CN215895109U - Portable digital microscope - Google Patents

Abstract

The utility model belongs to the technical field of microscopes, and discloses a portable digital microscope. The device comprises a shell, a first adjusting component, a photosensitive chip, a second adjusting component, an objective lens and a display screen. First adjusting part and second adjusting part all set up on the casing, and the sensitization chip sets up on first adjusting part, and objective setting is on the second adjusting part, and sensitization chip and objective set up relatively, adjust first adjusting part and/or second adjusting part homoenergetic and change the relative position between sensitization chip and the objective. The first adjusting assembly comprises a first lifting piece, a first rotating barrel and a first barrel body. First rotatory section of thick bamboo rotates and sets up in first barrel, and first lifter activity sets up on first rotatory section of thick bamboo, rotates first rotatory section of thick bamboo and can make first lifter move along first direction. The utility model provides a portable digital microscope which has the advantages of large zooming range, stable structure and good light-gathering performance.

Description

Portable digital microscope

Technical Field

The utility model relates to the technical field of microscopes, in particular to a portable digital microscope.

Background

In recent years, portable digital microscopes have been widely used in various industries due to their high efficiency and convenience.

In order to be carried conveniently, the conventional portable digital microscope has a small volume design, so that the zoom multiple is small, and the application range of the portable digital microscope is influenced. In order to improve the zoom factor, in the prior art, the zoom range is increased by increasing the relative adjustment range between the objective lens and the eyepiece. In current structural design, the barrel comprises a plurality of plates along circumference concatenation, is separated by between each plate and sets up to form logical groove, eyepiece and objective set up the both ends at the barrel relatively, all are equipped with the direction arch on eyepiece and the objective, and the protruding embedding of direction is leading to the inslot, so that eyepiece and objective homoenergetic are followed logical groove and are slided, thereby focus. However, in order to stably connect the plates together to form the barrel, an additional connecting piece is needed to fix the barrel along the circumferential direction, and the additional connecting piece inevitably passes through a certain position of the through groove, so that the sliding range of the guide protrusion along the through groove is limited, the adjusting range of the ocular lens and the objective lens is limited, and the zooming range of the microscope is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a portable digital microscope which is large in zooming range, stable in structure and good in light gathering performance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a portable digital microscope, comprising:

a housing;

the first adjusting assembly comprises a first lifting piece, a first rotating cylinder and a first cylinder body, the first cylinder body is arranged on the shell, the first rotating cylinder is rotatably arranged in the first cylinder body, the first lifting piece is movably arranged on the first rotating cylinder, the first lifting piece can move along a first direction by rotating the first rotating cylinder, and the first direction is parallel to the axial direction of the first cylinder body;

the photosensitive chip is arranged on the first lifting piece;

the second adjusting component is arranged on the shell;

an objective lens disposed on the second adjustment assembly;

the photosensitive chip and the objective lens are arranged oppositely, and the relative position between the photosensitive chip and the objective lens can be changed by adjusting the first adjusting component and/or the second adjusting component;

and the display screen is arranged on the shell and is electrically connected with the photosensitive chip.

Optionally, a first lifting groove is formed in the first barrel body in the first direction, a first spiral limiting groove is formed in the first rotating barrel body, a first protrusion is arranged on the first lifting piece and penetrates through the first spiral limiting groove to be in sliding connection with the first lifting groove, and the first rotating barrel body is rotated to drive the first protrusion to slide along the first lifting groove so that the first lifting piece can move in the first direction.

Optionally, the number of the first spiral limiting grooves is two, the two first spiral limiting grooves are arranged oppositely, and the angle range distributed along the circumferential direction of the first rotating cylinder does not exceed 90 °.

Optionally, the second adjusting assembly includes a second lifting member, an operating member, and a second cylinder, the objective lens is disposed on the second lifting member, the second lifting member is slidably disposed on the second cylinder along the first direction, the second cylinder is disposed on the housing, and the operating member is in transmission connection with the second lifting member to drive the second lifting member to slide.

Optionally, the operating part includes knob and the gear that links to each other, is equipped with the pinion rack that extends along first direction on the second lifter, and the gear meshes with the pinion rack, rotates the knob and can drive the pinion rack and move along first direction to drive the second lifter and slide.

Optionally, a guide rib extending along the first direction is arranged on either one of the second lifting member and the second cylinder, and a guide groove matched with the guide rib is arranged on the other one of the second lifting member and the second cylinder.

Optionally, the second lifting piece includes an objective lens mounting cylinder and a guide cylinder which are connected and communicated along the first direction, the objective lens is disposed in the objective lens mounting cylinder, and the guide cylinder is disposed close to the object to be observed compared with the objective lens mounting cylinder.

Optionally, still include a spotlight section of thick bamboo and light source, the light source setting is on a spotlight section of thick bamboo, and the one end that the objective installation section of thick bamboo was kept away from to the guide cylinder can stretch out the second barrel and get into in the spotlight section of thick bamboo.

Optionally, the lifting device further comprises a control module, and the control module is electrically connected with the first rotating cylinder and the operating part respectively to adjust the first lifting part and the second lifting part.

Optionally, the display device further comprises a storage module, configured to store the display screen of the display screen.

Has the advantages that:

according to the portable digital microscope provided by the utility model, the first lifting piece can move along the axial direction of the first cylinder body by rotating the first rotating cylinder, so that the distance between the photosensitive chip and the objective lens is adjusted. First barrel sets up on the casing, and first rotatory section of thick bamboo rotates to set up in first barrel, makes it can not follow axial motion by first barrel restriction first rotatory section of thick bamboo, and the spacing of first rotatory section of thick bamboo is stable, has promoted the long-term stability of using of microscope. The first barrel is directly restrained by the shell, a barrel connecting piece is not required to be arranged, the first lifting piece can move between two ends of the first barrel along the axis direction of the first barrel, the moving range is large, and the zooming range of the microscope is enlarged. The objective lens is arranged on the second adjusting component and is independent from the photosensitive chip, so that the zoom range of the microscope is further enlarged.

Drawings

Fig. 1 is a schematic structural diagram of a portable digital microscope provided by an embodiment of the utility model;

fig. 2 is an exploded view of the first and second adjustment assemblies of fig. 1.

In the figure:

1. a housing; 11. a first housing; 111. pressing a key; 1111. a switch key position; 112. a receiving cylinder; 12. a second housing; 13. a gasket;

2. a first adjustment assembly; 21. a first lifting member; 211. a first protrusion; 22. a first rotary cylinder; 221. a first spiral limiting groove; 222. a support ring; 223. an operation section; 23. a first cylinder; 231. a first lifting groove; 232. a limiting bulge; 24. an operating cover;

3. a photosensitive chip;

4. a second adjustment assembly; 41. a second lifting member; 411. an objective lens mounting cylinder; 412. a guide cylinder; 413. a guide rib; 414. a toothed plate; 42. an operating member; 421. a knob; 422. a gear; 43. a second cylinder; 431. a guide groove;

5. an objective lens;

6. a display screen;

7. a light-gathering cylinder;

8. and a storage module.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, the present embodiment provides a portable digital microscope including a housing 1, a first conditioning assembly 2, a light sensing chip 3, a second conditioning assembly 4, an objective lens 5, and a display screen 6. First adjusting part 2 and second adjusting part 4 all set up on casing 1, and sensitization chip 3 sets up on first adjusting part 2, and objective 5 sets up on second adjusting part 4, and sensitization chip 3 and objective 5 set up relatively, adjust first adjusting part 2 and/or second adjusting part 4 all can change the relative position between sensitization chip 3 and the objective 5 to realize zooming. The objective lens 5 and the photosensitive chip 3 are respectively arranged on different adjusting components and are adjusted independently, so that the zoom range of the portable digital microscope can be enlarged. The display screen 6 is disposed on the housing 1 and electrically connected to the photosensitive chip 3 to display an image displayed by the objective lens 5 acquired by the photosensitive chip 3. Wherein the first adjusting assembly 2 comprises a first lifter 21, a first rotary cylinder 22 and a first cylinder 23. The first cylinder 23 is arranged on the housing 1, the first rotating cylinder 22 is rotatably arranged in the first cylinder 23, the first lifting member 21 is movably arranged on the first rotating cylinder 22, and the first lifting member 21 can move along a first direction by rotating the first rotating cylinder 22, wherein the first direction is parallel to the axial direction of the first cylinder 23. The photosensitive chip 3 is arranged on the first lifting piece 21 and moves in the first direction along with the movement of the first lifting piece 21, so that the distance between the photosensitive chip and the objective lens 5 is changed, and zooming is realized.

Specifically, the housing 1 includes a first housing 11 and a second housing 12 that can be connected as a whole, and the first housing 11 and the second housing 12 can be clamped, bonded or bolted together, which is not limited herein. The first housing 11 includes a receiving cylinder 112 and a mounting groove (not shown in the drawings). The mounting groove is used for mounting a display screen 6 to display the image acquired by the photosensitive chip 3. The main structures of the first adjusting assembly 2 and the second adjusting assembly 4 are both installed in the accommodating cylinder 112. The axial direction of the containing cylinder 112 is parallel to the first direction, and the axes of the first elevating member 21, the first rotary cylinder 22, and the first cylinder 23 all coincide with the axis of the containing cylinder 112. First barrel 23 is fixed to be worn to establish in holding a section of thick bamboo 112, and first rotatory section of thick bamboo 22 rotates to wear to establish in first barrel 23, makes it can not follow axial motion by first barrel 23 restriction first rotatory section of thick bamboo 22, and first rotatory section of thick bamboo 22 is spacing stable, has promoted the stability of microscope long-term use. The first lifting member 21 is movably inserted into the first rotary cylinder 22. The first rotary cylinder 22 is rotated, the first cylinder 23 is fixed, and the first elevating member 21 can move in the first direction. The first barrel 23 is directly restrained by the shell 1, barrel connecting pieces do not need to be arranged, the first lifting piece 21 can move between two ends of the first barrel 23 along the axial direction of the first barrel 23, the moving range is large, and the zooming range of the microscope is enlarged.

In this embodiment, the photosensitive chip 3 and the objective lens 5 are disposed opposite to each other along the first direction, and the photosensitive chip 3 and the objective lens 5 can move along the first direction by adjusting the first adjusting component 2 and the second adjusting component 4, respectively, so as to change the relative distance between the photosensitive chip 3, the objective lens 5 and the object to be observed, thereby achieving zooming. The photosensitive chip 3 may adopt a CCD sensor or a CMOS sensor, and certainly includes a corresponding driving circuit thereof, which is not described herein again.

Optionally, a first lifting groove 231 is formed in the first cylinder 23 along the first direction, a first spiral limiting groove 221 is formed in the first rotating cylinder 22, a first protrusion 211 is arranged on the first lifting member 21, the first protrusion 211 penetrates through the first spiral limiting groove 221 and is in sliding connection with the first lifting groove 231, and the first rotating cylinder 22 is rotated to drive the first protrusion 211 to slide along the first lifting groove 231, so that the first lifting member 21 moves along the first direction, and therefore adjustment of the distance between the photosensitive chip 3 and the objective lens 5 is achieved. Specifically, as shown in fig. 2, two first lifting grooves 231 equal to the first barrel 23 are disposed on two opposite sides of the inner wall of the first barrel 23 along the first direction, and each first lifting groove 231 does not penetrate through the inner wall of the first barrel 23, so that light between the objective lens 5 and the photosensitive chip 3 cannot leak out of the first barrel 23 from the first lifting groove 231, the utilization rate of the light source is improved, and observation is clear. On the first rotating cylinder 22, the two first spiral limiting grooves 221 both penetrate through the cylinder wall of the first rotating cylinder 22, and the length in the first direction is the same as that of the first lifting groove 231. The first lifting piece 21 is a circular ring provided with two first protrusions 211, the first protrusions 211 are symmetrically fixed on the circumference of the circular ring, and the photosensitive chip 3 is nested and fixed in the circular ring.

When assembling the first adjusting assembly 2, first, the first lifting member 21 is inserted into the first rotating cylinder 22, and the two first protrusions 211 are respectively inserted into the corresponding first spiral limiting grooves 221. Next, the two first lifting grooves 231 of the first cylinder 23 are aligned with the corresponding first protrusions 211 along the first direction. Finally, each first protrusion 211 is slidably inserted into the corresponding first lifting groove 231, and the first cylinder 23 is sleeved outside the first rotary cylinder 22. At this time, any one of the first protrusions 211 passes through the corresponding first spiral limiting groove 221 and abuts on the corresponding first lifting groove 231. The first cylinder 23 is fixed so that the first protrusion 211 can only slide back and forth along the first elevation groove 231, restricting the rotational movement of the photosensitive chip 3 in the circumferential direction of the first cylinder 23. Therefore, when the first rotary cylinder 22 is rotated, the first spiral limiting groove 221 rotates along with the first rotary cylinder, and due to the limitation of the first lifting groove 231 in the circumferential direction, the first protrusion 211 does not rotate along with the first spiral limiting groove 221, but slides along the direction of the first lifting groove 231 under the action of the two groove sides of the first spiral limiting groove 221, so that the position of the photosensitive chip 3 in the first direction is adjusted, and zooming is achieved.

Optionally, the two first spiral limiting grooves 221 are disposed oppositely, and the angle range distributed along the circumferential direction of the first rotating cylinder 22 does not exceed 90 °, so that the first rotating cylinder 22, the first lifting piece 21 and the first cylinder 23 can be assembled conveniently, and the first rotating cylinder is convenient to disassemble and assemble. Meanwhile, the first elevation member 21 can be made to achieve the maximum stroke range, i.e., to freely slide at both ends of the first elevation groove 231 without movement interference.

As shown in fig. 1 and 2, the upper end of the first rotating cylinder 22 is fixedly connected with an operating portion 223, and when the first cylinder 23 is assembled outside the first rotating cylinder 22, the height of the operating portion 223 is higher than that of the upper end of the first cylinder 23, so as to facilitate the operation of the first rotating cylinder 22. In order to prevent foreign matter from entering the first adjusting unit 2, the portable digital microscope further includes an operating cover 24. The operation part 223 of the first rotary cylinder 22 and the operation cover 24 are both provided with screw holes, the operation cover 24 is fixed on the operation part 223 through screws, and the first rotary cylinder 22 can be rotated by screwing the operation cover 24, so that the operation is convenient.

When assembling, the first adjusting assembly 2 can be inserted into the accommodating cylinder 112 from below the first housing 11. A snap ring (not shown) is disposed at an upper end aperture of the accommodating cylinder 112, the operating portion 223 of the first rotary cylinder 22 extends from the snap ring, and an upper end of the first cylinder 23 abuts against a lower portion of the snap ring and is limited by the snap ring, so as to prevent the first cylinder 23 from sliding out of the first housing 11 from the upper end of the accommodating cylinder 112. The lower end of the first rotary cylinder 22 is fixedly connected with a support ring 222, and the lower end of the first cylinder 23 is limited by the support ring 222. At this time, the movement of the first rotating cylinder 22 and the first cylinder 23 along the first direction can be limited only by arranging the support at the lower end of the support ring 222 of the first rotating cylinder 22, and the structure is simple and the installation is convenient. In order to prevent the first cylinder 23 from rotating along with the first rotary cylinder 22, the outer wall of the first cylinder 23 is fixedly connected with a limiting protrusion 232, and the limiting protrusion 232 is clamped in the accommodating cylinder 112.

Optionally, the second adjusting assembly 4 includes a second lifting member 41, an operating member 42 and a second cylinder 43, the objective lens 5 is disposed on the second lifting member 41, the second lifting member 41 is slidably disposed on the second cylinder 43 along the first direction, the second cylinder 43 is disposed on the housing 1, and the operating member 42 is in transmission connection with the second lifting member 41 to drive the second lifting member 41 to slide. In one embodiment, the operating member 42 includes a knob 421 and a gear 422, the second lifting member 41 is provided with a toothed plate 414 extending along the first direction, the gear 422 is engaged with the toothed plate 414, and the rotation knob 421 can drive the toothed plate 414 to move along the first direction to drive the second lifting member 41 to slide, so as to adjust the position of the objective lens 5 in the first direction. The embodiment has simple structure, high transmission precision and convenient fine adjustment due to the transmission mode of the gear 422 and the toothed plate 414. Specifically, the axes of the second cylinder 43 and the first cylinder 23 are overlapped, after assembly, the upper end of the second cylinder 43 is connected to the lower end of the first rotating cylinder 22, the objective lens 5 is installed in the second lifting member 41, and the second lifting member 41 can be inserted into the second cylinder 43 from the lower side of the second cylinder 43. The knob 421 is located below the second cylinder 43 and at one side of the second lifting member 41, and the second lifting member 41 can slide along the first direction by rotating the knob 421. In another embodiment, the second lifting member 41 has the same structure as the first lifting member 21, the operating member 42 has the same structure as the first rotating cylinder 22, the second cylinder 43 has the same structure as the first cylinder 23, the position of the objective lens 5 can be adjusted to achieve zooming, and the plurality of parts are the same, so that the production and the manufacture are convenient, and the cost is reduced.

Alternatively, one of the second lifter 41 and the second cylinder 43 may be provided with a guide rib 413 extending in the first direction, and the other may be provided with a guide groove 431 engaged with the guide rib 413. In one embodiment, as shown in fig. 2, the second cylinder 43 is provided with two guide grooves 431 along the first direction, and the second lifting member 41 is provided with two guide ribs 413 along the first direction, and each guide rib 413 can be inserted into the corresponding guide groove 431 to guide the sliding of the second lifting member 41 along the first direction. In another embodiment, the second lifter 41 may be provided with a guide groove extending in the first direction, and the second cylinder 43 may be provided with a guide rib extending in the first direction, so that the second lifter 41 can slide on the second cylinder 43 in the same manner.

Alternatively, the second lifter 41 includes an objective lens mounting cylinder 411 and a guide cylinder 412 that are connected and communicated in the first direction, the objective lens 5 is disposed in the objective lens mounting cylinder 411, and the guide cylinder 412 is disposed closer to the object to be observed than the objective lens mounting cylinder 411. The guide cylinder 412 separates the objective lens 5 from the object to be observed, so as to prevent the objective lens 5 from contacting with the object to be observed, so as to prevent the objective lens 5 from being polluted and influence the imaging quality of the photosensitive chip 3.

Preferably, the portable digital microscope further includes a condenser tube 7 and a light source, the light source is disposed on the condenser tube 7, and one end of the guide tube 412 away from the objective lens mounting tube 411 can extend out of the second tube 43 and enter into the condenser tube 7. In this embodiment, a through hole is formed in the wall of the second housing 12, the gasket 13 and the light collecting cylinder 7 are respectively disposed on the upper and lower sides of the wall, and the second lifting member 41 is located above the gasket 13. The knob 421 is rotated to make the objective lens mounting tube 411 and the guide tube 412 move downward along the first direction, the guide tube 412 sequentially passes through the gasket 13 and the second housing 12 to enter the light-gathering tube 7, and the photosensitive chip 3 can collect the image of the object to be observed in the light-gathering tube 7. Specifically, the light-gathering cylinder 7 includes a mounting ring and a half cylinder connected to each other, the mounting ring is attached to and fixed below the second housing 12, and the light source is fixed to the inner wall of the half cylinder on the closed side thereof to provide illumination for an object to be observed. The sealed side of half barrel can improve the availability factor of light source, promotes the image quality that photosensitive chip 3 gathered. One side of the opening of the semi-cylinder body is convenient for taking and placing the object to be observed. The objective lens mounting cylinder 411 is a circular tube, and the guide cylinder 412 is a tapered tube, so that the second lifter 41 can smoothly pass through the second cylinder 43, the spacer 13, the second housing 12, and the condenser cylinder 7.

Optionally, the portable digital microscope further comprises a control module (not shown in the figure), which is electrically connected to the first rotating cylinder 22 and the operating member 42, respectively, to adjust the first lifting member 21 and the second lifting member 41, so as to achieve automatic zooming. In this embodiment, a first driving member (not shown) is disposed on the first rotating cylinder 22, the control module is electrically connected to the first driving member, and the control module sends an instruction to the first driving member to drive the first rotating cylinder 22 to rotate, so as to adjust the position of the first lifting member 21, and thus adjust the position of the photosensitive chip 3. The operating element 42 is provided with a second driving element (not shown), the control module is electrically connected to the second driving element, and the control module sends a command to the second driving element to drive the knob 421 on the operating element 42 to rotate, so as to adjust the position of the second lifting element 41, and thus adjust the position of the objective lens 5. The photosensitive chip 3 and the objective lens 5 are adjusted by the control module, the adjusting precision is high, and the operating efficiency is greatly improved.

For the convenience of operation, the microscope is further provided with keys 111, and the keys 111 may include a switch key 1111, a photographing key, a video recording key, a storage key, a page up key, a page down key, etc. to control the display frame of the display screen 6 to implement the corresponding key functions.

Optionally, the portable digital microscope further comprises a storage module 8 for storing the display image of the display screen 6. In this embodiment, the storage module 8 is an SD memory card, which has a small size, a fast data transmission speed, and is convenient for plugging.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A portable digital microscope, comprising:

a housing (1);

the first adjusting assembly (2) comprises a first lifting piece (21), a first rotating cylinder (22) and a first cylinder body (23), the first cylinder body (23) is arranged on the shell (1), the first rotating cylinder (22) is rotatably arranged in the first cylinder body (23), the first lifting piece (21) is movably arranged on the first rotating cylinder (22), and the first lifting piece (21) can move along a first direction by rotating the first rotating cylinder (22), wherein the first direction is parallel to the axial direction of the first cylinder body (23);

a photosensitive chip (3) disposed on the first elevating member (21);

a second adjustment assembly (4) arranged on the housing (1);

an objective lens (5) arranged on the second adjustment assembly (4);

the photosensitive chip (3) and the objective lens (5) are arranged oppositely, and the relative position between the photosensitive chip (3) and the objective lens (5) can be changed by adjusting the first adjusting component (2) and/or the second adjusting component (4);

the display screen (6), the display screen (6) set up on casing (1), and with sensitization chip (3) electricity is connected.

2. The portable digital microscope according to claim 1, wherein a first lifting groove (231) is formed in the first cylinder (23) along the first direction, a first spiral limiting groove (221) is formed in the first rotating cylinder (22), a first protrusion (211) is formed on the first lifting member (21), the first protrusion (211) penetrates through the first spiral limiting groove (221) to be slidably connected with the first lifting groove (231), and the first protrusion (211) can be driven to slide along the first lifting groove (231) by rotating the first rotating cylinder (22) so that the first lifting member (21) can move along the first direction.

3. The portable digital microscope according to claim 2, wherein the first spiral limiting grooves (221) are provided in two numbers, and the two first spiral limiting grooves (221) are disposed opposite to each other and distributed along the circumferential direction of the first rotating cylinder (22) in an angular range not exceeding 90 °.

4. The portable digital microscope according to claim 1, wherein the second adjusting assembly (4) comprises a second lifting member (41), an operating member (42) and a second cylinder (43), the objective lens (5) is disposed on the second lifting member (41), the second lifting member (41) is slidably disposed on the second cylinder (43) along the first direction, the second cylinder (43) is disposed on the housing (1), and the operating member (42) is in transmission connection with the second lifting member (41) to drive the second lifting member (41) to slide.

5. The portable digital microscope according to claim 4, wherein the operating member (42) comprises a knob (421) and a gear (422) connected to each other, a toothed plate (414) extending along the first direction is disposed on the second lifting member (41), the gear (422) is engaged with the toothed plate (414), and the toothed plate (414) can be driven to move along the first direction by rotating the knob (421) so as to slide the second lifting member (41).

6. The portable digital microscope according to claim 5, wherein a guide rib (413) extending in the first direction is provided on either one of the second elevating member (41) and the second cylinder (43), and a guide groove (431) engaged with the guide rib (413) is provided on the other.

7. The portable digital microscope according to claim 4, wherein the second elevating member (41) includes an objective lens mounting cylinder (411) and a guide cylinder (412) connected in communication in the first direction, the objective lens (5) being disposed in the objective lens mounting cylinder (411), the guide cylinder (412) being disposed closer to an object to be observed than the objective lens mounting cylinder (411).

8. The portable digital microscope according to claim 7, further comprising a light-condensing cylinder (7) and a light source, the light source being disposed on the light-condensing cylinder (7), wherein an end of the guide cylinder (412) remote from the objective lens mounting cylinder (411) is capable of protruding out of the second cylinder (43) and entering into the light-condensing cylinder (7).

9. The portable digital microscope according to claim 4, further comprising a control module electrically connected to the first rotary cylinder (22) and the operating member (42), respectively, to adjust the first elevating member (21) and the second elevating member (41).

10. Portable digital microscope according to any of claims 1 to 9, further comprising a storage module (8) for storing the display of the display screen (6).

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