Projector ray machine and projector

Abstract

The invention belongs to the technical field of projectors, and discloses a projector light machine and a projector. The projector light machine comprises a shell, a light source, a display assembly, a front Fresnel lens, a projection lens assembly and an adjusting mechanism. The shell is provided with a penetrating hole. The front Fresnel lens is rotationally arranged in the shell; the front Fresnel lens penetrates through the penetrating hole and extends out of the shell; the projection lens assembly is arranged on the shell in an angle-adjustable mode and located on the downstream portion of the front Fresnel lens. The adjusting mechanism is arranged outside the shell and comprises a driving assembly and a shifting piece, the shifting piece is provided with an abutting hole, the front Fresnel lens extends into the abutting hole, and the driving assembly is used for driving the shifting piece to move so that the hole wall of the abutting hole can abut against the front Fresnel lens to drive the front Fresnel lens to rotate. The rotating angle of the front Fresnel lens can be automatically adjusted, the projection effect is guaranteed, the structure is simple and reliable, the cost is low, in addition, a connecting structure is not needed to connect the adjusting mechanism with the front Fresnel lens, and the front Fresnel lens is convenient to disassemble, assemble and replace.

Description

Technical Field

[0001] The present invention relates to the technical field of projectors, and in particular to a projector optical machine and a projector. Background Art

[0002] Projectors are devices that project images or videos onto a screen and are very popular in the market. However, most projectors on the market lack an off-axis function, resulting in the center of the projected image being at the same height as the projector itself. This often results in the lower half of the image being obscured by the desktop or other items on it, thus affecting the user experience.

[0003] To address this issue, users need to prepare an unobstructed environment or install a stand, which increases time and cost. To prevent the lower half of the image from being blocked, the projection lens assembly can be adjusted in elevation, but this will cause the projected image to change from a rectangular shape to a trapezoidal shape, affecting the projection effect.

[0004] Therefore, there is an urgent need for a projector optical machine and a projector to solve the above technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a projector optical machine and a projector, which can automatically adjust the rotation angle of the front Fresnel mirror so that the projected image remains rectangular, ensuring the projection effect, and has a simple, reliable and low-cost structure. In addition, no connecting structure is required to connect the adjustment mechanism to the front Fresnel mirror, which facilitates the disassembly and replacement of the front Fresnel mirror.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] In one aspect, a projector optical engine is provided, comprising:

[0008] A housing, wherein the housing is provided with a through hole;

[0009] A light source, for emitting light;

[0010] a display assembly disposed downstream of the light source;

[0011] a front Fresnel mirror rotatably disposed in the housing and located downstream of the display assembly; the front Fresnel mirror passes through the through hole and extends outside the housing;

[0012] a projection lens assembly, arranged on the housing in an angle-adjustable manner and located downstream of the front Fresnel mirror;

[0013] An adjustment mechanism is arranged outside the housing, and the adjustment mechanism includes a drive assembly and a toggle member. The toggle member is provided with an abutment hole, and the front Fresnel mirror extends into the abutment hole. The drive assembly is used to drive the toggle member to move so that the hole wall of the abutment hole abuts the front Fresnel mirror, thereby driving the front Fresnel mirror to rotate.

[0014] In some possible implementations, a protruding portion is provided in the middle of one end of the front Fresnel mirror, and the protruding portion passes through the through hole and extends to the outside of the housing and into the abutting hole.

[0015] In some possible implementations, the toggle member is slidably disposed on the housing along a tangential direction of the rotation direction of the front Fresnel mirror, and the driving assembly is used to drive the toggle member to slide relative to the housing.

[0016] In some possible embodiments, the driving assembly includes a first rotating member, a transmission assembly and a driving member, the first rotating member is rotatably arranged on the housing and is arranged parallel to the toggle member, the first end of the first rotating member is movably connected to the toggle member, the second end of the first rotating member is movably connected to the transmission assembly, the driving member is transmission-connected to the transmission assembly, and the transmission assembly is used to drive the first rotating member to rotate.

[0017] In some possible implementations, the first end of the first rotating member is provided with a first plug-in portion, the toggle member is provided with a first avoidance hole, and the first plug-in portion is inserted into the first avoidance hole and can abut against the hole wall of the first avoidance hole.

[0018] In some possible implementations, the toggle member and the first rotating member are both located outside the top wall of the housing, and the transmission assembly and the driving member are both located outside the side wall of the housing.

[0019] In some possible embodiments, the transmission assembly includes a first gear, a second gear, and a second rotating member, the driving member is used to drive the first gear to rotate, the second gear is engaged with the first gear, the first end of the second rotating member is rotatably connected to the second gear, and the rotation center line of the first end of the second rotating member is arranged parallel to the rotation center line of the second gear, and the second end of the second rotating member is movably connected to the second end of the first rotating member.

[0020] In some possible embodiments, a support base is fixed outside the housing, the second gear is rotatably arranged on the support base, the second gear is provided with two limit sensors, the support base can trigger the two limit sensors, and the two limit sensors are both communicatively connected to the driving member.

[0021] In some possible embodiments, the housing includes a housing body and a fixing bracket, the housing body has a mounting hole formed in a wall thereof, the fixing bracket passes through the mounting hole and extends into the housing body, and the fixing bracket overlaps an outer surface of the housing body, the front Fresnel mirror is rotatably mounted on the fixing bracket, and the through-hole is provided on the fixing bracket; and / or,

[0022] The projector optical engine further includes a gravity sensor, which is used to detect the elevation angle of the projection lens assembly. The gravity sensor is communicatively connected to the drive assembly and is used to feed back elevation angle information to the drive assembly.

[0023] On the other hand, a projector is provided, comprising a control component and the projector optical engine described in any of the above schemes, wherein the control component is used to output a control signal to the light source.

[0024] Beneficial effects of the present invention:

[0025] The projector optical machine provided by the present invention comprises a housing, a light source, a display assembly, a front Fresnel mirror, a projection lens assembly, and an adjustment mechanism. When adjusting the rotation angle of the front Fresnel mirror, the drive assembly drives the toggle member to move, causing the hole wall of the abutment hole to abut the front Fresnel mirror, thereby driving the front Fresnel mirror to rotate, and then adjusting the rotation angle of the front Fresnel mirror. Therefore, the present invention can automatically adjust the rotation angle of the front Fresnel mirror, so that the image gradient change caused by the rotation of the front Fresnel mirror is in the opposite direction to the image gradient change caused by the initial elevation angle of the projection lens assembly, so that the projected image remains rectangular, ensuring the projection effect. The rotation angle of the front Fresnel mirror is adjusted by combining the drive assembly and the toggle member, and the structure is simple, reliable, and low-cost. The front Fresnel mirror is driven to rotate by abutment through the abutment hole, and no connecting structure is required to connect the adjustment mechanism to the front Fresnel mirror, which facilitates the disassembly and replacement of the front Fresnel mirror and improves assembly efficiency. In addition, the front Fresnel mirror is passed through the through hole and extended outside the shell and into the abutment hole, and the adjustment mechanism is set outside the shell, which can avoid the adjustment mechanism from affecting the light inside the shell, further ensuring the projection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the projector optical engine provided by the present invention;

[0027] Figure 2 This is a schematic structural diagram of the projector optical engine provided by the present invention (showing two operating positions of the toggle member and the first rotating member) from a first viewing angle;

[0028] Figure 3 This is a schematic structural diagram of the projector optical engine provided by the present invention (showing two operating positions of the toggle member and the first rotating member) from a second viewing angle;

[0029] Figure 4 It is a structural schematic diagram of the fixing frame, front Fresnel mirror, liquid crystal display screen and toggle member involved in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the fixing frame, the front Fresnel mirror and the liquid crystal display screen involved in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the first rotating member involved in the present invention.

[0032] Figure 7 It is a partial exploded view of the second rotating member, the second gear and the limit sensor involved in the present invention;

[0033] Figure 8 3. This is a schematic structural diagram of the projector optical engine provided by the present invention (showing two operating positions of the toggle member and the first rotating member) from a third viewing angle;

[0034] Figure 9 It is a structural schematic diagram of the housing body involved in the present invention;

[0035] In the picture:

[0036] 1. Housing; 11. Through hole; 12. Mounting port; 13. Sliding portion; 14. Housing body; 141. Mounting hole; 15. Fixing bracket; 2. Front Fresnel mirror; 21. Extension portion; 211. Connecting portion; 212. Abutting portion; 3. Adjusting mechanism; 31. Toggle member; 311. Abutting hole; 312. Sliding hole; 313. First avoidance hole; 32. First rotating member; 321. First plug-in portion; 322. Second plug-in portion; 33. Transmission assembly; 331. First gear; 332. Second gear; 3321. Rotating hole; 333. Second rotating member; 3331. Second avoidance hole; 3332. Strip column; 4. Support base; 5. Limit sensor; 6. LCD display. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0041] like Figures 1 to 9 As shown, the present invention provides a projector optical machine, including a housing 1, a light source, a display assembly, a front Fresnel mirror 2, a projection lens assembly and an adjustment mechanism 3. The housing 1 is provided with a through hole 11, specifically, the through hole 11 is provided on a fixing frame 15; the light source is used to emit light; the display assembly is provided downstream of the light source; the front Fresnel mirror 2 is rotatably provided in the housing 1 and is located downstream of the display assembly; the front Fresnel mirror 2 passes through the through hole 11 and extends outside the housing 1; the projection lens assembly is provided in the housing 1 with an adjustable angle and is located downstream of the front Fresnel mirror 2; specifically, as shown Figure 3As shown, the housing 1 is provided with a mounting opening 12, and the projection lens assembly is mounted at this opening 12 so as to adjust its angle. An adjustment mechanism 3 is disposed outside the housing 1 and includes a drive assembly and a toggle 31. The toggle 31 has an abutment hole 311, into which the front Fresnel mirror 2 extends. The drive assembly is used to drive the toggle 31 to move, causing the wall of the abutment hole 311 to abut against the front Fresnel mirror 2, thereby driving the front Fresnel mirror 2 to rotate. During projection, light emitted by the light source is incident on the display assembly, which then emits image light that is incident on the front Fresnel mirror 2. The front Fresnel mirror 2 then emits converged image light, which the projection lens assembly then projects onto the projection screen, forming a displayed image.

[0042] When adjusting the rotation angle of the front Fresnel mirror 2, the drive assembly drives the toggle member 31 to move, causing the hole wall of the abutment hole 311 to abut the front Fresnel mirror 2, thereby driving the front Fresnel mirror 2 to rotate, thereby adjusting the rotation angle of the front Fresnel mirror 2. Therefore, the present invention can automatically adjust the rotation angle of the front Fresnel mirror 2, so that the image gradient change caused by the rotation of the front Fresnel mirror 2 is opposite to the image gradient change caused by the initial elevation angle of the projection lens assembly, so that the projected image remains rectangular, ensuring the projection effect. By combining the drive assembly and the toggle member 31, the rotation angle of the front Fresnel mirror 2 is adjusted, and the structure is simple, reliable, and low-cost. The front Fresnel mirror 2 is driven to rotate by abutting the abutment hole 311, and no connecting structure is required to connect the adjustment mechanism 3 to the front Fresnel mirror 2, which facilitates the disassembly and replacement of the front Fresnel mirror 2 and improves assembly efficiency. In addition, the front Fresnel mirror 2 is passed through the through hole 11 and extended outside the housing 1 and into the abutment hole 311, and the adjustment mechanism 3 is set outside the housing 1, which can avoid the adjustment mechanism 3 from affecting the light inside the housing 1, further ensuring the projection effect.

[0043] Optionally, in this embodiment, if Figure 4 and Figure 5 As shown, a protrusion 21 is provided in the middle of one end of the front Fresnel mirror 2. The protrusion 21 passes through the through-hole 11, extends outside the housing 1, and then extends into the abutment hole 311. This arrangement helps save space occupied by the toggle member 31 and reduces processing costs. Optionally, the cross-sectional area of ​​the protrusion 21 gradually decreases from the inside out. Specifically, the protrusion 21 includes a connecting portion 211 and an abutment portion 212, which are connected sequentially from the inside out. The connecting portion 211 has a trapezoidal vertical cross-section, and the abutment portion 212 has a rectangular parallelepiped structure. The connecting portion 211 is located within the through-hole 11, and the abutment portion 212 extends into the abutment hole 311. This arrangement improves the connection strength between the protrusion 21 and the front Fresnel mirror 2. In other embodiments, one end of the front Fresnel mirror 2 can be completely passed through the through hole 11 and extended outside the housing 1, and then extended into the abutment hole 311, so that the abutment hole 311 can abut the front Fresnel mirror 2 and drive the front Fresnel mirror 2 to rotate.

[0044] Optionally, the toggle member 31 is slidably arranged on the housing 1 along the tangential direction of the rotation direction of the front Fresnel mirror 2, and the driving assembly is used to drive the toggle member 31 to slide relative to the housing 1. Figure 1 The longitudinal direction of the housing 1 is defined by the foreground. This arrangement simplifies the motion trajectory of the toggle member 31, making it easier to actuate the toggle member 31. Of course, the motion trajectory of the toggle member 31 can also be other trajectories, as long as they can achieve counterclockwise and clockwise rotation of the front Fresnel mirror 2. Optionally, in this embodiment, the toggle member 31 is provided with a sliding hole 312 extending tangentially to the rotation direction of the front Fresnel mirror 2. The housing 1 is provided with a sliding portion 13 that is slidably connected to the sliding hole 312. This arrangement ensures smooth sliding of the toggle member 31.

[0045] Optionally, the drive assembly includes a first rotating member 32, a transmission assembly 33, and a driving member. The first rotating member 32 is rotatably disposed on the housing 1 and is arranged parallel to the toggle member 31. The first end of the first rotating member 32 is movably connected to the toggle member 31, and the second end of the first rotating member 32 is movably connected to the transmission assembly 33. The driving member is in transmission connection with the transmission assembly 33, and the transmission assembly 33 is used to drive the first rotating member 32 to rotate. Arranging the first rotating member 32 parallel to the toggle member 31 and driving the toggle member 31 to slide via the first rotating member 32 can save space and has a relatively simple structure.

[0046] Alternatively, as Figure 1 、 Figure 4 and Figure 6 As shown, the first end of the first rotating member 32 is provided with a first plug-in portion 321, and the toggle member 31 is provided with a first avoidance hole 313. The first plug-in portion 321 is inserted into the first avoidance hole 313 and can abut against the hole wall of the first avoidance hole 313. Inserting the first plug-in portion 321 into the first avoidance hole 313 facilitates the installation of the first rotating member 32 on the toggle member 31. By providing the first avoidance hole 313, interference between the toggle member 31 and the first rotating member 32 during operation is avoided. Optionally, in this embodiment, the first plug-in portion 321 is a cylindrical structure, and the first avoidance hole 313 is a waist-shaped hole. Such a configuration has a simple structure and is convenient for processing.

[0047] Optionally, the toggle member 31 and the first rotating member 32 are both located outside the top wall of the housing 1, while the transmission assembly 33 and the driving member are both located outside the side walls of the housing 1. This arrangement allows the adjustment mechanism 3 to extend along the outer wall of the housing 1, saving space occupied by the projector's optical system and facilitating installation of the adjustment mechanism 3. In other embodiments, the toggle member 31 and the first rotating member 32 can be located below the bottom wall of the housing 1, while the transmission assembly 33 and the driving member are both located outside the side walls of the housing 1.

[0048] Optionally, the transmission assembly 33 includes a first gear 331, a second gear 332, and a second rotating member 333. A driving member is used to rotate the first gear 331. The second gear 332 meshes with the first gear 331. The first end of the second rotating member 333 is rotatably connected to the second gear 332, with the rotational centerline of the first end of the second rotating member 333 being parallel to the rotational centerline of the second gear 332. The second end of the second rotating member 333 is movably connected to the second end of the first rotating member 32. This arrangement ensures transmission accuracy and the accuracy of the rotation angle of the front Fresnel mirror 2. Furthermore, the toggle member 31, the first rotating member 32, and the second rotating member 333 are all connecting rods, simplifying the overall structure, saving costs, and reducing manufacturing difficulty. Illustratively, during operation, the driving member drives the first gear 331 to rotate clockwise, thereby driving the second gear 332 to rotate counterclockwise, thereby driving the second rotating member 333 to rotate clockwise, and driving the first rotating member 32 to rotate counterclockwise, so as to realize the sliding of the toggle member 31 to the left and the counterclockwise rotation of the front Fresnel mirror 2.

[0049] Alternatively, as Figure 1 、 Figure 6 and Figure 7 As shown, the second end of the first rotating member 32 is provided with a second plug-in portion 322, and the second end of the second rotating member 333 is provided with a second avoidance hole 3331. The second plug-in portion 322 is inserted into the second avoidance hole 3331 and can abut against the hole wall of the second avoidance hole 3331. Inserting the second plug-in portion 322 into the second avoidance hole 3331 facilitates the installation of the second rotating member 333 on the first rotating member 32. By providing the second avoidance hole 3331, interference between the first rotating member 32 and the second rotating member 333 is avoided during operation. Optionally, in this embodiment, the second plug-in portion 322 is a cylindrical structure, and the second avoidance hole 3331 is a waist-shaped hole. Such a configuration has a simple structure and is convenient for processing.

[0050] Alternatively, as Figure 7 As shown, two strip-shaped columns 3332 are spaced apart on one side of the first end of the second rotating member 333 near the second gear 332. The second gear 332 is provided with a rotation hole 3321. Both strip-shaped columns 3332 extend into the rotation hole 3321. When both strip-shaped columns 3332 extend into the rotation hole 3321, the second rotating member 333 can rotate relative to the rotation hole 3321 via the two strip-shaped columns 3332. The strip-shaped columns 3332 extend out of the rotation hole 3321 and can engage with the second gear 332. With this arrangement, by pressing the two strip-shaped columns 3332 toward each other and inserting them into the rotation hole 3321, the second rotating member 333 is easily installed and the axial position of the second rotating member 333 relative to the second gear 332 is ensured.

[0051] Alternatively, as Figure 8As shown, a support base 4 is fixed to the exterior of the housing 1, and a second gear 332 is rotatably mounted on the support base 4. The second gear 332 is equipped with two limit sensors 5, which can be triggered by the support base 4. Both limit sensors 5 are communicatively connected to the driver. When the support base 4 triggers the limit sensors 5, the limit sensors 5 transmit a signal to the driver, causing the driver to stop, thereby limiting the rotation range of the front Fresnel mirror 2. Specifically, the rotation range of the front Fresnel mirror 2 can be limited to ±15° based on actual conditions. The position of the two limit sensors 5 on the second gear 332 can then be calculated based on the trajectory of the toggle member 31 and the transmission assembly 33. Specifically, the limit sensors 5 are contact sensors.

[0052] Alternatively, as Figure 3 、 Figure 5 and Figure 9 As shown, the shell 1 includes a shell body 14 and a fixing frame 15. The shell wall of the shell body 14 is provided with a mounting hole 141. The fixing frame 15 passes through the mounting hole 141 and extends into the shell body 14, and the fixing frame 15 is overlapped on the outer surface of the shell body 14. The front Fresnel mirror 2 is rotatably set on the fixing frame 15, and the through hole 11 is set on the fixing frame 15. During installation, the front Fresnel mirror 2 is first installed on the fixing frame 15, and then the fixing frame 15 is passed through the mounting hole 141 and extends into the shell body 14, and then the fixing frame 15 is overlapped on the outer surface of the shell body 14. This arrangement makes disassembly and assembly convenient, improves disassembly and assembly efficiency, and at the same time, the shell body 14 and the fixing frame 15 can be processed separately, reducing processing difficulty. In addition, as Figure 4 As shown, the display assembly includes a liquid crystal display screen 6 , which is fixed to a fixing frame 15 .

[0053] Optionally, the projector optical engine also includes a gravity sensor, which is used to detect the elevation angle of the projection lens assembly. The gravity sensor is communicatively connected to the drive assembly and is used to feed back the elevation angle information to the drive assembly. Specifically, in this embodiment, the gravity sensor is used to feed back the elevation angle information to the drive element, and the drive element is a stepper motor. The gravity sensor detects the elevation angle of the projection lens assembly in real time and outputs the elevation angle feedback information to the stepper motor. A mapping relationship table is established between the angular offset of the projection lens assembly and the number of steps of the stepper motor. The stepper motor then drives the toggle member 31 and the transmission assembly 33 to operate to adjust the rotation angle of the front Fresnel mirror 2. This arrangement can quickly change the projected image from a trapezoid to a rectangle, ensuring the shape accuracy of the rectangle and further ensuring the projection effect.

[0054] The present invention also provides a projector, comprising a control assembly and a projector optical engine. The control assembly is configured to output a control signal to a light source. The projector automatically adjusts the rotation angle of a front Fresnel mirror 2 to maintain a rectangular projected image, ensuring a good projection effect. The projector has a simple, reliable, and low-cost structure. Furthermore, no connecting structure is required to connect the adjustment mechanism 3 to the front Fresnel mirror 2, making it easy to disassemble and replace the front Fresnel mirror 2.

[0055] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A projector optical engine, characterized in that: include: A housing (1), wherein the housing (1) is provided with a through hole (11); A light source, for emitting light; a display assembly disposed downstream of the light source; A front Fresnel mirror (2) is rotatably disposed in the housing (1) and is located downstream of the display assembly; the front Fresnel mirror (2) passes through the through hole (11) and extends outside the housing (1); A projection lens assembly is arranged on the housing (1) in an angle-adjustable manner and is located downstream of the front Fresnel mirror (2); An adjusting mechanism (3) is arranged outside the housing (1), and the adjusting mechanism (3) comprises a driving assembly and a toggle member (31). The toggle member (31) is provided with an abutting hole (311), and the front Fresnel mirror (2) extends into the abutting hole (311). The driving assembly is used to drive the toggle member (31) to move, so that the hole wall of the abutting hole (311) abuts against the front Fresnel mirror (2), thereby driving the front Fresnel mirror (2) to rotate.

2. The projector optical engine according to claim 1, wherein: A protruding portion (21) is provided in the middle of one end of the front Fresnel mirror (2), and the protruding portion (21) passes through the penetration hole (11) and extends to the outside of the housing (1), and extends into the abutment hole (311).

3. The projector optical engine according to claim 1, wherein: The toggle member (31) is slidably arranged on the housing (1) along a tangential direction of the rotation direction of the front Fresnel mirror (2), and the driving assembly is used to drive the toggle member (31) to slide relative to the housing (1).

4. The projector optical engine according to claim 3, wherein: The driving assembly comprises a first rotating member (32), a transmission assembly (33) and a driving member, wherein the first rotating member (32) is rotatably arranged on the housing (1) and is arranged parallel to the toggle member (31), a first end of the first rotating member (32) is movably connected to the toggle member (31), and a second end of the first rotating member (32) is movably connected to the transmission assembly (33), the driving member is in transmission connection with the transmission assembly (33), and the transmission assembly (33) is used to drive the first rotating member (32) to rotate.

5. The projector optical engine according to claim 4, wherein: The first end of the first rotating member (32) is provided with a first plug-in portion (321), the toggle member (31) is provided with a first avoidance hole (313), the first plug-in portion (321) is inserted into the first avoidance hole (313), and can abut against the hole wall of the first avoidance hole (313).

6. The projector optical engine according to claim 4, characterized in that: The toggle member (31) and the first rotating member (32) are both located outside the top wall of the housing (1), and the transmission assembly (33) and the driving member are both located outside the side wall of the housing (1).

7. The projector optical engine according to claim 6, wherein: The transmission assembly (33) includes a first gear (331), a second gear (332) and a second rotating member (333), the driving member is used to drive the first gear (331) to rotate, the second gear (332) is engaged with the first gear (331), the first end of the second rotating member (333) is rotatably connected to the second gear (332), and the rotation center line of the first end of the second rotating member (333) is arranged parallel to the rotation center line of the second gear (332), and the second end of the second rotating member (333) is movably connected to the second end of the first rotating member (32).

8. The projector optical engine according to claim 7, wherein: A support base (4) is fixed outside the housing (1); the second gear (332) is rotatably arranged on the support base (4); the second gear (332) is provided with two limit sensors (5); the support base (4) can trigger the two limit sensors (5); and both limit sensors (5) are communicatively connected to the driving member.

9. The projector optical engine according to claim 1, wherein: The housing (1) comprises a housing body (14) and a fixing frame (15); a housing wall of the housing body (14) is provided with a mounting hole (141); the fixing frame (15) passes through the mounting hole (141) and extends into the housing body (14); and the fixing frame (15) is overlapped with the outer surface of the housing body (14); the front Fresnel mirror (2) is rotatably arranged on the fixing frame (15); and the through hole (11) is arranged on the fixing frame (15); and / or, The projector optical engine further includes a gravity sensor, which is used to detect the elevation angle of the projection lens assembly. The gravity sensor is communicatively connected to the drive assembly and is used to feed back elevation angle information to the drive assembly.

10. A projector, characterized in that: It comprises a control component and a projector optical engine as described in any one of claims 1 to 9, wherein the control component is used to output a control signal to the light source.

Images