Ganged optical lens

Abstract

The application discloses a linkage optical lens, which comprises a shell, a power supply unit, a lens unit, a control unit, a driving mechanism and an electronic aperture; the shell is provided with a light path channel, the lens unit is arranged in the light path channel and has an objective lens capable of moving forward and backward, the control unit is electrically connected with the power supply unit, the driving mechanism drives the objective lens to move in a multi-stage mode under the control of the control unit, the electronic aperture has a light transmission unit capable of adjusting a light transmission area, and the control unit controls the light transmission area of the light transmission unit to change in a stepped mode; the stepped change of the light transmission area and the multi-stage movement of the objective lens form a mapping relationship, the mapping relationship is pre-stored in the control unit, the light transmission area decreases when the objective lens approaches the light transmission unit, and the light transmission area increases when the objective lens moves away from the light transmission unit. The linkage optical lens realizes the synchronous linkage of zooming and aperture adjusting through a non-continuous adjusting mode and a segmented adjusting method.

Description

Technical Field

[0001] This invention relates to an optical device for photography, and more particularly to an optical lens for capturing images. Background Technology

[0002] In the field of modern optical imaging technology, optical lenses, as core imaging components, directly determine the key indicators of an imaging system, such as resolution, sharpness, and field of view. They are widely used in numerous fields, including photography, film and television production, security monitoring, consumer electronics, industrial inspection, and medical imaging. With the continuous improvement of image quality requirements across industries and the increasing diversification of application scenarios, the limitations of traditional optical lenses in areas such as zoom adjustment and light flux control are becoming increasingly apparent. Achieving precise coordination between lens zoom and light flux adjustment has become one of the important directions for the development of current optical lens technology.

[0003] The zoom function of an optical lens is primarily achieved by adjusting the relative positions of the lenses, while light throughput control typically relies on adjusting the light-transmitting area of ​​the aperture structure. The coordinated operation of these two is crucial for obtaining stable and clear imaging results. Early optical lenses mostly used manual adjustment, requiring operators to adjust the lens focal length and aperture size separately according to actual imaging needs. This was not only cumbersome and difficult to guarantee in terms of adjustment accuracy, but also unable to adapt to the real-time adjustment requirements of dynamic imaging scenarios. With the integration of electronic technology and automation control technology, automatic zoom and automatic aperture adjustment technologies have gradually become mainstream configurations for optical lenses, greatly improving the ease of operation and adaptability of lenses.

[0004] In the prior art, various technical solutions related to optical lenses with zoom functions have been disclosed. For example, Chinese patent CN202010341112.9 discloses a continuous zoom lens, and Chinese patent CN202110630846.3 discloses a continuous zoom optical lens driving device.

[0005] In the prior art, a variety of optical lens related technical solutions with aperture adjustment function have been disclosed; Chinese patent CN202011544182.0 discloses a variable aperture device and camera module and electronic equipment, and Chinese patent CN202010510666.7 discloses an aperture, aperture control method, camera component and electronic equipment.

[0006] Meanwhile, with the rapid development of smart terminals and digital applications, many optical lenses rely primarily on digital zoom for zooming. However, this type of zooming is not true zooming, and its inherent defects further exacerbate the bottleneck in improving image quality. Unlike optical zoom, which relies on adjusting the physical position of the lens, digital zoom essentially achieves a "zoom" effect by cropping, enlarging, and interpolating pixels in a localized area of ​​the image captured by the imaging sensor. It does not change the actual optical focal length or the amount of light entering the lens. This non-substantial zoom method leads to many insurmountable defects. The most critical defect of digital zoom is the severe loss of image resolution and detail. Because digital zoom enlarges existing image pixels, during zooming, the system crops pixels from the center of the image and interpolates them to fill the pixel gaps in the enlarged image. For example, in a 1080P resolution imaging system, if 2x digital zoom is performed, the actual effective imaging pixels will drop to the 480P level. The remaining pixels are generated by interpolation through algorithms. These interpolated pixels are not the actual results of ambient light signal acquisition, but rather estimates based on neighboring pixels, resulting in severe blurring of image details.

[0007] Although existing technologies have made some progress in zoom and aperture adjustment, many technical problems still need to be solved in practical applications. First, zoom and aperture adjustment in most existing optical lenses are independent operations, lacking an effective coordination mechanism. For example, during zooming, when the lens's focal length changes, its equivalent focal length and light intake requirements also change. However, because aperture adjustment and zoom adjustment are not synchronized, there is often a lag where the aperture only begins to adjust after the zoom lens has moved into position. This lag can cause brief periods of excessive brightness or darkness in the image during zooming, affecting the user's viewing experience. Especially in dynamic tracking imaging scenarios, such fluctuations in image brightness can severely impact the stability of image quality. Secondly, after zooming, the aperture needs to be adjusted to a suitable position to obtain better image quality. Finding the right aperture position requires a high level of expertise from the user, who often spends a lot of time trying countless times to find what they consider the optimal position for image quality, and even then, there's no guarantee that the adjusted position is theoretically optimal. Conversely, the same problem exists when zooming to a suitable position after adjusting the aperture. Furthermore, while combining the existing continuous zoom and continuous aperture adjustments can theoretically achieve synergy, the control module needs to process a large number of position and light intensity signals in real time during continuous adjustment. This can easily lead to control delays and adjustment errors, causing the zoom lens's movement position to not precisely match the aperture's light-transmitting area, thus affecting image sharpness and color reproduction. At the same time, continuous adjustment places extremely high demands on the response speed of the drive mechanism and electronic aperture, increasing the manufacturing cost of the equipment. Moreover, the continuous mechanical movement and electronic adjustments will reduce the equipment's lifespan over long-term use.

[0008] Finally, existing optical lenses lack adaptability to meet the diverse needs of different application scenarios. For example, in industrial inspection, lenses need to be able to quickly switch between different focal lengths to inspect workpieces of different sizes, while also ensuring stable light intake at different focal lengths to guarantee consistent inspection images. In security monitoring, motion capture, and film production, when the lens tracks a moving target, the aperture needs to be adjusted in real time during zooming to avoid changes in brightness in the target image. Existing optical lenses often struggle to simultaneously meet the comprehensive requirements of zoom speed, adjustment accuracy, and imaging stability in these scenarios. They either prioritize zoom speed at the expense of aperture adjustment synchronicity, or prioritize precise aperture adjustment at the expense of zoom response efficiency.

[0009] In summary, existing optical lens technology has many shortcomings in the coordinated control of zoom and aperture adjustments, mainly manifested in imperfect linkage mechanisms, low adjustment precision, slow response speed, poor adaptability, complex structure, and high cost. These problems severely restrict the application of optical lenses in high-precision, dynamic imaging scenarios.

[0010] Therefore, developing an optical lens capable of synchronous, non-continuous adjustment of the objective lens and aperture, with a simple structure and controllable cost, has become a pressing technical challenge for those skilled in the art. The linked optical lens proposed in this application is specifically designed to address the shortcomings of the existing technology. It aims to achieve synchronous and stable linkage between the multi-segment movement of the zoom lens and the stepped light-transmitting area adjustment of the electronic aperture by establishing a precise mapping relationship between the two, thereby improving the imaging quality and adaptability of the optical lens. Summary of the Invention

[0011] The purpose of this invention is to provide a linked optical lens that synchronizes zoom and aperture adjustment. This linked optical lens achieves synchronized zoom and aperture adjustment through a segmented adjustment method using a non-continuous adjustment approach.

[0012] To achieve the above objectives, the present invention provides a linked optical lens, comprising: The housing has a through-hole for light to enter. A power supply unit that provides power; A lens unit is disposed in the optical path channel. The lens unit has an objective lens that can move back and forth. The principal optical axis of the objective lens is axially aligned with the center of the optical path channel. A control unit, which is electrically connected to the power supply unit; A drive mechanism is electrically connected to the control unit and is drively connected to the objective lens. Under the control of the control unit, the drive mechanism drives the objective lens to move in a multi-segment manner. An electronic aperture is positioned directly in front of the objective lens. The electronic aperture has a light-transmitting unit with an adjustable light-transmitting area. The center of the light-transmitting unit is located on the principal optical axis of the objective lens. The light-transmitting unit is electrically connected to the control unit, and the control unit controls the light-transmitting area of ​​the light-transmitting unit to change in a stepped manner. The stepwise change in the light-transmitting area forms a mapping relationship with the multi-segment movement of the objective lens. This mapping relationship is pre-stored in the control unit. When the objective lens moves closer to the light-transmitting unit, the light-transmitting area decreases. When the objective lens moves away from the light-transmitting unit, the light-transmitting area increases.

[0013] Compared with the prior art, the present invention has the following positive and beneficial effects: (1) The driving mechanism of the present invention drives the multi-segment movement of the objective lens, which is easier to achieve precise control than the continuous movement technology in the prior art, reduces the system complexity, and at the same time ensures the positioning accuracy and repeatability of the objective lens movement.

[0014] (2) The stepwise change of the light-transmitting area of ​​the light-transmitting unit of the electronic aperture of the present invention enables the linked optical lens of the present invention to accurately adjust the amount of light and the depth of field range, so that the present invention has excellent imaging quality; at the same time, it is easier to accurately match the zoom with the continuous adjustment of the aperture in the prior art, reducing the complexity of the system.

[0015] (3) The control unit of the present invention realizes synchronous linkage control of objective lens movement and electronic aperture change by pre-stored step-like changes in light-transmitting area and multi-segment movement of objective lens. This linkage control has the following advantages: (a) It can effectively reduce the aberration of the optical system; (b) It maintains the best imaging quality during zooming and aperture adjustment; (c) When shooting macro objects, the light-transmitting area decreases when the objective lens gets closer, which can compensate for the strong light during macro shooting, increase the depth of field range, and ensure that macro objects are clear; when shooting ultra-long-distance objects, the light-transmitting area increases when the objective lens gets further away, which can compensate for the light attenuation during ultra-long-distance shooting, and realize panoramic depth-of-field panoramic shooting; (d) It forms an automatic exposure adjustment mechanism, which greatly improves the automation level and user experience of the linkage optical lens of the present invention; (e) It is particularly suitable for video shooting ultra-macro, ultra-long-distance and continuous focusing scenarios.

[0016] Furthermore, by replacing the lens of existing photographic equipment with the linkage optical lens of this application, the system can automatically optimize the depth of field range according to the shooting distance, realize intelligent adjustment of the depth of field range, optimize the image quality, and obtain the best imaging effect in various shooting scenarios without the need for manual adjustment by the user.

[0017] Furthermore, by attaching the linkage optical lens of this invention to the lens of an existing photographic device, the system can automatically optimize the depth of field range according to the shooting distance, achieve intelligent adjustment of the depth of field range, and optimize the image quality. This eliminates the need for manual adjustment by the user and allows for the best imaging effect in various shooting scenarios. When using this attachment, it is advisable to set the aperture and zoom of the existing photographic device to a fixed value. Preferably, the lens parameters of the existing photographic device are set as follows: aperture adjusted to the maximum value and zoom set to 1x for attachment.

[0018] Preferably, in the linked optical lens of the present invention, the driving mechanism includes an electromagnet that generates a magnetic field when energized and a traction member that can be attracted by the energized electromagnet. The electromagnet is electrically connected to the control unit. The objective lens is fixed on the traction member. The traction member is slidably disposed in the optical path channel and located directly in front of the electromagnet. The objective lens is suspended and centrally disposed in the optical path channel by means of the support of the traction member. The traction member always has a tendency to move away from the electromagnet so that the traction member returns to its original position after the attraction of the electromagnet to the traction member is removed.

[0019] Preferably, in the linkage optical lens of the present invention, the traction member includes a support part and a ball that can be attracted by the electromagnet after being energized. The support part is fixedly connected to the objective lens. The objective lens is suspended and centrally disposed in the optical path channel by means of the support part. The ball is rolled on the support part. The housing has a slide rail, and the ball is rolled and received in the slide rail.

[0020] Preferably, in the linkage optical lens of the present invention, the driving mechanism further includes a helical spring, which is arranged in a stretched state between the housing and the traction member, so that the traction member always has a tendency to move away from the electromagnet.

[0021] Preferably, in the linked optical lens of the present invention, the light-transmitting unit includes a plurality of interlocking and concentrically arranged annular liquid crystal ring apertures, the liquid crystal ring aperture located at the center is a solid structure, and the liquid crystal ring apertures are independently electrically connected to the control unit; the liquid crystal ring apertures are light-transmitting when energized, and are opaque when de-energized. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of the objective lens of the linkage optical lens of the present invention in its initial state.

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the objective lens of the linkage optical lens of the present invention at its maximum stroke.

[0024] Figure 3 This is a schematic diagram of an embodiment of the connection between the drive mechanism and the objective lens of the present invention.

[0025] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure.

[0026] Figure 5 This is a schematic diagram of an embodiment of the light-transmitting unit of the electronic aperture of the present invention.

[0027] Figure 6 yes Figure 5A schematic diagram showing the initial light-transmitting area.

[0028] Figure 7 yes Figure 5 A schematic diagram showing the state at the maximum light-transmitting area.

[0029] Figure 8 yes Figure 5 A schematic diagram of the light-transmitting area in the second segment.

[0030] Figure 9 yes Figure 5 A schematic diagram of the light-transmitting area in the third segment. Detailed Implementation

[0031] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0032] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0033] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0035] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0036] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0037] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0038] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] In view of the deficiencies in the existing technology, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a technology that could solve the deficiencies in the existing technology. After continuous research, design, and repeated prototype production and improvement, the present invention, which has practical value, was finally created.

[0041] like Figures 1-7 As shown, the linkage optical lens 100 of the present invention includes a housing, a power supply unit for providing power, a lens unit, a control unit, a drive mechanism, and an electronic aperture. The following continues in conjunction with... Figures 1-7 The linkage optical lens 100 of the present invention will be described in further detail as follows: like Figure 1 and Figure 2As shown, the housing 1 of the linkage optical lens 100 of the present invention has a through-hole optical path channel 11 for light to enter. The housing 1 serves as the supporting structure for the entire linkage optical lens 100, and the through-hole optical path channel 11 ensures a stable light transmission path. The direct through-hole optical path channel 11 within the housing 1 effectively prevents external stray light interference, ensuring image quality. Furthermore, it provides a precise positioning reference for internal optical components, ensuring the consistency of the optical axes of each optical component. The power supply unit 2 of the present invention provides a stable and reliable power supply to the entire system, ensuring the normal operation of the drive mechanism, control unit, and electronic aperture. The stable output of the power supply unit 2 is the foundation for ensuring precise lens control and long-term reliable operation. The lens unit of the present invention is disposed in the optical path channel 11. The lens unit has a movable objective lens 3, and the principal optical axis of the objective lens 3 is axially coincident with the center of the optical path channel 11. The axial coincidence of the principal optical axis with the center of the optical path channel 11 ensures the geometric accuracy of the imaging. The control unit 4 of the present invention is electrically connected to the power supply unit 2. The driving mechanism 5 of this invention is electrically connected to the control unit 4, and the driving mechanism 5 is drively connected to the objective lens 2. Under the control of the control unit 4, the driving mechanism 5 drives the objective lens 2 to move in a multi-stage manner. The electronic aperture of this invention is positioned directly in front of the objective lens 2. The electronic aperture has a light-transmitting unit 6 with an adjustable light-transmitting area. The center of the light-transmitting unit 6 is located on the principal optical axis of the objective lens 3. The light-transmitting unit 6 is electrically connected to the control unit 4, and the control unit 4 controls the light-transmitting area of ​​the light-transmitting unit 6 to change in a stepped manner. The stepped change in the light-transmitting area of ​​the light-transmitting unit 6 of this invention forms a mapping relationship with the multi-stage movement of the objective lens 3. This mapping relationship is pre-stored in the control unit 4. When the objective lens 3 moves closer to the light-transmitting unit 6, the light-transmitting area decreases; when the objective lens 3 moves away from the light-transmitting unit 6, the light-transmitting area increases. This invention achieves synchronous linkage control between the movement of the objective lens 3 and the change of the electronic aperture by pre-storing the stepwise change of the light-transmitting area of ​​the light-transmitting unit 6 and the multi-segment movement of the objective lens 3. This effectively improves the imaging quality and adaptability of the optical lens and also solves the shortcomings of the existing technology in continuous zoom or continuous aperture adjustment.

[0042] like Figures 1-5 As shown, the multi-segment movement of the objective lens 3 of this invention can be performed in equal-interval movement, non-equal-interval movement, or a combination of partially equal-interval movement and non-equal-interval movement. Definition: The initial position of the objective lens 3 is the position closest to the light-transmitting unit 6 (e.g., ...). Figure 1 (As shown in the state), this closest position is used as the marker point for the first segment, and its movement distance is 0, moving away from the light-transmitting unit 6. The maximum travel of the objective lens 3 is L (as shown in the state). Figure 2(As shown in the diagram); taking the six-segment movement of objective lens 3 as an example: (W1) The objective lens moves at equal intervals, with a maximum travel of L, divided into six segments, thus having five equal intervals, each interval being L / 5; the movement distances of the six segments are as follows: first segment movement distance 0, second segment movement distance L / 5, third segment movement distance 2L / 5, fourth segment movement distance 3L / 5, fifth segment movement distance 4L / 5, sixth segment movement distance L. In the equal interval movement of the objective lens, the first segment movement distance must be 0, and the last segment movement distance must be the maximum travel L of objective lens 3. (W2) The objective lens moves at non-equal intervals, with a maximum travel of L, divided into six segments, thus having five intervals, the movement distances of the six segments can be as follows: first segment movement distance 0, second segment movement distance L / 9, third segment movement distance 3L / 8, fourth segment movement distance 5L / 7, fifth segment movement distance 5L / 6, sixth segment movement distance L. In non-equal spacing movement, the first segment's movement distance must be 0, and the last segment's movement distance must be the maximum travel distance L of objective lens 3; the settings of other segments can be determined by those skilled in the art according to actual needs; if it is necessary to focus on shooting super macro and macro images, the intervals of the first few segments can be set smaller; if it is necessary to focus on shooting long-distance and ultra-long-distance images, the intervals of the later segments can be set smaller; if it is necessary to focus on shooting medium-distance images such as people and indoor scenes, the intervals of the middle segments can be set smaller. (W3) Combining equal spacing and non-equal spacing objective lenses, the maximum travel distance is L, divided into six segments, thus having five intervals. The movement distances of the six segments can be as follows: first segment movement distance 0, second segment movement distance L / 5, third segment movement distance 2L / 5, fourth segment movement distance 5L / 7, fifth segment movement distance 6L / 7, and sixth segment movement distance L. In the combination of equidistant and non-equidistant spacing, the first segment's movement distance must be 0, and the last segment's movement distance must be the maximum travel L of objective lens 3. The settings for other segments can be determined by those skilled in the art based on actual needs. For example, if it is necessary to focus on shooting close-up objects and extreme close-up images, the intervals of the first few segments can be set to equidistant; if it is necessary to focus on shooting distant and panoramic images, the intervals of the latter few segments can be set to equidistant. The above explanation only uses the six-segment movement of objective lens 3 as an example. Other segment movements of objective lens 3 can be deduced similarly based on the above six-segment movement. Those skilled in the art can derive these derivations without any creative effort based on actual needs, and will not be elaborated further here.

[0043] like Figures 1-5 As shown, specifically, in the initial state of the linkage optical lens 100 of the present invention, the objective lens 3 is located at the first segment position ( Figure 1(As shown in the diagram), that is, the objective lens 3 is closest to the light-transmitting unit 6. In actual use, for example: at a certain moment, the objective lens 3 is used at the second position, and at the next moment it needs to be used at the fifth position, the objective lens 3 moves directly from the second position to the fifth position, without stopping at the third and fourth positions along the way. Similarly: at a certain moment, the objective lens 3 is used at the fifth position, and at the next moment it needs to be used at the first position, the objective lens 3 moves directly from the fifth position to the first position, without stopping at the fourth, third, and second positions along the way. That is, when the objective lens 3 of this application needs to be moved from one position to another during use, it does not stop at any of the intermediate positions.

[0044] The step-like change in the light-transmitting area of ​​the light-transmitting unit 6 of the present invention forms a mapping relationship with the multi-segment movement of the objective lens 3. This mapping should be understood as the number of segments of the objective lens 3 being the same as the number of steps in the light-transmitting area. That is, when the objective lens 3 moves one segment, the light-transmitting area changes step-like once.

[0045] like Figures 1-9 As shown, continuing from the above, taking the six-segment movement of objective lens 3 as an example, we will explain the step-like change in the light-transmitting area of ​​the light-transmitting unit 6 of the present invention, thereby illustrating the mapping relationship between the two. The step-like change in the light-transmitting area of ​​the light-transmitting unit 6 of the electronic aperture of the present invention can be a change of equal area, a change of non-equal area, or a combination of partially equal and non-equal area changes. Definition: The initial position of objective lens 3 is the position closest to the light-transmitting unit 6 (e.g., ...). Figure 1 (As shown in the diagram), in this initial state, the moving distance of objective lens 3 is 0, and the initial light-transmitting area S of light-transmitting unit 6 is... min (like Figure 6 (As shown in the diagram); objective lens 3 moves away from the light-transmitting unit 6, the maximum travel of objective lens 3 is L, and the maximum light-transmitting area of ​​light-transmitting unit 6 is S. max (like Figure 7 (as shown in the diagram); maximum light-transmitting area S max With the initial light-transmitting area S min The difference is S, that is, S = S max -S min (T1) The light-transmitting area of ​​the light-transmitting unit changes by an equal amount of area. The six-segment movement of the mapping objective lens 3 should result in five equal changes in the light-transmitting area, therefore the area of ​​each interval is S / 5; the light-transmitting areas of the six stepped changes in the light-transmitting unit 6 are as follows: the light-transmitting area of ​​the first segment S... min The second segment's light-transmitting area (S) min + S / 5), the third segment's light-transmitting area (S min + 2S / 5), fourth segment light transmission area (S min+ 3S / 5), fifth segment light transmission area (S min +4S / 5), sixth segment light transmission area S max In a change of area where the light-transmitting area is constant, the light-transmitting area of ​​the first segment must be S. min The light-transmitting area of ​​the last segment must be equal to the maximum light-transmitting area S of the light-transmitting unit. max (T2) The light-transmitting area of ​​the light-transmitting unit 6 is not a uniform change in area. Due to the six-segment movement of the mapping objective lens 3, the light-transmitting area should have five changes in area. The six stepped changes in the light-transmitting area of ​​the light-transmitting unit 6 can be respectively: the light-transmitting area S of the first segment... min The second segment's light-transmitting area (S) min + S / 9), the third segment's light-transmitting area (S min + 3S / 8), fourth segment light transmission area (S min + 5S / 7), fifth segment light transmission area (S min +5S / 6), sixth segment light transmission area S max In cases where the light-transmitting area changes in a non-uniform manner, the light-transmitting area of ​​the first segment must be S. min The light-transmitting area of ​​the last segment must be equal to the maximum light-transmitting area S of the light-transmitting unit. max Other segments can be set according to the actual needs of those skilled in the art; if it is necessary to focus on shooting super macro and macro images, the interval of the first few segments can be set smaller; if it is necessary to focus on shooting long-distance and ultra-long-distance images, the interval of the later segments can be set smaller; if it is necessary to focus on shooting medium-distance images such as people and indoors, the interval of the middle segments can be set smaller. (T3) The light-transmitting area of ​​the light-transmitting unit 6 is combined with the equal area change and non-equal area change. The six-segment movement of the objective lens 3 should have five area changes. The light-transmitting area of ​​the six-step change of the light-transmitting unit 6 can be as follows: the light-transmitting area S of the first segment min The second segment's light-transmitting area (S) min + S / 5), the third segment's light-transmitting area (S min + 2S / 5), fourth segment light transmission area (S min + 5S / 7), fifth segment light transmission area (S min +6S / 7), sixth segment light transmission area S max In a combination of equal and non-equal area changes in light-transmitting area, the light-transmitting area of ​​the first segment must be S. min The light-transmitting area of ​​the last segment must be equal to the maximum light-transmitting area S of the light-transmitting unit. maxOther segment settings can be configured according to the actual needs of those skilled in the art. For example, if it is necessary to focus on shooting close-up objects and close-up images, the intervals of the first few segments can be set to equal spacing; if it is necessary to focus on shooting distant and panoramic images, the intervals of the latter few segments can be set to equal spacing. The above is only an example of the light-transmitting area of ​​the light-transmitting unit 6 changing in a six-segment stepped manner. Other stepped changes in the light-transmitting area of ​​the light-transmitting unit 6 can be deduced by analogy based on the above six-segment method. Those skilled in the art can derive the above derivation method without any creative effort based on the actual needs of those skilled in the art, and will not be elaborated here.

[0046] It is worth noting that the above description illustrates the implementation of the six-segment objective lens 3 displacement and the stepped change in the light-transmitting area of ​​the light-transmitting unit 6. Specifically, the six segments of the (W1) objective lens's equidistant movement can map to the six segments of the (T1) light-transmitting unit's equal area change, or the six segments of the (T2) light-transmitting unit's non-equidistant area change, or the six segments of the (T3) light-transmitting unit's combined equal and non-equidistant area changes. Similarly, the six segments of the (W2) objective lens's non-equidistant movement can map to the six segments of the (T1) light-transmitting unit's equal area change, or the six segments of the (T2) light-transmitting unit's non-equidistant area change, or the six segments of the (T3) light-transmitting unit's combined equal and non-equidistant area changes. The six segments of the objective lens (W3), combining equidistant and non-equidistant spacing, can map to the six segments of the equal area change of the light-transmitting area of ​​the (T1) light-transmitting unit, or to the six segments of the non-equidistant area change of the light-transmitting area of ​​the (T2) light-transmitting unit, or to the six segments of the combination of equal and non-equidistant area changes of the light-transmitting area of ​​the (T3) light-transmitting unit. The linked optical lens 100 of this invention achieves synchronous linkage between zoom and aperture adjustment through a segmented adjustment method using a discontinuous adjustment mechanism. The above is merely an example of the mapping relationship between the movement mode of the six-segment objective lens 3 and the stepwise change of the light-transmitting area of ​​the light-transmitting unit 6. Other segment mapping relationships can be selected by those skilled in the art based on actual needs without any new creative effort; for example, choosing (W1) to map to (T1), or (W2) to map to (T1), or (W3) to map to (T1), etc., which will not be elaborated upon here.

[0047] like Figures 1-4As shown, in a preferred embodiment, in the linkage optical lens 100 of the present invention, the driving mechanism 5 includes an electromagnet 51 that generates a magnetic field when energized and a traction member 52 that can be attracted by the energized electromagnet 51. The traction member 52 is made of magnetic material. The electromagnet 51 of the present invention is electrically connected to the control unit 4. The objective lens 3 of the present invention is fixed on the traction member 52, which is slidably disposed in the optical path channel 11 and located directly in front of the electromagnet 51. The objective lens 3 is suspended and centrally disposed in the optical path channel 11 by means of the support of the traction member 52. The traction member 52 always tends to move away from the electromagnet 51 so that the traction member 52 returns to its original position after the attraction of the electromagnet 51 to the traction member 52 is removed. The magnitude of the attraction force of the electromagnet 51 to the traction member 52 can be adjusted by adjusting the current of the electromagnet 51 by the control unit 4, thereby adjusting the movement segment of the objective lens 3. When the objective lens 3 is at each segment, the attraction force of the electromagnet 51 on the traction member 52 is equal to the traction force of the traction member 52 moving away from the electromagnet 51. The attraction force and the traction force are equal in magnitude and opposite in direction, so the objective lens 3 is stationary at that segment. After the current to the electromagnet 51 is removed, the traction member 52 returns to its initial position under the action of its traction force. Figure 1 (The state shown).

[0048] like Figures 1-2 As shown, this invention applies current to the electromagnet 51 according to a pre-stored mapping relationship, causing the electromagnet to attract the traction component 52, which synchronously moves the objective lens 3 to the corresponding segment. This driving mechanism 5 is simpler and more precise than existing linear driving mechanisms such as voice coil motors and stepper motors. Specifically, the traction component 52 of this invention is preferably a hollow structure to reduce its mass and further improve the sensitivity of the electromagnet 51 in attracting the traction component 52, thereby improving the accuracy of the objective lens 3 reaching each segment.

[0049] like Figures 1-4 As shown, preferably, in the linked optical lens 100 of the present invention, the traction member 52 includes a support portion 521 and a ball bearing 522 that can be attracted by the electromagnet 51 after being energized. The support portion 521 is fixedly connected to the objective lens 3. The objective lens 3 is suspended and centrally positioned in the optical path channel 11 by means of the support portion 521. The ball bearing 522 is rolled on the support portion 521. The housing 1 has a slide rail 12 in which the ball bearing 522 is rolled and received. More specifically, the ball bearing 522 is a hollow spherical structure of magnetic material; the support portion 521 is preferably a lightweight plastic steel structure. The support portion 521 provides a universal joint to the area near the equator of the ball bearing 522, so that the north and south poles of the ball bearing 522 always roll within the slide rail 12. This ensures that the ball bearing 522 rolls relative to the support portion 521 and that the lens 3 can move with the rolling of the ball bearing 522. The structure is simple and easy to use.

[0050] like Figures 1-4 As shown, more specifically, in the linkage optical lens 100 of the present invention, the driving mechanism 5 further includes a helical spring 53. The helical spring 53 is arranged in a stretched state between the housing 1 and the traction member 52, so that the traction member 52 always tends to move away from the electromagnet 51. Specifically, the first end of the helical spring 53 is fixed to the housing 1, and the second end of the helical spring 53 is connected to the support part 521. More specifically, the housing 1 is also provided with a movable groove 13 for the helical spring 53 to extend and retract. The movable groove is connected to the slide 12 at the corresponding position, so that the support part 521 can extend into it and slide synchronously with the ball 522, preventing obstruction of the support part 521 and thus limiting the rolling of the ball 522. A flexible anti-collision block 14 is provided at the starting end of the slide 12, and a flexible anti-collision block 15 is provided at the starting end of the movable groove 13 away from the slide 12. Anti-collision blocks 14 and 15 can effectively prevent ball 522 from moving to the starting position. Figure 1 (as shown in the state) and the maximum travel point ( Figure 2 In the state shown, a rigid contact rebound phenomenon occurs; in the initial state, that is, when the objective lens 3 moves 0 distance, the ball 522 and the anti-collision block 14 at the starting end of the slide 12 abut against each other under the tension of the coil spring 53; when the ball 522 is at its maximum stroke, the support part 521 abuts against the anti-collision block 15. The maximum stroke of the ball 522 is the vertical distance between the two anti-collision blocks 14 and 15, and the maximum stroke of the ball 522 is also the maximum stroke of the objective lens 3.

[0051] Figures 5-9 As shown, preferably, in the linked optical lens 100 of the present invention, the light-transmitting unit 6 includes a plurality of interlocking and concentrically arranged annular liquid crystal ring apertures 61, with the central liquid crystal ring aperture 61 being a solid structure. Each of the liquid crystal ring apertures 61 is independently and electrically connected to the control unit 4. When energized, the liquid crystal ring aperture 61 is light-transmitting; when de-energized, it is opaque. Specifically, the liquid crystal ring apertures 61 are connected in parallel and have independent control switches. The control unit 4 can control these switches to determine whether the corresponding liquid crystal ring aperture 61 is energized, thereby adjusting the light-transmitting area.

[0052] like Figure 1 , Figure 2 and Figures 5-9 As shown, this invention adjusts the light-transmitting area of ​​the light-transmitting unit 6 to vary in a stepped manner by controlling the number of liquid crystal rings 61. Specifically, by sequentially energizing the liquid crystal rings 61 located at the center, the stepped change in the light-transmitting area of ​​the light-transmitting unit 6 can be achieved. Continuing from the above, the stepped change in the light-transmitting area of ​​a six-segment light-transmitting unit 6 will be used as an example for explanation. Figure 5The diagram illustrates the structure of a liquid crystal ring 61 with six ring-shaped structures. For ease of description, the six liquid crystal rings 61 from the inside out are labeled 61a, 61b, 61c, 61d, 61e, and 61f, respectively. The six segments of light-transmitting area change in a stepped manner. The first segment of light-transmitting area is the liquid crystal ring 61a at the center of the energized area. The area of ​​this liquid crystal ring 61a is the initial light-transmitting area S mentioned above. min ( Figure 6 (As shown in the diagram); the second segment's light-transmitting area, with liquid crystal rings 61a and 61b simultaneously powered; the third segment's light-transmitting area, with liquid crystal rings 61a, 61b, and 61c simultaneously powered; the fourth segment's light-transmitting area, with liquid crystal rings 61a, 61b, 61c, and 61d simultaneously powered; the fifth segment's light-transmitting area, with liquid crystal rings 61a, 61b, 61c, 61d, and 61e simultaneously powered; the sixth segment's light-transmitting area, with liquid crystal rings 61a, 61b, 61c, 61d, 61e, and 61f simultaneously powered, the sum of the areas of these liquid crystal rings 61a, 61b, 61c, 61d, 61e, and 61f is the aforementioned maximum light-transmitting area Smax. Figure 7 (As shown in the view). To intuitively understand the step-like change in the light-transmitting area from the state of the view, Figure 8 The diagram illustrates the light-transmitting area of ​​the second segment mentioned above. Figure 9 The diagram illustrates the light-transmitting area of ​​the third segment mentioned above.

[0053] The linkage optical lens 100 of this invention achieves synchronous linkage between zoom and aperture adjustment through a non-continuous adjustment method and a segmented adjustment approach, which has the following positive and beneficial effects: (1) The driving mechanism of the present invention drives the objective lens 3 to move in multiple stages, which is easier to achieve precise control than the continuous movement technology in the prior art, reduces the system complexity, and at the same time ensures the positioning accuracy and repeatability of the objective lens movement.

[0054] (2) The stepwise change in the light-transmitting area of ​​the light-transmitting unit 6 of the electronic aperture of the present invention enables the linkage optical lens 100 of the present invention to accurately adjust the amount of light and the depth of field range, so that the present invention has excellent imaging quality; at the same time, it is easier to accurately match the zoom with the continuous adjustment aperture in the prior art, reducing the system complexity.

[0055] (3) The control unit 4 of the present invention realizes the synchronous linkage control of the movement of the objective lens 3 and the change of the electronic aperture by pre-stored the step-like change of the light-transmitting area and the multi-segment movement of the objective lens. This linkage control has the following advantages: (a) It can effectively reduce the aberration of the optical system; (b) It maintains the best imaging quality during zooming and aperture adjustment; (c) When shooting macro objects, the light-transmitting area decreases when the objective lens gets closer, which can compensate for the strong light during macro shooting, increase the depth of field range, and ensure that macro objects are clear; when shooting ultra-long-distance objects, the light-transmitting area increases when the objective lens gets further away, which can compensate for the light attenuation during ultra-long-distance shooting, and realize panoramic depth-of-field panoramic shooting; (d) It forms an automatic exposure adjustment mechanism, which greatly improves the automation level and user experience of the linkage optical lens of the present invention; (e) It is particularly suitable for video shooting ultra-macro, ultra-long-distance and continuous focusing scenarios.

[0056] Furthermore, by replacing the lens of existing photographic equipment with the linkage optical lens 100 of this application, the system can automatically optimize the depth of field range according to the shooting distance, realize intelligent adjustment of the depth of field range, optimize the image quality, and obtain the best imaging effect in various shooting scenarios without the need for manual adjustment by the user.

[0057] Furthermore, by mounting the linkage optical lens 100 of this invention onto the lens of an existing photographic device, the system can automatically optimize the depth of field range according to the shooting distance, achieve intelligent adjustment of the depth of field range, and optimize the image quality. This eliminates the need for manual adjustment by the user and allows for optimal imaging results in various shooting scenarios. When using this assembly, it is advisable to set the aperture and zoom of the existing photographic device to a fixed value. Preferably, the lens parameters of the existing photographic device are set as follows: aperture adjusted to the maximum value and zoom set to 1x for assembly.

[0058] The present invention also includes an adapter bayonet structure 7 on the housing 1, which allows for quick connection to the lens clips of existing photographic equipment, enabling rapid replacement of existing lenses. Furthermore, the adapter bayonet structure 7 allows for quick mounting of the present invention onto the lenses of existing photographic equipment.

[0059] Furthermore, the liquid crystal ring 61, which is transparent when energized and opaque when de-energized, and the working principle of the electromagnet 51 involved in this invention are all well known to those skilled in the art, and will not be described in detail here.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, the embodiments disclosed above are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Therefore, equivalent variations made within the scope of the claims are still within the scope of the present invention.

Claims

1. A linked optical lens, characterized in that, include: The housing has a through-hole for light to enter. A power supply unit that provides power; A lens unit is disposed in the optical path channel. The lens unit has an objective lens that can move back and forth. The principal optical axis of the objective lens is axially aligned with the center of the optical path channel. A control unit, which is electrically connected to the power supply unit; A drive mechanism is electrically connected to the control unit and is drively connected to the objective lens. Under the control of the control unit, the drive mechanism drives the objective lens to move in a multi-segment manner. An electronic aperture is positioned directly in front of the objective lens. The electronic aperture has a light-transmitting unit with an adjustable light-transmitting area. The center of the light-transmitting unit is located on the principal optical axis of the objective lens. The light-transmitting unit is electrically connected to the control unit, and the control unit controls the light-transmitting area of ​​the light-transmitting unit to change in a stepped manner. The stepwise change in the light-transmitting area forms a mapping relationship with the multi-segment movement of the objective lens. This mapping relationship is pre-stored in the control unit. When the objective lens moves closer to the light-transmitting unit, the light-transmitting area decreases. When the objective lens moves away from the light-transmitting unit, the light-transmitting area increases.

2. The linked optical lens according to claim 1, characterized in that, The driving mechanism includes an electromagnet that generates a magnetic field when energized and a traction member that can be attracted by the energized electromagnet. The electromagnet is electrically connected to the control unit. The objective lens is fixed to the traction member. The traction member is slidably disposed in the optical path channel and located directly in front of the electromagnet. The objective lens is suspended and centrally disposed in the optical path channel by means of the support of the traction member. The traction member always has a tendency to move away from the electromagnet so that the traction member returns to its original position after the attraction of the electromagnet to the traction member is removed.

3. The linked optical lens according to claim 2, characterized in that, The traction component includes a support portion and a ball bearing that can be attracted by the electromagnet when energized. The support portion is fixedly connected to the objective lens. The objective lens is suspended and centrally positioned in the optical path channel by means of the support portion. The ball bearing is rolled on the support portion. The housing has a slide rail, and the ball bearing is rolled and received in the slide rail.

4. The linked optical lens according to claim 2, characterized in that, The drive mechanism also includes a helical spring, which is stretched and disposed between the housing and the traction member. The helical spring causes the traction member to always tend to move away from the electromagnet.

5. The linked optical lens according to claim 1, characterized in that, The light-transmitting unit includes multiple concentrically arranged, interlocking liquid crystal rings. The central liquid crystal ring is solid. Each liquid crystal ring is independently electrically connected to the control unit. When powered on, the liquid crystal ring is light-transmitting; when powered off, it is opaque.

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