JP7410229B2 - projector optical engine - Google Patents

Description

The present invention relates to projector optical engines.

When in use, a projector is designed so that the projection screen can be moved on the projection surface so that the user can adjust the projection screen to an appropriate position because the positions in which the projector can be placed are limited. The method of moving the projection screen is to move the projection lens relative to a light valve or other image source, and the light valve may be, for example, a 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 achieved by a lens shift device. FIG. 1 is a schematic side view of a conventional lens shift device and lens barrel. Referring to FIG. 1, the conventional lens shifting device 50 is one overall module, using a four-layer structure including a connecting base plate 52, a horizontal moving plate 54, a vertical moving plate 56, a fixed plate 58, etc. This moves the lens barrel 60 of the projection lens. The lens barrel is fixed on a vertically movable plate 56, and the fixed plate 58 is fixed to the base plate 52 and does not move. The user moves the horizontal moving plate 54 horizontally relative to the base plate 52 by rotating the knob 59 and moves the vertical moving plate 56 vertically relative to the base plate 52 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 traditional lens shift device achieves the function of independently adjusting the horizontal and vertical displacement of the projection lens, this four-layer structure has a complex structure, large volume, high cost, and difficult assembly. There are issues such as it is not easy.

The present invention provides a projector optical engine that can achieve the effects of simplifying parts, reducing volume, improving accuracy, and shortening assembly time.

One embodiment of the present invention provides a projector optical engine that includes 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 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 optical engine housing and the transmission member, and the transmission member is linearly movable in a first direction relative to the optical engine housing. The second connecting member connects the transmission member and the lens barrel flange, and the lens barrel flange is linearly movable relative to the transmission member in a second direction, the first direction of which is different from the second direction.

One embodiment of the present invention provides a projector optical engine that includes an engine case, a transmission member, a lens barrel, a first connection member, and a second connection member. A first sliding portion is provided on the transmission member, a lens barrel flange is provided on the lens barrel, and a second sliding portion is provided on the lens barrel flange. 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 a first direction relative 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 lens barrel flange so that the lens barrel flange is linearly movable in the second direction relative 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 part, a first coupling part, and a second coupling part are provided on the transmission member. The transmission member is connected to the engine case at the first connecting portion and the second connecting portion. The first transmission part, the first coupling part, and the second coupling part are provided on the same straight line. A lens barrel flange is provided on the lens barrel, and a second transmission portion, a third coupling portion, and a fourth coupling portion are provided on the lens barrel flange. The lens barrel flange is connected to the transmission member at the third connecting portion and the fourth connecting portion. The second transmission part, the third transmission part, and the fourth transmission part are provided on the same straight line.

Embodiments of the present invention use the engine case inherent in the projector optical engine to replace the base plate of a conventional lens shift device, and provide a lens barrel flange on the lens barrel to replace the vertical movement plate of the conventional lens shift device. Also, in embodiments of the present invention, the connecting member can be used to replace the fixing plate of a conventional lens shift device. Therefore, the projector optical engine of the embodiment of the present invention adopts a two-layer structure to replace the traditional four-layer structure, achieving 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 taken along line II in FIG. 2. FIG. 4 is a front view of the projector optical engine of FIG. 2. 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 yet another 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 invention, FIG. 3 is a schematic cross-sectional view taken along line II of FIG. 2, and FIG. 4 is a schematic perspective view of a projector optical engine of FIG. FIG. 3 is a front view of the optical engine. Referring to FIGS. 2, 3, and 4, the projector optical engine 100 of this embodiment includes an optical engine housing 110 (i.e., engine case), a transmission member 200, a lens barrel 300, and at least a first connection member 400. (FIG. 4 takes three first connection members 400 as an example) and at least a second connection member 500 (FIG. 4 takes three second connection members 500 as an example). The transmission member 200 is provided with a first transmission part 120 , the lens barrel 300 is provided with a lens barrel flange 310 , and one second transmission part 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 in the first direction D1 with respect to the optical engine housing 110. 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 in a second direction D2 with respect to the transmission member 200. The two directions 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.

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 situations, it may also be possible to Allow some relative movement. Common connecting members include bolts, nuts, screws, rivets, pins, keys, screws, sleeves, knuckles, shoulder bolts, or combinations thereof. 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 the like. Including combinations. A transmission part provided on a member refers to a part on the member used for transmitting force or motion. A sliding part provided on a member refers to a part in which a member is slidable relative to another member, and may be active or passive, depending on the arrangement of two corresponding members, e.g. If the guide slot is provided as a sliding part in the other member, the sliding part may be a protrusion that deeply enters the guide slot, or the other member may be connected to the connecting member by being connected via another movable connecting member. The sliding part may be used as a sliding part.

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

Each of the first connecting member 400 and the second connecting member 500 includes a screw, a rivet, a sleeve, a knuckle, a shoulder bolt, a bolt, a nut, a screw, a pin, a key, or a combination thereof. In FIGS. 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 thereto. The first connecting member 400 is provided at a position corresponding to the first sliding part 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. The transmission member 200 is connected. That is, the first sliding part 210 is provided in a part of the first connecting member 400 (ie, within the guide slot), and the first sliding part 210 is slidable with respect to the first connecting member 400 . The second connecting member 500 is provided at a position corresponding to the second sliding portion 312, and connects the transmission member 200 and the lens barrel flange so that the lens barrel flange 310 can move linearly in the second direction D2 relative to the transmission member 200. 310. That is, a part of the second connecting member 500 is provided in the second sliding part 312 (ie, in the guide slot), and the second sliding part 312 is slidable with respect to the second connecting member 500.

In this embodiment, the projector optical engine 100 further includes one first transmission mechanism 140, and on one member of the first transmission mechanism 140, a first transmission part 142 is provided that contacts the first transmission part 120. . The first transmission mechanism 140 may include gears, racks, screws, worms, or combinations thereof. In the embodiment of FIG. 2, the 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 one enlarged hole 122, and one end of the transmission member 200 may have one protruding pillar 220, and the protruding pillar 220 is located within the enlarged hole 122 and has an enlarged hole. 122 restrictions may apply. Therefore, when the first transmission part 120 rotates, force is applied to the protruding pillar 220 by the hole wall of the enlarged hole 122, causing the transmission member 200 to move toward the optical engine housing 110 along the first direction D1. It can be moved. In another embodiment, one end of the first transmission part 120 may have a protruding 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 one second transmission mechanism 150, and on one member of the second transmission mechanism 150, a second transmission part 152 is provided, which contacts the second transmission part 130. . The second transmission mechanism 150 may include gears, racks, screws, worms, or combinations thereof. In the embodiment of FIG. 2, the second transmission mechanism 150 is a screw. The teeth on this screw can mesh with the teeth on the inner wall of the through hole 132 of the second transmission part 130, so that when the screw rotates, the second transmission part 130 can be moved along the second direction D2. can. One end of the second transmission part 130 may have one opening 134 , and one end of the transmission member 200 may have one protruding pillar 230 , the protruding pillar 230 being located within the opening 134 and forming the inner wall of the opening 134 . May be subject to restrictions. Therefore, when the second transmission part 130 moves along the second direction D2, force is applied to the protruding pillar 230 by the inner wall of the opening 134, and the lens barrel flange 310 is moved along with the lens barrel 300 to the transmission member 200 and the optical It can be moved along the second direction D2 relative to the engine housing 110. In another embodiment, one end of the second transmission part 130 may have a protruding pillar, and one end of the transmission member 200 may have a corresponding opening.

In this manner, in this embodiment, the operation of the first transmission mechanism 140 and the second transmission mechanism 150 causes the lens barrel 300 to move in two directions, the first direction D1 and the second direction D2, with respect to the optical engine housing 110. dimension, and the movement in these two dimensions is independently adjustable. A projection lens may be provided in 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 of the third direction D3, which is connected to the optical engine housing 110. It may be fixed on top. Among them, the 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 the lens barrel 300 moves in two dimensions relative to the optical engine housing 110, the lens barrel 300 moves in two dimensions relative to the light valve 160 or other image source (i.e., in the first direction D1 and in the first direction D1). 2 (on 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.

This embodiment replaces the base plate of the conventional lens shift device by using the optical engine housing 110 originally included in the projector optical engine 100, and provides a lens barrel flange 310 on the lens barrel 300 to move the conventional lens shift device vertically. Replace plate. Furthermore, in this embodiment, the first connecting member 400 and the second connecting member 500 can be used to replace the fixing plate of the conventional lens shift device. Therefore, the projector optical engine 100 according to 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. do.

In this embodiment, as shown in FIG. 3, 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. , the polymer sleeve 178 is located within the first slide portion 210 (eg, a guide slot), the guide slot being adapted to slide relative to the polymer sleeve 178 . Although the material of the polymer washer 176 and the polymer sleeve 178 can be, for example, polyoxymethylene (POM), Teflon, or other suitable polymer materials, to effectively reduce the frictional force during sliding, 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 with a certain appropriate clamping force to the transmission member. 200 can be held in the attached member part of the first sliding part 210, so that it has a suitable fixing effect when the transmission member 200 is not moving. Similarly, the second connecting member 500 is also a combination of the spring 172, the metal washer 174, the polymer washer 176, and the polymer sleeve 178 as described above, and passes through the second sliding portion 312 of the lens barrel flange 310. The operation and effect thereof are as described above, and will not be described repeatedly here.

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

More specifically, the protruding pillar 220, the first coupling part 210a, and the second coupling part 210b are all located on the same straight line L1, and the protruding pillar 230, the third coupling part 312a, and the fourth coupling part 312b are located on the same straight line L1. are both located on the same straight line L2, that is, the force point and the guide slot are located on the same straight line, and in this way, excessive torque is generated, causing inappropriate rotation of the lens barrel 300. This can be avoided. Moreover, the three first sliding parts 210 and the three second sliding parts 312 each form a double inline slot to serve as a linear movement guide, making it easy to control dimensional tolerances.

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 this embodiment (see FIG. 5) is similar to the projector optical engine 100 of FIG. 2, and the difference between the two is that the projector optical engine 100c of this embodiment further includes manual adjustment knobs 182 and 184 connected to the first transmission mechanism 140 (eg, a worm) and the second transmission mechanism 150 (eg, a screw), respectively. When the user rotates the manual adjustment knobs 182 and 184, the worm and screw are rotated to move the lens barrel 300 two-dimensionally in the first direction D1 and the second direction D2 relative to the optical engine housing 110. You can adjust the position of the video screen to achieve the effect.

In this embodiment, the manual adjustment knobs 182 and 184 may have an anti-lock structure, and the manual adjustment knobs 182 and 184 may be continuously rotated even though the first sliding part 210 and the second sliding part 312 have slid to the end point. When the manual adjustment knobs 182 and 184 idle 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 become stuck and difficult to move in the other direction. Make sure that this does not happen.

FIG. 6 is a schematic perspective view of a projector optical engine according to yet another embodiment of the invention. Referring to FIGS. 2 and 6, the projector optical engine 100d (see FIG. 6) of the present embodiment is similar to the projector optical engine 100 of FIG. 2, and the differences therebetween are as described below. The projector optical engine 100d of the present embodiment further includes a driving gear 192 that is in contact with the first transmission mechanism 140 and can provide power to drive the first transmission mechanism 140 and move the transmission member 200. For example, the driving gear 192 may rotate the first transmission mechanism 140 by moving the gear 193 connected to the first transmission mechanism 140 through rotation. The projector optical engine 100d of the present embodiment further includes a drive gear 194 that is in contact with the second transmission mechanism 150 and can provide power to drive the second transmission mechanism 150 and move the lens barrel flange 310. For example, the driving gear 194 may rotate the second transmission mechanism 150 by moving the gear 195 connected to the second transmission mechanism 150 through rotation.

In this embodiment, the projector optical engine 100d contacts the first transmission mechanism 140 (for example, contacts the first transmission mechanism 140 via the drive gear 192 and the gear 193) and drives the first transmission mechanism 140. The power source 610 further includes a power source 610 capable of providing power to move the transmission member 200. Further, in the present embodiment, the projector optical engine 100d contacts the second transmission mechanism 150 (for example, contacts the second transmission mechanism 150 via the drive gear 194 and the gear 195), and transmits the second transmission mechanism 150. It further includes a power source 620 that can be driven to provide power to move the lens barrel flange 310. In this embodiment, power sources 610 and 620 are, for example, motors. In this way, the effect of electrically controlling the lens barrel 300 to move relative to the optical engine housing 110 in two-dimensional directions can be achieved. The wheel-like structure (for example, drive gears 192, 194 or gears 193, 195, etc.) in this embodiment may also have an anti-lock structure as described above.

FIG. 7 is a schematic perspective view of a projector optical engine according to yet another 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, and the differences between the two are 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. Further, the first transmission mechanism 140e is, for example, a gear set, and meshes with the first transmission part 120e to move the first transmission part 120e. Further, 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, and meshes with the thread of the second transmission mechanism 150 (ie, a screw). The other end of the second transmission part 130a is connected to the lens barrel flange 310. Additionally, the projector optical engine 100e may further include a gear set 150e, and the teeth of the gear set 150e may mesh with teeth on one end of the second transmission mechanism 150 (ie, the screw). In this way, the 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, and the differences between the two are as described below. In this embodiment, the first transmission part 120f may 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, and the transmission member 200 can be moved along the first direction D1.

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

To summarize the above, embodiments of the present invention use the engine case inherent in the projector optical engine to replace the base plate of the conventional lens shift device, and provide a lens barrel flange on the lens barrel to vertically shift the conventional lens shift device. Replaces the moving plate. Also, in embodiments of the present invention, the connecting member can be used to replace the fixing plate of a conventional lens shift device. Therefore, the projector optical engine of the embodiment of the present invention adopts a two-layer structure to replace the traditional four-layer structure, achieving 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, optical display systems, etc.

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 part 210a: First coupling part 210b: Second coupling part 220, 230: Projecting pillar 300: Lens barrel 310: Lens barrel flange 312: Second sliding part 312a: Third coupling part 312b: Fourth Connection 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 lens barrel and
A first transmission part, a first coupling part, and a second coupling part are provided on the transmission member, and the transmission member is connected to the engine case at the positions of the first coupling part and the second coupling part. connected, and the first transmission part, the first coupling part, and the second coupling part are provided on the same straight line,
The lens barrel is provided with a lens barrel flange, a second transmission part, a third coupling part, and a fourth coupling part are provided on the lens barrel flange, and the lens barrel flange is connected to the third coupling part. and connected to the transmission member at the position of the fourth coupling part, and the second transmission part, the third coupling part, and the fourth coupling part are provided on the same straight line.
Projector optical engine. an optical engine housing;
a transmission member provided with a first transmission part;
a lens barrel provided with a lens barrel flange, and a second transmission part provided on the lens barrel flange;
a first connecting member connecting the optical engine housing and the transmission member, the transmission member being movable linearly in a first direction with respect to the optical engine housing;
a second connecting member that connects the transmission member and the lens barrel flange, and the lens barrel flange is linearly movable relative to the transmission member in a second direction different from the first direction. ,
Projector optical engine. further comprising a first transmission mechanism;
a first actuating part is provided on one member of the first transmission mechanism and is in contact with the first transmission part;
A projector optical engine according to claim 1 or 2. the first transmission mechanism includes a gear, a rack, a screw, a worm, or a combination thereof;
A projector optical engine according to claim 3. further comprising a drive gear in contact with the first transmission mechanism and capable of driving the first transmission mechanism to provide power for moving the transmission member;
A projector optical engine according to claim 3. further comprising a power source that is in contact with the first transmission mechanism and is capable of providing power to drive the first transmission mechanism and move the transmission member;
A projector optical engine according to claim 3. the power source is a motor;
A projector optical engine according to claim 6. further comprising a second transmission mechanism;
a second actuating part is provided on one member of the second transmission mechanism and is in contact with the second transmission part;
A projector optical engine according to claim 1 or 2. further comprising a drive gear that is in contact with the second transmission mechanism and is capable of driving the second transmission mechanism to provide power to move the lens barrel flange.
A projector optical engine according to claim 8. further comprising a power source that is in contact with the second transmission mechanism and can provide power to drive the second transmission mechanism and move the lens barrel flange;
A projector optical engine according to claim 8. Each of the first transmission part and the second transmission part includes a stud, a rack, a partial gear, a thread, a worm, a gear, a pulley, a sprocket, a coupling, a shaft, or a combination thereof.
A projector optical engine according to claim 1 or 2. engine case and
a transmission member provided with a first sliding part;
a lens barrel provided with a lens barrel flange, and a second sliding portion provided on the lens barrel flange;
a first connecting member that is provided at a position corresponding to the first sliding portion, connects the engine case and the transmission member, and allows the engine case to move linearly in a first direction with respect to the transmission member; and,
A second slider 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 includes a screw, a rivet, a sleeve, a knuckle, a shoulder bolt, a bolt, a nut, a screw, a pin, a key, or a combination thereof;
A projector optical engine according to claim 2 or 12. each of the first connecting member and the second connecting member includes a shoulder screw;
A 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 a shape of a guide slot, a guide shaft, or a guide rail. The structure of
A 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;
A projector optical engine according to claim 15.