Optical adjustment device and method

Abstract

The application provides an optical adjusting device and method, which comprises a first bearing part and an optical module; a plurality of tension springs are arranged in a non-collinear manner and connected with the first bearing part and a second bearing part respectively; in a first adjusting unit, a lower part of a spherical first rolling part is arranged in a limiting groove of a fixed block, and an upper part is arranged in a first linear groove of a first limiting part; a first linear driving module is fixed on the first bearing part, a first telescopic rod is in contact with the first rolling part; a first spring is connected with the first linear driving module and the fixed block; in a second adjusting unit, a spherical second rolling part is arranged in a limiting channel of a second limiting part and in contact with a stop block, the stop block is fixed on the second bearing part; a second linear driving module is fixed on the first bearing part, a second telescopic rod is in contact with the second rolling part; a second spring is connected with the second linear driving module and the stop block; an included angle between the second telescopic rod and the first telescopic rod is an acute angle or a right angle. The application has the advantages of high adjusting precision.

Description

Technical Field

[0001] This invention relates to a chip electrophoresis bioanalyzer, and more particularly to an optical adjustment device and method. Background Technology

[0002] Chip electrophoresis bioanalyzer is a microfluidic chip-based electrophoresis technology that performs conventional capillary electrophoresis on a chip. It uses glass, quartz, or various polymer materials to fabricate micron-level channels and uses a high-voltage DC electric field as the driving force to introduce, separate, and detect samples.

[0003] The chip electrophoresis bioanalyzer comprises a sample module, an electrophoresis module, an optical module, and a data processing module. Among these, the optical module is the most crucial part of the entire system and is the core of its operation. The optical module consists of an autofocusing motion device mounted on the detection optical path module. The design requirements for the autofocusing motion device are a simple and compact structure, high control precision, and flexible multi-degree-of-freedom motion control.

[0004] To achieve motion, common transmission mechanisms include synchronous belt mechanisms, gear mechanisms, lead screws, and connecting rods. The typical motion control accuracy is ±0.1mm, far exceeding the required ±2μm accuracy. Furthermore, the focusing mechanism must have four-axis motion control. Therefore, the high-cost helical gear transmission pair / box is unsuitable for optical motion platforms, which often suffer from complex mechanisms, insufficient control flexibility, and high manufacturing requirements, leading to higher costs. Summary of the Invention

[0005] To address the shortcomings of the existing technical solutions, the present invention provides an optical adjustment device.

[0006] The objective of this invention is achieved through the following technical solution: An optical adjustment device includes a first carrier and an optical module, wherein the optical module is disposed on the first carrier; the optical adjustment device further includes: The second carrier and multiple tension springs are arranged non-collinearly and are respectively connected to the first carrier and the second carrier. The first adjustment unit includes a fixed block, a first rolling element, a first limiting element, a first spring, and a first linear drive module. The lower part of the spherical first rolling element is disposed in the limiting groove of the fixed block, and the upper part is disposed in the first linear groove of the first limiting element. The fixed block is fixed to a second bearing member, and the first limiting element is fixed to a first bearing member. The first linear drive module is fixed to the first bearing member, and a first telescopic rod abuts against the first rolling element. The first spring connects the first linear drive module and the fixed block. The second adjustment unit includes a stop block, a second limiting member, a second rolling member, a second spring, and a second linear drive module. The spherical second rolling member is located within the limiting channel of the second limiting member and contacts the stop block, which is fixed to the second bearing member. The second linear drive module is fixed to the first bearing member, and the second telescopic rod pushes against the second rolling member. The second spring connects the second linear drive module and the stop block. The angle between the second telescopic rod and the first telescopic rod is an acute angle or a right angle.

[0007] Another objective of this invention is to provide an optical adjustment method, which is achieved through the following technical solution: According to the optical adjustment method of the optical adjustment device of the present invention, the adjustment method includes the operation of the first adjustment unit and / or the second adjustment unit, wherein the operation mode of the first adjustment unit is as follows: When the first telescopic rod becomes longer or shorter, the length of the first spring is adjusted accordingly. The first rolling element rolls in the first straight groove, causing the first bearing element to shift relative to the second bearing element, thereby adjusting the position of the optical module. The second adjustment unit operates as follows: The length of the second telescopic rod changes as the second spring shortens, causing the first bearing member to rotate forward or backward around the first rolling member. The first rolling member rolls in the first straight groove, and the second rolling member rolls on the stop block, thereby adjusting the position of the optical module in two dimensions.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. High adjustment precision; The first adjustment unit is used to realize the translation of the first carrier relative to the second carrier, the second adjustment is used to realize the rotation of the first carrier relative to the second rolling element, and the third adjustment unit is used to realize the rotation of the first carrier relative to the second carrier. With the high-precision movement of the three linear drive modules, the high-precision movement of the first carrier in four dimensions of ±2 micrometers can be effectively realized. In the first adjustment unit, the first rolling element only rolls in its original position, so that when the first telescopic rod extends or retracts, the first rolling element moves relative to the first straight groove. The parallel first limiting element and the first telescopic rod ensure that the first bearing element translates relative to the second bearing element. At the same time, the first rolling element serves as the pivot for the rotation of the first bearing element. In the second and third adjustment units, the rolling element is constrained within the limiting element, and the telescopic rod of the linear drive module is used to push against the rolling element, so that the rolling element rolls on the second bearing element or the stop block, thereby achieving precise position adjustment. 2. Simple structure; Limiting components, rolling components, stops, and linear drive modules are all conventional parts with simple structures and high reliability. When combined into an adjustment unit, they achieve high-precision adjustment. Attached Figure Description

[0009] The disclosure of this invention will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are merely illustrative of the technical solutions of this invention and are not intended to limit the scope of protection of this invention. In the drawings: Figure 1 This is a schematic diagram of the structure of an optical adjustment device according to an embodiment of the present invention; Figure 2 This is another structural schematic diagram of the optical adjustment device according to an embodiment of the present invention. Detailed Implementation

[0010] Figures 1-2 The following description illustrates optional embodiments of the invention to teach those skilled in the art how to implement and reproduce the invention. Some conventional aspects have been simplified or omitted to teach the technical solutions of the invention. Those skilled in the art should understand that variations or substitutions derived from these embodiments will be within the scope of the invention. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the invention. Therefore, the invention is not limited to the optional embodiments described below, but is defined only by the claims and their equivalents.

[0011] Example 1

[0012] The optical adjustment device of the present invention, such as Figures 1-2 As shown, the optical adjustment device includes: A first carrier 11 and an optical module 21, wherein the optical module 21 is disposed on the first carrier 11; The second support member 12 and a plurality of tension springs 31 are arranged non-collinearly and are respectively connected to the first support member 11 and the second support member 12; The first adjustment unit 41 includes a fixed block 44, a first rolling element 45, a first limiting element 43, a first spring 46, and a first linear drive module 42. The lower part of the spherical first rolling element 45 is disposed in the limiting groove of the fixed block 44, and the upper part is disposed in the first linear groove of the first limiting element 43. The fixed block 44 is fixed on the second bearing element 12, and the first limiting element 43 is fixed on the first bearing element 11. The first linear drive module 42 is fixed on the first bearing element 11, and the first telescopic rod pushes against the first rolling element 45. The first spring 46 connects the first linear drive module 42 and the fixed block 44, so that when the first telescopic rod extends or retracts, the length of the first spring 46 changes synchronously, the first rolling element 45 rolls in place, and moves relative to the first limiting element 43, ensuring that the first bearing element 11 translates relative to the second bearing element 12. The second adjustment unit 51 includes a stop 54, a second limiting member 53, a second rolling member 55, a second spring 56, and a second linear drive module 52. The spherical second rolling member 55 is located within the limiting channel of the second limiting member and contacts the stop 54, which is fixed to the second support member 12. The second linear drive module 52 is fixed to the first support member 11, and the second telescopic rod abuts against the second rolling member 55. The second spring 56 connects the second linear drive module 52 and the stop 54. The angle between the second telescopic rod and the first telescopic rod is an acute angle or a right angle. When the second telescopic rod extends or retracts, the length of the second spring 56 changes synchronously. At the same time, the first support member 11 rotates around the first rolling member 45, thereby adjusting the position of the first support member 11 in two dimensions.

[0013] To enable the first support member 11 to rotate relative to the second support member 12, the optical adjustment device further includes a third adjustment unit 61, which comprises: The third limiting member 63 and the third rolling member, the spherical third rolling member is located in the through hole of the third limiting member 63 and contacts the second bearing member 12, the third limiting member 63 is fixed on the first bearing member 11; The third linear drive module 62 is fixed on the first support member 11, and the third telescopic rod pushes against the third rolling member.

[0014] To further confine the second rolling element 55 within the limiting channel, the limiting channel is located within the hole of the second limiting element 53, or the second limiting element 53 has a second straight groove for accommodating the second rolling element 55, and the limiting channel is located between the second straight groove and the second bearing member, or between the second straight groove and the stop block 54.

[0015] To ensure that the first support member 11 translates one-dimensionally relative to the second support member 12, the first straight groove is further defined as a V-shaped groove, extending in a direction parallel to the first telescopic rod, even when the first support member 11 rotates around the first rolling member 45.

[0016] To improve adjustment accuracy and reliability, the first linear drive module 42, the second linear drive module 52, or the third linear drive module 62 further adopts a push rod motor.

[0017] To avoid affecting other components and to reduce the size, the first linear drive module 42, the first limiting member 43, the second limiting member 53, and the second linear drive module 52 are respectively fixed to the lower side of the first support member 11, and the fixing block 44 and the stop block 54 are fixed to the upper side of the second support member 12.

[0018] To prevent the rigid third rolling element from rolling out of the groove on the softer second support member 12 and affecting the adjustment accuracy, a rigid shim 66 is further fixed on the upper side of the second support member 12, and the third rolling element contacts the shim 66.

[0019] To reduce assembly difficulty and improve adjustment reliability, the ends of the first and second telescopic rods are further fixed with extrusion members, and the end face area of ​​the extrusion member that contacts the rolling element is larger than the cross-sectional area of ​​the telescopic rod.

[0020] The optical adjustment method of this embodiment of the invention, that is, the working method of the optical adjustment device of this embodiment, includes the operation of the first adjustment unit 41 and / or the second adjustment unit 51. The first adjustment unit 41 operates as follows: As the first telescopic rod lengthens or shortens, the length of the first spring 46 is adjusted accordingly. The first rolling element 45 rolls in the first straight groove, causing the first bearing element 11 to shift relative to the second bearing element 12, thereby adjusting the position of the optical module 21. The second adjustment unit 51 operates as follows: As the second telescopic rod lengthens or shortens, the length of the second spring 56 is adjusted accordingly, causing the first bearing member 11 to rotate forward or backward around the first rolling member 45. The first rolling member 45 rolls in the first straight groove, and the second rolling member 55 rolls on the stop block 54, thereby adjusting the position of the optical module 21 in two dimensions.

[0021] To provide position adjustment in other dimensions, the adjustment method further includes the operation of a third adjustment unit 61, which operates as follows: The lengthening or shortening of the third telescopic rod causes the angle between the first support member 11 and the second support member 12 to change, thereby adjusting the position of the optical module 21.

[0022] Example 2

[0023] Examples of the application of the optical adjustment device and method in an electrophoresis apparatus according to embodiments of the present invention.

[0024] In this application example, such as Figure 1 As shown, the first and second support members each adopt a plate-like structure. The light source is disposed in the optical module 21, which is located above the first support member 11. The second support member 12 is made of aluminum alloy. The first and second support members 11 are connected by three non-collinear tension springs 31. The second support member 12 is horizontally fixed. By adjusting the position of the first support member 11, the emitted light from the light source accurately passes through the extremely small slit downstream.

[0025] like Figure 2 As shown, in the arrangement of the first adjustment unit 41, the fixing block 44 is fixed to the upper side of the second support member 12, including a hemispherical groove (the steel ball and the groove are tightly fitted) that accommodates the first steel ball. The first linear drive module 42 is fixed to the lower side of the first support member 11, and uses a push rod motor to drive the first telescopic rod to extend and retract, thereby providing linear push. An extrusion member is installed at the end of the first telescopic rod. The area of ​​the end face of the extrusion member that contacts the first steel ball 45 is larger than the cross-sectional area of ​​the first telescopic rod, so that the extrusion member stably extrudes the first steel ball, regardless of whether the first telescopic rod is translated or rotated. The first limiting member 43 is fixed to the lower side of the first support member 11, and the lower side of the first limiting member 43 has a V-shaped first linear groove parallel to the first telescopic rod. Under the tension of the tension spring 31, the first steel ball 45 is clamped between the first linear groove and the hemispherical groove, so that the first steel ball 45 can only roll in place and has no translation. The two ends of the first spring 46 are respectively connected to the fixing block 44 and the first linear drive module 42. In its original state, the first telescopic rod and the first limiting member are set horizontally.

[0026] In the second adjustment unit 51, the stop 54 is vertically positioned on the upper side of the second support member 12, including a vertical portion and a horizontal portion. The second limiting member 53 is the same as the first limiting member 43, fixed on the lower side of the first support member 11. The lower side of the second limiting member 53 has a V-shaped second straight groove. Under the tension of the tension spring 31, the second steel ball 55 is clamped in the limiting channel formed between the second straight groove and the horizontal portion of the stop 54, causing the second steel ball 55 to translate within the straight limiting channel and roll on the vertical portion, generating displacement. The second linear drive module 52 is fixed on the lower side of the first support member and uses a push rod motor to drive the second telescopic rod to extend and retract, thereby providing linear propulsion. An extrusion member is installed at the end of the second telescopic rod, and the area of ​​the end face of the extrusion member contacting the second steel ball 55 is larger than the cross-sectional area of ​​the second telescopic rod. The second spring 56 connects the second linear drive module 52 and the stop 54. When the second telescopic rod extends or retracts, it pushes the second steel ball 55 to move within the limiting channel. The first bearing member 11 moves relative to the stop block 54 and rotates around the first steel ball 45. At the same time, the second steel ball 55, which is in the hole, rolls on the stop block 54 and has displacement. The angle between the first telescopic rod and the second telescopic rod is a right angle.

[0027] In the third adjustment unit 61, the third limiting member 63 is fixed to the lower side of the first bearing member 11, and its end has a hole for accommodating the third steel ball. The third steel ball can only translate or roll within the hole along its central axis (without axial movement). A steel pad 66 is provided on the upper side of the second bearing member 12 to support the third steel ball. The third linear drive module 62 is fixed to the upper side of the first bearing member 11 and uses a push rod motor to drive the third telescopic rod to extend and retract. The third telescopic rod passes through the first bearing member 11 and contacts the third steel ball, thereby pushing the third steel ball linearly. An extrusion member 65 is installed at the end of the third telescopic rod, and the area of ​​the end face of the extrusion member 65 that contacts the third steel ball is larger than the cross-sectional area of ​​the third telescopic rod. When the third telescopic rod extends and retracts, it pushes the first bearing member 11 to rotate relative to the second bearing member 12, and the third steel ball rolls on the pad 66 and has displacement.

[0028] The optical adjustment method of this invention, that is, the working method of the optical adjustment device of this embodiment, includes: The first adjustment unit 41 operates as follows: When the first telescopic rod becomes longer or shorter, the length of the first spring 46 is adjusted accordingly. The first steel ball 45 rolls in place in the first straight groove and has relative displacement, causing the first bearing member 11 to translate relative to the second bearing member 12 in the X-axis direction, thereby adjusting the position of the optical module 21. The second adjustment unit operates as follows: As the second telescopic rod lengthens or shortens, the length of the second spring 56 is adjusted accordingly, causing the first bearing member 11 to rotate around the first steel ball 45 in the forward or reverse direction. At the same time, the first telescopic rod and the first limiting member 43 rotate around the first steel ball 45 in the forward or reverse direction, and the second steel ball 55 rolls on the stop block 54 and is displaced, thereby adjusting the position of the optical module 21 in the plane XY in two dimensions.

[0029] The third adjustment unit 61 operates as follows: The lengthening or shortening of the third telescopic rod causes the included angle between the first bearing member 11 and the second bearing member 12 to change. The third steel ball rolls on the pad 66 and is displaced, thereby adjusting the position of the optical module 21 in the Z-axis direction.

[0030] In the specific position adjustment of optical module 21, the operation of the above three adjustment units is selected so that the emitted light from the light source can accurately pass through the downstream tiny slit. Given the very small displacement, the second steel ball 55 and the third steel ball will not disengage from the limiting channel or hole on the limiting member.

[0031] Example 3

[0032] An example of the application of the optical adjustment device and method of Embodiment 1 in an electrophoresis apparatus, which differs from Embodiment 2 in that: The second limiter uses the same component as the third limiter. The second steel ball is located in the hole (i.e., the limiter channel) at the end of the second limiter. It translates or rolls along its central axis (without axial direction) within the hole, while rolling on the vertical part and having displacement.

Claims

1. An optical adjustment device, comprising a first carrier and an optical module, wherein the optical module is disposed on the first carrier; characterized in that, The optical adjustment device further includes: The second carrier and multiple tension springs are arranged non-collinearly and are respectively connected to the first carrier and the second carrier. The first adjustment unit includes a fixed block, a first rolling element, a first limiting element, a first spring, and a first linear drive module. The lower part of the spherical first rolling element is disposed in the limiting groove of the fixed block, and the upper part is disposed in the first linear groove of the first limiting element. The fixed block is fixed to the second bearing member, and the first limiting element is fixed to the first bearing member. The first linear drive module is fixed to the first bearing member, and a first telescopic rod abuts against the first rolling element. The first spring connects the first linear drive module and the fixed block. The first adjustment unit utilizes the spherical first rolling element to roll in the first linear groove, causing the first bearing member to translate relative to the second bearing member. The second adjustment unit includes a stop block, a second limiting member, a second rolling member, a second spring, and a second linear drive module. The spherical second rolling member is located within the limiting channel of the second limiting member and contacts the stop block, which is fixed to the second bearing member. The second linear drive module is fixed to the first bearing member, and the second telescopic rod pushes against the second rolling member. The second spring connects the second linear drive module and the stop block. The angle between the second telescopic rod and the first telescopic rod is an acute angle or a right angle.

2. The optical adjustment device according to claim 1, characterized in that, The limiting channel is located within the hole of the second limiting member, or the second limiting member has a second straight groove for accommodating the second rolling member, and the limiting channel is located between the second straight groove and the second bearing member, or between the second straight groove and the stop block.

3. The optical adjustment device according to claim 1, characterized in that, The optical adjustment device further includes a third adjustment unit, the third adjustment unit comprising: The third limiting member and the third rolling member, the spherical third rolling member is located in the through hole of the third limiting member and contacts the second bearing member, the third limiting member is fixed on the first bearing member; The third linear drive module is fixed on the first support member, and the third telescopic rod pushes against the third rolling member.

4. The optical adjustment device according to claim 1 or 2, characterized in that, The straight groove is a V-shaped groove, and its extension direction is parallel to the telescopic rod.

5. The optical adjustment device according to claim 1 or 2, characterized in that, The first linear drive module, the first limiting member, the second limiting member, and the second linear drive module are respectively fixed on the lower side of the first carrier, and the fixing block and the stop block are fixed on the upper side of the second carrier.

6. The optical adjustment device according to claim 3, characterized in that, The third linear drive module is fixed to the upper side of the first carrier, and the third telescopic rod passes through the first carrier.

7. The optical adjustment device according to claim 3, characterized in that, The gasket is fixed to the upper side of the second bearing member, and the third rolling member contacts the gasket.

8. The optical adjustment device according to claim 2, characterized in that, The ends of the first telescopic rod and the second telescopic rod are respectively fixed with extrusion members, and the end face area of ​​the extrusion member that contacts the rolling member is larger than the cross-sectional area of ​​the telescopic rod.

9. An optical adjustment method for an optical adjustment device according to any one of claims 1-8, wherein the adjustment method includes the operation of the first adjustment unit and / or the second adjustment unit, and the first adjustment unit operates in the following manner: When the first telescopic rod becomes longer or shorter, the length of the first spring is adjusted accordingly. The first rolling element rolls in the first straight groove, causing the first bearing element to shift relative to the second bearing element, thereby adjusting the position of the optical module. The second adjustment unit operates as follows: The length of the second telescopic rod changes as the second spring shortens, causing the first bearing member to rotate forward or backward around the first rolling member. The first rolling member rolls in the first straight groove, and the second rolling member rolls on the stop block, thereby adjusting the position of the optical module in two dimensions.

10. The optical adjustment method according to claim 9, characterized in that, The adjustment method further includes the operation of a third adjustment unit, the third adjustment unit operating as follows: The lengthening or shortening of the third telescopic rod causes the angle between the first and second support members to change, thereby adjusting the position of the optical module.

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