TWI826750B - Optical path adjusting mechanism and manufacturing method thereof - Google Patents

Abstract

An optical path adjusting mechanism including a bearing base, a rotating base, an optical element, a coil, and an magnetic material is provided. The rotating base is disposed near the bearing base. The rotating base has a first region and a second region which are substantially located at diagonal positions. The rotating base includes a bearing element and a rotating axis. The optical element is disposed in the bearing element. The coil is disposed on the rotating base. The magnetic material is disposed on the bearing base and near the coil. The bearing element and the rotating axis are integrated in one piece, and the rotating base simply rotates along a virtual axial line. In addition, a manufacturing method of an optical path adjusting mechanism is also provided.

Description

Optical path adjustment mechanism and manufacturing method thereof

The invention relates to an optical path adjustment mechanism and a manufacturing method thereof.

With the increasing development of science and technology, many different methods of building physical three-dimensional (3-D) models using additive manufacturing technology such as layer-by-layer construction models have been proposed. Generally speaking, additive manufacturing technology converts design data from 3-D models constructed using software such as Computer-Aided Design (CAD) into continuously stacked multiple thin (quasi-two-dimensional) cross-sectional layers. . However, the surface accuracy of objects printed by the above three-dimensional printing technology still cannot meet market demand. Therefore, how to further improve the surface accuracy of printed objects has always been a problem that those skilled in the art have to solve.

The present invention provides an optical path adjustment mechanism and a manufacturing method thereof, which can enable three-dimensional printing objects printed by a three-dimensional printing device to have good surface accuracy.

Embodiments of the present invention provide an optical path adjustment mechanism, including a carrying base, a rotating base, optical elements, coils, and magnetic materials. The rotating base is located adjacent to the carrying base. The rotating base is provided with a first area and a second area at substantially diagonal positions. The rotating base includes a bearing base and a rotating shaft. The optical element is arranged on the bearing base. The coil is installed on the rotating base. The magnetic material is disposed on the carrying base and adjacent to the coil. The bearing base and the rotating shaft are integrally formed, and the rotating base only rotates along the virtual axis.

Embodiments of the present invention provide a manufacturing method of an optical path adjustment mechanism, which includes providing a bearing base; assembling a rotating base adjacent to the bearing base, and the rotating base is provided with a first region and a second region at approximately diagonal positions. The base includes a bearing base and a rotating shaft; the optical element is assembled on the bearing base; the coil is assembled on the rotating base; and the magnetic material is assembled on the bearing base and adjacent to the coil. The bearing base and the rotating shaft are integrally formed, and the rotating base only rotates along the virtual axis.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

100, 200: Optical device

110, 210: Lighting system

112, 212: light source

114, 214: Beam

114a, 214a, 500: sub-image

116, 216: color wheel

117, 217: Light collecting column

118, 218: Lens set

119: Internal total reflection

120:Digital micromirror device

130, 230: Projection lens

140, 242, 244, 246: Vibration mechanism

219:稜顡

220: Reflective light valve

240, 1000a, 1000b, 1000c, 1000d, 1000e, 1940: imaging displacement module

242a, 244a, 322, 422: Optical component department

410, 1100: Bearing base

412: Magnetic material seat

414a, 414b, M1, M2, M3, M4, M5, M6: magnetic materials

420, 1200: Rotating base

424: Bearing seat

426, 427a, 427b, C1, C2, C3, C4, C5, C6: coil module

426a: Coil seat

426b: coil

428:Rotating axis

430:Axis

432:hole

400:Screen

1110, 1120: First carrying frame

1300, 1311, 1312: elastic parts

1310, 1320: Pair of elastic parts

1400, 1410, 1420: Actuation assembly

1500: Optical components department

1610, 1620: rotating shaft

1900a, 1900b: 3D printing device

1910: Forming slot

1912:Light sensitive materials

1920:Projection device

1930:Lifting platform

1932:Print area

X, Y, XY1, XY2, Z, X’, Y’, X’Y’1, X’Y’2, X”, Y”: direction

S: reference plane

w, NW: width

t:Thickness

B:Image beam

OB: 3D printing object

Figure 1 is a schematic structural diagram of an optical device.

FIG. 2 is a schematic structural diagram of an optical device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of imaging of an optical device according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of an imaging displacement module according to an embodiment of the present invention.

FIG. 5 is a cross-sectional side view along the dotted line D-D of the embodiment of FIG. 4 of the present invention.

FIG. 6 shows a cross-sectional side view along the dotted line A-A of the embodiment of FIG. 4 of the present invention.

FIG. 7 is a schematic structural diagram of an imaging displacement module according to another embodiment of the present invention.

FIG. 8 is a cross-sectional side view along the dotted line D-D of the embodiment of FIG. 7 of the present invention.

FIG. 9 shows a cross-sectional side view along the dashed line A-A in FIG. 7 of the present invention.

FIG. 10A , FIG. 11A , and FIG. 12A are respectively schematic structural diagrams of imaging displacement modules according to different embodiments of the present invention.

Figures 10B, 11B, and 12B respectively illustrate top views of the imaging displacement module in the embodiments of Figures 10A, 11A, and 12A.

10C, 11C, and 12C respectively illustrate cross-sectional side views of the imaging displacement module according to the embodiments of FIGS. 10A, 11A, and 12A.

FIG. 13A is a schematic diagram illustrating the moving direction of the sub-image according to an embodiment of the present invention.

13B and 13C are schematic diagrams illustrating the imaging displacement results of the sub-image in the embodiment of FIG. 13A.

FIG. 14A is a schematic diagram illustrating the moving direction and imaging position of the sub-image according to another embodiment of the present invention.

FIG. 14B is a schematic comparison diagram of the imaging positions of the sub-images when the rotating base of the embodiment of FIG. 14A is rotated in different directions within a frame time.

FIG. 15 is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention.

FIG. 16A is a schematic diagram illustrating the moving direction of a sub-image according to another embodiment of the present invention.

FIG. 16B is a schematic diagram illustrating the sub-image imaging position of the embodiment in FIG. 16A.

17A and 17B are respectively schematic three-dimensional views of the imaging displacement module applied inside the projection lens according to different embodiments of the present invention.

FIG. 18A is a schematic three-dimensional structural view of an imaging displacement module according to an embodiment of the present invention.

18B and 18C are respectively a schematic structural perspective view of the first elastic member of the imaging displacement module in the embodiment of FIG. 18A and a diagram of its amplitude versus time.

FIG. 18D illustrates the relationship between the amplitude of the first elastic member and time.

19A and 19B respectively illustrate different schematic diagrams of three-dimensional printing devices using the imaging displacement module according to any of the above embodiments of the present invention.

FIG. 19C is a schematic diagram of a 3D printed object 3D printed by different 3D printing devices of FIG. 19A or 19B.

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of multiple embodiments with reference to the drawings. Directional terms mentioned in the following embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only for reference to the directions in the attached drawings. Accordingly, the directional terms used are intended to illustrate and not to limit the invention.

Figure 1 shows a schematic structural diagram of an optical device. Referring to FIG. 1 , the optical device 100 includes an illumination system 110 , a digital micromirror device 120 , a projection lens 130 and a vibration mechanism 140 . Wherein, the illumination system 110 has a light source 112, which is suitable for providing a light beam 114, and the digital micromirror device 120 is arranged on the transmission path of the light beam 114. The digital micromirror device 120 is suitable for converting the light beam 114 into a plurality of sub-images 114a. also, The projection lens 130 is arranged on the transmission path of these sub-images 114a, and the digital micromirror device 120 is located between the illumination system 110 and the projection lens 130. In addition, the vibration mechanism 140 is disposed between the digital micromirror device 120 and the projection lens 130, and is located on the transmission path of these sub-images 114a.

In the above-mentioned optical device 100, the light beam 114 provided by the light source 112 will pass through the color wheel 116, the light integration rod 117, the lens group 118 and the total internal reflection prism (TIR Prism) 119 in sequence. Afterwards, the internal total reflection lens 119 will reflect the light beam 114 to the digital micromirror device 120 . At this time, the digital micromirror device 120 will convert the light beam 114 into a plurality of sub-images 114a, and these sub-images 114a will pass through the internal total reflection lens 119 and the vibration mechanism 140 in sequence, and project these sub-images 114a through the projection lens 130 on screen 400.

When these sub-images 114a pass through the vibration mechanism 140, the vibration mechanism 140 will change part of the transmission paths of these sub-images 114a. That is to say, the sub-images 114a passing through the vibrating mechanism 140 will be projected at the first position (not shown) on the screen 400, and the sub-images 114a passing through the vibrating mechanism 140 will be projected at another part of the time. A second position (not shown) on the screen 400, where the first position and the second position differ by a fixed distance in the horizontal direction (X-axis) or the vertical direction (Z-axis). Since the vibration mechanism 140 can only move the imaging positions of these sub-images 114a by a fixed distance in the horizontal or vertical direction, it can improve the horizontal resolution or vertical resolution of the image.

FIG. 2 is a schematic structural diagram of an optical device according to an embodiment of the present invention. Please refer to Figure 2. The optical device 200 of this embodiment includes an illumination system. 210. Reflective light valve 220, projection lens 230, imaging displacement module 240 and screen 400. Wherein, the lighting system 210 has a light source 212, which is suitable for providing a light beam 214, and a reflective light valve 220 is arranged on the transmission path of the light beam 214. The reflective light valve 220 is adapted to convert the light beam 214 into a plurality of sub-images 214a. In addition, the projection lens 230 is disposed on the transmission path of these sub-images 214a, and the reflective light valve 220 is located between the illumination system 210 and the projection lens 230.

FIG. 3 is a schematic diagram of imaging of the optical device in this embodiment. When the sub-images 214a pass through the imaging displacement module 240, the imaging displacement module 240 changes the transmission paths of part of the sub-images 214a. That is to say, the sub-images 214a passing through the imaging displacement module 240 will be projected at the first position (solid line square) on the screen 400, and the sub-images 214a passing through the imaging displacement module 240 will be projected in another part of the time. The image 214a will be projected on the second position (dotted square) on the screen 400, thereby improving the horizontal resolution and vertical resolution of the image at the same time. The above-mentioned lighting system 210 is, for example, a telecentric lighting system or a non-telecentric lighting system. In addition, the reflective light valve 220 is, for example, a digital micromirror device or a single crystal silicon reflective liquid crystal panel. In this embodiment, a digital micromirror device is used as an example. The light beam 214 provided by the above-mentioned light source 212 will pass through the color wheel 216, the light collecting column 217, the lens group 218 and the lens 219 in sequence, and the lens 219 will reflect the light beam 214 to the reflective light valve 220. At this time, the reflective light valve 220 will convert the light beam 214 into a plurality of sub-images 214a, and these sub-images 214a will pass through the imaging displacement module 240 and the imaging displacement module 219 in sequence, or pass through the imaging displacement module 219 and the imaging displacement module in sequence. 240, and project these sub-images 214a on the screen 400 through the projection lens 230. It should be noted that if LEDs of different colors are used as the light source 212, the color wheel 216 can is omitted. In addition, a microlens array (lens array) may be used instead of the light collecting rod 217 for light uniformization.

4, 5, and 6 respectively illustrate a schematic structural perspective view of an imaging displacement module according to an embodiment of the present invention, a cross-sectional side view along the dashed line D-D, and a cross-sectional side view along the dashed line A-A. Please refer to Figures 4, 5, and 6. In this embodiment, the imaging displacement module 240 includes a bearing base 410 and a rotation base 420. The rotating base 420 is pivotally connected to the carrying base 410, and the carrying base 410 is suitable for controlling the rotating base 420 to vibrate back and forth within a specific angle θ (not shown). The rotating base 420 has an optical element part 422, and the optical element part 422 is located on the transmission path of the above-mentioned sub-images 214a (as shown in FIG. 2). Moreover, when the rotating base 420 vibrates back and forth within the specific angle θ, the optical element portion 422 can move the imaging positions of the sub-images 214a by a distance on an axis 430. In other words, the optical element part 422 of the imaging displacement module 240 (as shown in FIG. 4 ) can move the imaging positions of these sub-images 214a by a distance in the horizontal direction (X-axis) and the vertical direction (Z-axis) at the same time. .

In the above-mentioned imaging displacement module 240, the carrying base 410 includes, for example, a magnetic material base 412, two magnetic materials 414a, 414b, and a sensing module (not shown). The rotating base 420 includes, for example, an optical element part 422, a bearing base 424, a coil module 426, and a rotating shaft 428. The upper and lower ends of the rotating shaft 428 are pivotally connected to the base (not shown) through holes 432. In addition, the induction module is arranged on the carrying base 410, and the coil module 426 is arranged on the rotating base 420, and the induction module controls the rotating base 420 to vibrate back and forth within this specific angle θ through the coil module 426 . In more detail, the carrying base 410 has, for example, magnetic materials 414a and 414b, and the induction module is The magnetism of the coil module 426 causes at least one of the attractive force and the repulsive force between the coil module 426 and the magnetic material 414 to control the rotating base 420 to vibrate back and forth within this specific angle θ, thereby changing the above-mentioned factors. The imaging position of the sub-image 214a.

In one embodiment of the present invention, the sensing module includes, for example, a circuit board (not shown) and a sensor (not shown). Among them, the circuit board is arranged on the base, and the sensor is arranged on the carrying base. This sensor is used to sense the swing amplitude of the rotating shaft 428 of the rotating base. When the rotating shaft 428 swings to the magnetic material 414a to a certain extent, the circuit board will change the magnetism of the coil module 426, so that there is a gap between the coil module 426 and the magnetic material 414a. A repulsive force is generated (an attraction force is generated between the coil module 426 and the magnetic material 414b), thereby causing the coil module 426 to move away from the magnetic material 414a. When the rotating shaft 428 swings toward the magnetic material 414b to a certain extent, the circuit board will change the magnetism of the coil module 426, causing a repulsive force to be generated between the coil module 426 and the magnetic material 414b (to cause a repulsive force between the coil module 426 and the magnetic material 414a. (generating an attractive force), thereby moving the coil module 426 away from the magnetic material 414b. By moving the coil module 426 close to/away from or away from/close to the magnetic material 414a/414b, the rotating base 420 can be vibrated back and forth within the specific angle θ, thereby changing the imaging positions of the above-mentioned sub-images 214a.

In the above-mentioned imaging displacement module 240, the coil module 426 includes, for example, a coil base 426a and a coil 426b. The coil 426b surrounds the coil base 426a, and the circuit board causes the coil module 426 to change the magnetism, for example, by changing the direction of the current in the coil 426b. It is worth noting that in this embodiment, the rotating shaft 428 of the rotating base 420 and the optical element portion 422 can be integrally formed by an injection mold. In one embodiment, the rotating shaft 428 of the rotating base 420 and the optical element portion 422 can also be They are manufactured separately, and then the optical element part 422 and the rotating shaft 428 are assembled together. In addition, the optical element part 422 may be a reflective sheet or a lens.

7 , 8 , and 9 respectively illustrate a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention, a cross-sectional side view along the dotted line D-D, and a cross-sectional side view along the dotted line A-A. The difference from the embodiments in Figures 4, 5, and 6 is that in Figure 4, the upper and lower ends of the rotating shaft 428 are arranged horizontally and vertically respectively, while in this embodiment, the upper and lower ends of the rotating shaft 428 are arranged horizontally. In addition, this embodiment divides the coil module into two parts 427a and 427b. When the rotating shaft 428 swings toward the magnetic material 414a to a certain extent, the circuit board will change the magnetism of the coil modules 427a and 427b, causing a repulsive force between the coil module 427a and the magnetic material 414a, and at the same time, the coil module 427b and the magnetic material part will An attractive force is generated between 414b, thereby causing the coil module 427a to move away from the magnetic material 414a. When the rotating shaft 428 swings toward the magnetic material 414b to a certain extent, the circuit board will change the magnetism of the coil modules 427a and 427b, causing a repulsive force between the coil module 427b and the magnetic material 414b, and at the same time, the coil module 427a and the magnetic material An attractive force is generated between the portions 414a, thereby causing the coil module 427b to move away from the magnetic material 414b. By moving the coil modules 427a and 427b close to/away from or away from/close to the magnetic material 414a/414b, the rotating base 420 can be vibrated back and forth within this specific angle θ, thereby changing the imaging positions of the above-mentioned sub-images 214a.

FIG. 10A is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. Figure 10B illustrates a top view of the embodiment of Figure 10A. Figure 10C illustrates a cross-sectional side view of the embodiment of Figure 10A. Please refer to Figure 10A, Figure 10B and Figure 10C. In this embodiment, the imaging displacement module 1000a includes a bearing base 1100 and a rotating Base 1200. The rotating base 1200 is coupled to the carrying base 1100 via at least one elastic member 1300 . The carrying base 1100 is adapted to control the biaxial rotation of the rotating base 1200 relative to the reference plane S. In this embodiment, the two axes of the reference plane S are, for example, the first rotation axis 1610 in the first direction X and the second rotation axis 1620 in the second direction Y. The angle between the first rotation axis 1610 and the second rotation axis 1620 is 90 degrees, and the first rotation axis 1610 and the second rotation axis 1620 define the reference plane S. The carrying base 1100 and the rotating base 1200 are symmetrical with respect to the first rotating axis 1610 . The rotating base 1200 rotates relative to at least one of the first rotating shaft 1610 and the second rotating shaft 1620 .

On the other hand, in this embodiment, the imaging displacement module 1000a further includes an optical element part 1500. The optical element unit 1500 is provided on the rotation base 1200 . The optical element section includes a mirror or a lens.

In this embodiment, at least one elastic member includes a first elastic member pair 1310 and a second elastic member pair 1320 . The bearing base 1100 includes a first bearing frame 1110 and a second bearing frame 1120. The first bearing frame 1110 is disposed on the second bearing frame 1120. The second carrying frame 1120 surrounds the first carrying frame 1110 . The first carrying frame 1110 is coupled to the rotating base 1200 via the first pair of elastic members 1310 , and the second carrying frame 1120 is coupled to the first carrying frame 1110 via the second pair of elastic members 1320 . The first pair of elastic members 1310 is disposed on opposite sides of the first bearing frame 1110 along one of the two rotating axes 1620 , and the second pair of elastic members 1320 is disposed on the second bearing frame 1120 along the other one of the two rotating axes 1610 . the opposite sides.

In this embodiment, at least one elastic member 1300 is a spring. In other embodiments, at least one elastic member 1300 can also be other elastically deformable objects, such as plates. The invention is not limited to gold parts, thin metals, torsion springs or plastics.

In this embodiment, the imaging displacement module 1000a further includes a plurality of actuating components 1400. These multiple actuating assemblies 1400 are disposed on at least one of the carrying base 1100 and the rotating base 1200 . The carrying base 1100 uses these actuating assemblies 1400 to control the biaxial rotation of the rotating base 1200 relative to the reference plane S.

More specifically, in this embodiment, the plurality of actuating components 1400 include a first actuating component 1410 and a second actuating component 1420 . The first actuating assembly 1410 is disposed on the carrying base 1100 and arranged along the second direction Y. The carrying base 1100 uses the second actuating component 1420 to control the rotating base 1200 to rotate relative to the second rotating shaft 1620. At this time, the rotating base 1200 and the first carrying frame 1110 rotate relative to the second carrying frame 1120 at the same time. On the other hand, the second actuation assembly 1420 is disposed on the carrying base 1100 and arranged along the first direction X. The carrying base 1100 uses the second actuating component 1420 to control the rotating base 1200 to rotate relative to the second rotating shaft 1620 , when the rotating base 1200 rotates relative to the first carrying frame 1110 .

In this embodiment, the first actuation component 1410 includes two magnetic materials M1 and M2 and a coil module C1. The magnetic materials M1 and M2 are symmetrical about the first rotation axis 1610 and are arranged on the carrying base 1100 . The coil module C1 is disposed on the carrying base 1100, and the coil module C1 is located between the magnetic materials M1 and M2. The second actuation component 1420 includes two magnetic materials M3 and M4 and two coil modules C2 and C3. The two magnetic materials M3 and M4 are symmetrically arranged on the second rotating axis 1620 on the carrying base 1100 . The two coil modules C2 and C3 are symmetrically arranged on the second rotation axis 1620 on the optical element part 1500 . The two coil modules C2 and C3 are located between the two magnetic materials M3 and M4. Magnetic material The materials M3 and M4 and the coil modules C2 and C3 are arranged along the first direction X. It is worth mentioning that the imaging displacement module 1000a of this embodiment uses the smallest total coil length and the smallest moment of inertia.

Specifically, in this embodiment, the induction module (not shown) controls the biaxial rotation of the rotating base 1200 relative to the reference plane S by changing the magnetism of the coil modules C1, C2, and C3. The sensing module (not shown) includes a circuit board and a sensor. The sensor is used to sense the swing amplitude of the first rotating shaft 1610 and the second rotating shaft 1620 . When the first rotating shaft 1610 or the second rotating shaft 1620 swings to a certain extent, the circuit board causes the coil modules C1, C2, and C3 to change their magnetism by changing the current direction on the coil modules C1, C2, and C3. Therefore, a repulsive or attractive force is generated between the coil modules C1, C2, C3 and the magnetic materials M1, M2, M3, M4, causing the coil modules C1, C2, C3 to stay away from or close to the magnetic materials M1, M2, M3, M4 , thereby controlling the biaxial rotation of the rotating base 1200 relative to the reference plane S.

In this embodiment, the plurality of actuating components include magnetic materials and coils. In other embodiments, these actuating components may also use piezoelectric materials or stepper motors to achieve the same actuating effect as in this embodiment, and the invention is not limited thereto.

It must be noted here that the following embodiments follow the component numbers and part of the content of the previous embodiments, where the same numbers are used to represent the same or similar elements, and descriptions of the same technical content are omitted. For descriptions of omitted parts, reference may be made to the foregoing embodiments and will not be repeated in the following embodiments.

FIG. 11A is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. FIG. 11B shows a top view of the imaging displacement module of the embodiment of FIG. 11A. FIG. 11C shows a cross-sectional side view of the imaging displacement module of the embodiment of FIG. 11A. Please refer to FIG. 11A, FIG. 11B and FIG. 11C at the same time. The main difference between the imaging displacement module 1000b and the imaging displacement module 1000a of this embodiment is: the setting of the coil module C4 in the second actuating component 1420 of this embodiment. On the rotating base 1200 , the coil module C4 surrounds the optical element portion 1500 of the rotating base 1200 . It is worth mentioning that the number of coils used in this embodiment is small, and the manufacturing process is relatively simple.

FIG. 12A is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. FIG. 12B shows a top view of the imaging displacement module of the embodiment of FIG. 12A. FIG. 12C shows a cross-sectional side view of the imaging displacement module of the embodiment of FIG. 12A. Please refer to FIG. 12A, FIG. 12B and FIG. 12C at the same time. The main differences between the imaging displacement module 1000c and the imaging displacement module 1000a of this embodiment are as follows. In this embodiment, the bearing base 1100 and the rotating base 1200 are symmetrical not only relative to the first rotating axis 1610 but also relative to the second rotating axis 1620 . In this embodiment, the first pair of elastic members 1310 is disposed on opposite sides of the second bearing frame 1120 along the first rotation axis 1610 , and the second pair of elastic members 1320 is disposed on the first bearing frame 1110 along the second rotation axis 1620 . Opposite sides. Furthermore, in this embodiment, the first actuation component 1410 includes two magnetic materials M5 and M6 and two coil modules C5 and C6. The magnetic materials M5 and M6 are both symmetrical to the first rotating axis 1610 and are arranged on the bearing base 1100 . The coil modules C5 and C6 are both symmetrical about the first rotation axis 1610 and are disposed on the optical element part 1500 . The magnetic materials M5 and M6 and the coil modules C5 and C6 are arranged along the second direction, and the coil modules C5 and C6 are located between the magnetic materials M5 and M6.

In this embodiment, the first actuating component 1410 and the second actuating component 1420 They are arranged symmetrically with respect to the first rotating axis 1610 and the second rotating axis 1620 respectively. In other words, the first actuator component 1410 and the second actuator component 1420 of the imaging displacement module 1000c of this embodiment are highly symmetrical, and the motors can be set to the same output force, making control easier. Furthermore, the first actuating component 1410 and the second actuating component 1420 have longer force arms than the previous embodiments, so the force required to activate the imaging displacement module 1000c is relatively small. In addition, since the distance between the four magnetic materials or the four coil modules is relatively far, they are less likely to be interfered with each other compared to the aforementioned embodiments.

FIG. 13A is a schematic diagram illustrating the moving direction of a sub-image according to an embodiment of the present invention. 13B and 13C are schematic diagrams illustrating the imaging displacement results of the sub-image in the embodiment of FIG. 13A. Please refer to FIG. 13A and FIG. 13B at the same time. In the embodiment of the present invention, the imaging displacement module is suitable for an optical device. The imaging displacement module switches the imaging positions of multiple sub-images so that the sub-images 500 move along one of the multiple moving directions. One moves one distance. The positions of these sub-images 500 are determined according to the rotation mode of the rotating base 1200 . Specifically, in this embodiment, when the rotating base 1200 rotates relative to one of the first rotating axis 1610 or the second rotating axis 1620, the positions of these sub-images 500 are, for example, on the screen 400 in FIG. 2, along multiple One of the moving directions moves a distance, and the multiple moving directions are, for example, the first direction X or the second direction Y. In this embodiment, this distance is approximately 0.7 times the pixel width. Therefore, these sub-images 500 can swing from the original position (solid line square) to four different positions (dashed line square). In other words, the image resolution can be increased to four times the original image resolution. In another embodiment, please refer to FIG. 13C , when the rotating base 1200 rotates relative to the first rotating axis 1610 and/or the second rotating axis 1620 , these sub-images 500 can move in multiple directions, such as It is a movement in one of the first direction X, the second direction Y, the third direction XY1 and the fourth direction XY2. Furthermore, when the rotating base 1200 rotates simultaneously relative to the first rotating axis 1610 and the second rotating axis 1620, these sub-images 500 move a distance in the third direction XY1 or the fourth direction XY2, for example, where the third direction XY1 And the fourth direction XY2 is between the first direction X and the second direction Y.

FIG. 14A is a schematic diagram illustrating the moving direction and imaging position of the sub-image according to another embodiment of the present invention. FIG. 14B is a schematic comparison diagram of the imaging positions of the sub-images when the rotating base of the embodiment of FIG. 14A is rotated in different directions within a frame time. Please refer to FIG. 14A first. In this embodiment, when the rotating base rotates relative to one of the first rotating axis or the second rotating axis, the sub-images 500 move along one of the directions X’ or Y’. Furthermore, when the rotating base rotates simultaneously relative to the first rotating axis and the second rotating axis, these sub-images 500 move a distance in one of the directions X'Y'1 or X'Y'2, where the direction X 'Y'1 and direction X'Y'2 are between direction X' and direction Y.

Please refer to FIG. 14A again. When the rotating base rotates relative to at least one of the first rotating axis and the second rotating axis, the positions of these sub-images 500 are along the directions X', Y', X'Y'1 and X'. Schematic diagram of Y'2 displacement. Specifically, in this embodiment, the moving distances of these sub-images 500 in the direction X' and the direction Y' are both 1 pixel width, and the sub-images 500 move in the direction X'Y'1 or the direction X'Y The distance moved on '2 is about 1.4 pixels wide.

To be more specific, in FIGS. 14A and 14B , the labeled numbers 1 to 9 respectively represent the same sub-image located at different position numbers at different times. The numerical label 1 represents the position where the sub-image 500 has not moved. Numerical labels 3 and 7 represent the position of the sub-image 500 moving to the right or left in the direction X'. Numerical labels 5 and 9 represent the positions where the sub-image 500 moves downward or upward in the direction Y'. Numerical labels 2 and 6 represent the positions where the sub-image 500 moves in the direction X’Y’1. Numerical labels 4 and 8 represent the positions where the sub-image 500 moves in the direction X’Y’2.

The numerical label 1 in FIG. 14B represents that within this time interval, these sub-images 500 are at the positions corresponding to the numerical label 1 in FIG. 14A . Similarly, the numbers 2 to 9 in FIG. 14B represent that within different time intervals, these sub-images 500 are at positions corresponding to the numbers 2 to 9 in FIG. 14A .

The vertical axis of FIG. 14B corresponds to the fact that the sub-image 500 can move in different directions (direction X' or/and direction Y') in different time intervals. For example, when the numerical label is 1, the corresponding vertical axis values in the direction X' and the direction Y' are both 0, which means that the sub-image 500 does not move in the direction X' nor in the direction Y'. When the digital label is 2, the corresponding vertical axis values in direction X' and direction Y' are both positive, which means that the sub-image 500 moves from position 1 to the direction between direction X' and direction Y' to position 2. That is the direction X'Y'1. When the numerical label is 3, the vertical axis value corresponding to the direction X' is positive and the vertical axis value corresponding to the direction Y' is 0, which means that the sub-image 500 moves from position 1 to position 3 in the direction X'. When the numerical label is 4, the vertical axis value corresponding to the direction X' is positive, and the vertical axis value corresponding to the direction Y' is negative, which represents the sub-image 500 moving from position 1 to the direction X' and the negative direction. The direction of Y' vector synthesis moves to position 4, which is the opposite direction of direction X'Y'. The subsequent numerical labels are deduced in the same way and will not be repeated here. It should be noted that these sub-images 500 may be in the direction X', direction The present invention is not limited to one of the sequences of movement in the Y' direction X'Y'1 or direction X'Y'2. In addition, the sub-image 500 (solid line square) can be moved to nine different positions (dashed line square) in Figure 14B. In other words, the image resolution can be increased to nine times the original image resolution.

FIG. 15 is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. Please refer to FIG. 15 . In this embodiment, the main difference between the imaging displacement module 1000d and the imaging displacement module 1000b is that the first rotation axis 1610 and the second rotation axis 1620 in this embodiment have an included angle. For example, the included angle in this embodiment is 45 degrees. That is to say, the first rotating axis 1610 and the second rotating axis 1620 in the exemplary embodiment of the present invention are not limited to being perpendicular to each other.

FIG. 16A is a schematic diagram illustrating the moving direction of a sub-image according to another embodiment of the present invention. FIG. 16B is a schematic diagram illustrating the imaging position of the sub-image in the embodiment of FIG. 16A. Please refer to Figure 16A. Specifically, in this embodiment, when the rotating base rotates relative to one of the first rotating axis or the second rotating axis, the positions of these sub-images move a distance along the direction X” or the direction Y”. . In this embodiment, the distance is 1 times the pixel width along the direction X" and about 1.1 times the pixel width along the direction Y". Therefore, these sub-images can swing from the original position (solid line square) to four different positions (dashed line square). In other words, the image resolution can be increased to four times the original image resolution.

FIG. 17A is a schematic three-dimensional view of an imaging displacement module applied inside a projection lens according to an embodiment of the present invention. FIG. 17B is a schematic three-dimensional view of an imaging displacement module applied inside a projection lens according to another embodiment of the present invention. Please refer to Figure 17A and Figure 17B at the same time. The imaging displacement module according to the embodiment of the present invention can also be placed on the projection lens. inside or in front of the projection lens, so that the resolution of the projected image is increased to four times the original image resolution.

FIG. 18A is a schematic structural perspective view of an imaging displacement module according to an embodiment of the present invention. FIG. 18B is a schematic structural perspective view of the first elastic member of the imaging displacement module according to the embodiment of FIG. 18A. FIG. 18C is a graph showing the relationship between the amplitude and time of the first elastic member of the imaging displacement module of the embodiment of FIG. 18A. FIG. 18D is a diagram illustrating the relationship between the amplitude and time of the signal used to drive the first elastic member.

The imaging displacement module of FIG. 18A can obtain sufficient teachings, suggestions and implementation instructions from the description of the foregoing embodiments. Therefore, only the component symbols required for the description in the following paragraphs are marked in FIG. 18A , and other parts will not be described again. In addition, since the first elastic member pair 1310 in this embodiment is similar to the second elastic member pair 1320, the following paragraphs take the first elastic member pair 1310 as an example to illustrate, and the operation mode of the second elastic member pair 1320 can be deduced in this way. .

Please refer to FIG. 18A. For example, in this embodiment, the first elastic member pair 1310 includes a first elastic member 1311 and a second elastic member 1312. The first elastic member 1311 and the second elastic member 1312 are arranged perpendicularly to each other along the first rotation axis 1610 of the imaging displacement module 1000e of this embodiment. This arrangement allows the first rotation axis 1610 to pass through the optical element part 1500 axis.

Generally speaking, when the amplitude of the first elastic member 1311 switches from one direction to another direction, the time required for the amplitude switching process is called transition time T. The length of the conversion time T determines the display quality of the sub-image. Since the conversion time T is inversely proportional to the natural frequency of the first elastic member 1311, and the natural frequency is It is related to the structural parameters of property 1311. Therefore, the aforementioned factors that affect the natural frequency can all be factors that affect the conversion time T.

Please refer to Figure 18B. Based on the above, the conversion time T is related to the structural parameters of the first elastic member 1311. In this embodiment, the structural parameter of the neck width NW of the first elastic member 1311 is, for example, 0.2 to 0.6 times the width w of the first elastic member 1311 . In addition, the thickness t of the first elastic member 1311 is also a factor affecting the conversion time T. In one embodiment, the thickness t of the first elastic member 1311 is at least 0.2 millimeters (mm). The design of this thickness can make the natural frequency of the first elastic member 1311 at least greater than 90 Hz. Since the natural frequency is inversely proportional to the switching time T, this thickness design can also effectively reduce the switching time T.

In addition to the aforementioned structural parameters of the first elastic member 1311 that affect the conversion time T, factors that affect the conversion time T also include the vibration mode of the first elastic member 1311. Please refer to FIG. 18C and FIG. 18D simultaneously. In this embodiment, the conversion time T is reduced by changing the vibration mode of the first elastic member 1311 . Specifically, when the amplitude of the first elastic member 1311 changes from one direction to another, the driving signal waveform is as shown in FIG. 18D . In addition, the driving signal waveform is not limited to the square wave driving signal shown in FIG. 18D , but may also be a sine wave driving signal waveform. The conversion time T is less than 1 millisecond, and the optimal range is between 1 and 0.05 milliseconds, so that the optical device can provide good display quality.

In order to better understand the practical application of the imaging displacement module mentioned in the foregoing embodiments, the following paragraphs propose multiple example embodiments. Figure 19A and Figure 19B respectively illustrate different three-dimensional printing devices using the imaging displacement module according to any of the above embodiments of the present invention. A schematic diagram, and FIG. 19C shows a schematic diagram of a 3D printed object 3D printed by the different 3D printing device of FIG. 19A or 19B. In this application example embodiment, the three-dimensional printing device gradually produces a three-dimensional object from multi-layer cross-sections of a three-dimensional model constructed by computer-aided design (CAD) or animation simulation software. Please refer to FIG. 19A first. In this application example, the 3D printing technology used by the 3D printing device 1900a is, for example, stereolithography (Stereo Lithography, SLA for short). The 3D printing device 1900a includes a molding process. The slot 1910, the projection device 1920, the lifting platform 1930 and any of the imaging displacement modules 1940 mentioned in the previous embodiments, in which the three-dimensional printing device 1900a is used to form the three-dimensional printing object OB, wherein the three-dimensional printing in Figure 19A The device is, for example, a sunken three-dimensional printing device 1900a.

The following paragraphs will introduce each component of the three-dimensional printing device 1900a in this application example embodiment in detail.

The molding groove 1910 is used to accommodate the light-sensitive material 1912, where the light-sensitive material 1912 will undergo a photopolymerization reaction and solidify under the irradiation of a light beam with a specific wavelength. The projection device 1920 has a light-emitting element. The light-emitting element used may be a light-emitting diode (LED), a laser (Laser) or other suitable light-emitting elements. The light-emitting element is suitable for emitting the image beam B. , where the image beam B can provide light (such as ultraviolet light) in a wavelength band that can cure the photosensitive material 1912, but the wavelength band of the image beam B is not limited to this, as long as it can cure the photosensitive material 1912. The lifting platform 1930 has a printing area 1932 and is adapted to move within the forming groove 1910 . In addition, the three-dimensional printing device 1900a in this application example embodiment also includes The controller (not shown) and the input interface (not shown) are electrically connected to the projection device 1920, the lifting platform 1930 and the input interface. The user can use the input interface and computer-aided design (Computer Aided Design, Abbreviated as: CAD) or animation modeling software to input the three-dimensional solid model of the three-dimensional printing object OB. Specifically, the input interface may be a mouse, a keyboard, a touch device, or other interfaces that enable the user to input a three-dimensional solid model of the three-dimensional printing object OB. The controller controls the action mode of the lifting stage 1930 and the image beam B based on the three-dimensional solid model. Specifically, the controller can be a calculator, a Micro Controller Unit (MCU), a Central Processing Unit (CPU), or other programmable controllers (Microprocessor). ), Digital Signal Processor (DSP for short), programmable controller, Application Specific Integrated Circuits (ASIC for short), Programmable Logic Device (Programmable Logic Device for short) (PLD) or other similar devices. In this application example embodiment, the imaging displacement module 1940 is disposed outside the projection device 1920, and the imaging displacement module 1940 is disposed on the path of the image beam B. In other application example embodiments, the imaging displacement module 1940 It can be disposed in the projection device 1920, as long as the imaging displacement module 1940 is disposed on the path of the image beam B, and the position where the imaging displacement module 1940 is disposed is not limited to this.

Next, we will introduce the three-dimensional printing process of stereolithography. The process is roughly as follows: First, use Computer Aided Design (CAD) to design a three-dimensional solid model, and use discrete programs to cut the three-dimensional solid model. Slice processing is performed to obtain multiple hierarchical scan paths. Then, the movement of the image beam B and the lifting stage 1930 is precisely controlled according to the scanning path of each slice. It can be seen from Figure 19A that the printing area 1932 is immersed in the photosensitive material 1912. The image beam B irradiates part of the photosensitive material 1912 according to the scanning path of the first layer. This part of the photosensitive material 1912 undergoes a photopolymerization reaction and solidifies. One of the cross-sections of the three-dimensional printing object OB is generated, and the first solidified layer is obtained and attached to the printing area 1932. After that, the lifting platform 1930 moves downward a small distance, and the originally formed first solidified layer moves downward correspondingly, and the upper surface of the originally formed first solidified layer can be used as a bearing surface, so that the first solidified layer can be Cover another layer of light-sensitive material 1912, and then accurately control the image beam B according to the scanning path of the second slice layer, so that the image beam B irradiates the surface of another layer of light-sensitive material 1912 according to the scanning path of the second slice layer, thereby obtaining the second layer of light-sensitive material 1912. After continuously making multiple layers of the solidified layer according to this pattern, a three-dimensional printed object OB as shown in Figure 19C can be formed. It should be noted that the shape of the three-dimensional printing object OB shown in FIG. 19C is only an example, and the shape of the three-dimensional printing object OB is not limited thereto.

Please refer to Figure 19B. Figure 19B is a schematic diagram of another three-dimensional printing device using the imaging displacement module according to the above embodiment of the present invention. Please refer to Figure 19B first. The three-dimensional printing device 1900b shown in Figure 19B is similar to that shown in Figure 19A. The main difference of the three-dimensional printing device 1900a shown is that: the material of the molding groove 1910 includes transparent materials or light-transmitting materials, and the lifting platform 1930 and the projection device 1920 are respectively arranged on opposite sides of the molding groove 1910, in which Figure 19B The three-dimensional printing device 1900b is, for example, a pull-up three-dimensional printing device 1900b. Since the material of the forming groove 1910 includes a transparent material or a light-transmitting material, the image beam B can illuminate the photosensitive material through the forming groove 1910 Material 1912. When performing three-dimensional printing, the image beam B irradiates part of the light-sensitive material 1912 according to the scanning path of the first layer. This part of the light-sensitive material 1912 undergoes a photopolymerization reaction and solidifies, generating one of the cross-sections of the three-dimensional printing object OB. , thereby obtaining the first solidified layer attached to the printing area 1932. After that, the lifting platform 1930 moves upward a small distance, and the originally formed first solidified layer moves upward correspondingly, and the lower surface of the originally formed first solidified layer can be used as a bearing surface, so that the lower surface of the first solidified layer The surface is covered with another layer of light-sensitive material 1912 and then the image beam B is accurately controlled according to the scanning path of the second slice layer, so that the image beam B is irradiated to the surface of another layer of light-sensitive material 1912 according to the scanning path of the second slice layer, thereby obtaining the second After continuously making multiple layers of the solidified layer according to this pattern, a three-dimensional printed object OB as shown in Figure 19C can be formed.

Please refer to Figure 19A and Figure 19B at the same time. Since the imaging displacement module 1940 is arranged on the path of the image beam B, after the image beam B passes through the imaging displacement module 1940, the image beam B will be projected to different positions at different times. , in detail, the solid lines shown in Figures 19A and 19B are the positions where the image beam B is projected at a certain moment; and the dotted lines shown in Figures 19A and 19B are the images The position where the image beam B is projected at another time. The detailed operation method of the imaging displacement module 1940 can be obtained from the description of the foregoing embodiments with sufficient teachings, suggestions and implementation instructions, and will not be described again here. Therefore, since the three-dimensional printing devices 1900a and 1900b in this application example embodiment have the imaging displacement module 1940 mentioned in any of the previous embodiments, the pixels of the image beam B projected by the projection device 1920 can be increased, so that the Three-dimensional printing devices 1900a and 1900b curing photosensitive When the material is 1912, a higher resolution can be obtained, thereby allowing the 3D printed object OB to have better surface accuracy.

To sum up, in the three-dimensional printing device according to the exemplary embodiment of the present invention, since the rotating base in the optical path adjustment structure is provided with a first area and a second area at approximately diagonal positions, and the bearing base and the rotating shaft are integrated The rotating base only rotates along the virtual axis, so when the image beam passes through the optical element on the rotating base, the optical path of the image beam will be changed by the optical element because the optical element is driven by the rotating base. Since the optical path of the image beam will be changed by the optical path adjustment structure, the three-dimensional printing device according to the embodiment of the present invention can increase the pixels of the image frame formed by the image beam, thereby improving the three-dimensional printing produced by the three-dimensional printing device. Objects have better surface accuracy.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

1900a: Three-dimensional printing device

1910: Forming slot

1912:Light sensitive materials

1920:Projection device

1930:Lifting platform

1932:Print area

1940: Imaging displacement module

B:Image beam

OB: 3D printing object

Claims (11)

An optical path adjustment mechanism includes: a bearing base; a rotating base located adjacent to the bearing base; the rotating base is provided with a first area and a second area at approximately diagonal positions; the rotating base It includes a carrying base and a rotating shaft, the rotating shaft is connected to the first area; an optical element is provided on the carrying base; a coil is provided on the rotating base; and a magnetic material is provided on the carrying base and adjacent to the Coil, wherein the bearing seat and the rotating shaft are integrally formed. The optical path adjustment mechanism as claimed in claim 1, wherein the optical path adjustment mechanism is provided with only a single actuator, and the single actuator includes the coil and the magnetic material. The optical path adjustment mechanism of claim 1, wherein the rotating shaft is provided with a first end and a second end that are generally opposite, and the first end and the second end are respectively provided with a hole. The optical path adjustment mechanism as claimed in claim 1, wherein the rotating shaft and the optical element are integrally formed. The optical path adjustment mechanism according to claim 3, wherein the first end of the rotating shaft is located in the first area, and the second end of the rotating shaft is located in the second area. The optical path adjustment mechanism as claimed in claim 3, wherein the first end and the second end of the rotating shaft are located on the same plane. The optical path adjustment mechanism according to any one of claims 1 to 6, wherein the optical element includes a reflective sheet or a lens. The optical path adjustment mechanism as described in any one of claims 1 to 6 can be used in an optical device, wherein the optical device further includes an internal total reflection lens. The optical path adjustment mechanism as described in any one of claims 1 to 6 can be used in an optical device, wherein the optical device further includes a light valve perpendicular to the optical element. A method of manufacturing an optical path adjustment mechanism, including: providing a bearing base; assembling a rotating base adjacent to the bearing base, the rotating base being provided with a first area and a second area at approximately diagonal positions, the The rotating base includes a carrying base and a rotating shaft, the rotating shaft is connected to the first area; assembling an optical element on the carrying base; assembling a coil on the rotating base; and assembling a magnetic material on and adjacent to the carrying base The coil, the bearing seat and the rotating shaft are integrally formed. An optical path adjustment mechanism includes: a bearing base; a rotating base located adjacent to the bearing base; the rotating base is provided with a first area and a second area at substantially diagonal positions; the rotating base It includes a bearing base and a rotating shaft, the rotating shaft is connected to the first area; an optical element is provided on the bearing base; A coil is provided on the rotating base; and two magnetic materials are provided on the carrying base, the coil is located between the two magnetic materials, and the coil is adapted to surround the position of the carrying base.

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