Galvanometer device for expanding multi-position pixel resolution

Abstract

The utility model discloses a galvanometer device for expanding multi-position pixel resolution, which comprises a bearing base, a reed, a lens, a coil group and a magnet group, the lens and the magnet group are respectively arranged on the reed, and the coil group comprises a first driving coil and a second driving coil which are respectively arranged on the bearing base; the reed comprises a base part and four fixed mounting parts distributed on the peripheral side of the base part, each fixed mounting part is connected with the bearing base, and each fixed mounting part is connected with the base part through an elastic arm; the magnet group comprises a first driving magnet, a second driving magnet, a first balance magnet and a second balance magnet, the first driving magnet and the first balance magnet are arranged oppositely, and the first driving coil is located under the first driving magnet; the second driving magnet and the second balance magnet are arranged oppositely, and the second driving coil is located under the second driving magnet. By means of the structural design, the device has the advantages of being novel in structural design and good in stress uniformity.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a galvanometer device for expanding multi-bit pixel resolution. Background Art

[0002] A projector is a device that projects images or videos onto a screen or wall. It has been widely used in homes, offices, schools and entertainment venues.

[0003] For projectors, in order to improve resolution and clarity, a galvanometer device is often used. When working, the galvanometer device changes the angle of light through reciprocating vibration or swinging motion, so that the original pixel point is divided into multiple pixel points, and a higher resolution image is obtained by superimposing multiple pixel points.

[0004] Among them, the Chinese utility model patent with the authorization announcement number of CN219266768U and the patent name of polarizer and projector discloses a galvanometer device; specifically, the polarizer includes a mounting frame, a spring piece, a lens, a magnetic stripe group, and a coil group, the spring piece includes an outer frame part, an inner frame part, and an elastic arm connected between the outer frame part and the inner frame part, and the lens is installed on the inner frame part; the magnetic stripe group is installed on the lower surface of the inner frame part, the coil group is installed on the mounting frame, and the coil group and the magnetic stripe group are arranged at a relative interval; there are two elastic arms arranged oppositely, the two elastic arms are arranged at the diagonals of the inner frame part, the connecting line of the two elastic arms is the first axis, the first axis divides the spring piece into a first area and a second area, the magnetic stripe group and the coil group are both installed in the first area or the second area, so that the electromagnetic action between the magnetic stripe group and the coil group can drive the inner frame part to swing around the first axis; the magnetic stripe group includes a first magnetic stripe and a second magnetic stripe, and the coil group includes a first coil and a second coil.

[0005] It needs to be explained that in the process of the coil being energized and driving the magnetic strip to move, a magnetic field is generated after the coil is energized, and the coil acts on the magnetic strip after being energized. The magnetic strip causes the edge of the spring to swing under the action of the dynamic Ampere force F=NBiL (N is the number of coil turns, B is the magnetic field strength of the magnetic strip, i is the current passing through the coil, and L is the effective length of the coil).

[0006] It should be noted that the above polarizer has the following defects, specifically:

[0007] Defect 1: The first and second magnetic strips of the magnetic stripe group are installed on one side of the first axis, that is, the spring sheet is not installed with a magnetic strip on the other side of the first axis, which will cause uneven force on the entire spring sheet;

[0008] Defect 2: The inner frame is connected to the outer frame only by two aligned elastic arms, which form a first axis. The two elastic arms are located at a diagonal position of the inner frame; however, there is no elastic arm at the other diagonal position of the inner frame, that is, the other diagonal position of the inner frame is suspended and not subjected to force, that is, the entire spring sheet is still subjected to uneven force. Utility Model Content

[0009] The utility model aims to provide a galvanometer device with expanded multi-bit pixel resolution in view of the deficiencies in the prior art. The galvanometer device with expanded multi-bit pixel resolution has novel structural design and good force uniformity.

[0010] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0011] A galvanometer device for extending multi-bit pixel resolution includes a bearing base, a reed, a lens, a wire package group, and a magnet group. The lens and the magnet group are respectively mounted on the reed, and the wire package group includes a first driving wire package and a second driving wire package respectively mounted on the bearing base.

[0012] The spring sheet includes a base, four fixed installation parts distributed around the base, the four fixed installation parts are arranged in a rectangular shape, and the four fixed installation parts are respectively connected to the bearing base;

[0013] Each fixed installation part is spaced apart from the base, each fixed installation part is connected to the base through an elastic arm, and the base, the fixed installation part and the elastic arm are an integrated structure;

[0014] The magnet group includes a first driving magnet, a second driving magnet, a first balancing magnet, and a second balancing magnet. The first driving magnet is installed at one of the X-axis edge positions of the base, the first balancing magnet is installed at another X-axis edge position of the base, the first driving magnet and the first balancing magnet are arranged opposite each other, and the first driving coil is located directly below the first driving magnet; the second driving magnet is installed at one of the Y-axis edge positions of the base, the second balancing magnet is installed at another Y-axis edge position of the base, the second driving magnet and the second balancing magnet are arranged opposite each other, and the second driving coil is located directly below the second driving magnet.

[0015] Wherein, the bearing base is respectively provided with upwardly protruding fixing columns corresponding to each fixing installation part of the spring sheet, and each fixing installation part of the spring sheet is respectively fastened and installed on the upper end part of the corresponding fixing column.

[0016] Wherein, each fixing and mounting portion of the spring sheet is riveted to the upper end portion of the corresponding fixing column.

[0017] The fixed installation portion is connected to the base via two elastic arms, one of which is connected to an edge portion of the base in the X-axis direction, and the other is connected to an edge portion of the base in the Y-axis direction.

[0018] The bearing base is screwed and fastened with a PCB circuit board, and the first driving line package and the second driving line package are electrically connected to the PCB circuit board respectively.

[0019] Wherein, the reed is formed by punching out a stainless steel sheet.

[0020] Compared with the prior art, the utility model has the following beneficial effects. Specifically, for the reed, the four fixed mounting parts are connected to the base through elastic arms respectively, and the four fixed mounting parts are arranged in a rectangular shape. The reed with this structural design can make the base of the lens installed be evenly stressed. In addition, the first balancing magnet is used to balance the weight of the first driving magnet, and the second balancing magnet is used to balance the weight of the second driving magnet, that is, the first balancing magnet and the second balancing magnet can make the base be balanced and evenly stressed. Therefore, the galvanometer device with extended multi-bit pixel resolution of the utility model has the advantages of novel structural design and good force uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is an exploded schematic diagram of the utility model.

[0024] Figure 3 It is a partial structural schematic diagram of the utility model.

[0025] exist Figures 1 to 3 Included are:

[0026] 1-bearing base; 11-fixed column; 2-spring; 21-base; 22-fixed mounting portion; 23-elastic arm; 3-lens; 41-first drive line package; 42-second drive line package; 51-first drive magnet; 52-second drive magnet; 53-first balance magnet; 54-second balance magnet; 6-PCB circuit board. DETAILED DESCRIPTION

[0027] The present invention will be described below in conjunction with specific implementation methods.

[0028] Embodiment 1, as Figures 1 to 3As shown, a galvanometer device with extended multi-bit pixel resolution includes a supporting base 1, a reed 2, a lens 3, a wire package group, and a magnet group. The lens 3 and the magnet group are respectively installed on the reed 2, and the wire package group includes a first driving wire package 41 and a second driving wire package 42 respectively installed on the supporting base 1.

[0029] Among them, Figures 1 to 3 As shown, the spring leaf 2 includes a base 21 and four fixing and mounting portions 22 distributed around the base 21 . The four fixing and mounting portions 22 are arranged in a rectangular shape and are respectively connected to the bearing base 1 .

[0030] Further, such as Figures 1 to 3 As shown, each fixed installation portion 22 is spaced apart from the base 21 , each fixed installation portion 22 is connected to the base 21 via an elastic arm 23 , and the base 21 , the fixed installation portion 22 , and the elastic arm 23 are an integrated structure.

[0031] It should be explained that the reed 2 of the first embodiment can be punched out of a stainless steel sheet, specifically, the reed 2 can be punched out of a SUS301 stainless steel sheet; the reed 2 made of SUS301 stainless steel has the advantages of good strength and hardness. Of course, the above materials do not constitute a limitation to the first embodiment, that is, the reed 2 of the first embodiment can also be made of other materials.

[0032] Furthermore, if Figures 1 to 3 As shown, the magnet group includes a first driving magnet 51, a second driving magnet 52, a first balancing magnet 53, and a second balancing magnet 54. The first driving magnet 51 is installed at one of the edge positions of the base 21 in the X-axis direction, and the first balancing magnet 53 is installed at another edge position of the base 21 in the X-axis direction. The first driving magnet 51 and the first balancing magnet 53 are arranged opposite to each other, and the first driving coil 41 is located directly below the first driving magnet 51; the second driving magnet 52 is installed at one of the edge positions of the base 21 in the Y-axis direction, and the second balancing magnet 54 is installed at another edge position of the base 21 in the Y-axis direction. The second driving magnet 52 and the second balancing magnet 54 are arranged opposite to each other, and the second driving coil 42 is located directly below the second driving magnet 52.

[0033] During the operation of the galvanometer device with extended multi-bit pixel resolution of the first embodiment, the magnetic field generated after the first driving coil 41 is energized drives the first driving magnet 51 to deflect on the Z axis, and the magnetic field generated after the second driving coil 42 is energized drives the second driving magnet 52 to deflect on the Z axis; during operation, the first driving coil 41 and the second driving coil 42 are energized in a cycle, and the position of the base 21 corresponding to the first driving magnet 51 and the position of the base 21 corresponding to the second driving magnet 52 are cyclically deflected on the Z axis in sequence, thereby realizing the expansion of one pixel point into two pixel points, thereby doubling the projection resolution of the projector.

[0034] It should be pointed out that, for the spring leaf 2 of the first embodiment, the four fixed mounting parts 22 are connected to the base 21 through the elastic arms 23 respectively, and the four fixed mounting parts 22 are arranged in a rectangular shape. The spring leaf 2 of this structural design can make the base 21 on which the lens 3 is mounted be subjected to uniform force. In addition, the first balancing magnet 53 is used to balance the weight of the first driving magnet 51, and the second balancing magnet 54 is used to balance the weight of the second driving magnet 52, that is, the first balancing magnet 53 and the second balancing magnet 54 can make the base 21 subjected to balanced and uniform force. It should be emphasized that only when the base 21 of the spring leaf 2 is subjected to balanced and uniform force, the dynamic Ampere force generated by each driving coil after being energized can accurately control the offset of the corresponding edge position.

[0035] Therefore, based on the above, it can be known that, through the above structural design, the galvanometer device with extended multi-bit pixel resolution of the first embodiment has the advantages of novel structural design and good force uniformity.

[0036] Embodiment 2, as Figure 1 and Figure 2 As shown, the difference between the second embodiment and the first embodiment is that each fixed installation part 22 of the second embodiment can be installed on the supporting base 1 in the following manner, specifically: each fixed installation part 22 of the supporting base 1 corresponding to the spring leaf 2 is respectively provided with a fixed column 11 protruding upward, and each fixed installation part 22 of the spring leaf 2 is respectively fastened and installed on the upper end part of the corresponding fixed column 11.

[0037] Furthermore, each fixing and mounting portion 22 of the spring leaf 2 is riveted to the upper end of the corresponding fixing column 11 .

[0038] Embodiment three, as Figures 1 to 3 As shown, the difference between the third embodiment and the first embodiment is that the fixed mounting portion 22 is connected to the base 21 via two elastic arms 23, wherein one elastic arm 23 is connected to the edge of the base 21 in the X-axis direction, and one elastic arm 23 is connected to the edge of the base 21 in the Y-axis direction.

[0039] Each of the fixed installation parts 22 of the third embodiment is connected to the base 21 via two elastic arms 23 . This structural design can further improve the force uniformity of the base 21 .

[0040] Embodiment 4, as Figure 1 and Figure 2 As shown, the difference between the fourth embodiment and the first embodiment is that the supporting base 1 is screwed and fastened with a PCB circuit board 6 , and the first driving wire package 41 and the second driving wire package 42 are electrically connected to the PCB circuit board 6 respectively.

[0041] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A galvanometer device for extending multi-bit pixel resolution, comprising a bearing base (1), a reed (2), a lens (3), a wire package group, and a magnet group, wherein the lens (3) and the magnet group are respectively mounted on the reed (2), and the wire package group comprises a first driving wire package (41) and a second driving wire package (42) respectively mounted on the bearing base (1); Features: The spring leaf (2) comprises a base (21), four fixed installation portions (22) distributed around the base (21), the four fixed installation portions (22) being arranged in a rectangular shape, and the four fixed installation portions (22) being respectively connected to the bearing base (1); Each fixed installation portion (22) is spaced apart from the base portion (21), each fixed installation portion (22) is connected to the base portion (21) via an elastic arm (23), and the base portion (21), the fixed installation portion (22), and the elastic arm (23) are an integrated structure; The magnet group comprises a first driving magnet (51), a second driving magnet (52), a first balancing magnet (53), and a second balancing magnet (54); the first driving magnet (51) is mounted at one edge portion of the base (21) in the X-axis direction, the first balancing magnet (53) is mounted at another edge portion of the base (21) in the X-axis direction, the first driving magnet (51) and the first balancing magnet (53) are arranged opposite each other, and the first driving coil (41) is located directly below the first driving magnet (51); The second driving magnet (52) is mounted on one edge portion of the base (21) in the Y-axis direction, and the second balancing magnet (54) is mounted on another edge portion of the base (21) in the Y-axis direction. The second driving magnet (52) and the second balancing magnet (54) are arranged opposite each other, and the second driving coil (42) is located directly below the second driving magnet (52).

2. The galvanometer device for extending multi-bit pixel resolution according to claim 1, characterized in that: The bearing base (1) is respectively provided with upwardly protruding fixing columns (11) corresponding to each fixing installation portion (22) of the spring leaf (2), and each fixing installation portion (22) of the spring leaf (2) is respectively fastened to the upper end portion of the corresponding fixing column (11).

3. The galvanometer device for extending multi-bit pixel resolution according to claim 2, characterized in that: Each fixing and mounting portion (22) of the leaf spring (2) is riveted to the upper end of the corresponding fixing column (11).

4. The galvanometer device for extending multi-bit pixel resolution according to claim 1, characterized in that: The fixed installation portion (22) is connected to the base (21) via two elastic arms (23), wherein one elastic arm (23) is connected to an edge portion of the base (21) in the X-axis direction, and one elastic arm (23) is connected to an edge portion of the base (21) in the Y-axis direction.

5. The galvanometer device for extending multi-bit pixel resolution according to claim 1, characterized in that: The bearing base (1) is screwed and fastened with a PCB circuit board (6), and the first driving wire package (41) and the second driving wire package (42) are respectively electrically connected to the PCB circuit board (6).

6. The galvanometer device for extending multi-bit pixel resolution according to claim 1, characterized in that: The reed (2) is formed by punching a stainless steel sheet.

Images