Manual lens and imaging device
Through manual focus adjustment, the combined structure of the eccentric wheel and the focus adjustment nail is used to solve the problem of high cost of electric focus adjustment and achieve a low-cost and high-precision focus adjustment effect.
Patent Information
- Application Number
- CN202422302311.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing electric focus lenses are costly.
The manual focus adjustment method is adopted, through the combined structure of the eccentric wheel and the focus adjustment nail, the eccentric wheel rotates to drive the focus adjustment nail movement to achieve focus adjustment, and the friction force is increased through the elastic member to improve the focus accuracy.
It realizes manual focus with lower cost, improves focus accuracy, avoids eccentric rotation, and ensures stability and accuracy of focus.
Smart Images
Figure CN223078529U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of optical devices, and particularly relates to a manual lens and an imaging device. Background Art
[0002] During the use of a lens, it is usually necessary to adjust the focal length to obtain a good viewing angle or a clear image. The focus adjustment of the existing lens is through the linkage of guide pins. Briefly speaking, guide pins are installed on the focus adjustment barrel, and spiral grooves are machined on the lens barrel. The guide pins cooperate with the spiral grooves, and the linear movement of the guide pins is driven by rotating the lens barrel. The existing lens barrel usually uses a motor to drive the rotation to achieve electric focus adjustment, but this method has a high cost. Summary of the Utility Model
[0003] The technical problem to be solved by this application is that the cost of the existing electric focus adjustment lens is relatively high. To solve this technical problem, a manual lens and an imaging device with a lower cost and capable of focus adjustment are provided.
[0004] The technical solution proposed by this application is as follows:
[0005] A manual lens, comprising:
[0006] A lens body;
[0007] A focus adjustment dial pin, one end of which protrudes from the lens body and can reciprocate along the axial direction of the lens body to perform focus adjustment during the movement;
[0008] An installation component, arranged on the lens body;
[0009] An eccentric wheel, arranged on the lens body, and an eccentric groove is provided on the eccentric wheel. One end of the focus adjustment dial pin protruding from the lens body can extend into the eccentric groove;
[0010] An elastic member, arranged between the installation component and the eccentric wheel, for pressing the eccentric wheel against the installation component;
[0011] Wherein, the eccentric wheel can rotate self under the action of an external force, and drive the focus adjustment dial pin to move during the rotation.
[0012] Further, the installation component includes an installation seat and a limit ring. The installation seat is arranged on the lens body. The limit ring is fixedly connected to the installation seat, and the limit ring abuts against the side surface of the eccentric wheel. The elastic member is arranged between the limit ring and the eccentric wheel to press the eccentric wheel against the installation seat.
[0013] Further, the mounting base is provided with a mounting cavity, the eccentric wheel and the limiting ring are both arranged in the mounting cavity, one end of the focusing dial extends into the mounting cavity, and the elastic member is used to press the eccentric wheel against the bottom surface of the mounting cavity.
[0014] Further, the mounting base is provided with a strip-shaped hole communicating with the mounting cavity, and one end of the focusing dial passes through the strip-shaped hole and extends into the mounting cavity.
[0015] Further, the eccentric wheel includes a connecting portion and an eccentric portion, the limiting ring abuts against the side surface of the connecting portion, the eccentric portion is connected to one end of the connecting portion, and the eccentric groove is formed on the side of the eccentric portion away from the connecting portion.
[0016] Further, the cross-sectional shapes of the connecting portion and the eccentric portion are both circular, and the radial dimension of the eccentric portion is greater than the radial dimension of the connecting portion;
[0017] One end of the elastic member abuts against the limiting ring, and the other end abuts against the side where the eccentric portion is connected to the connecting portion to press the eccentric portion against the mounting base.
[0018] Further, the mounting assembly further includes a fastener, and the fastener is connected to the mounting base and the limiting ring to fix the limiting ring relative to the mounting base.
[0019] Further, the manual lens further includes a rotating cover, the rotating cover is sleeved on the outer side of the mounting base and is fixedly connected to the eccentric wheel.
[0020] Further, the manual lens further includes a first sealing member and a second sealing member, the first sealing member is arranged between the mounting base and the lens body, and the second sealing member is arranged between the mounting base and the rotating cover.
[0021] An imaging device includes the manual lens as described above.
[0022] By using the above-mentioned manual lens, an external force is manually applied to make the eccentric wheel rotate self - axially, so as to drive the focusing dial to move to achieve focusing. This manual lens has a lower cost compared with electric focusing. In addition, the elastic member can make the eccentric wheel press against the mounting assembly, thereby increasing the friction between the eccentric wheel and the mounting assembly, avoiding the situation of the eccentric wheel rotating back during the focusing process, and improving the focusing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation to the present application.
[0024] Figure 1 Exploded structural schematic diagram of a manual lens provided by an embodiment of the present application;
[0025] Figure 2 Cross-sectional structural schematic diagram of a manual lens provided by another embodiment of the present application;
[0026] Figure 3 is Figure 2 Structural schematic diagram of the mounting base in the manual lens shown;
[0027] Figure 4 is Figure 2 Structural schematic diagram of the eccentric wheel in the manual lens shown.
[0028] Label description:
[0029] 110, lens body; 120, focusing dial pin; 130, mounting assembly; 140, eccentric wheel; 141, eccentric groove; 142, connecting portion; 143, eccentric portion; 150, elastic member; 160, mounting base; 161, mounting cavity; 162, strip-shaped hole; 163, mounting groove; 170, limiting ring; 180, rotating cover; 191, connecting screw; 192, fastener; 193, decorative member; 194, first seal; 195, second seal. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.
[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.
[0032] On the one hand, the present application provides a manual lens, which is focused manually, and has a lower cost compared with electric focusing.
[0033] Such as Figure 1 and Figure 2As shown in the figure, the manual lens includes a lens body 110 and a focusing dial 120. One end of the focusing dial 120 protrudes from the lens body 110 and can reciprocate along the axial direction of the lens body 110 to perform focusing during the movement. It can be understood that the other end of the focusing dial 120 is located inside the lens barrel body and is connected to the lens barrel for focusing to drive the focusing lens barrel to move, thereby achieving focusing.
[0034] Furthermore, the manual lens further includes a mounting assembly 130, an eccentric wheel 140, and an elastic member 150. The mounting assembly 130 is disposed on the lens body 110, the eccentric wheel 140 is disposed on the lens body 110, and the elastic member 150 is disposed between the mounting assembly 130 and the eccentric wheel 140 for pressing the eccentric wheel 140 against the mounting assembly 130 to increase the friction between the eccentric wheel 140 and the mounting assembly 130. Further, the eccentric wheel 140 is provided with an eccentric groove 141, and one end of the focusing dial 120 protruding from the lens body 110 can extend into the eccentric groove 141; at the same time, the eccentric wheel 140 can rotate self-rotation under the action of an external force and drive the focusing dial 120 to move during the self-rotation process, thereby achieving focusing.
[0035] With the above manual lens, by manually applying an external force to make the eccentric wheel 140 rotate self-rotation to drive the focusing dial 120 to move to achieve focusing, the manual lens has a lower cost compared with electric focusing. In addition, the elastic member 150 can make the eccentric wheel 140 press against the mounting assembly 130, thereby increasing the friction between the eccentric wheel 140 and the mounting assembly 130, avoiding the situation that the eccentric wheel 140 rotates back during the focusing process, and improving the focusing accuracy.
[0036] Combined with Figure 4 It should be noted that in this embodiment, the rotation angle of the eccentric wheel 140 is 180°, and when the eccentric wheel 140 rotates 180°, it can make the focusing dial 120 complete the required stroke for focusing, that is, when the eccentric wheel 140 rotates 180°, it can ensure that the manual lens achieves its own focusing amount. In other embodiments, the rotation angle of the eccentric wheel 140 can also be other, as long as it is ensured that when the eccentric wheel 140 rotates, the focusing dial 120 can complete the required formation for focusing.
[0037] In one embodiment, the mounting assembly 130 includes a mounting base 160 and a limiting ring 170. The mounting base 160 is disposed on the lens body 110 and can be specifically connected to the lens body 110 through connecting screws 191. The limiting ring 170 is fixedly connected to the mounting base 160, and the limiting ring 170 presses against the side surface of the eccentric wheel 140 to limit the eccentric wheel 140 while ensuring that the eccentric wheel 140 can rotate self - sufficiently. The elastic member 150 is disposed between the limiting ring 170 and the eccentric wheel 140 to press the eccentric wheel 140 against the mounting base 160. Optionally, the limiting ring 170 is a rubber ring, and the eccentric wheel 140 passes through the middle of the limiting ring 170 and contacts the inner wall of the limiting ring 170, thereby receiving the frictional force that restricts rotation provided by the limiting ring 170.
[0038] It can be understood that in this embodiment, there is a frictional force between the limiting ring 170 and the eccentric wheel 140, that is, the limiting ring 170 also provides damping for the rotation of the eccentric wheel 140. At the same time, the elastic member 150 can press the eccentric wheel 140 against the mounting base 160, increasing the friction between the mounting base 160 and the eccentric wheel 140, thereby effectively preventing the eccentric wheel 140 from rotating back.
[0039] Please refer to Figures 1 to 3 , in one embodiment, the mounting base 160 is provided with a mounting cavity 161. Both the eccentric wheel 140 and the limiting ring 170 are located in the mounting cavity 161. One end of the focusing dial 120 extends into the mounting cavity 161 and extends into the eccentric groove 141 of the eccentric wheel 140 in the mounting cavity 161. The elastic member 150 is used to press the eccentric wheel 140 against the bottom surface of the mounting cavity 161, thereby increasing the frictional force between the mounting base 160 and the eccentric wheel 140.
[0040] Further, the mounting base 160 is provided with a strip - shaped hole 162 communicating with the mounting cavity 161. One end of the focusing dial 120 passes through the strip - shaped hole 162 and extends into the mounting cavity 161, and finally extends into the eccentric groove 141 of the eccentric wheel 140. It can be determined that the strip - shaped hole 162 on the mounting base 160 is used for the movement of the focusing dial 120. Therefore, the travel of the focusing dial 120 moving in the strip - shaped hole 162 can realize the focusing of the focusing dial 120.
[0041] In one embodiment, the mounting assembly 130 further includes a fastener 192. The fastener 192 is connected to the mounting base 160 and the limiting ring 170 to fix the limiting ring 170 relative to the mounting base 160 and prevent the limiting ring 170 from rotating with the eccentric wheel 140. Preferably, the fastener 192 is a screw. The screw is connected to the mounting base 160, and one end extends into the mounting cavity 161 and is connected to the limiting ring 170.
[0042] Please refer to Figure 2 and Figure 4, in one embodiment, the eccentric wheel 140 includes a connecting portion 142 and an eccentric portion 143. The limiting ring 170 presses against the side surface of the connecting portion 142. The eccentric portion 143 is connected to one end of the connecting portion 142, and the eccentric groove 141 is formed on the side of the eccentric portion 143 away from the connecting portion 142. In practical applications, the cross-sectional shapes of both the connecting portion 142 and the eccentric portion 143 are circular, and the radial dimension of the eccentric portion 143 is greater than that of the connecting portion 142. In this way, after the limiting ring 170 presses against the side surface of the connecting portion 142, an installation space is formed between the limiting ring 170 and the eccentric portion 143. The elastic member 150 is disposed in the installation space, with one end abutting against the limiting ring 170 and the other end abutting against the side where the eccentric portion 143 is connected to the connecting portion 142, thereby pressing the eccentric portion 143 against the bottom surface of the installation cavity 161. Preferably, the elastic member 150 is a wave spring. The wave spring is sleeved outside the connecting portion 142, with one end abutting against the limiting ring 170 and the other end abutting against the eccentric portion 143.
[0043] Specifically Figure 2 In the illustrated embodiment, the shape of the installation cavity 161 is cylindrical, and its radial dimension matches that of the eccentric portion 143. At the same time, the connecting portion 142 is cylindrical. The connecting portion 142 is inserted into the central opening of the limiting ring 170, and the limiting ring 170 presses against the side surface of the connecting portion 142. In this way, the position deviation of the eccentric wheel 140 during rotation can be avoided, ensuring the accuracy of rotational focusing.
[0044] In one embodiment, the manual lens further includes a rotating cover 180. The rotating cover 180 is sleeved outside the mounting base 160 and is fixedly connected to the eccentric wheel 140. An operator can drive the eccentric wheel 140 to rotate by rotating the rotating cover 180, thereby achieving focusing, and it is more convenient to operate through the rotating cover 180. Further, the tops of the rotating cover 180 and the eccentric wheel 140 are connected by a connecting screw 191. Optionally, a decorative member 193 is further provided on the outer surface of the rotating cover 180. The decorative member 193 is annular and is disposed on the upper surface of the rotating cover 180. Additionally, it can be understood that anti-slip stripes can be provided on the outer side of the rotating cover 180 for convenient rotation.
[0045] In one embodiment, the manual lens further includes a first sealing member 194 and a second sealing member 195. The first sealing member 194 is disposed between the mounting base 160 and the lens body 110, and the second sealing member 195 is disposed between the mounting base 160 and the rotating cover 180 to ensure the sealing performance inside the lens body 110 and prevent external impurities from entering the lens. Preferably, both the first sealing member 194 and the second sealing member 195 are sealing rings.
[0046] Specifically Figure 3In the illustrated embodiment, mounting grooves 163 are formed in both the side surface and the bottom surface of the mounting base 160, and the first seal 194 and the second seal 195 are respectively disposed in the mounting grooves 163 on the side surface and the bottom surface.
[0047] In summary, the manual lens provided by the present application has at least the following advantages:
[0048] 1. By rotating the rotary cover 180 to drive the eccentric wheel 140 to rotate, and then driving the focusing pin 120 to move, so as to achieve the focusing of the lens. There is no need to set a motor drive, the structure is simple, and the cost is lower;
[0049] 2. The eccentric wheel 140 is in frictional contact with the limiting ring 170, and at the same time, the elastic member 150 can press the eccentric wheel 140 against the mounting base 160 to increase the frictional force between the eccentric wheel 140 and the mounting base 160, thereby effectively preventing the eccentric wheel 140 from rotating back during the focusing process and ensuring a high focusing accuracy.
[0050] On the other hand, the present application also provides an imaging device, which includes the manual lens in the above embodiment.
Claims
1. A manual lens, characterized in that, Comprising: Lens body; Focusing dial pin, one end of which protrudes from the lens body and can reciprocate axially along the lens body to perform focusing during the movement; Mounting assembly, arranged on the lens body; Eccentric wheel, arranged on the lens body, and the eccentric wheel is provided with an eccentric groove, and one end of the focusing dial pin protruding from the lens body can extend into the eccentric groove; Elastic member, arranged between the mounting assembly and the eccentric wheel, for pressing the eccentric wheel against the mounting assembly; Wherein, the eccentric wheel can rotate self - driven under the action of an external force and drive the focusing dial pin to move during the rotation.
2. The manual lens according to claim 1, characterized in that The mounting assembly includes a mounting seat and a limiting ring. The mounting seat is arranged on the lens body. The limiting ring is fixedly connected to the mounting seat, and the limiting ring presses against the side surface of the eccentric wheel. The elastic member is arranged between the limiting ring and the eccentric wheel to press the eccentric wheel against the mounting seat.
3. The manual lens according to claim 2, characterized in that, The mounting seat is provided with a mounting cavity. The eccentric wheel and the limiting ring are both arranged in the mounting cavity. One end of the focusing dial pin extends into the mounting cavity. The elastic member is used to press the eccentric wheel against the bottom surface of the mounting cavity.
4. The manual lens according to claim 3, wherein, The mounting seat is provided with a strip - shaped hole communicating with the mounting cavity. One end of the focusing dial pin passes through the strip - shaped hole and extends into the mounting cavity.
5. The manual lens according to claim 2, wherein The eccentric wheel includes a connecting portion and an eccentric portion. The limiting ring presses against the side surface of the connecting portion. The eccentric portion is connected to one end of the connecting portion, and the eccentric groove is arranged on the side of the eccentric portion away from the connecting portion.
6. The manual lens according to claim 5, wherein, The cross - sectional shapes of both the connecting portion and the eccentric portion are circular, and the radial dimension of the eccentric portion is larger than the radial dimension of the connecting portion; One end of the elastic member abuts against the limiting ring, and the other end abuts against the side where the eccentric portion is connected to the connecting portion to press the eccentric portion against the mounting seat.
7. The manual lens according to claim 2, wherein, The mounting assembly further includes a fastener, and the fastener connects the mounting seat and the limiting ring to make the limiting ring fixed relative to the mounting seat.
8. The manual lens according to claim 2, wherein, The manual lens further includes a rotating cover, and the rotating cover is sleeved on the outer side of the mounting seat and is fixedly connected to the eccentric wheel.
9. The manual lens according to claim 8, wherein The manual lens further includes a first sealing member and a second sealing member. The first sealing member is arranged between the mounting seat and the lens body, and the second sealing member is arranged between the mounting seat and the rotating cover.
10. An imaging device, characterized in that, Comprising the manual lens according to any one of claims 1 - 9.