CN115963683A

CN115963683A - Imaging displacement module

Info

Publication number: CN115963683A
Application number: CN202310059447.5A
Authority: CN
Inventors: 林维赐; 陈昭舜; 廖洽成; 张语宸; 蔡建兴
Original assignee: Young Optics Inc
Current assignee: Young Optics Inc
Priority date: 2015-01-19
Filing date: 2015-12-04
Publication date: 2023-04-14
Also published as: TWI826750B; TWI713722B; TWI584045B; TW201627745A; TW201723632A; TW201723631A; TW202115480A; CN105807385A; TWI613503B

Abstract

An imaging displacement module. The invention provides an optical path adjusting mechanism which comprises a rotating base, an optical element, a bearing base, a first elastic piece pair and a first actuating element. The optical element is arranged in the rotating base. The bearing base comprises a first bearing frame. The first bearing frame is coupled to the rotating base through the first elastic piece pair. The first actuating element comprises a magnetic material and a coil module. The coil module surrounds the optical element of the rotating base.

Description

Imaging displacement module

Technical Field

The present disclosure relates to displacement imaging modules, and particularly to an optical path adjusting mechanism.

Background

A general rear projection display product mainly generates an image by an optical engine and projects the image on a screen. In order to make the resolution of the image projected on the screen by the optical engine higher, the optical engine needs to use a display element with higher resolution. In addition, the current ultra-high resolution lcd can provide image resolution of 3840 × 2160 and 4096 × 2160. In contrast, the resolution provided by the current high definition (Full HD) rear projection display products is not in line with the market demand, so the rear projection display products need higher resolution to meet the market demand. However, since the cost of the display device with higher resolution is higher, it is a problem to be solved how to achieve high resolution image effect by using the light valve with low resolution pixels (pixels) to improve the manufacturing yield of the display device and reduce the cost.

Disclosure of Invention

The invention provides an optical path adjusting mechanism, comprising: rotating the base; the optical element is arranged in the rotating base; the bearing base comprises a first bearing frame; a first elastic member pair, wherein the first bearing frame is coupled to the rotating base through the first elastic member pair; and the first actuating element comprises a magnetic material and a coil module, and the coil module surrounds the optical element of the rotating base.

The invention provides an optical path adjusting mechanism, comprising: rotating the base; the optical element is arranged in the rotating base; the bearing base comprises a first bearing frame and a second bearing frame surrounding the first bearing frame; a first elastic element pair, wherein the first bearing frame is coupled to the rotating base through the first elastic element pair, and the first elastic element pair comprises a first spring; a second elastic member pair, wherein the second frame is coupled to the first frame via the second elastic member pair, and the second elastic member pair includes a second spring; and a first actuating element and a second actuating element, such that the rotating base rotates along the first rotating shaft and the second rotating shaft, wherein the first spring is provided with a first end and a second end, the first end is connected with the first area of the frame, the second end is connected with one end of the base, and the first spring is provided with a first plane between the first end and the second end, and wherein the second spring is provided with a third end and a fourth end, the third end is connected with the second area of the frame, the fourth end is connected with the other end of the base, and the second spring is provided with a second plane between the third end and the fourth end.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a schematic 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 imaging diagram of an optical device according to an embodiment of the present invention;

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

FIG. 5 is a cross-sectional side view of the embodiment of FIG. 4 taken along the line D-D;

FIG. 6 isbase:Sub>A cross-sectional side view of the embodiment of FIG. 4 taken along line A-A of the present invention;

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

FIG. 8 is a cross-sectional side view of the embodiment of FIG. 7 taken along the line D-D;

FIG. 9 isbase:Sub>A cross-sectional side view of the embodiment of FIG. 7 taken along line A-A of the present invention;

FIG. 10A is a perspective view of an imaging shift module according to another embodiment of the present invention;

FIG. 10B shows a top view of the embodiment of FIG. 10A;

FIG. 10C shows a cross-sectional side view of the embodiment of FIG. 10A;

FIG. 11A is a perspective view of an imaging shift module according to another embodiment of the present invention;

FIG. 11B illustrates 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;

FIG. 12A is a perspective view of an imaging shift 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;

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

FIGS. 13B and 13C are schematic diagrams illustrating the imaging displacement results of the subimages of the embodiment of FIG. 13A;

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

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

FIG. 15 is a perspective view of an imaging shift module according to another embodiment of the present invention;

FIG. 16A is a schematic diagram illustrating moving directions of subimages according to another embodiment of the present invention;

FIG. 16B is a schematic diagram illustrating the imaging positions of the subimages of the embodiment of FIG. 16A;

fig. 17A is a schematic perspective view illustrating an imaging shift module applied to a projection lens according to an embodiment of the invention;

FIG. 17B is a schematic perspective view illustrating an imaging shift module applied to a projection lens according to another embodiment of the present invention;

fig. 18A is a schematic structural perspective view of an imaging shift module according to an embodiment of the invention;

FIG. 18B is a perspective view of the first elastic member of the imaging displacement module of FIG. 18A;

FIG. 18C is a graph showing amplitude versus time for the first spring of the imaging displacement module of the embodiment of FIG. 18A;

FIG. 18D is a graph showing the relationship between the amplitude and the time of the signal for driving the first elastic member;

FIGS. 19A and 19B are schematic views of different three-dimensional printing devices to which an imaging displacement module according to any of the above embodiments of the invention may be applied;

fig. 19C is a schematic diagram illustrating a three-dimensional printed object three-dimensionally printed by the different three-dimensional printing apparatus of fig. 19A or 19B.

Description of the reference numerals:

100. 200: an optical device; 430: an axis;

110. 210: an illumination system; 432: a hole;

112. 212, and (3): a light source; 1320: a second pair of elastic members;

114. 214: a light beam; 1400: an actuation assembly;

114a, 214a, 500: a sub-image; 1410: a first actuation assembly;

116. 216: a color wheel; 1420: a second actuating assembly;

117. 217: a light collection column; 1610: a first rotating shaft;

118. 218: a lens group; 1620: a second rotating shaft;

119: an internal total reflection prism; 1900a, 1900b: a three-dimensional printing device;

120: a digital micromirror device; 1910: forming a groove;

130. 230: a projection lens; 1912: a photosensitive material;

140: a vibration mechanism; 1920: a projection device;

219: a prism; 1930: lifting the carrier;

220: a reflective light valve; 1932: a printing area;

240. 1000a, 1000b, 1000c, 1000d, 1000e, X: a first direction;

1940: an imaging displacement module; y: a second direction;

410. 1100: a load-bearing base; XY1: a third direction;

412: a magnetic material holder; XY2: a fourth direction;

414a, 414b, M1, M2, M3, M4, M5, Z: a fifth direction;

m6: : a magnetic material; XY3: a sixth direction;

420. 1200: rotating the base; b: an image beam;

422. 1500: an optical element section; x ', Y', X 'Y'1, X 'Y'2, X ", Y": square block

424: a bearing seat; the direction of the solution is as follows;

426. 427a, 427b, C1, C2, C3, C4, S: a reference plane;

c5, C6: a coil module; w: a width;

426a: a coil holder; NW: a neck width;

426b: a coil; OB: three-dimensionally printing an object;

428: a rotating shaft; t: and (4) thickness.

Detailed Description

The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of various embodiments, which is to be read in connection with the accompanying drawings. Directional phrases used in the following embodiments, such as "upper," "lower," "front," "rear," "left," "right," etc., refer only to the orientation of the appended figures. Accordingly, the directional terminology used is intended to be illustrative and not limiting.

In an exemplary embodiment of the invention, the bearing base of the imaging displacement module is adapted to control the rotating base to vibrate back and forth within an angle, so that the sub-image moves the imaging position in the horizontal direction by a first distance and the imaging position in the vertical direction by a second distance at the same time. Alternatively, the carrying base of the imaging displacement module is adapted to control the biaxial rotation of the rotating base relative to the reference plane to move the sub-images a distance in one of a plurality of moving directions. Therefore, the optical device according to the exemplary embodiment of the present invention can be used to project an image with relatively high resolution by using the reflective light valve with relatively low resolution.

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 dmd 120, a projection lens 130, and a vibrating mechanism 140. The illumination system 110 has a light source 112 adapted to provide a light beam 114, and the dmd 120 is disposed on a transmission path of the light beam 114. The digital micro-mirror 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 the sub-images 114a, and the dmd 120 is located between the illumination system 110 and the projection lens 130. In addition, the vibration mechanism 140 is disposed between the dmd 120 and the projection lens 130 and located on the transmission path of the sub-images 114a.

In the optical device 100, a light beam 114 provided by a light source 112 passes through a color wheel (color wheel) 116, a light integration rod (light integration rod) 117, a lens set 118 and a total internal reflection Prism (TIR Prism) 119 in sequence. The tir prism 119 then reflects the light beam 114 to the dmd 120. At this time, the dmd 120 converts the light beam 114 into a plurality of sub-images 114a, and the sub-images 114a pass through the tir prism 119 and the vibrating mechanism 140 in sequence, and project the sub-images 114a onto the screen 400 through the projection lens 130.

When the sub-images 114a pass through the vibration mechanism 140, the vibration mechanism 140 changes the transmission path of some of the sub-images 114a. That is, the sub-images 114a passing through the vibration mechanism 140 are projected onto a first position (not shown) on the screen 400, and the sub-images 114a passing through the vibration mechanism 140 are projected onto a second position (not shown) on the screen 400 for another part of the time, wherein the first position and the second position are different by a fixed distance in the horizontal direction (X axis) or the vertical direction (Z axis). Since the vibration mechanism 140 can move the imaging position of the sub-images 114a by a fixed distance in the horizontal direction or the vertical direction, the horizontal resolution or the 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 present invention. Referring to fig. 2, the optical device 200 of the present embodiment includes an illumination system 210, a reflective light valve 220, a projection lens 230, an image shifting module 240, and a screen 400. Therein, the illumination system 210 has a light source 212 adapted to provide a light beam 214, and a reflective light valve 220 is disposed in 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 the 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 imaging diagram of an optical device according to an embodiment of the present invention. As the sub-images 214a pass through the imaging shift module 240, the imaging shift module 240 alters the transmission paths of some of the sub-images 214a. That is, the sub-images 214a passing through the image shifting module 240 are projected onto a first position (solid line square) on the screen 400, and the sub-images 214a passing through the image shifting module 240 are projected onto a second position (dotted line square) on the screen 400 during another part of the time, so that the horizontal resolution and the vertical resolution of the image can be improved at the same time. The illumination system 210 described above is, for example, a telecentric illumination system or a non-telecentric illumination system. In addition, the reflective light valve 220 is, for example, a digital micro-mirror device or a single crystal silicon reflective liquid crystal panel, and in this embodiment, the digital micro-mirror device is taken as an example. The light beam 214 provided by the light source 212 passes through the color wheel 216, the light collecting pillar 217, the lens set 218 and the prism 219, and the prism 219 reflects the light beam 214 to the reflective light valve 220. At this time, the reflective light valve 220 converts the light beam 214 into a plurality of sub-images 214a, and the sub-images 214a pass through the image shift module 240 and the prism 219, or pass through the prism 219 and the image shift module 240 in sequence, and project the sub-images 214a onto the screen 400 through the projection lens 230. It should be noted that if different color LEDs are used as the light source 212, the color wheel 216 may be omitted. Further, a microlens array (lens array) may be used instead of the light collecting pillar 217 for light uniformization.

Fig. 4 isbase:Sub>A schematic structural diagram of an imaging displacement module according to an embodiment of the present invention, fig. 5 isbase:Sub>A side view of the embodiment of the present invention shown in fig. 4 taken along the direction of the dotted line D-D, and fig. 6 isbase:Sub>A side view of the embodiment of the present invention shown in fig. 4 taken along the direction of the dotted linebase:Sub>A-base:Sub>A. Referring to fig. 4, fig. 5 and fig. 6, in the present 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 carrying base 410, and the carrying 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 component 422, and the optical component 422 is located on the transmission path of the sub-images 214a (shown in fig. 2). Moreover, when the rotating base 420 oscillates back and forth within the specific angle θ, the optical element 422 can move the image position of the sub-images 214a by a distance on an axis 430. In other words, the optical element section 422 of the imaging shift module 240 (shown in fig. 4) can move the imaging positions of the sub-images 214a by a distance in the horizontal direction (X-axis) and in the vertical direction (Z-axis) at the same time.

In the imaging displacement module 240, the carrying base 410 includes, for example, a magnetic material seat 412, two

magnetic materials

414a and 414b, and an induction module (not shown). The rotating base 420 includes, for example, an optical element portion 422, a bearing seat 424, a coil module 426, and a rotating shaft 428. The shaft 428 is pivotally connected to a base (not shown) through an aperture 432 at its upper and lower ends. In addition, the induction module is disposed on the supporting base 410, 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 the specific angle θ through the coil module 426. More specifically, the carrying base 410 has

magnetic materials

414a and 414b therein, for example, and the induction module controls the rotating base 420 to vibrate back and forth within a specific angle θ by changing the magnetism of the coil module 426 to generate at least one of an attractive force and a repulsive force between the coil module 426 and the

magnetic materials

414a and 414b, so as to change the imaging position of the sub-images 214a.

In one 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 disposed on the base, and the sensor is disposed on the supporting base 410. The inductor is used for sensing the swing amplitude of the rotating shaft 428 of the rotating base 420, when the rotating shaft 428 swings to a certain amplitude toward the magnetic material 414a, the circuit board will change the magnetism of the coil module 426, so as to generate a repulsive force between the coil module 426 and the magnetic material 414a (generate an attractive force between the coil module 426 and the magnetic material 414 b), and further, the coil module 426 is away from the magnetic material 414a. When the rotating shaft 428 swings to a certain extent towards the magnetic material 414b, the circuit board changes the magnetism of the coil module 426, so that a repulsive force is generated between the coil module 426 and the magnetic material 414b (an attractive force is generated between the coil module 426 and the magnetic material 414 a), and the coil module 426 is further away from the magnetic material 414b. By bringing the coil module 426 close to/away from or far from/close to the magnetic materials 414a/414b, the rotating base 420 can be vibrated back and forth within the specific angle θ, thereby changing the imaging position of the sub-images 214a.

In the imaging displacement module 240, the coil module 426 includes, for example, a coil holder 426a and a coil 426b. The coil 426b is wound around the coil holder 426a, and the circuit board changes the magnetic property of the coil module 426 by changing the direction of the current in the coil 426b. It should be noted that, in the present 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 rotation shaft 428 of the rotation base 420 and the optical element portion 422 can be manufactured separately, and then the optical element portion 422 and the rotation shaft 428 can be assembled together. In addition, the optical element portion 420 may be a reflective sheet or a lens.

Fig. 7 isbase:Sub>A schematic structural diagram of an imaging displacement module according to another embodiment of the present invention, fig. 8 isbase:Sub>A side view of the embodiment of the present invention taken along the direction of dashed line D-D, and fig. 9 isbase:Sub>A side view of the embodiment of the present invention taken along the direction of dashed linebase:Sub>A-base:Sub>A. The difference from the embodiment shown in fig. 4, 5 and 6 is that the upper and lower ends of the rotating shaft 428 are respectively arranged horizontally and vertically in fig. 4, and the upper and lower ends of the rotating shaft 428 are arranged horizontally in the present embodiment. Further, the present embodiment divides the coil block into two

parts

427a, 427b. When the shaft 428 swings to a certain extent toward the magnetic material 414a, the circuit board changes the magnetism of the

coil modules

427a, 427b, so that a repulsive force is generated between the coil module 427a and the magnetic material 414a, and an attractive force is generated between the coil module 427b and the magnetic material 414b, thereby separating the coil module 427a from the magnetic material 414a. When the rotating shaft 428 swings to a certain extent towards the magnetic material 414b, the circuit board changes 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 an attractive force is generated between the coil module 427a and the magnetic material 414a, thereby separating the coil module 427b from the magnetic material 414b. By bringing the

coil blocks

427a, 427b close to/away from or close to the magnetic material 414a/414b, the rotating base 420 can be oscillated back and forth within the specified angle θ to change the imaging position of the sub-images 214a.

Fig. 10A is a schematic perspective view illustrating an imaging shift module according to another embodiment of the invention. Fig. 10B shows a top view of the embodiment of fig. 10A. Fig. 10C shows a cross-sectional side view of the embodiment of fig. 10A. Referring to fig. 10A, fig. 10B and fig. 10C, in the present embodiment, the imaging displacement module 1000A includes a carrying base 1100 and a rotating base 1200. The spin base 1200 is coupled to the load base 1100 through at least one elastic member 1300. The load base 1100 is adapted to control biaxial rotation of the rotating base 1200 with respect to the reference plane S. In the present embodiment, the two axes of the reference plane S are, for example, a first rotation axis 1610 in the first direction X and a 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 a reference plane S. The loading base 1100 and the rotating base 1200 are symmetrical with respect to the first rotating shaft 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 the present embodiment, the imaging shift module 1000a further includes an optical element section 1500. The optical element section 1500 is provided on the rotating base 1200. The optical element section 1500 includes a mirror or a lens.

In the present embodiment, the at least one elastic element 1300 includes a first elastic element pair 1310 and a second elastic element pair 1320. The carrier base 1100 includes a first carrier frame 1110 and a second carrier frame 1120, and the first carrier frame 1110 is disposed on the second carrier frame 1120. The second bezel 1120 surrounds the first bezel 1110. The first bezel 1110 is coupled to the spin base 1200 through a first pair of elastic members 1310, and the second bezel 1120 is coupled to the first bezel 1110 through a second pair of elastic members 1320. The first elastic member pair 1310 is disposed at opposite sides of the first carrier frame 1110 along the second rotation axis 1620 of the biaxial, and the second elastic member pair 1320 is disposed at opposite sides of the second carrier frame 1120 along the first rotation axis 1610 of the biaxial.

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

In this embodiment, imaging displacement module 1000a also includes a plurality of actuating assemblies 1400. The actuating assemblies 1400 are disposed on at least one of the carrier base 1100 and the rotatable base 1200. The carrier base 1100 is used by the actuating assemblies 1400 to control the biaxial rotation of the rotating base 1200 relative to the reference plane S.

More specifically, in the present embodiment, the plurality of actuating assemblies 1400 includes a first actuating assembly 1410 and a second actuating assembly 1420. The first actuating elements 1410 are disposed on the carrying base 1100 and arranged along the second direction Y. The susceptor 1100 controls the rotation of the spin base 1200 relative to the first rotation axis 1610 by using the second actuating component 1410, and at this time, the spin base 1200 and the first frame 1110 rotate relative to the second frame 1120 at the same time. On the other hand, the second actuating assemblies 1420 are disposed on the carrying base 1100, aligned along the first direction X. The supporting base 1100 controls the rotation of the rotating base 1200 relative to the second rotating shaft 1620 by using the second actuating assembly 1420, and at this time, the rotating base 1200 rotates relative to the first supporting frame 1110.

In the present embodiment, the first actuating assembly 1410 includes two magnetic materials M1 and M2 and one coil module C1. The magnetic materials M1 and M2 are disposed on the supporting base 1100 symmetrically to the first rotating shaft 1610. 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, M2. The second actuation assembly 1420 includes two magnetic materials M3, M4 and two coil modules C2, C3. The two magnetic materials M3 and M4 are symmetrically disposed on the supporting base 1100 through the second shaft 1620. The two coil modules C2 and C3 are symmetrically disposed on the optical element portion 1500 via the second rotating shaft 1620. The two coil modules C2, C3 are located between the two magnetic materials M3, M4. The magnetic materials M3, M4 and the coil modules C2, C3 are arranged along the first direction X. It should be noted that the total length of the coil used by the imaging displacement module 1000a of the present embodiment is the smallest, and the moment of inertia thereof is the smallest.

Specifically, in the present embodiment, the induction module (not shown) controls the biaxial rotation of the spin base 1200 with respect to the reference plane S by changing the magnetism of the coil modules C1, C2, C3. The sensing module (not shown) includes a circuit board and a sensor. The sensor is used for sensing 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 by a certain amplitude, the circuit board changes the magnetic property of the coil modules C1, C2, and C3 by changing the current direction of the coil modules C1, C2, and C3. Therefore, repulsive or attractive forces are generated between the coil modules C1, C2, C3 and the magnetic materials M1, M2, M3, M4, so that the coil modules C1, C2, C3 are far away from or close to the magnetic materials M1, M2, M3, M4, thereby controlling the biaxial rotation of the rotating base 1200 with respect to the reference plane S.

In the present embodiment, the actuating elements include magnetic material and coils. In other embodiments, the actuating components may also be a piezoelectric material or a stepping motor to achieve the actuating effect as in the present embodiment, which is not limited by the invention.

It should be noted that the following embodiments follow the reference numerals and parts of the contents of the foregoing embodiments, wherein the same reference numerals are used to indicate the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

Fig. 11A is a schematic structural perspective view of an imaging shift module according to another embodiment of the invention. FIG. 11B illustrates a top view of the imaging displacement module of the embodiment of FIG. 11A. Figure 11C shows a cross-sectional side view of the imaging displacement module of the embodiment of figure 11A. Referring to fig. 11A, fig. 11B and fig. 11C, the main difference between the imaging shift module 1000B and the imaging shift module 1000a of the present embodiment is: the coil block C4 in the second actuating assembly 1420 of the present embodiment is disposed on the rotary base 1200, and the coil block C4 surrounds the optical element section 1500 of the rotary base 1200. It should be noted that the number of coils used in the present embodiment is small, and the manufacturing process is relatively simple.

Fig. 12A is a schematic perspective view illustrating an imaging shift module according to another embodiment of the invention. Fig. 12B illustrates a top view of the imaging displacement module of the embodiment of fig. 12A. Figure 12C shows a cross-sectional side view of the imaging displacement module of the embodiment of figure 12A. Referring to fig. 12A, fig. 12B and fig. 12C, the main differences between the imaging shift module 1000C and the imaging shift module 1000a of the present embodiment are as follows. In the present embodiment, the carrying base 1100 and the rotating base 1200 are symmetrical with respect to the second rotating shaft 1620 in addition to the first rotating shaft 1610. In this embodiment, the first elastic member pair 1310 is disposed on two opposite sides of the second bezel 1120 along the first rotation axis 1610, and the second elastic member pair 1320 is disposed on two opposite sides of the first bezel 1110 along the second rotation axis 1620. In addition, in the present embodiment, the first actuating assembly 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 shaft 1610 and disposed on the carrying base 1100. The coil modules C5 and C6 are symmetrical to the first rotating shaft 1610 and 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 Y, and the coil modules C5 and C6 are located between the magnetic materials M5 and M6.

In the present embodiment, the first actuating element 1410 and the second actuating element 1420 are respectively disposed symmetrically to the first rotating shaft 1610 and the second rotating shaft 1620. That is, the first actuating element 1410 and the second actuating element 1420 of the imaging shift module 1000c of the present embodiment have high symmetry, and the motors can set the same output force, so that the control is easier. Furthermore, first actuating element 1410 and second actuating element 1420 have a longer moment arm than the previous embodiments, and thus the amount of force required to actuate imaging displacement module 1000c is relatively small. In addition, since the distances between the four magnetic materials or the four coil modules are relatively long, the four magnetic materials or the four coil modules are less likely to interfere with each other relative to the aforementioned embodiment.

Fig. 13A is a schematic diagram illustrating a moving direction of sub-images according to an embodiment of the invention. Fig. 13B and 13C are schematic diagrams illustrating the imaging displacement results of the sub-images in the embodiment of fig. 13A. Referring to fig. 13A and fig. 13B, in an embodiment of the present invention, the image shifting module is applied to an optical device, and the image shifting module switches the image positions of the sub-images 500 to move the sub-images 500 a distance along one of the moving directions. The positions of the sub-images 500 are determined according to the rotation of the rotating base 1200. Specifically, in the present embodiment, when the rotation base 1200 rotates relative to one of the first rotation shaft 1610 or the second rotation shaft 1620, the positions of the sub-images 500 move a distance along one of a plurality of moving directions, such as the first direction X or the second direction Y, on the screen 400 of fig. 2. In this embodiment, this distance is about 0.7 times the pixel width. Therefore, the sub-images 500 can be swung from the original position (solid line square) to four different positions (dotted line square), in other words, the image resolution can be increased to the original quadruple image resolution. In another embodiment, referring to fig. 13C, when the rotating base 1200 rotates relative to the first rotating shaft 1610 and/or the second rotating shaft 1620, the sub-images 500 can move along a plurality of moving directions, such as one of the first direction X, the second direction Y, the third direction XY1, and the fourth direction XY 2. Further, when the rotating base 1200 rotates relative to the first rotating shaft 1610 and the second rotating shaft 1620 simultaneously, the sub-images 500 move a distance in a third direction XY1 or a fourth direction XY2, wherein the third direction XY1 and the fourth direction XY2 are between the first direction X and the second direction Y.

Fig. 14A is a schematic diagram illustrating the moving direction and the imaging position of the sub-image according to another embodiment of the present invention. FIG. 14B is a schematic diagram of the imaging positions of the sub-images of the rotating base in FIG. 14A during a frame time period. Referring to fig. 14A, in the present embodiment, when the rotation base rotates relative to one of the first rotation axis or the second rotation axis, the sub-images 500 move along one of the directions X 'or Y'. Further, when the rotation base rotates relative to the first rotation axis and the second rotation axis simultaneously, the sub-images 500 move a distance in one of the directions X 'Y'1 or X 'Y'2, wherein the directions X 'Y'1 and X 'Y'2 are between the directions X 'and Y'.

Referring to fig. 14A, when the rotation base rotates relative to at least one of the first rotation axis and the second rotation axis, the positions of the sub-images 500 are shifted along the directions X ', Y', X 'Y'1 and X 'Y' 2. Specifically, in the present embodiment, the distance that the sub-images 500 move in the direction X 'and the direction Y' is 1 pixel width, and the distance that the sub-images 500 move in the direction X 'Y'1 or the direction X 'Y'2 is about 1.4 pixel width.

In more detail, in fig. 14A and 14B, the numbers 1 to 9 respectively represent that the same sub-image 500 is located at different positions at different times. Numeral 1 represents a position where the sub-image 500 is not moved.

Reference numerals

3, 7 denote positions of the sub-image 500 shifted to the right or left in the direction X'. Reference numerals 5 and 9 denote positions of the sub-image 500 shifted downward or upward in the direction Y'.

Reference numerals

2, 6 denote positions of the sub-image 500 shifted in the direction X 'Y'1.

Reference numerals

4, 8 denote positions of the sub-image 500 shifted in the direction X 'Y' 2.

The reference numeral 1 in fig. 14B indicates that the sub-images 500 are at the position corresponding to the reference numeral 1 in fig. 14A in the time interval. Similarly, the numbers 2 to 9 in fig. 14B mean that the sub-images 500 are at the positions corresponding to the numbers 2 to 9 in fig. 14A in the respective different time intervals.

The vertical axis of fig. 14B corresponds to the sub-image 500 being movable in different directions (direction X 'and/or direction Y') during different time intervals. For example, when the number is 1, the values of the vertical axes corresponding to the directions X 'and Y' are both 0, which means that the sub-image 500 does not move in the directions X 'and Y'. When the number is 2, the vertical axis values in the direction X 'and the direction Y' are positive, which represents that the sub-image 500 moves from the position 1 to the position 2 between the direction X 'and the direction Y', i.e. the direction X 'Y'1. When the number is 3, the ordinate corresponding to the direction X ' is positive, and the ordinate corresponding to the direction Y ' is 0, which represents that the sub-image 500 moves from position 1 to position 3 in the direction X '. When the number is 4, 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 negative, which represents that the sub-image 500 moves from the position 1 to the position 4, which is the opposite direction of the direction X 'Y'2, where the vector of the direction X 'and the negative direction Y' is combined. The following reference numerals are analogized and will not be described herein. It should be noted that the sub-images 500 can be moved in one of the directions X ', Y', X 'Y'1 or X 'Y'2 by way of example only, and the invention is not limited thereto. In addition, the sub-image 500 (solid line square) can be moved to nine different positions (dotted line square) in fig. 14B, in other words, the image resolution can be increased to nine times the original image resolution.

Fig. 15 is a schematic perspective view illustrating an imaging shift module according to another embodiment of the invention. Referring to fig. 15, in the present embodiment, the main differences between the imaging shift module 1000d and the imaging shift module 1000b are: the first rotating shaft 1610 and the second rotating shaft 1620 have an included angle. For example, the included angle of the present embodiment is 45 degrees, that is, the first rotating shaft 1610 and the second rotating shaft 1620 are not limited to be perpendicular to each other in the exemplary embodiment of the present invention. In addition, the first elastic element pair 1310 is disposed on two opposite sides of the first frame 1110 along a sixth direction XY3, wherein the sixth direction XY3 is between the first direction X and the second direction Y.

Fig. 16A is a schematic diagram illustrating a moving direction of sub-images according to another embodiment of the invention. Fig. 16B is a schematic diagram illustrating the imaging positions of the sub-images in the embodiment of fig. 16A. Referring to fig. 16A, specifically, in the embodiment, when the rotation base rotates relative to one of the first rotation axis or the second rotation axis, the positions of the sub-images move a distance along the direction X "or the direction Y". In this embodiment, this distance is 1 pixel width along direction X "and about 1.1 pixel width along direction Y". Thus, the sub-images can be swung from the original position (solid line square) to four different positions (dotted line square), in other words, the image resolution can be increased to four times the original image resolution.

Fig. 17A is a schematic perspective view illustrating an imaging shift module applied to a projection lens according to an embodiment of the invention. Fig. 17B is a schematic perspective view illustrating an application of an imaging shift module to a projection lens according to another embodiment of the invention. Referring to fig. 17A and 17B, the image shift module of the embodiment of the invention may also be disposed inside the projection lens or in front of the projection lens, so as to increase the resolution of the projected image to four times of the original resolution.

Fig. 18A is a schematic structural perspective view of an imaging shift module according to an embodiment of the invention. Fig. 18B is a perspective view illustrating a first elastic member of the imaging displacement module of fig. 18A according to an embodiment of the invention. FIG. 18C is a graph illustrating the amplitude of the first elastic member of the imaging displacement module of FIG. 18A as a function of time. FIG. 18D is a graph showing the relationship between the amplitude and time of the signal for driving the first elastic member.

The imaging displacement module of fig. 18A can achieve sufficient teaching, suggestion and implementation description from the description of the foregoing embodiments. Therefore, only the reference numerals required for the following paragraphs are labeled in fig. 18A, and the description of the other parts is omitted. In addition, since the first pair of elastic members 1310 is similar to the second pair of elastic members 1320 in the present embodiment, the following paragraphs are illustrated with the first pair of elastic members 1310, and so on for the second pair of elastic members 1320.

Referring to fig. 18A, for example, in the present embodiment, the first elastic element pair 1310 includes a first elastic element 1311 and a second elastic element 1312. The first elastic member 1311 and the second elastic member 1312 are disposed along the first rotation axis 1610 of the imaging shift module 1000e of the present embodiment in a perpendicular manner, so that the first rotation axis 1610 passes through the axis of the optical element portion 1500.

In general, when the amplitude of the first elastic member 1311 is switched from one direction to another, the time required for the amplitude switching process is referred to as a switching time (transition time) T. The length of the transition time T determines the display quality of the sub-picture. Since the transition 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 be all factors affecting the transition time T.

Please refer to fig. 18B. In light of the above, the transition time T is related to the structural parameters of the first elastic member 1311. In the present 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 one of the reasons for the influence of the transition 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 t is designed such that the natural frequency of the first elastic member 1311 is at least greater than 90Hz. 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 transition time T, factors that affect the transition time T include the vibration mode of the first elastic member 1311. Referring to fig. 18C and fig. 18D, in the present 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 changes from one direction to another, the driving signal waveform thereof is as shown in fig. 18D. The drive signal waveform is not limited to the square-wave drive signal shown in fig. 18D, and may be a sine-wave drive signal waveform. The switching time T is less than 1 millisecond, preferably ranging from 1 to 0.05 millisecond, so that the optical device can provide good display quality.

In order to better understand the practical application of the imaging shift module mentioned in the foregoing embodiments, the following paragraphs present a plurality of application example embodiments. Fig. 19A and 19B are schematic diagrams illustrating different three-dimensional printing apparatuses to which the imaging shift module according to any one of the above embodiments of the present invention is applied, and fig. 19C is a schematic diagram illustrating a three-dimensional printed object three-dimensionally printed by the different three-dimensional printing apparatuses of fig. 19A or 19B. In the exemplary embodiment, the three-dimensional printing apparatus gradually manufactures three-dimensional objects by using a multi-layer cross section of a three-dimensional model constructed by Computer Aided Design (CAD) or animation modeling software. Referring to fig. 19A, in the present application exemplary embodiment, a three-dimensional printing technology adopted by a three-dimensional printing apparatus 1900a is, for example, a Stereo Stereolithography (SLA), where the three-dimensional printing apparatus 1900a includes a molding groove 1910, a projection device 1920, an elevating platform 1930, and an imaging displacement module 1940 of any one of the foregoing embodiments, where the three-dimensional printing apparatus 1900a is used to form a three-dimensional printed object OB, and the three-dimensional printing apparatus 1900a in fig. 19A is, for example, a sunken three-dimensional printing apparatus 1900a.

The following paragraphs describe each component in the three-dimensional printing apparatus 1900a in the present application example embodiment in detail.

The molding groove 1910 is used for accommodating a photosensitive material 1912, wherein the photosensitive material 1912 is cured by photo-polymerization reaction under irradiation of a light beam with a specific wavelength. The projection apparatus 1920 includes a Light Emitting device, which may be a Light Emitting Diode (LED), a laser (laser) or other suitable Light Emitting device, and the Light Emitting device is adapted to emit an image beam B, wherein the image beam B can provide Light (for example, ultraviolet) in a wavelength band capable of curing the photosensitive material 1912, but the wavelength band of the image beam B is not limited thereto as long as the photosensitive material 1912 can be cured. An elevator stage 1930 has a print zone 1932 and is adapted to move within the molding slot 1910. In addition, the three-dimensional printing apparatus 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 elevating stage 1930 and the input interface, and a user can input a three-dimensional solid model of the three-dimensional printed object OB through the input interface and through Computer Aided Design (CAD) or animation modeling software. Specifically, the input interface may be a mouse, a keyboard, a touch device, or other interfaces that enable a user to input a three-dimensional solid model of the three-dimensional printed object OB. The controller controls the actuation modes 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 (MCU), a Central Processing Unit (CPU), or other Programmable Controller (Microprocessor), a Digital Signal Processor (DSP), a Programmable Controller, an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or the like. In the present exemplary embodiment, the image shift module 1940 is disposed outside the projection apparatus 1920, and the image shift module 1940 is disposed on the path of the image beam B, in other exemplary embodiments, the image shift module 1940 may be disposed inside the projection apparatus 1920, as long as the image shift module 1940 is disposed on the path of the image beam B, and the position of the image shift module 1940 is not limited thereto.

Next, a three-dimensional printing process of photo-curing molding is described, which comprises the following steps: firstly, a three-dimensional solid model is designed by using Computer Aided Design (CAD), and the three-dimensional solid model is sliced by using a discrete program, so as to obtain a plurality of layered scanning paths. Then, the movement of the image beam B and the elevating stage 1930 is precisely controlled according to the scanning path of each slice. As shown in fig. 19A, the printing area 1932 is immersed in the photosensitive material 1912, and the image beam B irradiates a portion of the photosensitive material 1912 according to a scanning path of the first cut layer, and the portion of the photosensitive material 1912 is cured by photopolymerization to generate one cross section of the three-dimensional printed object OB, so as to obtain a first cured layer attached on the printing area 1932. Then, the lifting carrier 1930 moves downward a little distance, and the originally formed first cured layer moves downward a little distance correspondingly, and the upper surface of the originally formed first cured layer can be used as a carrying surface, so that the first cured layer is covered with another layer of photosensitive material 1912, and then the image beam B is precisely controlled according to the scanning path of the second cut layer, so that the image beam B is irradiated onto the surface of the another layer of photosensitive material 1912 according to the scanning path of the second cut layer, so as to obtain a second cured layer, and after multiple layers are continuously manufactured according to such a mode, the three-dimensional printed object OB shown in fig. 19C can be formed. It should be noted that the shape of the three-dimensional printed object OB shown in fig. 19C is merely an example, and the shape of the three-dimensional printed object OB is not limited thereto.

Referring to fig. 19B and fig. 19B, a schematic diagram of another three-dimensional printing apparatus using the image shift module according to the above embodiment of the invention is shown, referring to fig. 19B, a three-dimensional printing apparatus 1900B shown in fig. 19B is similar to the three-dimensional printing apparatus 1900a shown in fig. 19A, and the main differences are: the material of the molding slot 1910 includes a transparent material or a light-transmitting material, and the lifting stage 1930 and the projection device 1920 are respectively disposed on two opposite sides of the molding slot 1910, where the three-dimensional printing apparatus 1900B in fig. 19B is, for example, a pull-up three-dimensional printing apparatus 1900B. Since the material of the molding groove 1910 includes a transparent material or a light-transmitting material, the image beam B may irradiate the photosensitive material 1912 through the molding groove 1910. When three-dimensional printing is performed, the image beam B irradiates a portion of the photosensitive material 1912 according to a scanning path of the first cut layer, and the portion of the photosensitive material 1912 is cured by photopolymerization to generate one cross section of the three-dimensional printed object OB, so that the first cured layer is attached to the printing area 1932. Then, the lifting stage 1930 moves upward a little distance, and the originally formed first cured layer moves upward a little distance correspondingly, and the lower surface of the originally formed first cured layer can be used as a carrying surface, so that the lower surface of the first cured layer covers another layer of photosensitive material 1912, and then the image light beam B is precisely controlled according to the scanning path of the second cut layer, so that the image light beam B is irradiated onto the surface of the another layer of photosensitive material 1912 according to the scanning path of the second cut layer, and then the second cured layer is obtained, and the three-dimensional printed object OB shown in fig. 19C can be formed after multiple layers are continuously manufactured according to the above mode.

Referring to fig. 19A and 19B, since the imaging displacement module 1940 is disposed on the path of the image beam B, the image beam B is projected to different positions at different times after passing through the imaging displacement module 1940, and in detail, the solid lines shown in fig. 19A and 19B are the positions of the image beam B projected at a certain time; the dotted lines shown in fig. 19A and 19B represent the positions where the image beam B is projected at another time. The detailed operation of the imaging shift module 1940 can be obtained from the description of the foregoing embodiments, and thus, the description thereof is omitted here. Therefore, since the three-dimensional printing apparatuses 1900a and 1900B of the present application exemplary embodiment have the imaging shift 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 apparatuses 1900a and 1900B can obtain higher resolution when curing the light-sensitive material 1912, and thus the three-dimensional printed object OB has better surface precision.

In summary, the optical device of the present invention employs the imaging shift module to be disposed on the transmission path of the plurality of sub-images, wherein the imaging shift module uses the carrying base to control the rotation of the rotating base relative to a reference plane in two axes to determine any moving direction of the sub-images in the two-dimensional plane, and the imaging shift module can improve the resolution of the sub-images in any direction. The optical device of the present invention can project an image with higher resolution using a reflective light valve with lower resolution.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An optical path adjustment mechanism comprising:

a rotating base;

the optical element is arranged in the rotating base;

the bearing base comprises a first bearing frame;

a first pair of elastic members, wherein the first bezel is coupled to the spin base through the first pair of elastic members; and

a first actuation element comprising a magnetic material and a coil module, and the coil module surrounds the optical element of the rotating base.

2. The optical path adjustment mechanism according to claim 1, wherein the pair of first elastic members includes a first spring provided with a first plane between one end and the other end and a second spring provided with a second plane between 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.

3. The optical path adjusting mechanism of claim 1, further comprising a second frame surrounding the first frame, a pair of second elastic members, and a second actuating element, wherein the second frame is coupled to the first frame via the pair of second elastic members, wherein the first and second actuating elements can rotate the rotating base along a first rotation axis and a second rotation axis.

4. An optical path adjustment mechanism comprising:

a rotating base;

the optical element is arranged in the rotating base;

the bearing base comprises a first bearing frame and a second bearing frame surrounding the first bearing frame;

a first pair of elastic members, wherein the first bezel is coupled to the rotation base through the first pair of elastic members, and the first pair of elastic members includes a first spring;

a second pair of elastic members, wherein the second bezel is coupled to the first bezel through the second pair of elastic members, and the second pair of elastic members includes a second spring; and

a first actuating element and a second actuating element, which make the rotating base rotate along a first rotating shaft and a second rotating shaft,

wherein the first spring is provided with a first end and a second end, the first end is connected with the first area of the frame, the second end is connected with one end of the base, and a first plane is arranged between the first end and the second end of the first spring, and

wherein the second spring is equipped with third end and fourth end, the third end is connected the second area of frame, the fourth end is connected the other end of base, just the second spring is in the third end with be equipped with the second plane between the fourth end.

5. The optical path adjustment mechanism according to claim 4, wherein the frame and the optical element are integrally formed.

6. The optical path adjustment 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.

7. The optical path adjustment mechanism according to any one of claims 1 to 5, wherein the optical element includes a reflective sheet or a lens.

8. The optical path adjustment mechanism according to any one of claims 1 to 5, which is applicable to an optical device, wherein the optical device further comprises a total internal reflection prism.

9. The optical path adjusting mechanism according to any one of claims 1 to 5, which is applicable to an optical device, wherein the optical device further comprises a light valve perpendicular to the optical element.

10. The optical path adjusting mechanism according to any one of claims 1 to 3, applied to an optical device, wherein the optical device further comprises a light valve, and a normal line of the light valve forms an angle of about 45 degrees with a rotation axis of the rotating base.