CN219285480U

CN219285480U - Laser light path adjusting device for gene sequencer

Info

Publication number: CN219285480U
Application number: CN202320230237.3U
Authority: CN
Inventors: 周洋; 廖海云
Original assignee: Shenzhen Sailu Medical Technology Co ltd
Current assignee: Shenzhen Sailu Medical Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-06-30
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a laser light path adjusting device for a gene sequencer, which comprises a base, a sliding seat, a first lens, a second lens, a connecting seat, an optical fiber head, an optical filter, a reflecting mirror and a third lens, wherein the sliding seat is arranged on the base in a sliding manner; the optical fiber head, the first lens and the second lens are sequentially arranged at intervals along the sliding path of the sliding seat; the base is provided with a sliding channel, the sliding seat is arranged in the sliding channel in a sliding mode and forms a laser channel with the base, and the optical fiber head, the first lens, the second lens, the optical filter, the reflecting mirror and the third lens are sequentially arranged along the laser channel. The laser light path adjusting device for the gene sequencer can adjust the distance between lenses and prevent the lenses from loosening and falling.

Description

Laser light path adjusting device for gene sequencer

Technical Field

The utility model belongs to the field of optical imaging technology, and particularly relates to a laser light path adjusting device for a gene sequencer.

Background

In the gene sequencer in the market, the optomechanical part is responsible for converting fluorescent signals on the chip into electric signals for subsequent letter analysis. The biochemical signal on the chip requires laser irradiation to excite to produce fluorescence. However, in the process of irradiating the chip with laser light, it is necessary to expand, shape, refocus, etc. the laser light, and thus it is necessary to adjust the distance between the respective lenses. In the existing optical machine part, lenses which do not need to be moved are installed on a fixed main body, lenses which need to be moved and adjusted are installed on a pressing ring, and the pressing ring is in threaded connection with the fixed main body, so that when the distance between different lenses needs to be adjusted, adjustment is realized by rotating a fixed part, and due to the fact that the number of teeth of the pressing ring is small, sliding teeth fall off or loosen easily, and the pressing ring is easy to loosen when in vibration.

Disclosure of Invention

The utility model aims to provide a laser light path adjusting device for a gene sequencer, which can realize the adjustment of the distance between lenses and prevent the lenses from loosening and falling off.

The utility model provides a laser light path regulating device for a gene sequencer, which comprises a base, a sliding seat, a first lens, a second lens, a connecting seat, an optical fiber head, an optical filter, a reflecting mirror and a third lens, wherein the sliding seat is arranged on the base in a sliding mode; the optical fiber head, the first lens and the second lens are sequentially arranged at intervals along the sliding path of the sliding seat;

the base is provided with a sliding channel, the sliding seat is arranged in the sliding channel in a sliding mode and forms a laser channel with the base, and the optical fiber head, the first lens, the second lens, the optical filter, the reflecting mirror and the third lens are sequentially arranged along the laser channel.

In some embodiments, the base is provided with a bar hole, the bar hole extends along the sliding direction of the sliding seat, the sliding seat is provided with a sliding shaft, the sliding shaft passes through the bar hole and extends out of the base, and the base is provided with a locking piece matched with the sliding shaft.

In some embodiments, the locking member comprises a first ferrule and a second ferrule; the first clamping sleeve and the second clamping sleeve are sleeved on the base at intervals along the extending direction of the strip-shaped hole, and the sliding shaft is clamped between the first clamping sleeve and the second clamping sleeve.

In some embodiments, the laser light path adjusting device for a gene sequencer further comprises an adjusting threaded rod; the sliding seat is provided with an adjusting threaded hole, the adjusting threaded rod is in threaded connection with the adjusting threaded hole, the extending direction of the adjusting threaded hole is perpendicular to the sliding direction of the sliding seat, and the first lens is located on the extending path of the adjusting threaded hole;

the adjusting threaded holes and the adjusting threaded rods are respectively provided with a plurality of one-to-one correspondence, and the adjusting threaded holes are distributed along the circumferential direction of the first lens at intervals.

In some embodiments, the sliding seat is provided with a first beam channel, and the base is provided with a second beam channel and a third beam channel; the first beam channel, the second beam channel and the third beam channel are sequentially communicated, the extending direction of the first beam channel and the extending direction of the second beam channel are the same as the sliding direction of the sliding seat, and the extending direction of the second beam channel and the extending direction of the third beam channel are mutually perpendicular;

the first lens and the second lens are installed in the first beam channel, the optical filter is installed in the second beam channel, the third lens is installed in the third beam channel, and the reflecting mirror is installed at the communication position of the second beam channel and the third beam channel.

In some embodiments, the first beam channel includes a first mounting hole, a second mounting hole, a third mounting hole;

the first mounting hole, the second mounting hole, the third mounting hole communicates in proper order, be equipped with the first mirror seat that has first through-hole on the first mounting hole, first through-hole with the second mounting hole intercommunication, first lens is installed on the first mirror seat and is covered first through-hole, be equipped with the second mirror seat that has the second through-hole in the third mounting hole, the second lens is installed in the second mounting hole and the centre gripping be in the second mirror seat with between the inner wall of second mounting hole, the second lens covers the second through-hole.

In some embodiments, the laser light path adjustment device for a gene sequencer further comprises a cover having a connection hole; the sealing cover is connected with the sliding seat;

the first beam channel further includes a fourth mounting hole in communication with the first mounting hole; one end of the connecting seat is rotatably arranged in the fourth mounting hole and clamped between the sealing cover and the inner wall of the fourth mounting hole, the other end of the connecting seat penetrates through the connecting hole to be connected with the optical fiber head, and the direction of the rotating axis of the connecting seat is the same as the sliding direction of the sliding seat.

In some embodiments, one end of the third beam channel is communicated with the second beam channel, a third lens seat with a third through hole is arranged at the other end of the third beam channel, the third lens is mounted on the third lens seat and covers the third through hole, a fourth lens seat with a fourth through hole is arranged at the communication position of the second beam channel and the third beam channel, and the reflecting mirror is mounted on the fourth lens seat and covers the fourth through hole.

In some embodiments, the angle between the extending direction of the second beam channel and the mirror, and the angle between the extending direction of the third beam channel and the mirror are all 45 °.

In some embodiments, the base is provided with a fourth beam channel, the second beam channel is communicated with the sliding channel through the fourth beam channel, the inner wall of the second beam channel is provided with an annular groove, and the optical filter is installed in the annular groove and clamped between the base and the inner wall of the annular groove.

The technical scheme provided by the utility model has the following advantages and effects:

according to the laser light path adjusting device for the gene sequencer, the first lens and the second lens are driven to move through the sliding seat, so that the distance between the first lens and the third lens and the distance between the second lens and the third lens can be adjusted, the first lens and the second lens are both arranged on the sliding seat, the sliding seat is arranged in the sliding channel of the base in a sliding mode, and the first lens and the second lens are prevented from loosening and falling in the position adjusting process.

Drawings

FIG. 1 is a schematic diagram of a laser light path adjusting device for a gene sequencer;

FIG. 2 is a cross-sectional view of a front view of a laser light path adjustment device for a gene sequencer;

FIG. 3 is an exploded view of a laser light path adjustment device for a gene sequencer;

fig. 4 is a sectional view of the slide mount.

Reference numerals illustrate:

10. a base; 11. a sliding seat; 12. a first lens; 13. a second lens; 14. a connecting seat; 15. an optical fiber head; 16. a light filter; 17. a reflecting mirror; 18. a third lens; 19. a sliding shaft; 20. a locking member; 21. a first lens base; 22. a second lens base; 23. a cover; 24. a third lens base; 25. a fourth lens base;

101. a sliding channel; 102. a bar-shaped hole; 103. a second beam path; 104. a third beam path; 105. a first mounting body; 106. a second mounting body; 107. a fourth beam path; 108. an annular groove;

111. adjusting the threaded hole; 112. a first beam path; 1121. a first mounting hole; 1122. a second mounting hole; 1123. a third mounting hole; 1124. a fourth mounting hole;

201. a first ferrule; 202. a second ferrule;

211. a first through hole; 221. a second through hole; 231. a connection hole; 241. and a third through hole.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "abutted," "clamped," etc. are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, unless specifically stated or otherwise defined, it is to be understood that the terms "first," "second," etc. are used in the description of the present utility model to describe various information, but these information should not be limited to these terms, which are used only to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.

For convenience of description, unless otherwise specified, the up-down direction hereinafter referred to coincides with the up-down direction of fig. 1 itself, the left-right direction hereinafter referred to coincides with the left-right direction of fig. 1 itself, and the front-back direction hereinafter referred to coincides with the projection direction of fig. 1 itself.

As shown in fig. 1 to 4, a laser light path adjusting device for a gene sequencer includes a base 10, a slide holder 11 slidably provided on the base 10, a first lens 12 mounted on the slide holder 11, a second lens 13 mounted on the slide holder 11, a connection holder 14 mounted on the slide holder 11, an optical fiber head 15 mounted on the connection holder 14, an optical filter 16 mounted on the base 10, a reflecting mirror 17 mounted on the base 10, and a third lens 18 mounted on the base 10. The optical fiber head 15 is used for emitting light beams, and the connecting seat 14 is used for connecting the optical fiber head 15. The sliding seat 11 slides left and right on the base 10, so that the optical fiber head 15, the first lens 12 and the second lens 13 can be driven to slide left and right. The optical fiber head 15, the first lens 12, and the second lens 13 are sequentially arranged at intervals along the sliding path of the sliding seat 11. The filter 16, the mirror 17, and the third lens 18 are all mounted on the base 10 with the position unchanged. When the first lens 12 and the second lens 13 slide left and right along with the sliding seat 11, the distance between the first lens 12 and the third lens 18 and the distance between the second lens 13 and the third lens 18 are adjusted, and focusing of light beams is completed.

The base 10 has a sliding channel 101, and the sliding seat 11 is slidably disposed in the sliding channel 101 and forms a laser channel with the base 10, where the laser channel is a propagation path of a light beam emitted by the optical fiber head 15. The optical fiber head 15, the first lens 12, the second lens 13, the optical filter 16, the reflecting mirror 17, and the third lens 18 are sequentially arranged along the laser path. The sliding seat 11 is installed in the sliding channel 101, and the sliding channel 101 of the base 10 ensures that the sliding seat 11 can not generate displacement in other directions while the sliding seat 11 slides left and right, so that the coaxiality of the first lens 12, the second lens 13 and the optical filter 16 is ensured. The laser beam emitted by the optical fiber head 15 sequentially passes through the first lens 12, the second lens 13 and the optical filter 16, and then is reflected to the third lens 18 through the reflecting mirror 17 to finally be emitted.

In one embodiment, the base 10 is provided with a bar-shaped hole 102, the bar-shaped hole 102 extends along the sliding direction of the sliding seat 11, and the bar-shaped hole 102 extends from left to right. The sliding seat 11 is provided with a sliding shaft 19, the sliding shaft 19 passes through the strip-shaped hole 102 to extend out of the base 10, and the base 10 is provided with a locking piece 20 matched with the sliding shaft 19. The sliding channel 101 is a circular groove, and the sliding seat 11 is cylindrical, so that the coaxiality of assembly is ensured. The slide shaft 19 slides along the bar-shaped hole 102, thereby guiding the slide block 11 to slide left and right, and preventing the slide block 11 from rotating. After the sliding seat 11 slides to the adjusted position, the sliding shaft 19 is locked by the locking piece 20, so that the sliding shaft 19 is prevented from sliding along the strip-shaped hole 102, and the positioning of the sliding seat 11 is realized.

The plurality of strip-shaped holes 102 and the sliding shafts 19 are in one-to-one correspondence, and the strip-shaped holes 102 are distributed at intervals along the circumference of the sliding seat 11. The place where the base 10 is provided with the strip-shaped hole 102 can be slightly deformed, so that the assemblability of the base 10 and the sliding seat 11 is ensured.

In one embodiment, the locking member 20 comprises a first ferrule 201 and a second ferrule 202; the first clamping sleeve 201 and the second clamping sleeve 202 are sleeved on the base 10 at intervals along the extending direction of the strip-shaped hole 102, and the first clamping sleeve 201 and the second clamping sleeve 202 can be clamped on the outer surface of the base 10. The sliding shaft 19 is clamped between the first ferrule 201 and the second ferrule 202. The sliding shaft 19 is driven to slide by moving the first clamping sleeve 201 and the second clamping sleeve 202 left and right, so that the position of the sliding seat 11 is adjusted, and when the first clamping sleeve 201 and the second clamping sleeve 202 stop moving, the first clamping sleeve 201 and the second clamping sleeve 202 clamp the sliding shaft 19 to lock the sliding shaft 19 at the adjusted position.

In addition, the locking member may be a fastener such as a nut, and the positioning of the slide seat 11 may be achieved by providing a nut in threaded engagement with the slide shaft 19.

In one embodiment, the laser light path adjusting device for the gene sequencer further comprises an adjusting threaded rod; the adjusting threaded rod is not shown in the drawing. The sliding seat 11 is provided with an adjusting threaded hole 111. The adjusting threaded rod is in threaded connection with the adjusting threaded hole 111, and the adjusting threaded rod is installed in the adjusting threaded hole 111. The extending direction of the adjusting screw hole 111 is perpendicular to the sliding direction of the sliding seat 11, and the adjusting screw hole 111 extends along the radial direction of the sliding seat 11. The first lens 12 is located in the extension path of the adjustment screw hole 111. In order to place the first lens 12 to move along the radial direction of the sliding seat 11 so as to influence the coaxiality of the first lens 12 and the second lens 13, the first lens 12 is pushed to move along the radial direction of the sliding seat 11 by rotating the adjusting threaded rod, so that the position of the first lens 12 is adjusted, and the coaxiality of the first lens 12 and the second lens 13 is ensured.

The adjusting threaded holes 111 and the adjusting threaded rods are respectively provided with a plurality of one-to-one correspondence, the adjusting threaded holes 111 are distributed along the circumferential direction of the first lens 12 at intervals, and can be used for adjusting the position of the first lens 12 from different directions, so that the first lens 12 can be moved and adjusted to be coaxial with the second lens 13 in all directions.

In one embodiment, the sliding seat 11 is provided with a first beam passage 112, and the first beam passage 112 penetrates the sliding seat 11 from left to right. The base 10 is provided with a second beam channel 103 and a third beam channel 104; the right end of the second beam channel 103 is communicated with the first beam channel 112, the second beam channel 103 extends leftwards and is communicated with the upper end of the third beam channel 104, the third beam channel 104 extends downwards from top to bottom, and the first beam channel 112, the second beam channel 103 and the third beam channel 104 are sequentially communicated to form the laser channel. The extending direction of the first beam path 112 and the extending direction of the second beam path 103 are the same as the sliding direction of the sliding seat 11, and the extending direction of the second beam path 103 and the extending direction of the third beam path 104 are perpendicular to each other.

The first lens 12 and the second lens 13 are mounted in the first beam path 112. The optical filter 16 is installed in the second beam path 103, and the first lens 12, the second lens 13, and the optical filter 16 are sequentially arranged at intervals from right to left. The third lens 18 is installed in the third light beam channel 104, the reflecting mirror 17 is installed at a communication position between the second light beam channel 103 and the third light beam channel 104, the reflecting mirror 17 is obliquely arranged, an included angle between the extending direction of the second light beam channel and a plane where the reflecting mirror is located is 45 degrees, and an included angle between the extending direction of the third light beam channel and the plane where the reflecting mirror is located is 45 degrees. The laser light in the second beam path 103 is reflected by the mirror 17 onto the third lens 18 in the third beam path 104.

In one embodiment, the first beam passage 112 includes a first mounting hole 1121, a second mounting hole 1122, and a third mounting hole 1123; the first mounting hole 1121 is a square hole, and the first mounting hole 1121 communicates with the adjustment screw hole 111. The second and third mounting

holes

1122, 1123 are circular holes. The first, second and third mounting

holes

1121, 1122, 1123 are arranged in this order from right to left. Central axes of the first, second, and third mounting

holes

1121, 1122, 1123 overlap.

The first mounting hole 1121, the second mounting hole 1122, and the third mounting hole 1123 are sequentially connected. The first mounting hole 1121 is provided with a first lens seat 21 having a first through hole 211, the first lens seat 21 is a square block adapted to the first mounting hole 1121, and the first lens seat 21 is engaged with the first mounting hole 1121. The first through hole 211 is communicated with the second mounting hole 1122, the first lens 12 is mounted on the first lens seat 21, and the first lens 12 is located in the first through hole 211 and covers the first through hole 211, so as to implement the mounting of the first lens 12. When the coaxiality of the first lens 12 and the second lens 13 is ensured by adjusting the position of the first lens 12, the first lens seat 21 is extruded by the adjusting threaded rod to drive the first lens 12 to move, so that the first lens 12 is prevented from being damaged by being directly extruded by the adjusting threaded rod. The third mounting hole 1123 is provided therein with a second lens seat 22 having a second through hole 221, and the second lens seat 22 is annular and is engaged with the third mounting hole 1123. The diameter of the second mounting hole 1122 is smaller than that of the third mounting hole 1123, the second lens 13 is mounted in the second mounting hole 1122 and clamped between the second lens holder 22 and the inner wall of the second mounting hole 1122, and the second lens 13 covers the second through hole 221 to mount the second lens 13.

In one embodiment, the laser light path adjustment device for a gene sequencer further includes a cover 23 having a connection hole 231; the cover 23 is provided at the right end of the slide holder 11 and covers the passage opening of the slide passage 101, preventing entry of moisture of dust and air. The cover 23 is connected to the slide base 11 by a fastener such as a screw.

The first beam path 112 further includes a fourth mounting hole 1124 communicating with the first mounting hole 1121; the fourth mounting hole 1124 is located at the right end of the first mounting hole 1121, and the diameter of the fourth mounting hole 1124 is greater than the maximum width of the first mounting hole 1121. The connecting seat 14 is T-shaped, one end of the connecting seat 14 is rotatably mounted in the fourth mounting hole 1124 and clamped between the cover 23 and the inner wall of the fourth mounting hole 1124, the other end of the connecting seat 14 passes through the connecting hole 231 and is connected with the optical fiber head 15, and the rotation axis direction of the connecting seat 14 is the same as the sliding direction of the sliding seat 11. The connection base 14 can be adjusted by rotating 360 degrees along the rotation axis, so as to be connected with the optical fiber head 15. The sealing cover 23, the optical fiber head 15, the first lens 12, the first lens seat 21, the second lens 13, the second lens seat 22 and the connecting seat 14 can be detachably arranged on the sliding seat 11, so that the installation, the debugging and the maintenance are convenient.

In one embodiment, the upper end of the third beam channel 104 is in communication with the left end of the second beam channel 103, and the lower end of the third beam channel 104 is provided with a third lens holder 24 having a third through hole 241, and the third lens holder 24 is mounted at the lower end of the third beam channel 104 by a screw. The third lens 18 is mounted on the third lens holder 24 and covers the third through hole 241, and the laser beam is emitted from the third lens 18 to the outside of the base 10. The communication part of the second beam channel 103 and the third beam channel 104 is provided with a fourth lens seat 25 with a fourth through hole, the communication part of the second beam channel 103 and the third beam channel 104 is provided with a mounting hole, the fourth lens seat 25 is obliquely arranged and covers the mounting hole, and the reflecting mirror 17 is arranged on the fourth lens seat 25 and covers the fourth through hole. The reflecting surfaces of the reflecting mirror 17 are located in the second beam path 103 and the third beam path 104. The first lens holder 21, the second lens holder 22, the third lens holder 24, and the fourth lens holder 25 can prevent the first lens 12, the second lens 13, the third lens 18, and the reflecting mirror 17 from shaking, respectively.

In one embodiment, the base 10 includes a first mounting body 105 and a second mounting body 106 coupled to the first mounting body 105; the first mounting body 105 and the second mounting body 106 are connected by a fastener such as a bolt. The second beam path 103 and the third beam path 104 are both arranged on the first mounting body 105, the sliding path 101 is arranged on the second mounting body 106, and the optical filter 16 is arranged in the second beam path 103 and is close to the second mounting body 106.

In one embodiment, the second mounting body 106 is provided with a fourth beam path 107, and the fourth beam path 107 is located between the second beam path 103 and the sliding path 101. The fourth beam path 107 has a smaller cross section than the slide path 101, allowing the light beam to pass through and preventing the slide seat 11 from entering. The second beam path 103 communicates with the slide path 101 through the fourth beam path 107. An annular groove 108 is provided in the inner wall of the right end of the second beam path 103, and the optical filter 16 is mounted in the annular groove 108 and sandwiched between the second mounting body 106 and the inner wall of the annular groove 108. The second mounting body 106 is provided with a limiting ring, and the limiting ring is clamped into the annular groove 108 and is abutted against the optical filter 16, so that the optical filter 16 is positioned, and the optical filter 16 is prevented from shaking.

The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.

Claims

1. The laser light path adjusting device for the gene sequencer is characterized by comprising a base, a sliding seat, a first lens, a second lens, a connecting seat, an optical fiber head, an optical filter, a reflecting mirror and a third lens, wherein the sliding seat is arranged on the base in a sliding mode; the optical fiber head, the first lens and the second lens are sequentially arranged at intervals along the sliding path of the sliding seat;

2. The laser light path adjusting device for a gene sequencer according to claim 1, wherein the base is provided with a bar-shaped hole, the bar-shaped hole extends along the sliding direction of the sliding seat, the sliding seat is provided with a sliding shaft, the sliding shaft passes through the bar-shaped hole and extends out of the base, and the base is provided with a locking piece matched with the sliding shaft.

3. The laser light path adjustment device for a gene sequencer according to claim 2, wherein the locking member includes a first ferrule and a second ferrule; the first clamping sleeve and the second clamping sleeve are sleeved on the base at intervals along the extending direction of the strip-shaped hole, and the sliding shaft is clamped between the first clamping sleeve and the second clamping sleeve.

4. The laser light path adjustment device for a gene sequencer according to claim 1, further comprising an adjustment threaded rod; the sliding seat is provided with an adjusting threaded hole, the adjusting threaded rod is in threaded connection with the adjusting threaded hole, the extending direction of the adjusting threaded hole is perpendicular to the sliding direction of the sliding seat, and the first lens is located on the extending path of the adjusting threaded hole;

5. The laser path adjusting device for a gene sequencer according to any one of claims 1 to 4, wherein a first beam channel is provided on the slide base, and a second beam channel and a third beam channel are provided on the base; the first beam channel, the second beam channel and the third beam channel are sequentially communicated, the extending direction of the first beam channel and the extending direction of the second beam channel are the same as the sliding direction of the sliding seat, and the extending direction of the second beam channel and the extending direction of the third beam channel are mutually perpendicular;

6. The laser light path adjustment device for a gene sequencer according to claim 5, wherein the first beam path includes a first mounting hole, a second mounting hole, and a third mounting hole;

7. The laser light path adjustment device for a gene sequencer according to claim 6, further comprising a cover having a connection hole; the sealing cover is connected with the sliding seat;

8. The laser light path adjustment device for a gene sequencer according to claim 6, wherein one end of the third beam path is communicated with the second beam path, the other end of the third beam path is provided with a third lens seat having a third through hole, the third lens is mounted on the third lens seat and covers the third through hole, a fourth lens seat having a fourth through hole is provided at a communication position of the second beam path and the third beam path, and the reflecting mirror is mounted on the fourth lens seat and covers the fourth through hole.

9. The laser light path adjusting device for a gene sequencer according to claim 5, wherein an angle between an extending direction of the second beam path and the reflecting mirror, and an angle between an extending direction of the third beam path and the reflecting mirror are 45 °.

10. The laser light path adjusting device for a gene sequencer according to claim 9, wherein the base is provided with a fourth light beam channel, the second light beam channel is communicated with the sliding channel through the fourth light beam channel, an annular groove is formed in the inner wall of the second light beam channel, and the optical filter is installed in the annular groove and clamped between the base and the inner wall of the annular groove.