Light machine module and projection device
By designing a movable reflector adjustment mechanism in the projector, the optical path adjustment is simplified by using fulcrum and axial adjustment parts, the problems of optical path offset and high cost are solved, and an efficient and low-cost optical path configuration is achieved.
Patent Information
- Application Number
- CN202310704763.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-14
- Publication Date
- 2024-12-17
AI Technical Summary
The optical path design in existing projectors is offset by accumulated tolerances, the adjustment mechanism is complex and costly, and the airtight design increases the number of parts and assembly deviations.
An optical machine module is designed, including a movable reflector adjustment mechanism, which adjusts the position and angle of the reflector through the fulcrum adjustment member and the axial adjustment member, avoids disassembly of the optical machine housing and reduces the airtight design.
Simplifies the adjustment process, reduces costs, avoids dust entering and improves optical performance, providing the required optical path configuration.
Smart Images
Figure CN119148453A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an optical machine module and a projection device, and in particular to an optical machine module and a projection device with a reflector adjustment mechanism. Background Art
[0002] The optical path design in a projector is composed of multiple optical components, each of which is fixed by a corresponding mechanical component. Since each optical component and its corresponding mechanical component have tolerances, cumulative tolerances will be generated when the optical system is assembled, causing optical path deviation and affecting optical performance.
[0003] Conventional adjustment mechanisms require numerous parts, resulting in time-consuming assembly and high module costs. The two-axis adjustment mechanism can pull against each other, hindering intuitive optical performance. The fixed and adjustable components require an airtight design to prevent dust intrusion and maintain optical performance. This further increases the number of parts, leading to assembly deviations and increasing module costs.
[0004] Therefore, it is necessary to design a new optical machine module and projection device to overcome the above-mentioned defects. Summary of the Invention
[0005] An object of the present invention is to provide an optical machine module and a projection device, which can have a reflector adjustment mechanism to adjust the angle of the reflector to obtain a desired light path.
[0006] To achieve the above-mentioned object, the present invention provides an optical machine module, comprising: an optical machine housing; at least one reflector adjustment mechanism, each of the reflector adjustment mechanisms comprising: at least one reflector, located in the optical machine housing; an adjustment seat, movably disposed in the optical machine housing, the at least one reflector being disposed on the adjustment seat; a fulcrum adjustment member, comprising a fulcrum adjustment portion and a fulcrum connecting portion, wherein the fulcrum adjustment portion is located outside the optical machine housing, the fulcrum connecting portion extends into the optical machine housing and is adjustably connected to the center of the adjustment seat, so as to adjust the adjustment seat relative to the optical machine housing. the position of the optical machine housing; a first axial adjustment member, comprising a first axial adjustment portion and a first connecting portion, wherein the first axial adjustment portion is located outside the optical machine housing, the first connecting portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the first axial direction; and a second axial adjustment member, comprising a second axial adjustment portion and a second connecting portion, wherein the second axial adjustment portion is located outside the optical machine housing, the second connecting portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the second axial direction.
[0007] Preferably, a line connecting the first axial adjustment member and the fulcrum adjustment member is perpendicular to a line connecting the second axial adjustment member and the fulcrum adjustment member.
[0008] Preferably, the optical machine housing includes a first positioning portion, the adjustment seat includes a second positioning portion corresponding to the first positioning portion, and the adjustment seat is positioned on the optical machine housing through the cooperation between the second positioning portion and the first positioning portion.
[0009] Preferably, the first positioning portion includes a hemispherical groove, and the second positioning portion includes a hemispherical surface located in the hemispherical groove.
[0010] Preferably, each of the reflector adjustment mechanisms also includes a first elastic member, wherein the first elastic member is located outside the optical machine housing and abuts between the fulcrum adjustment member and the optical machine housing; or, each of the reflector adjustment mechanisms also includes a first elastic member, wherein the first elastic member is located inside the optical machine housing and abuts between the adjustment seat and the optical machine housing.
[0011] Preferably, each of the reflector adjustment mechanisms further includes a second elastic member located in the optical mechanical housing, surrounding the first connecting portion, and abutting between the adjustment seat and the optical mechanical housing.
[0012] Preferably, each of the reflector adjustment mechanisms further includes a third elastic member located in the optical mechanical housing, surrounding the second connecting portion, and abutting between the adjustment seat and the optical mechanical housing.
[0013] Preferably, the at least one reflective element of the reflective element adjustment mechanism includes a plurality of reflective elements, and the plurality of reflective elements are disposed on the adjustment seat.
[0014] Preferably, the adjustment seat includes a plurality of areas with step differences, and the plurality of reflective elements are respectively disposed in the plurality of areas.
[0015] Preferably, the at least one reflector adjustment mechanism comprises a plurality of independent reflector adjustment mechanisms.
[0016] The present invention also provides a projection device, comprising: the optical machine module as described above, for providing an illumination beam; an imaging module, located in the optical path of the illumination beam, for converting the illumination beam into an image beam; and a lens module, located in the optical path of the image beam, for projecting the image beam out of the projection device.
[0017] Compared to the prior art, embodiments of the present invention provide an optical machine module and projection device, wherein the adjustment seat of the reflector adjustment mechanism of the optical machine module is movably disposed within the optical machine housing, and the reflector is disposed on the adjustment seat. The fulcrum adjustment portion of the fulcrum adjustment member of the reflector adjustment mechanism is located outside the optical machine housing, and the fulcrum connection portion of the fulcrum adjustment member extends into the optical machine housing and is adjustably connected to the center of the adjustment seat to adjust the position of the adjustment seat relative to the optical machine housing. The first axial adjustment portion of the first axial adjustment member is located outside the optical machine housing, and the first connection portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat along a first axial direction. The second axial adjustment portion of the second axial adjustment member is located outside the optical machine housing, and the second connection portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat along a second axial direction. The optical machine module can adjust the position of the adjustment seat and its angles along the first and second axial directions by adjusting the fulcrum adjustment portion located outside the optical machine housing, and the first and second axial adjustment portions, thereby changing the position and angle of the reflector on the adjustment seat to provide a desired optical path. Furthermore, since the fulcrum adjustment portion and the first and second axial adjustment portions are located outside the optical machine housing, the adjustment process does not require disassembly of the optical machine housing, which is quite convenient and prevents dust from entering the optical machine housing. In addition, the reflector adjustment mechanism does not need to be airtight in the portion located inside the optical machine housing, which can effectively save costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a partial three-dimensional cross-sectional schematic diagram of an optical engine module according to an embodiment of the present invention.
[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram.
[0020] Figure 3 yes Figure 2 Explosion diagram.
[0021] Figure 4 yes Figure 2 Schematic diagram from another perspective.
[0022] Figure 5 yes Figure 4 Explosion diagram.
[0023] Figure 6 yes Figure 2 Schematic diagram of the explosion from another perspective.
[0024] Figure 7 It is a partial three-dimensional schematic diagram of an optical machine module according to another embodiment of the present invention.
[0025] Figure 8 FIG. 1 is a schematic diagram of a projection device according to an embodiment of the present invention. DETAILED DESCRIPTION
[0026] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the following detailed description is given in conjunction with the embodiments.
[0027] Figure 1 It is a partial three-dimensional cross-sectional schematic diagram of an optical engine module according to an embodiment of the present invention. Figure 2 yes Figure 1 A partial enlarged schematic diagram. Figure 3 yes Figure 2 Explosion diagram. Figure 4 yes Figure 2 Schematic diagram from another perspective. Figure 5 yes Figure 4 Explosion diagram. Figure 6 yes Figure 2 It should be noted that in order to clearly show the detailed structure of the reflector adjustment mechanism, other components in the optical machine housing are hidden.
[0028] See also Figures 1 to 6 The optical machine module 100 of this embodiment includes an optical machine housing 110 and at least one reflector adjustment mechanism 120. In this embodiment, the number of the reflector adjustment mechanism 120 is one, but this is not a limitation. Figure 6 As shown, the reflector adjustment mechanism 120 includes at least one reflector 130 , an adjustment seat 140 , a fulcrum adjustment member 150 , a first axial adjustment member 160 and a second axial adjustment member 170 .
[0029] In the present embodiment, the adjustment seat 140 is movably disposed within the optical machine housing 110, and the reflective member 130 is located within the optical machine housing 110 to reflect light from a light source (not shown). In addition, the reflective member 130 is disposed on the adjustment seat 140 so as to change position and angle along with the adjustment seat 140 to absorb the accumulated tolerances generated by the assembly of the mechanism. In the present embodiment, the number of reflective members 130 is, for example, two, but the number of reflective members 130 is not limited thereto. The adjustment seat 140, for example, includes a plurality of regions 144 and 145 having step differences, and the two reflective members 130 are respectively disposed on these regions 144 and 145 on the adjustment seat 140. Of course, in other embodiments, the two reflective members 130 may also be coplanar.
[0030] The optical engine module 100 of this embodiment further includes a fixing member 180 disposed on the reflector 130 . The fixing member 180 includes a plurality of buckles 182 that engage with the hooks 141 of the adjustment base 140 to fix the reflector 130 to the adjustment base 140 .
[0031] The optical machine housing 110 includes a first positioning portion 112 ( Figure 3), the adjustment seat 140 includes a second positioning portion 142 ( Figure 5 ), the adjustment seat 140 is positioned within the optical machine housing 110 through the cooperation of the second positioning portion 142 and the first positioning portion 112. In this embodiment, the first positioning portion 112 comprises a hemispherical recess, and the second positioning portion 142 comprises a hemispherical surface positioned within the hemispherical recess. The combination of the hemispherical surface and the hemispherical recess allows the second positioning portion 142 of the adjustment seat 140 to be easily positioned within the first positioning portion 112 of the optical machine housing 110, achieving a centering effect. Of course, in other embodiments, the shapes of the first and second positioning portions 112, 142 are not limited to this.
[0032] like Figure 6 As shown, the fulcrum adjustment member 150 includes a fulcrum adjustment portion 152 and a fulcrum connection portion 154. The fulcrum adjustment portion 152 is located outside the optical engine housing 110. The fulcrum connection portion 154 extends through the through-hole 113 into the optical engine housing 110 and is adjustably connected to the hole 143 in the center of the adjustment base 140 to adjust the position of the adjustment base 140 relative to the optical engine housing 110. In this embodiment, the fulcrum connection portion 154 has external threads that are screwed into the hole 143 of the adjustment base 140. Therefore, the assembler can rotate the fulcrum adjustment member 150 to move the adjustment base 140 closer to or further away from the first positioning portion 112 of the optical engine housing 110.
[0033] The reflector adjustment mechanism 120 further includes a first elastic member 156, which is located outside the optical mechanical housing 110 and abuts between the fulcrum adjustment member 150 and the optical mechanical housing 110. Specifically, the first elastic member 156 is sleeved on the fulcrum adjustment member 150 and located between the fulcrum adjustment portion 152 and the outer surface of the optical mechanical housing 110. The first elastic member 156 pushes the fulcrum adjustment portion 152 away from the outer surface of the optical mechanical housing 110, thereby firmly positioning the adjustment seat 140 within the optical mechanical housing 110. The first elastic member 156 is, for example, a spring, but may also be other components such as rubber.
[0034] In an embodiment not shown, the first elastic member 156 may also be located in the optical mechanical housing 110 and abutted between the adjustment base 140 and the optical mechanical housing 110 , thereby also achieving the effect of stably disposing the adjustment base 140 in the optical mechanical housing 110 .
[0035] In this embodiment, the first axial adjustment member 160 includes a first axial adjustment portion 162 and a first connecting portion 164. The first axial adjustment member 160 is located in the first axial direction A1 ( Figure 4). The first axial adjustment portion 162 is located outside the optical machine housing 110. The first connecting portion 164 extends through the through-hole 114 into the optical machine housing 110 and is adjustably connected to the adjustment base 140. In this embodiment, the first connecting portion 164 has an external thread that is threadedly connected to the screw hole 147 of the column 146 of the adjustment base 140 to adjust the angle of the adjustment base 140 along the first axial direction A1.
[0036] Therefore, the assembler can adjust the extent to which the first connection portion 164 extends into the screw hole 147 of the column 146 of the adjustment base 140 by rotating the first axial adjustment portion 162 , so as to deflect the adjustment base 140 along the first axial direction A1 and change the angle along the first axial direction A1 .
[0037] Furthermore, the reflector adjustment mechanism 120 further includes a second elastic member 166, which is located within the optical mechanical housing 110, surrounds the post 146 and the first connecting portion 164, and abuts between the adjustment base 140 and the optical mechanical housing 110. The second elastic member 166 can push the adjustment base 140 away from the inner surface of the optical mechanical housing 110, thereby ensuring that the adjustment base 140 is securely positioned within the optical mechanical housing 110. The second elastic member 166 is, for example, a spring, but may also be other components such as rubber.
[0038] Furthermore, the second axial adjustment member 170 includes a second axial adjustment portion 172 and a second connecting portion 174. The second axial adjustment member 170 is located at the second axial direction A2 ( Figure 4 ). The second axial adjustment portion 172 is located outside the optical mechanical housing 110. The second connecting portion 174 extends through the through-hole 115 into the optical mechanical housing 110 and is adjustably connected to the adjustment base 140. In this embodiment, the second connecting portion 174 has an external thread that is screwed into the screw hole 149 of the column 148 of the adjustment base 140 to adjust the angle of the adjustment base 140 along the second axial direction A2.
[0039] Therefore, the assembler can adjust the extent to which the second connection portion 174 extends into the screw hole 149 of the column 148 of the adjustment base 140 by rotating the second axial adjustment portion 172 , so as to deflect the adjustment base 140 along the second axial direction A2 and change the angle along the second axial direction A2 .
[0040] Furthermore, the reflector adjustment mechanism 120 further includes a third elastic member 176 located within the optical mechanical housing 110, surrounding the post 148 and the second connecting portion 174, and abutting between the adjustment base 140 and the optical mechanical housing 110. The third elastic member 176 can push the adjustment base 140 away from the inner surface of the optical mechanical housing 110, thereby ensuring that the adjustment base 140 is securely positioned within the optical mechanical housing 110. The third elastic member 176 is, for example, a spring, but may also be other components such as rubber.
[0041] It is worth noting that in this embodiment, because the fulcrum connection portion 154 is connected to the center of the adjustment base 140, and the line connecting the first axial adjustment member 160 and the fulcrum adjustment member 150 (the first axial direction A1) is perpendicular to the line connecting the second axial adjustment member 170 and the fulcrum adjustment member 150 (the second axial direction A2), the assembler can obtain intuitive optical performance feedback during the adjustment process of the first axial adjustment portion 162 and the second axial adjustment portion 172, which is very convenient and saves adjustment time.
[0042] The optical engine module 100 of this embodiment adjusts the position and angle of the adjustment base 140 along the first and second axes A1 and A2 by adjusting the fulcrum adjustment portion 152, the first axial adjustment portion 162, and the second axial adjustment portion 172 located outside the optical engine housing 110. This, in turn, changes the position and angle of the reflector 130 on the adjustment base 140. This effectively addresses the problem of cumulative tolerances, returning the optical path to its correct position to provide the desired optical path. Furthermore, the reflector adjustment mechanism 120 comprises a relatively small number of components, making assembly simple, convenient, and cost-effective.
[0043] Furthermore, because the fulcrum adjustment portion 152, the first axial adjustment portion 162, and the second axial adjustment portion 172 are located outside the optical mechanical housing 110, the adjustment process does not require disassembly of the optical mechanical housing 110, which is quite convenient and prevents dust from entering the optical mechanical housing 110. Furthermore, the portion of the reflector adjustment mechanism 120 located inside the optical mechanical housing 110 does not need to be airtight, which effectively saves costs.
[0044] Figure 7 FIG is a partial three-dimensional schematic diagram of an optical machine module according to another embodiment of the present invention. Figure 7 The main difference between the optical engine module 100 a of this embodiment and the optical engine module 100 of the previous embodiment is that, in this embodiment, the optical engine module 100 a includes a plurality of independent reflector adjustment mechanisms 120 . Figure 7 Two reflector adjustment mechanisms 120 are used as an example, but the number of reflector adjustment mechanisms 120 is not limited thereto. In this embodiment, the two reflector adjustment mechanisms 120 can be adjusted independently to provide a more precise light path.
[0045] Figure 8 is a schematic diagram of a projection device according to an embodiment of the present invention. Figure 8 The projection device 10 of this embodiment includes an optical module 100, an imaging module 20 and a lens module 30. The optical module 100 is, for example, Figure 1 The optical engine module 100 may also be Figure 7 The optical module 100a can be used to adjust the position and angle of the reflector 130 by using the reflector adjustment mechanism 120 to provide the required light path. However, the types of the optical modules 100 and 100a are not limited to Figure 1 or Figure 7 For restriction.
[0046] The optical engine module 100 is used to provide an illumination beam L1. The illumination beam L1 exits the optical engine module 100 along a desired optical path. The imaging module 20 is located in the optical path of the illumination beam L1 to convert the illumination beam L1 into an image beam L2. The imaging module 20 is, for example, a digital micromirror device (DMD), but the type of imaging module 20 is not limited to this. The lens module 30 is located in the optical path of the image beam L2 to project the image beam L2 out of the projection device 10.
[0047] In summary, the adjustment seat of the reflector adjustment mechanism of the optical machine module of the present invention can be movably arranged in the optical machine housing, and the reflector is arranged on the adjustment seat. The fulcrum adjustment portion of the fulcrum adjustment member of the reflector adjustment mechanism is located outside the optical machine housing, and the fulcrum connection portion of the fulcrum adjustment member extends into the optical machine housing and is adjustably connected to the center of the adjustment seat to adjust the position of the adjustment seat relative to the optical machine housing. The first axial adjustment portion of the first axial adjustment member is located outside the optical machine housing, and the first connection portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the first axial direction. The second axial adjustment portion of the second axial adjustment member is located outside the optical machine housing, and the second connection portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the second axial direction.
[0048] Therefore, the optical mechanism module of the present invention can adjust the position of the adjustment base and its angles in the first and second axial directions by adjusting the fulcrum adjustment portion and the first and second axial adjustment portions located outside the optical mechanism housing. This, in turn, changes the position and angle of the reflector on the adjustment base to provide the desired optical path. Furthermore, because the fulcrum adjustment portion and the first and second axial adjustment portions are located outside the optical mechanism housing, the adjustment process does not require disassembly of the optical mechanism housing, making it quite convenient and preventing dust from entering the housing. Furthermore, the portion of the reflector adjustment mechanism located inside the optical mechanism housing does not require an airtight design, effectively saving costs.
[0049] Although the present invention is described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as limiting the present invention. For the purpose of clearly describing the required components, the proportions in the schematic drawings do not represent the proportional relationships of the actual components.
[0050] The present invention has been described with reference to the above embodiments. However, the above embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements that do not depart from the spirit and scope of the present invention are intended to be protected by the present invention.
Claims
1. An optical machine module, characterized in that: include: Optical machine housing; At least one reflector adjustment mechanism, each reflector adjustment mechanism comprising: At least one reflective element is located in the optical machine housing; An adjustment seat is movably disposed in the optical machine housing, and the at least one reflective element is disposed on the adjustment seat; A fulcrum adjustment member, comprising a fulcrum adjustment portion and a fulcrum connection portion, wherein the fulcrum adjustment portion is located outside the optical machine housing, and the fulcrum connection portion extends into the optical machine housing and is adjustably connected to the center of the adjustment seat to adjust the position of the adjustment seat relative to the optical machine housing; A first axial adjustment member, comprising a first axial adjustment portion and a first connection portion, wherein the first axial adjustment portion is located outside the optical machine housing, and the first connection portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the first axial direction; and The second axial adjustment member includes a second axial adjustment portion and a second connecting portion, wherein the second axial adjustment portion is located outside the optical machine housing, and the second connecting portion extends into the optical machine housing and is adjustably connected to the adjustment seat to adjust the angle of the adjustment seat in the second axial direction.
2. The optical machine module according to claim 1, characterized in that: A line connecting the first axial adjustment member and the fulcrum adjustment member is orthogonal to a line connecting the second axial adjustment member and the fulcrum adjustment member.
3. The optical machine module according to claim 1, wherein: The optical machine housing includes a first positioning portion, the adjustment seat includes a second positioning portion corresponding to the first positioning portion, and the adjustment seat is positioned on the optical machine housing through the cooperation between the second positioning portion and the first positioning portion.
4. The optical machine module according to claim 3, characterized in that: The first positioning portion includes a hemispherical groove, and the second positioning portion includes a hemispherical surface located in the hemispherical groove.
5. The optical machine module according to claim 1, wherein: Each of the reflector adjustment mechanisms further includes a first elastic member, wherein the first elastic member is located outside the optical machine housing and abuts between the fulcrum adjustment member and the optical machine housing; Alternatively, each of the reflector adjustment mechanisms further includes a first elastic member, wherein the first elastic member is located in the optical machine housing and abuts against between the adjustment seat and the optical machine housing.
6. The optical machine module according to claim 1, wherein: Each of the reflector adjustment mechanisms further includes a second elastic member located in the optical machine housing, surrounding the first connecting portion, and abutting between the adjustment seat and the optical machine housing.
7. The optical machine module according to claim 1, wherein: Each of the reflector adjustment mechanisms further includes a third elastic member located in the optical machine housing, surrounding the second connecting portion, and abutting between the adjustment seat and the optical machine housing.
8. The optical machine module according to claim 1, wherein: The at least one reflective element of the reflective element adjustment mechanism comprises a plurality of reflective elements, and the plurality of reflective elements are arranged on the adjustment seat.
9. The optical machine module according to claim 8, characterized in that: The adjustment seat comprises a plurality of regions with step differences, and the plurality of reflective elements are respectively arranged in the plurality of regions.
10. The optical machine module according to claim 1, wherein: The at least one reflector adjustment mechanism includes a plurality of independent reflector adjustment mechanisms.
11. A projection device, characterized in that: include: The optical machine module according to any one of claims 1 to 10, used to provide an illumination beam; An imaging module is located on the optical path of the illumination beam to convert the illumination beam into an image beam; as well as The lens module is located on the optical path of the image beam to project the image beam out of the projection device.