Built-in optical filter loading and unloading device

Abstract

The utility model relates to a built-in optical filter loading and unloading device, which comprises an optical machine main seat, a main seat groove with a T-shaped structure is arranged on the optical machine main seat at a position corresponding to an imaging optical path, and the main seat groove comprises a head groove and a tail groove which form the T-shaped structure, the head groove is perpendicular to the direction of the imaging optical path, and the tail groove is parallel to the direction of the imaging optical path. A main seat through hole is formed in the groove bottom of the head groove; a bracket is detachably mounted in the main seat groove, the bracket comprises a tray and a baffle plate, the tray penetrates through the main seat through hole and extends into the imaging light path, the baffle plate extends at the tail end of the tray, is matched and clamped with the main seat groove and is detachably connected to the bottom of the main seat groove, and the tray is provided with a tray through hole for mounting an emission optical filter. According to the utility model, no professional equipment is needed when the emission filter is disassembled, the process is stable and reliable, the positioning precision is high, the operation is simple and convenient, and the operation demand is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of biochip testing equipment, and in particular to a built-in filter loading and unloading device. Background Technology

[0002] When assembling and calibrating the imaging unit of an optical machine used for biochip reagent kit testing, it is necessary to repeatedly disassemble and reassemble the emission filter for image center calibration. However, the emission filters in the imaging optical path of existing optical machines used for biochip reagent kit testing are either external emission filters or internal screw-in emission filters, each of which has the following problems:

[0003] External emission filter method: The filter is easily contaminated with environmental dust, which affects the light transmission and filtering imaging effect. Moreover, because the filter holder is far away from the main unit, the positioning of the filter and the optical path will be affected, resulting in inaccuracy.

[0004] The internal screw-in method for the emission filter: In order to make it internal, the screw-in hole is larger than the filter, which results in the filter's center position being different after each disassembly and reassembly. In addition, in order to prevent the filter from falling out, it needs to be pressed to fix it. The force applied to the filter affects its front and back position. Furthermore, due to space constraints, it is difficult to remove the filter. Moreover, the external lens assembly also needs to be disassembled and reassembled each time, and its position will change after each reassembly, all of which will ultimately affect the imaging results.

[0005] Both current methods require a lot of time and effort in the assembly, calibration, and debugging stages. Once assembled, they cannot be disassembled and restored. Disassembly and assembly also require professional calibration equipment, which is not conducive to use. Utility Model Content

[0006] To address the shortcomings of existing methods, this utility model provides a built-in filter loading and unloading device.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a built-in filter loading and unloading device, including an optical engine main body, on which a T-shaped main body groove is provided at a position corresponding to the imaging optical path, the main body groove including a head groove perpendicular to the direction of the imaging optical path and a tail groove parallel to the direction of the imaging optical path forming the T-shape; a main body through hole is provided at the bottom of the head groove; a bracket is detachably installed in the main body groove, the bracket including a tray extending into the imaging optical path through the main body through hole and a baffle extending at the tail end of the tray that matches and engages with the main body groove and is detachably connected to the bottom of the main body groove, the tray being provided with a tray through hole for installing an emission filter.

[0008] Preferably, the through hole of the tray has annular protrusions extending from its wall.

[0009] Preferably, the tray through hole has multiple hole wall grooves spaced at intervals along the circumference of the tray through hole.

[0010] Preferably, the head groove has two threaded holes on both sides of its bottom, and the baffle has mounting holes at positions corresponding to the two threaded holes. The baffle can be detachably installed in the main seat groove by bolts threaded through the mounting holes and connected to the threaded holes. A first positioning post is provided in the middle of the bottom of the head groove, and a second positioning post is provided on the bottom of the tail groove. The baffle has an oblong through hole at a position corresponding to the first positioning post, and a positioning hole at a position corresponding to the second positioning post that can be matched and engaged with the second positioning post. The main seat through hole is located between the first positioning post and the second positioning post.

[0011] Preferably, the main seat groove is a T-shaped notch provided on the edge of the optical engine main seat, and the baffle has an extension arm extending out of the edge of the optical engine main seat.

[0012] Preferably, the main seat through hole is an elongated through hole with its long side parallel to the head groove.

[0013] Preferably, the imaging optical route is formed by lens assemblies and dichroic mirror assemblies arranged on opposite sides of the optical engine main body.

[0014] Preferably, the tray through hole is a circular through hole.

[0015] Preferably, the edge of the opening end of the main seat groove is beveled.

[0016] Preferably, an emission filter is installed inside the through hole of the tray.

[0017] The beneficial effects of this utility model are as follows: During the assembly and calibration of the optical engine, the emission filter can be directly inserted or removed from the main optical engine using a bracket, thus hiding the emission filter inside the optical engine. The size of the baffle and the groove of the main engine are matched to prevent the bracket from shifting. After each bracket is installed, the position of the emission filter is always in the same position. The entire process does not require professional equipment, is stable and reliable, has high positioning accuracy, and is simple and convenient to operate. Moreover, the device occupies a small volume, making it more convenient for operational needs. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure along the imaging optical path of an embodiment of this utility model;

[0020] Figure 3This is a schematic diagram of the structure of the optical engine main seat without the bracket according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the bracket according to an embodiment of the present utility model;

[0022] Component names and serial numbers in the diagram: 1-Optical engine main body 2-Main body groove 20-Head groove 21-Tail groove 200-Threaded hole 3-Main body through hole 4-Bracket 40-Tray 41-Baffle 400-Tray through hole 401-Hole wall protrusion 402-Hole wall groove 410-Mounting hole 411-Oval through hole 412-Positioning hole 413-Extension arm 5-Bolt 6-First positioning post 60-Second positioning post 7-Lens assembly 8-Dichroic mirror assembly 9-Emitting filter. Detailed Implementation

[0023] The present invention will be further described below with reference to embodiments, providing a clear and complete description. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments may be further adjusted according to the specific conditions of the manufacturer. Implementation conditions not specified are generally those used in conventional experiments. Furthermore, directional terms mentioned in the present invention, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying illustrations. The use of directional terms is for better and clearer explanation and understanding of the present invention, and is not intended to indicate or imply any necessary orientation of the present invention. Therefore, they should not be construed as limitations on the present invention.

[0024] Examples of embodiments of this utility model Figures 1 to 4As shown, a built-in filter loading and unloading device includes an optical engine main unit 1. The optical engine main unit 1 is the housing of any existing optical engine used for examining biochip reagent kits. A T-shaped main unit groove 2 is provided on the main unit 1 at a position corresponding to the imaging optical path. The imaging optical path is formed by lens assemblies 7 and dichroic mirror assemblies 8 arranged on opposite sides of the main unit 1. For example, lens assembly 7 is installed on the left side of the main unit 1, and dichroic mirror assembly 8 is installed on the right side. Lens assembly 7 and dichroic mirror assembly 8 are conventional structures used in existing optical engines and will not be described in detail here. Thus, the imaging optical path formed in the optical engine is in the left-right direction. The main unit groove 2 is located on the front side wall of the main unit 1, corresponding to the imaging optical path. At a high position, the main seat groove 2 includes a head groove 20 perpendicular to the imaging optical path direction and a tail groove 21 parallel to the imaging optical path direction, forming a T-shaped structure. The head groove 20 is positioned vertically, while the tail groove 21 is positioned horizontally, and the head groove 20 and tail groove 21 are connected. The tail groove 21 faces the side where the dichroic mirror assembly 8 is located. A main seat through-hole 3 is provided at the bottom of the head groove 20, allowing the tray 40 to be inserted into the imaging optical path. The main seat through-hole 3 is configured as an elongated through-hole with its long side parallel to the head groove 20; that is, the main seat through-hole 3 is an elongated through-hole extending vertically. A bracket 4 is detachably installed inside the main seat groove 2, and the bracket 4 is detachably installed on the main seat using screws. In the groove 2, the structure of the main seat groove 2 avoids the problem of the bracket 4 being installed backwards, thus avoiding the problem of the emission filter 9 being installed backwards. At the same time, the edge of the opening end of the main seat groove 2 is beveled, which facilitates the insertion of the baffle 41 into the main seat groove 2. The bracket 4 includes a tray 40 that extends through the main seat through hole 3 into the imaging optical path and a baffle 41 that extends from the tail end of the tray 40, matches and engages with the main seat groove 2, and is detachably connected to the bottom of the main seat groove 2. The tray 40 is provided with a tray through hole 400 for installing the emission filter 9. The tray through hole 400 is a circular through hole with the axis of the same direction as the imaging optical path, which facilitates the installation of the emission filter 9 and does not affect the position of the emission filter 9 in the imaging optical path. For the filtering function, the emission filter 9 is first installed in the through hole 400 of the tray. Then, the tray 40 is inserted into the main optical engine base 1 through the through hole 3, so that the emission filter 9 is in the imaging optical path. The baffle 41 is matched and engaged in the groove 2 of the main base. The size of the baffle 41 is similar to that of the groove 2 of the main base, which avoids the bracket 4 from deflecting after insertion and contacting other optical components. This ensures the accurate position of the bracket 4 after assembly. When the bracket 4 is disassembled and reassembled, it can also be ensured that the bracket 4 is in the same installation position and installation accuracy. It ensures the reversibility of disassembly in terms of function and accuracy, and also prevents dust and foreign objects from entering the main optical engine base 1 and contaminating the emission filter 9. Finally, the baffle 41 is fixed in the groove 2 of the main base with screws.In this structure, the lens assembly 7 and the dichroic mirror assembly 8 on the main optical engine 1 will not interfere with the disassembly and assembly of the bracket 4. When replacing the emission filter 9, it is not necessary to disassemble the lens assembly 7 and the dichroic mirror assembly 8. The whole process does not require professional equipment, the process is stable and reliable, the positioning accuracy is high, and the operation is convenient and quick.

[0025] Further improvements, such as Figure 4 As shown, annular protrusions 401 extend from the wall of the tray through-hole 400, forming a stepped structure that ensures the installation and positioning of the emission filter 9. For example, if the protrusions 401 are positioned at one end of the tray through-hole 400 near the lens assembly 7, the emission filter 9 will be installed within the tray through-hole 400 near the dichroic mirror assembly 8. Multiple grooves 402 are spaced circumferentially along the wall of the tray through-hole 400. Glue can be injected into the grooves 402, and after drying, the emission filter 9 can be fixed to the tray 40. For instance, four semi-circular grooves 402 can be provided on the wall of the tray through-hole 400, dividing the circumference of the tray through-hole 400 into four equal parts. The left end of each groove extends to the right surface of the protrusion 401, and the right end of each groove is flush with the right end of the tray through-hole 400.

[0026] Further improvements, such as Figure 3 As shown, two threaded holes 200 are provided on both sides of the bottom of the head groove 20, that is, one threaded hole 200 is provided at the upper end of the bottom of the head groove 20, and the other threaded hole 200 is provided at the lower end of the bottom of the head groove 20. Figure 4 As shown, the baffle 41 has mounting holes 410 at positions corresponding to the two threaded holes 200. The baffle 41 can be detached and installed in the main seat groove 2 by bolts 5 threaded through the mounting holes 410 and connected to the threaded holes 200. After the tray 40 is inserted into the optical engine main seat 1 and the baffle 41 is engaged in the main seat groove 2, the bracket 4 is fixed in the main seat groove 2 by bolts 5. The disassembly and assembly structure is simple and convenient, which is more conducive to use. A first positioning post 6 is provided in the middle of the bottom of the head groove 20, and a second positioning post 60 is provided on the bottom of the tail groove 21. The first positioning post 6 and the second positioning post 60 are positioned along the... The baffle 41 is spaced apart in the left and right directions; it has an oblong through hole 411 at the position corresponding to the first positioning post 6, and a positioning hole 412 at the position corresponding to the second positioning post 60, which can match and engage with the second positioning post 60. This facilitates the insertion of the two positioning posts into the positioning hole 412 and the oblong through hole 411. The main seat through hole 3 is located between the first positioning post 6 and the second positioning post 60, which further ensures the precise installation of the baffle 41 in the main seat groove 2. This ensures that the emission filter 9 is in the same position every time it is replaced, thus ensuring the accuracy during optomechanical inspection.

[0027] Further improvements, such as Figure 1 and Figure 3 As shown, the main seat groove 2 is a T-shaped notch set on the edge of the optical engine main seat 1. An extension arm 413 protruding from the edge of the optical engine main seat 1 extends from the baffle 41. When removing or installing the bracket 4 from the main seat groove 2, the bracket 4 can be easily removed or installed from the main seat groove 2 by pinching the extension arm 413.

[0028] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A built-in filter loading and unloading device, characterized in that: The system includes an optical engine main unit, on which a T-shaped main unit groove is provided at a position corresponding to the imaging optical path. The main unit groove includes a head groove perpendicular to the imaging optical path direction and a tail groove parallel to the imaging optical path direction, forming a T-shape. A main unit through hole is provided at the bottom of the head groove. A bracket is detachably installed in the main unit groove. The bracket includes a tray extending into the imaging optical path through the main unit through hole and a baffle extending from the tail end of the tray, which matches and engages with the main unit groove and is detachably connected to the bottom of the main unit groove. The tray is provided with a tray through hole for installing an emission filter.

2. The built-in filter loading and unloading device according to claim 1, characterized in that... The tray through hole has annular protrusions extending from its hole wall.

3. The built-in filter loading and unloading device according to claim 1 or 2, characterized in that... The tray through hole has multiple hole wall grooves spaced at intervals along the circumference of the tray through hole.

4. The built-in filter loading and unloading device according to claim 1, characterized in that... The head groove has two threaded holes on each side of its bottom. The baffle has mounting holes corresponding to the two threaded holes. The baffle can be detachably installed in the main seat groove using bolts threaded through the mounting holes. A first positioning post is located in the middle of the head groove bottom, and a second positioning post is located on the bottom of the tail groove. The baffle has an oblong through hole corresponding to the first positioning post and a positioning hole corresponding to the second positioning post. The main seat through hole is located between the first and second positioning posts.

5. The built-in filter loading and unloading device according to claim 1, characterized in that... The main seat groove is a T-shaped notch set on the edge of the optical engine main seat, and the baffle has an extension arm that protrudes from the edge of the optical engine main seat.

6. The built-in filter loading and unloading device according to claim 1, characterized in that: The main seat through hole is an elongated through hole with its long side parallel to the head groove.

7. The built-in filter loading and unloading device according to claim 1, characterized in that... The imaging optical route is formed by lens assemblies and dichroic mirror assemblies arranged on opposite sides of the optical engine main body.

8. The built-in filter loading and unloading device according to claim 1, characterized in that... The tray through hole is a circular through hole.

9. The built-in filter loading and unloading device according to claim 1, characterized in that... The edge of the opening end of the main seat groove is beveled.

10. The built-in filter loading and unloading device according to claim 1, characterized in that... An emission filter is installed inside the through hole of the tray.

Images