A large field of view augmented reality microscope

Abstract

The present invention discloses a large field of view augmented reality microscope, which includes an eyepiece, an objective lens, and a large field of view augmented reality module disposed between the eyepiece and the objective lens; the large field of view augmented reality module includes a first lens group, a deflecting mirror, a second lens group, a first transmissive-reflective lens, a second transmissive-reflective lens, a fourth lens group, and a prism group sequentially arranged in the optical path from the objective lens to the eyepiece; the large field of view augmented reality module further includes a third lens group and a camera device for collecting images, as well as a screen display device and a fifth lens group for projecting images. The present invention can use a large field of view eyepiece to observe the microscope, and the information processed by artificial intelligence can be observed and displayed in the human eye, so as to solve the problem of the optical system of the augmented reality microscope with a small field of view, reduce the working intensity of operators and improve the imaging quality in batch observations.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging, and particularly to a large field of view augmented reality microscope. Background Art

[0002] With the rapid development of microscopy technology in recent years, it has been widely applied in many fields such as biology, medicine, electronics, semiconductors, and optical manufacturing. Microscopes have also evolved into various forms, structures, and imaging methods, playing important roles in different applications. However, currently, microscopes are still basically manually operated. Especially for on-site inspection and judgment purposes, such as pathological analysis in the medical field, the main task is to observe the target object through a microscope. Currently, many microscopes are equipped with an image acquisition system, that is, an electronic imaging device receives the microscopic image, displays it on a display screen for observation, which can reduce the fatigue caused by manual observation. However, there is a difference in the perception between the image observed on the screen and the image directly observed through the microscope. Therefore, in applications such as pathological analysis, operators still prefer direct observation to ensure the accuracy of the observation results. Thus, when the number of samples to be analyzed is too large, the working intensity and fatigue intensity of the operators will increase significantly, which will affect the observation and analysis results.

[0003] With the development of image processing, pattern recognition, and artificial intelligence technologies, the acquired microscopic images can be processed, and key targets can be automatically detected. Since the automatic detection results cannot be used as the final results, manual verification is often required. The small observation field of view is extremely likely to cause observer fatigue. How to reduce the working intensity and improve the quality of operators in large-scale observations is a problem to be solved.

[0004] Patent document CN 109031643A discloses an augmented reality microscope placed in a microscope in an intermediate body separated structure. Although the intermediate body separated structure is convenient for disassembly, its disadvantage is that it raises the head optical system, resulting in the inability to support a large field of view eyepiece, having certain limitations.

[0005] Patent document CN 110488479A discloses an augmented reality microscope, an image projection device, and an image processing system placed in a microscope in an intermediate body separated structure. Although the intermediate body separated structure is convenient for disassembly, its disadvantage is that it raises the head optical system, resulting in the inability to support a large field of view eyepiece, having certain limitations.

[0006] Patent document CN 112346233A discloses an augmented reality module for a microscope. Although the intermediate body separated structure is convenient for disassembly, its disadvantage is that it raises the head optical system, resulting in the inability to support a large field of view eyepiece, having certain limitations. Summary of the Invention

[0007] The object of the present invention is to overcome the deficiencies of the prior art and provide a large field of view augmented reality microscope, which can use a large field of view eyepiece to observe the microscope, and the information processed by artificial intelligence is displayed in the human eye, so as to solve the problems of the optical system of the augmented reality microscope with a small field of view, reduce the work intensity of operators and improve the imaging quality in batch observation.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a large field of view augmented reality microscope, including an eyepiece, an objective lens, and a large field of view augmented reality module disposed between the eyepiece and the objective lens; the large field of view augmented reality module includes a first lens group, a deflecting mirror, a second lens group, a first transmissive-reflective lens, a second transmissive-reflective lens, a fourth lens group, and a prism group sequentially arranged in the optical path from the objective lens to the eyepiece; the large field of view augmented reality module further includes a third lens group and a camera device for collecting images, and a screen display device and a fifth lens group for projecting images; the second lens group and the third lens group are respectively located at the front and rear ends of the optical path transmission path of the first transmissive-reflective lens, and the camera device is located outside the third lens group relative to the first transmissive-reflective lens; the fifth lens group and the fourth lens group are respectively located at the front and rear ends of the optical path transmission path of the second transmissive-reflective lens, and the screen display device is located outside the fifth lens group relative to the second transmissive-reflective lens.

[0009] Further, in the large field of view augmented reality microscope, the following conditions also need to be satisfied:

[0010] 6 < |f71 / W| < 9;

[0011] 1.1 < |f71 / f1| < 3.1;

[0012] 2.2 < |f71 / f2| < 4.2;

[0013] 2.7 < |f71 / f3| < 4.7;

[0014] 0.5 < |f71 / f4| < 2.5;

[0015] 0.5 < |f71 / f5| < 2.5;

[0016] Wherein, f71 is the combined focal length of the first lens group, the deflecting mirror, the second lens group, the first transmissive-reflective lens, the second transmissive-reflective lens, and the fourth lens group, W is the eyepiece field of view size, f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal length of the third lens group, f4 is the focal length of the fourth lens group, and f5 is the focal length of the fifth lens group.

[0017] The first lens group is disposed between the objective lens and the deflecting mirror, and the second lens group is disposed at a corresponding position of the deflecting mirror such that the light transmitted through the first lens group by the objective lens enters the second lens group after rotating 90° through the deflecting mirror; the first transmissive-reflective lens and the second transmissive-reflective lens are disposed at positions that cooperate with each other, and the light transmitted through the second lens group enters the fourth lens group after rotating 180° through the first transmissive-reflective lens and the second transmissive-reflective lens.

[0018] The first lens group includes, in order from the objective lens to the deflecting mirror, a first lens with a positive refractive power, a second lens with a positive refractive power, and a third lens with a negative refractive power, and the first lens, the second lens, and the third lens are in contact with each other; the first lens group converges the light from the objective lens, which is substantially parallel light, near the deflecting mirror, and the light convergence position is between the deflecting mirror and the first lens group or between the deflecting mirror and the second lens group.

[0019] The second lens group includes, in order from the deflecting mirror to the first transmissive-reflective lens, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, and a sixth lens with a positive refractive power, and the fourth lens, the fifth lens, and the sixth lens are in contact with each other; the second lens group causes the light emitted from the deflecting mirror to enter the first transmissive-reflective lens, and the first transmissive-reflective lens allows a certain proportion of the transmitted light in the light to enter the third lens group and a certain proportion of the reflected light in the light to enter the second transmissive-reflective lens.

[0020] The third lens group includes, in order from the first transmissive-reflective lens to the camera device, a seventh lens with a positive refractive power, an eighth lens with a negative refractive power, a ninth lens with a negative refractive power, and a tenth lens with a positive refractive power, and the seventh lens and the eighth lens are in contact with each other, the ninth lens and the tenth lens are in contact with each other, and there is a certain gap between the eighth lens and the ninth lens; the third lens group converges a certain proportion of the transmitted light in the light of the first transmissive-reflective lens in the camera device.

[0021] The second transmissive-reflective lens reflects a certain proportion of the reflected light in the light of the first transmissive-reflective lens into the fourth lens group according to a certain proportion, and then the fourth lens group emits substantially parallel light into the prism group.

[0022] The fourth lens group sequentially includes an eleventh lens with negative refractive power, a twelfth lens with positive refractive power, a thirteenth lens with negative refractive power, and a fourteenth lens with positive refractive power from the second transmissive-reflective lens towards the lens group; and the eleventh lens and the twelfth lens are in contact with each other, the thirteenth lens and the fourteenth lens are in contact with each other, and there is a certain gap between the twelfth lens and the thirteenth lens.

[0023] The screen display device emits light passing through the fifth lens group. The light forms substantially parallel light through the fifth lens group and enters the second transmissive-reflective lens. After being transmitted at a certain ratio through the second transmissive-reflective lens, it enters the fourth lens group, and then substantially parallel light is emitted from the fourth lens group and enters the prism group.

[0024] The fifth lens group sequentially includes a fifteenth lens with negative refractive power, a sixteenth lens with positive refractive power, a seventeenth lens with positive refractive power, and an eighteenth lens with negative refractive power from the second transmissive-reflective lens towards the screen display device; and the fifteenth lens and the sixteenth lens are in contact with each other, the seventeenth lens and the eighteenth lens are in contact with each other, and there is a certain gap between the sixteenth lens and the seventeenth lens.

[0025] Furthermore, among the first lens group, the second lens group, the third lens group, the fourth lens group, and the fifth lens group, the following conditions also need to be satisfied:

[0026] 0.3 < |f4 / f1| < 2.3;

[0027] 1.1 < |f4 / f2| < 3.1;

[0028] 0.5 < |f1 / f2| < 2.5;

[0029] 0.8 < |f1 / f3| < 2.8;

[0030] 0.2 < |f2 / f3| < 2.2;

[0031] 0.1 < |f5 / f4| < 2.0;

[0032] Wherein, f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal length of the third lens group, f4 is the focal length of the fourth lens group, and f5 is the focal length of the fifth lens group.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. The present invention adopts a large field of view augmented reality module including a first lens group, a deflecting mirror, a second lens group, a first transmissive-reflective lens, a second transmissive-reflective lens, a fourth lens group and a prism group sequentially arranged in the optical path from the objective lens to the eyepiece; and the large field of view augmented reality module further includes a third lens group and a camera device for collecting images, as well as a screen display device and a fifth lens group for projecting images; the second lens group and the third lens group are respectively located at the front and rear ends of the optical path transmission path of the first transmissive-reflective lens, and the camera device is located outside the third lens group relative to the first transmissive-reflective lens; the fifth lens group and the fourth lens group are respectively located at the front and rear ends of the optical path transmission path of the second transmissive-reflective lens, and the screen display device is located outside the fifth lens group relative to the second transmissive-reflective lens. The present invention can use a large field of view eyepiece to observe a microscope, and observe the information processed by artificial intelligence displayed in the human eye, so as to solve the problem of the small field of view of the augmented reality microscope optical system, reduce the work intensity of operators and improve the imaging quality in batch observation. And by setting the first lens group, the second lens group, the third lens group, the fourth lens group and the fifth lens group, the microscope system has good optical performance.

[0035] 2. In the large field of view augmented reality microscope of the present invention, the following conditions also need to be satisfied:

[0036] 6 < |f71 / W| < 9;

[0037] 1.1 < |f71 / f1| < 3.1;

[0038] 2.2 < |f71 / f2| < 4.2;

[0039] 2.7 < |f71 / f3| < 4.7;

[0040] 0.5 < |f71 / f4| < 2.5;

[0041] 0.5 < |f71 / f5| < 2.5;

[0042] Among them, f71 is the combined focal length of the first lens group, the deflecting mirror, the second lens group, the first transmissive-reflective lens, the second transmissive-reflective lens, and the fourth lens group; W is the eyepiece field of view size; f1 is the focal length of the first lens group; f2 is the focal length of the second lens group; f3 is the focal length of the third lens group; f4 is the focal length of the fourth lens group; f5 is the focal length of the fifth lens group. Through the limitation of the combined focal length of the first lens group, the deflecting mirror, the second lens group, the first transmissive-reflective lens, the second transmissive-reflective lens, and the fourth lens group, the field curvature, distortion, and aberration sensitivity of the microscope system are further improved, thereby ensuring the optical performance of the microscope system, enabling the microscope system to have the characteristic of small chromatic aberration under a large field of view, and thus reducing the work intensity of the operator and improving the imaging quality in batch observations.

[0043] The following further elaborates on the present invention in detail with reference to the accompanying drawings and embodiments; however, a large-field-of-view augmented reality microscope of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0045] Figure 2 is a partial optical path diagram of an embodiment of the present invention;

[0046] Figure 3 is a partial structural diagram of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0047] Embodiment

[0048] Refer to Figure 1 As shown, a large-field-of-view augmented reality microscope of the present invention includes an eyepiece 1, an objective lens 4, and a large-field-of-view augmented reality module 2 disposed between the eyepiece 1 and the objective lens 4; the microscope further includes: an intermediate body 3 (optional), a condenser 5, a collector lens 6, a microscope frame 7, a downlighting lamp box 8 (optional), a throughlighting lamp box 9, an information processing device 10, a display 11, and other components. Among them, the eyepiece 1 and the objective lens 4 are installed at corresponding mating positions in the microscope frame 7; the intermediate body 3 (optional) is installed in the middle between the objective lens 4 and the large-field-of-view augmented reality module 2; the condenser 5 and the collector lens 6 are respectively installed below the objective lens 4; the downlighting lamp box 8 (optional) and the throughlighting lamp box 9 are installed beside the microscope frame 7; the information processing device 10 and the display 11 are respectively disposed beside the microscope frame 7; the information processing device 10 is communicatively connected to the large-field-of-view augmented reality module 2, and the information processing device 10 is further connected to the display 11.

[0049] Refer to Figure 2As shown, the large field of view augmented reality module 2 includes a first lens group 81, a deflecting mirror 104, a second lens group 82, a first transmissive-reflective lens 204, a second transmissive-reflective lens 205, a fourth lens group 84, and a prism group 601 that are sequentially arranged in the optical path from the objective lens 4 to the eyepiece 1; the large field of view augmented reality module 2 further includes a third lens group 83 and a camera device 305 for collecting images, and a screen display device 505 and a fifth lens group 85 for projecting images; the second lens group 82 and the third lens group 83 are respectively located at the front and rear ends of the light path transmission path of the first transmissive-reflective lens 204, and the camera device 305 is located outside the third lens group 83 relative to the first transmissive-reflective lens 204; the fifth lens group 85 and the fourth lens group 84 are respectively located at the front and rear ends of the light path transmission path of the second transmissive-reflective lens 205, and the screen display device 505 is located outside the fifth lens group 85 relative to the second transmissive-reflective lens 205.

[0050] Further, in the large field of view augmented reality microscope, the following conditions also need to be satisfied:

[0051] 6 < |f71 / W| < 9;

[0052] 1.1 < |f71 / f1| < 3.1;

[0053] 2.2 < |f71 / f2| < 4.2;

[0054] 2.7 < |f71 / f3| < 4.7;

[0055] 0.5 < |f71 / f4| < 2.5;

[0056] 0.5 < |f71 / f5| < 2.5;

[0057] Among them, f71 is the combined focal length of the first lens group 81, the deflecting mirror 104, the second lens group 82, the first transmissive-reflective lens 204, the second transmissive-reflective lens 205, and the fourth lens group 84, W is the field of view size of the eyepiece 1, f1 is the focal length of the first lens group 81, f2 is the focal length of the second lens group 82, f3 is the focal length of the third lens group 83, f4 is the focal length of the fourth lens group 84, and f5 is the focal length of the fifth lens group 85.

[0058] In this embodiment, the first lens group 81 is disposed between the objective lens 4 and the deflecting mirror 104, and the second lens group 82 is disposed at a corresponding position of the deflecting mirror 104 such that the light passing through the first lens group 81 from the objective lens 4 rotates 90° after passing through the deflecting mirror 104 and enters the second lens group 82; the first transmissive-reflective lens 204 and the second transmissive-reflective lens 205 are disposed at positions that cooperate with each other, and the light passing through the second lens group 82 rotates 180° after passing through the first transmissive-reflective lens 204 and the second transmissive-reflective lens 205 and enters the fourth lens group 84.

[0059] In this embodiment, the first lens group 81 sequentially includes a first lens 101 with positive refractive power, a second lens 102 with positive refractive power, and a third lens 103 with negative refractive power from the objective lens 4 towards the deflecting mirror 104, and the first lens 101, the second lens 102, and the third lens 103 are in contact with each other; the first lens group 81 converges the light from the objective lens 4, which is approximately parallel light, near the deflecting mirror 104. The light convergence position can be between the deflecting mirror 104 and the first lens group 81, or between the deflecting mirror 104 and the second lens group 82.

[0060] In this embodiment, the second lens group 82 sequentially includes a fourth lens 201 with negative refractive power, a fifth lens 202 with positive refractive power, and a sixth lens 203 with positive refractive power from the deflecting mirror 104 towards the first transmissive-reflective lens 204, and the fourth lens 201, the fifth lens 202, and the sixth lens 203 are in contact with each other; the second lens group 82 allows the light emitted from the deflecting mirror 104 to enter the first transmissive-reflective lens 204, and the first transmissive-reflective lens 204 allows a certain proportion (the proportion can be set according to corresponding requirements) of the transmitted light in the light to enter the third lens group 83 and allows a certain proportion (the proportion can be set according to corresponding requirements) of the reflected light in the light to enter the second transmissive-reflective lens 205.

[0061] In this embodiment, the third lens group 83 includes, in order from the first transmissive mirror 204 toward the camera device 305, a seventh lens 301 with positive refractive power, an eighth lens 302 with negative refractive power, a ninth lens 303 with negative refractive power, and a tenth lens 304 with positive refractive power. The seventh lens 301 and the eighth lens 302 are in contact with each other, and the ninth lens 303 and the tenth lens 304 are in contact with each other. There is a certain gap between the eighth lens 302 and the ninth lens 303 (the gap can be set according to corresponding needs). The third lens group 83 converges a certain proportion of the transmitted light in the light of the first transmissive mirror 204 into the camera device 305. The camera device 305 is connected to the information processing device 10, and the information processing device 10 analyzes and processes the images acquired by the camera device 305.

[0062] In this embodiment, the second transmissive mirror 205 reflects a certain proportion of the reflected light in the light of the first transmissive mirror 204 into the fourth lens group 84 at a certain proportion, and then the fourth lens group 84 emits substantially parallel light into the prism group 601.

[0063] In this embodiment, the fourth lens group 84 includes, in order from the second transmissive mirror 205 toward the lens group 601, an eleventh lens 401 with negative refractive power, a twelfth lens 402 with positive refractive power, a thirteenth lens 403 with negative refractive power, and a fourteenth lens 404 with positive refractive power. The eleventh lens 401 and the twelfth lens 402 are in contact with each other, the thirteenth lens 403 and the fourteenth lens 404 are in contact with each other, and there is a certain gap between the twelfth lens 402 and the thirteenth lens 403 (the gap can be set according to corresponding needs).

[0064] In this embodiment, the light emitted by the screen display device 505 passes through the fifth lens group 85. The light forms substantially parallel light through the fifth lens group 85 and enters the second transmissive mirror 205. After being transmitted at a certain proportion through the second transmissive mirror 205, it enters the fourth lens group 84, and then the fourth lens group 84 emits substantially parallel light into the prism group 601. The screen display device 505 is connected to the information processing device 10, and the information processing device 10 sends the analyzed and processed image information to the screen display device 505 for display.

[0065] In this embodiment, the fifth lens group 85 includes, in order from the second transmissive and reflective lens 205 towards the screen display device 505, a fifteenth lens 501 with negative refractive power, a sixteenth lens 502 with positive refractive power, a seventeenth lens 503 with positive refractive power, and an eighteenth lens 504 with negative refractive power; and the fifteenth lens 501 and the sixteenth lens 502 are in contact with each other, the seventeenth lens 503 and the eighteenth lens 504 are in contact with each other, and there is a certain gap between the sixteenth lens 502 and the seventeenth lens 503 (the gap can be set according to corresponding requirements).

[0066] Further, in the first lens group 81, the second lens group 82, the third lens group 83, the fourth lens group 84, and the fifth lens group 85, the following conditions also need to be satisfied:

[0067] 0.3 < |f4 / f1| < 2.3;

[0068] 1.1 < |f4 / f2| < 3.1;

[0069] 0.5 < |f1 / f2| < 2.5;

[0070] 0.8 < |f1 / f3| < 2.8;

[0071] 0.2 < |f2 / f3| < 2.2;

[0072] 0.1 < |f5 / f4| < 2.0;

[0073] Wherein, f1 is the focal length of the first lens group 81, f2 is the focal length of the second lens group 82, f3 is the focal length of the third lens group 83, f4 is the focal length of the fourth lens group 84, and f5 is the focal length of the fifth lens group 85.

[0074] A large field of view augmented reality microscope according to the present invention, for the light vertically upward through the objective lens 4, after passing through the first lens group 81, it is turned into a horizontal rightward direction by the deflecting mirror 104; after the light passes through the second lens group 82, it then passes through the first transmissive reflection lens 204, allowing a certain proportion of the light to pass horizontally to the right through the first transmissive reflection lens 204, and a certain proportion of the light is reflected vertically upward to the second transmissive reflection lens 205, and is turned into a horizontal leftward direction by the second transmissive reflection lens 205; the light passing through the first transmissive reflection lens 204 converges to the camera device 305 after passing through the third lens group 83, the camera device 305 collects the image signal and sends it to the information processing device 10, and the information processing device 10 analyzes and processes the image obtained by the camera device 305; the image processed by the information processing device 10 is sent to the screen display device 505 for display, the light of the screen display device 505 passes through the fifth lens group 85, and then passes through the second transmissive reflection lens 205 to be superimposed on the light reflected by the first transmissive reflection lens 204, and the superimposed light passes through the fourth lens group 84, and then is converted into an angle adapted to the eyepiece 1 through the prism group 601.

[0075] See Figure 3 As shown, in the microscope frame 7, there are also respectively provided a first lens group seat 51, a deflecting mirror bracket 52, a second lens group seat 53, a transmissive reflection lens seat 54, a third lens group seat 55, a camera bracket 56, a display device bracket 57, a fourth lens group seat 58, a fifth lens group seat 59 and a prism seat 60 that are corresponding and adapted in position; the first lens group 81 is installed on the first lens group seat 51, the deflecting mirror 104 is installed on the deflecting mirror bracket 52, the second lens group 82 is installed on the second lens group seat 53, the first transmissive reflection lens 204 and the second transmissive reflection lens 205 are installed on the transmissive reflection lens seat 54, the third lens group 83 is installed on the third lens group seat 55, the camera device 305 is installed on the camera bracket 56, the fourth lens group 84 is installed on the fourth lens group seat 58, the prism group 601 is installed on the prism seat 60, the screen display device 505 is installed on the display device bracket 57, and the fifth lens group 85 is installed on the fifth lens group seat 59.

[0076] A large field of view augmented reality microscope of the present invention employs a large field of view augmented reality module 2 disposed between an eyepiece 1 and an objective lens 4. The large field of view augmented reality module 2 includes a first lens group 81, a deflecting mirror 104, a second lens group 82, a first transmissive-reflective lens 204, a second transmissive-reflective lens 205, a fourth lens group 84, and a prism group 601 sequentially arranged in the optical path from the objective lens 4 to the eyepiece 1; and the large field of view augmented reality module further includes a third lens group 83 and a camera device 305 for collecting images, as well as a screen display device 505 and a fifth lens group 85 for projecting images; the second lens group 82 and the third lens group 83 are respectively located at the front and rear ends of the light path transmission path of the first transmissive-reflective lens 204, and the camera device 305 is located outside the third lens group 83 with respect to the first transmissive-reflective lens 204; the fifth lens group 85 and the fourth lens group 84 are respectively located at the front and rear ends of the light path transmission path of the second transmissive-reflective lens 205, and the screen display device 505 is located outside the fifth lens group 85 with respect to the second transmissive-reflective lens 205. The present invention can use a large field of view eyepiece to observe the microscope, and the information processed by artificial intelligence can be observed and displayed in the human eye, so as to solve the problem of the small field of view of the augmented reality microscope optical system, reduce the work intensity of operators and improve the imaging quality in batch observations. And by setting the first lens group 81, the second lens group 82, the third lens group 83, the fourth lens group 84, and the fifth lens group 85, the microscope system has good optical performance.

[0077] A large field of view augmented reality microscope of the present invention. In the large field of view augmented reality microscope, the following conditions also need to be satisfied:

[0078] 6 < |f71 / W| < 9;

[0079] 1.1 < |f71 / f1| < 3.1;

[0080] 2.2 < |f71 / f2| < 4.2;

[0081] 2.7 < |f71 / f3| < 4.7;

[0082] 0.5 < |f71 / f4| < 2.5;

[0083] 0.5 < |f71 / f5| < 2.5;

[0084] Among them, f71 is the combined focal length of the first lens group 81, the deflecting mirror 104, the second lens group 82, the first transmissive-reflective lens 204, the second transmissive-reflective lens 205, and the fourth lens group 84. W is the eyepiece field of view size, f1 is the focal length of the first lens group 81, f2 is the focal length of the second lens group 82, f3 is the focal length of the third lens group 83, f4 is the focal length of the fourth lens group 84, and f5 is the focal length of the fifth lens group 85. Through the limitation of the combined focal length of the first lens group 81, the deflecting mirror 104, the second lens group 82, the first transmissive-reflective lens 204, the second transmissive-reflective lens 205, and the fourth lens group 84, the present invention further improves the field curvature, distortion, and aberration sensitivity of the microscope system, thereby ensuring the optical performance of the microscope system, making the microscope system have the characteristic of small chromatic aberration under a large field of view, and thus reducing the work intensity of the operator and improving the imaging quality in batch observations.

[0085] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent equivalent embodiment, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A large field of view augmented reality microscope, comprising an eyepiece, an objective lens, and a large field of view augmented reality module disposed between the eyepiece and the objective lens; Characterized in that: The large field of view augmented reality module includes a first lens group, a deflecting mirror, a second lens group, a first transmissive-reflective lens, a second transmissive-reflective lens, a fourth lens group, and a prism group sequentially arranged in the optical path from the objective lens to the eyepiece; the large field of view augmented reality module further includes a third lens group and a camera device for collecting images, and a screen display device and a fifth lens group for projecting images; the second lens group and the third lens group are respectively located at the front and rear ends of the light path transmission path of the first transmissive-reflective lens, and the camera device is located outside the third lens group with respect to the first transmissive-reflective lens; the fifth lens group and the fourth lens group are respectively located at the front and rear ends of the light path transmission path of the second transmissive-reflective lens, and the screen display device is located outside the fifth lens group with respect to the second transmissive-reflective lens; The first lens group is disposed between the objective lens and the deflecting mirror, and the second lens group is disposed at a corresponding position of the deflecting mirror such that the light passing through the first lens group of the objective lens is rotated 90° after passing through the deflecting mirror and enters the second lens group; the first transmissive-reflective lens and the second transmissive-reflective lens are disposed at positions that cooperate with each other, and the light passing through the second lens group passes through the first transmissive-reflective lens and the second transmissive-reflective lens and then is rotated 180° and enters the fourth lens group; Further, in the large field of view augmented reality microscope, the following conditions also need to be satisfied: 6 < |f71 / W| < 9; 1.1 < |f71 / f1| < 3.1; 2.2 < |f71 / f2| < 4.2; 2.7 < |f71 / f3| < 4.7; 0.5 < |f71 / f4| < 2.5; 0.5 < |f71 / f5| < 2.5; Wherein, f71 is the combined focal length of the first lens group, the deflecting mirror, the second lens group, the first transmissive-reflective lens, the second transmissive-reflective lens, and the fourth lens group, W is the eyepiece field of view size, f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal length of the third lens group, f4 is the focal length of the fourth lens group, and f5 is the focal length of the fifth lens group.

2. The large field of view augmented reality microscope according to claim 1, Characterized in that: The first lens group sequentially includes a first lens with a positive diopter, a second lens with a positive diopter, and a third lens with a negative diopter from the objective lens to the deflecting mirror direction, and the first lens, the second lens, and the third lens are in contact with each other; the first lens group converges the light from the objective lens that is approximately parallel light entering the first lens group near the deflecting mirror, and the light convergence position is between the deflecting mirror and the first lens group or between the deflecting mirror and the second lens group.

3. The large field of view augmented reality microscope according to claim 1, Characterized in that: The second lens group, in the direction from the deflecting mirror towards the first transmissive-reflective lens, sequentially includes a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with positive refractive power, and the fourth lens, the fifth lens, and the sixth lens are in contact with each other; the second lens group allows the light emitted from the deflecting mirror to enter the first transmissive-reflective lens, and the first transmissive-reflective lens allows a certain proportion of the transmitted light in the light to enter the third lens group and a certain proportion of the reflected light in the light to enter the second transmissive-reflective lens.

4. The large field of view augmented reality microscope according to claim 3, wherein: The third lens group, in the direction from the first transmissive-reflective lens towards the camera device, sequentially includes a seventh lens with positive refractive power, an eighth lens with negative refractive power, a ninth lens with negative refractive power, and a tenth lens with positive refractive power, and the seventh lens and the eighth lens are in contact with each other, the ninth lens and the tenth lens are in contact with each other, and there is a certain gap between the eighth lens and the ninth lens; the third lens group converges a certain proportion of the transmitted light from the first transmissive-reflective lens in the camera device.

5. The large field of view augmented reality microscope according to claim 3, wherein: The second transmissive-reflective lens reflects a certain proportion of the reflected light from the first transmissive-reflective lens into the fourth lens group according to a certain proportion, and then the fourth lens group emits substantially parallel light into the prism group; the fourth lens group, in the direction from the second transmissive-reflective lens towards the prism group, sequentially includes an eleventh lens with negative refractive power, a twelfth lens with positive refractive power, a thirteenth lens with negative refractive power, and a fourteenth lens with positive refractive power; and the eleventh lens and the twelfth lens are in contact with each other, the thirteenth lens and the fourteenth lens are in contact with each other, and there is a certain gap between the twelfth lens and the thirteenth lens.

6. The large field of view augmented reality microscope according to claim 5, wherein: The screen display device emits light passing through the fifth lens group, and the light forms substantially parallel light through the fifth lens group and enters the second transmissive-reflective lens, and after being transmitted according to a certain proportion through the second transmissive-reflective lens, it enters the fourth lens group, and then the fourth lens group emits substantially parallel light into the prism group.

7. The large field of view augmented reality microscope according to claim 6, wherein: The fifth lens group, in the direction from the second transmissive-reflective lens towards the screen display device, sequentially includes a fifteenth lens with negative refractive power, a sixteenth lens with positive refractive power, a seventeenth lens with positive refractive power, and an eighteenth lens with negative refractive power; and the fifteenth lens and the sixteenth lens are in contact with each other, the seventeenth lens and the eighteenth lens are in contact with each other, and there is a certain gap between the sixteenth lens and the seventeenth lens.

8. The large field of view augmented reality microscope according to claim 1, wherein: Further, among the first lens group, the second lens group, the third lens group, the fourth lens group and the fifth lens group, the following conditions also need to be satisfied: 0.3 < |f4 / f1| < 2.3; 1.1 < |f4 / f2| < 3.1; 0.5 < |f1 / f2| < 2.5; 0.8 < |f1 / f3| < 2.8; 0.2 < |f2 / f3| < 2.2; 0.1 < |f5 / f4| < 2.0; where f1 is the focal length of the first lens group, f2 is the focal length of the second lens group, f3 is the focal length of the third lens group, f4 is the focal length of the fourth lens group, and f5 is the focal length of the fifth lens group.

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