CN201066401Y - Imaging displacement module - Google Patents

Abstract

An imaging displacement module comprises a frame, an optical element, a bearing seat, a connecting part and at least one first actuator, wherein the frame is provided with a first opening, the optical element, the bearing seat, the connecting part and the first actuator are all arranged in the first opening, the bearing seat is suitable for bearing the optical element, the connecting part is connected with the frame and the bearing seat and is suitable for generating elastic torsion by taking an axis as a fulcrum, and the first actuator is arranged on one side of the bearing seat and is suitable for driving the bearing seat to vibrate repeatedly. The utility model discloses an imaging displacement module can be in the imaging position of a plurality of subimages of each picture frame time switch, and then improves projection arrangement's image quality.

Description

Imaging displacement module

【Technical field】

The utility model relates to an imaging displacement module, and in particular to an imaging displacement module capable of improving image resolution.

【Background technique】

In recent years, various display technologies have been widely used in daily life, such as liquid crystal display panel (LCD panel), plasma display panel (PDP), projection apparatus, etc. In terms of displaying large-scale images, projection devices are the most practical. Therefore, projection devices have gradually become one of the indispensable technologies for large-scale display. Generally speaking, when the projection device projects an image onto the screen, there is often a black area between each pixel in the image, and the black area looks like a net as a whole. Since the projection device is mostly used for large-scale image display, the above-mentioned mesh-shaped black area is often noticed by the user, which makes the user feel that the image quality is not good.

In order to solve the aforementioned problem of poor image quality, some conventional technologies have been proposed successively. These conventional technologies mainly use the prism or projection lens in the vibrating optical engine to quickly switch the projection position of the image on the screen, thereby eliminating or reducing the mesh black area. However, in the projection device, since the weight and volume of the prism and the projection lens itself are very large, if the prism or the projection lens is to be vibrated, the vibration mechanism must be quite complicated and will occupy a considerable space. Therefore, the vibrating prism or the projection lens The practice of lens is less feasible in actual mass production.

【Content of utility model】

The utility model provides an imaging displacement module, which is used to switch the imaging positions of multiple sub-images within each frame time, thereby improving the image quality of a projection device.

In order to achieve the above purpose, the utility model provides an imaging displacement module, which is characterized in that: comprising:

a frame with a first opening;

an optical element configured in the first opening;

a bearing seat, configured in the first opening, and suitable for bearing the optical element;

a connecting part, connecting the frame and the bearing seat, the connecting part is suitable for generating elastic torsion with an axis as a fulcrum; and

At least one first actuator is disposed in the first opening and on one side of the bearing base, and the first actuator is suitable for driving the bearing base to vibrate repeatedly.

The utility model also provides an imaging displacement module, which is characterized in that: comprising:

a frame with a first opening;

an optical element configured in the first opening;

A bearing seat has a second opening suitable for installing the optical element;

a connection part connected between the frame and the bearing seat, wherein the connection part is suitable for generating elastic torsion; and

At least one first actuator is disposed in the first opening and disposed on one side of the bearing seat.

In order to achieve one or part or all of the above purposes or other purposes, the utility model proposes an imaging displacement module, including a frame, an optical element, a bearing seat, a connecting part and at least one first actuator . The frame has a first opening, and the optical element, the bearing seat, the connecting part and the first actuator are all arranged in the first opening. The bearing seat is suitable for carrying optical components, and the connecting part connects the frame and the bearing seat, and is suitable for generating elastic torsion with an axis as a fulcrum. The first actuator is arranged on one side of the bearing base and is suitable for driving the bearing base to vibrate repeatedly. A plane formed by the axis of the connecting portion and the centroid of the optical element is perpendicular to a surface of the optical element. The connecting portion may include two connecting cylinders respectively located on both sides of the bearing seat, and these connecting cylinders are U-shaped or ㄇ-shaped (“door” shaped). The frame, the bearing seat and the connection part are integrally formed. The first actuator includes a voice coil motor (voice coil motor, VCM) or a piezoelectric ceramic (piezoelectric ceramic, PZT). The imaging displacement module further includes at least one second actuator disposed in the first opening and disposed on the other side of the bearing base. The second actuator is suitable for driving the bearing seat to vibrate repeatedly with the first actuator. The second actuator includes a voice coil motor or piezoelectric ceramic. The optical element is a mirror. The connecting portion is connected to the bottom surface of the bearing seat, and its two ends are respectively connected to two opposite inner surfaces of the frame. The imaging displacement module further includes a base, and the frame is adapted to be disposed on the base, and the first actuator is disposed between the bearing base and the base. The imaging displacement module further includes a circuit board, and the base further has a second opening, and the circuit board is arranged in the second opening.

The base further has a baffle connected to the inner edge of the second opening, and a chip of the circuit board is suitable for contacting the baffle or a heat sink or a material with heat dissipation function is arranged under the baffle, such as thermal paste, etc., wherein The baffle is made by stamping.

The imaging displacement module further includes a damping material filled between the bearing seat and the baffle. The damping material is damping adhesive or foam material. The first actuator includes a coil and a magnet, wherein the coil is connected to one side of the supporting seat, and the magnet is arranged on the base and is adjacent to the coil.

The base further has an accommodating portion, and the magnet is arranged in the accommodating portion.

The optical element is a light-transmitting glass or a light-transmitting plastic. The supporting base has a third opening, and transparent glass or plastic is installed in the third opening.

The imaging displacement module further includes a base, and the base has a second opening corresponding to the third opening. The frame is arranged on the base, and the first actuator and the second actuator are arranged between the bearing base and the base.

The utility model utilizes the actuator to repeatedly vibrate the optical element arranged on the bearing base with the connection part as the fulcrum, which can provide very stable vibration, and the feasibility of actual mass production is very high.

In summary, the imaging displacement module of the present invention has the following advantages:

1. The image beam is projected to different positions on the screen through the reflection or transmission of the optical element, thereby eliminating or reducing the generation of mesh black areas, so it can be used to improve the image quality of the projection device.

2. The optical element arranged on the bearing seat is repeatedly vibrated with the connecting part as the fulcrum by using the actuator, so the stability is high and the volume is small.

3. The connecting part uses connecting cylinders, so the material cost will be lower.

4. Since there is no need to use a sensor to sense the rotation angle of the supporting base, the material cost is low and the control is relatively easy.

5. The frame, the bearing seat and the connection part are manufactured in an integrated manner, so the production cost is relatively low.

6. The actuator is arranged on opposite sides of the bearing seat and outside the optical element, so the overall thickness will be small.

7. Since the bearing seat has a small mass moment of inertia, not only the bearing seat can obtain a higher reaction speed, but also only need to use a small actuator to achieve the preset rotation angle, thereby reducing the overall volume Can be scaled down.

8. The accommodating part for disposing the magnet is made by stamping, so not only the production cost can be reduced, but also the overall thickness can be reduced.

9. The circuit board is arranged in the second opening of the base to effectively utilize the space of the imaging displacement module, so the overall thickness will be smaller.

10. The baffle can not only prevent the circuit board from contacting the bearing seat during installation, but also the chip of the circuit board can penetrate the heat generated during operation by contacting the baffle or the heat sink or thermal paste under the baffle. The heat is transferred to the base through the heat sink or the baffle, so that the chip can dissipate heat through the base.

11. When the actuator drives the bearing base to repeatedly vibrate with the connecting part as the fulcrum, the damping material filled between the bearing base and the baffle can be used to isolate the resonance phenomenon generated by the excitation between the bearing base and the base.

12. U-shaped cylinders can be used for the connecting part, so that the bearing seat can more easily reach the expected rotation angle.

13. It is not only suitable for carrying reflectors, but also suitable for carrying light-transmitting glass or light-transmitting plastic, so as to be installed on an L-shaped projection lens or a straight projection lens with multiple lenses.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

【Description of drawings】

FIG. 1 is a schematic structural diagram of an imaging displacement module according to the first embodiment of the present invention.

Fig. 2 is a sectional view along line I-I' in Fig. 1.

FIG. 3 is a side view of the L-shaped projection lens with the imaging displacement module in FIG. 1 .

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

Fig. 5 is a cross-sectional view along line II-II' in Fig. 4 .

FIG. 6 is an exploded view of FIG. 4 .

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

Fig. 8 is a cross-sectional view along line III-III' in Fig. 7 .

【Detailed ways】

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

[first embodiment]

Please refer to FIG. 1 and FIG. 2 , the imaging displacement module 100 a includes a frame 110 , an optical element 120 , a bearing seat 130 , a connecting portion 140 and at least one first actuator 150 a. The frame 110 has a first opening 112 , and the optical element 120 , the bearing seat 130 , the connecting portion 140 and the first actuator 150 a are all disposed in the first opening 112 . The bearing base 130 is suitable for bearing the optical element 120 , and the connecting portion 140 is connected between the frame 110 and the bearing base 130 and is suitable for generating elastic torsion with an axis 160 as a fulcrum. The first actuator 150 a is disposed on one side of the bearing base 130 and is suitable for driving the bearing base 130 to vibrate repeatedly with the connecting portion 140 as a fulcrum.

In this embodiment, the plane formed by the axis of the connecting portion 140 and the center of mass of the optical element 120 is perpendicular to the surface of the optical element 120 , and the optical element 120 is, for example, a mirror. Furthermore, the bearing seat 130 has a groove 132 , and the optical element 120 is installed in the groove 132 , for example. In addition, the connection portion 140 is, for example, a cylinder, and is connected to the bottom surface of the bearing seat 130 , and its two ends are respectively connected to two opposite inner surfaces of the frame 110 . Wherein, the line connecting the axes of the connecting portion 140 is, for example, an axis 160 , and the frame 110 , the bearing seat 130 and the connecting portion 140 are, for example, manufactured in an integrated manner.

In addition, the imaging displacement module 100 a further includes at least one second actuator 150 b disposed in the first opening 112 and disposed on the other side of the bearing base 130 . The second actuator 150b is adapted to drive the supporting base 130 to repeatedly vibrate with the first actuator 150a around the connecting portion 140 as a fulcrum, so as to make the connecting portion 140 elastically twist along its axis. In this embodiment, the number of the first actuator 150a and the second actuator 150b is one, and the first actuator 150a and the second actuator 150b are respectively arranged on opposite sides of the bearing seat 130, and located outside the optical element 120 . However, in this embodiment, the numbers of the first actuator 150a and the second actuator 150b are not used to limit the present invention. Wherein, the first actuator 150a and the second actuator 150b are, for example, voice coil motors or piezoelectric ceramics, and the bearing seat 130 is The method of driving and repeatedly vibrating with the connecting portion 140 as a fulcrum will be described in detail in the following embodiments.

Then, please refer to FIG. 3 , the image displacement module 100a in this embodiment is suitable for being installed in an L-shaped projection lens 200 with a plurality of lenses 210, wherein the lenses 210 can be divided into a first lens group 212 and a second lens group. Lens group 214. In a projection device (not shown), an image light beam 300 processed by an optical engine (not shown) will pass through the first lens group 212, be reflected by the imaging displacement module 100a, and then pass through the second lens group 214 projected onto the screen.

In the above-mentioned L-shaped projection lens 200, since the first actuator 150a and the second actuator 150b will drive the supporting seat 130 to repeatedly vibrate with the connecting part 140 as the fulcrum, the image beam 300 can be transmitted by the optical element 120. Reflected and projected to different positions on the screen, thereby eliminating or reducing the generation of mesh black areas. Therefore, the imaging displacement module 100a can be used to improve the image quality of the projection device.

In addition, since the connecting part 140 uses a connecting cylinder instead of a bearing commonly used in the prior art, the material cost will be lower. Moreover, since the rotation range of the bearing seat 130 is limited by the elastic torsion of the connecting portion 140 (θ=M/K, where θ is the rotation angle, M is the moment, and K is the elastic value of the material), there is no need for a sense of use. The sensor senses the rotation angle of the bearing base 130 , therefore, the material cost is low and the control is relatively easy. Furthermore, the frame 110 , the bearing seat 130 and the connecting portion 140 are manufactured in an integrated manner, so the production cost is relatively low.

In addition, the actuators 150a, 150b are disposed on opposite sides of the bearing seat 130 and are located outside the optical element 120, so the overall thickness is relatively small. Furthermore, when the plane formed by the axis center of the connecting portion 140 and the centroid of the optical element 120 is perpendicular to the surface of the optical element 120, the bearing seat 130 will have a smaller mass moment of inertia (I=∫r ² dm, where I is mass moment of inertia, r is the distance from the particle to the axis of rotation, and dm is the mass of the particle). Therefore can obtain higher natural frequency (ω ² =K/I, wherein, ω is natural frequency, K is the elasticity number of material, and I is mass inertia moment) because of having smaller mass moment of inertia, and then improves The response speed of the bearing seat 130. In addition, it only needs to use a small actuator to provide enough torque to the bearing base 130 to make the bearing base 130 reach a preset rotation angle, thereby reducing the overall volume of the imaging displacement module 100a.

[Second embodiment]

Please refer to FIG. 4 to FIG. 6, the structure of the imaging displacement module 100b in this embodiment is generally that the connecting part 140 includes two connecting cylinders respectively located on both sides of the bearing seat 130, and the axis 160 of the connecting cylinder is the fulcrum. , the imaging displacement module 100b does not include the second actuator 150b.

In this embodiment, the imaging displacement module 100b may further include a base 170 . Wherein, the frame 110 is, for example, disposed on the base 170 , and the first actuator 150 a is, for example, disposed between the bearing base 130 and the base 170 . Moreover, the first actuator 150 a is, for example, a voice coil motor, and the first actuator 150 a includes a coil 152 , a coil frame 154 and a magnet 156 , and the base 170 can further have a receiving portion 172 . Wherein, the coil 152 is, for example, wound on the coil frame 154, and is connected to one side of the bearing seat 130 by the coil frame 154, and the magnet 156 is, for example, disposed in the accommodation portion 172, and the accommodation portion 172 is formed by stamping, for example. way of making.

According to Lawrence's law (Lorentz law), when the coil 152 receives a current, the coil 152 will be affected by the magnetic field provided by the magnet 156 to drive the bearing seat 130 to swing an angle (not shown) with the connecting portion 140 as the axis, and The connecting portion 140 is elastically twisted along the axis 160 as a fulcrum. Then, when the coil 152 receives a current in another direction, the coil 152 will be affected by the magnetic field provided by the magnet 156 to drive the supporting base 130 to swing in the opposite direction at another angle with the connecting portion 140 as the axis. It can be seen from this embodiment that the first actuator 150a is suitable for driving the bearing seat 130 to repeatedly vibrate with the connecting part 140 as the fulcrum by changing the direction of the current received by the coil 152, so that the connecting part 140 generates a force along its axis. Elastic torsion.

In addition, the imaging displacement module 100b can further include a circuit board 180 , and the base 170 can further have a second opening 174 (shown in FIG. 6 ), and the circuit board 180 is disposed in the second opening 174 , for example. The circuit board 180 is adapted to change the direction and magnitude of the current in the coil 152 to change the rotation direction and rotation angle of the bearing base 130 .

Furthermore, the base 170 may further have a baffle 176 connected to the inner edge of the second opening 174, and a chip 182 of the circuit board 180 is suitable for contacting the baffle 176 or a heat sink placed under the baffle 176. (thermal pad). The baffle plate 176 can not only prevent the circuit board 180 from contacting the carrier 130 during installation, but also allow the heat energy generated by the chip 182 to pass through through the chip 182 through the contact of the heat dissipation material such as the heat sink or thermal paste below it with the chip 182. Heat dissipation materials such as heat sinks are transferred to the base 170 through the baffle 176 , so that the chip 182 can dissipate heat through the base 170 . Wherein, the baffle 176 is made by stamping, for example.

In addition, the imaging displacement module 100b may further include a damping material (not shown) filled between the bearing base 130 and the baffle 176 to isolate the vibration and imaging of the bearing base 130 driven by the first actuator 150a. The external vibration of the displacement module 100b further improves the resonance phenomenon generated by the excitation between the supporting base 130 and the base 170 . Wherein, the damping material is, for example, damping glue or foam material. Furthermore, the imaging displacement module 100b further includes a plurality of locking components 190 . Wherein, the optical element 120 is locked in the groove 132 by the locking member 190, and the bearing seat 130 is locked on the base 170 by the locking member 190, and the coil frame 154 is locked by the locking member The component 190 is locked to the bearing base 130 .

[Third embodiment]

Please refer to FIG. 7 and FIG. 8 , the structure of the imaging displacement module 100c in this embodiment is that the connecting part 140 includes two connecting cylinders respectively located on both sides of the bearing seat 130 , wherein the axis connecting the cylinders is the axis 160 , and the connecting cylinder is, for example, a U-shaped cylinder or a ㄇ-shaped cylinder (“door”-shaped cylinder), moreover, the optical element 120 is a light-transmitting glass or a light-transmitting plastic instead of a reflector, and the bearing seat 130 There is a third opening 134 instead of the groove 132 , and the optical element 120 is installed in the third opening 134 , so that the image beam can pass through the optical element 120 .

In this embodiment, the frame 110 , the bearing seat 130 and the connecting portion 140 are not manufactured in an integrated manner. Wherein, the connecting portion 140 is connected between the frame 110 and the bearing base 130 via locking members 190 , for example. It is worth noting that since the U-shaped cylinder or ㄇ-shaped cylinder ("door"-shaped cylinder) is more rigid when subjected to lateral force than when subjected to torque, it is easier to produce elasticity when subjected to external force The torsional deformation is not easy to produce lateral bending deformation, so that the carrying seat 130 can easily achieve the expected rotation angle.

Same as the second embodiment, the imaging displacement module 100c may also include a base 170 . Wherein, the frame 110 is, for example, disposed on the base 170 , and the first actuator 150 a and the second actuator 150 b are, for example, disposed between the bearing seat 130 and the base 170 . However, since the optical element 120 is transparent glass or plastic, the second opening 174 on the base 170 must correspond to the third opening 134 of the bearing seat 130 to avoid blocking the transmission of the image beam. Similarly, a circuit board (not shown) for changing the direction and magnitude of the current in the coil 152 cannot be disposed in the second opening 174 to avoid blocking the transmission of the image beam.

In this embodiment, the first actuator 150a and the second actuator 150b are, for example, voice coil motors, and the first actuator 150a and the second actuator 150b respectively include a coil 152, a coil former 154 and a magnet 156 , and the base 170 can further have two opposite receiving portions 172 . Wherein, the coils 152 are, for example, respectively wound on the corresponding coil frames 154, and are respectively connected to opposite sides of the bearing base 130 via the coil frames 154, and the magnets 156 are respectively arranged on the base 170, and are respectively arranged on the corresponding and are respectively adjacent to the corresponding coils 152 . Similarly, the accommodating portion 172 is made by stamping, for example. Wherein, the voice coil motors (the first actuator 150 a and the second actuator 150 b ) drive the carrying base 130 to repeatedly vibrate with the connecting portion 140 as the fulcrum in the same manner as the second embodiment, which will not be repeated here. It can be known from the above-mentioned embodiments that the imaging displacement module is not only suitable for carrying mirrors, but also suitable for carrying light-transmitting glass or light-transmitting plastic, so that the imaging displacement module is installed on a cylindrical projection with multiple lenses. lens.

In addition, the same as the second embodiment, the optical element 120 can be locked in the groove 132 by the locking member 190, and the bearing seat 130 can be locked on the base 170 by the locking member 190, And the bobbin 154 can be locked on the supporting seat 130 by the locking member 190 .

The above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model implementation with this, that is, all simple equivalent changes and modifications made according to the content of the utility model are still within the scope of this utility model. within the scope of utility models.

[Description of main component symbols]

100a, 100b, 100c: imaging position 160: axis

Module shifting unit 170: Base

110: Frame 172: Housing

112: The first opening 174: The second opening

120: Optical element 176: Baffle

130: Bearing seat 180: Circuit board

132: Groove 182: Chip

134: The third opening 190: Locking component

140: Connection part 200: Projection lens

150a, 150b: Actuator 210: Lens

152: coil 212, 214: lens group

154: coil former 300: image beam

156: magnet

Claims (23)

1. An imaging displacement module, characterized in that: comprising: a frame with a first opening; an optical element configured in the first opening; a bearing seat, configured in the first opening, and suitable for bearing the optical element; a connecting part, connecting the frame and the bearing seat, the connecting part is suitable for generating elastic torsion with an axis as a fulcrum; and At least one first actuator is disposed in the first opening and on one side of the bearing base, and the first actuator is suitable for driving the bearing base to vibrate repeatedly. 2 . The imaging displacement module according to claim 1 , wherein a plane formed by the axis of the connecting portion and the centroid of the optical element is perpendicular to a surface of the optical element. 3 . 3 . The imaging displacement module according to claim 1 , wherein the connecting portion comprises two connecting cylinders respectively located on two sides of the supporting base. 4 . 4. The imaging displacement module as claimed in claim 3, wherein the connecting cylinders are U-shaped cylinders. 5. The imaging displacement module according to claim 4, wherein the connecting cylinder is made of metal or plastic. 6 . The imaging displacement module as claimed in claim 1 , wherein the frame, the supporting base and the connecting portion are integrally formed. 6 . 7. The imaging displacement module as claimed in claim 1, wherein the first actuator comprises a voice coil motor or a piezoelectric ceramic. 8. The imaging displacement module according to claim 1, further comprising at least one second actuator, which is arranged on the other side of the supporting seat and is suitable for driving the first actuator together with the first actuator. The bearing seat vibrates repeatedly. 9. The imaging displacement module as claimed in claim 1, wherein the optical element is a mirror. 10 . The imaging displacement module as claimed in claim 1 , wherein the connecting portion is connected to the bottom surface of the bearing seat, and two ends of the connecting portion are respectively connected to two opposite inner surfaces of the frame. 11 . 11. The imaging displacement module according to claim 1, further comprising a base, wherein the frame is adapted to be disposed on the base, and the first actuator is disposed between the bearing seat and the base between. 12. The imaging displacement module according to claim 11, further comprising a circuit board, wherein the base further has a second opening, and the circuit board is disposed in the second opening. 13. The imaging displacement module according to claim 12, wherein the base further has a baffle connected to the inner edge of the second opening, and a chip of the circuit board is suitable for contacting the baffle Or a heat sink or thermal paste under the baffle. 14. The imaging displacement module according to claim 1, further comprising a damping material filled between the bearing base and the bottom plate. 15. The imaging displacement module according to claim 14, wherein the damping material is damping glue or foam material. 16. The imaging displacement module according to claim 1, wherein the first actuator comprises a coil and a magnet, the coil is connected to one side of the supporting seat, and the magnet is disposed on the base, and adjacent to the coil. 17. The imaging displacement module according to claim 16, wherein the base further has a receiving portion, and the magnet is disposed in the receiving portion. 18. An imaging displacement module, characterized in that: comprising: a frame with a first opening; an optical element configured in the first opening; A bearing seat has a second opening suitable for installing the optical element; a connection part connected between the frame and the bearing seat, wherein the connection part is suitable for generating elastic torsion; and At least one first actuator is disposed in the first opening and disposed on one side of the bearing base. 19. The imaging displacement module according to claim 18, wherein the optical element is a light-transmitting glass or a light-transmitting plastic. 20. The imaging displacement module according to claim 18, characterized in that: the connecting portion comprises two connecting cylinders respectively located on both sides of the supporting seat, and these connecting cylinders are suitable for elastic torsion with the axis as a fulcrum . 21. The imaging displacement module as claimed in claim 18, wherein the connecting parts are U-shaped cylinders. 22. The imaging displacement module according to claim 18, further comprising at least one second actuator, disposed on the other side of the supporting base, and adapted to drive the first actuator together with the first actuator. Bearing seat. 23. The imaging displacement module as claimed in claim 18, wherein the frame, the supporting seat and the connecting portion are integrally formed.

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