The present disclosure relates to night vision devices. More particularly, the present disclosure relates to a focal adjustment system for night vision devices.
Night vision made its appearance during World War II. Since then, capabilities of night vision have progressed exponentially. Night vision comes in a variety of devices, including goggles, telescopic sights, among others. To function, night vision enhances ambient visible light and converts near-infrared light into visible light, which allows visualization of surroundings when light levels are low. Goggles and other night vision devices often have protective lenses to prevent bloom out, meaning that white or green colors will fill the field of view.
While there are numerous benefits to night vision and improvements have been made over the years, there are still some inherent issues. One of these issues occurs due to a user having no way to adjust the focal point of the night vision while in operation through either the night vision device or the protective lenses. As an example of this issue, when a user looks at objects in the distance with night vision, the distant objects will be seen clearly. However, all objects between the distant objects and the user will be blurry. With current night vision units, in order to see something closer, users have to re-adjust an objective lens of a night vision device, which often requires a user to use both of their hands. This is one of the biggest limitations of night vision—lack of focal point adjustability when looking through the device.
Accordingly, there is a need for a system that rapidly and accurately changes the focal point of the night vision device on command. The present invention seeks to solve these and other problems.
In one embodiment, an electronic focal adjustment system for night vision devices (hereinafter referred to as “adjustment system”) comprises a focal adjustment apparatus, a power source apparatus, a button apparatus, and a sensor device. The focal adjustment apparatus may comprise a housing. The housing may have one or more first ports that may be configured to receive, for example, communication cables. The housing may fasten to a lens ring and a lens mount, thereby allowing a user to secure the lens ring and lens mount to the focal adjustment apparatus via first fasteners. The lens ring may comprise finger grooves. An internal compartment of the housing may include a digital encoder, a motor proximate the digital encoder, a motor gear fastened to the motor, an encoder gear that is configured to function with the motor gear, and a switch that fastens to the housing.
The lens ring may be configured to receive a lens cover. The lens cover may snap onto the finger grooves of the lens ring. The lens cover may include a lens, such as a translucent or opaque lens.
The adjustment system may comprise the power source apparatus which connects to the focal adjustment apparatus so as to provide power thereto. The power source apparatus may be coupled to a helmet, a cap, or on the user's person. The power source apparatus may comprise a battery housing to receive a power source. A battery drawer which comprises a power source compartment may be removably attachable from the battery housing so as to provide access to the power source compartment and the power source. Furthermore, on a rear of the battery housing may be a back plate that covers and/or circumscribes a plurality of battery ports. The rear of the battery housing may also have a battery switch, a motor driver that interacts with the switch, and a processor.
The button apparatus may include a front button cover and a back button cover. The back button cover may comprise a button apparatus port and a PCB board. A plurality of buttons may communicate and interact with the PCB board. When in use, the button apparatus may be positioned on a side of a helmet, on a cap, on a user's person, or other auxiliary devices, weapons, etc.
The sensor device may comprise a sensor housing and a sensor back plate. Positioned in the back plate may be a plurality of sensor ports that may receive cables so as to communicate with the focal adjustment apparatus, the power source apparatus, and/or the button apparatus. The sensor device may comprise sensors, such as ultrasonic sensors or other laser measurement devices. The sensor device may also include a gyroscope.
In one embodiment, a variable objective lenses controller night vision apparatus comprises a housing (i.e., main housing) with a first lens assembly and a second lens assembly extending from the sides thereof. The housing may include a mounting plate. The housing may further comprise one or more power ports. The housing may include a switch that provides power to the adjustment apparatus. Positioned above the switch may be a sensor. A lower surface of the housing may include a scroll wheel and/or a potentiometer. The housing may further comprise a controller.
The first lens assembly may include a first housing. The first housing may comprise first lenses, one or more fasteners, safety line apertures, and a first ocular lens mounting. The second lens assembly may include a second housing with second lenses. The second housing may include an ocular assembly that is threadably coupled, or attached via any other coupling mechanisms, to a second ocular lens mounting. The ocular assembly may be removably attachable to the second ocular lens mounting and include one of the second lenses. The second housing may further comprise an objective lens assembly, a motor portion that is configured to receive a motor, and a printed circuit board.
While embodiments of the present disclosure may be subject to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, the present disclosure is not intended to be limited to the particular features, forms, components, etc. disclosed. Rather, the present disclosure will cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure.
Reference to the invention, the present disclosure, or the like are not intended to restrict or limit the invention, the present disclosure, or the like to exact features or steps of any one or more of the exemplary embodiments disclosed herein. References to “one embodiment,” “an embodiment,” “alternate embodiments,” “some embodiments,” and the like, may indicate that the embodiment(s) so described may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic.
Any arrangements herein are meant to be illustrative and do not limit the invention's scope. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation. Unless otherwise defined herein, such terms are intended to be given their ordinary meaning not inconsistent with that applicable in the relevant industry and without restriction to any specific embodiment hereinafter described.
It will be understood that the steps of any such processes or methods are not limited to being carried out in any particular sequence, arrangement, or with any particular graphics or interface. In fact, the steps of the disclosed processes or methods generally may be carried out in various, different sequences and arrangements while still being in the scope of the present invention. Certain terms are used herein, such as “comprising” and “including,” and similar terms are meant to be “open” and not “closed” terms. These terms should be understood as, for example, “including, but not limited to.”
As previously described, there is a need for a system that rapidly and accurately changes the focal point of the night vision device on command. The present invention seeks to solve these and other problems.
Night vision comes in a variety of devices, including goggles, telescopic sights, among others. To function, night vision enhances ambient visible light and converts near-infrared light into visible light, which allows visualization of surroundings when light levels are low. While there are numerous benefits to night vision and improvements have been made to devices over the years, there remains key issues with the devices. One of these issues is presented in focal point adjustment, meaning that a user has no way to adjust the focal point of the night vision while in operation. As an example of this issue, when a user looks at objects in the distance with night vision, the distant object will be seen clearly. However, all objects between the distant objects and the user will be blurry.
With current night vision units, in order to see something closer, users have to adjust the objective lens of the night vision device with both hands, which may not be effective. This limitation could cause harm to armed forces when in a dangerous situation. Some have attempted to fix this issue by creating a manual adjustment. However, even if there is a manual adjustment to adjust the focal point, it creates another task for a user to perform. Further, in a difficult, adrenaline filled situation, it may be problematic for a user to find the correct positions on the night vision device manually so as to have the most clarity and it takes precious time that a user may not have.
The system described herein utilizes various components so as to electronically adjust the focal point of the night vision device for a user based on pre-calibrated distances. The system may comprise one or more gears, a motor, one or more sensors, a power source apparatus, and a computing device within, or separate from, the power source apparatus, such as a processor and a controller, that are configured to interact with a lens mount and a lens ring. A user may set the system to desired focal adjustments that are stored in the adjustment system. As such, the adjustment system, such as the processor and controller, may send signals and activate the motor and the gears to adjust the system to a user's pre-calibrated distances. It will be understood that the system allows a night vision device to quickly adjust to a specific user so as to increase clarity in the night vision device and ultimately, provide additional protection for the user in combat situations and additional information regarding the user's surroundings.
In one embodiment, an electronic focal adjustment system 100 (hereinafter referred to as “adjustment system”) for night vision devices comprises a focal adjustment apparatus 102, a power source apparatus 104, a button apparatus 106, and a sensor device 108.
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A lower surface 122 of the cover 114 may have an aperture 124 in a column protrusion 126 that substantially runs the length or height of the housing 110, which is attached to a side of the focal adjustment apparatus 102. The column 126 may descend to a housing fastening ring 127 (
When the cover 114 is removed, a user may view an internal compartment 140 of the housing 110. The internal compartment 140 may include a digital encoder 142 that is positioned between the column 126 and the back plate 112, a motor 144 (e.g., a brushless servo motor or stepper motor) proximate the digital encoder 142 that detects rotation, a motor gear 146 with motor teeth 147 fastened to the motor 144, an encoder gear 148 with encoder teeth 149 that is configured to function with the motor gear 146 to move the lens mount 130, and a switch 150 (e.g., a micro switch with a tipping point mechanism) that fastens to the motor gear 146 and encoder gear 148. The motor teeth 147 and encoder teeth 149 may contact so as to interact with each other and rotate the lens mount 130 to adjust the focal point of the night vision device. The switch 150 may be configured to function with the extended gear tooth 139 so as to limit movement of the lens mount 139 or to control rotation of the lens mount 139. In some embodiments, the switch 150 may be a reed switch.
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It will be appreciated that the adjustment system 100 may, in some embodiments, be configured into a single-unit, meaning the power source apparatus 104, the button apparatus 106, and the sensor device 108 may be integrated into the focal adjustment apparatus 102. It will further be appreciated that the adjustment system 100 in some embodiments may be an entirely self-contained unit in the objective lens.
In other embodiments, the adjustment system 100 with its various components may be connected via wires, as described above, or wirelessly and may communicate through transmitters and receivers or transceivers within the various components, such as the focal adjustment apparatus 102, the sensor device 108, and/or button apparatus 106.
To function, the adjustment system 100 changes the focus of the night vision device by controlling the objective lens and changing the focal point. To accomplish this and as discussed above, the adjustment system 100 may utilize the focal adjustment apparatus 102 that receives and gives feedback to the power source apparatus 104. Code in the processor 172, or other computing systems in the adjustment system 100, may allow a user to preset the objective lens of the night vision device by using the button apparatus 106 to select pre-calibrated distances that are specific to each user. The calibration process may use, for example, the motor 144 to send feedback to the processor 172 to save the various positions of the objective lens based on distances predetermined by the user or as established or determined by a third party. For the user to select pre-calibrated distances, the user may rotate/twist the objective lens until it reaches the desired focus at a given distance, then by pressing one or more of the plurality of buttons 182A-182D the processor 172 can save this as one option. As an example, when the user is 20 yards away from a desired viewable object, the user may select the pre-calibrated 20-yard button of the plurality of buttons 182A-182D. The user can repeat this process until all positioning options are occupied. After the calibration process, the adjustment system 100 may use the buttons 182A-182D that quickly changes the focal point of the night vision device to allow the user to switch the pre-calibrated distances. In some embodiments, the user may not only use the pre-calibrated distance buttons, but may also have a button that adjusts the focal point to distances that were not previously calibrated.
Further, the adjustment system 100 may include a wiring harness and a vibration module that provides feedback to a user. In some embodiments, different methods may be used to control the processor 172 such as to adjust the focus of the device and multiple buttons set to different distances. In one embodiment, the adjustment system 100 may be an entirely self-contained unit in the objective lens. In one embodiment, the adjustment system 100 may utilize a diaphragm or an aperture.
It will be appreciated that there are numerous advantages with the adjustment system 100, such as changing the focal point quickly and purposefully and limiting body movement by a user to adjust the objective lens of the night vision device. Further, the adjustment system 100 does not restrict the amount of light entering the night vision device, which is extremely important due to the fact that access to light is crucial for quality viewing through a night vision device.
In some embodiments, the adjustment system 100 may use AI so as to adjust the code and or processor to a particular user and his/her focal point adjustments. Further, it will be understood that the adjustment system 100 is not limited to a monocular night vision device and may be used with a binocular night vision device, or with any other format of body-worn or other night vision device. The adjustment system 100 may communicate wirelessly or via wires. It will be appreciated that the focal adjustment apparatus 102, the button apparatus 106, and the sensor device 108 may be connected to the power source apparatus 104 either wirelessly or with wires. The sensor device 108 may also be connected to the focal adjustment apparatus 102.
In some embodiments, the adjustment system 100 may be integrated into the manufacturing process of a night vision device, meaning that the system 100 and the night vision device are a single, manufactured unit. In other embodiments, the adjustment system 100 may be integrated into the objective lens of a night vision device.
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The first and second lens assemblies 204, 206 may be hingedly coupled to the housing 202 and be removably attachable therefrom. It will be understood that the first and second lens assemblies 204,206 may not only move laterally away from and towards the housing 202, but may also, in some embodiments, pivot towards or away from a user's face when the adjustment apparatus 200 is worn. The first lens assembly 204 may include a first housing 218. The first housing 218 may comprise first lenses 220A, 220B, one or more fasteners 222, safety line apertures 224, and a first ocular lens mounting 226 that may be, for example, threaded. The second lens assembly 206 may include a second housing 228 (e.g., an objective lens housing) with second lenses 230A, 230B. The second housing 228 may include an ocular assembly 232 that is threadably coupled to a second ocular lens mounting 234. The ocular assembly 232 may be removably attachable to the second ocular lens mounting 234 and include one of the second lenses 230A. The second housing 228 may further comprise an objective lens assembly 236, a motor portion 238 that is configured to receive a motor 240, and a printed circuit board 242. The motor 240 may comprise a linear, computer-controlled servo motor. In some embodiments, the motor 240 may include a rotary-controlled servo motor and/or stationary liquid lens technology, or other motor and sensor combinations. In some embodiments, the first and second lenses 220A, 220B, 230A, 230B may be field of view lenses with traditional lenses (e.g., glass), liquid lenses, or any other wide field of view lenses. The first and/or second lens assemblies 204, 206 may include an intensifier tube. In some embodiments, the intensifier tube may be directly coupled to a lens.
The adjustment apparatus 200 may include firmware that is programmed to automatically adjust positions of the first and/or second lenses to achieve clear focus on objects targeted by a user. When data from the sensor 214 is received by and processed through the controller, the controller then translates that data into the linear position of the motor by utilizing the firmware, thereby adjusting the position of the ocular assembly 232 or one or more of the first and/or second lenses (i.e., changing the focal point). This process is accomplished with little to no inputs from the user.
Furthermore, the adjustment apparatus 200 may include a wireless remote that allows a user to make on demand adjustments as needed based on the limitations of the sensor. The wireless remote may use WI-R technology or any other low frequency wireless data transmission. In some embodiments, the adjustment apparatus includes hinges that could be used with slip contacts to increase strength at stress points and maintain electrical conductivity. Further, by stacking copper tubes and non-conductive tubes inside of one another then chamfering the leading edge reading a code with different copper layers exposed to spring loaded contacts. While the adjustable apparatus 200 is shown as binoculars, the adjustable apparatus may be configured to function as a scope, monocular, low power variable optics, etc.
In some embodiments, portions of adjustment apparatus 200 may be manufactured from a conductive material to reduce electromagnetic interference from the intensifier tube. This could also be done through sufficient shielding lining the inside of the housings. It will be appreciated that the adjustment apparatus 200 with night vision capabilities can be automatically focused on any viewed, targeted object.
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The ocular lens assembly 308 may be adjusted automatically or via a manual adjust control point knob 312. The ocular lens assembly 308 may include a first lens 314. The lens member 306 may include the objective lens assembly 304 at one end and the ocular lens assembly 308 at an opposite end of the objective lens assembly 304. The lens member 306 may be positioned within and secured to the housing 302. The lens member 306 may comprise a printed circuit board 316, an intensifier tube 318, and a motor 320. The motor 320 may comprise a linear, computer-controlled servo motor. In some embodiments, the motor 320 may include a rotary-controlled servo motor and/or stationary liquid lens technology, or other motor and sensor combinations. The objective lens assembly 304 may include a second lens 322. In some embodiments, the first and second lenses 314, 322 may be field of view lenses with traditional lenses (e.g., glass) or liquid lenses. In some embodiments, the lens member 306 may include a thermal overlay 324 as shown in
The adjustment apparatus 300 may include firmware that is programmed to automatically adjust positions of the first and/or second lenses to achieve clear focus on objects targeted by a user. When data from the sensor 310 is received by and processed through the controller, the controller then translates that data into the linear position (in some embodiments, rotational or any other movement or position) of the motor by utilizing the firmware, thereby adjusting the position of the ocular assembly 308 and/or objective assembly, thereby changing the focal point. This process is accomplished with little to no inputs from the user.
Furthermore, the adjustment apparatus 300 may include a wireless remote that allows a user to make on demand adjustments as needed based on the limitations of the sensor. The wireless remote may use WI-R technology or any other low frequency wireless data transmission. In some embodiments, the adjustment apparatus includes hinges that could be used with slip contacts to increase strength at stress points and maintain electrical conductivity. While the adjustable apparatus 300 is shown as a monocular, the adjustable apparatus may be configured to function as a scope, binocular, low power variable optics, etc.
In some embodiments, the housing 302 may be manufactured from a conductive material to reduce electromagnetic interference from the intensifier tube 318. This could also be done through sufficient shielding lining the inside of the housing 302. This could potentially reduce the threat of an electromagnetic pulse.
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The first hinge assembly 404 and the second hinge assembly 406 may each include a rotating hinge that allows for panoramic adjustment. The first hinge assembly 404 may include a first hinge dumbbell 418 that allows wires to pass around without obstruction. The second hinge assembly 406 may include a second hinge dumbbell 420 that allows wires to pass it. The first and second hinge dumbbells 418, 420 may be configured to receive first and second lens assemblies similar to those discussed in other embodiments herein and function in a similar manner to those designs.
Furthermore, the adjustment apparatus 400 may include a wireless remote that allows a user to make on demand adjustments as needed based on the limitations of the sensor. The wireless remote may use WI-R technology or any other low frequency wireless data transmission.
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A rear portion of the adjustment apparatus 500 may include a section of the housing 504, the housing rear cover 508, a laser emitter 518, a power/mode switch 520 and power switch cover 522, a gain control knob 524 (that interacts with a potentiometer or other similar device) with a gain control knob cover 526, and a battery pack receptacle 528 and battery pack cover 530.
A left side of the adjustment apparatus 500 may comprise a first button housing 532A. The first button housing 532A may include one or more first buttons 534A-534C that control the adjustment apparatus 500. Furthermore, the left side of the adjustment apparatus may include a first pod 536A (e.g., pod and pod cover). The left side may further include a first IPD pin 538A and a first IPD screw 540A, or any other type of fasteners.
Similarly, a right side of the adjustment apparatus 500 may include a second button housing 532B with a rear button housing 533. The rear button housing 533 may include one or more second buttons that control the adjustment apparatus 500. The second button housing 532A may include one or more third buttons 534D (other buttons not shown). It will be appreciated that the one or more first, second, and third buttons 534A-534D may be positioned on any portion of the adjustment apparatus 500 and/or a remote control. In addition, the right side of the adjustment apparatus 500 may also include a second pod 536B (e.g., pod and pod cover). The right side may include a second IPD pin 538B and a second IPD screw 540B. The first and second pods 536A, 536B may be positioned between the first housing section and the second housing section and on both sides of the bridge 502. The first and second pods 536A, 536B may be attached to the bridge via articulated joints with, for example, integrated Inter-Pupillary Distance (IPD) stops that have knobs for the user to adjust the distance the first and second pods 536A, 536B can close. In some embodiments, the first and second pods 536A, 536B could also be assembled with a MonoPod rather than being attached to the bridge 502, where the Monopod would have all the functions of the full bridge such as sensor and battery power (remote and onboard) with controls, integrated into a single tube unit.
The adjustment apparatus 500 may include a first, a second, and a third microcontroller. The first microcontroller may be positioned in the bridge 502, the second microcontroller may be positioned within the first pod 536A, and the third microcontroller may be positioned in the second pod 536B. The first controller may be the master controller and the first and second microcontrollers may each be responders. The bridge 502 may include the laser emitter/range finder 518 (or any other time of flight sensor or distance sensor). The first microcontroller takes a distance measurement and matches that distance with a corresponding “displacement value.” This data/displacement value is then transmitted to the second microcontroller and the third microcontroller, where the second and third microcontrollers use this value to determine how much and how quickly the motor needs to move portions of the objective lens assemblies 506A, 506B, discussed herein, to match the new “displacement value.” Once the target is reached, the motor stops moving and the second and third microcontrollers wait for the next command.
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The objective lens gear 558 may interact with a motor spur gear 568 that is coupled to a motor 570, and the motor 570 is coupled to motor mounts 572. The motor spur gear, motor, and motor mount 568, 570, 572 may be exposed and accessible in the aperture 546 on the exterior shell 542. The motor spur gear 568 drives the objective lens drive gear 558. The objective lens gear 558 is stabilized inside the shell 542 with snap rings 574A-574C, or other fastening mechanisms, and the first and second bearings 560A, 560B. The inside of the objective lens gear 558 is lined with carefully calculated threads that maximize the linear speed of the lens while also minimizing the friction and torque needed by the motor 570. The top and bottom of the objective lens housing 550 has the potentiometer wiper 552 that interacts with the potentiometer 554 on the inside of the objective lens housing 550 (i.e., linear guide/potentiometer housing). This position reading is communicated to the first micro controller which completes the PID loop. This allows for complete electronic control of the objective lens assemblies 506A, 506B. This control allows for change of the focus of the adjustment apparatus 500 so as to be adjustable for each user. In some embodiments, a liquid lens may be used to achieve the same outcome as previously discussed. For example, by changing the voltage sent to the lens, the focal point changes with the liquid lens. The voltage would be determined by the second and/or third microcontroller in the first and second pods, respectively, as it receives commands and information from the first microcontroller in the same way as with the motor being present. Similarly, in some embodiments, a voice coil may be used to achieve the same outcome as both the motor and liquid lens. For example, by changing the voltage sent to the voice coil that is housing the objective lens assembly the focal point changes. The voltage would be determined by the second and/or third microcontroller in the first and second pods, respectively, as it receives commands and information from the first microcontroller in the same way as with the motor being present.
Snap rings 574A-574C may be used to couple the internal components. While three snap rings are shown, it will be appreciated that more or less than three snap rings may be used, or any other fastening mechanism. Various internal components may be stacked together within the exterior. These sections of components may be divided and secured via the snap rings 574A-574C. This allows for each component to be installed individually, without the need for an inner core assembly, thereby decreasing overall size and weight of the adjustment apparatus 500.
The adjustment apparatus 500 may further include controls, which may include the buttons 534A-534D. The controls may turn the adjustment apparatus on/off and be capable of selecting certain modes. In some embodiments, there may be rotary switches, or other types or rotary controls, such as common potentiometers, digital encoders, or all in one solution; or there may be buttons to toggle states on both the adjustment apparatus and remote control. The wireless remote would allow a user to make on demand adjustments as needed based on the limitations of the sensor. The wireless remote may use WI-R technology or any other low frequency wireless data transmission. While the adjustable apparatus 500 is shown as binoculars, the adjustable apparatus may be configured to function as a scope, monocular, low power variable optics, etc.
The adjustment apparatus 500 with each of its components may be IP68 water proof. Other waterproofing may be found via gaskets at each seam and entry point. In some embodiments, the adjustment apparatus 500 may include a purging valve/port, which will be used to purge the adjustment apparatus 500 of humidity and oxygen.
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It will be understood that while various embodiments have been disclosed herein, other embodiments are contemplated. Further, certain embodiments of the present disclosure may include, incorporate, or otherwise comprise properties or features described in other embodiments. Consequently, various features of certain embodiments can be compatible with, combined with, included in, and/or incorporated into other embodiments of the present disclosure. Therefore, disclosure of certain features or components relative to a specific embodiment of the present disclosure should not be construed as limiting the application or inclusion of said features or components to the specific embodiment unless stated. As such, other embodiments can also include said features, components, members, elements, parts, and/or portions without necessarily departing from the scope of the present disclosure. The embodiments described herein are examples of the present disclosure. Accordingly, unless a feature or component is described as requiring another feature or component in combination therewith, any feature herein may be combined with any other feature of a same or different embodiment disclosed herein. Although only a few of the example embodiments have been described in detail herein, those skilled in the art will appreciate that modifications are possible without materially departing from the present disclosure described herein. Accordingly, all modifications may be included within the scope of this invention.
This a continuation-in-part of U.S. Non-Provisional patent application Ser. No. 18/385,515 filed on Oct. 31, 2023, which claims the benefit of U.S. Provisional Application Ser. No. 63/459,824, filed on Apr. 17, 2023, both of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 63459824 | Apr 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 18385515 | Oct 2023 | US |
| Child | 19072599 | US |