Apochromatic microscope objective

Abstract

The utility model provides an apochromatic microscope objective, which comprises a first lens cone and a second lens cone, a groove is arranged in the first lens cone, the groove corresponds to the second lens cone, an elastic structure is arranged between the groove and the second lens cone, a thread bushing is matched in the groove in a threaded manner, the thread bushing corresponds to the second lens cone, and the elastic structure is arranged in the groove. A first electrode plate is fixed on the threaded sleeve, a second electrode plate is arranged on the second lens barrel, and the second electrode plate is in contact with the first electrode plate. According to the utility model, the groove is arranged in the first lens barrel, the elastic structure is arranged between the groove and the second lens barrel, and the second lens barrel can be buffered through the elastic structure, so that the second lens barrel is prevented from being damaged due to larger pressure, and the distance between the second lens barrel and the cover glass is not influenced; the second electrode plate is arranged on the second lens barrel, and the alarm can be controlled to give an alarm through the first electrode plate and the second electrode plate, so that the objective lens can be stopped moving in time.

Description

Technical Field

[0001] The utility model relates to the technical field of objective lenses, in particular to an apochromatic microscope objective lens. Background Art

[0002] A microscope is an optical instrument composed of a lens or a combination of several lenses. It is a symbol of mankind entering the atomic age. The magnification effect of a microscope mainly depends on the objective lens. The quality of the objective lens directly affects the image quality of the microscope. It is the main component that determines the resolution and imaging clarity of the microscope. For example, the patent with publication number CN214427675U discloses a biological microscope objective lens structure, including an objective lens, a lens is arranged on the top of the objective lens, a buffer rubber is fixedly installed on the outside of the lens, a pressure sensor is arranged inside the buffer rubber, and a buzzer alarm is fixedly installed on the left side of the objective lens. The objective lens structure of the biological microscope is provided with a buffer rubber on the outside of the lens, and the buffer rubber can be used to buffer and protect the lens, so that the objective lens can be prevented from pressing on the glass slide and crushing the glass slide, and the lens can also be prevented from being damaged. A pressure sensor is provided inside the buffer rubber, and when the pressure sensor detects pressure, the signal is transmitted to a buzzer alarm, and the buzzer alarm is used to emit a buzzer sound to remind the operator. However, the distance between the objective lens and the cover glass of the microscope is usually small, and the pressure sensor and the buffer rubber have a certain thickness, so that the distance between the objective lens and the cover glass is easily too large, thereby affecting the use of the objective lens.

[0003] To this end, the utility model provides an apochromatic microscope objective lens. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide an achromatic microscope objective lens to solve the problems raised in the above-mentioned background technology. The utility model can buffer the second lens barrel through an elastic structure, thereby preventing the second lens barrel from being damaged by a large pressure; the alarm can be controlled by the first electrode sheet and the second electrode sheet to sound an alarm, thereby stopping the movement of the objective lens in time; and the second lens barrel can also be put into a groove and a threaded sleeve to protect the second lens barrel.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: an apochromatic microscope objective lens, comprising a first lens barrel and a second lens barrel, a groove is provided in the first lens barrel, the groove corresponds to the second lens barrel, an elastic structure is installed between the groove and the second lens barrel, a threaded sleeve is matched with the threaded sleeve, the threaded sleeve corresponds to the second lens barrel, a first electrode sheet is fixed on the threaded sleeve, a second electrode sheet is installed on the second lens barrel, and the second electrode sheet contacts the first electrode sheet.

[0006] Furthermore, the elastic structure includes a first limit block, a second limit block and a spring, and two ends of the spring are fixedly connected to the first limit block and the second limit block respectively.

[0007] Furthermore, the first limiting block is fixedly connected to the inner wall of the groove, and the second limiting block is in contact with the second lens barrel.

[0008] Furthermore, a push block is fixed on the second lens barrel, the push block is fixedly connected to the second electrode sheet, and the push block is located between the second limiting block and the threaded sleeve.

[0009] Furthermore, a thread groove is provided in the groove, and the thread groove corresponds to the thread sleeve.

[0010] Furthermore, a fixing ring is installed at the lower side of the second lens barrel, a plurality of supporting rods are installed on the fixing ring, and the fixing ring is fixed by clamping with the threaded sleeve.

[0011] Furthermore, one end of the support rod is in contact with the second lens barrel, the support rod is fixedly connected to the fixing ring obliquely upward, a plurality of clamping blocks are fixed on the fixing ring, a plurality of clamping grooves are opened in the threaded sleeve, and the clamping grooves correspond to the clamping blocks.

[0012] Furthermore, an alarm is fixed to one side of the first lens barrel, and the first electrode sheet and the second electrode sheet are connected to the alarm via wires.

[0013] Beneficial effects of the utility model: The utility model is an achromatic microscope objective lens, comprising a first lens barrel; a groove; a second lens barrel; an elastic structure; a threaded sleeve; a first electrode sheet; a second electrode sheet; and an alarm.

[0014] A groove is provided in the first lens barrel, and an elastic structure is installed between the groove and the second lens barrel. The elastic structure can be used to buffer the second lens barrel, thereby preventing the second lens barrel from being damaged by a large pressure, and will not affect the distance between the second lens barrel and the cover glass. A first electrode sheet is installed on the threaded sleeve, and a second electrode sheet is installed on the second lens barrel. The first electrode sheet and the second electrode sheet can be used to control an alarm to sound an alarm, thereby stopping the movement of the objective lens in time, and the second lens barrel can be put into the groove and the threaded sleeve, thereby protecting the second lens barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall assembly three-dimensional structure of an apochromatic microscope objective lens of the utility model;

[0016] Figure 2 It is a schematic diagram of the assembly cross-sectional structure of an apochromatic microscope objective lens as a whole of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the middle A;

[0018] Figure 4 It is a schematic diagram of the assembly structure of the second lens barrel of the apochromatic microscope objective lens of the utility model when it is stored;

[0019] In the figure: 1, first lens barrel; 2, second lens barrel; 3, alarm; 4, threaded groove; 5, threaded sleeve; 6, spring; 7, first limit block; 8, second limit block; 9, push block; 10, first electrode sheet; 11, second electrode sheet; 12, fixing ring; 13, clamping block; 14, clamping groove; 15, support rod; 16, groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: an apochromatic microscope objective lens, comprising a first lens barrel 1 and a second lens barrel 2, wherein a groove 16 is provided in the first lens barrel 1, the groove 16 corresponds to the second lens barrel 2, an elastic structure is arranged between the groove 16 and the second lens barrel 2, a threaded sleeve 5 is matched with the inner thread of the groove 16, the threaded sleeve 5 corresponds to the second lens barrel 2, a first electrode sheet 10 is fixed on the threaded sleeve 5, a second electrode sheet 11 is arranged on the second lens barrel 2, and the second electrode sheet 11 contacts the first electrode sheet 10, wherein the internal structures of the first lens barrel 1 and the second lens barrel 2 are the same as the first barrel and the second barrel structures in a plan apochromatic objective lens disclosed in the patent with publication number CN209784645U, and the error is eliminated by adjusting the second barrel.

[0022] In this embodiment, the elastic structure includes a first limit block 7, a second limit block 8 and a spring 6, the two ends of the spring 6 are fixedly connected to the first limit block 7 and the second limit block 8 respectively, the first limit block 7 is fixedly connected to the inner wall of the groove 16, the second limit block 8 is in contact with the second lens barrel 2, a push block 9 is fixed on the second lens barrel 2, the push block 9 is fixedly connected to the second electrode sheet 11, the push block 9 is located between the second limit block 8 and the threaded sleeve 5, an alarm 3 is fixed on one side of the first lens barrel 1, and the first electrode sheet 10 and the second electrode sheet 11 are connected to the alarm 3 through wires.

[0023] Specifically, when the second lens barrel 2 contacts the cover glass, the cover glass will press the second lens barrel 2 upward, causing the second lens barrel 2 to move upward relative to the first lens barrel 1, thereby compressing the spring 6 and generating a gap between the push block 9 and the threaded sleeve 5, causing the first electrode sheet 10 to separate from the second electrode sheet 11, thereby causing the alarm 3 to sound an alarm, thereby preventing the second lens barrel 2 from being pressed against the cover glass and causing damage.

[0024] In particular, the second lens barrel 2 can be moved by rotating the threaded sleeve 5 , thereby adjusting the overall length of the second lens barrel 2 and the first lens barrel 1 , and adjusting the distance between the second lens barrel 2 and the first lens barrel 1 .

[0025] A thread groove 4 is provided in the groove 16, and the thread groove 4 corresponds to the threaded sleeve 5. A fixing ring 12 is installed on the lower side of the second lens barrel 2, and a plurality of support rods 15 are installed on the fixing ring 12. The fixing ring 12 is clamped and fixed with the threaded sleeve 5. One end of the support rod 15 is in contact with the second lens barrel 2, and the support rod 15 is fixedly connected to the fixing ring 12 obliquely upward. A plurality of clamping blocks 13 are fixed on the fixing ring 12, and a plurality of clamping grooves 14 are provided in the threaded sleeve 5, and the clamping grooves 14 correspond to the clamping blocks 13.

[0026] Specifically, when the objective lens is not needed, the fixing ring 12 can be installed, and the second lens barrel 2 can be pushed upward by the fixing ring 12 so that the second lens barrel 2 is completely inserted into the threaded sleeve 5 and the groove 16. Then, the fixing ring 12 is fixed to the threaded sleeve 5 by the clamping block 13 and the clamping groove 14, so that the second lens barrel 2 can be stored and protected.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An apochromatic microscope objective lens, comprising a first lens barrel (1) and a second lens barrel (2), characterized in that: A groove (16) is provided in the first lens barrel (1), the groove (16) corresponds to the second lens barrel (2), an elastic structure is arranged between the groove (16) and the second lens barrel (2), a threaded sleeve (5) is matched with the inner thread of the groove (16), the threaded sleeve (5) corresponds to the second lens barrel (2), a first electrode sheet (10) is fixed on the threaded sleeve (5), a second electrode sheet (11) is arranged on the second lens barrel (2), and the second electrode sheet (11) contacts the first electrode sheet (10).

2. An apochromatic microscope objective according to claim 1, characterized in that: The elastic structure comprises a first limit block (7), a second limit block (8) and a spring (6), and two ends of the spring (6) are fixedly connected to the first limit block (7) and the second limit block (8) respectively.

3. An apochromatic microscope objective according to claim 2, characterized in that: The first limiting block (7) is fixedly connected to the inner wall of the groove (16), and the second limiting block (8) is in contact with the second lens barrel (2).

4. An apochromatic microscope objective according to claim 2, characterized in that: A push block (9) is fixed on the second lens barrel (2), the push block (9) is fixedly connected to the second electrode sheet (11), and the push block (9) is located between the second limit block (8) and the threaded sleeve (5).

5. The apochromatic microscope objective according to claim 1, characterized in that: A thread groove (4) is provided in the groove (16), and the thread groove (4) corresponds to the thread sleeve (5).

6. The apochromatic microscope objective according to claim 1, characterized in that: A fixing ring (12) is installed on the lower side of the second lens barrel (2), a plurality of supporting rods (15) are installed on the fixing ring (12), and the fixing ring (12) is fixedly connected with the threaded sleeve (5) by clamping.

7. An apochromatic microscope objective according to claim 6, characterized in that: One end of the support rod (15) contacts the second lens barrel (2), the support rod (15) is fixedly connected to the fixing ring (12) obliquely upwards, a plurality of clamping blocks (13) are fixed on the fixing ring (12), a plurality of clamping grooves (14) are provided in the threaded sleeve (5), and the clamping grooves (14) correspond to the clamping blocks (13).

8. An apochromatic microscope objective according to claim 1, characterized in that: An alarm device (3) is fixed to one side of the first lens barrel (1), and the first electrode sheet (10) and the second electrode sheet (11) are connected to the alarm device (3) via electric wires.

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