Lens zoom system and optical lens

Abstract

The application discloses a lens zoom system and an optical lens. The lens zoom system comprises an optical zoom knob, the optical zoom knob is in transmission connection with a lens group of the lens, the relative position of the lens group is adjusted through rotation of the optical zoom knob to realize optical zooming, an electronic zoom module is integrated on the optical zoom knob and rotates with the optical zoom knob, the electronic zoom module is in signal connection with an electric control board of the lens to change the size of imaging. The electronic zoom module is integrated on the optical zoom knob, and the adjustment of optical zooming and electronic zooming can be realized at the same position by one hand.

Description

Technical Field

[0001] This application relates to the field of optical equipment technology, and in particular to a lens zoom system and an optical lens. Background Technology

[0002] In traditional infrared thermal imaging systems, the lens typically uses optical zoom, electronic zoom, or a combination of both to magnify or reduce the image.

[0003] However, existing lens zoom systems have some design flaws. For example, traditional lens zoom systems often use separate knobs for electronic zoom and optical zoom, which requires adjustment from different positions when operating with one hand, making it inconvenient.

[0004] Therefore, how to perform optical zoom and electronic zoom adjustment at the same location is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a lens zoom system and optical lens that integrates an electronic zoom module on an optical zoom knob, allowing for single-handed adjustment of both optical zoom and electronic zoom from the same position.

[0006] To achieve the above objectives, this application provides a lens zoom system, comprising:

[0007] An optical zoom knob is connected to the lens group of the lens. The axial relative position of the lens group is adjusted by rotating the optical zoom knob to achieve optical zoom.

[0008] An electronic zoom module is integrated into the optical zoom knob and rotates with the optical zoom knob. The electronic zoom module is connected to the electronic control board of the lens to change the size of the image.

[0009] Optionally, the signal input method of the electronic zoom module is at least one of rotary, button, or touch control.

[0010] Optionally, the optical zoom knob is provided with a slot that mates with the electronic zoom module, the electronic zoom module comprising:

[0011] A knob base is fixedly disposed in the slot, with one end of the knob base located inside the slot and the other end extending outside the slot, and the knob base having a hollow cavity;

[0012] A knob shaft is rotatably disposed in the hollow cavity, and one end of the knob shaft is connected to the input end of the rotation sensor.

[0013] An electronic zoom knob is fixedly installed at the other end of the knob shaft. The electronic zoom knob is sleeved on the other end of the knob base and is rotatably configured relative to the knob base.

[0014] Optionally, the hollow cavity is provided with a stepped structure, the knob shaft is provided with a retaining ring that abuts against the stepped structure, and the hollow cavity is provided with a limiting pressure ring, the end face of the limiting pressure ring and the stepped structure forming a limiting space that restricts the axial movement of the retaining ring.

[0015] Optionally, the rotation sensor is fixedly mounted on one end of the knob base, and the output end of the rotation sensor is connected to the electronic control board for signal transmission.

[0016] Optionally, the outer ring of the knob base is provided with a retaining ring, and a knob pressure ring is provided between the knob base and the slot. The knob pressure ring is pressed against the retaining ring, and the knob pressure ring is interference-fitted with the slot.

[0017] The knob base is provided with a limiting notch, and the inner wall of the slot is provided with a limiting boss that cooperates with the limiting notch to restrict the rotation of the knob base.

[0018] Optionally, the electronic zoom module and the electronic control board are connected by a communication harness signal, or the electronic zoom module and the electronic control board are connected by an arc-shaped contact ring signal.

[0019] Optionally, the electronic zoom module includes:

[0020] A cover is fixedly mounted on the optical zoom knob, and a button hole is provided on the cover;

[0021] A button is fixedly installed inside the cover, the button corresponds to the button hole, and extends out of the cover;

[0022] A circuit board is fixedly disposed between the cover and the optical zoom knob. The circuit board has contacts corresponding to the buttons, and the circuit board is signal-connected to the electronic control board.

[0023] Optionally, at least one end of the electronic zoom module protrudes from the optical zoom knob.

[0024] An optical lens includes a lens barrel and the aforementioned lens zoom system. The optical zoom knob is rotatably disposed on the outer periphery of the lens barrel, and the lens barrel contains an electronic control board and a lens group whose axial relative position is adjustable.

[0025] The beneficial effect of this application is that the electronic zoom module is integrated into the optical zoom knob. The optical zoom knob can adjust the relative position of the lens group to achieve optical zoom. The electronic zoom module can be connected to the electronic control board of the lens to change the size of the image. The operator can operate the optical zoom knob and the electronic zoom module with one hand in the same position to achieve optical zoom and electronic zoom of the lens, which is convenient and quick to operate. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the lens zoom system structure provided in the embodiments of this application;

[0028] Figure 2 This is a cross-sectional view of the lens zoom system provided in an embodiment of this application;

[0029] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0030] Figure 4 This is a cross-sectional view of the optical zoom knob and electronic zoom module provided in the embodiments of this application;

[0031] Figure 5 This is a side view of the optical zoom knob and electronic zoom module provided in the embodiments of this application;

[0032] Figure 6 This is an exploded view of the electronic zoom module provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the button-type electronic zoom module structure provided in an embodiment of this application;

[0034] Figure 8 This is a cross-sectional view of the button-type electronic zoom module provided in an embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the mating structure between the drive cylinder and the lens assembly provided in an embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the drive ring structure provided in an embodiment of this application.

[0037] In the diagram: 1-Optical zoom knob; 2-Electronic zoom module; 3-Jet barrel; 4-Drive barrel; 5-Lens group; 6-Middle shell; 7-Electronic control board; 8-Drive ring;

[0038] 11-Limiting block; 12-Protruding structure;

[0039] 21-Electronic zoom knob; 22-Limit ring; 23-Knob base; 24-Baffle; 25-Locking screw; 26-Knob shaft; 27-Rotation sensor; 28-Communication harness; 29-Knob ring;

[0040] 201 - Cover; 202 - Buttons; 203 - Circuit board;

[0041] 231 - Stepped structure; 232 - Retaining ring; 233 - Limiting notch; 261 - Retaining ring;

[0042] 41- Spiral groove;

[0043] 51-First guide pin; 52-Slot;

[0044] 61 - Threading port;

[0045] 81-Second guide pin; 82-Limiting groove; 83-Third guide pin. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] like Figure 1 and 2As shown, in this embodiment, a lens zoom system is provided. The system includes an optical zoom knob 1 and an electronic zoom module 2. The optical zoom knob 1 is rotatably disposed on the outer periphery of the lens barrel 3. The optical zoom knob 1 is connected to the lens group 5 of the lens through a transmission connection. Thus, by rotating the optical zoom knob 1, the relative position of the lens group 5 is adjusted, thereby achieving optical zoom.

[0050] The electronic zoom module 2 is integrated into the optical zoom knob 1. Here, integration means that the two are physically combined. For example, some or all of the components of the electronic zoom module 2 are installed on the optical zoom knob 1, so that the electronic zoom module 2 can rotate with the optical zoom knob 1. During the rotation of the electronic zoom module 2, it can always be connected to the lens's electronic control board 7, and thus adjust the size of the image through the electronic zoom module 2 to achieve electronic zoom.

[0051] As can be seen, this application integrates the electronic zoom module 2 onto the optical zoom knob 1, allowing the operator to operate both the optical zoom knob 1 and the electronic zoom module 2 with one hand in the same position, thus achieving both optical and electronic zoom of the lens, making the operation convenient and quick.

[0052] The signal input method of the electronic zoom module 2 can be one of rotary, button or touch. That is, the electronic zoom module 2 can use electronic knob, electronic button, rotation sensor 27, touch system or other means to change the output signal of the electronic zoom module 2, so that the electronic control board 7 can adjust the magnification, reduction, cropping and other functions of the image according to the output signal of the electronic zoom module 2.

[0053] For the aforementioned rotary electronic zoom module 2, a slot can be provided on the optical zoom knob 1, the electronic zoom module 2 is assembled in the slot, and the rotary input end of the electronic zoom module 2 is exposed relative to the optical zoom knob 1, so as to facilitate manual operation of the rotary input end and change the output signal of the electronic zoom module 2.

[0054] Similarly, for the aforementioned button-type or touch-controlled electronic zoom module 2, corresponding electronic buttons and electronic touch systems can be fixedly installed on the optical zoom knob 1, and the output signal of the electronic zoom module 2 can be changed by pressing or touching.

[0055] This application uses a rotary electronic zoom module 2 as an example for description. The electronic zoom module 2 includes a knob base 23, a knob shaft 26, and an electronic zoom knob 21. Please refer to... Figures 3 to 6 The knob base 23 can be fixedly installed in the slot, and the inner wall of the slot provides stable support for the knob base 23. At the same time, one end of the knob base 23 is located in the slot, while the other end extends out of the slot, and the knob base 23 has a hollow cavity.

[0056] The knob shaft 26 is inserted into the hollow cavity of the knob base 23 with a circumferential clearance fit, allowing the knob shaft 26 to rotate stably within the hollow cavity. A rotation sensor 27 is fixedly mounted at one end of the knob base 23, and one end of the knob shaft 26 is connected to the input end of the rotation sensor 27. Specifically, the end of the knob shaft 26 is inserted into the middle socket of the rotation sensor 27, causing the knob shaft 26 to drive the input end of the rotation sensor 27 to rotate. The rotation sensor 27 is mainly used to convert rotation signals into electrical signals. In actual use, the rotation sensor 27 can be a rotary encoder or potentiometer, or anything else capable of detecting rotation signals and converting them into electrical signals; no further restrictions are imposed here.

[0057] The electronic zoom knob 21 is fixedly installed at the other end of the knob shaft 26, so that the electronic zoom knob 21 can drive the knob shaft 26 to rotate; in addition, the electronic zoom knob 21 can also be sleeved on the end of the knob base 23 that protrudes from the slot, so that the knob base 23 can provide a stable rotation support for the electronic zoom knob 21.

[0058] When it is necessary to adjust the output signal of the electronic zoom module 2, the electronic zoom knob 21 can be rotated to drive the knob shaft 26 to rotate, and the rotation effect is further transmitted to the rotation sensor 27. The output signal changes as the rotation angle of the rotation sensor 27 changes.

[0059] In addition, a stepped structure 231 is provided in the hollow cavity, and the steps are distributed in a ring along the inner wall of the hollow cavity. A retaining ring 261 is provided on the knob shaft 26 to limit the axial movement of the stepped structure 231. During the process of inserting the knob shaft 26 into the hollow cavity, the retaining ring 261 will gradually move toward the stepped structure 231 until the two come into contact, indicating that the knob shaft 26 has been inserted in place.

[0060] A limiting ring 22 is also provided in the hollow cavity. The limiting ring 22 may be configured with external threads, and the hollow cavity may be configured with internal threads. After the knob shaft 26 is inserted into place, the limiting ring 22 can be screwed into the hollow cavity. At the same time, the limiting ring 22 can be sleeved on the outer circumference of the knob shaft 26 during the screwing process. As the limiting ring 22 is screwed in, it will gradually move towards the retaining ring 261. After the limiting ring 22 moves a certain distance in the axial direction, a limiting space is formed between the end face of the limiting ring 22 and the stepped structure 231 to restrict the axial movement of the retaining ring 261. This limiting space forms a clearance fit with the retaining ring 261, so that the knob shaft 26 can only rotate freely along the axis in the knob base 23, and will not move up and down.

[0061] The rotation sensor 27 is fixedly mounted on the end of the knob base 23, and the two can be secured with screws. During the insertion of the knob shaft 26 into the hollow cavity, the hollow cavity limits its movement, ensuring that its end aligns with the insertion hole of the rotation sensor 27. Once the knob shaft 26 is fully inserted, it ensures that its end is precisely inserted into the hole. The output of the rotation sensor 27 is connected to the electronic control board 7.

[0062] To ensure the knob base 23 is stably positioned in the slot and to prevent rotation and axial movement, in this embodiment, a retaining ring 232 is provided on the outer periphery of the knob base 23, and a knob retaining ring 29 is provided between the knob base 23 and the slot. The knob retaining ring 29 is interference-fitted with the slot, giving the knob retaining ring 29 a stable position. When the knob retaining ring 29 is in place, it presses against the retaining ring 232, and the retaining ring 232 or the lower end of the knob base 23 abuts against the bottom of the slot, thereby stably confining the knob base 23 in the slot and preventing axial movement. Furthermore, please refer to... Figure 6 A limiting notch 233 is provided on the outer wall of the knob base 23, and a limiting boss that cooperates with the limiting notch 233 is provided on the inner wall of the slot, thereby preventing the knob base 23 from rotating.

[0063] Furthermore, the knob base 23 can only be installed correctly when the limiting cut 233 and the limiting boss are axially aligned. Therefore, it can play a certain role in preventing mistake-proofing and ensuring accurate installation of the knob base 23. The limiting cut 233 can be a flat surface, a through groove, or other structures after cutting, with the limiting boss corresponding to it. No further restrictions are imposed here, as long as it does not affect the insertion of the knob base 23 into place and can restrict rotation after the knob base 23 is inserted into place, all of which fall within the protection scope of this application.

[0064] In some embodiments, the electronic zoom module 2 and the electronic control board 7 can be connected via a communication harness 28. Please refer to [reference needed]. Figure 3 and Figure 4 A pre-set angled wire pass-through port 61 is provided on the lens housing. The communication cable harness 28 enters the housing through the wire pass-through port 61 and is electrically connected to the electronic control board 7. Here, the housing refers to the lens barrel 3 or the middle shell 6. The lens barrel 3 and the middle shell 6 are connected to form the lens housing structure. Of course, the lens housing includes, but is not limited to, the lens barrel 3 and the middle shell 6.

[0065] The aforementioned preset angle should be greater than or equal to the rotation angle of the optical zoom knob 1, to ensure that the communication cable harness 28 can move freely in the circumferential direction within the cable entry port 61 during the rotation of the optical zoom knob 1, and to avoid the communication cable harness 28 affecting the rotation of the optical zoom knob 1.

[0066] Of course, for the connection between the electronic zoom module 2 and the electronic control board 7 via the communication harness 28, the wire hole 61 on the housing can also be a round hole or other shape hole that matches the wire diameter of the communication harness 28. However, it is necessary to ensure that the communication harness 28 has sufficient length so that when the optical zoom knob 1 is rotated, the length of the communication harness 28 outside the housing can meet the rotation requirements of the optical zoom knob 1.

[0067] In addition, the electronic zoom module 2 and the electronic control board 7 can also be connected via an arc-shaped contact ring. For example, an arc-shaped contact ring is fixedly installed in the lens housing. The signal output terminal of the electronic zoom module 2 is set as a contact point that contacts the arc-shaped contact ring. The arc-shaped contact ring is coaxially arranged with the optical zoom knob 1. When the optical zoom knob 1 is rotated, the electronic zoom module 2 can always maintain electrical conduction with the arc-shaped contact ring. The output terminal of the arc-shaped contact ring can be connected to the electronic control board 7 via a wiring harness.

[0068] Please refer to Figure 3 and Figure 6 The knob shaft 26 and the electronic zoom knob 21 can be fixedly connected by the locking screw 25, and a baffle 24 is provided on the electronic zoom knob 21. The baffle 24 serves to hide the locking screw 25, making the electronic zoom knob 21 more aesthetically pleasing.

[0069] When using the button-type electronic zoom module 2, please refer to... Figure 7 and Figure 8 The electronic zoom module 2 includes a housing 201, buttons 202, and a circuit board 203. The housing 201 is fixedly mounted in the slot of the optical zoom knob 1 by screws, and a button hole is provided on the housing 201. The buttons are located inside the housing 201 and fixedly attached to the circuit board 203. The buttons 202 correspond to the button holes and extend outside the housing 201. The circuit board 203 is fixedly located between the housing 201 and the optical zoom knob 1. Screws can pass through the housing 201 and the circuit board 203 in sequence and be fixedly connected to the optical zoom knob 1. The circuit board 203 has pressing contacts corresponding to the buttons 202. The back of the circuit board 203 is connected to the electronic control board 7 for signal transmission. The magnification and reduction functions of the electronic zoom module 2 can be realized through the two buttons 202.

[0070] Compared to the rotary electronic zoom module 2, the button-type electronic zoom module 2 occupies less space, making the zoom system structure more compact.

[0071] In addition, the optical zoom knob 1 has a raised structure 12 at the integrated electronic zoom module 2, please refer to... Figure 5The protrusion structure 12 can be a protrusion formed by the electronic zoom module 2 protruding from the optical zoom knob 1, or it can be a protrusion formed by the optical zoom knob 1 extending outward. Through the protrusion structure 12, it can act as a lever when the user uses the optical zoom knob 1, so that the user can easily rotate the optical zoom knob 1 by relying on the protrusion structure 12.

[0072] This application also provides an optical lens, which includes a lens barrel 3 and the above-mentioned lens zoom system. The optical zoom knob 1 of the lens zoom system is rotatably disposed on the outer periphery of the lens barrel 3. A drive ring 8 is also provided on the outer periphery of the lens and at a position corresponding to the optical zoom knob 1. The inner wall of the drive ring 8 is in clearance fit with the outer wall of the lens, so that the drive ring 8 can rotate around the lens axis. Further, the optical zoom knob 1 is located on the outer periphery of the drive ring 8.

[0073] A limiting block 11 is provided on the inner wall of the optical zoom knob 1, and a limiting groove 82 is provided on the outer wall of the drive ring 8. Please refer to... Figure 10 The limiting block 11 engages with the limiting groove 82, thereby enabling the optical zoom knob 1 to drive the drive ring 8 to rotate coaxially. The drive ring 8 is provided with a second guide pin 81 and a third guide pin 83. The third guide pin 83 engages with the circumferential groove on the outer wall of the lens barrel 3, allowing the drive ring 8 to rotate only relative to the lens barrel 3. The second guide pin 81 engages with the circumferential hole on the lens barrel 3, allowing the second guide pin 81 to extend into the lens barrel 3 and engage with the drive cylinder 4 inside the lens barrel 3.

[0074] The drive cylinder 4 is rotatably mounted inside the lens barrel 3, and the lens assembly 5 is mounted inside the drive cylinder 4; please refer to... Figure 9 The drive cylinder 4 is provided with a slot 52 that cooperates with the second guide pin 81. At the same time, the drive cylinder 4 is also provided with multiple spiral grooves 41 that cooperate with the first guide pin 51 of the lens group 5. When the optical zoom knob 1 is rotated, it can drive the drive ring 8 to rotate. The second guide pin 81 on the drive ring 8 can drive the drive cylinder 4 to rotate, so that the first guide pin 51 moves axially under the drive of the corresponding spiral groove 41, thereby adjusting the axial relative position of the lens group 5 and realizing different magnifications.

[0075] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0076] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A lens zoom system, characterized in that, include: Optical zoom knob (1) is connected to the lens group (5) of the lens. The axial relative position of the lens group (5) is adjusted by rotating the optical zoom knob (1) to achieve optical zoom. The electronic zoom module (2) is integrated into the optical zoom knob (1) and rotates with the optical zoom knob (1). The electronic zoom module (2) is connected to the electronic control board (7) of the lens to change the size of the image.

2. The lens zoom system according to claim 1, characterized in that, The signal input method of the electronic zoom module (2) is at least one of rotary, button or touch.

3. The lens zoom system according to claim 1, characterized in that, The optical zoom knob (1) is provided with a slot that mates with the electronic zoom module (2), and the electronic zoom module (2) includes: A knob base (23) is fixedly disposed in the slot. One end of the knob base (23) is located inside the slot, and the other end extends outside the slot. The knob base (23) has a hollow cavity. A knob shaft (26) is rotatably disposed in the hollow cavity, and one end of the knob shaft (26) is connected to the input end of the rotation sensor (27); An electronic zoom knob (21) is fixedly installed on the other end of the knob shaft (26). The electronic zoom knob (21) is sleeved on the other end of the knob base (23) and rotates relative to the knob base (23).

4. The lens zoom system according to claim 3, characterized in that, The hollow cavity is provided with a stepped structure (231), and the knob shaft (26) is provided with a retaining ring (261) that abuts against the stepped structure (231). The hollow cavity is provided with a limiting pressure ring (22), and the end face of the limiting pressure ring (22) and the stepped structure (231) form a limiting space that restricts the axial movement of the retaining ring (261).

5. The lens zoom system according to claim 3, characterized in that, The rotation sensor (27) is fixedly mounted on one end of the knob base (23), and the output end of the rotation sensor (27) is connected to the electronic control board (7) for signal transmission.

6. The lens zoom system according to claim 3, characterized in that, The outer ring of the knob base (23) is provided with a retaining ring (232), and a knob pressure ring (29) is provided between the knob base (23) and the slot. The knob pressure ring (29) is pressed against the retaining ring (232), and the knob pressure ring (29) is interference-fitted with the slot. The knob base (23) is provided with a limiting cut (233), and the inner wall of the slot is provided with a limiting boss that cooperates with the limiting cut (233) to restrict the rotation of the knob base (23).

7. The lens zoom system according to claim 1, characterized in that, The electronic zoom module (2) and the electronic control board (7) are connected by a communication harness (28), or the electronic zoom module (2) and the electronic control board (7) are connected by an arc-shaped contact ring.

8. The lens zoom system according to claim 1, characterized in that, The electron zoom module (2) includes: A cover (201) is fixedly mounted on the optical zoom knob (1), and a button hole is provided on the cover (201); A button (202) is fixedly disposed inside the cover (201). The button (202) corresponds to the button hole and extends out of the cover (201). The circuit board (203) is fixedly disposed between the cover (201) and the optical zoom knob (1). The circuit board (203) has a contact corresponding to the button (202). The circuit board (203) is connected to the electronic control board (7) for signal transmission.

9. The lens zoom system according to any one of claims 1-8, characterized in that, The optical zoom knob (1) has a protrusion structure (12) at the location where the electronic zoom module (2) is integrated. The protrusion structure (12) is: the electronic zoom module (2) protrudes out of the optical zoom knob (1), and / or the optical zoom knob (1) extends outward.

10. An optical lens, characterized in that, Includes a lens barrel (3) and a lens zoom system as described in any one of claims 1-9, wherein the optical zoom knob (1) is rotatably disposed on the outer periphery of the lens barrel (3), and the lens barrel (3) is provided with an electronic control board (7) and a lens group (5) whose axial relative position is adjustable.

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