A device for adjusting the decentration of an objective lens group

Abstract

The utility model relates to a kind of device for adjusting objective lens group eccentricity, the device includes workbench;The workbench is provided with transmission type eccentricity instrument, display screen and image processor;The top of the transmission type eccentricity instrument is screw-jointed with camera;The camera, transmission type eccentricity instrument, display screen and image processor are electrically connected by wiring harness;Transmission type eccentricity instrument is provided with three-jaw clamping groove;Three-jaw clamping groove is provided with detection fixture;Objective lens group is placed on the detection fixture;Glue stick and bamboo sheet are also placed on the workbench.Compared with prior art, the utility model has the advantages of adjusting eccentricity, reducing objective lens group lens performance defective rate and the like.

Description

Technical Field

[0001] This utility model relates to the field of objective lens group eccentricity adjustment technology, and in particular to a device for adjusting the eccentricity of an objective lens group. Background Technology

[0002] Objective lens groups are typically assembled by bonding lens elements to the lens barrel using UV adhesive. However, since the eccentricity of the entire objective lens group is unknown after assembly, it can affect the final performance of the lens. Therefore, it is necessary to detect and adjust the eccentricity of the objective lens group. However, current assembly methods involve bonding the lens elements to the lens barrel with UV adhesive, which is unadjustable once cured, making eccentricity adjustment impossible. Therefore, a device is needed to pre-control and adjust the eccentricity of the objective lens group. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a device for adjusting the eccentricity of the objective lens group.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A device for adjusting the eccentricity of an objective lens group, the device comprising a worktable; a transmission-type eccentricity meter, a display screen, and an image processor are mounted on the worktable; a camera is screwed to the top of the transmission-type eccentricity meter; the camera, transmission-type eccentricity meter, display screen, and image processor are electrically connected via a wiring harness; the transmission-type eccentricity meter is provided with a three-jaw chuck; a testing fixture is provided in the three-jaw chuck; the objective lens group is placed on the testing fixture; and a glue rod and a bamboo strip are also placed on the worktable.

[0006] Furthermore, the display screen is connected to a keyboard and mouse; the keyboard and mouse are placed on the workbench.

[0007] Furthermore, an ultraviolet lamp is also provided on the workbench; the ultraviolet lamp is positioned directly opposite the objective lens group on the testing fixture.

[0008] Furthermore, the objective lens group is an objective lens group with UV glue applied but not cured.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] This invention uses a bamboo strip to rotate the spacer of the objective lens assembly, observing the image jump on the display screen to determine whether the overall eccentricity of the objective lens assembly is within the required range. Then, a glue stick is used to press against the lens part of the objective lens assembly to adjust the eccentricity. After the eccentricity of the objective lens assembly is within the required range, ultraviolet light is used to irradiate the UV glue of the objective lens assembly to completely cure it, thereby meeting the eccentricity requirement and reducing the probability of poor lens performance in the final objective lens assembly. The structure is simple and the adjustment is convenient and quick. Attached Figure Description

[0011] Figure 1 A schematic diagram of the device structure provided by this utility model;

[0012] Figure 2 A schematic diagram of the testing fixture provided by this utility model;

[0013] Figure 3 This is a schematic diagram of the objective lens group eccentricity detection provided by this utility model;

[0014] Figure 4 A schematic diagram of the objective lens group eccentricity adjustment provided by this utility model.

[0015] The labels in the diagram indicate:

[0016] 1. Objective lens group; 2. Inspection fixture; 3. Glue rod; 4. Bamboo strip; 5. Ultraviolet lamp; 6. Camera; 7. Transmission-type eccentricity meter; 8. Display screen; 9. Image processor; 10. Keyboard; 11. Mouse; 12. Worktable; 13. Three-jaw chuck. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] Example

[0024] like Figure 1 and 2 As shown, a device for adjusting the eccentricity of an objective lens group is disclosed. The device includes a worktable 12; a transmission-type eccentricity meter 7, a display screen 8, and an image processor 9 are mounted on the worktable 12; a camera 6 is screwed to the top of the transmission-type eccentricity meter 7 for capturing images; the camera 6, the transmission-type eccentricity meter 7, the display screen 8, and the image processor 9 are electrically connected via wiring harnesses, all of which are connected in fixed positions; a three-jaw chuck slot 13 is provided on the transmission-type eccentricity meter 7; a testing fixture 2 is provided in the three-jaw chuck slot 13; an objective lens group 1 is placed on the testing fixture 2, and the lenses on the objective lens group 1 are glued to the lens barrel with UV glue, but the glue has not yet cured; a glue stick 3 and a bamboo strip 4 are also placed on the worktable 12; a keyboard 10 and a mouse 11 are connected to the display screen 8; the keyboard 10 and mouse 11 are placed on the worktable 12; an ultraviolet lamp 5 is also provided on the worktable 12; the ultraviolet lamp 5 is directed towards the objective lens group 1 on the testing fixture 2.

[0025] The working principle of this utility model is as follows:

[0026] First, turn on the entire device, place the objective lens group 1 on the testing fixture 2, then adjust the distance between the transmission polarizer 10X objective lens and the objective lens group 1 on the transmission polarizer 7. Use the keyboard 10 and mouse 11 to set the polarization detection parameters on the display screen 8, and start the camera 6 to take pictures. The image captured by the camera 6 will be processed by the image processor 9 and projected onto the display screen 8. Figure 3 As shown, at this time, bamboo strip 4 is used to press against the spacer part of objective lens group 1 through the groove of the detection fixture 2, the spacer part of objective lens group 1 is rotated, and the amount of image jump in the display screen 8 is observed to determine whether the overall eccentricity of objective lens group 1 is within the required range.

[0027] like Figure 4 As shown, if the eccentricity of objective lens group 1 is not within the required range, use glue stick 3 to hold the lens part of objective lens group 1 and adjust the eccentricity of objective lens group 1 by using glue stick 3. After the eccentricity of objective lens group 1 is within the required range, stop adjusting and then turn on the ultraviolet lamp 5 to irradiate and completely cure the UV glue of objective lens group 1. At this time, the objective lens group 1 obtained is the finished product with the required eccentricity.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A device for adjusting the eccentricity of an objective lens group, characterized in that, The device includes a workbench (12); a transmission-type eccentricity meter (7), a display screen (8), and an image processor (9) are provided on the workbench (12); a camera (6) is screwed onto the top of the transmission-type eccentricity meter (7); the camera (6), the transmission-type eccentricity meter (7), the display screen (8), and the image processor (9) are electrically connected by a wire harness; a three-jaw chuck (13) is provided on the transmission-type eccentricity meter (7); a detection fixture (2) is provided in the three-jaw chuck (13); an objective lens group (1) is placed on the detection fixture (2); a glue rod (3) and a bamboo strip (4) are also placed on the workbench (12).

2. The device for adjusting the eccentricity of an objective lens group according to claim 1, characterized in that, The display screen (8) is connected to a keyboard (10) and a mouse (11); the keyboard (10) and mouse (11) are placed on a workbench (12).

3. The device for adjusting the eccentricity of an objective lens group according to claim 1, characterized in that, The workbench (12) is also equipped with an ultraviolet lamp (5); the ultraviolet lamp (5) is facing the objective lens group (1) on the testing fixture (2).

4. The device for adjusting the eccentricity of an objective lens group according to claim 1, characterized in that, The objective lens group (1) is an objective lens group with UV glue applied but not cured.

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