Optical processing turntable, wavelength conversion module and projection device

Abstract

An optical processing turntable, a wavelength conversion module and a projection device. The optical processing turntable comprises a substrate and a driving assembly. The substrate has a holding hole and a first side and a second side opposite to each other. The driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate. The driving assembly has two locking surfaces, wherein the two locking surfaces are respectively located on the first side and the second side of the substrate. The projection device using the optical processing turntable of the present application can effectively reduce the noise generated by structural vibration and prolong the service life.

Description

[0001] This application is a divisional application of the patent application No. 202010606463.8 with the title of "Optical processing turntable, wavelength conversion module and projection device" and filed on June 29, 2020. TECHNICAL FIELD

[0002] The present application relates to a turntable, an optical module and a projection device, and in particular, to an optical processing turntable, a wavelength conversion module, a projector having the optical processing turntable and a projector having the wavelength conversion module. BACKGROUND

[0003] The common wavelength conversion module, such as a fluorescent wheel, is fixed in a light machine by a locking surface which is located on one side of the stator of the driver. Since the locking surface is not designed at the center of the fluorescent wheel, vibration and noise are generated during the operation of the fluorescent wheel due to the unbalanced structure. In addition, the fluorescent layer of the fluorescent wheel is arranged on the other side relative to the locking surface, so that the locking surface of the fluorescent wheel bears a force arm of a considerable distance, thereby affecting the service life of the driver and the fluorescent wheel. Furthermore, in another common fluorescent wheel, a metal ring for balance correction is arranged on one side of the fluorescent wheel, and the fluorescent layer is also located on this side. Such design also causes the structure of the fluorescent wheel to be unbalanced, thereby causing vibration and noise during the operation of the fluorescent wheel, and thereby affecting the service life of the driver and the fluorescent wheel. Therefore, how to solve the above problems of vibration and noise of the fluorescent wheel and prolong the service life is one of the focuses of the researchers in the field.

[0004] The background section is merely provided to assist understanding of the present application, therefore, the content disclosed in the background section can include some known technology to those skilled in the art. The content disclosed in the background section does not represent the known technology to those skilled in the art before the present application is filed, and the problems to be solved by the present application and one or more embodiments of the present application are not known or recognized by those skilled in the art. SUMMARY

[0005] The present application provides an optical processing turntable, wherein the locking surfaces of the driving assembly are respectively located on the opposite sides of the substrate, so as to adjust the mass center of the optical processing turntable, thereby improving the dynamic balance effect.

[0006] The present application also provides a wavelength conversion module, wherein the two adjusting rings are respectively located on the opposite sides of the substrate, so as to adjust the mass center of the wavelength conversion module, thereby improving the dynamic balance effect.

[0007] The present application further provides a projection device, which comprises the optical processing turntable described above, so as to effectively reduce the noise generated by the structural vibration.

[0008] The present application also provides a projection device, which comprises the wavelength conversion module, and can effectively reduce the noise caused by structural vibration.

[0009] Other objects and advantages of the present application can be further understood from the technical features disclosed.

[0010] To achieve any one or part or all of the above objects or other objects, an embodiment of the present application provides an optical processing turntable, which comprises a substrate and a driving assembly. The substrate has a holding hole and first and second sides opposite to each other. The driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate. The driving assembly has two locking surfaces, and the two locking surfaces are respectively located on the first and second sides of the substrate.

[0011] To achieve any one or part or all of the above objects or other objects, an embodiment of the present application provides a wavelength conversion module, which comprises a substrate, a first wavelength conversion layer, a second wavelength conversion layer, a first adjusting ring, a second adjusting ring and a driving assembly. The substrate has a holding hole and first and second sides opposite to each other. The first wavelength conversion layer is arranged on the first side of the substrate. The second wavelength conversion layer is arranged on the second side of the substrate. The first adjusting ring is arranged on the first side of the substrate. The second adjusting ring is arranged on the second side of the substrate. The driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate. The driving assembly has a locking surface, and the locking surface is located on the second side of the substrate.

[0012] To achieve any one or part or all of the above objects or other objects, an embodiment of the present application provides a projection device, which comprises a light source module, an optical processing turntable, a light valve and a projection lens. The light source module is used for emitting a light beam. The optical processing turntable is arranged on a transmission path of the light beam. The optical processing turntable comprises a substrate and a driving assembly. The substrate has a holding hole and first and second sides opposite to each other. The driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate. The driving assembly has two locking surfaces, and the two locking surfaces are respectively located on the first and second sides of the substrate. The light valve is arranged on the transmission path of the light beam to convert the light beam into an image light beam. The projection lens is arranged on a transmission path of the image light beam to convert the image light beam into a projection light beam.

[0013] To achieve any one or some or all of the above-mentioned objects or other objects, an embodiment of the present application provides a projection device. The projection device includes a light source module, a wavelength conversion module, a light valve, and a projection lens. The light source module is configured to emit a light beam. The wavelength conversion module is disposed on a transmission path of the light beam. The wavelength conversion module includes a substrate, a first wavelength conversion layer, a second wavelength conversion layer, a first adjusting ring, a second adjusting ring, and a driving assembly. The substrate has a holding hole and first and second sides opposite to each other. The first wavelength conversion layer is disposed on the first side of the substrate. The second wavelength conversion layer is disposed on the second side of the substrate. The first adjusting ring is disposed on the first side of the substrate. The second adjusting ring is disposed on the second side of the substrate. The driving assembly is disposed on the substrate through the holding hole to drive the substrate to rotate. The driving assembly has locking surfaces, and the locking surfaces are located on the second side of the substrate. The light valve is disposed on the transmission path of the light beam to convert the light beam into an image light beam. The projection lens is disposed on the transmission path of the image light beam to convert the image light beam into a projection light beam.

[0014] Based on the above, embodiments of the present application have at least one of the following advantages or effects. In the optical processing turntable of the present application, the two locking surfaces of the driving assembly are respectively located on the first and second sides of the substrate opposite to each other, so that the mass center of the optical processing turntable falls between the two locking surfaces, thereby achieving the effects of structural balance and dynamic balance. Therefore, when the optical processing turntable is in operation, the vibration and noise can be effectively reduced due to the dynamic balance, thereby prolonging the service life of the driving assembly. In this way, the projection device using the optical processing turntable of the present application can effectively reduce the noise generated by structural vibration and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic view of a projection device according to an embodiment of the present application.

[0016] Figure 2A FIG. 2 is a side view of an optical processing turntable according to the projection device of FIG. 1. Figure 1

[0017] Figure 2B FIG. 3 is a perspective view of the optical processing turntable of FIG. 2 from one viewing angle. Figure 2A

[0018] Figure 2C FIG. 4 is a perspective view of the optical processing turntable of FIG. 2 from another viewing angle. Figure 2A

[0019] Figure 2D FIG. 5 is a cross-sectional view of the optical processing turntable of FIG. 2. Figure 2A

[0020] Figure 3A FIG. 6 is a side view of an optical processing turntable according to another embodiment of the present application. ​​​​

[0021] Figure 3B for Figure 3A A three-dimensional schematic diagram of the optical processing turntable from one perspective.

[0022] Figure 3C for Figure 3A A three-dimensional schematic diagram of the optical processing turntable from another perspective.

[0023] Figure 3D for Figure 3A A cross-sectional schematic diagram of the optical processing turntable.

[0024] Figure 4A This is a side view schematic diagram of an optical processing turntable according to another embodiment of the present invention.

[0025] Figure 4B for Figure 4A A three-dimensional schematic diagram of the optical processing turntable from one perspective.

[0026] Figure 4C for Figure 4A A three-dimensional schematic diagram of the optical processing turntable from another perspective.

[0027] Figure 4D for Figure 4A A cross-sectional schematic diagram of the optical processing turntable.

[0028] Figure 5A This is a side view schematic diagram of an optical processing turntable according to another embodiment of the present invention.

[0029] Figure 5B for Figure 5A A three-dimensional schematic diagram of the optical processing turntable from one perspective.

[0030] Figure 5C for Figure 5A A three-dimensional schematic diagram of the optical processing turntable from another perspective.

[0031] Figure 5D for Figure 5A A cross-sectional schematic diagram of the optical processing turntable.

[0032] Figure 6A This is a side view schematic diagram of a wavelength conversion module according to an embodiment of the present invention.

[0033] Figure 6B for Figure 6A A three-dimensional schematic diagram of the wavelength conversion module from one perspective.

[0034] Figure 6C for Figure 6A A three-dimensional schematic diagram of the wavelength conversion module from another perspective.

[0035] Figure 6D forFigure 6A A cross-sectional schematic diagram of the wavelength conversion module. Detailed Implementation

[0036] The foregoing descriptions and other technical contents, features, and effects of this invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0037] Figure 1 This is a schematic diagram of a projection device according to an embodiment of the present invention. Please refer to... Figure 1 In this embodiment, the projection device 10 includes a light source module 12, an optical processing turntable 100a, a light valve 14, and a projection lens 16. The light source module 12 is used to emit a light beam L1. The optical processing turntable 100a, for example, can be a wavelength conversion module (such as a phosphor wheel), a color filter wheel, or a diffusion wheel, and is disposed on the transmission path of the light beam L1. After passing through the optical processing turntable 100a, the light beam L1 can be converted into an illumination beam L1'. The light valve 14 is disposed on the transmission path of the illumination beam L1' to convert the illumination beam L1' into an image beam L2. The projection lens 16 is disposed on the transmission path of the image beam L2 to convert the image beam L2 into a projection beam L3.

[0038] Further, the light source module 12 used in the present embodiment is, for example, a laser diode (LD), such as a laser diode bank, a light emitting diode (LED), and the like. In particular, any light source that meets the volume requirement of the actual design can be implemented, and the present embodiment is not limited thereto. The light valve 14 is, for example, a reflective light modulator, such as a liquid crystal on silicon panel (LCoS panel), a digital micro-mirror device (DMD), and the like. In an embodiment, the light valve 14 is, for example, a transmissive light modulator, such as a transparent liquid crystal panel, an electro-optical modulator, a magneto-optic modulator, an acousto-optic modulator (AOM), and the like, but the present embodiment is not limited to the type and kind of the light valve 14. The method of the light valve 14 for converting the illumination beam L1' into the image beam L2 can be sufficiently taught, suggested, and implemented by the detailed steps and embodiments according to the common knowledge in the art, and thus will not be described herein. In addition, the projection lens 16 includes, for example, one or more combinations of optical lenses with refractive power, such as various combinations of aspherical lenses, including double-concave lenses, double-convex lenses, concave-convex lenses, convex-concave lenses, plano-convex lenses, and plano-concave lenses, and the like. In an embodiment, the projection lens 16 can also include planar optical lenses to reflect or transmit the image beam L2 from the light valve 14 into the projection beam L3 and project the projection device 10. In this regard, the present embodiment is not limited to the type and kind of the projection lens 16.

[0039] Figure 2A FIG. 1 is a schematic diagram of a projection device according to an embodiment of the present disclosure. Figure 1 FIG. 2 is a schematic diagram of an optical processing turntable according to an embodiment of the present disclosure. Figure 2B FIG. 3 is a perspective view of the optical processing turntable of FIG. 2 from one angle. Figure 2A FIG. 4 is a perspective view of the optical processing turntable of FIG. 2 from another angle. Figure 2C FIG. 5 is a cross-sectional view of the optical processing turntable of FIG. 2. Figure 2A FIG. 6 is a schematic diagram of an optical processing turntable according to another embodiment of the present disclosure. Figure 2D FIG. 7 is a schematic diagram of an optical processing turntable according to another embodiment of the present disclosure. Figure 2A FIG. 8 is a schematic diagram of an optical processing turntable according to another embodiment of the present disclosure.

[0040] FIG. 9 is a schematic diagram of a projection device according to another embodiment of the present disclosure. Figure 2A FIG. 10 is a schematic diagram of a projection device according to another embodiment of the present disclosure. Figure 2B FIG. 11 is a schematic diagram of a projection device according to another embodiment of the present disclosure. Figure 2C FIG. 12 is a schematic diagram of a projection device according to another embodiment of the present disclosure. Figure 2DIn this embodiment, the optical processing turntable 100a includes a substrate 110 and a driving assembly 120a. The substrate 110 has a holding hole 113 and a first side S1 and a second side S2 opposite to each other. The driving assembly 120a is disposed on the substrate 110 through the holding hole 113 to drive the substrate 110 to rotate. The driving assembly 120a has two locking surfaces F1a, F2a, wherein the two locking surfaces F1a, F2a are respectively located on the first side S1 and the second side S2 of the substrate 110.

[0041] In detail, the driving assembly 120a of this embodiment includes a rotor 122a and a stator 124a. The rotor 122a includes a shaft sleeve 122a1, a pivot 122a2 and a partition 122a3. The partition 122a3 divides the shaft sleeve 122a1 into two accommodation regions C1, C2 in a direction parallel to the substrate 110, and the pivot 122a2 penetrates the partition 122a3 from the first side S1 to the second side S2 and is located in the shaft sleeve 122a1. The stator 124a includes two stator parts 124a1, 124a2, wherein the two stator parts 124a1, 124a2 respectively have two locking surfaces F1a, F2a and are respectively disposed in the two accommodation regions C1, C2. The two locking surfaces F1a, F2a are adjacent to opposite ends of the shaft sleeve 122a1, wherein the two locking surfaces F1a, F2a are located in the shaft sleeve 122a1 and have the same outer diameter D1, and the outer diameter D1 is less than or equal to the inner diameter D2 of the shaft sleeve 122a1.

[0042] Further, in this embodiment, the substrate 110 is, for example, a substrate of a phosphor wheel, so the optical processing turntable 100a of this embodiment further includes a wavelength conversion layer 130. The substrate 110 has a first surface 112 and a second surface 114 opposite to each other. The wavelength conversion layer 130 is disposed on the first side S1 of the substrate 110 and located on the first surface 112. In other embodiments, the substrate 110 can also be, for example, a substrate of a color filter wheel or a diffusion wheel, which is not limited here. Here, the material of the substrate 110 is, for example, metal or ceramic, and the outer diameter of the substrate 110 can be, for example, 67 mm, and the thickness of the substrate 110 can be, for example, 0.7 mm, but is not limited to this.

[0043] In addition, the optical processing turntable 100a of this embodiment further includes an adjusting ring 140, which is disposed on the second side S2 of the substrate 110 and located on the second surface 114. The adjusting ring 140 of this embodiment is a hollow ring shape and is coaxially arranged with the axis of the driving assembly 120a. Here, the material of the adjusting ring 140 is, for example, metal, plastic, ceramic or composite material, which is not limited here. In addition, the optical processing turntable 100a of this embodiment further includes a reflective layer 150, wherein the reflective layer 150 is disposed between the substrate 110 and the wavelength conversion layer 130.

[0044] Since the two locking surfaces F1a and F2a of the drive assembly 120a in this embodiment are located on the first side S1 and the second side S2 of the substrate 110 respectively, the structure is symmetrically designed. Therefore, the center of mass of the optical processing turntable 100a in this embodiment can fall between the two locking surfaces F1a and F2a. When the optical processing turntable 100a is in operation, since both ends of the optical processing turntable 100a can be locked onto the optomechanism (not shown), the vibration and noise generated during the operation of the optical processing turntable 100a can be reduced, thereby improving the lifespan of the drive assembly 120a. Simulation results show that the axial vibration of the optical processing turntable 100a in this embodiment can be reduced to less than 20mg. In short, the optical processing turntable 100a in this embodiment uses a symmetrical or approximately symmetrical structure arranged on both sides of the substrate 110 to adjust the overall center of mass, thereby achieving structural balance and improving dynamic balance.

[0045] It must be noted that the following embodiments use the component reference numerals and some content from the foregoing embodiments, with the same reference numerals used to represent the same or similar components, and descriptions of the same technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.

[0046] Figure 3A This is a side view schematic diagram of an optical processing turntable according to another embodiment of the present invention. Figure 3B for Figure 3A A three-dimensional schematic diagram of the optical processing turntable from one perspective. Figure 3C for Figure 3A A three-dimensional schematic diagram of the optical processing turntable from another perspective. Figure 3D for Figure 3A A cross-sectional schematic diagram of the optical processing turntable.

[0047] Please refer to the following at the same time. Figure 2D as well as Figure 3D In this embodiment, the optical processing turntable 100b and Figure 2DThe optical processing turntable 100a of the present embodiment is similar to the optical processing turntable 100a of the first embodiment, except that the driving assembly 120b of the present embodiment comprises a rotor 122b and a stator 124b. The rotor 122b comprises a shaft sleeve 122b1, a pivot 122b2, and a partition 122b3. The stator 124b comprises two stator portions 124b1, 124b2, each of which has a first locking surface F1b disposed on the first side S1 of the substrate 110 and a second locking surface F2b disposed on the second side S2 of the substrate 110. The first locking surface F1b is located outside the shaft sleeve 122b1 and has a first outer diameter D3. The second locking surface F2b is located inside the shaft sleeve 122b1 and has a second outer diameter D5. In particular, the first outer diameter D3 is greater than the inner diameter D4 of the shaft sleeve 122b1, and the second outer diameter D5 is less than or equal to the inner diameter D4 of the shaft sleeve 122b1. In other words, the area of the first locking surface F1b is greater than the area of the second locking surface F2b, which can be used to meet the requirements of practical applications, such as adjusting the center of mass of the optical processing turntable 100b, locking to different optical machine mechanisms, cooperating with optical machine assembly mechanisms to reduce resonance simulation requirements, and the like.

[0048] For example, if the adjustment ring 140 located on the second side S2 of the substrate 110 is made of a heavier metal material, the weight on the first side S1 of the substrate 110 can be slightly less than the weight on the second side S2. At this time, the area of the first locking surface F1b is greater than the area of the second locking surface F2b, so that the center of mass of the optical processing turntable 100b is away from the center of the optical processing turntable 100b, thereby lengthening the force arm and achieving the effects of structural balance and dynamic balance. In other embodiments not shown, the structural balance and dynamic balance effects of the optical processing turntable can also be achieved by changing the shapes of the first locking surface and the second locking surface.

[0049] In addition, please refer to Figure 3A , Figure 3B and Figure 3C , the rotor 122b of the present embodiment further comprises a groove structure 122b4 disposed on the first side S1 of the substrate 110 and connected to the periphery of the shaft sleeve 122b1. Here, the groove structure 122b4 is located on the first surface 112 of the substrate 110, and a balancing substance (not shown) can be filled into the groove structure 122b4 to achieve balance correction. In addition, the design of the groove structure 122b4 can also achieve the effect of structural balance of the weight on the first side S1 of the substrate 110 and the weight on the second side S2 of the substrate 110, so that the structures of the relative two sides of the substrate 110 are symmetrical or close to symmetrical, thereby reducing the vibration and noise caused by structural imbalance of the optical processing turntable 100b during operation.

[0050] Figure 4A A side view schematic diagram of an optical processing turntable according to another embodiment of the present application. Figure 4B Figure 4A ​A three-dimensional schematic diagram of the optical processing turntable from one perspective. Figure 4C for Figure 4A A three-dimensional schematic diagram of the optical processing turntable from another perspective. Figure 4D for Figure 4A A cross-sectional schematic diagram of the optical processing turntable.

[0051] Please refer to the following at the same time. Figure 2B as well as Figure 4B The optical processing turntable 100c in this embodiment and Figure 2B Similar to the optical processing turntable 100a, the difference between the two is that the optical processing turntable 100c of this embodiment also includes an auxiliary adjustment ring 160, wherein the auxiliary adjustment ring 160 is disposed on the first side S1 of the substrate 110 and is located on the first surface 112.

[0052] Furthermore, please also refer to Figure 4A , Figure 4B , Figure 4C as well as Figure 4D In this embodiment, an auxiliary adjustment ring 160 and an adjustment ring 140 are respectively provided on the first side S1 and the second side S2 of the substrate 110. The adjustment ring 140 and the auxiliary adjustment ring 160 have different external dimensions, but are not limited to this. In this embodiment, the outer diameter of the adjustment ring 140 is larger than the outer diameter of the auxiliary adjustment ring 160, and the orthographic projection of the auxiliary adjustment ring 160 on the substrate 110 completely overlaps with the orthographic projection of the adjustment ring 140 on the substrate 110. In another embodiment, the external dimensions of the adjustment ring 140 and the auxiliary adjustment ring 160 may be the same. Furthermore, the weight of the adjustment ring 140 and the auxiliary adjustment ring 160 may be the same or different, and can be adjusted according to the structural balance design of the actual optical processing turntable 100c.

[0053] In short, the purpose of the adjustment ring 140 and auxiliary adjustment ring 160 in this embodiment is not only to fill the balancing material to achieve structural balance of the optical processing turntable 100c, but also to meet the needs of practical applications through the design of the shape or size of the adjustment ring 140 and auxiliary adjustment ring 160. For example, adjusting the center of mass of the optical processing turntable 100c, locking different optomechanical mechanisms, and reducing resonance simulation requirements in conjunction with the optomechanical assembly mechanism can simultaneously reduce the vibration and noise caused by structural imbalance during the operation of the optical processing turntable 100c.

[0054] Figure 5A This is a side view schematic diagram of an optical processing turntable according to another embodiment of the present invention. Figure 5B for Figure 5A A three-dimensional schematic diagram of the optical processing turntable from one perspective. Figure 5C for Figure 5A A three-dimensional schematic diagram of the optical processing turntable from another perspective. Figure 5D forFigure 5A A cross-sectional schematic diagram of the optical processing turntable.

[0055] Please refer to the following at the same time. Figure 2C as well as Figure 5C In this embodiment, the optical processing turntable 100d and Figure 2C Similar to the optical processing turntable 100a, the difference lies in that the optical processing turntable 100d of this embodiment further includes an auxiliary wavelength conversion layer 170, wherein the auxiliary wavelength conversion layer 170 is disposed on the second side S2 of the substrate 110 and located on the second surface 114. Here, the wavelength conversion layer 130 and the auxiliary wavelength conversion layer 170 may have the same or different optical properties and may generate excitation beams of the same or different wavelengths, which is not limited here.

[0056] Furthermore, please also refer to Figure 5A , Figure 5B , Figure 5C as well as Figure 5D In this embodiment, a wavelength conversion layer 130 and an auxiliary wavelength conversion layer 170 are respectively disposed on the first side S1 and the second side S2 of the substrate 110. The wavelength conversion layer 130 and the auxiliary wavelength conversion layer 170 have different external dimensions, but are not limited to this. In another embodiment, the wavelength conversion layer 130 and the auxiliary wavelength conversion layer 170 may have the same external dimensions. Here, the orthographic projection of the wavelength conversion layer 130 on the substrate 110 does not overlap with the orthographic projection of the auxiliary wavelength conversion layer 170 on the substrate 110. In other embodiments not shown, the orthographic projection of the wavelength conversion layer 130 on the substrate 110 and the orthographic projection of the auxiliary wavelength conversion layer 170 on the substrate 110 may completely or partially overlap, and can be adjusted according to the structural balance state of the actual optical processing turntable 100d.

[0057] In short, the configuration of the wavelength conversion layer 130 and the auxiliary wavelength conversion layer 170 in this embodiment can achieve both optical design and structural balance. Through the design of the shape and size of the wavelength conversion layer 130 and the auxiliary wavelength conversion layer 170, the needs of actual applications can be met, such as adjusting the center of mass of the optical processing turntable 100d, locking different optomechanical mechanisms, and reducing the need for resonance simulation in conjunction with the optomechanical assembly mechanism. In this way, the vibration and noise caused by structural imbalance during the operation of the optical processing turntable 100d can be reduced at the same time.

[0058] Figure 6A This is a side view schematic diagram of a wavelength conversion module according to an embodiment of the present invention. Figure 6B for Figure 6A A three-dimensional schematic diagram of the wavelength conversion module from one perspective. Figure 6C for Figure 6A A three-dimensional schematic diagram of the wavelength conversion module from another perspective. Figure 6D for Figure 6AA cross-sectional view of a wavelength conversion module.

[0059] Please refer to Figure 6A , Figure 6B , Figure 6C and Figure 6D , the optical processing turntable of the present embodiment is substantially a wavelength conversion module 100e. In detail, the wavelength conversion module 100e of the present embodiment comprises a substrate 110, a first wavelength conversion layer 130e, a second wavelength conversion layer 170e, a first adjusting ring 140e, a second adjusting ring 160e, and a driving assembly 120e. The substrate 110 has a holding hole 113, and a first side S1 and a second side S2 opposite to each other. The first wavelength conversion layer 130e is disposed on the first side S1 of the substrate 110, and the second wavelength conversion layer 170e is disposed on the second side S2 of the substrate 110. The first wavelength conversion layer 130e and the second wavelength conversion layer 170e can have the same or different outer dimensions. The first adjusting ring 140e is disposed on the first side S1 of the substrate 110, and the second adjusting ring 160e is disposed on the second side S2 of the substrate 110. The first adjusting ring 140e and the second adjusting ring 160e can have the same or different outer dimensions. The driving assembly 120e is disposed on the substrate 110 through the holding hole 113 to drive the substrate 110 to rotate. The driving assembly 120e has a locking surface F, and the locking surface F is located on the second side S2 of the substrate 110.

[0060] Furthermore, the driving assembly 120e of the present embodiment comprises a rotor 122e and a stator 124e. The rotor 122e comprises a shaft sleeve 122e1 and a pivot shaft 122e2. The pivot shaft 122e2 penetrates the shaft sleeve 122e1 from the first side S1 to the second side S2. The stator 124e has a locking surface F and is located in the shaft sleeve 122e1, and the outer diameter D7 of the locking surface F is less than or equal to the inner diameter D6 of the shaft sleeve 122e1. In addition, the wavelength conversion module 100e of the present embodiment further comprises a reflective layer 150, wherein the reflective layer 150 is disposed between the substrate 110 and the first wavelength conversion layer 130e.

[0061] Since the locking surface F of the wavelength conversion module 100e and the optical machine (not shown) is only arranged on the second side S2 of the substrate 110, by arranging the first wavelength conversion layer 130e and the first adjusting ring 140e on the first side S1 of the substrate 110, and arranging the second wavelength conversion layer 170e and the second adjusting ring 160e on the second side S2 of the substrate 110, the design of the structures of the opposite sides of the substrate 110 is symmetrical or close to symmetrical, so that the center of mass of the wavelength conversion module 100e is adjusted to the optimal position. In this way, when the wavelength conversion module 100e is in operation, the vibration and noise caused by the unbalanced structure can be avoided or reduced, thereby improving the service life of the driving assembly 120e of the wavelength conversion module 100e.

[0062] In summary, embodiments of the present application have at least one of the following advantages or effects. In the optical processing turntable of the present application, the two locking surfaces of the driving assembly are respectively located on the first side and the second side of the substrate opposite to each other, so that the center of mass of the optical processing turntable falls between the two locking surfaces, thereby achieving the effects of structural balance and dynamic balance. Therefore, when the optical processing turntable is in operation, the vibration and noise can be effectively reduced due to the dynamic balance, thereby prolonging the service life of the driving assembly. In this way, the projection device using the optical processing turntable of the present application can effectively reduce the noise generated by structural vibration and prolong the service life.

[0063] The above description is only the preferred embodiments of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the claims and the content of the present application are still within the scope of the present application. In addition, any embodiment or claim of the present application does not necessarily achieve all the purposes or advantages or features disclosed in the present application. In addition, the abstract and title are only used to assist the patent document retrieval, and do not limit the scope of the present application. In addition, the terms "first", "second" and the like mentioned in the specification or claims are only used to name elements or distinguish different embodiments or ranges, and do not limit the upper or lower limit of the number of elements.

[0064] Explanation of reference signs:

[0065] 10: projection device

[0066] 12: light source module

[0067] 14: light valve

[0068] 16: projection lens

[0069] 100a, 100b, 100c, 100d: optical processing turntable

[0070] 100e: wavelength conversion module

[0071] 110: substrate

[0072] 112: first surface

[0073] 113: retaining hole

[0074] 114: second surface

[0075] 120a, 120b, 120e: driving assembly

[0076] 122a, 122b, 122e: rotor

[0077] 122a1, 122b1, 122e1: shaft sleeve

[0078] 122a2, 122b2, 122e2: pivot

[0079] 122a3, 122b3: partition

[0080] 124a, 124b, 124e: stator

[0081] 124a1, 124a2, 124b1, 124b2: stator portion

[0082] 130: wavelength conversion layer

[0083] 130e: first wavelength conversion layer

[0084] 140: adjustment ring

[0085] 140e: first adjustment ring

[0086] 150: reflection layer

[0087] 160: auxiliary adjustment ring

[0088] 160e: second adjustment ring

[0089] 170: auxiliary wavelength conversion layer

[0090] 170e: second wavelength conversion layer

[0091] C1, C2: accommodation region

[0092] D1, D7: outer diameter

[0093] D2, D4, D6: inner diameter

[0094] D3: first outer diameter

[0095] D5: second outer diameter

[0096] F, F1a, F2a: locking surface

[0097] F1b: first locking surface

[0098] F2b: second locking surface

[0099] L1: light beam

[0100] L1’: illumination light beam

[0101] L2: image light beam

[0102] L3: projection light beam

[0103] S1: first side

[0104] S2: second side

Claims

1. An optical processing turntable for fixing in an optical engine of a projection device, characterized in that, The optical processing turntable comprises a substrate and a driving assembly, wherein: the substrate has a holding hole and a first side and a second side opposite to each other; and the driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate, the driving assembly has two locking surfaces, the two locking surfaces of the driving assembly are fixed with the optical machine, and the two locking surfaces are respectively located on the first side and the second side of the substrate.

2. The optical processing carousel of claim 1, wherein, The driving assembly comprises a rotor and a stator, the rotor comprises a shaft sleeve, a pivot and a partition plate, the partition plate divides the shaft sleeve into two accommodation areas in a direction parallel to the substrate, the pivot penetrates through the partition plate from the first side to the second side and is located in the shaft sleeve, the stator comprises two stator parts, the two stator parts have the two locking surfaces respectively and are arranged in the two accommodation areas respectively, and the two locking surfaces are adjacent to opposite ends of the shaft sleeve.

3. The optical processing carousel of claim 2, wherein, Further comprising: a wavelength conversion layer, the substrate has a first surface and a second surface opposite to each other, the wavelength conversion layer is arranged on the first side of the substrate and is located on the first surface.

4. The optical processing carousel of claim 3, wherein, Further comprising: an adjusting ring arranged on the second side of the substrate and located on the second surface.

5. The optical processing carousel of claim 4, wherein, The two locking surfaces are located in the shaft sleeve and have the same outer diameter, and the outer diameter is less than or equal to the inner diameter of the shaft sleeve.

6. The optical processing carousel of claim 5, wherein, Further comprising: an auxiliary adjusting ring arranged on the first side of the substrate and located on the first surface.

7. The optical processing carousel of claim 6, wherein, The adjusting ring and the auxiliary adjusting ring have the same or different outer dimensions.

8. The optical processing carousel of claim 5, wherein, Further comprising: an auxiliary wavelength conversion layer arranged on the second side of the substrate and located on the second surface.

9. The optical processing carousel of claim 8, wherein, The wavelength conversion layer and the auxiliary wavelength conversion layer have the same or different outer dimensions.

10. The optical processing carousel of claim 4, wherein, The two locking surfaces are respectively a first locking surface arranged on the first side and a second locking surface arranged on the second side, the first locking surface is located outside the shaft sleeve and has a first outer diameter, the second locking surface is located inside the shaft sleeve and has a second outer diameter, the first outer diameter is greater than the inner diameter of the shaft sleeve, and the second outer diameter is less than or equal to the inner diameter of the shaft sleeve.

11. The optical processing carousel of claim 10, wherein, The rotor further comprises a groove structure arranged on the first side of the substrate and connected to the periphery of the shaft sleeve, and the groove structure is located on the first surface.

12. The optical processing carousel of claim 4, wherein, Further comprising: a reflective layer arranged between the substrate and the wavelength conversion layer.

13. The optical processing carousel of claim 1, wherein, The substrate comprises a fluorescent powder wheel substrate, a filter color wheel substrate or a diffusion wheel substrate.

14. A projection apparatus, characterized by comprising: The projection device comprises a light source module, an optical machine, an optical processing turntable, a light valve and a projection lens, wherein: the light source module is used for emitting a light beam; the optical processing turntable is arranged on a transmission path of the light beam to be fixed in the optical machine of the projection device, the optical processing turntable comprises a substrate and a driving assembly, wherein: the substrate has a holding hole and a first side and a second side opposite to each other; and the driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate, the driving assembly has two locking surfaces, the two locking surfaces of the driving assembly are fixed with the optical machine, and the two locking surfaces are respectively located on the first side and the second side of the substrate. The driving assembly is arranged on the substrate through the holding hole to drive the substrate to rotate, and the driving assembly has two locking surfaces which are locked with the optical engine, and the two locking surfaces are respectively located on the first side and the second side of the substrate; The light valve is arranged on the transmission path of the light beam to convert the light beam into an image light beam; and The projection lens is arranged on the transmission path of the image light beam to convert the image light beam into a projection light beam.

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