TWI613503B - Optical path adjusting mechanism - Google Patents

Abstract

An optical path adjustment mechanism includes a rotation base, an optical element, a coil, a first spring, and a second spring. The rotating base is provided with a first region and a second region at diagonal positions. The optical element is disposed in the rotating base. The coil surrounds the periphery of the rotating base. One end of the first spring is connected to the first area of the rotating base. One end of the second spring is connected to the second area of the rotating base. Another light path adjustment mechanism has also been proposed.

Description

Light path adjustment mechanism

The invention relates to an optical path adjustment mechanism.

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

The invention provides an optical path adjustment mechanism, which can make a three-dimensional printed object listed on a three-dimensional printing device to which the optical path adjustment mechanism is applied have good surface accuracy.

An embodiment of the present invention provides an optical path adjustment mechanism including a rotation base, an optical element, a coil, a first spring, and a second spring. The rotating base is provided with a first region and a second region at diagonal positions. The optical element is disposed in the rotating base. The coil surrounds the periphery of the rotating base. One end of the first spring is connected to the first area of the rotating base. One end of the second spring is connected to the second area of the rotating base.

An embodiment of the present invention provides an optical path adjustment mechanism, a base, a frame, an optical element, a first spring, and a second spring. The frame is provided with a first region and a second region at diagonal positions. The optical element is provided in the frame. The first spring is provided with a first end and a second end. The first end is connected to a first region of the frame. The second end is connected to one end of the base, and the first spring is provided with a first plane between the first end and the second end. The second spring is provided with a first end and a second end. The first end is connected to the second area of the frame. The second end is connected to the other end of the base, and the second spring is provided with a second plane between the first end and the second end.

Based on the above, in the light path adjustment structure of the exemplary embodiment of the present invention, since the first spring and the second spring are respectively connected to the first region and the second region located at the diagonal positions of the rotary base, the rotary base passes through the spring. The elastic force is used to rotate. 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 is changed by the optical path adjustment structure of the embodiment of the present invention, the three-dimensional printing device applying the optical path adjustment structure of the embodiment of the present invention can increase the pixels of the image frame formed by the image beam, and further make the three-dimensional array The three-dimensional printed objects printed by the printing device have better surface accuracy.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of various embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as "up", "down", "front", "rear", "left", "right", etc., are only directions referring to the attached drawings. Therefore, the directional terms used are used for illustration, not for limiting the present invention. FIG. 1 is 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. The lighting system 110 has a light source 112 adapted to provide a light beam 114, and the digital micromirror device 120 is disposed on a transmission path of the light beam 114. The digital micromirror device 120 is adapted to convert the light beam 114 into a plurality of sub-images 114a. In addition, the projection lens 130 is disposed 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 a transmission path of these sub-images 114a.

In the optical device 100 described above, the light beam 114 provided by the light source 112 will sequentially pass through a color wheel 116, a light integration rod 117, a lens group 118, and a TIR Prism 119. Afterwards, the total internal reflection 稜鏡 119 reflects the light beam 114 to the digital micromirror device 120. At this time, the digital micromirror device 120 converts the light beam 114 into a plurality of sub-images 114a, and these sub-images 114a sequentially pass through the internal total reflection 119 and the vibration mechanism 140, and project these sub-images 114a through the projection lens 130. On screen 400.

When the sub-images 114a pass through the vibration mechanism 140, the vibration mechanism 140 changes a transmission path of some of the sub-images 114a. That is, the sub-images 114a passing through the vibration mechanism 140 are projected on a first position (not shown) on the screen 400, and the sub-images 114a passing through the vibration mechanism 140 are projected on another part of the time. The second position (not shown) on the screen 400, wherein the first position and the second position are different by a fixed distance in the horizontal direction (X axis) or vertical direction (Z axis). Since the vibration mechanism 140 can only move the imaging positions of the sub-images 114a by a fixed distance in the horizontal or vertical direction, the horizontal or vertical resolution of the image can be improved.

FIG. 2 is a schematic structural diagram of an optical device according to an embodiment of the invention. Referring to FIG. 2, the optical device 200 in this embodiment includes an illumination system 210, a reflective light valve 220, a projection lens 230, an imaging displacement module 240, and a screen 400. The lighting system 210 has a light source 212, which is adapted to provide a light beam 214, and the reflective light valve 220 is disposed on a 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 illustrates an imaging schematic diagram of the optical device in this embodiment. When the sub-image 214a passes through the imaging displacement module 240, the imaging displacement module 240 changes a part of the transmission paths of these sub-images 214a. That is, the sub-images 214a passing through the imaging displacement module 240 are projected on the first position (solid line grid) on the screen 400, and the sub-images passing through the imaging displacement module 240 in another part of the time The image 214a is projected at the second position (the dotted line grid) on the screen 400, so the horizontal resolution and the vertical resolution of the image can be improved 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 monocrystalline silicon reflective liquid crystal panel. In this embodiment, a digital micromirror device is used as an example. The light beam 214 provided by the light source 212 described above will sequentially pass through the color wheel 216, the light collecting column 217, the lens group 218, and the 稜鏡 219, and the 稜鏡 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 sequentially pass through the imaging displacement module 240, 稜鏡 219, or sequentially through the 稜鏡 219, imaging displacement module 240, and these sub-images 214a are projected on the screen 400 via 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 may be omitted. In addition, a micro lens array (lens array) may be used instead of the light collecting column 217 for light homogenization.

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

In the above-mentioned imaging displacement module 240, the supporting base 410 includes, for example, a magnetic material base 412, two magnetic materials 414a, 414b, and a sensing module (not shown). The rotation base 420 includes, for example, an optical element portion 422, a carrier 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 the holes 432. In addition, the induction module is disposed on the bearing base 410, and the coil module 426 is disposed on the rotating base 420, and the induction module controls the rotating base 420 to vibrate back and forth within this specific angle θ by the coil module 426 . In more detail, the carrier base 410 includes, for example, magnetic materials 414a and 414b, and the induction module changes the magnetism of the coil module 426 to generate attractive and repulsive forces between the coil module 426 and the magnetic material 414. At least one of the two is used to control the rotating base 420 to vibrate back and forth within this specific angle θ, thereby changing the imaging positions of these sub-images 214a.

In an embodiment of the present invention, the sensing module includes, for example, a circuit board (not shown) and a sensor (not shown). The circuit board is arranged on the base, and the sensor is arranged on the bearing 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, the circuit board will change the magnetism of the coil module 426 so that between the coil module 426 and the magnetic material 414a. A repulsive force is generated (attractive force is generated between the coil module 426 and the magnetic material 414b), and the coil module 426 is further away from the magnetic material 414a. When the rotating shaft 428 swings to a certain extent to the magnetic material 414b, the circuit board will change the magnetism of the coil module 426, so that a repulsive force will be generated between the coil module 426 and the magnetic material 414b (to make the coil module 426 and the magnetic material 414a (Attractive force is generated), and the coil module 426 is further away from the magnetic material 414b. By making 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 this specific angle θ, thereby changing the imaging positions of these sub-images 214a.

In the imaging displacement module 240 described above, the coil module 426 includes, for example, a coil holder 426a and a coil 426b. Among them, the coil 426b is surrounded on the coil base 426a. For example, the circuit board changes the magnetism of the coil module 426 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 rotation base 420 and the optical element portion 422 can be integrally formed by an injection mold. In one embodiment, the rotating shaft 428 and the optical element portion 422 of the rotating base 420 can be manufactured separately, and the optical element portion 422 and the rotating shaft 428 can be assembled together. In addition, the optical element portion 420 may be a reflection sheet or a lens.

FIGS. 7, 8 and 9 respectively show a structural perspective view of an imaging displacement module according to another embodiment of the present invention, a cross-sectional side view along the D-D dotted line direction, and a cross-sectional side view along the A-A dotted line direction. The difference from the embodiments of FIGS. 4, 5 and 6 is that the upper and lower ends of the rotating shaft 428 in FIG. 4 are respectively arranged horizontally and vertically. In this embodiment, the upper and lower ends of the rotating shaft 428 are horizontally arranged. In addition, this embodiment divides the coil module into two parts 427a, 427b. When the rotating shaft 428 swings to the magnetic material 414a by a certain amount, the circuit board will change the magnetism of the coil modules 427a and 427b, so that a repulsive force is generated between the coil module 427a and the magnetic material 414a, and at the same time, the coil module 427b and the magnetic material portion An attractive force is generated between 414b, and the coil module 427a is further away from the magnetic material 414a. When the rotating shaft 428 swings to the magnetic material 414b, the circuit board will change the magnetism of the coil modules 427a and 427b, so that a repulsive force is generated between the coil module 427b and the magnetic material 414b, and at the same time, the coil module 427a and the magnetic material are caused. An attractive force is generated between the portions 414a, and the coil module 427b is further separated from the magnetic material 414b. By making the coil modules 427a, 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, and then the imaging positions of these sub-images 214a are changed.

FIG. 10A is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. FIG. 10B is a top view of the embodiment of FIG. 10A. FIG. 10C is a cross-sectional side view of the embodiment of FIG. 10A. Please refer to FIG. 10A, FIG. 10B and FIG. 10C first. In this embodiment, the imaging displacement module 1000 a includes a supporting base 1100 and a rotating base 1200. The rotating base 1200 is coupled to the supporting base 1100 via at least one elastic member 1300. The supporting 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 included angle between the first rotating shaft 1610 and the second rotating shaft 1620 is 90 degrees, and the first rotating shaft 1610 and the second rotating shaft 1620 define a reference plane S. The supporting base 1100 and the rotating base 1200 are symmetrical with respect to the first rotation axis 1610. The rotation base 1200 rotates with respect to at least one of the first rotation shaft 1610 and the second rotation shaft 1620.

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

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

In this embodiment, the at least one elastic member 1300 is a spring. In other embodiments, the at least one elastic member 1300 may also be another elastically deformable object, such as a sheet metal member, a thin metal, a torsion spring or plastic, which is not limited in the present invention.

In this embodiment, the imaging displacement module 1000 a further includes a plurality of actuation components 1400. The plurality of actuating components 1400 are disposed on at least one of the bearing base 1100 and the rotating base 1200. The loading base 1100 controls the biaxial rotation of the rotating base 1200 relative to the reference plane S by using these actuating components 1400.

More specifically, in this embodiment, the plurality of actuation components 1400 include a first actuation component 1410 and a second actuation component 1420. The first moving unit 1410 is disposed on the supporting base 1100 and is arranged along the second direction Y. The supporting base 1100 uses the second actuating component 1410 to control the rotating base 1200 to rotate relative to the first rotating shaft 1610. At this time, the rotating base 1200 and the first supporting frame 1110 are rotated relative to the second supporting frame 1120 at the same time. On the other hand, the second actuating components 1420 are disposed on the supporting base 1100 and arranged along the first direction X. The supporting base 1100 uses the second actuating component 1410 to control the rotating base 1200 to rotate relative to the second rotating shaft 1620. At this time, the rotating base 1200 rotates relative to the first supporting frame 1110.

In this embodiment, the first actuation component 1410 includes two magnetic materials M1, M2, and a coil module C1. The magnetic materials M1 and M2 are symmetrical to the first rotating shaft 1610 and disposed on the supporting base 1100. The coil module C1 is disposed on the first rotating shaft 1610, and the second magnetic member 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 disposed on the bearing base 1100. The two coil modules C2 and C3 are disposed on the optical element portion 1500 in a symmetrical second rotation axis 1620. The two coil modules C2 and C3 are located between the two magnetic materials M3 and M4. The magnetic materials M3 and M4 are aligned with the coil modules C2 and C3 along the first direction X. It is worth mentioning that the total length of the coil used in the imaging displacement module 1000a of this embodiment is the smallest, and its moment of inertia is the smallest.

Specifically, in this embodiment, the induction module (not shown) controls the biaxial rotation of the rotation 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 a certain amplitude, the circuit board changes the magnetic properties of the coil modules C1, C2, and C3 by changing the direction of the current on the coil modules C1, C2, and C3. Therefore, a repulsive force or an attractive force is generated between the coil modules C1, C2, and C3 and the magnetic materials M1, M2, M3, and M4, so that the coil modules C1, C2, and C3 are away from or close to the magnetic materials M1, M2, M3, and M4. , And then control the biaxial rotation of the rotation base 1200 relative to the reference plane S.

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

It must be noted here that the following embodiments use the component numbers and parts of the foregoing embodiments, in which the same reference numerals are used to indicate the same or similar components, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments are not repeated.

FIG. 11A is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. FIG. 11B is a top view of the imaging displacement module of the embodiment in FIG. 11A. FIG. 11C is a cross-sectional side view of the imaging displacement module of the embodiment shown in 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 in this embodiment is that the coil module C4 in the second actuation component 1420 of this embodiment is provided. On the rotation base 1200, the coil module C4 surrounds the optical element portion 1500 of the rotation 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 is a top view of the imaging displacement module of the embodiment in FIG. 12A. 12C is a cross-sectional side view of the imaging displacement module of the embodiment shown in FIG. 12A. Please refer to FIG. 12A, FIG. 12B, and FIG. 12C together. The main differences between the imaging displacement module 1000c and the imaging displacement module 1000a in this embodiment are as follows. In this embodiment, the bearing base 1100 and the rotating base 1200 are symmetrical with respect to the second rotation axis 1620 in addition to being symmetrical with respect to the first rotation axis 1610. 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. In addition, 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 symmetrical to the first rotating shaft 1610 and are disposed on the bearing base 1100. The coil modules C5 and C6 are both symmetrical to the first rotating shaft 1610 and are disposed on the optical element portion 1500. The magnetic materials M5 and M6 and the coil modules C5 and C6 are arranged along the second direction. The coil modules C5 and C6 are located between the magnetic materials M5 and M6.

In this embodiment, the first actuation component 1410 and the second actuation component 1420 are disposed symmetrically to the first rotation shaft 1610 and the second rotation shaft 1620, respectively. That is, the first actuation component 1410 and the second actuation component 1420 of the imaging displacement module 1000c of this embodiment have a high degree of symmetry, and the motor can set the same output, which is easier to control. Furthermore, the first actuation component 1410 and the second actuation component 1420 have a longer force arm relative to the foregoing embodiment, 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 long, compared with the foregoing embodiments, they are less likely to be interfered with each other.

13A is a schematic diagram illustrating a moving direction of a child image according to an embodiment of the present invention. FIG. 13B and FIG. 13C are schematic diagrams showing the imaging displacement results of the child images 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 are in multiple moving directions One moves a distance. The positions of these sub-images 500 are determined according to the rotation method of the rotation base 1200. Specifically, in this embodiment, when the rotation base 1200 is rotated relative to one of the first rotation axis 1610 or the second rotation axis 1620, the positions of these sub-images 500 are, for example, on the screen 400 in FIG. One of the moving directions moves a distance, and the plurality of moving directions are, for example, the first direction X or the second direction Y. In this embodiment, this distance is about 0.7 times the pixel width. Therefore, these sub-images 500 can be swung from the original position (solid line grid) to four different positions (dotted line grid), 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 rotation base 1200 is rotated with respect to the first rotation axis 1610 or / and the second rotation axis 1620, the sub-images 500 may be moved in multiple directions such as the first direction X, One of the second direction Y, the third direction XY1, and the fourth direction XY2 moves. Furthermore, when the rotation base 1200 rotates relative to the first rotation axis 1610 and the second rotation axis 1620 at the same time, these sub-images 500 move a distance, for example, in the third direction XY1 or the fourth direction XY2, where the third direction XY1 And the fourth direction XY2 is between the first direction X and the second direction Y.

14A is a schematic diagram illustrating a moving direction and an imaging position of a child 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 in a frame time. Please refer to FIG. 14A first. In this embodiment, when the rotary base rotates with respect to one of the first rotation axis or the second rotation axis, the sub-images 500 move in one of the directions X 'or Y'. Furthermore, when the rotary base is rotated simultaneously with respect to the first rotation axis and the second rotation axis, the 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 the direction X' and the direction Y '.

Please refer to FIG. 14A again, when the rotation base is rotated with respect to at least one of the first rotation axis and the second rotation axis, the positions of the sub-images 500 are along the directions X ′, Y ′, X′Y′1, and X ′. Schematic of Y'2 displacement. Specifically, in this embodiment, the distances that the sub-images 500 move in the direction X ′ and the direction Y ′ are 1 pixel width. The sub-images 500 are in the direction X′Y'1 or the direction X'Y. The distance moved on '2 is about 1.4 pixel width.

In more detail, in Figs. 14A and 14B, the numerals 1 to 9 marked by them respectively represent the same sub-image located at different positions at different times. The numeral 1 represents a position where the sub-image 500 is not moved. Reference numerals 3 and 7 represent positions where the sub-image 500 moves to the right or left in the direction X '. The numerals 5 and 9 represent positions where the sub-image 500 moves downward or upward in the direction Y '. Reference numerals 2 and 6 represent positions where the sub-picture 500 moves in the direction X'Y'1. Reference numerals 4 and 8 represent positions where the sub-picture 500 moves in the direction X'Y'2.

The number 1 in FIG. 14B represents that the sub-images 500 are in positions corresponding to the number 1 in FIG. 14A during this time interval. Similarly, the numerals 2 to 9 in FIG. 14B represent that the sub-images 500 are at positions corresponding to the numerals 2 to 9 in FIG. 14A in different time intervals.

The vertical axis of FIG. 14B corresponds to that the sub-image 500 can be moved in different directions (direction X 'or / and direction Y') in different time intervals. For example, when the number label is 1, the vertical axis values corresponding to the directions X 'and Y' are both 0, which means that the sub-image 500 does not move in the direction X 'or Y'. When the number label is 2, the vertical axis values corresponding to the directions X 'and Y' are both positive, which means that the sub-image 500 moves from position 1 to the direction between the direction X 'and the direction Y' to position 2. That is the direction X'Y'1. When the numeral number is 3, the value of the vertical axis corresponding to the direction X 'is positive and the value of the vertical axis corresponding to the direction Y' is 0, which means that the sub-image 500 moves from position 1 to direction X 'to position 3. When the number 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 from position 1 to the direction X ′ and the negative direction. The direction of the Y 'vector synthesis moves to position 4, which is the opposite direction of the direction X'Y'. The following numerical references are deduced by analogy, and are not repeated here. It should be noted that here is only an example of the order in which the sub-images 500 can be moved in the direction X ', the direction Y', the direction X'Y'1, or the direction X'Y'2. Limited. In addition, the sub-image 500 (solid line grid) can be moved to different nine positions (dotted line grid) in FIG. 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. Referring 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 shaft 1610 and the second rotation shaft 1620 of this embodiment have an included angle. For example, the included angle of this embodiment is 45 degrees, that is, the first rotating shaft 1610 and the second rotating shaft 1620 of the exemplary embodiment of the present invention are not limited to the two being perpendicular to each other.

16A is a schematic diagram illustrating a moving direction of a child image according to another embodiment of the present invention. FIG. 16B is a schematic diagram illustrating an imaging position of a child image in the embodiment of FIG. 16A. Please refer to FIG. 16A. Specifically, in this embodiment, when the rotation base is rotated with respect to one of the first rotation axis or the second rotation axis, the positions of these sub-images move a distance in the direction X ″ or the direction Y ″. . In this embodiment, this distance is 1 times the pixel width in the direction X ″ and about 1.1 times the pixel width in the direction Y ″. Therefore, these sub-images can be swung from their original positions (solid lines) to four different positions (dashed lines). In other words, the image resolution can be increased to four times the original image resolution.

FIG. 17A is a schematic perspective view of an imaging displacement module applied to the inside of a projection lens according to an embodiment of the present invention. FIG. 17B is a schematic perspective view of an imaging displacement module applied to the inside of a projection lens according to another embodiment of the present invention. Please refer to FIG. 17A and FIG. 17B at the same time. The imaging displacement module according to the embodiment of the present invention may also be placed inside or in front of the projection lens, so that the projected image resolution 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 a first elastic member of the imaging displacement module in 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 illustrates 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 teaching, suggestions, and implementation description from the description of the foregoing embodiment. Therefore, in FIG. 18A, only the component symbols required for the description in the following paragraphs are marked, and the other parts are not repeated. In addition, since the first elastic member pair 1310 in this embodiment is similar to the second elastic member pair 1320, the following paragraphs are described by taking the first elastic member pair 1310 as an example, and the operation manner of the second elastic member pair 1320 can be analogized .

Referring 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 disposed along the first rotation axis 1610 of the imaging displacement module 1000e of this embodiment in a manner perpendicular to each other. This configuration allows the first rotation axis 1610 to pass through the optical element portion 1500. Axis.

Generally, when the amplitude of the first elastic member 1311 is changed from one direction to another direction, the time required for the amplitude conversion process is referred to as the transition time T. The length of the transition 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, the natural frequency is related to the structural parameters of the first elastic member 1311. Therefore, the aforementioned factors affecting the natural frequency can all be factors that affect the conversion time T.

Please refer to FIG. 18B. Following the above, the transition 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 that affects the switching time T. In one embodiment, the thickness t of the first elastic member 1311 is at least 0.2 millimeters (mm) or more. The thickness is designed so that the natural frequency of the first elastic member 1311 is at least greater than 90 Hz. Since the natural frequency is inversely proportional to the conversion time T, this thickness design can also effectively reduce the conversion 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 include the vibration mode of the first elastic member 1311. Please refer to FIG. 18C and FIG. 18D at the same time. In this embodiment, the switching 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 is changed from one direction to another direction, the driving signal waveform is as shown in FIG. 18D. In addition, the driving signal waveform is not limited to the driving signal in the form of a square wave as shown in FIG. 18D, but may also be the driving signal waveform in the form of a sine wave. The conversion time T is less than 1 millisecond, and the preferred 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 a plurality of exemplary embodiments. FIG. 19A and FIG. 19B are schematic diagrams of different three-dimensional printing apparatuses to which the imaging displacement module of any one of the above-mentioned embodiments of the present invention is applied, and FIG. 19C is a three-dimensional array of different three-dimensional printing apparatuses of FIG. 19A or 19B. Schematic diagram of printed 3D printed objects. In the embodiment of the present application example, the three-dimensional printing device gradually produces three-dimensional objects by using a multi-layered cross-section of a three-dimensional model constructed by computer aided design (Computer Aided Design, CAD for short) or animation simulation software. Please refer to FIG. 19A first. The three-dimensional printing technology used by the three-dimensional printing device 1900a in this application example is, for example, a stereo light curing molding method (Stereo Lithography, SLA for short). The slot 1910, the projection device 1920, the lifting stage 1930, and any of the imaging displacement modules 1940 described in the foregoing embodiments, wherein the three-dimensional printing device 1900a is used to form a three-dimensional printing object OB, and the three-dimensional printing of FIG. 19A The device is, for example, a sink-type three-dimensional printing device 1900a.

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

The molding groove 1910 is used to receive a light-sensitive material 1912. The light-sensitive material 1912 is cured by a photopolymerization reaction 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 in the projection device 1920 can be a light emitting diode (LED), a laser, or other applicable light-emitting elements. The light-emitting element is suitable for emitting an image beam B. The image beam B can provide light (such as ultraviolet rays) that can cure the light-sensitive material 1912, but the wavelength of the image beam B is not limited as long as it can cure the light-sensitive material 1912. The elevating stage 1930 has a printing area 1932 and is suitable for moving in the forming groove 1910. In addition, the three-dimensional printing device 1900a in this application example embodiment further includes a controller (not shown) and an input interface (not shown). The controller is electrically connected to the projection device 1920, the lifting platform 1930, and the input interface. The user can input the three-dimensional solid model of the three-dimensional printing object OB through an input interface and computer-aided design (Computer Aided Design, abbreviated as: CAD) or animation modeling software. Specifically, the input interface may be a mouse, a keyboard, a touch device, or another interface that enables a user to input a three-dimensional solid model of the three-dimensional printing object OB. The controller controls the operation mode of the lifting stage 1930 and the image beam B according to the three-dimensional solid model. Specifically, the controller may be a calculator, a microprocessor (Micro Controller Unit (abbreviated as: MCU)), a central processing unit (Central Processing Unit (abbreviated as: CPU)), or other programmable controller (Microprocessor ), Digital Signal Processor (DSP), Programmable Controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (Programmable Logic Device) For: 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 of the imaging displacement module 1940 is not limited to this.

Next, the three-dimensional printing process of light curing molding is introduced. The process is as follows: First, use computer aided design (CAD) to design a three-dimensional solid model, and use a discrete program to slice the three-dimensional solid model. Furthermore, multiple hierarchical scanning paths are obtained. 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 FIG. 19A that the printing area 1932 is immersed in the light-sensitive material 1912, and the image beam B is irradiated to a part of the light-sensitive material 1912 according to the scanning path of the first slicing layer. This part of the light-sensitive material 1912 is cured by photopolymerization. One section of the three-dimensional printed object OB is generated, and then a first cured layer is attached to the printing area 1932. After that, the lifting stage 1930 moves down a little distance, and the first solidified layer originally formed corresponds to a little downward movement, 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 placed on the first solidified layer. Cover another layer of light-sensitive material 1912, and then precisely control the image beam B according to the scanning path of the second slice layer, so that the image beam B is irradiated to the surface of the other layer of light-sensitive material 1912 according to the scanning path of the second slice layer, thereby obtaining a second layer After the solidified layer is continuously produced in multiple layers according to such a pattern, a three-dimensional printing object OB as shown in FIG. 19C can be formed. It should be noted that the shape of the three-dimensional printing object OB shown in FIG. 19C is merely an example, and the shape of the three-dimensional printing object OB is not limited thereto.

Please refer to FIG. 19B. FIG. 19B is a schematic diagram of another three-dimensional printing apparatus using the imaging displacement module of the above embodiment of the present invention. Please refer to FIG. 19B first. The three-dimensional printing apparatus 1900b shown in FIG. 19B is similar to that shown in FIG. 19A. The main difference between the three-dimensional printing device 1900a shown is that the material of the forming groove 1910 includes a transparent material or a light-transmitting material, and the lifting stage 1930 and the projection device 1920 are disposed on opposite sides of the forming groove 1910, respectively, of which FIG. 19B The three-dimensional printing device 1900b is, for example, a pull-up type three-dimensional printing device 1900b. Since the material of the molding groove 1910 includes a transparent material or a light-transmitting material, the image beam B can illuminate the light-sensitive material 1912 through the molding groove 1910. When performing three-dimensional printing, the image beam B is irradiated to a portion of the light-sensitive material 1912 according to the scanning path of the first slicing layer. This portion of the light-sensitive material 1912 undergoes photopolymerization and solidifies to generate one of the sections of the three-dimensional printed object OB , And then the first cured layer is attached to the printing area 1932. After that, the lifting stage 1930 is moved upward a little distance, and the originally formed first cured layer is moved upward a little distance, and the lower surface of the originally formed first cured layer can be used as a bearing surface, so that the lower part of the first cured layer The surface is covered with another layer of light-sensitive material 1912, and the image beam B is precisely controlled according to the scanning path of the second slice layer, so that the image beam B is irradiated to the surface of the other layer of light-sensitive material 1912 according to the scanning path of the second slice layer, and then a second After the solidified layer is continuously produced in multiple layers according to such a pattern, a three-dimensional printing object OB as shown in FIG. 19C can be formed.

Please refer to FIGS. 19A and 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 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 FIGS. 19A and 19B are the positions where the image beam B is projected at a certain time; and the dotted lines shown in FIGS. 19A and 19B are the images. The position where the image beam B is projected at another moment of the beam B. The detailed operation method of the imaging displacement module 1940 can be obtained from the description of the foregoing embodiments with sufficient teaching, suggestions, and implementation description, and will not be repeated here. Therefore, since the three-dimensional printing devices 1900a and 1900b of this application example embodiment have the imaging displacement module 1940 mentioned in any of the foregoing 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 can obtain higher resolution when curing the light-sensitive material 1912, so that the three-dimensional printing object OB has better surface accuracy.

In summary, in the light path adjustment structure of the exemplary embodiment of the present invention, since the first spring and the second spring are respectively connected to the first region and the second region at the diagonal positions of the rotating base, the rotating base passes through the above The elastic force between the springs rotates. 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 is changed by the optical path adjustment structure of the embodiment of the present invention, the three-dimensional printing device applying the optical path adjustment structure of the embodiment of the present invention can increase the pixels of the image frame formed by the image beam, and further make the three-dimensional array The three-dimensional printed objects printed by the printing device have better surface accuracy.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

100, 200‧‧‧ optical devices
110, 210‧‧‧ lighting system
112, 212‧‧‧light source
114, 214‧‧‧beams
114a, 214a, 500‧‧‧ sub-images
116, 216‧‧‧ color wheel
117, 217‧‧‧light beam
118, 218‧‧‧ lens group
119‧‧‧ Internal total reflection 稜鏡
120‧‧‧Digital Micromirror Device
130, 230‧‧‧ projection lens
140‧‧‧Vibration mechanism
219‧‧‧ 稜鏡
220‧‧‧Reflective light valve
240, 1000a, 1000b, 1000c, 1000d, 1000e, 1940‧‧‧ imaging displacement module
242, 246‧‧‧The first vibration mechanism
242a, 244a, 322‧‧‧Optical Element Division
244‧‧‧Second vibration mechanism
240‧‧‧ imaging displacement module
410, 1100‧‧‧bearing base
412‧‧‧magnetic material holder
414a, 414b, M1, M2, M3, M4, M5, M6‧‧‧ magnetic materials
420, 1200‧‧‧Swivel base
422‧‧‧Optical Element Division
424‧‧‧bearing seat
426, C1, C2, C3, C4, C5, C6‧‧‧ Coil modules
426a‧‧‧coil seat
426b‧‧‧coil
428‧‧‧Shaft
430‧‧‧ axis
432‧‧‧hole
400‧‧‧screen
1110‧‧‧ the first bearing frame
1120‧‧‧Second loading frame
1300‧‧‧Elastic piece
1310‧‧‧ the first pair of elastic members
1311‧‧‧First elastic member
1312‧‧‧Second elastic member
1320‧‧‧Second elastic pair
1400‧‧‧actuating assembly
1410‧‧‧First Actuator
1420‧‧‧Second Actuating Assembly
1500‧‧‧Optical Element Division
1610‧‧‧First shaft
1620‧‧‧Second shaft
1900a, 1900b‧‧‧3D printing device
1910‧‧‧Forming groove
1912‧‧‧ Light Sensitive Materials
1920‧‧‧ projection device
1930‧‧‧ Lifting platform
1932‧‧‧Printing Area
X‧‧‧ first direction
Y‧‧‧ second direction
XY1‧‧‧third direction
XY2‧‧‧Fourth direction
Z‧‧‧ fifth direction
X ', Y', X'Y'1, X'Y'2, X ", Y" ‧‧‧ directions
S‧‧‧ reference plane
w‧‧‧ width
NW‧‧‧Neck width
t‧‧‧ thickness
B‧‧‧Image Beam
OB‧‧‧3D Printing Object

FIG. 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 illustrates an imaging schematic diagram of an optical device according to an embodiment of the 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 of the embodiment of FIG. 4 along the D-D dashed line. Fig. 6 is a cross-sectional side view of the embodiment of Fig. 4 in the direction of the dashed line A-A. 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 of the embodiment of FIG. 7 along the D-D dashed line. FIG. 9 is a cross-sectional side view taken along the line A-A of FIG. 7 according to the present invention. FIG. 10A, FIG. 11A, and FIG. 12A are schematic structural diagrams of imaging displacement modules according to different embodiments of the present invention, respectively. FIG. 10B, FIG. 11B, and FIG. 12B are top views of the imaging displacement module according to the embodiments of FIG. 10A, FIG. 11A, and FIG. 12A, respectively. 10C, FIG. 11C, and FIG. 12C are cross-sectional side views of the imaging displacement module according to the embodiments of FIG. 10A, FIG. 11A, and FIG. 12A, respectively. FIG. 13A is a schematic diagram illustrating a moving direction of a child image according to an embodiment of the present invention. FIG. 13B and FIG. 13C are schematic diagrams showing the imaging displacement results of the child images in the embodiment of FIG. 13A. 14A is a schematic diagram illustrating a moving direction and an imaging position of a child 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 in a frame time. FIG. 15 is a schematic structural perspective view of an imaging displacement module according to another embodiment of the present invention. 16A is a schematic diagram illustrating a moving direction of a child image according to another embodiment of the present invention. FIG. 16B is a schematic diagram illustrating a sub-image imaging position of the embodiment in FIG. 16A. FIG. 17A is a schematic perspective view of an imaging displacement module applied to the inside of a projection lens according to an embodiment of the present invention. FIG. 17B is a schematic perspective view of an imaging displacement module applied to the inside of a projection lens according to another embodiment of the present invention. FIG. 18A is a schematic perspective view showing the structure of an imaging displacement module according to an embodiment of the present invention. FIG. 18B is a schematic structural perspective view of a first elastic member of the imaging displacement module in the embodiment of FIG. 18A. FIG. 18C is a diagram 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 illustrates the relationship between the amplitude and time of the first elastic member. 19A and 19B are schematic diagrams of different three-dimensional printing apparatuses to which the imaging displacement module of any one of the above embodiments of the present invention is applied, respectively. FIG. 19C is a schematic diagram of a three-dimensional printing object three-dimensionally printed by different three-dimensional printing devices of FIG. 19A or 19B.

1000a‧‧‧ imaging displacement module

1100‧‧‧bearing base

1110‧‧‧ the first bearing frame

1120‧‧‧Second loading frame

1200‧‧‧Swivel base

1300‧‧‧Elastic piece

1310‧‧‧ the first pair of elastic members

1320‧‧‧Second elastic pair

1400‧‧‧actuating assembly

1410‧‧‧First Actuator

1420‧‧‧Second Actuating Assembly

1500‧‧‧Optical Element Division

1610‧‧‧First shaft

1620‧‧‧Second shaft

M1 ~ M4‧‧‧ Magnetic material

C1 ~ C3‧‧‧ Coil Module

X‧‧‧ first direction

Y‧‧‧ second direction

Claims (10)

An optical path adjusting mechanism includes: a rotating base provided with a first area and a second area at diagonal positions; an optical element provided in the rotating base; and a coil surrounding the periphery of the rotating base A first spring, one end of which is connected to the first region of the rotating base; and a second spring, one end of which is connected to the second region of the rotating base. The light path adjusting mechanism according to item 1 of the scope of patent application, wherein the first spring is provided with a first plane between the one end and the other end, and the second spring is provided with a second plane between the one end and the other end And the first plane of the first spring is not parallel to the second plane of the second spring. The light path adjusting mechanism according to item 1 of the scope of patent application, wherein the rotating base and the optical element are integrally formed. An optical path adjustment mechanism includes: a base; a frame provided with a first region and a second region at diagonal positions; an optical element provided in the frame; a first spring provided with a first end And a second end, the first end is connected to the first region of the frame, the second end is connected to one end of the base, and the first spring is provided with a first between the first end and the second end A plane; and A second spring is provided with a third end and a fourth end, the third end is connected to the second region of the frame, the fourth end is connected to the other end of the base, and the second spring is in the third A second plane is disposed between the end and the fourth end. The light path adjusting mechanism according to item 4 of the scope of patent application, wherein the frame and the optical element are integrally formed. The light path adjusting mechanism according to any one of claims 1 to 5, wherein the first spring is a thin metal and the second spring is a thin metal. The light path adjusting mechanism according to any one of claims 1 to 5, wherein the optical element includes a reflection sheet or a lens. The light path adjusting mechanism according to any one of claims 1 to 5 of the patent application scope can be used in an optical device, wherein the optical device further includes an internal total reflection chirp. The light path adjusting mechanism according to any one of claims 1 to 5 of the scope of patent application can be used in an optical device, wherein the optical device further includes a light valve, the light valve is perpendicular to the optical element. The light path adjusting mechanism according to any one of the claims 1 to 3 can be used in an optical device, wherein the optical device further includes a light valve, and the angle between the normal of the light valve and the rotation axis of the rotating base is about 45 degrees.