Active alignment device
By designing an active alignment device including a first adjustment mechanism and a second adjustment mechanism, the problem that the prior art cannot meet the demand for a camera with a shorter focus distance is solved, and the focus distance is shortened, and it is suitable for a camera with a shorter focus distance.
Patent Information
- Application Number
- CN202420376630.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing optical active alignment devices cannot meet the needs of cameras with shorter focus distances, because the first fixture takes up space, resulting in the shortest distance between the test board and the chip being 30cm, which cannot adapt to the shorter focus distances.
An active alignment device is designed, including a first adjustment mechanism for clamping the lens and adjusting its displacement attitude. The second adjustment mechanism includes a clamping arm and a carrier, the clamping arm is used to clamp the chip and adjusting its angular attitude. The carrier is connected to the one end of the clamping arm away from the chip, and is provided with an opening for light to pass through the side of the carrier. The first adjustment mechanism is connected to one side of the carrier, the test plate is arranged on the side of the carrier away from the clamping arm, and the light emitting plate is arranged on the side of the test plate facing away from the carrier, and is used to emit light passing through the test plate, the opening and the lens and reach the chip.
By shortening the distance between the test board and the chip and shortening the focus distance, the active alignment device is suitable for cameras with shorter focus distances, such as gastroenteroscope cameras and oraloscope cameras.
Smart Images
Figure CN222619722U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of camera technology, and in particular to an active alignment device. Background Art
[0002] In the semiconductor manufacturing process, it is usually necessary to use optical active alignment equipment, namely AA (Active Alignment Machine) process. AA process can adjust the six degrees of freedom of the camera to achieve the alignment function.
[0003] The existing AA process is to clamp the lens with a first fixture and adjust the angle of the lens, clamp the chip with a second fixture and adjust the displacement of the chip, and the test board is set on the first fixture and faces the lens. However, since the first fixture takes up a certain space and distance, the shortest distance between the test board and the chip is 30cm, which cannot meet the needs of some cameras with a shorter distance between the test board and the chip (i.e., a shorter focusing distance). Utility Model Content
[0004] In view of the above, it is necessary to propose an active alignment device to actively focus a camera with a short focusing distance.
[0005] An embodiment of the present application provides an active alignment device, comprising: a first adjustment mechanism, used to clamp a lens and adjust the displacement posture of the lens; a second adjustment mechanism, comprising a clamping arm and a carrier, the clamping arm being used to clamp a chip and adjust the angular posture of the chip, the carrier being connected to an end of the clamping arm away from the chip and having an opening for light to pass through, wherein the first adjustment mechanism is connected to one side of the carrier; a test board, disposed on a side of the carrier away from the clamping arm, and used to correspond to the chip setting, wherein the first adjustment mechanism is connected between the test board and the chip; a light-emitting board, disposed on a side of the test board away from the carrier, used to emit light that passes through the test board, the opening and the lens and reaches the chip, so that the first adjustment mechanism adjusts the displacement posture of the lens, and the clamping arm adjusts the angular posture of the chip, so as to achieve active alignment of the lens and the chip.
[0006] The above-mentioned active alignment device enables the clamping arm to clamp the chip and adjust the angular posture of the chip, and the first adjustment mechanism to clamp the lens and adjust the displacement posture of the lens. Since the test board is arranged on the side of the carrier away from the clamping arm, the distance between the test board and the chip can be shortened, and the focusing distance can be shortened. It is suitable for cameras with shorter focusing distances.
[0007] In some embodiments, the active alignment device further comprises a fixing member, the fixing member is arranged on a side of the carrier away from the clamping arm, the fixing member is provided with a avoidance hole at a position corresponding to the opening, and the outer peripheral wall of the test board is located in the avoidance hole. In this way, the test board can be confined in the avoidance hole of the fixing member to prevent the test board from shaking during active alignment and affecting the active alignment effect.
[0008] In some embodiments, a groove is formed on the hole wall of the avoidance hole near one end of the carrier, and the outer peripheral wall of the test board is located in the groove. Thus, by clamping the test board in the groove, the position of the test board can be further restricted to prevent the test board from moving in the optical axis direction of the lens.
[0009] In some embodiments, the light-emitting board is disposed on a side of the fixing member facing away from the supporting member, and a gap exists between the light-emitting board and the test board in the direction of the optical axis of the lens.
[0010] In this way, the test board and the light-emitting board can be prevented from contacting each other, thereby preventing the two from being damaged due to friction.
[0011] In some embodiments, the test board includes a transparent layer, and a light-proof preset pattern is provided on the transparent layer. Thus, when the light emitted by the light-emitting board reaches the chip, the chip can sense the preset pattern on the test board and process it, so that the clamping arm clamps the chip and adjusts the angle of the chip, and the first adjustment mechanism clamps the lens and adjusts the displacement of the lens, thereby realizing active alignment of the lens and the chip.
[0012] In some embodiments, the test board includes a transparent layer and a black bottom layer, the black bottom layer is arranged on one side of the transparent layer, and a light-transmitting preset pattern is arranged on the black bottom layer. Thus, when the light emitted by the light-emitting board reaches the chip, the chip can sense the preset pattern on the test board and process it, so that the clamping arm clamps the chip and adjusts the angle posture of the chip, and the first adjustment mechanism clamps the lens and adjusts the displacement posture of the lens, thereby realizing active alignment of the lens and the chip.
[0013] In some embodiments, the preset pattern is a pattern formed by at least one line, rectangle, circle, diamond or triangle. In this way, the chip can sense whether the preset pattern has consistent clarity, and when the clarity is inconsistent, the clamping arm clamps the chip and adjusts the chip's angle posture, and the first adjustment mechanism clamps the lens and adjusts the displacement posture of the lens to make the preset pattern have consistent clarity.
[0014] In some embodiments, the first adjustment mechanism includes at least two linear modules, and the at least two linear modules are used to clamp the lens and drive the lens to move in a first direction, a second direction, and a third direction to adjust the displacement posture of the lens, and the first direction, the second direction, and the third direction are perpendicular to each other. In this way, the first adjustment mechanism can adjust the displacement posture of the lens.
[0015] In some embodiments, the clamping arm includes at least two clamping modules connected to the carrier, and at least two clamping modules are close to each other at one end away from the carrier to clamp the chip and drive the chip to rotate in the first direction, the second direction and the third direction to adjust the angle of the chip, and the first direction, the second direction and the third direction are perpendicular to each other. In this way, the clamping arm can adjust the angle of the chip.
[0016] In some embodiments, the test board and the light-emitting board are arranged in parallel, so as to ensure the projection effect of the preset pattern on the test board on the chip, so that the chip can better sense the preset pattern on the test board.
[0017] In some embodiments, the distance between the end of the clamping arm away from the carrier and the test plate is in the range of 1 cm to 10 cm. In this way, the active alignment device can be applied to cameras with shorter focusing distances, such as gastrointestinal endoscope cameras and oral endoscope cameras. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an active alignment device proposed in one embodiment of the present application.
[0019] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the active alignment device shown.
[0020] Figure 3 yes Figure 1 The cross-sectional structure diagram of the active alignment device along line AA is shown.
[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of an active alignment device along line AA proposed in another embodiment of the present application.
[0022] Figure 5 yes Figure 1 A schematic structural diagram of a test board in an active alignment device is shown.
[0023] Figure 6 yes Figure 1 A schematic structural diagram of another test board in the active alignment device is shown.
[0024] Figure 7 yes Figure 1 A schematic structural diagram of another test board in the active alignment device is shown.
[0025] Main component symbols
[0026] Active alignment device 100
[0027] The first adjustment mechanism 10
[0028] Linear module 12
[0029] The second adjustment mechanism 20
[0030] Clamping arm 21
[0031] Clamping module 211
[0032] Carrier 22
[0033] Opening 221
[0034] Test board 30
[0035] Transparent layer 31
[0036] Preset pattern 311
[0037] Black bottom layer 32
[0038] Luminous board 40
[0039] Fixing 50
[0040] Avoidance hole 52
[0041] Groove 54
[0042] Lens 200
[0043] Chip 300 DETAILED DESCRIPTION
[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0045] The embodiments of the present application are further described below in conjunction with the accompanying drawings.
[0046] See also Figure 1 and Figure 2The embodiment of the present application provides an active alignment device 100 for actively aligning a lens 200 and a chip 300. Specifically, the active alignment device 100 includes a first adjustment mechanism 10, a second adjustment mechanism 20, a test board 30 and a light-emitting board 40.
[0047] Please also see Figure 3 The first adjustment mechanism 10 is used to clamp the lens 200 and adjust the displacement posture of the lens 200. The second adjustment mechanism 20 includes a clamping arm 21 and a carrier 22. The clamping arm 21 is used to clamp the chip 300 and adjust the angle posture of the chip 300. The carrier 22 is connected to the end of the clamping arm 21 away from the chip 300 and is arranged opposite to the lens 200. The carrier 22 is provided with an opening 221 at the position corresponding to the lens 200, wherein the first adjustment mechanism 10 is connected to one side of the carrier 22. The test board 30 is arranged on the side of the carrier 22 away from the clamping arm 21, and is used to be arranged corresponding to the chip 300, wherein the first adjustment mechanism 10 is connected between the test board 30 and the chip 300. The light-emitting panel 40 is arranged on the side of the test board 30 away from the carrier 22, and is used to emit light that passes through the test board 30, the opening 221 and the lens 200 and reaches the chip 300, so that the first adjustment mechanism 10 adjusts the displacement posture of the lens 200 and the clamping arm 21 adjusts the angular posture of the chip 300, so as to realize active alignment of the lens 200 and the chip 300.
[0048] The above-mentioned active alignment device 100 enables the clamping arm 21 to clamp the chip 300 and adjust the angle posture of the chip 300, and the first adjustment mechanism 10 clamps the lens 200 and adjusts the displacement posture of the lens 200. Since the test board 30 is arranged on the side of the carrier 22 away from the clamping arm 21, the distance between the test board 30 and the chip 300 can be shortened, the focusing distance can be shortened, and it is suitable for cameras with shorter focusing distances.
[0049] In some embodiments, the active alignment device 100 further includes a fixing member 50, which is a plate-shaped structure. The fixing member 50 is fixedly arranged on the side of the carrier 22 away from the clamping arm 21. The fixing member 50 is provided with an avoidance hole 52 at a position corresponding to the opening 221, and the outer peripheral wall of the test board 30 is located in the avoidance hole 52. It can be understood that the outer peripheral wall of the test board 30 can abut against the hole wall of the avoidance hole 52, but is not limited thereto. In this way, the test board 30 can be restricted in the avoidance hole of the fixing member 50 to prevent the test board 30 from shaking during active alignment and affecting the active alignment effect.
[0050] See also Figure 4In some embodiments, a groove 54 is formed on one end of the hole wall of the avoidance hole 52 near the carrier 22, and the outer peripheral wall of the test board 30 is located in the groove 54. It can be understood that the outer peripheral wall of the test board 30 can abut against the groove wall of the groove 54, but is not limited thereto. In this way, by clamping the test board 30 in the groove 54, the position of the test board 30 can be further limited to prevent the test board 30 from moving in the optical axis direction of the lens 200.
[0051] In some embodiments, the light emitting board 40 is disposed on a side of the fixing member 50 away from the carrier 22 , and a gap exists between the light emitting board 40 and the test board 30 in the optical axis direction of the lens 200 .
[0052] In this way, the test board 30 and the light-emitting board 40 can be prevented from contacting each other, thereby preventing the two from being damaged due to friction.
[0053] See also Figure 5 and Figure 6 In some embodiments, the test board 30 includes a transparent layer 31, and a light-proof preset pattern 311 is provided on the transparent layer 31. Figure 5 The preset pattern 311 is an array-shaped pattern formed by a plurality of opaque circles. Figure 6 The preset pattern 311 is a line pattern formed by a plurality of opaque rectangles. In this embodiment, the transparent layer 31 is glass or plastic, but is not limited thereto. In this way, when the light emitted by the light-emitting board 40 reaches the chip 300, the chip 300 can sense the preset pattern 311 on the test board 30 and process it, so that the clamping arm 21 clamps the chip 300 and adjusts the angle posture of the chip 300, and the first adjustment mechanism 10 clamps the lens 200 and adjusts the displacement posture of the lens 200, thereby realizing active alignment of the lens 200 and the chip 300.
[0054] See also Figure 7 In some embodiments, the test board 30 includes a transparent layer 31 and a black matrix layer 32, the black matrix layer 32 is disposed on one side of the transparent layer 31, and a light-transmitting preset pattern 311 is disposed on the black matrix layer 32. Figure 7 The preset pattern 311 in the test board 30 is a pattern in an array formed by a plurality of light-transmitting circles. In the present embodiment, the black bottom layer 32 is an ink layer, but is not limited thereto. In this way, when the light emitted by the light-emitting board 40 reaches the chip 300, the chip 300 can sense the preset pattern 311 on the test board 30 and process it, so that the clamping arm 21 clamps the chip 300 and adjusts the angle posture of the chip 300, and the first adjustment mechanism 10 clamps the lens 200 and adjusts the displacement posture of the lens 200, thereby realizing active alignment of the lens 200 and the chip 300.
[0055] In some embodiments, the preset pattern 311 is a pattern formed by at least one line, rectangle, circle, diamond or triangle. In this way, the chip 300 can sense whether the preset pattern 311 has a consistent definition, and when the definition is inconsistent, the clamping arm 21 clamps the chip 300 and adjusts the angle of the chip 300, and the first adjustment mechanism 10 clamps the lens 200 and adjusts the displacement of the lens 200, so that the preset pattern 311 has a consistent definition, thereby realizing active alignment of the lens 200 and the chip 300.
[0056] See also Figure 2 and Figure 4 In some embodiments, the first adjustment mechanism 10 includes at least two linear modules 12 arranged opposite to each other, and the at least two linear modules 12 are used to clamp the lens 200 and drive the lens 200 to move in the first direction, the second direction and the third direction to adjust the displacement posture of the lens 200. In this way, the first adjustment mechanism 10 can adjust the displacement posture of the lens 200. In this embodiment, the linear module 12 is a linear slide or a robotic arm. Among them, the first direction is defined as the X-axis direction, the second direction is defined as the Y-axis direction, and the third direction is defined as the Z-axis direction. In this embodiment, there are two linear modules 12. It can be understood that in other embodiments, there can be three linear modules 12, but it is not limited to this.
[0057] In some embodiments, the clamping arm 21 includes at least two clamping modules 211 that are relatively arranged and connected to the carrier 22. The clamping modules 211 can be fixedly connected to the carrier 22, or can be movably connected to the carrier 22. At least two clamping modules 211 are close to each other at one end away from the carrier 22 to clamp and drive the chip 300 to rotate in the first direction, the second direction and the third direction to adjust the angle posture of the chip 300. In this way, the clamping arm 21 can adjust the angle posture of the chip 300. In this embodiment, the clamping module 211 is a mechanical arm, and there are two clamping modules 211. It can be understood that in other embodiments, there are three or four clamping modules 211, but it is not limited to this.
[0058] In some embodiments, the test board 30 and the light-emitting board 40 are arranged in parallel. In this way, the projection effect of the preset pattern 311 on the test board 30 on the chip 300 can be ensured, so that the chip 300 can better sense the preset pattern 311 on the test board 30. In this embodiment, the light-emitting board 40 is a backlight board for emitting light.
[0059] In some embodiments, the distance between the end of the clamping arm 21 away from the carrier 22 and the test board 30 is in the range of 1 cm to 10 cm. In this way, the active alignment device 100 can be applied to cameras with shorter focusing distances, such as gastrointestinal endoscope cameras and oral endoscope cameras.
[0060] The implementation process of the active alignment device 100 of the embodiment of the utility model is as follows:
[0061] At least two clamping modules 211 have ends away from the carrier 22 close to each other to clamp the chip 300, and at least three linear modules 12 clamp the lens 200;
[0062] The light-emitting board 40 emits light that passes through the test board 30, the opening 221 and the lens 200 and reaches the chip 300. The chip 300 controls at least two clamping modules 211 to drive the chip 300 to rotate in the first direction, the second direction and the third direction according to the preset pattern 311 on the sensed test board 30 to adjust the angular posture of the chip 300, and controls at least two linear modules 12 to drive the lens 200 to move in the first direction, the second direction and the third direction to adjust the displacement posture of the lens 200, thereby realizing active alignment of the lens 200 and the chip 300.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.
Claims
1. An active alignment device, characterized in that: include: A first adjustment mechanism, used for clamping the lens and adjusting the displacement posture of the lens; The second adjustment mechanism comprises a clamping arm and a carrier, wherein the clamping arm is used to clamp the chip and adjust the chip's angle posture, and the carrier is connected to an end of the clamping arm away from the chip and is provided with an opening for light to pass through, wherein the first adjustment mechanism is connected to one side of the carrier; A test board is arranged on a side of the carrier away from the clamping arm and is used to be arranged corresponding to the chip, wherein the first adjustment mechanism is connected between the test board and the chip; The light-emitting board is arranged on the side of the test board away from the carrier, and is used to emit light that passes through the test board, the opening and the lens and reaches the chip, so that the first adjustment mechanism adjusts the displacement posture of the lens and the clamping arm adjusts the angular posture of the chip to achieve active alignment of the lens and the chip.
2. The active alignment device according to claim 1, characterized in that: The active alignment device also includes a fixing member, which is arranged on a side of the supporting member away from the clamping arm. The fixing member is provided with an avoidance hole at a position corresponding to the opening, and the outer peripheral wall of the test plate is located in the avoidance hole.
3. The active alignment device according to claim 2, characterized in that: A groove is formed on the hole wall of the avoidance hole at one end close to the bearing member, and the outer peripheral wall of the test plate is located in the groove.
4. The active alignment device according to claim 2 or 3, characterized in that: The light-emitting board is arranged on a side of the fixing member away from the bearing member, and a gap exists between the light-emitting board and the test board in the direction of the optical axis of the lens.
5. The active alignment device according to claim 1, characterized in that: The test plate comprises a transparent layer, on which a light-proof preset pattern is arranged.
6. The active alignment device according to claim 1, characterized in that: The test board comprises a transparent layer and a black bottom layer, wherein the black bottom layer is arranged on one side of the transparent layer, and a light-transmitting preset pattern is arranged on the black bottom layer.
7. The active alignment device according to claim 1, characterized in that: The first adjustment mechanism includes at least two linear modules, and the at least two linear modules are used to clamp the lens and drive the lens to move in a first direction, a second direction and a third direction to adjust the displacement posture of the lens. The first direction, the second direction and the third direction are perpendicular to each other.
8. The active alignment device according to claim 1, characterized in that: The clamping arm includes at least two clamping modules connected to the carrier, and at least two clamping modules are close to each other at one end away from the carrier to clamp and drive the chip to rotate in the first direction, the second direction and the third direction, so as to adjust the angle posture of the chip, and the first direction, the second direction and the third direction are perpendicular to each other.
9. The active alignment device according to claim 4, characterized in that: The test board and the light-emitting board are arranged in parallel.
10. The active alignment device according to claim 1, characterized in that: The distance between the end of the clamping arm away from the carrier and the test plate is in a range of 1 cm to 10 cm.