Front lens attachment and optical observation device

Abstract

The invention discloses a front lens accessory and an optical observation device. The front lens accessory comprises a folding assembly, the folding assembly is provided with a fixing structure and a folding retainer, the fixing structure comprises a fixing block, one end of the fixing block is provided with a connecting convex tooth, the end face, away from the fixing block, of the connecting convex tooth is concavely provided with a containing groove, and the containing groove penetrates through two opposite side faces of the connecting convex tooth. Two opposite side walls of the containing groove are connected through a guide column, a sliding hole is formed in the folding retainer, the guide column penetrates through the sliding hole and is in sliding fit with the sliding hole, so that the folding retainer is in sliding connection with the fixing structure, and the folding retainer is switched between a folding state and an unfolding state relative to the fixing structure through sliding connection.

Description

[0001] This application is a divisional application of patent application number 202511651099.6 (the original application was filed on November 12, 2025, and the invention was entitled "Front-facing Lens Accessory and Optical Observation Device"). Technical Field

[0002] This disclosure relates to the field of optical observation devices, such as a front-facing lens accessory and an optical observation device. Background Technology

[0003] Optical observation devices can include, for example, microscopes, specifically surgical microscopes, particularly ophthalmic surgical microscopes. Such microscopes typically have a microscope body with various optical elements and a tube with an eyepiece. Furthermore, microscopes usually have at least one objective lens element. A common front lens attachment is fixed around the microscope objective lens element.

[0004] Among related technologies, the folding structure of the front-facing lens accessory frame is relatively complex and cumbersome to operate, resulting in poor reliability. Furthermore, the folding structure is overly integrated with the cap of the front-facing lens accessory, leading to a bulky size that hinders disinfection procedures and makes it unsuitable for the diverse disinfection equipment and environments of different hospitals. Summary of the Invention

[0005] The purpose of this disclosure is to provide a front-facing lens accessory and an optical observation device.

[0006] The first aspect of this disclosure provides a front-facing camera accessory, including: A folding assembly has a fixing structure and a folding retainer; the fixing structure includes a fixing block, one end of which is provided with a connecting tooth, and the end face of the connecting tooth away from the fixing block is recessed with a receiving groove, the receiving groove passing through two opposite sides of the connecting tooth, and the two opposite sidewalls of the receiving groove being connected by guide posts; the folding retainer is provided with a sliding hole; The guide post passes through the sliding hole and slides in cooperation with the sliding hole, so that the folding retainer is slidably connected to the fixed structure. Through the sliding connection, the folding retainer can switch between a folded state and an unfolded state relative to the fixed structure.

[0007] The second aspect of this disclosure provides another front-facing camera accessory, including: A focusing module, wherein the bottom of the focusing module is provided with an interface component, the interface component is a ring structure, the ring structure has a first ring body and a second ring body, and the interface component is connected to the focusing module through the second ring body; A cap is placed over the focusing module; A folding assembly is inserted into the cap and is detachably connected to the interface component via a first ring of the interface component.

[0008] A third aspect of this disclosure provides an optical observation device, including the front-facing lens accessory described in the first aspect above. Attached Figure Description

[0009] Figure 1 This is a front view of a front-facing lens accessory in a folded state according to an embodiment of this disclosure; Figure 2 This is a front view of a front-facing lens attachment in an unfolded state according to an embodiment of this disclosure; Figure 3 This is an exploded view of a front-facing camera accessory from a first-view perspective, according to an embodiment of this disclosure. Figure 4 This is an exploded view of an interface component and a folding assembly provided according to an embodiment of the present disclosure; Figure 5 This is a partial structural cross-sectional view of a front-facing lens accessory provided according to an embodiment of the present disclosure; Figure 6 This is an exploded view of a front-facing camera accessory from a second perspective, according to an embodiment of this disclosure; Figure 7 This is a front view of a front-facing lens accessory in an intermediate state according to an embodiment of the present disclosure.

[0010] In the picture: 1. Focusing module; 11. Interface component; 111. First ring body; 1111. Mounting hole; 1112. Mounting opening; 112. Second ring body; 2. Cap; 3. Folding assembly; 31. Fixing structure; 311. Fixing block; 3111. Guide channel; 3112. Actuating groove; 3113. Locking groove; 312. Connecting tooth; 3121. Receiving groove; 313. Guide post; 314. Abutting block; 32. Folding retainer; 321. Sliding hole; 33. Positioning pin; 34. Locking pin; 341. Locking rod; 342. Mounting cap; 35. Auxiliary disassembly assembly; 351. Guide component; 352. Elastic component; 353. Actuating button; 354. Top screw; 36. First magnetic suction assembly; 37. Second magnetic suction assembly; 38. Front lens; 39. Third magnetic suction assembly. Detailed Implementation

[0011] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the drawings, not the entire structure.

[0012] In the description of this disclosure, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0013] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0014] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 disclosure. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0015] This disclosure provides a front-facing camera accessory.

[0016] refer to Figures 1 to 7 The front-facing camera accessory includes a folding assembly 3, which has a fixing structure 31 and a folding retainer 32. The folding retainer 32 is slidably connected to the fixing structure 31 so that the folding retainer 32 can switch between a folded state and an unfolded state relative to the fixing structure 31.

[0017] In this embodiment, by setting the folding retainer 32 and the fixed structure 31 as a sliding connection, the folding retainer 32 can quickly switch between a folded state and an unfolded state relative to the fixed structure 31. Furthermore, the front-facing lens accessory provided in this embodiment has a simple structure, is easy to operate, and facilitates rapid state switching.

[0018] As an optional embodiment, continue to refer to Figure 4The folding retainer 32 is provided with a sliding hole 321. The fixing structure 31 includes a fixing block 311. One end of the fixing block 311 is provided with a connecting tooth 312. The end face of the connecting tooth 312 away from the fixing block 311 is recessed with a receiving groove 3121. The receiving groove 3121 passes through the two opposite sides of the connecting tooth 312. The two opposite side walls of the receiving groove 3121 are connected by a guide post 313. The guide post 313 passes through the sliding hole 321 and slides in cooperation with the sliding hole 321.

[0019] Continue to refer to Figure 1 , Figure 2 and Figure 7 When switching to the folded state is required, the folding retainer 32 can be controlled to slide relative to the fixed structure 31. At this time, the guide post 313 slides and engages with the sliding hole 321. When the guide post 313 abuts against the first end of the sliding hole 321 along its length (i.e., against the end of the sliding hole 321 near the front lens 38), the folding retainer 32 can complete the folding operation. After the folding retainer 32 completes the folding operation, the front lens accessory can be slid to its storage position in the optical observation device. At this time, the front lens accessory occupies little space and will not affect the surgical operation or has little impact on the surgical operation. When the folding retainer 32 is fully folded and the front lens accessory is slid to the storage position, the front lens assembly in the front lens accessory exits the optical path of the optical observation device, thereby switching the optical observation device to the anterior segment observation mode.

[0020] Continue to refer to Figure 1 , Figure 2 and Figure 7 When switching to the unfolded state, the folding retainer 32 can be controlled to slide relative to the fixed structure 31. At this time, the guide post 313 slides in engagement with the sliding hole 321. When the guide post 313 abuts against the second end of the sliding hole 321 along its length (i.e., against the end of the sliding hole 321 away from the front lens 38), the folding retainer 32 can complete the unfolding operation. After the folding retainer 32 has completed the unfolding operation, or during the unfolding operation, the front lens accessory can be slid to its working position in the optical observation device. When the folding retainer 32 is fully unfolded and the front lens accessory has slid to its working position, the front lens assembly in the front lens accessory can be introduced into the optical path of the optical observation device, thereby switching the optical observation device to the posterior segment observation mode.

[0021] As an optional embodiment, the connecting tooth 312 is set at an angle to the fixing block 311, and the connecting tooth 312 extends in a direction away from the fixing block 311.

[0022] Continue to refer to Figure 1When the folding retainer 32 is switched to the folded state, the center of gravity of the folding retainer 32 moves toward the direction of the fixed structure 31. By setting the connecting protrusion 312 to extend away from the fixed block 311, the folding retainer 32 and the connecting protrusion 312 can fit together when the folding retainer 32 is folded. This allows the connecting protrusion 312 to provide a certain support for the folding retainer 32 and improve the folding stability of the folding retainer 32.

[0023] Continue to refer to Figure 1 The end of the folding retainer 32 is provided with or installed with a front lens 38. By setting the connecting protrusion 312 to extend away from the fixing block 311, it can be avoided that after the folding retainer 32 is folded, the folding retainer 32, especially the front lens 38 provided or installed on it, will not come into contact or collide with other components (such as the focusing module 1 or the cap 2). This can prevent the front lens 38 and the folding retainer 32 from being contaminated or damaged due to contact or collision with other components.

[0024] Preferably, the folding retainer 32 is magnetically connected to the connecting protrusion 312 in the folded state. When switched to the folded state, the magnetic connection between the folding retainer 32 and the connecting protrusion 312 prevents the folding retainer 32 from unfolding or wobbling due to external force. The magnetic connection between the folding retainer 32 and the connecting protrusion 312 also guides them to fit precisely, ensuring that the folding retainer 32 and the connecting protrusion 312 maintain a compact and orderly shape after each fold, facilitating storage. Exemplarily, the folding retainer 32 and the connecting protrusion 312 are magnetically connected via a first magnetic assembly 36, which includes a first magnet and a first martensitic stainless steel component. The first magnet is mounted on the folding retainer 32, and the first martensitic stainless steel component is mounted on the connecting protrusion 312; alternatively, the first martensitic stainless steel component is mounted on the folding retainer 32, and the first magnet is mounted on the connecting protrusion 312.

[0025] Continue to refer to Figure 4 In this embodiment, the bottom of the receiving groove 3121 is provided with an abutment block 314. The extension direction of the abutment block 314 is set at an angle to the extension direction of the receiving groove 3121, and the extension direction of the abutment block 314 is set at an angle to the extension direction of the fixing block 311. The folding retainer 32 abuts against the abutment block 314 in the unfolded state.

[0026] In this embodiment, when the guide post 313 abuts against the second end of the sliding hole 321 along the length direction and the folding retainer 32 is fully unfolded, the folding retainer 32 can be fixed by abutting the abutting block 314, which restricts the further sliding or swinging of the folding retainer 32, and prevents the folding retainer 32 from deviating from its original position due to external force or its own deformation, thereby improving the stability and reliability of the folding retainer 32 in the unfolded state.

[0027] Preferably, the folding retainer 32 is magnetically connected to the abutment block 314 in its unfolded state. When fully unfolded, the folding retainer 32 is magnetically fixed to the abutment block 314. When the folding retainer 32 approaches the abutment block 314, the magnetic force generates a pulling effect, automatically pulling the folding retainer 32 to align with the reference surface of the abutment block 314, eliminating the need for manual adjustment and providing high positioning accuracy. The magnetic connection has a flexible transition characteristic, which can buffer the impact force at the moment of contact and reduce damage caused by mechanical impact. Furthermore, the magnetic connection only requires a certain pulling force to separate the folding retainer 32 and the abutment block 314, making disassembly convenient. For example, the folding retainer 32 and the abutment block 314 are magnetically connected by a second magnetic assembly 37, which includes a second magnet and a second martensitic stainless steel component. The second magnet is mounted on the folding retainer 32 and the second martensitic stainless steel component is mounted on the abutment block 314, or the second martensitic stainless steel component is mounted on the folding retainer 32 and the second magnet is mounted on the abutment block 314.

[0028] This disclosure also provides another front-facing camera accessory.

[0029] Continue to refer to Figures 1 to 7 The front-facing camera accessory includes a focusing module 1, a cap 2, and a folding assembly 3. The focusing module 1 has an interface piece 11 at its bottom, the cap 2 covers the focusing module 1, and the folding assembly 3 passes through the cap 2 and is detachably connected to the interface piece 11.

[0030] The configuration of the folding component 3 in this embodiment is the same as or similar to that in the previous embodiment, and will not be repeated here.

[0031] In this embodiment, the folding component 3 is inserted through the cap 2 and detachably connected to the interface component 11, providing high ease of assembly and disassembly and facilitating maintenance. Furthermore, by detachably connecting the folding component 3 to the interface component 11, different sizes or types of folding components 3 can be selected according to requirements, expanding the scope of application. Additionally, by decoupling the folding component 3 from the cap 2, the excessive concentration and large size of the disinfection components can be avoided, preventing them from being widely adaptable to the disinfection equipment and environments of different hospitals.

[0032] Continue to refer to Figure 4 and Figure 6As an optional embodiment, the interface component 11 has a ring structure, comprising a first ring body 111 and a second ring body 112 coaxially disposed on the outer surface of the first ring body 111. The interface component 11 is connected to the focusing module 1 through the second ring body 112, and the second ring body 112 is coaxially disposed with the focusing lens of the focusing module 1. The folding assembly 3 is detachably connected to the first ring body 111. In this embodiment, the interface component 11 is movably connected to the focusing module 1 through the second ring body 112. For example, the interface component 11 can rotate around its own center, thereby facilitating the operator to adjust the position and posture of the folding assembly 3, and thus facilitating the operator's surgical operation. In this embodiment, the interface component 11 can isolate the vibration or deformation generated by the folding assembly 3 during movement, avoiding focus shift caused by the movement of the folding assembly 3; the detachable connection between the folding assembly 3 and the first ring body 111 improves the convenience of assembly and disassembly.

[0033] Continue to refer to Figure 4 As an optional embodiment, the first ring body 111 is provided with a mounting hole 1111 and a mounting opening 1112; the folding assembly 3 has a fixing block 311, which is provided with a positioning pin 33 and a locking pin 34; wherein, the mounting hole 1111 cooperates with the positioning pin 33, and the mounting opening 1112 cooperates with the locking pin 34, so that the folding assembly 3 and the first ring body 111 are detachably connected. In this embodiment, the cooperation between the mounting hole 1111 and the positioning pin 33 can realize the pre-positioning between the first ring body 111 and the fixing block 311; the cooperation between the mounting opening 1112 and the locking pin 34 can fix the first ring body 111 and the fixing block 311, which has high disassembly and assembly efficiency.

[0034] Continue to refer to Figure 4 and Figure 5 As an optional embodiment, the front-facing camera accessory also includes an auxiliary disassembly assembly 35. The auxiliary disassembly assembly 35 has a guide 351, an elastic element 352, and a toggle button 353. The fixing block 311 has a guide channel 3111 and a toggle groove 3112. The guide 351 is disposed in the guide channel 3111 and passes through the toggle button 353. One end of the guide 351 is connected to the fixing block 311, and the other end of the guide 351 is fitted with a top screw 354. The elastic element 352 is sleeved on the guide 351, with one end of the elastic element 352 connected to the toggle button 353 and the other end connected to the top screw 354. The toggle button 353 is slidably disposed within the toggle groove 3112. By applying a certain pushing force to the toggle button 353, the toggle button 353 slides along the toggle groove 3112, causing the elastic element 352 to be compressed or stretched, which assists in the assembly and disassembly of the folding assembly 3 and the first ring body 111, and improves the convenience of assembly and disassembly.

[0035] Continue to refer to Figure 5As an optional embodiment, the fixing block 311 is provided with a locking groove 3113, and the locking pin 34 has a locking rod 341 and a mounting cap 342 provided at one end of the locking rod 341. The locking rod 341 passes through the locking groove 3113 and slides in cooperation with the locking groove 3113, and the bottom end of the locking rod 341 is connected to the toggle button 353.

[0036] As an alternative embodiment, the mounting opening 1112 has a ramp for the mounting cap 342 to slide into, improving the assembly efficiency of the locking pin 34.

[0037] In this embodiment, when the folding assembly 3 is installed with the first ring body 111, the positioning pin 33 is inserted into the mounting hole 1111. The entire folding assembly 3 is rotated so that the positioning pin 33 rotates a certain angle around the mounting hole 1111 in the positive direction. At the same time, the mounting cap 342 enters the mounting opening 1112 from the inside of the interface piece 11 along the slope.

[0038] In this embodiment, when the folding assembly 3 is disassembled from the first ring body 111, a certain pushing force is applied to the toggle button 353, the elastic element 352 is compressed, and the toggle button 353 pushes part of the locking rod 341 and the mounting cap 342 out of the mounting opening 1112. At the same time, the entire folding assembly 3 is rotated, so that the positioning pin 33 rotates in the opposite direction around the mounting hole 1111 by a certain angle, and the positioning pin 33 is dislodged from the mounting hole 1111. Then the toggle button 353 is released, and under the elastic force of the elastic element 352, the toggle button 353 returns to its original position, which is convenient to operate.

[0039] In this embodiment, the fixing block 311 and the first ring 111 are connected by magnetic attraction. Magnetic attraction provides automatic guidance and alignment; when the fixing block 311 and the first ring 111 approach each other, the magnetic field pulls them to automatically adjust their positions, achieving precise alignment and simplifying operation. Magnetic attraction also provides strong connection stability and good impact resistance. Exemplarily, the fixing block 311 and the first ring 111 are magnetically connected by a third magnetic attraction component 39. The third magnetic attraction component 39 includes a third magnet and a third martensitic stainless steel component. The third magnet is mounted on the fixing block 311, and the third martensitic stainless steel component is mounted on the first ring 111; alternatively, the third martensitic stainless steel component is mounted on the fixing block 311, and the third magnet is mounted on the first ring 111. In this embodiment, the third magnet is disposed between the mounting hole 1111 and the mounting opening 1112, and the third martensitic stainless steel part is disposed between the positioning pin 33 and the locking pin 34; or the third magnet is disposed between the positioning pin 33 and the locking pin 34, and the third martensitic stainless steel part is disposed between the mounting hole 1111 and the mounting opening 1112.

[0040] This embodiment also provides an optical observation device.

[0041] In this embodiment, the optical observation device may include the front-facing lens accessory described in any of the preceding embodiments, which will not be repeated here. The optical observation device provided in this embodiment has a simple structure and is easy to operate.

[0042] The optical observation device may include an ophthalmic surgical microscope. The ophthalmic surgical microscope has an anterior segment observation mode and a posterior segment observation mode. When the folding retainer 32 is fully folded and the front lens attachment is slid to the storage position, the front lens assembly in the front lens attachment exits the optical path of the ophthalmic surgical microscope, thereby switching the ophthalmic surgical microscope to anterior segment observation mode. When the folding retainer 32 is fully unfolded and the front lens attachment is slid to the working position, the front lens assembly in the front lens attachment can be introduced into the optical path of the ophthalmic surgical microscope, thereby switching the ophthalmic surgical microscope to posterior segment observation mode.

[0043] Obviously, the above embodiments of this disclosure are merely examples for clear illustration and are not intended to limit the implementation of this disclosure. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of this disclosure. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of the claims of this disclosure.

Claims

1. A front-facing camera accessory, comprising: The folding assembly (3) has a fixing structure (31) and a folding retainer (32); the fixing structure (31) includes a fixing block (311), one end of the fixing block (311) is provided with a connecting tooth (312), the end face of the connecting tooth (312) away from the fixing block (311) is recessed with a receiving groove (3121), the receiving groove (3121) passes through the two opposite sides of the connecting tooth (312), and the two opposite sidewalls of the receiving groove (3121) are connected by guide posts (313); the folding retainer (32) is provided with a sliding hole (321); The guide post (313) passes through the sliding hole (321) and slides in cooperation with the sliding hole (321), so that the folding retainer (32) is slidably connected to the fixed structure (31). Through the sliding connection, the folding retainer (32) can switch between the folded state and the unfolded state relative to the fixed structure (31).

2. The front-facing lens accessory according to claim 1, wherein, The connecting tooth (312) is set at an angle to the fixing block (311), and the connecting tooth (312) extends in a direction away from the fixing block (311).

3. The front-facing lens accessory according to claim 1, wherein, The bottom of the receiving groove (3121) is provided with an abutment block (314), the extension direction of the abutment block (314) is set at an angle to the extension direction of the receiving groove (3121), and the extension direction of the abutment block (314) is set at an angle to the extension direction of the fixing block (311).

4. The front-facing lens accessory according to claim 3, wherein, The folding retainer (32) is magnetically connected to the abutment block (314) in the unfolded state.

5. A front-facing camera accessory, comprising: A focusing module (1) is provided with an interface component (11) at its bottom. The interface component (11) has a ring structure and has a first ring body (111) and a second ring body (112). The interface component (11) is connected to the focusing module (1) through the second ring body (112). Cap (2) is placed on the focusing module (1); The folding component (3) is inserted through the cap (2) and is detachably connected to the interface component (11) via the first ring (111) of the interface component (11).

6. The front-facing lens accessory according to claim 5, wherein, The folding assembly (3) includes the folding assembly (3) in the front lens accessory according to any one of claims 1-5.

7. The front-facing lens accessory according to claim 5, wherein, The first ring body (111) and the second ring body (112) are coaxially arranged, and the second ring body (112) is disposed on the outer surface of the first ring body (111); The second ring body (112) is coaxially arranged with the focusing lens of the focusing module (1).

8. The front-facing lens accessory according to claim 7, wherein, The first ring body (111) is provided with a mounting hole (1111) and a mounting opening (1112); The folding assembly (3) has a fixing block (311), on which a positioning pin (33) and a locking pin (34) are provided; wherein, The mounting hole (1111) engages with the positioning pin (33), and the mounting opening (1112) engages with the locking pin (34), so that the folding assembly (3) is detachably connected to the first ring body (111).

9. The front-facing lens accessory according to claim 8, further comprising: The auxiliary disassembly assembly (35) has a guide (351), an elastic element (352), and a toggle button (353); The fixing block (311) has a guide channel (3111) and a moving groove (3112); The guide member (351) is disposed in the guide channel (3111) and passes through the toggle button (353). One end of the guide member (351) is connected to the fixing block (311), and the other end of the guide member (351) is equipped with a top screw (354). The elastic member (352) is sleeved on the guide member (351), and one end of the elastic member (352) is connected to the toggle button (353). The other end of the elastic member (352) is connected to the top screw (354). The toggle button (353) is slidably disposed in the toggle groove (3112).

10. The front-facing lens accessory according to claim 9, wherein, The fixing block (311) is provided with a locking groove (3113); The locking pin (34) has a locking rod (341) and a mounting cap (342) provided at one end of the locking rod (341); The locking rod (341) passes through the locking groove (3113) and slides with the locking groove (3113), and the bottom end of the locking rod (341) is connected to the toggle button (353).

11. An optical observation device, comprising a front-facing lens accessory as described in any one of claims 1-10.

Images