Independent trinocular stereoscopic microscope
By designing an independent trinocular stereomicroscope, the second zoom group enables independent connectivity between the objective lens, eyepiece, and camera channel, solving the imaging instability problem caused by the camera and eyepiece sharing the same optical path. This achieves optical path independence and structural simplicity, improving ease of use and imaging stability.
Patent Information
- Application Number
- CN202422579277.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing trinocular stereomicroscopes use a shared optical path between the camera and the eyepiece, resulting in unstable image quality. Furthermore, the beam splitting device has a complex structure and is difficult to assemble and adjust.
It adopts an independent trinocular stereomicroscope design, which realizes independent connection between the objective lens, eyepiece and camera channel through the second zoom group. It uses three identical optical zoom systems and changes the magnification by rotating the handwheel to avoid mutual interference of the optical path.
It ensures the independence between optical paths, avoids differences in optical signals, has a simple structure, is easy to install and debug, and improves imaging stability and ease of use.
Smart Images
Figure CN223501248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microscope technology, specifically a freestanding trinocular stereomicroscope. Background Technology
[0002] A trinocular stereomicroscope is a stereomicroscope with two eyepiece observation channels and one camera imaging channel.
[0003] Existing trinocular stereomicroscopes typically have camera imaging beam channels designed in two ways: 1. Switching type: one eyepiece is blocked during observation, and the system switches to the camera imaging channel. 2. Fixed type: a beam splitter is installed in the observation light path of the two eyepieces to divert some light to the camera imaging channel, allowing images to be seen simultaneously from three directions.
[0004] like Figure 1 As shown, in this switching device, the objective lens has two optical paths, and the camera channel switches between them using a push-pull lever or knob. In the non-switching state, both eyepieces form images normally, and the camera cannot receive the system beam. In the switched state, the reflecting device switches the light path observed by the eyepieces to the camera. At this time, the camera receives the light and forms an image, and the side of the optical path observed by the eyepieces that was blocked by the switch will not show an image. Because it is impossible to observe all three paths simultaneously, this method is not suitable for some practical applications.
[0005] like Figure 2 As shown, in a fixed beam splitter, the objective lens also has two optical paths. A beam splitter prism is typically used to split one path of light into two before it enters the eyepiece. One path goes to the eyepiece channel, and the other goes to the camera channel. This allows for simultaneous observation by both the binoculars and the display screen. The drawback is that the shared optical path between the camera and the eyepiece affects the imaging quality of both, and the light intensity decreases after the beam passes through the beam splitter.
[0006] Beam splitters typically consist of multiple lenses, making their structure quite complex and their assembly and adjustment challenging.
[0007] Based on this, a stand-alone trinocular stereomicroscope is now provided, with an independent camera channel, which can eliminate the drawbacks of existing devices. Utility Model Content
[0008] The purpose of this invention is to provide an independent trinocular stereo microscope to solve the quality stability problem of the shared optical path between the camera and the eyepiece in the background art.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A stand-alone trinocular stereomicroscope includes an objective lens, an eyepiece, and a camera channel. The objective lens is connected to the eyepiece and the camera channel via a second zoom group to achieve trinocular observation.
[0011] Based on the above technical solutions, this utility model also provides the following optional technical solutions:
[0012] In one alternative embodiment: the second zoom group includes a base, on which a gear seat is fixedly mounted, a gear shaft is rotatably mounted on the inner wall of the gear seat, a second helical gear is fixedly mounted on the gear shaft, a handwheel is fixedly connected to the top of the gear shaft, a zoom straight cylinder is mounted on the base, a zoom curved cylinder is sleeved on the zoom straight cylinder, a first helical gear is fixedly mounted on the bottom surface of the zoom curved cylinder, and the first helical gear meshes with the second helical gear.
[0013] In one alternative: the surface of the variable magnification curve cylinder is provided with six curved grooves.
[0014] In one alternative: the surface of the zoom cylinder has three straight grooves, and the zoom cylinder has three identical optical zoom systems.
[0015] In one alternative: the optical zoom system includes a first lens mount in which a first lens is fixedly mounted.
[0016] In one alternative: the optical zoom system further includes a second lens mount, in which a second lens is fixedly mounted, and a first pin is fixedly provided on the second lens mount. The first pin passes through both the straight groove of the zoom cylinder and the curved groove of the zoom curve cylinder, and the second lens mount is slidably disposed within the cavity of the zoom cylinder.
[0017] In one alternative: the optical zoom system further includes a third lens mount, in which a third lens is fixedly mounted, the third lens mount is slidably disposed within the zoom cylinder cavity, and a second screw is fixedly mounted on the third lens mount, the second screw passing through both the straight groove of the zoom cylinder and the curved groove of the zoom curved cylinder.
[0018] In one alternative: the optical zoom system further includes a fourth lens mount in which a fourth lens is fixedly mounted.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] Three identical optical zoom systems ensure that the optical paths do not interfere with each other and that there are no significant differences in the optical signals. The magnification of the system can be changed by rotating a handwheel, making it easy to use. The invention has a compact overall structure, is easy to install, and features a simpler optical system that is easy to adjust and has good stability. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the optical path of a trinocular stereomicroscope using a switching beam splitter in the background art.
[0022] Figure 2 This is a schematic diagram of the optical path of a trinocular stereomicroscope using a fixed beam splitter in the background art.
[0023] Figure 3 , Figure 4 This is a schematic diagram of the optical path of the present invention.
[0024] Figure 5 This is a schematic diagram of the structure of the second zoom unit of this utility model.
[0025] Figure 6 This is a schematic diagram of the optical zoom system of this utility model.
[0026] Figure 7 This is a schematic diagram of the meshing of the first helical gear and the second helical gear in this utility model.
[0027] Figure reference numerals: 1. Objective lens; 2. First zoom group; 31. Switching device; 32. Fixed beam splitter; 4. Eyepiece; 5. Camera channel; 6. Second zoom group; 7. Base; 8. First helical gear; 9. Zoom curve cylinder; 10. Zoom straight cylinder; 11. Handwheel; 12. Gear seat; 13. Second helical gear; 14. Gear shaft; 15. First lens mount; 16. First lens element; 17. Second lens mount; 18. First pin; 19. Second lens element; 20. Third lens mount; 21. Second pin; 22. Third lens element; 23. Fourth lens mount; 24. Fourth lens element. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0029] In one embodiment, such as Figures 3-6 As shown, an independent trinocular stereomicroscope includes an objective lens 1, an eyepiece 4, and a camera channel 5. The objective lens 1 is connected to the eyepiece 4 and the camera channel 5 through a second zoom group 6 to achieve trinocular observation. The second zoom group 6 ensures that the optical paths do not interfere with each other and that the optical signals do not have significant differences.
[0030] In one embodiment, such as Figure 5As shown, the second zoom group 6 includes a base 7, on which a gear seat 12 is fixedly mounted. A gear shaft 14 is rotatably mounted on the inner wall of the gear seat 12. A second helical gear 13 is fixedly mounted on the gear shaft 14. A handwheel 11 is fixedly connected to the top of the gear shaft 14. A zoom cylinder 10 is mounted on the base 7. A zoom curved cylinder 9 is sleeved on the zoom cylinder 10. A first helical gear 8 is fixedly mounted on the bottom surface of the zoom curved cylinder 9. The second helical gear 13 meshes with the first helical gear 8. Six curved grooves are formed on the surface of the zoom curved cylinder 9. Three straight grooves are formed on the surface of the zoom cylinder 10. The zoom cylinder 10 has three identical optical zoom systems. By rotating the handwheel 11, the gear shaft 14 can be rotated, which in turn rotates the second helical gear 13, which in turn rotates the first helical gear 8, causing the zoom curved cylinder 9 to rotate.
[0031] In one embodiment, such as Figure 6 As shown, the optical zoom system includes a first lens mount 15, a second lens mount 17, a third lens mount 20, and a fourth lens mount 23. A first lens 16 is fixedly installed in the first lens mount 15. A second lens 19 is fixedly installed in the second lens mount 17. A first pin 18 is fixedly installed on the second lens mount 17, passing through both the straight groove of the zoom cylinder 10 and the curved groove of the zoom cylinder 9. The second lens mount 17 slides within the cavity of the zoom cylinder 10. A third lens 22 is fixedly installed in the third lens mount 20, which also slides within the cavity of the zoom cylinder 10. A second pin 21 is fixedly installed on the third lens mount 20, and the second pin 21... The lens passes through the straight groove of the zoom cylinder 10 and the curved groove of the zoom curved cylinder 9. The fourth lens 24 is fixedly installed in the fourth lens mount 23. During the rotation of the zoom curved cylinder 9, the second lens mount 17 and the third lens mount 20 slide in the cavity of the zoom cylinder 10 through the first pin 18 and the second pin 21. During the movement of the second lens mount 17 and the third lens mount 20, the relative positions of the second lens 19 and the third lens 22 change, thereby changing the focal length and changing the magnification and field of view of the entire system. After the sample is imaged by the objective lens 1, the image enters three identical optical zoom systems and then reaches the left eyepiece, the right eyepiece and the camera respectively, achieving the effect of trinocular observation.
[0032] The above embodiment discloses an independent trinocular stereomicroscope, in which rotating the handwheel 11 drives the gear shaft 14 to rotate, which in turn drives the second helical gear 13 to rotate, which in turn drives the first helical gear 8 to rotate, causing the zoom curve cylinder 9 to rotate. During the rotation of the zoom curve cylinder 9, the second lens mount 17 and the third lens mount 20 slide within the cavity of the zoom straight cylinder 10 via the first pin 18 and the second pin 21. During the movement of the second lens mount 17 and the third lens mount 20, the relative positions of the second lens 19 and the third lens 22 change, thereby changing the focal length and altering the magnification and field of view of the entire system. After the sample is imaged by the objective lens 1, the image enters three identical optical zoom systems, and then reaches the left eyepiece, the right eyepiece, and the camera, respectively, achieving the effect of trinocular observation.
[0033] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A freestanding trinocular stereo microscope, comprising an objective lens (1), an eyepiece (4), and a camera channel (5), characterized in that, The objective lens (1) is connected to the eyepiece (4) and the camera channel (5) through the second zoom group (6) to achieve trinocular observation; The second zoom assembly (6) includes a base (7), on which a gear seat (12) is fixedly mounted. A gear shaft (14) is rotatably mounted on the inner wall of the gear seat (12). A second helical gear (13) is fixedly mounted on the gear shaft (14). A handwheel (11) is fixedly connected to the top of the gear shaft (14). A zoom cylinder (10) is mounted on the base (7). A zoom curve cylinder (9) is sleeved on the zoom cylinder (10). A first helical gear (8) is fixedly mounted on the bottom surface of the zoom curve cylinder (9). The second helical gear (13) meshes with the first helical gear (8).
2. The independent trinocular stereo microscope according to claim 1, characterized in that, The surface of the variable-amplitude curve cylinder (9) has six curved grooves.
3. The independent trinocular stereo microscope according to claim 1, characterized in that, The surface of the zoom cylinder (10) has three straight grooves, and the zoom cylinder (10) has three identical optical zoom systems.
4. The independent trinocular stereo microscope according to claim 3, characterized in that, The optical zoom system includes a first lens mount (15), in which a first lens (16) is fixedly mounted.
5. A freestanding trinocular stereo microscope according to claim 4, characterized in that, The optical zoom system also includes a second lens mount (17), in which a second lens (19) is fixedly installed. A first pin (18) is fixedly provided on the second lens mount (17). The first pin (18) passes through both the straight groove of the zoom cylinder (10) and the curved groove of the zoom curved cylinder (9). The second lens mount (17) is slidably disposed in the cavity of the zoom cylinder (10).
6. A freestanding trinocular stereo microscope according to claim 4, characterized in that, The optical zoom system also includes a third lens mount (20), in which a third lens (22) is fixedly installed. The third lens mount (20) is slidably disposed in the cavity of the zoom cylinder (10). A second pin (21) is fixedly installed on the third lens mount (20). The second pin (21) passes through both the straight groove of the zoom cylinder (10) and the curved groove of the zoom curved cylinder (9).
7. A freestanding trinocular stereo microscope according to claim 4, characterized in that, The optical zoom system also includes a fourth lens mount (23), in which a fourth lens (24) is fixedly installed.