Background
With the recent rapid development of microscopy, the microscope has been widely used in various fields such as biology, medical treatment, electronics, semiconductors, optical manufacturing, etc., and various forms, structures and imaging modes have been developed, which play an important role in different applications. However, currently, microscopes are also used for manual operations, especially for field inspection and judgment, such as pathological analysis in the medical field, and the main task is to observe a target object through a microscope. Currently, many microscopes have an image acquisition system in which microscopic images are received by an electronic imaging device and displayed and viewed on a display screen, which can alleviate fatigue caused by manual observation, however, the images observed on the screen are perceptively different from the images directly observed through the microscope. Therefore, in applications like pathology analysis, operators tend to observe directly, and accuracy of observation results is guaranteed, so that when the number of samples to be analyzed is excessive, working strength and fatigue strength of the operators are greatly increased, and thus observation of analysis results is affected.
With the development of image processing, pattern recognition and artificial intelligence technology, the acquired microscopic image can be processed, and the key target is automatically detected, and because the automatic detection result cannot be used as a final result, manual verification is often required. The observation field is small, fatigue of an observer is easily caused, and the problem of how to lighten the working strength and the quality of operators in mass observation is solved.
Patent document CN 109031643a discloses an augmented reality microscope placed in the microscope in an intermediate split configuration. The intermediate split structure, although convenient to disassemble, has the disadvantage of not supporting a large field eyepiece due to the fact that the head optical system is lifted, and has certain limitations.
Patent document CN 110488479a discloses an augmented reality microscope, an image projection apparatus, and an image processing system, which are placed in the microscope in an intermediate split structure. The intermediate split structure, although convenient to disassemble, has the disadvantage of not supporting a large field eyepiece due to the fact that the head optical system is lifted, and has certain limitations.
Patent document CN 112346233a discloses an augmented reality module for a microscope, which adopts an intermediate separation type structure, although convenient to disassemble, has the disadvantage that a head optical system is lifted, so that a large-view eyepiece cannot be supported, and has certain limitations.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a large-view-field augmented reality microscope, which can be used for observing a microscope by using a large-view-field eyepiece and displaying information obtained after artificial intelligence processing on human eyes so as to solve the problems of reducing the working intensity of operators and improving the imaging quality in batch observation of an optical system of the augmented reality microscope with a small view field.
The technical scheme includes that the large-field augmented reality microscope comprises an ocular, an objective lens and a large-field augmented reality module arranged between the ocular and the objective lens, wherein the large-field augmented reality module comprises a first lens group, a deflection mirror, a second lens group, a first transmission reflection mirror, a second transmission reflection mirror, a fourth lens group and a prism group which are sequentially arranged in an optical path from the objective lens to the ocular, the large-field augmented reality module further comprises a third lens group and a camera device for collecting images, a screen display device and a fifth lens group for projecting images, the second lens group and the third lens group are positioned at the front end and the rear end of an optical path transmission path of the first transmission reflection mirror, the camera device is positioned at the outer side of the third lens group relative to the first transmission reflection mirror, the fifth lens group and the fourth lens group are positioned at the front end and the rear end of the optical path transmission path of the second transmission reflection mirror, and the screen display device is positioned at the outer side of the fifth lens group relative to the second transmission mirror.
Further, in the large-field-of-view augmented reality microscope, the following conditions are also required 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 a combined focal length of the first lens group, the deflection mirror, the second lens group, the first transmission mirror, the second transmission mirror, and the fourth lens group, W is an eyepiece field size, f1 is a focal length of the first lens group, f2 is a focal length of the second lens group, f3 is a focal length of the third lens group, f4 is a focal length of the fourth lens group, and f5 is a focal length of the fifth lens group.
The first lens group is arranged between the objective lens and the deflection reflecting mirror, the second lens group is arranged at a corresponding position of the deflection reflecting mirror, so that light rays transmitted by the objective lens through the first lens group pass through the deflection reflecting mirror and then rotate 90 degrees to enter the second lens group, the first transmission reflecting mirror plate and the second transmission reflecting mirror plate are arranged at mutually matched positions, and the light rays transmitted by the second lens group pass through the first transmission reflecting mirror plate and the second transmission reflecting mirror plate and then rotate 180 degrees to enter the fourth lens group.
The first lens group comprises a first lens with positive diopter, a second lens with positive diopter and a third lens with negative diopter in sequence from the objective lens to the deflection mirror, the first lens group is close to the first lens group, light entering the first lens group from the approximately parallel light of the objective lens is converged near the deflection mirror, and the converging position of the light is between the deflection mirror and the first lens group or between the deflection mirror and the second lens group.
The second lens group comprises a fourth lens with negative refractive power, a fifth lens with positive refractive power and a sixth lens with positive refractive power in sequence from the deflection mirror to the first transmission reflection lens, and the fourth lens, the fifth lens and the sixth lens are close together; the second lens group enables light rays emitted by the deflection reflecting mirror to enter the first transmission reflecting mirror, a certain proportion of transmitted light rays in the light rays enter the third lens group through the first transmission reflecting mirror, and a certain proportion of reflected light rays in the light rays enter the second transmission reflecting mirror.
The third lens group comprises a seventh lens with positive diopter, an eighth lens with negative diopter, a ninth lens with negative diopter and a tenth lens with positive diopter in sequence from the first transmission reflection lens to the camera device, the seventh lens and the eighth lens are close together, the ninth lens and the tenth lens are close together, a certain gap is formed between the eighth lens and the ninth lens, and the third lens group converges a certain proportion of transmission light rays in the light rays of the first transmission reflection lens in the camera device.
The second transparent reflection lens reflects a certain proportion of reflected light rays in the light rays transmitted through the reflection lens by the first transparent reflection lens into the fourth lens group according to a certain proportion, and then the approximately parallel light emitted by the fourth lens group enters the prism group.
The fourth lens group comprises 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 in sequence from the second transreflective lens to the lens group, the eleventh lens and the twelfth lens are close together, the thirteenth lens and the fourteenth lens are close together, and a certain gap is formed between the twelfth lens and the thirteenth lens.
The screen display device transmits light rays through the fifth lens group, the light rays pass through the fifth lens group to form approximately parallel light rays which enter the second transmission reflection lens, the light rays pass through the second transmission reflection lens to be transmitted according to a certain proportion and then enter the fourth lens group, and the approximately parallel light rays emitted by the fourth lens group enter the prism group.
The fifth lens group comprises 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 transreflective lens to the direction group of the screen display device in sequence, the fifteenth lens and the sixteenth lens are close together, the seventeenth lens and the eighteenth lens are close together, and a certain gap is reserved between the sixteenth lens and the seventeenth lens.
Further, the first lens group, the second lens group, the third lens group, the fourth lens group and the fifth lens group further satisfy the following conditions:
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 a focal length of the first lens group, f2 is a focal length of the second lens group, f3 is a focal length of the third lens group, f4 is a focal length of the fourth lens group, and f5 is a focal length of the fifth lens group.
Compared with the prior art, the invention has the beneficial effects that:
1. The large-view-field augmented reality module comprises a first lens group, a deflection mirror, a second lens group, a first transmission reflection lens, a second transmission reflection lens, a fourth lens group and a prism group which are sequentially arranged in the optical path from the objective lens to the eyepiece lens, and further comprises a third lens group and a camera device which are used for collecting images, a screen display device and a fifth lens group which are used for projecting images, wherein the second lens group and the third lens group are respectively arranged at the front end and the rear end of the optical path transmission path of the first transmission reflection lens, the camera device is arranged at the outer side of the third lens group relative to the first transmission reflection lens, the fifth lens group and the fourth lens group are respectively arranged at the front end and the rear end of the optical path transmission path of the second transmission reflection lens, and the screen display device is arranged at the outer side of the fifth lens group relative to the second transmission reflection lens. The invention can use a large-view-field eyepiece to observe the microscope, and the observed information from artificial intelligence processing is displayed on human eyes, so as to solve the problems of reducing the working intensity of operators and improving the imaging quality in batch observation of an augmented reality microscope optical system with a small view field. And by arranging 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.
2. The invention also needs to meet the following conditions due to the adoption of the large-view-field augmented reality microscope:
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 a combined focal length of the first lens group, the deflection mirror, the second lens group, the first transmission mirror, the second transmission mirror, and the fourth lens group, W is an eyepiece field size, f1 is a focal length of the first lens group, f2 is a focal length of the second lens group, f3 is a focal length of the third lens group, f4 is a focal length of the fourth lens group, and f5 is a focal length of the fifth lens group. The invention further improves the field curvature, distortion and aberration sensitivity of the microscope system by limiting the combined focal distance of the first lens group, the deflection reflecting mirror, the second lens group, the first transmitting reflecting mirror, the second transmitting reflecting mirror and the fourth lens group, thereby ensuring the optical performance of the microscope system, ensuring that the microscope system has the characteristic of small chromatic aberration under a large visual field, and reducing the working intensity of operators and improving the imaging quality in batch observation.
The present invention will be described in further detail with reference to the accompanying drawings and examples, but the large-field-of-view augmented reality microscope of the present invention is not limited to the examples.
Detailed Description
Examples
Referring to FIG. 1, the large-field augmented reality microscope comprises an eyepiece 1, an objective 4, a large-field augmented reality module 2 arranged between the eyepiece 1 and the objective 4, an intermediate body 3 (optional), a condenser 5, a condenser 6, a microscope stand 7, an epi-light box 8 (optional), a transmission light box 9, an information processing device 10, a display 11 and other components, wherein the eyepiece 1 and the objective 4 are arranged at corresponding matched positions in the microscope stand 7, the intermediate body 3 (optional) is arranged between the objective 4 and the large-field augmented reality module 2, the condenser 5 and the condenser 6 are respectively arranged below the objective 4, the epi-light box 8 (optional) and the transmission light box 9 are arranged beside the microscope stand 7, the information processing device 10 and the display 11 are respectively arranged beside the microscope stand 7, the information processing device 10 is in communication connection with the large-field augmented reality module 2, and the information processing device 10 is also connected with the display 11.
Referring to fig. 2, the large-field augmented reality module 2 includes a first lens group 81, a deflection mirror 104, a second lens group 82, a first transmissive mirror 204, a second transmissive mirror 205, a fourth lens group 84, and a prism group 601 which are sequentially disposed in the optical path from the objective lens 4 to the eyepiece lens 1, the large-field augmented reality module 2 further includes a third lens group 83 and a camera device 305 for capturing 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 being located at front and rear ends of the optical path transmission path of the first transmissive mirror 204, the camera device 305 being located outside the third lens group 83 with respect to the first transmissive mirror 204, the fifth lens group 85 and the fourth lens group 84 being located at front and rear ends of the optical path transmission path of the second transmissive mirror 205, the screen display device 505 being located outside the fifth lens group 85 with respect to the second transmissive mirror 205.
Further, in the large-field-of-view augmented reality microscope, the following conditions are also required 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;
Where f71 is a combined focal length of the first lens group 81, the deflection mirror 104, the second lens group 82, the first transmissive mirror 204, the second transmissive mirror 205, and the fourth lens group 84, W is a field size of the eyepiece 1, f1 is a focal length of the first lens group 81, f2 is a focal length of the second lens group 82, f3 is a focal length of the third lens group 83, f4 is a focal length of the fourth lens group 84, and f5 is a focal length of the fifth lens group 85.
In this embodiment, the first lens group 81 is disposed between the objective lens 4 and the deflector mirror 104, the second lens group 82 is disposed at a corresponding position of the deflector mirror 104, so that the light transmitted by the objective lens 4 through the first lens group 81 passes through the deflector mirror 104 and then rotates 90 ° to enter the second lens group 82, and the first transmissive mirror 204 and the second transmissive mirror 205 are disposed at mutually matched positions, so that the light transmitted by the second lens group 82 passes through the first transmissive mirror 204 and the second transmissive mirror 205 and then rotates 180 ° to enter the fourth lens group 84.
In this embodiment, the first lens group 81 includes, in order from the objective lens 4 toward the deflection mirror 104, a first lens 101 having a positive refractive power, a second lens 102 having a positive refractive power, and a third lens 103 having a negative refractive power, and the first lens 101, the second lens 102, and the third lens 103 are close together, and the first lens group 81 converges the light entering the first lens group 81 from the substantially parallel light of the objective lens 4 in the vicinity of the deflection mirror 104, and the converging position of the light may be between the deflection mirror 104 and the first lens group 81, or may be between the deflection mirror 104 and the second lens group 82.
In this embodiment, the second lens group 82 includes, in order from the deflecting mirror 104 toward the first transmissive mirror 204, a fourth lens 201 having negative refractive power, a fifth lens 202 having positive refractive power, and a sixth lens 203 having positive refractive power, where the fourth lens 201, the fifth lens 202, and the sixth lens 203 are close together, the second lens group 82 allows the light emitted from the deflecting mirror 104 to enter the first transmissive mirror 204, and allows a certain proportion (the proportion can be set according to the corresponding requirement) of the transmitted light in the light to enter the third lens group 83 and a certain proportion (the proportion can be set according to the corresponding requirement) of the reflected light in the light to enter the second transmissive mirror 205.
In this embodiment, the third lens group 83 sequentially includes a seventh lens 301 having positive refractive power, an eighth lens 302 having negative refractive power, a ninth lens 303 having negative refractive power, and a tenth lens 304 having positive refractive power from the first transparent mirror 204 to the camera device 305, the seventh lens 301 and the eighth lens 302 are close together, the ninth lens 303 and the tenth lens 304 are close together, a certain gap (the gap can be set correspondingly according to the corresponding requirement) is provided between the eighth lens 302 and the ninth lens 303, and the third lens group 83 converges a certain proportion of the transmitted light rays of the first transparent mirror 204 in 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 an image acquired by the camera device 305.
In this embodiment, the second transflector 205 reflects a certain proportion of the reflected light beams from the first transflector 204 into the fourth lens group 84, and then the substantially parallel light beams from the fourth lens group 84 enter the prism group 601.
In this embodiment, the fourth lens group 84 includes, in order from the second transflector 205 toward the lens group 601, an eleventh lens 401 having negative refractive power, a twelfth lens 402 having positive refractive power, a thirteenth lens 403 having negative refractive power, and a fourteenth lens 404 having positive refractive power, where the eleventh lens 401 and the twelfth lens 402 are close together, the thirteenth lens 403 and the fourteenth lens 404 are close together, and a certain gap is provided between the twelfth lens 402 and the thirteenth lens 403 (the gap may be set correspondingly according to the corresponding requirement).
In this embodiment, the screen display device 505 emits light through the fifth lens group 85, the light passes through the fifth lens group 85 to form substantially parallel light, the light enters the second transmissive/reflective lens 205, the light passes through the second transmissive/reflective lens 205 to be transmitted in a certain proportion, and then enters the fourth lens group 84, and the light is emitted from the fourth lens group 84 to enter the prism group 601. The screen display device 505 is connected to the information processing device 10, and the information processing device 10 transmits the analyzed and processed image information to the screen display device 505 to display.
In this embodiment, the fifth lens group 85 sequentially includes, from the second transmissive/reflective lens 205 to the direction group of the screen display device 505, a fifteenth lens 501 having negative refractive power, a sixteenth lens 502 having positive refractive power, a seventeenth lens 503 having positive refractive power, and an eighteenth lens 504 having negative refractive power, where the fifteenth lens 501 and the sixteenth lens 502 are close together, the seventeenth lens 503 and the eighteenth lens 504 are close together, and a certain gap is provided between the sixteenth lens 502 and the seventeenth lens 503 (the gap may be set correspondingly according to the corresponding requirement).
Further, among 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 are also required 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 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.
The invention relates to a large-view-field augmented reality microscope, which is characterized in that light rays vertically upwards passing through an objective lens 4 are transmitted through a first lens group 81 and then are converted into horizontal right directions through a deflection mirror 104, after passing through a second lens group 82, a certain proportion of light rays horizontally pass through a first transmission reflection lens 204, a certain proportion of light rays vertically upwards reflect to a second transmission reflection lens 205, pass through a second transmission reflection lens 205 and then are converted into horizontal left directions, the light rays passing through the first transmission reflection lens 204 are converged to a camera device 305 after passing through a third lens group 83, an image signal is acquired by the camera device 305 and sent to an information processing device 10, the image acquired by the camera device 305 is analyzed and processed by the information processing device 10, the image processed by the information processing device 10 is sent to a screen display device 505 for display, after passing through a fifth lens group 85, the light rays passing through the second transmission reflection lens 205 and the first transmission reflection lens 204 are overlapped, and then the light rays passing through a fourth lens group 84 are converted into an angle suitable for an eyepiece lens 1.
Referring to fig. 3, the microscope stand 7 is further provided with a first lens group holder 51, a deflection mirror holder 52, a second lens group holder 53, a mirror holder 54, a third lens group holder 55, a camera holder 56, a display device holder 57, a fourth lens group holder 58, a fifth lens group holder 59, and a prism holder 60, which are adapted to each other in position, respectively, a first lens group 81 mounted on the first lens group holder 51, a deflection mirror 104 mounted on the deflection mirror holder 52, a second lens group 82 mounted on the second lens group holder 53, a first through-reflecting mirror 204 and a second through-reflecting mirror 205 mounted on the through-reflecting mirror holder 54, a third lens group 83 mounted on the third lens group holder 55, a camera device 305 mounted on the camera holder 56, a fourth lens group 84 mounted on the fourth lens group holder 58, a prism group 601 mounted on the prism holder 60, a screen display device 505 mounted on the display device holder 57, and a fifth lens group 85 mounted on the fifth lens group holder 59.
A large-field augmented reality microscope of the present invention employs a large-field augmented reality module 2 disposed between an eyepiece 1 and an objective lens 4, the large-field augmented reality module 2 including a first lens group 81, a deflection mirror 104, a second lens group 82, a first transmissive mirror 204, a second transmissive mirror 205, a fourth lens group 84, and a prism group 601 disposed in order in an optical path from the objective lens 4 to the eyepiece 1, and a third lens group 83 and a camera device 305 for capturing 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 being located at front and rear ends of an optical path transmission path of the first transmissive mirror 204, the camera device 305 being located outside the third lens group 83 with respect to the first transmissive mirror 204, the fifth lens group 85 and the fourth lens group 84 being located at front and rear ends of an optical path transmission path of the second transmissive mirror 205, the screen display device 505 being located outside the fifth lens group 85 with respect to the second transmissive mirror 205. The invention can use a large-view-field eyepiece to observe the microscope, and the observed information from artificial intelligence processing is displayed on human eyes, so as to solve the problems of reducing the working intensity of operators and improving the imaging quality in batch observation of an augmented reality microscope optical system with a small view field. And by disposing 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 excellent optical performance.
The invention relates to a large-view-field augmented reality microscope, which is used for meeting the following conditions:
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;
Where f71 is a combined focal length of the first lens group 81, the deflection mirror 104, the second lens group 82, the first transmissive mirror 204, the second transmissive mirror 205, and the fourth lens group 84, W is an eyepiece field size, f1 is a focal length of the first lens group 81, f2 is a focal length of the second lens group 82, f3 is a focal length of the third lens group 83, f4 is a focal length of the fourth lens group 84, and f5 is a focal length of the fifth lens group 85. The invention further improves the field curvature, distortion and aberration sensitivity of the microscope system by limiting the combined focal distances of the first lens group 81, the deflection mirror 104, the second lens group 82, the first transmission reflection mirror 204, the second transmission reflection mirror 205 and the fourth lens group 84, thereby ensuring the optical performance of the microscope system, ensuring the microscope system to have the characteristic of small chromatic aberration under a large field of view, and reducing the working intensity of operators and improving the imaging quality in batch observation.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or be modified to equivalent embodiments, without departing from the scope of the technology. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.