Projection light machine

Abstract

The application discloses a projection light machine, which comprises a light machine shell, a transmission machine part, a lens barrel, a first connecting machine part and a second connecting machine part. The transmission machine part is provided with a first transmission part, the lens barrel is provided with a lens barrel flange, and the lens barrel flange is provided with a second transmission part. The first connecting machine part connects the light machine shell and the transmission machine part, and the transmission machine part and the light machine shell can move linearly in a first direction. The second connecting machine part connects the transmission machine part and the lens barrel flange, and the lens barrel flange and the transmission machine part can move linearly in a second direction. The first direction is different from the second direction.

Description

TECHNICAL FIELD

[0001] The present invention relates to a projection light machine. BACKGROUND

[0002] When a projector is in use, the position where the projector can be placed is limited, so the projection picture is designed to be able to be displaced on the projection plane, so that the user can adjust the projection picture to the appropriate position. One method of moving the projection picture is to move the projection lens relative to the light valve or other image source, wherein the light valve is, for example, a digital micro-mirror device (DMD), a liquid-crystal-on-silicon panel (LCOS panel), a transmissive liquid crystal panel or other appropriate spatial light modulator.

[0003] The movement of the projection lens relative to the light valve can be achieved by a lens shift device. Figure 1 Figure 1 is a side view of a prior art lens shift device and lens barrel. Please refer to Figure 1 The prior art lens shift device 50 is a whole module, which uses a four-layer structure of a combination substrate 52, a horizontal moving plate 54, a vertical moving plate 56 and a fixed plate 58 to move the lens barrel 60 of the projection lens. Among them, the lens barrel is fixed on the vertical moving plate 56, and the fixed plate 58 is fixed relative to the substrate 52. The user can drive the horizontal moving plate 54 to move horizontally relative to the substrate 52 by rotating the knob 59, and the vertical moving plate 56 moves vertically relative to the substrate 52, thereby driving the lens barrel 60 to move in two dimensions relative to the light valve or image source on the substrate 52.

[0004] Although the prior art lens shift device can achieve the function of independently adjusting the displacement of the projection lens in the horizontal and vertical directions. However, such a four-layer structure has problems of complex structure, large size, high cost, difficult assembly, etc. SUMMARY

[0005] The present invention provides a projection light machine, which can achieve the effects of simplifying parts, reducing size, improving precision and shortening assembly time.

[0006] One embodiment of the present invention provides a projection light machine, which comprises a light machine housing, a transmission member, a lens barrel, a first connecting member and a second connecting member. The transmission member is provided with a first transmission part, the lens barrel is provided with a lens barrel flange, and the lens barrel flange is provided with a second transmission part. The first connecting member connects the light machine housing and the transmission member, and the transmission member and the light machine housing can move linearly in a first direction relative to each other. The second connecting member connects the transmission member and the lens barrel flange, and the lens barrel flange and the transmission member can move linearly in a second direction relative to each other, wherein the first direction is different from the second direction.

[0007] One embodiment of the present invention provides a projection optical engine, including a housing, a transmission mechanism, a lens barrel, a first connecting mechanism, and a second connecting mechanism. The transmission mechanism has a first sliding portion, and the lens barrel has a lens barrel flange with a second sliding portion on the lens barrel flange. The first connecting mechanism is located at a position corresponding to the first sliding portion, connecting the housing and the transmission mechanism, allowing the housing and the transmission mechanism to move linearly in a first direction relative to each other. The second connecting mechanism is located at a position corresponding to the second sliding portion, connecting the transmission mechanism and the lens barrel flange, allowing the transmission mechanism and the lens barrel flange to move linearly in a second direction relative to each other.

[0008] An embodiment of the present invention provides a projection optical engine, including a housing, a transmission mechanism, and a lens barrel. The transmission mechanism has a first transmission part, a first connecting part, and a second connecting part. The transmission mechanism is connected to the housing at the first connecting part and the second connecting part. The first transmission part, the first connecting part, and the second connecting part are arranged on the same straight line. The lens barrel has a lens barrel flange, and the lens barrel flange has a second transmission part, a third connecting part, and a fourth connecting part. The lens barrel flange is connected to the transmission mechanism at the third connecting part and the fourth connecting part. The second transmission part, the third connecting part, and the fourth connecting part are arranged on the same straight line.

[0009] In embodiments of the present invention, the existing housing of the projection optical engine replaces the substrate of the conventional lens shift device, and a lens barrel flange is provided on the lens barrel to replace the vertical moving plate of the conventional lens shift device. Furthermore, in embodiments of the present invention, connecting components can be used to replace the fixing plate of the conventional lens shift device. Therefore, the projection optical engine of the embodiments of the present invention adopts a two-layer structure, replacing the existing four-layer structure, achieving the effects of simplifying parts, reducing size, improving precision, and shortening assembly time.

[0010] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a side view schematic diagram of an existing lens shift device and lens barrel.

[0012] Figure 2 This is a three-dimensional schematic diagram of a projection optical engine according to an embodiment of the present invention.

[0013] Figure 3 For along Figure 2 A schematic cross-sectional view of line II.

[0014] Figure 4 for Figure 2 A frontal view of the projection optical engine.

[0015] Figure 5 This is a three-dimensional schematic diagram of a projection optical engine according to another embodiment of the present invention.

[0016] Figure 6 This is a three-dimensional schematic diagram of a projection optical engine according to another embodiment of the present invention.

[0017] Figure 7 This is a three-dimensional schematic diagram of a projection optical engine according to another embodiment of the present invention.

[0018] Figure 8 This is a three-dimensional schematic diagram of a projection optical engine according to another embodiment of the present invention. Detailed Implementation

[0019] Figure 2 This is a three-dimensional schematic diagram of a projection optical engine according to an embodiment of the present invention. Figure 3 For along Figure 2 A cross-sectional schematic diagram of line II, and Figure 4 for Figure 2 A frontal view of the projection optical engine. Please refer to... Figure 2 , Figure 3 and Figure 4 The projection optical engine 100 in this embodiment includes an optical engine housing 110 (i.e., a housing), a transmission mechanism 200, a lens barrel 300, and at least a first connecting mechanism 400. Figure 4 The example uses three first connecting components 400 and at least one second connecting component 500. Figure 4 (The example uses three second connecting components 500). The transmission component 200 has a first transmission part 120, and the lens barrel 300 has a lens barrel flange 310, with a second transmission part 130 on the lens barrel flange 310. The first connecting component 400 connects the optical engine housing 110 and the transmission component 200, and the transmission component 200 and the optical engine housing 110 can move linearly in a relative first direction D1. The second connecting component 500 connects the transmission component 200 and the lens barrel flange 310, and the lens barrel flange 310 and the transmission component 200 can move linearly in a relative second direction D2, wherein the first direction D1 and the second direction D2 are different. In this embodiment, the first direction D1 is, for example, perpendicular to the second direction D2, but the invention is not limited thereto.

[0020] The term "connecting component" refers to the temporary or permanent combination of two or more machine parts. This combination does not preclude relative movement between the two parts; under certain circumstances, a certain degree of relative movement is still permitted. Common connecting components include bolts, nuts, screws, rivets, pins, keys, threaded bolts, sleeves, claws, shoulder bolts, or combinations thereof. Transmission components, on the other hand, are those used to transmit force or motion. Common transmission components include gears, pulleys, sprockets, couplings, shafts, cams, racks, some gears, threads, worm gears, or combinations thereof. The transmission part on a machine part refers to the portion of the machine part used to transmit force or motion. The sliding part on a machine part refers to the portion of the machine part that can slide relative to other machine parts. This can be active or passive, depending on the configuration of the two corresponding machine parts. For example, if one machine part has a guide groove as a sliding part, another machine part can also have a protrusion extending into that guide groove as a sliding part, or it can be connected by another movable connecting component, with the part connecting the connecting component serving as the sliding part.

[0021] In this embodiment, the transmission component 200 is, for example, an adjustment piece movable relative to the optical engine housing 110 along a first direction D1, i.e., a plate. Each of the first transmission part 120 and the second transmission part 130 includes a cam, rack, partial gear, thread, worm gear, gear, pulley, sprocket, coupling, shaft, or a combination thereof. Figure 2 In some embodiments, the first transmission part 120 is, for example, a partial gear or a worm gear, while the second transmission part 130 may have threads on the inner wall of the through hole 132, but the invention is not limited thereto. The transmission component 200 is provided with a first sliding part 210, and the lens barrel flange 310 is provided with a second sliding part 312. Each of the first sliding part 210 and the second sliding part 312 is, for example, a guide part used to guide the direction of the lens barrel flange 310 or the transmission component 200, and this guide part is, for example, a structure in the shape of a guide groove, guide rod, or guide rail. Figure 2 and Figure 4 In this context, the first sliding part 210 and the second sliding part 312 are, for example, guide grooves.

[0022] Each of the first connecting component 400 and the second connecting component 500 includes screws, rivets, sleeves, claws, shoulder bolts, bolts, nuts, screws, pins, keys, or combinations thereof. Figures 2 to 4In this invention, both the first connecting component 400 and the second connecting component 500 are, for example, shoulder screws, but the invention is not limited thereto. The first connecting component 400 is located at a corresponding position in the first sliding portion 210, connecting the optical engine housing 110 and the transmission component 200, allowing the optical engine housing 110 and the transmission component 200 to move linearly in a first direction D1 relative to each other. That is, a portion of the first connecting component 400 is located in the first sliding portion 210 (i.e., within the guide groove), and the first sliding portion 210 can slide relative to the first connecting component 400. The second connecting component 500 is located at a corresponding position in the second sliding portion 312, connecting the transmission component 200 and the lens barrel flange 310, allowing the transmission component 200 and the lens barrel flange 310 to move linearly in a second direction D2 relative to each other. That is, a portion of the second connecting component 500 is located in the second sliding portion 312 (i.e., within the guide groove), and the second sliding portion 312 can slide relative to the second connecting component 500.

[0023] In this embodiment, the projection optical engine 100 further includes a first transmission mechanism 140. A first transmission part 142 is provided on a component of the first transmission mechanism 140, and contacts the first transmission part 120. The first transmission mechanism 140 may include a gear, rack, screw, worm gear, or a combination thereof. Figure 2 In one embodiment, the first transmission mechanism 140 is a worm gear. The teeth on this worm gear mesh with the teeth of the first transmission part 120 (i.e., the worm wheel), so when the worm gear rotates, it drives the first transmission part 120 to rotate. One end of the first transmission part 120 may have an enlarged hole 122, and one end of the transmission component 200 may have a protrusion 220, which may be located in the enlarged hole 122 and constrained by it. Therefore, when the first transmission part 120 rotates, the force applied to the protrusion 220 by the wall of the enlarged hole 122 causes the transmission component 200 to move relative to the optical engine housing 110 along the first direction D1. In another embodiment, one end of the first transmission part 120 may have a protrusion, and one end of the transmission component 200 may have a corresponding enlarged hole.

[0024] In this embodiment, the projection optical engine 100 further includes a second transmission mechanism 150. A second transmission part 152 is provided on a component of the second transmission mechanism 150, and contacts the second transmission part 130. The second transmission mechanism 150 may include a gear, rack, screw, worm gear, or a combination thereof. Figure 2In one embodiment, the second transmission mechanism 150 is a screw. The teeth on this screw can mesh with the teeth of the second transmission part 130 on the inner wall of the through hole 132. Therefore, when the screw rotates, it drives the second transmission part 130 to move along the second direction D2. One end of the second transmission part 130 may have an opening 134, and one end of the transmission component 200 may have a protrusion 230, which may be located in the opening 134 and restricted by the inner wall of the opening 134. Therefore, when the second transmission part 130 moves along the second direction D2, the inner wall of the opening 134 applies force to the protrusion 230, causing the lens barrel flange 310, together with the lens barrel 300, to move relative to the transmission component 200 and the optical engine housing 110 along the second direction D2. In another embodiment, one end of the second transmission part 130 may have a protrusion, and one end of the transmission component 200 may have a corresponding opening.

[0025] In this embodiment, the operation of the first transmission mechanism 140 and the second transmission mechanism 150 allows the lens barrel 300 to move relative to the optical engine housing 110 in two dimensions, the first direction D1 and the second direction D2, and these two movements can be adjusted independently. The lens barrel 300 may contain a projection lens, and a light valve 160 or other image source may be provided on one side of the lens barrel 300 in the direction opposite to the third direction D3. This light valve 160 can be fixed to the optical engine housing 110. The light valve 160 may be, for example, a digital micromirror element, a silicon-based liquid crystal panel, a transmissive liquid crystal panel, or other suitable spatial light modulator. When the lens barrel 300 moves relative to the optical engine housing in two dimensions, it also moves relative to the light valve 160 or other image source in two dimensions (i.e., in the first direction D1 and the second direction D2), thereby adjusting the position of the projected image. In this embodiment, the optical axis of the projection lens is parallel to the third direction D3, while the first direction D1, the second direction D2, and the third direction D3 are, for example, perpendicular to each other.

[0026] In this embodiment, the optical engine housing 110 of the projection optical engine 100 is used to replace the substrate of the existing lens shift device, and a lens barrel flange 310 is provided on the lens barrel 300 to replace the vertical moving plate of the existing lens shift device. Furthermore, in this embodiment, the first connecting component 400 and the second connecting component 500 can be used to replace the fixing plate of the existing lens shift device. Therefore, the projection optical engine 100 of this embodiment adopts a two-layer structure, replacing the existing four-layer structure, achieving the effects of simplifying parts, reducing size, improving precision, and shortening assembly time.

[0027] In this embodiment, as Figure 3As illustrated, the first connecting component 400 is locked to the optical engine housing 110 through the spring 172, metal washer 174, polymer washer 176, and polymer sleeve 178. The polymer sleeve 178 is located within the first sliding portion 210 (e.g., guide groove), which is adapted to slide relative to the polymer sleeve 178. The polymer washer 176 and polymer sleeve 178 are made of materials such as polyoxymethylene (POM), Teflon, or other suitable polymer materials, which can effectively reduce friction during sliding, but the invention is not limited thereto. Furthermore, the shoulder of the first connecting component 400 (shoulder screw) can apply pressure to the polymer washer 176 through the spring 172 and metal washer 174, so that the bottom of the polymer sleeve 178 can clamp the portion of the transmission component 200 attached to the first sliding portion 210 with a suitable clamping force, so that the transmission component 200 has a suitable fixing effect when it is not moving. Similarly, the second connecting component 500 can also be coupled with the spring 172, metal gasket 174, polymer gasket 176 and polymer sleeve 178 as described above, and pass through the second sliding part 312 of the lens barrel flange 310 and be locked to the transmission component 200. Its working method and effect are as described above, and will not be repeated here.

[0028] like Figure 4 As illustrated, the transmission component 200 has three first sliding portions 210, which can also be considered as connecting portions, and two of the first sliding portions 210 can be considered as first connecting portions 210a and second connecting portions 210b. The lens barrel flange 310 has three second sliding portions 312, which can also be considered as connecting portions, and two of the second sliding portions 312 can be considered as third connecting portions 312a and fourth connecting portions 312b. The transmission component 200 is connected to the optical engine housing 110 at the positions of the first connecting portions 210a and second connecting portions 210b, for example, through the first connecting component 400 as described above. The first transmission portion 120, the first connecting portion 210a, and the second connecting portion 210b are arranged on the same straight line L1. The lens barrel flange 310 is connected to the transmission component 200 at the positions of the third connecting portions 312a and fourth connecting portions 312b, for example, through the second connecting component 500 as described above. The second transmission part 130, the third connecting part 312a and the fourth connecting part 312b are located on the same straight line L2.

[0029] More specifically, the protrusion 220, the first joint 210a, and the second joint 210b are all located on the same straight line L1, and the protrusion 230, the third joint 312a, and the fourth joint 312b are all located on the same straight line L2. That is, the point of force application and the guide groove are on the same straight line, which can avoid generating excessive torque and causing improper rotation of the lens barrel 300. In addition, the three first sliding parts 210 and the three second sliding parts 312 each form a double straight groove to serve as a linear moving guide rail, and the dimensional tolerance is easy to control.

[0030] Figure 5 This is a perspective view of a projection optical engine according to another embodiment of the present invention. Please refer to... Figure 2 and Figure 5 The projection optical engine 100c in this embodiment (please refer to...) Figure 5 Similar to Figure 2 The projection optical engine 100 in this embodiment differs from the projection optical engine 100c in that it further includes manual adjustment knobs 182 and 184, which are respectively connected to the first transmission mechanism 140 (e.g., a worm gear) and the second transmission mechanism 150 (e.g., a screw). When the user rotates the manual adjustment knobs 182 and 184, the worm gear and screw can be rotated, thereby causing the lens barrel 300 to move in two dimensions relative to the optical engine housing 110 in the first direction D1 and the second direction D2, thus achieving the effect of adjusting the position of the image.

[0031] In this embodiment, the manual adjustment knobs 182 and 184 may have an anti-locking structure. When the first sliding part 210 and the second sliding part 312 slide to the end and the manual adjustment knobs 182 and 184 continue to rotate, the manual adjustment knobs 182 and 184 will rotate freely relative to the first transmission mechanism 140 and the second transmission mechanism 150, and will not provide excessive torque to the manual adjustment knobs 182 and 184, which would cause the mechanism to jam and make it difficult to move in the other direction.

[0032] Figure 6 This is a three-dimensional schematic diagram of a projection optical engine according to another embodiment of the present invention. Please refer to... Figure 2 and Figure 6 The projection optical engine 100d in this embodiment (please refer to...) Figure 6 Similar to Figure 2The projection optical engine 100d of this embodiment further includes a drive gear 192, which contacts the first transmission mechanism 140 and provides power to drive the first transmission mechanism 140, thereby driving the transmission component 200. For example, the drive gear 192 can rotate to drive the gear 193 connected to the first transmission mechanism 140, thereby driving the first transmission mechanism 140 to rotate. The projection optical engine 100d of this embodiment further includes a drive gear 194, which contacts the second transmission mechanism 150 and provides power to drive the second transmission mechanism 150, thereby driving the lens barrel flange 310. For example, the drive gear 194 can rotate to drive the gear 195 connected to the second transmission mechanism 150, thereby driving the second transmission mechanism 150 to rotate.

[0033] In this embodiment, the projection optical engine 100d further includes a power source 610, which contacts the first transmission mechanism 140 (e.g., through drive gears 192 and 193), providing power to drive the first transmission mechanism 140, thereby driving the transmission component 200. Furthermore, in this embodiment, the projection optical engine 100d further includes a power source 620, which contacts the second transmission mechanism 150 (e.g., through drive gears 194 and 195), providing power to drive the second transmission mechanism 150, thereby driving the lens barrel flange 310. In this embodiment, power sources 610 and 620 are, for example, motors. This achieves the effect of electrically controlling the movement of the lens barrel 300 relative to the optical engine housing 110 in a two-dimensional direction. The wheel-like structure in this embodiment (e.g., drive gears 192, 194, or gears 193, 195, etc.) may also have the anti-locking structure described above.

[0034] Figure 7 This is a perspective view of a projection optical engine according to another embodiment of the present invention. Please refer to... Figure 7 The projection optical engine 100e in this embodiment and Figure 2 Similar to the projection optical engine 100, but with the following differences. In this embodiment, the first transmission part 120e can be a gear, still having the enlarged hole 122 of the first transmission part 120 to accommodate the protrusion 220. Furthermore, the first transmission mechanism 140e is, for example, a gear set, which meshes with the first transmission part 120e to drive it. Additionally, the second transmission part 130a is, for example, a connecting rod, with a threaded inner wall of a through hole at one end to mesh with the thread of the second transmission mechanism 150 (i.e., the screw). The other end of the second transmission part 130a is connected to the lens barrel flange 310. Furthermore, the projection optical engine 100e may also include a gear set 150e, the teeth of which mesh with the teeth at one end of the second transmission mechanism 150 (i.e., the screw). In this way, the gear set 150e can drive the screw to rotate.

[0035] Figure 8 This is a perspective view of a projection optical engine according to another embodiment of the present invention. Please refer to... Figure 8 In this embodiment, the projection optical engine 100f and Figure 2 The projection optical engine 100 is similar, but the differences are as follows. In this embodiment, the first transmission part 120f can be a rack connected to the transmission component 200, while the first transmission mechanism 140f is a gear whose teeth mesh with the rack's teeth. When the first transmission mechanism 140f rotates, it can drive the first transmission part 120f (i.e., the rack) to move along the first direction D1, thereby driving the transmission component 200 to move along the first direction D1.

[0036] Furthermore, in this embodiment, the second transmission part 130f can be a rack connected to the lens barrel flange 310, while the second transmission mechanism 150f is a gear whose teeth mesh with the teeth of the second transmission part 130f (i.e., the rack). When the second transmission mechanism 150f rotates, it can drive the second transmission part 130f (i.e., the rack) to move along the second direction D2, thereby driving the lens barrel flange 310 to move along the second direction D2.

[0037] In summary, embodiments of the present invention use the existing housing of the projection optical engine to replace the substrate of the conventional lens shift device, and provide a lens barrel flange on the lens barrel to replace the vertical moving plate of the conventional lens shift device. Furthermore, in embodiments of the present invention, connecting components can be used to replace the fixing plate of the conventional lens shift device. Therefore, the projection optical engine of the embodiments of the present invention adopts a two-layer structure, replacing the existing four-layer structure, achieving the effects of simplifying parts, reducing size, improving precision, and shortening assembly time.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the methods and techniques disclosed above without departing from the scope of the present invention to create equivalent embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A projection optical engine, characterized in that, The projection optical engine includes: A light machine housing; A transmission component, comprising a first transmission part; A lens barrel is provided with a lens barrel flange, and a second transmission part is provided on the lens barrel flange; A first connecting component connects the optomechanical housing and the transmission component, wherein the transmission component and the optomechanical housing are configured to move linearly in a relative first direction; and A second connecting component connects the transmission component and the lens barrel flange, and the lens barrel flange and the transmission component are used to move linearly in a relative second direction; and the first direction is different from the second direction.

2. A projection optical engine, characterized in that, The projection optical engine includes: A casing; A transmission component is provided with a first sliding part; A lens barrel is provided with a lens barrel flange, and a second sliding part is provided on the lens barrel flange; A first connecting component, disposed at a position corresponding to the first sliding portion, connects the housing and the transmission component to enable the housing and the transmission component to move linearly in a first direction relative to each other; and A second connecting component is disposed at a position corresponding to the second sliding part, connecting the transmission component and the lens barrel flange, for causing the transmission component and the lens barrel flange to move linearly in a relative second direction.

3. The projection optical engine as described in claim 1 or 2, characterized in that, Each of the first connecting component and the second connecting component includes screws, rivets, sleeves, claws, shoulder bolts, bolts, nuts, screws, pins, keys, or combinations thereof.

4. The projection optical engine as described in claim 1 or 2, characterized in that, Each of the first connecting component and the second connecting component includes a shoulder screw.

5. The projection optical engine as claimed in claim 1 or 2, wherein each of the lens barrel flange and the transmission component is provided with a guide portion for guiding the direction of the lens barrel flange or the transmission component, and the guide portion is a structure in the shape of a guide groove, a guide rod or a guide rail.

6. The projection optical engine as described in claim 5, characterized in that, A portion of each of the first connecting component and the second connecting component is disposed within the guide groove.

7. A projection optical engine, characterized in that, The projection optical engine includes: A casing; A transmission component, comprising a first transmission part, a first connecting part, and a second connecting part; the transmission component is connected to a housing at the first connecting part and the second connecting part; and the first transmission part, the first connecting part, and the second connecting part are arranged on the same straight line; and A lens barrel is provided with a lens barrel flange, and the lens barrel flange is provided with a second transmission part, a third connecting part and a fourth connecting part; the lens barrel flange is connected to the transmission mechanism at the positions of the third connecting part and the fourth connecting part; and the second transmission part, the third connecting part and the fourth connecting part are located on the same straight line.

8. The projection optical engine as described in claim 1 or 7, characterized in that, Each of the first transmission unit and the second transmission unit includes a cam, rack, partial gear, thread, worm, gear, pulley, sprocket, coupling, shaft, or a combination thereof.

9. The projection optical engine as described in claim 1 or 7, characterized in that, The projection optical engine further includes a first transmission mechanism, and a component of the first transmission mechanism is provided with a first transmission part, which contacts the first transmission part on the transmission component.

10. The projection optical engine as described in claim 9, characterized in that, The first transmission mechanism includes a gear, rack, screw, worm, or a combination thereof.

11. The projection optical engine as described in claim 9, characterized in that, The projection optical engine further includes a drive gear or a power source that contacts the first transmission mechanism to provide power, drive the first transmission mechanism, and thereby drive the transmission component.

12. The projection optical engine as described in claim 11, characterized in that, The power source is an engine.

13. The projection optical engine as described in claim 1 or 7, characterized in that, The projection optical engine further includes a second transmission mechanism, on which a second transmission part is provided, which contacts the second transmission part on the lens barrel flange.

14. The projection optical engine as described in claim 13, characterized in that, The projection optical engine further includes a drive gear or a power source that contacts the second transmission mechanism to provide power to drive the second transmission mechanism, thereby driving the lens barrel flange.

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