Pixel multiplication device

Abstract

The utility model provides a pixel multiplication device which is mainly used for solving the technical problems that an elastic piece of an existing pixel multiplication device is forced to move in a vibration or impact environment, rotation ranges of the elastic piece can be overlapped, rotation exceeds a specified range, and the pixel multiplication device cannot be well suitable for a vehicle-mounted environment. The utility model relates to a pixel multiplication device, which comprises a fixing screw, a limiting gasket, a fixing gasket, an elastic sheet, a magnet, a lens, a fixing seat and a driving plate. A first light through hole is formed in the driving plate, a second light through hole is formed in the elastic piece, and a movable structure is further arranged on the elastic piece. The lens is located in the second light through hole and placed in the first light through hole, and the magnet is located between the elastic piece and the driving plate. The fixing screw sequentially penetrates through the limiting gasket, the fixing gasket and the movable structure and is fixedly connected into the fixing base, a coil is arranged in the driving plate and generates an alternating magnetic field, the magnet drives the movable structure to move upwards or downwards under the action of the alternating magnetic field, and the elastic piece drives the lens to deflect.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging, and specifically relates to a pixel multiplication device. Background Technology

[0002] A quadruple pixel multiplier is a device that increases the pixel count of an image by four times. Its working principle involves rapidly switching optical lenses between two deflection axes, refracting the imaging beams of multiple incident subframes onto four positions on the imaging surface. The subframes at these four positions are then superimposed to form a single image frame with four times the pixel count of the original subframes. This achieves a quadruple pixel multiplier effect without increasing the number of pixels in the projection chip.

[0003] With the electrification and intelligentization of automobiles, the demand for in-vehicle projection has emerged. In-vehicle projection typically needs to present clear and detailed images within a limited space to meet passengers' needs for watching videos and viewing navigation. Pixel doubling devices can increase the number of pixels in an image without increasing the physical pixels of the projection chip, thereby significantly improving image resolution and clarity through specific technical means.

[0004] Chinese patent CN117784396A discloses a pixel multiplication device, including a circuit board, a spring, an optical lens, and 4N permanent magnets. The spring is fixed to the upper surface of the circuit board by a fixing device. The optical lens is located in the second light-transmitting hole of the circuit board. 4N built-in coils are arranged on the circuit board opposite to each permanent magnet to form 4N sets of electromagnetic actuators. The electromagnetic actuators on both sides of the X-axis generate equal and opposite driving forces, and the electromagnetic actuators on both sides of the Y-axis generate equal and opposite driving forces. However, its disadvantages are that the spring is directly pressed and fixed by fastening screws, which results in no physical limit when the spring rotates upward. The maximum range of upward rotation is limited only by the magnitude of the driving force. Since there is no measurement feedback mechanism for the rotation angle of the spring, the driving force cannot be adjusted in real time. Under vibration or impact, the forced movement of the spring will cause its rotation range to overlap, resulting in rotation exceeding the specified range. The product has low reliability and lacks vibration and impact resistance when applied in automotive environments. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem that in existing pixel multiplication devices, the rotation range of the spring is superimposed under vibration or impact, causing the rotation to exceed the specified range and making it unsuitable for vehicle environments. The invention proposes a pixel multiplication device.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A pixel multiplication device includes a spring, a lens, a drive board, multiple fixing screws, a magnet, and a mounting base, and is characterized in that it also includes multiple limiting shims and fixing shims.

[0008] The drive board has a first light-transmitting hole at its center, and a coil is installed inside the drive board to generate an alternating magnetic field.

[0009] The spring sheet has a second light-transmitting hole at its center, and multiple movable structures are respectively provided on the side of the spring sheet; multiple fixing seats are respectively arranged around the first light-transmitting hole and correspond to the positions of multiple movable structures, and are used to fix the multiple movable structures in conjunction with fixing screws.

[0010] Multiple magnets are respectively attached to the lower part of the spring sheet and close to the movable structure; a gap is maintained between the magnets and the drive plate to drive the movable structure to move upward or downward under the action of the alternating magnetic field, so as to deflect the spring sheet.

[0011] The lens is larger than the second light-transmitting hole but smaller than the first light-transmitting hole. The lens is adhered to the lower surface of the spring and placed in the first light-transmitting hole. A gap is maintained between the lens and the first light-transmitting hole so that it can deflect within the first light-transmitting hole under the action of the spring.

[0012] Multiple fixed pads are disposed above the movable structure, and multiple limiting pads are respectively disposed above the multiple fixed pads, for limiting the movable structure when it moves upward through the fixed pads;

[0013] The plurality of fixing screws pass through the corresponding limiting washer, fixing washer and movable structure in sequence, and are fixed in the corresponding fixing seat.

[0014] Furthermore, the movable structure includes a movable groove, a movable plate, two first straight beams, a second straight beam, and a fixed plate;

[0015] The movable groove is located on the side of the spring piece and is an open semi-circular groove;

[0016] The movable piece is a semi-circular ring, with a gap between the outer edge of the semi-circular ring and the movable groove, and the midpoint of the outer edge of the semi-circular ring is fixedly connected to the bottom of the movable groove; the two ends of the semi-circular ring are respectively connected to one end of two first straight beams; the other ends of the two first straight beams are respectively connected to one end of two second straight beams; the two first straight beams are located on the same straight line, and the two second straight beams are located on the same straight line; the first straight beams and the second straight beams are arranged parallel to each other, and a gap is maintained between them;

[0017] The inner side of the movable semi-circular ring serves as a fixing groove. The fixing plate is circular, with a gap between one side of the fixing plate and the fixing groove, and the other side is fixedly connected to the other end of the two second straight beams.

[0018] The fixing plate has a fixing hole at its center, and the fixing hole corresponds to the position of the fixing seat to allow the fixing screw to pass through.

[0019] Furthermore, the fixing pad is annular and coaxially disposed above the fixing plate;

[0020] The outer diameter of the fixing shim is smaller than that of the fixing piece and larger than that of the fixing hole. It is used to allow the movable piece to pass over the fixing shim when the spring moves upward, so as to prevent the fixing shim from interfering with the movement of the spring.

[0021] Furthermore, the limiting shim is a circular structure with a chord edge on one side, and is coaxially mounted on the fixing shim;

[0022] The chord edge of the limiting shim remains parallel to the second straight beam;

[0023] The outer diameter of the limiting pad is larger than the diameter of the fixed groove and smaller than the outer diameter of the movable piece, so that the movable piece is limited when it moves upward past the fixed pad;

[0024] The fixing screw passes through the limiting washer, the fixing washer and the fixing hole in sequence, and is fixedly connected in the corresponding fixing seat.

[0025] Furthermore, the first light-transmitting hole, the second light-transmitting hole, the lens, and the spring are all square; the spring deflects around the X-axis or the Y-axis, which are the two mutually perpendicular axes of symmetry of the spring; there are four movable structures, which are respectively located at the middle of the four sides of the spring.

[0026] Furthermore, the number of magnets is eight, with two magnets disposed below each side of the spring piece, and the two magnets are distributed at both ends of the movable groove.

[0027] The beneficial effects of this utility model are:

[0028] 1. This utility model discloses a pixel multiplication device, comprising a fixing screw, a limiting washer, a fixing washer, a spring, a magnet, a lens, a fixing base, and a drive plate. The drive plate has a first light-transmitting hole, the spring has a second light-transmitting hole, and the spring also has a movable structure. The lens is located in the second light-transmitting hole and placed within the first light-transmitting hole, and the magnet is located between the spring and the drive plate. The fixing screw passes sequentially through the limiting washer, the fixing washer, and the movable structure, and is fixedly connected to the fixing base. The drive plate has a built-in coil that generates an alternating magnetic field. Under the action of the alternating magnetic field, the magnet drives the movable structure to move upward or downward, causing the spring to deflect the lens.

[0029] 2. This utility model discloses a pixel multiplication device, in which a fixed shim is provided between the limiting shim and the movable structure. By setting the limiting shim and the fixed shim, the maximum position that the spring can reach when it deflects upward is the contact position with the limiting shim. Even under vibration or impact conditions, the rotation range of the spring will not exceed the limiting shim, thereby improving the reliability of the device and enabling it to better adapt to the vehicle environment. Attached Figure Description

[0030] Figure 1 This is an exploded view of an embodiment of the pixel multiplication device of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of an embodiment of the pixel multiplication device of this utility model. Figure 1 ;

[0032] Figure 3 This is a schematic diagram of the structure of an embodiment of the pixel multiplication device of this utility model. Figure 2 ;

[0033] Figure 4 This is a schematic diagram of the structure of the spring sheet in an embodiment of the pixel multiplication device of this utility model;

[0034] Figure 5 This is a front view of an embodiment of the pixel multiplication device of this utility model;

[0035] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0036] Figure 7 This is a top view of an embodiment of the pixel multiplication device of this utility model;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Fixing screws; 2. Limiting washers; 3. Fixing washers;

[0039] 4. Spring clip; 41. Second light-transmitting hole; 42. Movable piece; 43. First straight beam; 44. Second straight beam; 45. Fixing piece; 46. Fixing hole;

[0040] 5. Magnet; 6. Lens; 7. Mount; 8. Drive board; 81. First light-transmitting hole. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] This utility model discloses a pixel multiplication device, such as... Figure 1 , Figure 2 , Figure 3As shown, it includes a fixing screw 1, a limiting washer 2, a fixing washer 3, a spring 4, a magnet 5, a lens 6, a fixing base 7, and a drive plate 8.

[0043] The drive board 8 has a square first light-transmitting hole 81 in the center, and a coil is installed inside the drive board 8 to generate an alternating magnetic field.

[0044] There are four fixing bases 7, which are arranged around the first light-transmitting hole 81 and are used to cooperate with the fixing screws 1.

[0045] like Figure 2 , Figure 3 , Figure 4 As shown, the spring piece 4 is square, with a second light-transmitting hole 41 at its center. Each of the four sides of the spring piece 4 has a movable structure. The movable structure includes a movable groove, a movable piece 42, two first straight beams 43, a second straight beam 44, and a fixed piece 45. The movable groove, an open semi-circular groove on the side of the spring piece 4, is used to hold the movable piece 42. The movable piece 42 is a semi-circular ring, with a gap between its outer edge and the movable groove. The midpoint of the outer edge of the semi-circular ring is fixedly connected to the bottom of the movable groove. Both ends of the semi-circular ring of the movable piece 42 are connected to one end of each of the first straight beams 43. The other ends of the two first straight beams 43 are connected to one end of each of the two second straight beams 44. The two first straight beams 43 and the two second straight beams 44 are located on the same straight line; the first straight beams 43 and the second straight beams 44 are arranged parallel to each other, with a gap between them.

[0046] like Figure 4 As shown, the inner side of the semi-circular ring of the movable piece 42 serves as a fixing groove, which is a circular groove open on one side. The fixing piece 45 is circular, and there is a gap between one side of the fixing piece 45 and the fixing groove. The other side of the fixing piece 45 is fixedly connected to the other end of the two second straight beams 44. A fixing hole 46 is provided at the center of the fixing piece 45. The position of the fixing hole 46 corresponds one-to-one with the position of the fixing seat 7 on the drive plate 8.

[0047] like Figure 5 As shown, there are eight magnets 5, which are respectively adhered to the lower part of the spring piece 4 and close to the movable structure. A gap is maintained between the magnets 5 and the drive plate 8. Two magnets 5 are distributed at both ends of the movable slot on each side. The magnets 5 are located between the side of the spring piece 4 and the drive plate 8, and are used to deflect the spring piece 4 under the action of an alternating magnetic field.

[0048] The size of lens 6 is larger than that of the second light-transmitting aperture 41 and smaller than that of the first light-transmitting aperture 81. Lens 6 is adhered to the lower surface of the spring 4 and placed in the first light-transmitting aperture 81. A gap is maintained between lens 6 and the first light-transmitting aperture 81 to facilitate the deflection of lens 6 within the first light-transmitting aperture 81 under the action of the spring 4.

[0049] like Figure 1 , Figure 6 As shown, the fixing shim 3 is annular and is positioned above the fixing piece 45 of the spring piece 4. The outer diameter of the fixing shim 3 is smaller than the outer diameter of the fixing piece 45, but larger than the diameter of the fixing hole 46. When the movable structure of the spring piece 4 moves upward, it allows the movable piece 42 to pass over the fixing shim 3, preventing the fixing shim 3 from interfering with the movement of the spring piece 4.

[0050] like Figure 1 , Figure 6 As shown, the limiting shim 2 is positioned above the fixed shim 3. The limiting shim 2 is a circular structure with one side being a chord edge. The chord edge of the limiting shim 2 is parallel to the second straight beam 44. The outer diameter of the limiting shim 2 is larger than the diameter of the fixed groove but smaller than the outer diameter of the movable piece 42. The limiting shim 2 can cover most of the area of ​​the movable piece 42, so that when the movable piece 42 moves upward past the fixed shim 3, it can be limited by the limiting shim 2, thereby limiting the maximum range of motion of the spring piece 4.

[0051] The fixing screw 1 passes through the limiting washer 2, the fixing washer 3 and the fixing hole 46 in sequence, and then is threaded into the corresponding fixing seat 7 to realize the connection between the spring 4 and the drive plate 8.

[0052] Working process: The built-in coil of the drive board 8 generates an alternating magnetic field. Driven by the alternating magnetic field, the magnet 5, through the movable structure of the spring 4, drives the side of the spring 4 to move upward or downward, causing the spring 4 to deflect around the X-axis or Y-axis. This, in turn, causes the lens 6 to vibrate rapidly, changing the position of the light passing through the lens 6, thereby increasing the display resolution. Figure 7 As shown, the X-axis and Y-axis are the straight lines containing the two mutually perpendicular axes of symmetry of the spring piece 4.

[0053] By adding a limiting shim 2 and a fixing shim 3, this invention ensures that when the spring 4 rotates upward, it can only reach the contact position between the spring 4 and the limiting shim 2. Even under vibration or impact conditions, the rotation range of the spring 4 will not exceed that of the limiting shim 2, thereby improving the reliability of the device and enabling it to better adapt to the vehicle environment.

Claims

1. A pixel multiplication device, comprising a spring (4), a lens (6), a drive plate (8), a plurality of fixing screws (1), a magnet (5), and a fixing base (7), characterized in that: It also includes multiple limiting gaskets (2) and fixing gaskets (3); The drive plate (8) has a first light-transmitting hole (81) at its center, and a coil is provided inside the drive plate (8) to generate an alternating magnetic field; The spring (4) has a second light-transmitting hole (41) in the center, and multiple movable structures are respectively provided on the side of the spring (4); multiple fixed seats (7) are respectively arranged around the first light-transmitting hole (81) and correspond to the positions of multiple movable structures, and are used to cooperate with the fixing screw (1) to fix the multiple movable structures. Multiple magnets (5) are respectively attached to the lower part of the spring sheet (4) and close to the position of the movable structure; there is a gap between the magnet (5) and the drive plate (8) to drive the movable structure to move upward or downward under the action of the alternating magnetic field, so that the spring sheet (4) deflects. The size of the lens (6) is larger than the size of the second light-transmitting hole (41) and smaller than the size of the first light-transmitting hole (81). The lens (6) is attached to the lower surface of the spring sheet (4) and placed in the first light-transmitting hole (81). A gap is maintained between the lens (6) and the first light-transmitting hole (81) so that it can be deflected in the first light-transmitting hole (81) under the action of the spring sheet (4). Multiple fixed pads (3) are disposed above the movable structure, and multiple limiting pads (2) are disposed above the multiple fixed pads (3) respectively, for limiting the movable structure when it moves upward through the fixed pads (3); The multiple fixing screws (1) pass through the corresponding limiting washer (2), fixing washer (3) and movable structure in sequence, and are fixed in the corresponding fixing seat (7).

2. The pixel multiplication device according to claim 1, characterized in that: The movable structure includes a movable groove, a movable piece (42), two first straight beams (43), a second straight beam (44), and a fixed piece (45); The movable groove is located on the side of the spring piece (4) and is an open semi-circular groove; The movable piece (42) is a semi-circular ring. The outer edge of the semi-circular ring of the movable piece (42) maintains a gap with the movable groove. The midpoint of the outer edge of the semi-circular ring is fixedly connected to the bottom of the movable groove. The two ends of the semi-circular ring of the movable piece (42) are respectively connected to one end of the two first straight beams (43). The other ends of the two first straight beams (43) are respectively connected to one end of the two second straight beams (44). The two first straight beams (43) are located on the same straight line, and the two second straight beams (44) are located on the same straight line. The first straight beams (43) and the second straight beams (44) are arranged in parallel, and there is a gap between them. The inner side of the semi-circular ring of the movable piece (42) serves as a fixing groove. The fixing piece (45) is circular. One side of the fixing piece (45) maintains a gap with the fixing groove, and the other side is fixedly connected to the other end of the two second straight beams (44). The fixing plate (45) has a fixing hole (46) at its center. The fixing hole (46) corresponds to the position of the fixing seat (7) and is used to pass through the fixing screw (1).

3. The pixel multiplication device according to claim 2, characterized in that: The fixing pad (3) is annular and is coaxially arranged above the fixing plate (45); The outer diameter of the fixing pad (3) is smaller than that of the fixing piece (45) and larger than that of the fixing hole (46). It is used to make the movable piece (42) pass over the fixing pad (3) when the spring piece (4) moves upward, so as to prevent the fixing pad (3) from interfering with the movement of the spring piece (4).

4. A pixel multiplication device according to claim 3, characterized in that: The limiting pad (2) is a circular structure with a chord edge on one side, and is coaxially mounted on the fixing pad (3); The chord edge of the limiting gasket (2) remains parallel to the second straight beam (44); The outer diameter of the limiting pad (2) is greater than the diameter of the fixed groove and less than the outer diameter of the movable piece (42), so that the movable piece (42) is limited when it moves upward past the fixed pad (3); The fixing screw (1) passes through the limiting washer (2), the fixing washer (3) and the fixing hole (46) in sequence and is fixedly connected in the corresponding fixing seat (7).

5. A pixel multiplication device according to claim 4, characterized in that: The first light-transmitting hole (81), the second light-transmitting hole (41), the lens (6), and the spring (4) are all square; the spring (4) deflects around the X-axis or the Y-axis, which are the two mutually perpendicular axes of symmetry of the spring (4); there are four movable structures, which are respectively set in the middle of the four sides of the spring (4).

6. A pixel multiplication device according to claim 5, characterized in that: The number of magnets is 8, and two magnets (5) are provided below each side of the spring piece (4), and the two magnets (5) are distributed at both ends of the movable groove.

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