A lens rotation and telescopic device and photographic equipment

Abstract

This utility model discloses a lens rotation and telescopic device, relating to the field of photographic technology. The device includes an optical lens assembly, a rotating sleeve, and a lens telescopic component. An axial telescopic channel is provided inside the lens telescopic component. The optical lens assembly is placed in the telescopic channel and connected to the lens telescopic component. The rotating sleeve is sleeved on the lens telescopic component, and the rotating sleeve is helically driven to the optical lens assembly through the lens telescopic component. When the rotating sleeve is twisted, the optical lens assembly extends or retracts along the telescopic channel. This utility model also provides a photographic device that utilizes the lens rotation and telescopic device described above. The advantages of this utility model are that the optical lens assembly is easy to zoom, easy to modify, and can fully utilize existing optical lens assembly resources.

Description

Technical Field

[0001] This utility model relates to the field of photography technology, and in particular to a lens rotation and telescopic device and a photographic equipment. Background Technology

[0002] In existing technologies, an optical lens group is typically set up, which contains multiple lenses. A corresponding displacement device is set for each lens in the lens group, and zoom is achieved by changing the relative position of the different lenses in the optical lens group.

[0003] When such an optical lens assembly setup and its corresponding zoom method are applied to specific photographic equipment, the design of each lens element in the optical lens assembly must take into account factors such as focal length, field of view, aperture, distortion, and resolution, which affect the focal length of the optical lens assembly. The displacement device for each lens element also requires high displacement accuracy. The design of the entire optical lens assembly is very difficult and the manufacturing cost is very high. Once the design and manufacturing are completed, the zoom range of the lens assembly is determined. If the user needs a wider zoom range or other zoom effects, it is necessary to redesign, manufacture, and replace the entire optical lens assembly or photographic equipment. This is not only costly but also fails to make full use of existing lens resources. Utility Model Content

[0004] The main objective of this invention is to provide a lens rotation and telescopic device that allows for convenient zooming and can utilize existing optical lens group resources.

[0005] To achieve the above objectives, this utility model provides a lens rotation and telescopic device, which includes an optical lens assembly, a rotating sleeve, and a lens telescopic component; The lens telescopic assembly has an axial telescopic channel inside. The optical lens group is placed in the telescopic channel and connected to the lens telescopic assembly. The rotating sleeve is sleeved on the lens telescopic assembly, and the rotating sleeve is screwed to the optical lens group through the lens telescopic assembly. When the rotating sleeve is twisted, the optical lens group extends or retracts along the telescopic channel.

[0006] Optionally, the lens telescopic assembly includes a lens bracket and a lens telescopic guide tube; the lens bracket is fitted onto the optical lens group, the lens telescopic guide tube is fixedly connected to the rotating sleeve, and the lens bracket and the lens telescopic guide tube are driven by a screw.

[0007] Optionally, the lens telescopic assembly also includes a transmission protrusion, which is fixedly mounted radially on the lens bracket. A spiral guide groove is formed on the lens telescopic guide tube, and the transmission protrusion engages with the spiral guide groove.

[0008] Optionally, the transmission protrusion is columnar, protruding radially from the circumference of the lens holder, and the spiral guide groove extends spirally in both the axial and circumferential directions, with the transmission protrusion movably embedded in the spiral guide groove.

[0009] Optionally, the transmission protrusion is threaded, the spiral guide groove is threaded, and the transmission protrusion meshes with the spiral guide groove.

[0010] Optionally, it also includes a lens mount, a rotation sensor, and a fine-tuning sleeve; the lens mount is fitted onto the lens support, the rotation sensor is fixedly mounted on the lens mount and interacts with the optical lens group, the fine-tuning sleeve is movably fitted onto the lens support, and the rotation sensor is used to sense the rotation angle of the fine-tuning sleeve.

[0011] Optionally, fine-tuning serrations are evenly arranged on the inner wall of the fine-tuning sleeve, and the fine-tuning serrations are fixedly arranged on the inner wall of the fine-tuning sleeve in the circumferential direction.

[0012] Optionally, the rotation sensor is a photoelectric sensor. When the fine-tuning sleeve is twisted, the fine-tuning serrations block or open the sensing light path of the photoelectric sensor.

[0013] Optionally, the lens telescopic assembly also includes a telescopic guide shaft; a telescopic guide groove adapted to the telescopic guide shaft is formed axially on the outer peripheral surface of the lens bracket, the front end of the telescopic guide shaft is fixedly connected to the lens mount, and its rear end is inserted into the telescopic guide groove and movably connected to the lens bracket.

[0014] This utility model also provides a photographic device that uses the lens rotation and telescopic device described above.

[0015] The beneficial effects of this utility model are as follows: 1. Convenient Zooming: Because the rotating sleeve is connected to the optical lens group via a helical transmission through the lens telescopic assembly, the user only needs to twist the sleeve. The lens telescopic assembly converts the rotational motion of the sleeve into linear motion, pushing the optical lens group to extend or retract a certain distance, thus changing the actual distance between the optical lens group and the subject to achieve zooming. During this zooming process, the user only needs to gently twist the sleeve; by changing the direction and angle of the twist, the user can correspondingly change the specific extension / retraction depth of the optical lens group, thereby changing the focal length. The zooming process is convenient and highly controllable.

[0016] 2. Easy to modify and fully utilize: This utility model achieves zoom by setting a rotating sleeve and lens telescopic assembly, which helps to broaden the zoom range of existing optical lens groups. The zoom structure does not require changing the parameter settings of each specific lens in the optical lens group, nor does it require dismantling and redesigning the existing optical lens group, so the existing optical lens group resources can be fully utilized. Attached Figure Description

[0017] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is an exploded view of the photographic equipment provided in the specific implementation method.

[0018] Figure 2 yes Figure 1 The first enlarged view of the area.

[0019] Figure 3 yes Figure 1 The second enlarged view of the area.

[0020] Figure 4 A schematic diagram of the internal structure of a partial structure of a photographic device is provided in the specific implementation embodiment.

[0021] Figure 5 yes Figure 4 A magnified view of part V1 in the middle.

[0022] Figure 6 This is a schematic diagram of the internal structure of the optical lens assembly in the retracted state in the specific embodiment of the photographic device.

[0023] Figure 7 This is a schematic diagram of the internal structure of the optical lens assembly in the photographic device provided in the specific implementation method, presented in an elongated state.

[0024] exist Figure 1-7 The attached icon is labeled as follows: 1. Front shell; 2. Lens mount; 3. Optical lens assembly; 4. Rotating sleeve; 5. Lens telescopic assembly; 51. Lens bracket; 52. Lens telescopic guide tube; 53. Transmission protrusion; 54. Telescopic guide shaft; 511. Mounting hole; 512. Telescopic guide groove; 521. Spiral guide groove; 541. Stroke detection sensor; 6. Rotation sensor; 7. Fine-tuning sleeve; 71. Fine-tuning saw teeth. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0026] Please see Figure 1 In this specific embodiment, a photographic device is provided, which uses a lens rotation and telescopic device. In this specific embodiment, the lens rotation and telescopic device includes a front shell 1, a lens mount 2, an optical lens group 3, a rotating sleeve 4, a lens telescopic assembly 5, a rotation sensor 6, and a fine-tuning sleeve 7. The front housing 1 has an internal storage space where the internal circuitry, control chip, and communication module of the camera device are housed. A lens channel is opened at the front end of the front housing 1, through which the optical lens assembly 3 and other structures can be connected to or detached from the front housing 1. The lens mount 2 is located at the front end of the front housing 1 and is detachably connected to it. Technicians can utilize common wedge-slot structures found in existing technologies to achieve the connection and detachment of the lens mount 2 from the front housing 1. The lens mount 2 also has a lens channel; when connected to the front housing 1, the axes of the lens channels overlap, and the two are coaxially connected.

[0027] Please see Figure 2 In this specific embodiment, the lens telescopic assembly 5 includes a lens bracket 51, which is generally in the shape of a straight cylindrical column. The optical lens group 3 is adapted to the lens bracket 51, and the lens bracket 51 is sleeved on the optical lens group 3. The optical lens group 3 is connected to the lens bracket 51 as a whole, and the lens bracket 51 covers the optical lens group 3. The lens bracket 51 provides structural protection for the optical lens group 3. The transmission of other zoom structures to the optical lens group 3 is all performed on the lens bracket 51. The optical lens group 3 is telescopically moved through the lens bracket 51. The optical lens group 3 is used as a complete whole. Technicians do not need to disassemble the optical lens group 3, do not need to redesign the parameters of each lens inside the optical lens group 3, and the structure of the optical lens group 3 itself will not be damaged.

[0028] Please see Figure 2 In this specific embodiment, the lens telescopic assembly 5 further includes a lens telescopic guide cylinder 52 and a transmission protrusion 53. An axial telescopic channel is provided inside the lens telescopic guide cylinder 52. The optical lens assembly 3 is placed in the telescopic channel via a lens bracket 51. A rotating sleeve 4 is sleeved onto the lens telescopic guide cylinder 52. The lens telescopic guide cylinder 52 is fixedly connected to the rotating sleeve 4 by several screws. When the user twists the rotating sleeve 4, the lens telescopic guide cylinder 52 rotates together with the rotating sleeve 4. A spiral guide groove 521 is provided on the lens telescopic guide cylinder 52. The transmission protrusion 53 is radially fixedly disposed on the lens bracket 51, and the transmission protrusion 53 engages with the spiral guide groove 521. The width of the transmission protrusion 53 is set to be slightly smaller than the width of the spiral guide groove 521, so that the transmission protrusion 53 can be embedded in the spiral guide groove 521 and slide relative to the spiral guide groove 521. When the user twists the rotating sleeve 4 and the lens telescopic guide cylinder 52 rotates together with the rotating sleeve 4, the transmission protrusion 53 embedded in the spiral guide groove 521 is squeezed and guided by the spiral guide groove 521, converting the rotational motion of the lens telescopic guide cylinder 52 into the linear motion of the lens bracket 51, thereby driving the optical lens assembly 3 to extend and retract as a whole.

[0029] Please see Figure 2 , 4-5. In this specific embodiment, the transmission protrusion 53 is columnar, and three transmission protrusions 53 are provided. Three mounting holes 511 are opened on the outer peripheral surface of the lens bracket 51. Each mounting hole 511 is radially opened, and the three mounting holes 511 are evenly spaced. The three transmission protrusions 53 are respectively embedded in the three mounting holes 511 and are fixedly connected to the lens bracket 51 through the mounting holes 511. The top of each transmission protrusion 53 protrudes from the peripheral surface of the lens bracket 51. In conjunction with the three transmission protrusions 53, in this specific embodiment, three spiral guide grooves 521 are opened on the lens telescopic guide tube 52. Each spiral guide groove 521 extends spirally in both the axial and circumferential directions, and each transmission protrusion 53 is movably embedded in its corresponding spiral guide groove 521.

[0030] Please see Figure 2 , 4 -5. When the user twists the rotating sleeve 4 clockwise, the rotating sleeve 4 drives the lens telescopic guide tube 52 to rotate clockwise as well. Since the spiral guide groove 521 extends axially and circumferentially, the rear wall of each spiral guide groove 521 presses against the corresponding transmission protrusion 53, pushing the transmission protrusion 53 to move from back to front relative to the spiral guide groove 521. Therefore, it drives the lens bracket 51 to move forward together, thereby causing the optical lens assembly 3 to extend forward relative to the lens telescopic guide tube 52. The distance between the head assembly 3 and the subject is reduced; conversely, when the user twists the rotating sleeve 4 counterclockwise, the rotating sleeve 4 drives the lens telescopic guide tube 52 to rotate counterclockwise together. Since the spiral guide groove 521 extends axially and circumferentially, the front side wall of each spiral guide groove 521 presses against the corresponding transmission protrusion 53, pushing the transmission protrusion 53 to move from front to back along the spiral guide groove 521. Therefore, the lens bracket 51 moves backward together, thereby causing the optical lens assembly 3 to retract backward relative to the lens telescopic guide tube 52.

[0031] As can be seen, utilizing the cooperation between the transmission protrusion 53 and the spiral guide groove 521 in this specific embodiment, the rotating sleeve 4 is helically driven by the lens telescopic assembly 5 and the optical lens group 3. The rotational motion of the rotating sleeve 4 caused by the user twisting it is converted into the linear motion of the optical lens group 3 by the lens telescopic assembly 5. The optical lens group 3 is extended as a whole closer to the subject or retracted as a whole away from the subject. By extending and retracting as a whole, the distance between the optical lens group 3 and the subject is changed, thereby changing the focal length of the optical lens group 3 and realizing the zoom of the optical lens group 3. The above zooming process is operated by... For ease of use, users only need to twist the rotating sleeve 4 to change the extension degree of the optical lens group 3 according to the shooting needs, thereby obtaining the ideal zoom effect. The whole process is easy to operate, and the zoom effect is direct and obvious. Moreover, it is not difficult to see that the above zoom process does not involve any changes to the internal structure of the optical lens group 3. Technicians do not need to disassemble the existing optical lens group 3, nor do they need to redesign the relevant parameters of each optical lens in the optical lens group 3. They only need to calculate the required extension degree of the optical lens group 3 on the existing optical lens group 3 to implement the zoom range required. The existing optical lens group 3 resources are fully utilized.

[0032] In other specific embodiments, the transmission protrusion 53 is threaded, and the spiral guide groove 521 is threaded, with the transmission protrusion 53 engaging with the spiral guide groove 521. Similar to the working principle of the conventional columnar protrusion described above, the threaded transmission protrusion 53 is disposed on the outer circumferential surface of the lens support 51, engaging with the spiral guide groove 521. When the user twists the rotating sleeve 4 clockwise, the lens telescopic guide cylinder 52 rotates clockwise as well. Through the threaded engagement between the transmission protrusion 53 and the spiral guide groove 521, the rotational motion of the lens telescopic guide cylinder 52 is converted into the linear motion of the lens support 51, causing the lens support 51 to extend the optical assembly forward, closer to the subject. Conversely, when the user twists the rotating sleeve 4 counterclockwise... The lens telescopic guide tube 52 rotates counterclockwise along with the lens. Through the threaded engagement between the transmission protrusion 53 and the spiral guide groove 521, the rotational motion of the lens telescopic guide tube 52 is converted into the linear motion of the lens bracket 51. The lens bracket 51 drives the optical group to retract backward and move away from the subject. The user only needs to twist the rotating sleeve 4 according to the shooting needs to change the degree of telescopic extension of the optical lens group 3, thereby obtaining the ideal zoom effect. The entire zoom process is convenient and quick, and the zoom effect is direct. The existing optical lens group 3 can easily expand the zoom range by relying on the above zoom structure, and the existing optical lens group 3 resources can be fully utilized.

[0033] Please see Figure 2 , 4-5. In this specific embodiment, the lens telescopic assembly 5 further includes a telescopic guide shaft 54; a telescopic guide groove 512 adapted to the telescopic guide shaft 54 ​​is formed axially on the outer peripheral surface of the lens bracket 51. The front end of the telescopic guide shaft 54 ​​is fixedly connected to the lens mount 2, and its rear end is inserted into the telescopic guide groove 512 and movably connected to the lens bracket 51. The telescopic guide shaft 54 ​​corresponding to the lens bracket 51 can further guide the telescopic path of the lens bracket 51, guiding the lens bracket 51 to strictly extend forward or retract backward along the axial direction.

[0034] Please see Figure 2 , 4 -5. In specific implementation, technicians can set a stroke detection sensor 541 corresponding to the telescopic guide shaft 54. The specific stroke detection sensor 541 can be a sliding resistor with appropriate parameter settings and stable and reliable performance in the prior art. The stroke detection sensor 541 is set on the optical lens group 3 corresponding to the telescopic guide shaft 54, and the stroke detection sensor 541 will realize signal interaction with the optical lens group 3 through the internal chip and related circuit of the lens mount 2. The stroke detection sensor 541 is used to detect the degree of extension and retraction of the telescopic guide shaft 54. As described above, when the user twists the rotating sleeve 4, the optical lens group 3 extends or retracts through the lens telescopic assembly 5. The telescopic guide shaft 54 ​​extends or retracts along with the optical lens group 3. The stroke detection sensor 541 detects the extension and retraction degree of the telescopic guide shaft 54, which is equivalent to detecting the rotation direction and angle of the rotating sleeve 4. The stroke detection sensor 541 converts the detected extension and retraction degree of the telescopic guide shaft 54 ​​into an electrical signal and feeds it back to the chip and related circuits inside the lens mount 2. The chip and related circuits inside the lens mount 2 then send control signals to the optical lens group 3. Based on the established and existing control paradigm inside the optical lens group 3, the distance between the lenses inside the optical lens group 3 is changed, and zoom is achieved from inside the optical lens group 3, helping the photographic equipment obtain more reliable and clearer image information.

[0035] Please see Figure 1-2In this specific embodiment, the rotation sensor 6 is fixedly mounted on the lens mount 2 and interacts with the optical lens group 3 via signals. The fine-tuning sleeve 7 is disposed between the rotation sleeve 4 and the lens mount 2, and is sleeved on the lens bracket 51. The rotation sensor 6 is used to sense the rotation angle of the fine-tuning sleeve 7. Unlike the method in the lens telescopic assembly 5 described above, which converts rotational motion into linear motion to change the focal length of the optical lens group 3, the coordination between the rotation sensor 6, the fine-tuning sleeve 7, and the optical lens group 3 is achieved through circuitry and control algorithms to control the focal length change of the optical lens group 3: when the user twists the fine-tuning sleeve 7, the rotation sensor 6 detects the change in the rotation angle of the fine-tuning sleeve 7 in real time. Once the change in the angle of the fine-tuning sleeve 7 is detected, the rotation sensor 6 converts the angle change into an electrical signal and sends it to the control chip inside the photographic equipment. The control chip then controls the displacement devices of each lens inside the optical lens group 3 to achieve zooming of the optical lens group 3.

[0036] Please see Figure 3 In this specific embodiment, fine-tuning serrations 71 are evenly arranged on the inner wall of the fine-tuning sleeve 7, and the fine-tuning serrations 71 are fixedly arranged circumferentially on the inner wall of the fine-tuning sleeve 7. The rotation sensor 6 is a photoelectric sensor. When the fine-tuning sleeve 7 is twisted, the fine-tuning serrations 71 block the sensing light path of the photoelectric sensor or open the sensing light path of the photoelectric sensor. In specific implementation, those skilled in the art can choose mature and suitable photoelectric sensors provided in the prior art for application. In practical implementation, the photoelectric sensor has a transmitter, a receiver, and a detection circuit. The transmitter and receiver of the photoelectric sensor are respectively set on the front and rear sides of the fine-tuning sleeve 7. The transmitter of the photoelectric sensor emits detection light, and its receiver receives and senses the changes in the detection light. A sensing optical path is constructed between the transmitter and receiver in the photoelectric sensor. The photoelectric sensor communicates with the control chip inside the imaging equipment through the detection circuit to realize signal interaction. If the fine-tuning sleeve 7 is stationary, the fine-tuning sawtooth 71 is also stationary, and the optical path obstruction between the transmitter and receiver in the photoelectric sensor does not change. Once the user twists the fine-tuning sleeve 7, the fine-tuning sawtooth 71 set on the inner wall of the fine-tuning sleeve 7 moves accordingly, and the fine-tuning sawtooth 71 moves until it completely overlaps with the sensing optical path. When the position is such that the fine-tuning sawtooth 71 completely blocks the sensing light path of the photoelectric sensor, and when the fine-tuning sawtooth 71 moves to a position completely offset from the sensing light path, the fine-tuning sawtooth 71 completely opens the sensing light path of the photoelectric sensor. Since multiple fine-tuning sawtooth 71s are provided, two adjacent fine-tuning sawtooth 71s are evenly spaced and fixedly arranged on the inner wall of the fine-tuning sleeve 7 in the circumferential direction. When the user continuously rotates the fine-tuning sleeve 7, the photoelectric sensor can clearly know the rotation angle of the fine-tuning sleeve 7 according to the number of times the sensing light path is blocked, the blocking time, the blocking frequency, etc., and report the detection result to the control chip. The control chip can clearly know the user's zoom intention and control the displacement device of each lens inside the optical lens group 3 accordingly, ultimately changing the overall focal length of the optical lens group 3.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A lens rotation and telescopic device, comprising an optical lens assembly, characterized in that, It also includes a rotating sleeve and a lens telescopic assembly; The lens telescopic assembly has an axial telescopic channel inside, the optical lens group is placed in the telescopic channel and connected to the lens telescopic assembly, the rotating sleeve is sleeved on the lens telescopic assembly, and the rotating sleeve is helically driven to the optical lens group through the lens telescopic assembly. When the rotating sleeve is twisted, the optical lens group extends or retracts along the telescopic channel.

2. The lens rotation and telescopic device as described in claim 1, characterized in that, The lens telescopic assembly includes a lens bracket and a lens telescopic guide tube; the lens bracket is sleeved on the optical lens group, the lens telescopic guide tube is fixedly connected to the rotating sleeve, and the lens bracket and the lens telescopic guide tube are helically driven.

3. The lens rotation and telescopic device as described in claim 2, characterized in that, The lens telescopic assembly also includes a transmission protrusion, which is fixedly disposed radially on the lens bracket. A spiral guide groove is formed on the lens telescopic guide tube, and the transmission protrusion is engaged with the spiral guide groove.

4. The lens rotation and telescopic device as described in claim 3, characterized in that, The transmission protrusion is columnar and protrudes radially from the circumferential surface of the lens bracket. The spiral guide groove extends spirally in both the axial and circumferential directions, and the transmission protrusion is movably embedded in the spiral guide groove.

5. The lens rotation and telescopic device as described in claim 3, characterized in that, The transmission protrusion is threaded, the spiral guide groove is threaded, and the transmission protrusion engages with the spiral guide groove.

6. The lens rotation and telescopic device as described in claim 2, characterized in that, It also includes a lens mount, a rotation sensor, and a fine-tuning sleeve; the lens mount is sleeved on the lens bracket, the rotation sensor is fixedly mounted on the lens mount and interacts with the optical lens group, the fine-tuning sleeve is movably sleeved on the lens bracket, and the rotation sensor is used to sense the rotation angle of the fine-tuning sleeve.

7. The lens rotation and telescopic device as described in claim 6, characterized in that, The inner wall of the fine-tuning sleeve is uniformly provided with fine-tuning serrations, which are fixedly arranged circumferentially on the inner wall of the fine-tuning sleeve.

8. The lens rotation and telescopic device as described in claim 7, characterized in that, The rotation sensor is a photoelectric sensor. When the fine-tuning sleeve is twisted, the fine-tuning serrations either block or open the sensing light path of the photoelectric sensor.

9. The lens rotation and telescopic device as described in claim 6, characterized in that, The lens telescopic assembly also includes a telescopic guide shaft; a telescopic guide groove adapted to the telescopic guide shaft is formed axially on the outer peripheral surface of the lens bracket, the front end of the telescopic guide shaft is fixedly connected to the lens mount, and its rear end is inserted into the telescopic guide groove and movably connected to the lens bracket.

10. A photographic device, characterized in that, The photographic equipment uses the lens rotation and telescopic device as described in any one of claims 1-9.

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