JP2023038159A - projector optical engine - Google Patents

Abstract

To provide a projector optical engine capable of achieving effects such as simplification of components, reduction in volume, improvement in precision, and shortening of an assembly time.SOLUTION: A projector optical engine includes an optical engine casing, a transmission member, a lens barrel, a first connection member, and a second connection member. A first transmission unit is provided in the transmission member, a lens barrel flange is provided in the lens barrel, a second transmission unit is provided in the lens barrel flange. The first connection member connects the optical engine casing to the transmission member, which is linearly movable in a first direction with respect to the optical engine casing. The second connection member connects the transmission member to the lens barrel flange, which is linearly movable in a second direction with respect to the transmission member, the first direction is different from the second direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to projector optical engines.

Projectors are designed so that the projection screen can be displaced on the projection screen so that the user can adjust the projection screen to an appropriate position because the positions where the projector can be placed are limited during use. A method of moving the projection screen is to move the projection lens relative to a light valve or other image source, and the light valves are, for example, DMD (digital micro-mirror device), LCOS (liquid-crystal-on- silicon) panel, transmissive liquid crystal panel, or other suitable spatial light modulator.

Movement of the projection lens relative to the light valve can be accomplished by a lens shifter. FIG. 1 is a schematic side view of a conventional lens shift device and lens barrel. Referring to FIG. 1, a conventional lens shifter 50 is one overall module, using a four-layer structure such as a connecting base plate 52, a horizontal movement plate 54, a vertical movement plate 56 and a fixed plate 58. to move the lens barrel 60 of the projection lens. The lens barrel is fixed on the vertical moving plate 56, and the fixed plate 58 is fixed to the base plate 52 and does not move. The user moves the horizontal movement plate 54 horizontally with respect to the base plate 52 and the vertical movement plate 56 vertically with respect to the base plate 52 by rotating the knob 59 to move the lens barrel 60 to the light bulb or image source on the base plate 52 . , can be shifted in two dimensions.

Although the conventional lens shifter achieves the function of independently adjusting the horizontal and vertical displacements of the projection lens, this four-layer structure is complicated in structure, large in volume, high in cost, and difficult to assemble. There are problems such as not being easy.

The present invention provides a projector optical engine that can achieve the effects of simplification of parts, reduction of volume, improvement of accuracy, and reduction of assembly time.

One embodiment of the present invention provides a projector optical engine including an optical engine housing, a transmission member, a lens barrel, a first connection member and a second connection member. The transmission member is provided with a first transmission portion, the barrel is provided with a barrel flange, and the barrel flange is provided with a second transmission portion. A first connecting member connects the optical engine housing and the transmission member, and the transmission member is linearly movable in a first direction with respect to the optical engine housing. A second connecting member connects the transmission member and the barrel flange, and the barrel flange is linearly movable with respect to the transmission member in a second direction, the first direction being different from the second direction.

One embodiment of the present invention provides a projector optical engine including an engine case, a transmission member, a lens barrel, a first connecting member and a second connecting member. The transmission member is provided with a first sliding portion, the barrel is provided with a barrel flange, and the barrel flange is provided with a second sliding portion. The first connecting member is provided at a position corresponding to the first sliding portion and connects the engine case and the transmission member such that the transmission member is linearly movable in the first direction with respect to the engine case. The second connecting member is provided at a position corresponding to the second sliding portion, and connects the transmission member and the barrel flange such that the barrel flange is linearly movable in the second direction with respect to the transmission member.

One embodiment of the present invention provides a projector optical engine that includes an engine case, a transmission member, and a lens barrel. A first transmission portion, a first coupling portion and a second coupling portion are provided on the transmission member. The transmission member is connected to the engine case at the positions of the first coupling portion and the second coupling portion. The first transmission portion, the first coupling portion, and the second coupling portion are provided on the same straight line. A barrel flange is provided on the barrel, and a second transmission portion, a third coupling portion and a fourth coupling portion are provided on the barrel flange. The lens barrel flange is connected to the transmission member at the positions of the third joint and the fourth joint. The second transmission portion, the third transmission portion, and the fourth transmission portion are provided on the same straight line.

Embodiments of the present invention use the inherent engine case of the projector optical engine to replace the base plate of a conventional lens shifter, and provide a barrel flange on the barrel to replace the vertical translation plate of a conventional lens shifter. Also, in embodiments of the present invention, the connecting member can be used to replace the fixed plate of a conventional lens shifter. Therefore, the projector optical engine of the embodiment of the present invention adopts a two-layer structure to replace the conventional four-layer structure, and achieves the effects of simplifying parts, reducing volume, improving precision, and shortening assembly time. .

FIG. 1 is a schematic side view of a conventional lens shift device and lens barrel. FIG. 2 is a schematic perspective view of a projector optical engine according to one embodiment of the invention. FIG. 3 is a schematic cross-sectional view along line II of FIG. 4 is a front view of the projector optical engine of FIG. 2; FIG. FIG. 5 is a schematic perspective view of a projector optical engine according to another embodiment of the invention. FIG. 6 is a schematic perspective view of a projector optical engine according to yet another embodiment of the invention. FIG. 7 is a schematic perspective view of a projector optical engine according to a further embodiment of the invention; FIG. 8 is a schematic perspective view of a projector optical engine according to another embodiment of the invention.

2 is a schematic perspective view of a projector optical engine according to one embodiment of the present invention, FIG. 3 is a schematic cross-sectional view along line II of FIG. 2, and FIG. 1 is a front view of an optical engine; FIG. 2, 3, and 4, the projector optical engine 100 of this embodiment includes an optical engine housing 110 (that is, an engine case), a transmission member 200, a lens barrel 300, and at least a first connection member 400. (three first connection members 400 are exemplified in FIG. 4) and at least second connection members 500 (three second connection members 500 are exemplified in FIG. 4). The transmission member 200 is provided with a first transmission portion 120 , the lens barrel 300 is provided with a lens barrel flange 310 , and one second transmission portion 130 is provided on the lens barrel flange 310 . The first connecting member 400 connects the optical engine housing 110 and the transmission member 200, and the transmission member 200 is linearly movable with respect to the optical engine housing 110 in the first direction D1. The second connecting member 500 connects the transmission member 200 and the lens barrel flange 310, and the lens barrel flange 310 is linearly movable with respect to the transmission member 200 in the second direction D2. 2 direction D2 is different. In this embodiment, the first direction D1 is, for example, perpendicular to the second direction D2, but the invention is not so limited.

Among them, the so-called connecting member refers to the temporary or permanent connection of two or more members, and the connection does not mean that the two members cannot move relative to each other, and in certain circumstances, Allow some relative motion. Common connecting members include bolts, nuts, screws, rivets, pins, keys, screws, sleeves, knuckles, shoulder bolts, or combinations thereof. A transmission member refers to a member used to transmit force or motion, and common transmission members include gears, pulleys, sprockets, couplings, shafts, studs, racks, partial gears, threads, worms, or their Including combinations. A transmission provided on a member refers to the part used to transmit force or motion on the member. A slide provided on a member refers to the part where the member is slidable relative to another member, and may be active or passive, depending on the arrangement of the two corresponding members, e.g. is provided with a guide slot as a sliding part, the other member may have a protrusion that goes deep into the guide slot as a sliding part, or it can be connected to the connecting member by connecting through another movable connecting member. The sliding portion may be used as the sliding portion.

In this embodiment, the transmission member 200 may be, for example, one adjustment piece, ie one plate, that moves relative to the optical engine housing 110 along the first direction D1. Each of the first transmission section 120 and the second transmission section 130 includes a stud, rack, partial gear, thread, worm, gear, pulley, sprocket, coupling, shaft, or combination thereof. In the embodiment of FIG. 2, the first transmission part 120 can be, for example, a partial gear or a worm wheel, and the second transmission part 130 can have a thread on the inner wall of one through hole 132, but the present invention is not limited to One first sliding portion 210 is provided on the transmission member 200, one second sliding portion 312 is provided on the barrel flange 310, and each of the first sliding portion 210 and the second sliding portion 312 is , for example, the lens barrel flange 310 or a guide used to guide the direction of the transmission member 200, and the guide is, for example, a guide slot, a guide rod, or a guide rail-shaped structure. 2 and 4, the first slide 210 and the second slide 312 are, for example, guide slots.

Each of the first connecting member 400 and the second connecting member 500 includes screws, rivets, sleeves, knuckles, shoulder bolts, bolts, nuts, screws, pins, keys, or combinations thereof. 2 to 4, the first connecting member 400 and the second connecting member 500 are both shoulder screws, for example, but the present invention is not limited to this. The first connecting member 400 is provided at a position corresponding to the first sliding portion 210, and is connected to the optical engine housing 110 so that the transmission member 200 can move linearly in the first direction D1 with respect to the optical engine housing 110. It connects with the transmission member 200 . That is, a portion of the first connecting member 400 is provided with the first sliding portion 210 (ie, within the guide slot), and the first sliding portion 210 is slidable relative to the first connecting member 400 . The second connecting member 500 is provided at a position corresponding to the second sliding portion 312, and the transmission member 200 and the lens barrel flange are connected so that the lens barrel flange 310 can linearly move relative to the transmission member 200 in the second direction D2. 310. That is, a portion of the second connecting member 500 is provided in the second sliding portion 312 (ie within the guide slot), and the second sliding portion 312 is slidable relative to the second connecting member 500 .

In this embodiment, the projector optical engine 100 further includes a first transmission mechanism 140, and a member of the first transmission mechanism 140 is provided with a first transmission portion 142 in contact with the first transmission portion 120. . The first transmission mechanism 140 may include gears, racks, screws, worms, or combinations thereof. In the embodiment of FIG. 2, first transmission mechanism 140 is a worm. The teeth on this worm can mesh with the teeth of the first transmission part 120 (ie the worm wheel), thus allowing the first transmission part 120 to rotate when the worm rotates. One end of the first transmission part 120 may have an enlarged hole 122 , and one end of the transmission member 200 may have a projecting pillar 220 , the projecting pillar 220 being positioned in the enlarged hole 122 to 122 limit. Therefore, when the first transmission portion 120 rotates, the hole wall of the enlarged hole 122 applies force to the projecting pillar 220, causing the transmission member 200 to move toward the optical engine housing 110 along the first direction D1. can be moved. In another embodiment, one end of the first transmission part 120 may have a projecting pillar and one end of the transmission member 200 may have a corresponding enlarged hole.

In this embodiment, the projector optical engine 100 further includes a second transmission mechanism 150, and on one member of the second transmission mechanism 150 is provided a second transmission part 152 in contact with the second transmission part 130. . The second transmission mechanism 150 may include gears, racks, screws, worms, or combinations thereof. In the embodiment of Figure 2, the second transmission mechanism 150 is a screw. The teeth on the screw can mesh with the teeth on the inner wall of the through hole 132 of the second transmission part 130, so that the second transmission part 130 can be moved along the second direction D2 when the screw rotates. can. One end of the second transmission part 130 may have an opening 134 , and one end of the transmission member 200 may have a protruding pillar 230 , the protruding pillar 230 being positioned in the opening 134 on the inner wall of the opening 134 . may be restricted. Therefore, when the second transmission portion 130 moves along the second direction D2, the inner wall of the opening 134 applies a force to the projecting pillar 230, causing the lens barrel flange 310 to move along with the lens barrel 300, the transmission member 200, and the optical system. It can be moved along the second direction D2 with respect to the engine housing 110 . In another embodiment, one end of the second transmission part 130 may have a projecting pillar and one end of the transmission member 200 may have a corresponding opening.

In this way, in this embodiment, the operation of the first transmission mechanism 140 and the second transmission mechanism 150 causes the lens barrel 300 to move toward the optical engine housing 110 in the first direction D1 and the second direction D2. It can move in two dimensions, and the movement in these two dimensions can be adjusted independently. A projection lens may be provided within the lens barrel 300, and the lens barrel 300 may be provided with a light valve 160 or other image source on one side of the opposite direction in the third direction D3, which is the optical engine housing 110. may be fixed on top. Light valve 160 is, for example, a digital micromirror element, an LCOS panel, a transmissive liquid crystal panel, or other suitable spatial light modulator. When lens barrel 300 moves in two dimensions relative to optical engine housing 110, lens barrel 300 moves in two dimensions relative to light valve 160 or other image source (i.e., first direction D1 and second direction D1). 2 direction D2) to achieve the effect of adjusting the projection screen position. In this embodiment, the optical axis of the projection lens is parallel to the third direction D3, and the first direction D1, the second direction D2 and the third direction D3 are perpendicular to each other.

In this embodiment, the optical engine housing 110 inherent in the projector optical engine 100 is used to replace the base plate of the conventional lens shift device, and a barrel flange 310 is provided on the barrel 300 to vertically move the conventional lens shift device. replace the plate. Also, in this embodiment, the first connecting member 400 and the second connecting member 500 can be used to replace the fixed plate of the conventional lens shifter. Therefore, the projector optical engine 100 of the embodiment of the present invention adopts a two-layer structure to replace the conventional four-layer structure, and achieves the effects of simplifying parts, reducing volume, improving accuracy, and shortening assembly time. do.

In this embodiment, the first connecting member 400 passes through the spring 172, the metal washer 174, the polymer washer 176, and the polymer sleeve 178 and is locked onto the optical engine housing 110, as shown in FIG. , the polymer sleeve 178 is positioned within a first slide 210 (eg, a guide slot), which is adapted to slide relative to the polymer sleeve 178 . The material of the polymer washer 176 and the polymer sleeve 178 is, for example, polyoxymethylene (POM), Teflon, or other suitable polymer material, which can effectively reduce the friction force during sliding, but the present invention It is not limited to this. In addition, the shoulder of the first connecting member 400 (shoulder screw) applies pressure to the polymer washer 176 via the spring 172 and the metal washer 174, and the bottom of the polymer sleeve 178 engages the polymer washer 176 and the transmission member with some appropriate clamping force. 200 can be clamped in the attachment part of the first sliding part 210, so that it has a proper fixing effect when the transmission member 200 is not moving. Similarly, the second connecting member 500 also includes a spring 172, a metal washer 174, a polymer washer 176, and a polymer sleeve 178, as described above, and extends through the second sliding portion 312 of the lens barrel flange 310. is locked to the transmission member 200, and its action and effect are as described above, and will not be repeated here.

As shown in FIG. 4, the transmission member 200 is provided with three first sliding parts 210, which can also be regarded as coupling parts, of which the two first sliding parts 210 are the first coupling part 210a. It can be regarded as a second coupling portion 210b. The lens barrel flange 310 is provided with three second slides 312, which can also be regarded as joints, of which the two second slides 312 are a third joint 312a and a fourth joint 312b. can be viewed. The transmission member 200 is connected to the optical engine housing 110 at the positions of the first connecting portion 210a and the second connecting portion 210b, for example, via the first connecting member 400 described above. The first transmission portion 120, the first coupling portion 210a and the second coupling portion 210b are provided on the same straight line L1. The lens barrel flange 310 is connected to the transmission member 200 at the positions of the third connecting portion 312a and the fourth connecting portion 312b, for example, via the second connecting member 500 described above. The second transmission portion 130, the third coupling portion 312a and the fourth coupling portion 312b are provided on the same straight line L2.

More specifically, the projecting pillar 220, the first coupling portion 210a, and the second coupling portion 210b are all positioned on the same straight line L1, and the projecting pillar 230, the third coupling portion 312a, and the fourth coupling portion 312b are aligned. are located on the same straight line L2, i.e., the power point and the guide slot are located on the same straight line, thus excessive torque is generated and causes improper rotation of the lens barrel 300. can be avoided. In addition, each of the three first slides 210 and the three second slides 312 forms a double in-line slot as a linear movement guide, which facilitates control of dimensional tolerance.

FIG. 5 is a schematic perspective view of a projector optical engine according to another embodiment of the invention. 2 and 5, the projector optical engine 100c of the present embodiment (see FIG. 5) is similar to the projector optical engine 100 of FIG. further includes manual adjustment knobs 182 and 184 respectively connected to the first transmission mechanism 140 (eg, worm) and the second transmission mechanism 150 (eg, screw). When the user rotates the manual adjustment knobs 182 and 184, it rotates the worm and screw to move the lens barrel 300 relative to the optical engine housing 110 in a first direction D1 and a second direction D2 in two dimensions. can be adjusted to achieve the effect of adjusting the position of the video screen.

In this embodiment, the manual adjustment knobs 182 and 184 may have an anti-lock structure, and the manual adjustment knobs 182 and 184 continue to rotate while the first slide 210 and the second slide 312 slide to the end point. When the manual adjustment knobs 182 and 184 spin relative to the first transmission mechanism 140 and the second transmission mechanism 150, the manual adjustment knobs 182 and 184 provide excessive torque causing the mechanisms to jam and make it difficult to move in the other direction. so as not to become

FIG. 6 is a schematic perspective view of a projector optical engine according to yet another embodiment of the invention. 2 and 6, projector optical engine 100d (see FIG. 6) of this embodiment is similar to projector optical engine 100 of FIG. The projector optical engine 100 d of this embodiment further includes a drive gear 192 that can contact the first transmission mechanism 140 to drive the first transmission mechanism 140 to provide power to move the transmission member 200 . By way of example, drive gear 192 may, through rotation, move gear 193 coupled to first transmission mechanism 140 to rotate first transmission mechanism 140 . The projector optical engine 100 d of this embodiment further includes a drive gear 194 that can contact the second transmission mechanism 150 to provide power to drive the second transmission mechanism 150 to move the barrel flange 310 . By way of example, drive gear 194 may, through rotation, move gear 195 coupled to second transmission mechanism 150 to rotate second transmission mechanism 150 .

In this embodiment, the projector optical engine 100d contacts the first transmission mechanism 140 (eg, contacts the first transmission mechanism 140 via the drive gear 192 and the gear 193) to drive the first transmission mechanism 140. It further includes a power source 610 capable of providing power to move the transmission member 200 by means of a power source 610 . Further, in this embodiment, the projector optical engine 100d contacts the second transmission mechanism 150 (for example, contacts the second transmission mechanism 150 via the driving gear 194 and the gear 195) to cause the second transmission mechanism 150 to Further included is a power source 620 that can be driven to provide power to move the barrel flange 310 . In this embodiment, power sources 610 and 620 are, for example, motors. In this way, it is possible to achieve the effect of electrically controlling the lens barrel 300 to move with respect to the optical engine housing 110 in two-dimensional directions. The wheel-like structures (eg, drive gears 192, 194 or gears 193, 195, etc.) in this embodiment may also have antilock structures as described above.

FIG. 7 is a schematic perspective view of a projector optical engine according to a further embodiment of the invention; Referring to FIG. 7, the projector optical engine 100e of this embodiment is similar to the projector optical engine 100 of FIG. 2, with differences between the two as described below. In this embodiment, the first transmission part 120e may be a gear and also has an enlarged hole 122 like the first transmission part 120 to accommodate the protruding pillar 220 . The first transmission mechanism 140e is, for example, a gear set, and meshes with the first transmission portion 120e to move the first transmission portion 120e. The second transmission part 130a is, for example, a connecting rod, and has a thread on the inner wall of the through hole at one end thereof, which meshes with the thread of the second transmission mechanism 150 (that is, the screw). The other end of the second transmission portion 130 a is connected to the barrel flange 310 . Also, the projector optical engine 100e may further include a gear set 150e, and the teeth of the gear set 150e may mesh with the teeth of one end of the second transmission mechanism 150 (ie, screw). In this manner, gear set 150e can rotate the screw.

FIG. 8 is a schematic perspective view of a projector optical engine according to another embodiment of the invention. Referring to FIG. 8, the projector optical engine 100f of this embodiment is similar to the projector optical engine 100 of FIG. 2, with differences between the two as described below. In this embodiment, the first transmission part 120f can be a rack and is connected to the transmission member 200 . The first transmission mechanism 140f may be a gear, the teeth of which mesh with the teeth of the rack. When the first transmission mechanism 140f rotates, the first transmission part 120f (ie, the rack) can be moved along the first direction D1 to move the transmission member 200 along the first direction D1.

Also, in this embodiment, the second transmission part 130f may be a rack and is connected to the barrel flange 310 . The second transmission mechanism 150f may be a gear, the teeth of which mesh with the teeth of the second transmission portion 130f (ie, rack). When the second transmission mechanism 150f rotates, the second transmission portion 130f (ie, the rack) can be moved along the second direction D2 to move the barrel flange 310 along the second direction D2.

To summarize the above, the embodiment of the present invention replaces the base plate of the conventional lens shifter by using the original engine case of the projector optical engine, and provides a barrel flange on the lens barrel to make the conventional lens shifter vertical. Replace the transfer plate. Also, in embodiments of the present invention, the connecting member can be used to replace the fixed plate of a conventional lens shifter. Therefore, the projector optical engine of the embodiment of the present invention adopts a two-layer structure to replace the conventional four-layer structure, and achieves the effects of simplifying parts, reducing volume, improving precision, and shortening assembly time. .

The projector optical engine of the present invention can be applied to fields such as projectors, projection displays, and optical display systems.

50: Lens shift device 52: Base plate 54: Horizontal movement plate 56: Vertical movement plate 58: Fixed plate 60: Lens barrel 100, 100c, 100d, 100e, 100f: Projector optical engine 110: Optical engine housing 120, 120e, 120f : First transmission part 122: Enlarged hole 130, 130a, 130f: Second transmission part 132: Through hole 134: Opening 140, 140e, 140f: First transmission mechanism 142: First transmission part 150, 150f: Second transmission mechanism 150e: gear set 152: second transmission part 160: light valve 172: spring 174: metal washer 176: polymer washer 178: polymer sleeve 182, 184: manual adjustment knob 192, 194: drive gear 193, 195: gear 200: transmission Member 210: First sliding portion 210a: First coupling portion 210b: Second coupling portion 220, 230: Projecting pillar 300: Lens barrel 310: Lens barrel flange 312: Second sliding portion 312a: Third coupling portion 312b: Fourth Coupling part 400: first connection member 500: second connection member 610, 620: power source D1: first direction D2: second direction D3: third direction L1, L2: straight line

Claims (16)

engine case and
a transmission member;
including a lens barrel and
A first transmission portion, a first coupling portion, and a second coupling portion are provided on the transmission member, and the transmission member is connected to the engine case at the positions of the first coupling portion and the second coupling portion. are connected, and the first transmission portion, the first coupling portion, and the second coupling portion are provided on the same straight line,
The lens barrel is provided with a lens barrel flange, and a second transmission portion, a third coupling portion and a fourth coupling portion are provided on the lens barrel flange, and the lens barrel flange is provided with the third coupling portion. and the transmission member at the position of the fourth coupling portion, and the second transmission portion, the third coupling portion, and the fourth coupling portion are provided on the same straight line,
projector optical engine. an optical engine housing;
a transmission member provided with a first transmission portion;
a lens barrel provided with a lens barrel flange, and a second transmission portion provided on the lens barrel flange;
a first connection member connecting the optical engine housing and the transmission member, the transmission member being linearly movable in a first direction with respect to the optical engine housing;
a second connection member that connects the transmission member and the lens barrel flange, and the lens barrel flange is linearly movable with respect to the transmission member in a second direction different from the first direction. ,
projector optical engine. further comprising a first transmission mechanism;
A first transmission is provided on one member of the first transmission mechanism and is in contact with the first transmission.
3. A projector optical engine according to claim 1 or 2. wherein the first transmission mechanism comprises gears, racks, screws, worms, or combinations thereof;
4. Projector optical engine according to claim 3. further comprising a drive gear in contact with the first transmission mechanism and capable of providing power to drive the first transmission mechanism to move the transmission member;
4. Projector optical engine according to claim 3. further comprising a power source in contact with the first transmission mechanism and capable of providing power to drive the first transmission mechanism to move the transmission member;
4. Projector optical engine according to claim 3. wherein the power source is a motor;
7. Projector optical engine according to claim 6. further comprising a second transmission mechanism;
A second transmission is provided on one member of the second transmission mechanism and is in contact with the second transmission.
3. A projector optical engine according to claim 1 or 2. a drive gear in contact with the second transmission mechanism and capable of providing power to drive the second transmission mechanism to move the barrel flange;
9. Projector optical engine according to claim 8. a power source in contact with the second transmission mechanism and capable of providing power to drive the second transmission mechanism to move the lens barrel flange;
9. Projector optical engine according to claim 8. each of the first transmission section and the second transmission section includes a stud, rack, partial gear, thread, worm, gear, pulley, sprocket, coupling, shaft, or combinations thereof;
3. A projector optical engine according to claim 1 or 2. engine case and
a transmission member provided with a first sliding portion;
a lens barrel provided with a lens barrel flange and a second sliding portion provided on the lens barrel flange;
A first connecting member provided at a position corresponding to the first sliding portion, connecting the engine case and the transmission member, and allowing the engine case to move linearly in a first direction with respect to the transmission member. and,
a second sliding portion provided at a position corresponding to the second sliding portion, connecting the lens barrel flange and the transmission member, and allowing the lens barrel flange to move linearly in a second direction with respect to the transmission member; including a connecting member and
projector optical engine. each of the first connecting member and the second connecting member comprises a screw, rivet, sleeve, knuckle, shoulder bolt, bolt, nut, screw, pin, key, or combinations thereof;
13. Projector optical engine according to claim 2 or 12. each of the first connecting member and the second connecting member includes a shoulder screw;
13. Projector optical engine according to claim 2 or 12. Each of the lens barrel flange and the transmission member is provided with a guide portion used to guide the direction of the lens barrel flange or the transmission member, and the guide portion has the shape of a guide slot, a guide shaft, or a guide rail. is the structure of
13. Projector optical engine according to claim 2 or 12. a portion of each of the first connecting member and the second connecting member is provided within the guide slot;
16. Projector optical engine according to claim 15.

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