and emit it. It is appreciated that in lighting system 40, a single light source module 10 can be used as the light source, or an array including a plurality of light source modules 10 can also be used as the light source. That is, lighting system 40 can use light source module 10 described in any of the above-mentioned embodiments. In some embodiments, lighting system 40 can also use light emitting device 30 including an array formed by the plurality of light source modules 10 in any of the above-mentioned embodiments. The use of light emitting device 30 enables lighting system 40 to have more abundant dimming functions, thereby meeting different display and projection requirements.
[0051] In some embodiments, as shown in FIG. 9, lighting system 40 may further include a homogenizing component 42, which can be arranged between light source module 10 and beam splitting component 411. Homogenizing component 42 may include, but not limited to, a fly-eye lens, a microlens array, or a Fresnel lens. Homogenizing component 42 can diffuse and homogenize the light emitted by light source module 10 to improve the uniformity of the light. For example, it can convert Gaussian distributed light into light with a more uniform distribution to achieve Kohler illumination, so as to improve the light quality of lighting system 40. In some embodiments, lighting system 40 may further include a relay lens assembly 43, which is arranged between homogenizing component 42 and beam splitting component 411. For example, relay lens assembly 43 can be arranged on a side of beam splitting component 411 facing light source module 10. Relay lens assembly 43 may include one or more lenses with focal power, and may be specifically designed according to light adjustment requirements. Relay lens assembly 43 can adjust the light, improve the incident angle of the light on beam splitting component 411, and thus improve the light-emitting efficiency.
[0052] The light reflected and modulated by reflection modulator 412 can be directly transmitted through beam splitting component 411 and then emitted for display or projection, or can be converted or shaped through other optical mechanisms. For example, some embodiments of the present disclosure also provide a display device 50 including an imaging lens assembly 51 and lighting system 40 as described in any of the above-mentioned embodiments. Imaging lens assembly 51 can be arranged on the light-emitting side of beam splitting component 411 and is used to shape the light emitted by beam splitting component 411 before emitting it. Imaging lens assembly 51 may include one or more lenses with focal power. The light modulated by reflection modulator 412 can be transmitted through beam splitting component 411 and then emitted through imaging lens assembly 51. The shaping effect of imaging lens assembly 51 can improve the display or projection quality of the light. Besides, the specific setting of imaging lens assembly 51 can be designed according to the display or projection quality requirements.
[0053] Furthermore, in some embodiments, beam splitting component 411 has a beam splitting surface 4111 as shown in FIGs. 9 and 10, and beam splitting surface 4111 can reflect the first polarized light and transmit the second polarized light. For example, beam splitting component 411 may include two glued right-angle prisms, the inclined surfaces of the two right-angle prisms are opposite and glued together. Beam splitting component 411 may further include a polarization component arranged between the two right-angle prisms, the polarization component can reflect the first polarized light and transmit the second polarized light. Beam splitting surface 4111 can be defined by the polarization component. In some embodiments, beam splitting component 411 may further include a light transmitting component (e.g., a glass plate, or a plastic plate) and a polarization component arranged on the light transmitting component, and beam splitting surface 4111 can also be defined by the polarization component. Display device 50 further includes a polarization conversion assembly 52. Polarization conversion assembly 52 can convert the second polarized light from beam splitting surface 4111 into the first polarized light and reflect it back to beam splitting surface 4111. In addition, polarization conversion assembly 52 and reflection modulator 412 can be respectively arranged on two opposite sides of beam splitting component 411, while imaging lens assembly 51 can be arranged on a side of beam splitting component 411 facing away from light source module 10. One side of beam splitting surface 4111 can be obliquely opposite to light source module 10 and reflection modulator 412, and the other side can be obliquely opposite to polarization conversion assembly 52 and imaging lens assembly 51.
[0054] In some embodiments, light source module 10 can be coaxially arranged with imaging lens assembly 51, and beam splitting surface 4111 can form an angle of 45° to the main light-emitting direction of light source module 10, the extending direction of reflection modulator 412, the extending direction of polarization conversion assembly 52, and the axis of imaging lens assembly 51. It is appreciated that in some embodiments, the first polarized light (light S1) emitted from light source module 10 passes through homogenizing component 42 and relay lens assembly 43 in sequence, then enters beam splitting component 411 and beam splitting surface 4111, and is reflected by beam splitting surface 4111 to reflection modulator 412, and then is modulated by reflection modulator 412 and converted into the second polarized light (light P1) and reflected back to beam splitting surface 4111. The light P1 passes through beam splitting surface 4111 and enters polarization conversion assembly 52, and is converted by polarization conversion assembly 52 into the first polarized light (light S2) and reflected back to beam splitting surface 4111, and is further reflected by beam splitting surface 4111 to imaging lens assembly 51, and is emitted after being adjusted by imaging lens assembly 51. Thus, through the cooperation of the beam splitting component, reflection modulator 412 and polarization conversion assembly 52, after the light emitted by light source module 10 is reflected and modulated by reflection modulator 412, the main light exiting direction of the imaging lens assembly 51 can be still the same as that of light source module 10, which helps compress the size of light source module 10 in the axial direction perpendicular to imaging lens assembly 51 to adapt to different structural layouts.
[0055] The setting of polarization conversion assembly 52 can be the same as the setting of the above-mentioned first polarization conversion mechanism 16. As shown in FIGs. 9 and 10, polarization conversion assembly 52 may include a fourth quarter-wave plate 521 and a second reflective component 522 arranged on fourth quarter-wave plate 521 facing away from beam splitting component 411. The structure of polarization conversion assembly 52 can be varied, as long as it can reflect and convert the second polarized light into the first polarized light.
[0056] In the embodiments described in connection with FIG. 9, the first polarized light can be light S, and the second polarized light can be light P. In some embodiments, the first polarized light may also be light P, and the second polarized light may be light S. FIG. 10 is a structural diagram illustrating another example display device 50 according to some embodiments of the present disclosure. As shown in FIG. 10, in some embodiments, when first polarization component 141, second polarization component 151 and beam splitting surface 4111 have a higher transmittance to light P and a higher reflectivity to light S. If the first polarized light is light P and the second polarized light is light S, lighting system 40 may further include a half-wave plate 44 arranged between beam splitting component 411 and light source module 10, and half-wave plate 44 may be arranged between homogenizing component 42 and light source module 10. Half-wave plate 44 is used to convert the first polarized light emitted by light source module 10 into the second polarized light, for example, converting light P into light S, and can adapt to the design of the transmittance and reflectivity of first polarization component 141, second polarization component 151 and beam splitting surface 4111 to the light, thereby improving the light utilization efficiency.
[0057] As can be appreciated, since the polarization planes of light P and light S are perpendicular to each other, when light source module 10 is rotated through 90° around the light-emitting direction of light source module 10 relative to beam splitting component 411, the first polarized light emitted by light source module 10 can be switched between light P and light S, thereby changing the polarization state of the emitted first polarized light. For example, by rotating light source module 10 through 90° relative to beam splitting component 411 to switch the first polarized light from light P to light S, it can not only adapt to the design of the transmittance and reflectivity of first polarization component 141, second polarization component 151 and beam splitting surface 4111 to the light, thereby improving the light utilization efficiency, but also save the setting cost of half-wave plate 44, which is conducive to the miniaturization design of display device 50.
[0058] In the embodiments shown in FIG. 10, the setting of polarization conversion assembly 52 can be the same as the embodiments shown in FIG. 9. Beam splitting surface 4111 can reflect the second polarized light and transmit the first polarized light. Polarization conversion assembly 52 can convert the first polarized light from beam splitting surface 4111 into the second polarized light and reflect it back to beam splitting surface 4111. It is appreciated that in the embodiments shown in FIG. 10, the first polarized light (light P2) emitted from light source module 10 is converted into the second polarized light (light S3) when passing through half-wave plate 44, and then passes through homogenizing component 42 and relay lens assembly 43 in sequence and then enters beam splitting surface 4111, and is reflected by beam splitting surface 4111 to reflection modulator 412, and then is modulated by reflection modulator 412 into the first polarized light (light P3) and reflected back to beam splitting surface 4111. Light P3 passes through beam splitting surface 4111 and enters polarization conversion assembly 52, and is converted by polarization conversion assembly 52 into the second polarized light (light S4) and reflected back to beam splitting surface 4111, and is further reflected by beam splitting surface 4111 to imaging lens assembly 51, and is emitted after being adjusted by imaging lens assembly 51. Such a configuration can help improve the adaptability of first polarization component 141, second polarization component 151 and beam splitting surface 4111 to transmitted and reflected light, and improve the transmittance and reflectivity of first polarization component 141, second polarization component 151 and beam splitting surface 4111 to the corresponding light, thereby helping improve the light utilization efficiency of the display device 50.
[0059] As can be appreciated, the above-mentioned embodiments are only some examples of the first polarized light and the second polarized light. Based on the structural design shown in any embodiments of FIG. 9 or FIG. 10, the first polarized light includes but is not limited to any one of light P and light S, and the second polarized light can be the other of light P and light S. When the types of the first polarized light and the second polarized light change, the corresponding optical path can still be available from the above-mentioned descriptions.
[0060] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description concise, not all possible combinations of various technical features in the above-mentioned embodiments are described herein; however, as long as there is no contradiction in the combination of these technical features, all possible combinations thereof should be considered within the scope of the present description.
[0061] In the description of the present disclosure, it should be understood that if there are such terms as “center” , “longitudinal” , “lateral” , “length” , “width” , “thickness” , “upper” , “lower” , “front” , “back” , “left” , “right” , “vertical” , “horizontal” , “top” , “bottom” , “inner” , “outer” , “clockwise” , “counterclockwise” , “axial” , “radial” , and “circumferential” , the orientations or position relations indicated by such terms are based on the orientations or position relations shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the indicated devices or components must have a particular orientation, be constructed and operated in a particular orientation, so the same cannot be construed as limitations of the present disclosure.
[0062] In addition, if the terms “first” or “second” appear, these terms are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature limited with “first” or “second” may expressly or implicitly include at least one of the features. In the description of the present disclosure, if the term “plurality” appears, “plurality” means at least two, e.g. two, three, etc., unless otherwise expressly and specifically limited.
[0063] In this application, unless otherwise expressly specified or limited, if the terms “installation” , “interconnection” , “connection” , “fixation” etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection, or an integrated connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or indirect connection through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly limited.
[0064] In the present disclosure, unless otherwise expressly specified and limited, if there is a description that the first feature is “above” or “under” the second feature, etc., or a similar description, it may indicate that the first feature is in direct contact with the second feature, or the first feature is in direct contact with the second feature through an intermediate medium. Furthermore, in the event that the first feature is “on” , “above” or “over” the second feature, it may indicate that the first feature is directly above or obliquely above the second feature, or it simply indicates that the level of the first feature is higher than that of the second feature. In the event that the first feature is “below” , “underneath” or “under” the second feature, it may indicate that the first feature is directly below or obliquely below the second feature, or it simply indicates that the level of the first feature is lower than that of the second feature.
[0065] It should be noted that if a component is described as being “fixed to” or “arranged on” another component, it can be directly on the other component or there may be a component between them. If a component is described as being “connected” to another component, it can be directly connected to the other component or there may be a component between them. The terms “vertical” , “horizontal” , “upper” , “lower” , “left” , “right” and similar expressions used herein, if any, are for the purpose of illustration only and do not represent the only embodiment.
[0066] As used herein, unless specifically stated otherwise, the term “or” encompasses all possible combinations, except where infeasible. For example, if it is stated that a component may include A or B, then, unless specifically stated otherwise or infeasible, the component may include A, or B, or A and B. As a second example, if it is stated that a component may include A, B, or C, then, unless specifically stated otherwise or infeasible, the component may include A, or B, or C, or A and B, or A and C, or B and C, or A and B and C.
[0067] The above-mentioned embodiments only express several ways of implementing the present disclosure, and the descriptions are relatively specific and detailed, but they should not be interpreted as limiting the scope of the present disclosure. It should be pointed out that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the appended claims.
Claims
1.A light source module, comprising:a first light source configured to emit a first light;a second light source configured to emit a second light;a third light source configured to emit a third light, wherein the first light, the second light and the third light have different colors;a first transflective assembly obliquely opposite to the first light source and comprises a first polarization component and a first transflective film, the first polarization component is capable of transmitting first polarized light and reflecting second polarized light, and the first transflective film is capable of transmitting the first light and reflecting the second light and the third light;a second transflective assembly obliquely opposite to the second light source and the third light source and comprises a second polarization component and a second transflective film, the second polarization component is capable of transmitting the first polarized light and reflecting the second polarized light, and the second transflective film is capable of transmitting the second light and the third light and reflecting the first light;a first polarization conversion mechanism arranged on a same side of the first transflective assembly with the first light source and obliquely opposite to the first transflective assembly, wherein the first polarization conversion mechanism is capable of converting the second polarized light from the first transflective assembly into the first polarized light and reflecting it back to the first transflective assembly;a second polarization conversion mechanism arranged between the second light source and the second transflective assembly, wherein the second polarization conversion mechanism is capable of converting the second polarized light from the second transflective assembly into the first polarized light and reflecting it back to the second transflective assembly; anda third polarization conversion mechanism arranged between the third light source and the second transflective assembly and is capable of converting the second polarized light from the second transflective assembly into the first polarized light and reflecting it back to the second transflective assembly.2.The light source module according to claim 1,wherein:the first light source and the second light source are located on respective sides of the first transflective assembly and the second transflective assembly where the first transflective assembly and the second transflective assembly face away from each other, andthe first light source, the first transflective assembly, the second transflective assembly, and the second light source are arranged in sequence in a direction from the first light source to the second light source; orwherein:the first light source and the third light source are located on respective sides of the first transflective assembly and the second transflective assembly where the first transflective assembly and the second transflective assembly face away from each other, andthe first light source, the first transflective assembly, the second transflective assembly, and the third light source are arranged in sequence in a direction from the first light source to the third light source.3.The light source module according to claim 1, wherein the second light source and the first polarization conversion mechanism are located on respective sides of the first transflective assembly and the second transflective assembly where the first transflective assembly and the second transflective assembly face away from each other; orwherein the third light source and the second polarization conversion mechanism are located on respective sides of the first transflective assembly and the second transflective assembly where the first transflective assembly and the second transflective assembly face away from each other.4.The light source module according to claim 1, wherein the first transflective assembly and the second transflective assembly are perpendicular to each other, the first transflective assembly forms an angle of 45° to a main light-emitting direction of the first light source, and the second transflective assembly forms an angle of 45° to the main light-emitting directions of the second light source and the third light source; orwherein the main light-emitting directions of the second light source and the third light source are perpendicular to each other, the main light-emitting direction of the first light source and the main light-emitting direction of one of the second light source and the third light source are parallel to each other, and the main light-emitting direction of the first light source and the main light-emitting direction of the other one of the second light source and the third light source are perpendicular to each other.5.The light source module according to claim 1, wherein the light source module comprises a first prism, a second prism, and a third prism, all of which are right angle prisms;wherein two right-angled surfaces of the third prism are respectively opposite to an inclined surface of the first prism and the inclined surface of the second prism;wherein one of the first polarization component and the first transflective film is arranged on the inclined surface of the first prism, and the other one of the first polarization component and the first transflective film is arranged on the right-angled surface of the third prism; andwherein one of the second polarization component and the second transflective film is arranged on the inclined surface of the second prism, and the other one of the second polarization component and the second transflective film is arranged on the right-angled surface of the third prism.6.The light source module according to claim 1, wherein the light source module further comprises two light transmitting plates, the first polarization component and the first transflective film are respectively arranged on two opposite sides of one of the light transmitting plates, and the second polarization component and the second transflective film are respectively arranged on the two opposite sides of the other light transmitting plate.7.The light source module according to claim 1, wherein the first polarization component is arranged on a side of the first transflective film facing the first light source, and the second polarization component is arranged on a side of the second transflective film facing the second light source and the third light source.8.The light source module according to claim 1, wherein the first polarization conversion mechanism comprises a first quarter-wave plate and a first reflective component arranged on the first quarter-wave plate and facing away from the first transflective assembly.9.The light source module according to claim 1, wherein the second polarization conversion mechanism comprises a second quarter-wave plate and a first transflective component arranged between the second quarter-wave plate and the second light source, and the first transflective component is capable of transmitting the second light and reflecting the third light; orwherein the third polarization conversion mechanism comprises a third quarter-wave plate and a second transflective component arranged between the third quarter-wave plate and the third light source, and the second transflective component is capable of transmitting the third light and reflecting the second light.10.The light source module according to claim 1, wherein the first light is red light, the second light is green light, and the third light is blue light; orwherein polarization planes of the first polarized light and the second polarized light are perpendicular to each other.11.The light source module according to claim 1, wherein the light source module comprises a first color filter and a second color filter, the first color filter is arranged on a light-emitting side of the first transflective assembly, and the second color filter is arranged on the light-emitting side of the second transflective assembly; andwherein the first color filter is configured to reduce the light with the highest intensity among the first light, the second light and the third light emitted by the first transflective assembly, and the second color filter is configured to reduce the light with the highest intensity among the first light, the second light and the third light emitted by the second transflective assembly.12.A light emitting device, comprising:a carrier; anda plurality of light source modules according to any one of claims 1 to 11, wherein the plurality of light source modules are arranged in an array on the carrier.13.The light emitting device according to claim 12, wherein in the array formed by the plurality of light source modules:any of the first transflective assemblies is adjacent to the first transflective assembly and the second transflective assembly of the other light source modules in a first direction and a second direction respectively, orany of the first transflective assemblies is adjacent to the second transflective assembly of the other light source modules in the first direction and the second direction, andwherein the first direction and the second direction are perpendicular to each other.14.A lighting system, comprising:a modulation imaging module; anda light source module according to any one of claims 1 to 11,wherein the modulation imaging module comprises a beam splitting component and a reflection modulator, the beam splitting component is arranged on the light-emitting side of the light source module, and the beam splitting component is configured to transmit the light emitted by the light source module to the reflection modulator, and to receive and emit the light modulated by the reflection modulator.15.The lighting system according to claim 14, wherein polarization planes of the first polarized light and the second polarized light are perpendicular to each other, the first polarized light is any one of light P and light S, andwherein the light source module is capable of being rotated through 90° relative to the beam splitting component around a light-emitting direction of the light source module, the first polarized light switching between light P and light S.16.A display device, comprising:an imaging lens assembly; anda lighting system according to claim 14 or 15, wherein the imaging lens assembly is arranged on the light-emitting side of the beam splitting component and is configured to shape the light emitted by the beam splitting component before emitting it.17.The display device according to claim 16, wherein a beam splitting surface of the beam splitting component is capable of reflecting the first polarized light and transmit the second polarized light,wherein the display device further comprises a polarization conversion assembly, the polarization conversion assembly is capable of converting second polarized light from the beam splitting surface into first polarized light and reflecting it back to the beam splitting surface, andwherein the polarization conversion assembly is arranged on the side of the beam splitting component facing away from the reflection modulator, and the imaging lens assembly is arranged on the side of the beam splitting component facing away from the light source module,wherein one side of the beam splitting surface is obliquely opposite to the light source module and the reflection modulator, and the other side of the beam splitting surface is obliquely opposite to the polarization conversion assembly and the imaging lens assembly.18.The display device according to claim 16, wherein the lighting system further comprises a half-wave plate arranged between the beam splitting component and the light source module, the half-wave plate being configured to convert the first polarized light emitted by the light source module into second polarized light,wherein the beam splitting surface of the beam splitting component is capable of reflecting the second polarized light and transmit the first polarized light; andwherein the display device further comprises a polarization conversion assembly, the polarization conversion assembly is capable of converting the first polarized light from the beam splitting surface into second polarized light and reflect it back to the beam splitting surface, the polarization conversion assembly is arranged on the side of the beam splitting component facing away from the light source module, one side of the beam splitting surface is obliquely opposite to the light source module and the reflection modulator, and the other side is obliquely opposite to the polarization conversion assembly and the imaging lens assembly.
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