Variable focus assembly and device with cross-bearing balls

Abstract

Various embodiments described herein provide a variable focal length lens assembly. Some embodiments are designed to achieve the repositioning of one or more components such as a lens barrel assembly to adjust the focal length of the variable focal length lens assembly. Some exemplary variable focal length lens assemblies include a module base that accommodates a lens barrel assembly with a pair of positioning magnets, a pair of positioning coil assemblies associated with the positioning magnets, and at least one pair of bearing balls that movably support the lens barrel assembly. The positioning coil assembly is configured to apply various magnetic fields to reposition the lens barrel assembly together with the positioning magnet. Additional embodiments of an imaging device including at least one variable focal length lens assembly described herein are provided.

Description

Technical Field

[0001] Embodiments of the present disclosure relate generally to lens focusing assemblies for imaging devices, and in particular, to variable focus lens assemblies for small form factor imaging devices and configured for variable focus using electromagnetics. Background Art

[0002] In an imaging device, a lens is typically designed and arranged so that an object within a certain predetermined range appears in focus through the lens. An image sensor is used to capture image data representing the field of view through the lens. Typically, when an object to be imaged is beyond the focus of the lens, the lens needs to be moved to one or more other focus positions to bring the object into focus. Summary of the invention

[0003] In general, embodiments of the present disclosure provided herein include optical assemblies, variable focal length lens assemblies, and variable focal length imaging devices including one or more of such assemblies. Other specific implementations of one or more of the variable focal length lens assemblies and / or the variable focal length imaging devices will be or will become apparent to those skilled in the art upon inspection of the following figures and detailed description. All such additional specific implementations included within this specification are intended to be within the scope of the present disclosure and are protected by the following claims.

[0004] According to one aspect of the present disclosure, an optical component is provided. The optical component includes a housing, an optical member, a first pair of bearing balls, and a second pair of bearing balls. The optical member is configured to move within the housing and has two front tubular slots and two rear tubular slots. Each ball bearing in the first pair of bearing balls is accommodated in a corresponding one of the two front tubular slots and is configured to movably support the optical member within the housing at a first side of the optical member. Each ball bearing in the second pair of bearing balls is accommodated in a corresponding one of the two rear tubular slots and is configured to movably support the optical member within the housing at a second side of the optical member.

[0005] Additionally or alternatively, in at least some embodiments of the optical assembly, each of the two front tubular slots is diagonally opposite each other on the first side of the optical component. Additionally or alternatively, in at least some embodiments of the optical assembly, each of the two rear tubular slots is diagonally opposite each other on the second side of the optical component.

[0006] Additionally or alternatively, in at least some embodiments of the optical assembly, the optical assembly further comprises a wired coil plate configured to generate magnetic flux when energized. Additionally or alternatively, the optical member further comprises at least one permanent magnet located on at least a portion of the optical member, such that at all moving positions of the optical member, the at least one permanent magnet is interactively accessible to the magnetic flux generated by the wired coil plate.

[0007] Additionally or alternatively, in at least some embodiments of the optical component, the wired coil plate includes a wired coil assembly that is configured to move at least a portion of the optical component into a recessed portion defined by the wired coil plate based on a first current supplied to the wired coil assembly.

[0008] Additionally or alternatively, in at least some embodiments of the optical component, the wired coil plate includes a wired coil assembly that is configured to move at least a portion of the optical component out of a recessed portion defined by the wired coil plate based on a second current supplied to the wired coil assembly.

[0009] Additionally or alternatively, in at least some embodiments of the optical assembly, the first end of the housing is toward the front side of the optical assembly facing the scene to be imaged, and the second end of the housing is toward the rear end of the optical assembly facing the image sensor, and wherein the wired coil board is positioned toward the rear end of the optical assembly.

[0010] Additionally or alternatively, in at least some embodiments of the optical assembly, the wired coil plate includes a wired coil assembly configured to move the optical member when energized, and wherein movement of the optical member changes the focal length of the optical assembly.

[0011] Additionally or alternatively, in at least some embodiments of the optical assembly, the wired coil assembly is configured to exert an electromagnetic force on the optical member to cause the optical member to move in a direction parallel to an optical axis of the optical assembly.

[0012] Additionally or alternatively, in at least some embodiments of the optical assembly, the optical assembly further comprises a wired coil plate having a first set of windings and a second set of windings. Additionally or alternatively, in at least some embodiments of the optical assembly, the first set of windings and the second set of windings define a recessed portion therebetween to accommodate the rear portion of the optical component. Additionally or alternatively, in at least some embodiments of the optical assembly, a first plane containing the first set of windings is parallel to a second plane containing the second set of windings, and the optical axis of the optical assembly bisects a line connecting the centers of the first and second planes.

[0013] Additionally or alternatively, in at least some embodiments of the optical assembly, the optical component further includes a first permanent magnet and a second permanent magnet disposed diagonally opposite the first permanent magnet.

[0014] According to one aspect of the present disclosure, a variable focal length lens assembly is provided. The variable focal length lens assembly is configured to position at least a lens barrel assembly to a predefined number of focus positions and / or to be positioned within a set of continuous focus positions with a reduced form factor, so that the assembly can be fitted within a device base of a small form factor. In at least one exemplary embodiment, the exemplary variable focal length lens assembly includes a positioning coil plate, which includes at least a first positioning coil assembly and a second positioning coil assembly. The exemplary variable focal length lens further includes a lens barrel assembly. The exemplary variable focal length lens further includes a module base, which defines an internal module space designed to fit the lens barrel assembly, wherein the module base is designed to support the first positioning coil assembly at a first coil position and support the second positioning coil assembly at a second coil position, the first coil position being opposite to the second coil position. The exemplary variable focal length lens further includes at least one pair of bearing balls, which engage with the module base and the lens barrel assembly, wherein the first positioning coil assembly, the second positioning coil assembly and the at least one pair of bearing balls together with the lens barrel assembly define the focal length position of the lens barrel assembly.

[0015] Additionally or alternatively, in at least some embodiments of the variable focal length lens assembly, the first positioning coil assembly includes a first positioning coil. The first positioning coil is positioned around a first positioning pad, and the second positioning coil assembly includes a second positioning coil, wherein the second positioning coil is positioned around the second positioning pad. The lens barrel assembly includes a first positioning magnet located near the first positioning pad, a second positioning magnet located near the second positioning pad, and an imaging optical lens, wherein the first positioning pad, the first positioning coil and the first positioning magnet, the second positioning pad, the second positioning coil and the second positioning magnet, and the at least one pair of bearing balls define the focal length position of the lens barrel assembly.

[0016] Additionally or alternatively, in at least some such embodiments of the variable focal length lens assembly, the at least one pair of bearing balls comprises a first pair of bearing balls and a second pair of bearing balls. Additionally or alternatively, the module base and the lens barrel assembly each comprise at least two bearing slots, each bearing slot being designed so that the ball bearings of the corresponding pair of bearing balls can engage each of the module base and the lens barrel assembly through the corresponding bearing slot.

[0017] Additionally or alternatively, in at least some such embodiments of the variable focal length lens assembly, the module base and the lens barrel assembly each include a first bearing slot and a second bearing slot, each of the first bearing slots being positioned opposite one of the second bearing slots. Additionally or alternatively, the at least one pair of bearing balls includes a first pair of bearing balls and a second pair of bearing balls. Each ball bearing of the first pair of bearing balls engages with the module base and the lens barrel assembly via each of the first bearing slots, and each ball bearing of the second pair of bearing balls engages with the module base and the lens barrel assembly via each of the second bearing slots.

[0018] Additionally or alternatively, in at least some such embodiments of the variable focal length lens assembly, the focal position of the lens barrel assembly includes a first focal position when the positioning coil plate is in a first energized state, a second focal position when the positioning coil plate is in a second energized state, and a default focal position when the positioning coil plate is in a non-energized state.

[0019] Additionally or alternatively, in at least some such embodiments of the variable focal length lens assembly, the focal length position of the lens barrel assembly includes a default focal length position when the positioning coil plate is in a non-energized state, and at the default focal length position, the first positioning pad is aligned with the first positioning magnet and the second positioning pad is aligned with the second positioning magnet. Additionally or alternatively, in at least some such embodiments of the variable focal length lens assembly, the default focal length position is based on a default focus range.

[0020] According to another aspect of the present disclosure, a multi-sensor imaging device is provided. The multi-sensor imaging device is configured for a variable focal length as disclosed herein. The multi-sensor imaging device includes a variable focal length lens assembly, at least one additional lens assembly, and a device base configured to at least accommodate the variable focal length lens assembly and the at least one additional lens assembly. The variable focal length lens assembly of the multi-sensor imaging device includes a first positioning coil assembly including a first positioning coil, wherein the first positioning coil is positioned around a first positioning pad. The variable focal length lens assembly of the multi-sensor imaging device further includes a second positioning coil assembly including a second positioning coil, wherein the second positioning coil is positioned around a second positioning pad. The variable focal length lens assembly of the multi-sensor imaging device further includes a lens barrel assembly, which includes a first positioning magnet located near the first positioning pad, a second positioning magnet located near the second positioning pad, and an imaging optical lens. The variable focal length lens assembly of the multi-sensor imaging device further includes a module base, which defines an internal module space designed to cooperate with the lens barrel assembly, and the module base is designed to support the first positioning coil assembly at a first coil position and the second positioning coil assembly at a second coil position, the first coil position is opposite to the second coil position, and the first coil position is diagonally opposite to the second coil position. The variable focal length lens assembly of the multi-sensor imaging device further includes at least one pair of bearing balls engaged with the module base and the lens barrel assembly. The first positioning coil assembly and the first positioning magnet together with the second positioning coil assembly and the second positioning magnet and the at least one pair of bearing balls define the focal length position of the lens barrel assembly.

[0021] Additionally or alternatively, in at least some such embodiments of the multi-sensor imaging device, the module base and the lens barrel assembly each include a first bearing slot and a second bearing slot, each of the first bearing slots being positioned opposite one of the second bearing slots. Additionally or alternatively, the at least one pair of bearing balls includes a first pair of bearing balls and a second pair of bearing balls. The first pair of bearing balls engages with the module base and the lens barrel assembly via each of the first bearing slots, and the second pair of bearing balls engages with the module base and the lens barrel assembly via each of the second bearing slots.

[0022] Additionally or alternatively, in at least some such embodiments of the multi-sensor imaging device, the multi-sensor imaging device further comprises a first image sensor and at least one second image sensor. The first image sensor is positioned along the optical axis of the variable focal length lens assembly, and the at least one second image sensor is positioned along the optical axis of the at least one additional lens assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Having thus generally described embodiments of the present disclosure, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and in which:

[0024] Figure 1A shows a block diagram of an exemplary multi-sensor imaging system according to an exemplary embodiment of the present disclosure;

[0025] Figure 1B An exemplary optical lens assembly according to at least one exemplary embodiment of the present disclosure is shown;

[0026] FIG. 2A to FIG. 2D showing various views of an assembled exemplary variable focus lens assembly according to at least some exemplary embodiments of the present disclosure;

[0027] FIG. 3A to FIG. 3C showing various cross-sectional views of the interior of an exemplary variable focal length lens assembly according to at least one exemplary embodiment of the present disclosure;

[0028] Figure 4A and Figure 4B shows design details of an exemplary optical component embodied as a lens barrel assembly according to at least one exemplary embodiment of the present disclosure;

[0029] FIG. 5A to FIG. 5C A perspective view showing a module base of an exemplary variable focal length lens assembly according to at least one exemplary embodiment of the present disclosure;

[0030] Figure 6 shows various design details of an exemplary positioning coil plate according to at least one exemplary embodiment of the present disclosure;

[0031] Fig. 7A and Figure 7B shows an exemplary visualization of light traversing through an exemplary variable focal length lens assembly for capture by an associated image sensor in accordance with at least one exemplary embodiment of the present disclosure;

[0032] Fig. 8A , Figure 8B and Figure 8C each showing an exemplary visualization of a lens barrel assembly positioned at different focal length positions according to at least one exemplary embodiment of the present disclosure;

[0033] Fig. 9A , Fig. 9B and Fig. 9C each showing a visualization of an image data object including representations of various visually encoded indicia captured by an image sensor using a variable focal length lens assembly having a lens barrel assembly positioned at different focal length positions according to at least one exemplary embodiment of the present disclosure;

[0034] Fig. 10A shows a magnetic force applied by each of a pair of coil positioning assemblies associated with a pair of positioning magnets of a variable focal length lens assembly when the pair of coil positioning assemblies are in a non-energized state according to at least one exemplary embodiment of the present disclosure;

[0035] Fig. 10B shows a magnetic force applied by each of a pair of coil positioning assemblies associated with a pair of positioning magnets of a variable focal length lens assembly when the pair of coil positioning assemblies are in a first powered state according to at least one exemplary embodiment of the present disclosure;

[0036] Fig.11 illustrates an exemplary distribution of forces associated with displacement of a lens barrel assembly from a neutral focus position in accordance with at least one exemplary embodiment of the present disclosure;

[0037] Fig.12 shows a perspective view of an exemplary variable focus multi-sensor imaging engine including a variable focus lens assembly according to at least one exemplary embodiment of the present disclosure;

[0038] Fig.13 Another perspective view of an exemplary variable focus multi-sensor imaging engine including a variable focus lens assembly is shown according to at least one exemplary embodiment of the present disclosure;

[0039] Fig.14A , Fig. 14B and Fig. 14C Various views of an exemplary variable focal length multi-sensor imaging device are shown according to at least some exemplary embodiments of the present disclosure;

[0040] Fig.15 An exemplary imaging device including a device base modified to implement a housing for an exemplary variable focal length lens assembly is shown according to at least some exemplary embodiments of the present disclosure;

[0041] Fig.16 shows a perspective view of an exemplary mobile variable focal length multi-sensor imaging device including at least one variable focal length lens assembly according to at least one exemplary embodiment of the present disclosure;

[0042] Fig.17 A flow chart depicting exemplary operations of an exemplary process for assembling a variable focal length lens assembly in accordance with at least one exemplary embodiment of the present disclosure is shown;

[0043] Fig.18A flowchart depicting exemplary operations of an exemplary process for assembling a lens barrel, a pair of positioning magnets, and an imaging lens to form a lens barrel assembly is shown in accordance with at least some exemplary embodiments of the present disclosure; and

[0044] Fig.19 A flow chart depicting example operations of an example process 1900 for assembling a localization coil assembly is shown, in accordance with at least some example embodiments of the present disclosure. DETAILED DESCRIPTION

[0045] Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments of the present disclosure are shown. Indeed, embodiments of the present disclosure can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will satisfy applicable legal requirements. Throughout the text, like reference numerals refer to like elements.

[0046] The imaging device is configured to enable one or more image capture and processing tasks to be performed. For example, in at least some exemplary contexts, the imaging device is configured to enable reading of symbols, such as one or more barcodes, QR codes, data matrices, etc. Typically, such imaging devices include one or more imagers that are used to capture image data objects representing a specific field of view defined by the imager. For example, the imager may include one or more image capture optics (such as one or more lens assemblies) coupled to an image sensor, the image sensor being configured to capture light that passes through the image capture optics to interact with the image sensor. In this regard, the lens assembly may define a specific field of view to be captured by the associated image sensor, and / or may define a specific focus range so that the image sensor captures a clear and / or otherwise optimally processed image data object at and / or near the focus range. Such an imager may be associated with an illuminator of the imaging device and / or associated with the imaging device, for example including an illumination projection lens and an associated illumination source that provides light to illuminate the field of view to be captured.

[0047] A variable focal length lens assembly enables the focus range to be adjusted to one or more different focus ranges. By adjusting the focus range, the effective range over which the lens assembly can be used to capture image data objects that are sufficiently sharp and / or well defined to be successfully processed for a particular image processing task can be improved. For example, a variable focal length lens that can be adjusted between a first focus range and a second focus range can be used to capture image data objects sufficient for processing without having to reposition the object to be scanned and / or the imaging device itself. In order to provide the ability to change focus, conventional implementations for variable focus remain bulky, slow, and / or susceptible to damage from one or more environmental effects. In this regard, conventional variable focal length lenses are generally not suitable for small form factors and mobile imaging devices, and / or cannot physically fit within such devices for use.

[0048] In the context of a mobile imaging device, for example, the imaging device and each of its components must remain functional, perform quickly, and have a sufficiently small form factor for use in a mobile context. For example, in the context of an imaging device to be integrated within a cell phone or other limited form factor device, the imaging device is limited based on the limited size of the cell phone mobile device base (typically about 7 mm). Similarly, in this regard, the components of the imaging device are each limited by the even smaller form factor of the imaging device in order to operate in such a context.

[0049] Conventional variable focal length lens implementations have limitations that are not suitable for small form factor devices. For example, conventional voice coil motor focusing is highly sensitive to vibration and shock, making it useful in the context of mobile imaging devices where such vibration and shock due to user handling and / or transportation are possible. In addition, for example, liquid lens focusing is limited by large component sizes that are not suitable for such small form factor mobile imaging device contexts. In addition, for example, linear piezo motor focusing suffers from slow response rates that are not suitable for such small form factor mobile imaging devices. In this regard, in the context of mobile imaging devices, each conventional implementation for variable lens focusing functionality cannot be reliably compressed into a sufficiently small form factor, and / or suffers from a low response rate.

[0050] Even in other imaging devices, there is a need to move optical components configured for focusing in a seamless and rapid manner without incurring a large amount of energy consumption. For example, imaging devices for indicia reading are often powered by batteries. Available onboard power is scarce and needs to be utilized judiciously to support the operation of the device over a longer period of time. Therefore, every power consumption in such battery-powered devices should be optimized to enhance battery life and reduce the requirement for frequent charging. With regard to focusing components, it is desirable to spend as little power as possible on moving the focusing components. However, conventional mobility mechanisms utilize rollers and similar bearings to support the mobility of optical components such as lenses. However, such mobility mechanisms are impaired by inherent friction that increases over time and use. This results in a poor response to the rapid focus arrangement of the lens, often leaving the object to be imaged out of focus. Therefore, the availability of such devices is limited, and they require frequent maintenance and upgrades.

[0051] Embodiments herein provide a variable focal length lens assembly. Embodiments include a variable focal length lens assembly, which includes a lens barrel assembly positioned based on the interaction between one or more positioning magnets and one or more positioning pads. In some such embodiments, each positioning magnet in a pair of positioning magnets is associated with a positioning pad in a pair of positioning pads. Positioning pads are each associated with a positioning coil, which is configured to receive an electric charge that powers the positioning coil. The powered positioning coil is configured to generate a magnetic force that is applied to reposition the lens barrel assembly to a new focal length position. In this regard, the lens barrel assembly is positioned based on the power-on state of each positioning coil. Such specific implementations quickly reposition the lens barrel assembly so that the variable focal length lens assembly is quickly refocused (e.g., within a desired threshold), is not susceptible to vibration, and can be implemented as having a sufficiently small form factor for use in a mobile context. Therefore, embodiments of an imaging device can utilize one or more variable focal length lens assemblies, such as one or more lens assemblies in a multi-sensor environment.

[0052] Such exemplary variable focal length lens assemblies provide sufficient reliability, compact size, low power consumption, and high speed response for use in small form factor imaging devices. In this regard, such variable focal length lens assemblies may be implemented in one or more imaging devices to improve the effective range over which the imaging device can capture image data objects for successful processing. It should be understood that while several embodiments are described with respect to mobile imaging devices, such embodiments may similarly be implemented in one or more non-mobile imaging devices. In some such embodiments, the embodiments may not be limited to small form factors, but may use structures similar to those described herein.

[0053] definition

[0054] The term "imaging device" refers to one or more hardware and / or software components configured to capture image data objects for processing. In some embodiments, the imaging device includes at least one illuminator source and / or corresponding optics configured to provide illumination onto the field for capture. A non-limiting example of an imaging device is a "multi-sensor imaging device", which refers to an imaging device comprising a plurality of image sensors each configured to enable capture of image data objects, and

[0055] The term "power" refers to providing electrical current to circuits, components and / or electrical conductors.

[0056] The term "locating coil" refers to an electrical conductor wound into a coil shape and configured to generate a magnetic field when the locating coil is powered. The locating coil defines a "coil interior area" which refers to the open area between the locating coils defined by the wound locating coils.

[0057] The term "locating coil assembly" refers to a locating coil connected to at least a flexible member for connecting the locating coil to a module base and / or a coil power supply circuit.

[0058] The term "coil power circuit" refers to hardware configured to provide electrical current to one or more locating coil assemblies. In some exemplary contexts, the coil power circuit includes at least one power source connected to the one or more locating coil assemblies.

[0059] The term "power-on state" refers to the value of the current that powers each of the pair of localization coil assemblies. In the exemplary context, the power-on state represents the value of the sign of the current that powers each of the pair of localization coil assemblies. The term "non-power-on state" refers to the value of the current that does not power each of the pair of localization coil assemblies.

[0060] The term "imager" or "imaging module" refers to one or more components configured to capture an image representing a particular field of view. In at least one exemplary context, the imager includes at least one optical component (e.g., a lens and / or associated housing) that defines the particular field of view. Additionally or alternatively, in at least one exemplary context, the imager includes an image sensor configured to output an image based on light, such as that engaged with the image sensor via the optical component.

[0061] The term "image sensor" refers to one or more components configured to generate an image represented by a data object based on light incident on the image sensor. In some such exemplary contexts, the image sensor converts light waves interacting with the image sensor into signals representing an image output by the sensor.

[0062] The term "imaging optical lens" refers to one or more lenses and / or supporting optical components that define an aperture that enables light to be received by an image sensor associated with the imaging optical lens. In some embodiments, the imaging optical lens is formed entirely of glass, entirely of plastic, an optical liquid material, and / or any combination thereof.

[0063] The term "lens barrel assembly" refers to a component associated with a corresponding image sensor that includes at least an imaging optical lens and a lens housing. In some embodiments, as described herein, the lens barrel assembly includes one or more defined areas to support positioning magnets.

[0064] The term "locating magnet" refers to a magnet included in a lens barrel assembly to enable the focal position of the lens barrel assembly to be shifted. In some embodiments, the lens barrel assembly includes a pair of locating magnets designed to interact with one or more associated components (such as a pair of locating coil assemblies and / or locating pads) to change the focal position of the lens barrel lens assembly as described herein. Non-limiting examples of locating magnets include electroplated neodymium magnets, including but not limited to zinc-plated magnets, nickel-plated magnets, and / or other protective coatings.

[0065] The term "locating pad" refers to a magnetic material designed to fit within the coil interior area of ​​a locating coil. In an exemplary context, the locating pad is shaped as a cube. The locating coil assembly is positioned adjacent to a locating magnet associated with the locating pad. In this regard, in some contexts, a pair of symmetrical locating pads are positioned relative to each other, each of which is associated with a locating coil assembly in a pair of locating coil assemblies, and the pair of locating coil assemblies are positioned relative to each other so that when the locating coil assembly is in a non-energized state, the locating pad is aligned with the locating magnet. The term "iron locating pad" refers to a locating pad specifically formed of iron, including an iron coating, and / or formed mostly of iron.

[0066] The term "module base" refers to a housing configured to enable positioning and / or alignment of one or more components of a variable focus lens assembly. Additionally or alternatively, in some embodiments, the module base enables one or more of the components to be connected to corresponding power circuits and / or processing circuits.

[0067] The term "coil position" refers to the position of a positioning coil relative to an associated lens barrel assembly. In some embodiments, for example, a first positioning coil is positioned at a first coil position located on the top of an associated lens barrel assembly, and a second positioning coil is positioned at a second coil position located on the bottom of the associated lens barrel assembly, such that the first coil position is opposite the second coil position.

[0068] With respect to the positioning coil assembly, the term "positioning area" refers to a defined portion of the module base designed to support the positioning coil assembly, including a positioning pad within the coil interior area. In some embodiments, the module base includes a first coil position and a second coil position to support a pair of positioning coil assemblies, the first coil position being opposite to the second coil position so that the pair of coil assemblies generate a magnetic force to move the lens barrel assembly along the longitudinal axis.

[0069] The term "internal module space" refers to the void of the space defined by the inner wall of the module base and / or other support structures. In some embodiments, the internal module space is sufficiently defined to fit the lens barrel assembly and / or corresponding positioning and / or alignment components.

[0070] The term "bearing slot" refers to a space in a component defined by an outer boundary designed to receive and / or movably secure a ball bearing. In at least one exemplary context, a bearing slot opening defines a spherical, tubular, or cylindrical space configured to receive a ball bearing.

[0071] The term "ball bearing" refers to metal, semi-metal or non-metal solid balls and / or other round rollers designed to engage the bearing slot opening of a component. In at least one exemplary context, the ball bearing is designed to engage the bearing slot opening by sliding into the bearing slot opening.

[0072] The term "focal position" refers to the position of the lens barrel assembly within the internal module space of the module base. In this regard, in an exemplary context, the focal position of the lens barrel assembly refers to a displacement from a default position and / or an absolute position along the longitudinal axis. In an exemplary context, the focal position of the lens barrel assembly is changed based on the value of power applied to one or more positioning coil assemblies.

[0073] The term "front position limit" refers to the focal length position of the inner wall closest to the front of the module base. In some embodiments, the front position limit is defined by the inner wall of the front of the module base itself. In other embodiments, the front position limit is defined by one or more front limiting components.

[0074] The term "rear position limit" refers to the focal length position of the inner wall closest to the rear of the module base. In some embodiments, the rear position limit is defined by the inner wall of the rear of the module base itself. In other embodiments, the rear position limit is defined by one or more rear limiting components.

[0075] The term "focus range" refers to an optimal distance between a lens barrel assembly and / or imaging device and a field for bringing the field into focus. In at least one exemplary context, when the focal length position of the lens barrel assembly changes, the focus range also changes. The term "default focus range" refers to a specific focus range that is predetermined as the most likely distance between the lens barrel assembly and / or imaging device and a field for an intended use, such as for detecting, capturing, and / or decoding two-dimensional and / or three-dimensional symbols.

[0076] The term "default focal position" refers to the focal position of the lens barrel assembly when each of a pair of positioning coil assemblies is in a non-energized state. In an exemplary context, the default focal position aligns each positioning magnet of the lens barrel assembly with an associated positioning pad.

[0077] The term "predetermined focal position" refers to a discrete value of a focal position from a set of possible focal positions. For example, in at least one exemplary context, a variable focal length lens assembly is designed based on a set of 3-state focal positions: a first focal position for a first energized state (e.g., positive current), a second focal position for a second energized state (e.g., negative current), and a third focal position for a non-energized state (e.g., no current).

[0078] The term "continuous focus positions" refers to values ​​of focus positions from a continuous focus position range defined by a maximum focus position and a minimum focus position. In at least one exemplary context, the continuous focus positions reflect values ​​based on power values ​​provided to the pair of localization coil assemblies.

[0079] The term "near focal position" refers to the value of the focal position of the focusing lens barrel assembly for a predetermined focusing range below a predetermined threshold. The term "far focal position" refers to the value of the focal position of the focusing lens barrel assembly for a second predetermined focusing range above a predetermined threshold. The term "neutral focal position" refers to the value of the focal position of the focusing lens barrel assembly for a third predetermined focusing range equal to the predetermined threshold.

[0080] The term "matte dark surface" refers to a surface that reflects less than a predetermined threshold percentage of received light in a specular direction. In some embodiments, the matte dark surface has a sufficiently dark color to minimize specular light.

[0081] The term "magnet surface epoxy" refers to a coating for a positioning magnet that provides a matte dark surface along at least one surface of the positioning magnet.

[0082] The term "lens mount" refers to one or more structural components and / or hardware that secures the position and / or alignment of a variable focus lens within an imaging device. In some embodiments, a device base of the imaging device includes a defined space that engages the variable focus lens such that an outer wall of the defined space includes a lens mount.

[0083] The term "visually coded indicia" refers to a rendered, printed, and / or otherwise visible representation of one or more symbols configured for scanning by an imaging device. Non-limiting examples of visually coded indicia include 2D barcodes, UPCs, Quick Response Codes, Data Matrix, and custom coded images.

[0084] Figure 1A 1 is a block diagram of an exemplary multi-sensor imaging system 10 (hereinafter, also referred to as imaging system 10) according to an exemplary embodiment of the present disclosure. The multi-sensor imaging system 10 includes an imaging engine 100 communicatively coupled to a controller 20, a communication interface 40, an activation component 60, and one or more peripheral components 80. In some exemplary embodiments, the imaging system 10 may include a plurality of Figure 1A The imaging system 10 is configured to capture one or more images of a target in one or more fields of view using one or more illumination sources. The imaging system 10 processes the one or more images to perform one or more image processing tasks, such as indicia reading. Thus, in some exemplary embodiments of the present disclosure, the imaging system 10 may be embodied in part or in whole as a indicia or symbol reader or a handheld device capable of reading indicia and similar symbols. Figures 12 to 16 Several exemplary embodiments of the imaging system 10 are shown, the details of which will be described in subsequent portions of this disclosure.

[0085] The controller 20 may be configured to perform one or more control operations associated with the imaging system 10. For example, the controller 20 may control the imaging engine 100 to cause an image capture of a target in the field of view of the imaging engine 100. Additionally, the controller 20 may process the captured image to perform one or more image processing tasks. The controller 20 may be embodied as a central processing unit (CPU) including one or more processors and a memory. In some exemplary embodiments, the controller 20 may be implemented as one or more of various hardware processing devices using one or more microcontroller units (MCUs), such as a coprocessor, a microprocessor, a digital signal processor (DSP), a processing element with or without an accompanying DSP, or various other processing circuits, including integrated circuits, such as, for example, ASICs (application specific integrated circuits), FPGAs (field programmable gate arrays), hardware accelerators, dedicated computer chips, etc. In some embodiments, the processor of the controller 20 may include one or more processing cores that are configured to operate independently. A multi-core processor may implement multiple processing within a single physical package. Additionally or alternatively, the processor may include one or more processors configured in tandem via the bus to enable independent execution of instructions, pipelining, and / or multithreading.

[0086] The memory may be non-transitory and may include, for example, one or more volatile memories and / or non-volatile memories. For example, the memory may be an electronic storage device (e.g., a computer-readable storage medium) comprising a gate configured to store data (e.g., bits) that can be retrieved by a machine (e.g., a computing device such as a processor). The memory may be configured to store information, data, content, applications, instructions, etc. for enabling the device to perform various functions according to exemplary embodiments of the present invention. For example, the memory may be configured to buffer data for processing by the processor. Additionally or alternatively, the memory may be configured to store instructions for execution by the processor.

[0087] The processor (and / or a coprocessor or any other processing circuit that assists the processor or is otherwise associated with the processor) can communicate with the memory via a bus for transferring information between components of the imaging system 10. The processor can be configured to execute instructions stored in the memory or otherwise accessible to the processor. Additionally or alternatively, the processor can be configured to perform hard-coded functions. Therefore, whether configured by hardware methods or software methods, or by a combination of them, the processor can represent an entity (e.g., physically embodied in the form of a circuit) that can perform operations according to an embodiment of the present invention while being configured accordingly. Therefore, for example, when the processor is embodied as an ASIC, FPGA, etc., the processor can be a specially configured hardware for performing the operations described herein. Alternatively, for example, when the processor is embodied as an executor of software instructions, the instructions can specifically configure the processor to perform the algorithms and / or operations described herein when executing the instructions. Among other things, the processor may also include a clock, an arithmetic logic unit (ALU), and logic gates configured to support the operation of the controller 20.

[0088] The communication interface 40 may include an input interface and an output interface for supporting communication to and from the imaging system 10. The communication interface 40 may be any device, such as a device or circuit embodied in hardware or a combination of hardware and software, which is configured to receive and / or transmit data to / from a communication device that communicates with the imaging system 10. In this regard, the communication interface 40 may include, for example, an antenna (or multiple antennas) and support hardware and / or software for implementing communication with a wireless communication network. Additionally or alternatively, the communication interface 40 may include circuits for interacting with the antenna to cause the transmission of signals via the antenna or processing the reception of signals received via the antenna. In some environments, the communication interface 40 may alternatively or additionally support wired communication. Thus, for example, the communication interface 40 may include a communication modem and / or other hardware and / or software for supporting communication via cable, digital subscriber line (DSL), universal serial bus (USB) or other mechanisms.

[0089] The activation component 60 may include hardware, software, firmware, and / or a combination thereof configured to instruct a user to initiate (and / or terminate) a desired function. For example, the activation component 60 may transmit an activation signal to cause the controller 20 to start the operation of the imaging engine 100, such as starting illumination by one or more illumination sources, adjusting the focus, and / or capturing one or more images by the image sensor. Additionally or alternatively, the activation component 60 may transmit a deactivation signal to the controller 20 to terminate the corresponding function, such as stopping scanning via the image sensor. In some embodiments, the activation component 60 is embodied as one or more buttons, triggers, and / or other physical components disposed in or on the body of the base. For example, in at least one exemplary context, the activation component 60 is embodied as one or more "trigger" components, and when the operator engages these trigger components (e.g., when the operator squeezes the trigger), the trigger component transmits a signal to the controller 20 to initiate the corresponding function. In some such embodiments, when the operator disengages the component (e.g., when the operator releases the trigger), the activation component may transmit a deactivation signal to the controller 20 to stop such function. Alternatively or additionally, in at least some embodiments, the activation component 60 is embodied without any components that are directly engaged by an operator. For example, when the imaging system 10 is embodied as an imaging device, the activation component 60 may be embodied as hardware and / or software, or a combination thereof, for detecting that the imaging device has been raised and / or positioned to a predefined "scanning" position, and / or lowered from that position to trigger deactivation. Alternatively or additionally, the activation component 60 may be embodied as a user interface element of the imaging system 10. In such embodiments, the activation component 60 embodied as a user interface element may be configured to receive input from a user on the user interface, and then transmit a corresponding command to the controller 20.

[0090] The one or more peripheral components 80 include other structural and functional elements of the imaging system 10, such as, for example, a display device, a user interface, a housing, a base, a power supply, etc. One or more of the peripheral components 80 may be controlled by the controller and may operate according to instructions or controls provided by the controller 20.

[0091] In some example embodiments, the imaging engine 100 may be embodied as an optical assembly including one or more sub-engines for image capture in a particular field of view. In this regard, in some example embodiments, the imaging engine may include a variable focal length lens assembly as a primary engine for image capture in a far field of view of the imaging system 10, and additionally or optionally include a near-field imaging engine as a secondary engine for image capture in a near field of view. The near-field engine may be a conventional imager suitable for near-field imaging. Throughout this disclosure, unless otherwise specified in a particular context, the imaging engine and the variable focal length lens assembly will mean the same and may be referred to using the same numbers.

[0092] Figure 1B Shown is an exploded view of an exemplary variable focal length lens assembly according to at least some exemplary embodiments of the present disclosure. Variable focal length lens assembly 100 comprises module base 102, lens barrel assembly 104, a pair of front bearing balls 108A, a pair of rear bearing balls 108B, front stopper 106, retainer cover 110, rear stopper 112 and positioning coil plate 114. Module base 102 is specifically designed to limit internal module space. Internal module space is designed to cooperate with lens barrel assembly 104 so that lens barrel assembly 104 can be positioned in the internal module space of module base 102. Module base 102 can further include holes at the front and rear of module base 102 so that light can pass through the holes and lens elements of lens barrel assembly 104.

[0093] The lens barrel assembly 104 includes a lens barrel that houses one or more optical components (such as one or more image lenses and / or other lens elements) to define a specific field of view. In this regard, the lens barrel assembly 104 is designed to include a front hole and a rear hole to enable light to pass through the lens barrel assembly 104 to one or more other components (e.g., an image sensor as described herein). In addition or alternatively, in some embodiments, the lens barrel assembly 104 includes one or more positioning magnets for positioning the lens barrel assembly 104, as described herein. For example, as shown, the lens barrel assembly 104 includes a top positioning magnet located on the top of the lens barrel assembly 104 and a bottom positioning magnet located on the bottom of the lens barrel assembly 104. The lens barrel housing may include a plurality of bearing ball slots engraved therein, each bearing ball slot having an associated bearing ball slot opening configured to receive a bearing ball. Each of the bearing ball slots can be configured to support rolling and sliding movement of a corresponding bearing ball therein, so that the lens barrel can slide laterally along the optical axis of the assembly 100. In some exemplary embodiments, one or more of the bearing ball slots on the lens barrel assembly 104 can be engraved into a hollow semi-cylindrical shape, such as Figure 4A and Figure 4B shown.

[0094] Positioning coil plate 114 comprises hardware and / or circuit configured to receive electric charge.Electric charge is one or more positioning coils of at least one positioning coil assembly of positioning coil plate 114 powered.In this regard, for example, as shown in the figure, positioning coil plate 114 comprises top positioning coil assembly 116A and bottom positioning coil assembly 116B, and this top positioning coil assembly and this bottom positioning coil assembly are positioned relative to each other.In some such embodiments, positioning coil plate 114 is designed to receive the electric current applied to power each positioning coil assembly thereof.As shown in the figure, positioning coil plate 114 is designed to extend the top positioning coil assembly 116A of positioning coil plate 114 above at least a portion of the head space of module base 102, for example to interact with the top positioning magnet of lens barrel assembly 104.Similarly, as shown in the figure, positioning coil plate 114 is designed to extend the bottom positioning coil assembly 116B of positioning coil plate 114 above at least a portion of the bottom space of module base 102.

[0095] The module base 102 may include a base specifically designed to house and support the various components of the variable focus lens assembly 100. In this regard, in some exemplary embodiments, the module base 102 may be a modular structure and assembled as a housing for the components to be housed therein. The module base 102 may include any suitable material capable of supporting structural integrity while adding minimal weight and space constraints to the variable focus lens assembly 100. In some exemplary embodiments, the module base 102 may be made of a suitable polymer or fiber, with embedded metal supports where necessary. The module base 102 may also include a plurality of bearing ball slots, each bearing ball slot having a slot opening configured to receive a bearing ball. In some exemplary embodiments, one or more of the bearing ball slots on the module base 102 may be engraved into a hollow semi-cylindrical shape, such as FIG. 5A to FIG. 5C Reference will be made to the disclosure of FIG. 5A to FIG. 5C A detailed description of the structural and operational aspects of the module base 102 is described.

[0096] The variable focal length lens assembly 100 may further include at least one pair of bearing balls. Figure 1BIn the example shown, the variable focus lens assembly 100 includes a pair of front bearing balls 108A and a pair of rear bearing balls 108B. In some exemplary embodiments, without limitation, it may be preferred that the variable focus lens assembly 100 includes four bearing balls, each pair of bearing balls being arranged crosswise with another pair of bearing balls. Having such a configuration provides sufficient mobility support to components such as the lens barrel assembly 104 that engages with the bearing balls while minimizing frictional impact. For example, a full ball bearing having balls between the bearing races on either side of the lens barrel assembly 104 may be damaged by more friction than if there were four bearing balls. Moreover, two pairs of crossed bearing balls are sufficient to provide minimal friction movable support to the lens barrel assembly 104. Therefore, some exemplary embodiments of the present disclosure may involve configurations having two pairs of crossed bearing balls, such as Figure 5C Regardless of the count of the balls, each of the bearing balls can be received by a corresponding full slot defined by one of the bearing ball slots of the lens barrel assembly 104 and the bearing ball slot of the module base 102. In such a configuration, the hollow semi-cylindrical shapes of each of the bearing ball slots of the lens barrel assembly 104 and the module base 102 can together define a recess in which the bearing ball is movably positioned so that the lens barrel assembly 104 can move on the bearing ball.

[0097] For example, relative to Figures 2A to 2DAs depicted, the bearing balls and bearing ball slots in the lens barrel assembly 104 and the module base 102 are positioned and aligned with each of the lens barrel assembly 104 and the module base 102. In this regard, in some embodiments, the bearing balls 108A and 108B achieve axial alignment of the lens barrel assembly 104 and one or more additional components (e.g., the module base 102). The lens barrel assembly 104 can be designed to pass through the bearing balls 108A and 108B to reposition the lens barrel assembly 104 within the internal module space defined by the module base 102. For example, in this regard, the positioning coil plate 114 can interact with the lens barrel assembly 104 so that the magnetic force obtained by the power supply is applied to the lens barrel assembly 104. In at least one exemplary context, the positioning coil assembly 116A and 116B of the positioning coil plate 114 are powered to cause a magnetic force to be applied to the lens barrel assembly 104, which interacts with the default magnetic force between the lens barrel assembly 104 and the positioning coil plate 114. The magnetic force causes the lens barrel assembly 104 to translate along the optical axis to a new focal length position, so that the lens barrel assembly 104 is positioned in different ways within the internal module space defined by the module base 102. That is, the magnetic force from the positioning coil plate 114 provides a push or pull effect on the lens barrel assembly 104, which in turn causes the lens barrel assembly 104 to slide on the bearing balls 108A and 108B positioned in the corresponding bearing slots. Since the module base 102 is immovable relative to the positioning coil plate 114, the push or pull effect is exhibited by the lens barrel assembly 104. For the lens barrel assembly 104 within the module space defined by the module base 102 , the front of the module base 102 defines a front position limit, and the rear of the module base 102 defines a rear position limit.

[0098] like Figure 1B As shown, some embodiments include one or more additional components, and / or may modify one or more components to define position limits of the lens barrel assembly within the module base. In this regard, the components may define the most forward position to which the lens barrel assembly can move within the internal module space defined by the module base (e.g., a front position limit representing a position closest to the front of the module base), and / or the most rearward position to which the lens barrel assembly can move within the internal module space defined by the module base (e.g., a rear position limit representing a position closest to the rear of the module base).

[0099] The front stopper 106 may be an annular element configured to be mounted on the front of the module base 102 to prevent the lens barrel assembly 104 from moving beyond the most forward position during operation of the variable focal length lens assembly 100. In other uses, the front stopper 106 may be removably attached to the front of the module base 102 so that the front stopper 106 may be removed to allow maintenance of the lens barrel assembly 104. The retainer cap 110 may be another annular element having a shape similar to that of the lens barrel assembly 104 and having a diameter slightly larger than that of the lens barrel assembly 104. The retainer cap 110 defines a passage for the middle section of the lens barrel assembly 104 so that the optical axis of the lens barrel assembly 104 and the optical axis of the corresponding image sensor of the variable focal length lens assembly 100 are aligned with the minimum possible deviation between them. The rear stopper 112 may be an annular element configured to be mounted toward the rear of the module base 102 to prevent the lens barrel assembly 104 from moving beyond the first maximum focus position during operation of the variable focal length lens assembly 100. The back stop 112 may be secured to a groove or recess in the positioning coil plate 114 so that the back stop acts as an optical guide for light passing from the aperture and lens barrel assembly 104 to the image sensor.

[0100] FIG. 2A to FIG. 2D Various views of a variable focal length lens assembly 100 are shown. Specifically, Figure 2A An assembled view 100A of the variable focus lens assembly 100 is depicted. Figure 2B The variable focus lens assembly 100 is shown from a front perspective view 100B. Figure 2C A first orthogonal view 100C of the top of the variable focus lens assembly 100 is depicted. Figure 2D A second orthogonal view 100D of the side of the variable focus lens assembly 100 is depicted.

[0101] As shown, the lens barrel assembly 104 is positioned in the internal module space defined by the module base 102. The positioning coil plate 114 includes a pair of positioning coil assemblies 116A, 116B, which are located on the opposite sides (specifically, top and bottom) of the module base 102 for interacting with the lens barrel assembly 104. In this regard, the lens barrel assembly 104 is engaged with the bearing balls 108A and 108B so that the lens barrel assembly 104 can pass through or otherwise slide along the optical axis of the lens barrel assembly 104. For example, the lens barrel assembly 104 can be repositioned based on the magnetic force generated by the positioning coil plate 114. When in the powered-on state, the top positioning coil assembly and the bottom positioning coil assembly of the positioning coil plate 114 generate a magnetic force, which interacts with the default magnetic force between the magnets of the lens barrel assembly to reposition the lens barrel assembly 104 forward or backward from the default position.

[0102] Additionally or alternatively, some embodiments include one or more components for mounting the variable focal length lens assembly within and / or connected to one or more devices (such as one or more imaging devices, test devices, etc.). For example, some embodiments include a lens mount for mounting the variable focal length lens assembly 100 to one or more associated devices. The lens mount may define an inner mounting space in which the variable focal length lens assembly may be mounted. Additionally or alternatively, the lens mount may include one or more components (such as pins, slot configurations, snap-on configurations, etc.) or other components to secure the variable focal length lens assembly 100 to the lens mount. Additionally or alternatively, the lens mount may include one or more elements for attaching to an imaging device, a test device, etc. Non-limiting examples of lens mounts include any of a plurality of known industrial cameras that accept an M12 threaded lens (such as a micro video lens). It should be understood that in other embodiments, a variable focal length lens assembly (such as the variable focal length lens assembly 100) may be mounted directly to an imaging device, a test device, etc. without the use of a lens mount. For example, as described herein, an imaging device may be designed to directly couple a variable focus lens assembly to one or more other components (such as a processor, etc.) within a device chassis of the imaging device.

[0103] FIG. 3A to FIG. 3C Various cross-sectional views of the interior of an exemplary variable focal length lens assembly according to at least one exemplary embodiment of the present disclosure are shown. Specifically, Figure 3A A cutaway cross section of the lens barrel assembly 104 is shown, along with the front of the module base 102. As shown, the interior of the lens barrel assembly 104 houses an optical lens 118. Figure 3B Another cross-sectional view of variable focal length lens assembly 100 is shown, and the arrangement of the elements in lens barrel assembly 104 and module base 102 interior is shown.As shown in the figure, hole 122 can be positioned in the front of module base 102 to control the exposure amount to image sensor.Lens barrel assembly 104 can include a pair of magnets 120, and each magnet is positioned on the top side and bottom side of cross section.Each in magnet 120 can be positioned in this way, i.e., in all focusing positions, magnet 120 can interactively approach the positioning coil assembly 116A and 116B of positioning coil plate 114. Figure 3C Another cross-sectional view of the variable focus lens assembly 100 is shown, illustrating the arrangement of elements in the rear portion of the variable focus lens assembly 100. As shown, the rear stop 112 is located adjacent to the positioning coil plate 114 at the end of the interior space defined in the module base 102.

[0104] Figure 4A and Figure 4B Details of an exemplary lens barrel assembly, specifically lens barrel assembly 104 , are shown. Figure 4A A side view 104A of lens barrel assembly 104 is depicted from a front perspective. Figure 4B A side view 104B of lens barrel assembly 104 is depicted from a rear perspective.

[0105] As shown, the lens barrel assembly 104 includes an open frame lens barrel 124. The open frame lens barrel 124 can be a single component, or multiple connected and / or otherwise combined components to form a housing for the various other components described. For example, the open frame lens barrel 124 includes a top magnet opening that is designed to receive a first locating magnet 420A that will be located on the top of the lens barrel assembly 104, and the open frame lens barrel 124 includes a bottom magnet opening that is designed to receive a second locating magnet 420B that will be located on the bottom of the lens barrel assembly 104. In some embodiments, the open frame lens barrel 124 is designed so that the first locating magnet 420A and / or the second locating magnet 420B snap, fit, and / or otherwise attach and / or position in place without the use of additional structures, components, etc. In still other embodiments, the first locating magnet 420A and / or the second locating magnet 420B are attached to the open frame lens barrel 124 using one or more adhesives and / or other non-structural elements. Alternatively or additionally, in some embodiments, the locating magnets 420A and / or 420B are molded into the open frame lens barrel 124 to lock into place, or are otherwise locked into the open frame lens barrel 124 via one or more thermoplastic features. For example, in some embodiments, at least a portion of the open frame lens barrel 124 is melted over one or more of the locating magnets 420A and / or 420B to secure the locating magnets 420A and / or 420B in place.

[0106] like Figure 4A and Figure 4BAs shown, one or more of the positioning magnets 420A and 420B may be located in the optical path defined by the hole of the open frame lens barrel 124. In this regard, the overall size of the lens barrel assembly 104 can be minimized by ensuring that the positioning magnets do not need to be placed above the open frame lens barrel 124. For example, in some embodiments, the positioning magnets may each have a specific height equal to and / or less than the thickness of the open frame lens barrel 124, so that the positioning magnets do not increase the total height of the lens barrel assembly. In one or more embodiments, the open frame lens barrel 124 is designed and / or modified to include one or more defined spaces for supporting the positioning magnets. For example, as shown, the first positioning magnet 420A is positioned at the top of the open frame lens barrel 124, and the second positioning magnet 420B is positioned at the bottom of the open frame lens barrel 124. In this regard, positioning magnets 420A and 420B may be positioned relative to one another within lens barrel assembly 104 to evenly affect the position of lens barrel assembly 104 without increasing the overall size of lens barrel assembly 104 .

[0107] Additionally or alternatively, one or more of the positioning magnets 420A and / or 420B may be specifically designed to minimize the effects of the positioning magnets in the optical path. As shown, the first positioning magnet 420A and the second positioning magnet 420B are each positioned within the optical path to minimize the form factor of the assembly, which may result in reducing unwanted light reflections from one or more of the positioning magnets 420A and / or 420B for improved functionality. For example, in some embodiments, one or more of the first positioning magnet 420A and / or the second positioning magnet 420B includes a matte dark surface. The matte dark surface may minimize the effects of light reflections from the first positioning magnet 420A and / or the second positioning magnet 420B that affect one or more associated image sensors. It should be understood that the matte dark surface of one or more of the positioning magnets may be obtained in any of a variety of ways. For example, in some embodiments, one or more of the first locating magnet 420A and / or the second locating magnet 420B includes a magnet surface epoxy. The magnet surface epoxy can be applied to the locating magnets to cause such locating magnets to have a matte dark surface without significantly increasing the size of the locating magnets and / or affecting the functionality of such locating magnets. In at least one exemplary embodiment in which one or more of the locating magnets includes a glossy and / or reflective material (e.g., zinc and / or nickel plating), the magnet surface epoxy can cover the glossy and / or reflective surface without affecting the form factor and / or functionality of the locating magnet. In some embodiments, one or more of the locating magnets can be constructed of a matte dark material so that the locating magnets include a matte dark surface during manufacture and / or otherwise without the need for additional steps.

[0108] The open frame lens design includes a plurality of slots configured to enable engagement with one or more other components of, for example, a variable focus lens assembly. For example, in some embodiments, the open frame lens barrel 404 includes one or more bearing slots designed to receive one or more bearing balls. Figure 4A and Figure 4B As shown, the lens barrel 124 includes a pair of front bearing slots 126A and 126B and a pair of rear bearing slots 128A and 128B. Each of the bearing slots can be a faceted recess in the open frame lens barrel 124, so that the recess has a semicircular shape when viewed from a plane orthogonal to the direction of the recess. In other words, the entire recess is a hollow semi-cylindrical or semi-tubular shape.

[0109] In addition, as shown in the figure, the front bearing slots 126A and 126B and the rear bearing slots 128A and 128B are mutually crossed in position. Such configuration provides sufficient movable support for lens barrel assembly 104, while reducing the friction encountered during the movement of lens barrel assembly 104. Therefore, compared with full ball bearings, the amount of force required for moving lens barrel assembly 104 and the current required are less. For miniature size applications, the reduction of such friction and the reduction of current provide performance improvements of underlying equipment / devices.

[0110] Additionally or alternatively, in some embodiments, the open frame lens barrel 124 includes one or more openings to enable access to one or more limit screws. For example, in this regard, the open frame lens barrel 124 may include one or more additional openings located in the opposite corners of one or more bearing slots, such as bearing slot 408B. The additional openings may be sufficiently sized to allow one or more instruments to pass through the openings to engage the one or more limit screws for adjustment. Exemplary instruments include screwdrivers, hex wrenches, etc. for engaging one or more limit screws and / or other positioning limit components. In some embodiments, the additional openings enable access to the rear limit screws and / or other rear positioning limit components from the front of the lens barrel assembly.

[0111] In addition, as shown, the open frame lens barrel 124 defines a front hole and a rear hole so that light can pass through the open frame lens barrel 124. The hole can define an internal barrel space, which is defined to accommodate one or more optical elements. For example, as shown, the open frame lens barrel 124 defines a circular hole associated with the imaging lens 118 of the open frame lens barrel 124. In some embodiments, for example, as shown, one or more of the positioning magnets (such as the first positioning magnet 420A and / or the second positioning magnet 420B) are located in the optical path defined by the rear hole of the open frame lens barrel 124.

[0112] The imaging lens 118 includes one or more optical components for focusing, refracting, and / or otherwise manipulating light entering the open frame lens barrel. In some embodiments, the imaging lens 118 includes a plurality of sub-lenses designed to manipulate light traversing through the aperture in a desired manner. For example, the imaging lens 118 may be designed to angle light for capture at one or more desired points, such as at the location of an associated image sensor. The imaging lens 118 may be constructed of any number of materials, such as glass, optical plastics, etc., or combinations thereof. Additionally or alternatively, the imaging lens 118 may be constructed of one or more lenses embodying any number of lens designs.

[0113] FIG. 5A to FIG. 5C A perspective view of a module base of an exemplary variable focal length lens assembly according to at least one exemplary embodiment of the present disclosure is shown. Specifically, Figure 5A A first angled perspective view 102A of the module base 102 is shown from the front side of the module base 102 . Figure 5B A second angled perspective view 102B of the module base 102 is shown from the rear side of the module base 102 . Figure 5C An orthogonal perspective view 102B of the module base 102 is shown from the rear side of the module base 102 .

[0114] like Figure 5A As shown, the module base 102 includes a front elongated portion A defined by two arcuate portions on the side facing the scene to be imaged that constitutes the housing of the module base 102. The front elongated portion A defines a recess for inserting the lens barrel assembly 104 into the module base 102 to assemble the variable focal length lens assembly 100. The module base further includes a mounting base portion B that extends beyond the side of the module base 102, as shown in FIG. FIG. 5A to FIG. 5C The mounting base portion includes a recess B1 for receiving a fastening mechanism, such as a screw, a pin, a bolt, etc., to securely mount the variable focal length lens assembly 100 to a device such as an imaging device. Figure 5CAs shown, the module base includes two pairs of bearing slots, one pair each on the front and rear sides of the module base 102. The first pair of front bearing slots 126A' and 126B' are located on the front side of the module base 102 and are configured to align with the front bearing slots 126A and 126B of the lens barrel assembly 104, respectively. The second pair of rear bearing slots 128A' and 128B' are located on the rear side of the module base 102 and are configured to align with the rear bearing slots 128A and 128B of the lens barrel assembly 104, respectively. Therefore, the bearing ball can be inserted into each of the semicircular / semi-cylindrical slots of the lens barrel assembly 104, and then the lens barrel assembly 104 equipped with the bearing ball can be inserted into the module base 102 during the assembly of the variable focal length lens assembly 100. In such a configuration, the lens barrel assembly 104 is movably fixed to the module base 102 by means of the bearing balls 108A and 108B, and thus the lens barrel assembly 104 can be moved within the internal module space of the module base 102. As described, the alignment enables the lens barrel assembly 104 to be fully supported by the bearing balls for alignment and / or positioning by engaging with the bearing slots of the lens barrel assembly 104 and the module base 102. In addition, the alignment design of the bearing slots enables the lens barrel assembly 104 to traverse together with the bearing balls.

[0115] Figure 6 Various design details of an exemplary positioning coil plate according to at least one exemplary embodiment of the present disclosure are shown. Specifically, Figure 6 A first perspective view of the positioning coil plate 114 is depicted. It should be appreciated that similar details may be present in one or more other implementations of the positioning coil plate (eg, the positioning coil plate 114 as described herein).

[0116] The positioning coil plate 114 includes a coil connection plate 602. The coil connection plate 602 embodies hardware, circuits, etc. for connecting one or more subassemblies of the positioning coil plate 114. In this regard, the coil connection plate 602 can be embodied by a conductive material that is configured to receive current to power one or more subassemblies (such as one or more positioning coil assemblies and / or parts thereof) of the positioning coil plate 114. For example, the coil connection plate 602 receives current to power the first positioning coil 604A and / or the second positioning coil 604B. In some exemplary embodiments, the positioning coil plate 114 can be fixedly attached to the module base.

[0117] Coil connecting plate 602 also comprises first limiting component opening 608.First limiting component opening 608 can be positioned relatively with second limiting component opening (not depicted).In this regard, first limiting component opening and / or second limiting component opening can be designed to engage with one or more limiting components, for example with the associated limiting component opening of one or more other parts (such as module base).For example, as described, first limiting component opening 608 can engage one of the rear limiting screws for setting the rear position limit of associated lens barrel assembly.Similarly, second limiting component opening can engage another of the rear limiting screws.In this regard, limiting components can extend through the limiting component opening of both positioning coil plate 114 and associated module base.

[0118] The positioning coil plate 114 further includes a first positioning coil 604A and a second positioning coil 604B (collectively referred to as "positioning coils 604"). Each of the positioning coils 604 may include a certain length of wound conductive wire. In this regard, each of the positioning coils 604 may be powered to an energized state based on the current of the positioning coil passing through the positioning coil 604. It should be understood that each of the positioning coils 604 may include the same material, such as copper wire, electroplated copper wire, tinned wire, etc. It should be understood that in some embodiments, each of the positioning coils 604 is designed to generate a magnetic field of the same strength as another of the positioning coils 604 when the coils are set to the same energized state.

[0119] As shown in the figure, each of the locating coils 604 defines a coil interior area, and the coil interior area includes the open space between the coils. In this regard, the locating coil plate 157 may include a locating pad in the coil interior area of ​​each of the locating coils 604. Specifically, as shown in the figure, the first locating pad 606A is located in the first coil interior area of ​​the first locating coil 604A. In addition, the second locating pad 606B is located in the coil interior area of ​​the second locating coil 604B. In this regard, each of the first locating pad 606A and the second locating pad 606B (collectively referred to as "locating pad 606") may include a specific volume size, which is specific to being fitted in the internal area defined by the corresponding locating coil.

[0120] In some embodiments, each of the positioning pads 606 includes a component of a magnetic material. For example, in some embodiments, each of the positioning pads 606 includes a large amount of iron or a large portion of iron designed to fit in the coil internal area of ​​the corresponding positioning coil. In this regard, each of the positioning pads 606 can be configured to interact with one or more magnets of the variable focal length lens assembly when assembled, such as when the variable focal length lens assembly is assembled for operation and when each of the positioning coils 604 is in a non-energized state, the positioning magnets of the lens barrel assembly are aligned with each of the positioning pads 606. For example, the first positioning pad 606A can interact with the first positioning magnet of the lens barrel assembly. Similarly, the second positioning pad 606B can interact with the second positioning magnet of the lens barrel assembly.

[0121] In some embodiments, each of the locating pads 606 is fixed in the coil internal area using any of a variety of methods. For example, in some embodiments, one or more of the locating pads 606 are fixed using one or more adhesives. In addition or alternatively, in some embodiments, each internal coil area is limited by a coil frame. In some such embodiments, each coil frame can be molded around the corresponding locating pad in the locating pad 606 completely and / or partially to fix the corresponding locating pad. In some such embodiments, the winding wire is wound around the coil frame.

[0122] As shown, the first locating coil 604A is positioned relative to the second locating coil 604B. In this regard, similarly, the first locating pad 606A is positioned relative to the second locating pad 606B. Therefore, the first locating pad 606A can interact with the first locating magnet of the lens barrel assembly, and the second locating pad 606B can interact with the second locating magnet of the lens barrel assembly to maintain and / or cause the adjustment of the position of the lens barrel assembly in the module base. For example, in at least one exemplary context, the first locating pad 606A, the first locating magnet of the lens barrel assembly, the second locating pad 606B and the second locating magnet of the lens barrel assembly are all aligned in the default state based on the default magnetic force between the corresponding locating pads in the locating magnet and the locating pad 606A, such as when each of the locating coil 604 is in a non-powered state.

[0123] The first positioning coil 604A can be powered to a first power-on state to generate a first magnetic field, and the second positioning coil 604B can be powered to generate a second magnetic field that is symmetrical to the first magnetic field. Therefore, the first magnetic field and the second magnetic field can cancel each other out relative to one or more directions that are opposite to each other. In this regard, the interaction of the first magnetic field and the second magnetic field can cause the resulting magnetic field to provide a force in only one direction, such as a lateral direction representing the lens barrel assembly. The resulting magnetic force can further interact with the default magnetic force between the positioning magnets of the lens barrel assembly and the positioning pad 606A to move the lens barrel assembly to a new focal length position based on the resulting magnetic force, as described herein.

[0124] Having described exemplary assemblies and component details of various components of the assemblies, additional descriptions are provided with respect to the operation of a variable focal length lens assembly for image capture. Additionally or alternatively, additional descriptions are provided regarding the focal length positions of the variable focal length lens assembly for image capture purposes. It should be understood that, based on the above disclosure, one or more of the described lens assemblies may be used for image capture in any of the described contexts.

[0125] Fig. 7A and Figure 7B The passage of light through a variable focal length lens assembly for capture by an associated image sensor is illustrated in accordance with at least one exemplary embodiment of the present disclosure. Specifically, Fig. 7A A side cross-sectional view of a variable focal length lens assembly and corresponding image sensor is depicted via light trace visualization. Figure 7B A front perspective view of a variable focus lens assembly and corresponding image sensor is depicted through light trace visualization. In some embodiments, for example, the depicted components can be integrated into an imaging device as described herein.

[0126] Fig. 7A and Figure 7B An image sensor 702 is included. In some embodiments, the image sensor 702 is configured to capture an image data object representing incident light interacting with the image sensor 702. Specifically, as shown, the light may pass through one or more optical components, such as the variable focus lens assembly 100. In this regard, the image sensor 702 may convert the light waves interacting with the image sensor 702 into data represented in a corresponding captured image data object.

[0127] As shown, the variable focal length lens assembly 100 is located in front of the image sensor 702. In this regard, light reaching the image sensor 702 may pass through one or more apertures defined by the variable focal length lens assembly 100 and / or optical elements positioned therein. For example, as shown, incident light may enter the front portion of the variable focal length lens assembly 100 and interact with one or more imaging lenses of the variable focal length lens assembly 100 before exiting the variable focal length lens assembly 100 and interacting with the image sensor 702. In this regard, the variable focal length lens assembly 100 and / or its various subcomponents may manipulate the incident light to redirect the light toward the image sensor 702 and / or one or more target portions of the image sensor 702.

[0128] Light trace 704 represents an exemplary visualization of the manipulation of light passing through the variable focal length lens assembly. As shown, light trace 704 depicts incident light reflected, refracted and / or otherwise manipulated by the variable focal length lens assembly for image sensor 702 to capture. Specifically, as shown, the incident light can interact with one or more imaging lenses of the lens barrel assembly of the variable focal length lens assembly 100 and / or one or more parts of the lens barrel assembly (such as an open frame lens barrel that accommodates such image lenses). In this regard, as shown in light trace 704, at least some of the incident light can be reflected toward image sensor 702 when interacting with the open frame lens barrel. Similarly, at least some of the incident light can be angled toward one or more specific portions of the image sensor 702 to enable capture of image data objects representing the incident light.

[0129] The light trace 704 may be changed based on one or more changes in aspects of the variable focal length lens assembly 100. For example, in some embodiments, the focal length position of the lens barrel assembly within the variable focal length lens assembly 100 changes the manipulation of light by the variable focal length lens assembly 100 such that incident light at a particular point may interact with the image sensor 702 at a different point based on the focal length position of the lens barrel assembly. Thus, by repositioning the lens barrel assembly within the variable focal length lens assembly 100, an image data object captured by the image sensor 702 may be changed to reflect the adjusted focal length position. In some such embodiments, repositioning the lens barrel assembly within the variable focal length lens assembly 100 causes objects within a particular focus range corresponding to the focal length position to be more clearly reflected within the captured image data object, e.g., as described herein with respect to an image data object including a representation of one or more visually encoded indicia.

[0130] Fig. 8A , Figure 8B and Figure 8CAn exemplary visualization of a lens barrel assembly positioned at different focal length positions within a module base of a variable focal length lens assembly is shown. Specifically, Fig. 8A The lens barrel assembly is depicted at a first focal length position, which is specified for neutral field focusing. Figure 8B The lens barrel assembly is depicted at a second focal length position, which is designated for far-field focusing. Figure 8C The lens barrel assembly is depicted at a third focal length position, which is designated for near-field focusing.

[0131] Fig. 8A A lens barrel assembly 104 is depicted within a module base 102 at a first focal position for neutral field focusing. In some such embodiments, the focal position is defined based on an offset of the lens barrel assembly 104 relative to a default position. The default position may be defined by the position of the lens barrel assembly 104 when one or more coil positioning assemblies of the variable focal length lens assembly 100 are in a non-powered state or in a default powered state in other embodiments. For example, in some embodiments, the lens barrel assembly 104 is located at an intermediate focal position in a non-powered state, the intermediate focal position being defined as a default focal position when in a non-powered state (e.g., via zero current to the positioning coil assembly). In some such embodiments in which the coil positioning assembly is in a non-powered state, the lens barrel assembly 104 may be positioned within the variable focal length lens assembly 100 based on a default magnetic force between one or more positioning magnets of the lens barrel assembly 104 and one or more positioning pads of the variable focal length lens assembly 100.

[0132] For purposes of illustration, a focal length position associated with lens barrel assembly 104 may be defined for one or more offsets relative to one or more specific axes associated with locating pads of variable focal length lens assembly 100 and / or locating magnets of lens barrel assembly 104, and corresponding offsets for the front and rear of module base 102 within which lens barrel assembly 104 is aligned. For example, Fig. 8A , Figure 8B and Figure 8C Each includes: a pad front axis 802A, which depicts the front axis of the pair of positioning pads of the variable focus lens assembly 100; a pad center axis 802B, which depicts the center axis of the pair of positioning pads of the variable focus lens assembly 100; and a pad rear axis 802C, which represents the rear axis of the pair of positioning pads of the variable focus lens assembly 100.

[0133] like Fig. 8AAs shown, in at least one exemplary embodiment, at the neutral focal length position, the lens barrel assembly 104 in the internal module space is positioned so that the positioning magnets of the lens barrel assembly 104 are aligned with various axes associated with the pair of positioning pads. In this regard, the front of the positioning magnets 420A and 420B are aligned with the pad front axis 802A, the rear of the positioning magnets 420A and 420B are aligned with the pad rear axis 802C, and the center of the positioning magnets 420A and 420B is aligned with the pad center axis 802B. In other embodiments, at the neutral focal length position, the center of the positioning magnets 420A and 420B may be aligned with the pad center axis 802B, but the front of the positioning magnets 420A and 420B may not be aligned with the pad front axis 802A and / or the rear of the positioning magnets 420A and 420B may not be aligned with the pad rear axis 802C. For example, in some such embodiments, the positioning magnets 420A and 420B may each be larger or smaller in width than the positioning pad such that when the centers of the positioning magnets 420A and 420B are aligned with the center of the positioning pad, the front and / or rear of the positioning magnets 420A and 420B are not aligned with the positioning pad.

[0134] like Fig. 8A As shown, when the lens barrel assembly 104 is positioned at the neutral focal length position, the front of the lens barrel assembly 104 is spaced apart from the inner wall of the front of the module base 102 by a first offset. Specifically, as shown, the inner wall of the front of the module base 102 is spaced apart from the front of the variable focal length lens assembly 100 by a neutral focal length front position offset. The neutral focal length front position offset can be designed to be a predetermined distance between the front of the lens barrel assembly 104 and the inner wall of the front of the module base 102 when the lens barrel assembly 104 is in the neutral focal length position. In some embodiments, the neutral focal length front position offset represents the maximum distance that the lens barrel assembly 104 can be moved forward from the neutral focal length position to, for example, focus the variable focal length lens assembly 100 to improve near-field focus.

[0135] In addition, when the lens barrel assembly 104 is positioned at the neutral focal length position, the rear of the lens barrel assembly 104 is spaced apart from the inner wall of the rear of the module base 102 by a second offset. Specifically, as shown, the inner wall of the rear of the module base 102 is spaced apart from the rear of the lens barrel assembly 104 by a neutral focal length rear position offset. The neutral focal length rear position offset can be designed to be a predetermined distance between the rear of the lens barrel assembly 104 and the inner wall of the rear of the module base 102 when the lens barrel assembly 104 is in the neutral focal length position. In some embodiments, the neutral focal length rear position offset represents the maximum distance that the lens barrel assembly 104 can be moved backward from the neutral focal length position to, for example, focus the variable focal length lens assembly 100 to improve far field focus.

[0136] like Figure 8BAs shown, in at least one exemplary embodiment, at the far focal length position, the lens barrel assembly 104 is positioned such that the positioning magnets 420A and 420B of the lens barrel assembly 104 are offset by the far position magnetic offset relative to various axes associated with the pair of positioning pads. In this regard, the front of the positioning magnet is displaced rearwardly from the pad front axis 802A by the far position magnetic offset, the rear of the positioning magnet is displaced rearwardly from the pad rear axis 802C by the near position magnetic offset, and the center of the positioning magnet is displaced rearwardly from the pad center axis 802B by the near position magnetic offset. In other embodiments, for example, where the positioning magnets are larger and / or smaller than the positioning pads, only the centers of the positioning magnets 420A and 420B are displaced by the far position magnetic offset from the pad center axis 802B.

[0137] The far focus position may be defined by the position of the lens barrel assembly 104 when the one or more coil positioning assemblies of the variable focus lens assembly 100 are in a first energized state (e.g., the far focus energized state). In some such embodiments where the coil positioning assemblies are in the far focus energized state, the lens barrel assembly 104 may be positioned within the variable focus lens assembly 100 based on the magnetic forces generated by the coil positioning assemblies in the far focus energized state and the default magnetic forces between the one or more positioning magnets of the lens barrel assembly 104 and the one or more positioning pads of the variable focus lens assembly 100. For example, in this regard, the interaction between the magnetic forces may result in a resulting magnetic force that defines the far focus position.

[0138] As shown, when the lens barrel assembly 104 is positioned at the telephoto position, the rear portion of the lens barrel assembly 104 is positioned as far back as possible in the module base 102. In this regard, there is no rear position offset between the inner wall of the rear portion of the module base 102 and the rear portion of the lens barrel assembly 104. In some such embodiments, the inner wall of the rear portion of the module base 102 may contact the rear portion of the lens barrel assembly 104 to prevent the lens barrel assembly 104 from moving further backward. In other embodiments, at the telephoto position, the lens barrel assembly 104 may contact one or more rear limiting components (such as rear limiting screws). It should be understood that, as shown, the telephoto position may be positioned backward from the neutral focal length position by a distance represented by the neutral focal length rear position offset.

[0139] In addition, when the lens barrel assembly 104 is positioned at the far focal length position, the front of the lens barrel assembly 104 is spaced apart from the inner wall of the front of the module base 102 by a second offset. Specifically, as shown in the figure, the inner wall of the front of the module base 102 is spaced apart from the front of the lens barrel assembly 104 by a far focal length front position offset. The far focal length front position offset can represent a distance equal to the neutral focal length rear position offset added to the neutral focal length front position offset. In other words, in some such embodiments, the far focal length front position offset represents the maximum distance that the front of the lens barrel assembly 104 can be positioned relative to the inner wall of the front of the module base 102. It should be understood that in order to move the lens barrel assembly 104 to the far focal length position, the magnetic offset can match the neutral focal length rear position offset, as described above. It should be understood that moving the lens barrel assembly 104 can improve the far field focusing of the variable focal length lens assembly 100.

[0140] like Figure 8C As shown, in at least one exemplary embodiment, at the near focus position, the lens barrel assembly 104 is positioned so that the locating magnets of the lens barrel assembly 104 are offset by the near position magnetic offset relative to various axes associated with the pair of locating pads. In this regard, the front of the locating magnet is displaced forward from the pad front axis 802A by the near position magnetic offset, the rear of the locating magnet is displaced forward from the pad rear axis 802C by the near position magnetic offset, and the center of the locating magnet is displaced forward from the pad center axis 802B by the near position magnetic offset. In other embodiments, for example, where the locating magnet is larger and / or smaller than the locating pad, only the center of the locating magnet is displaced by the near position magnetic offset from the pad center axis 802B.

[0141] The near focus position may be defined by the position of the lens barrel assembly 104 when the one or more coil positioning assemblies of the variable focus lens assembly 100 are in a second energized state (e.g., the near focus energized state). In some such embodiments where the coil positioning assemblies are in the near focus energized state, the lens barrel assembly 104 may be positioned within the variable focus lens assembly 100 based on the magnetic forces generated by the coil positioning assemblies in the near focus energized state and the default magnetic forces between the one or more positioning magnets of the lens barrel assembly 104 and the one or more positioning pads of the variable focus lens assembly 100. For example, in this regard, the interaction between the magnetic forces may result in a resulting magnetic force that defines the near focus position.

[0142] As shown, when the lens barrel assembly 104 is positioned at the near focus position, the front of the lens barrel assembly 104 is positioned as far forward as possible in the module base 102. In this regard, there is no front position offset between the inner wall of the front of the module base 102 and the front of the lens barrel assembly 104. In some such embodiments, the module base 102 may contact the lens barrel assembly 104 to prevent the lens barrel assembly 104 from moving forward. In other embodiments, at the near focus position, the lens barrel assembly 104 may contact one or more front limiting components (such as the front limiting screws described relative to the variable focal length lens assembly 150). It should be understood that, as shown, the near focus position can be positioned forward from the neutral focus position by a distance represented by the neutral focus front position offset.

[0143] In addition, when the lens barrel assembly 104 is positioned at the near focus position, the rear of the lens assembly 104 is spaced apart from the inner wall of the rear of the module base 102 by a second offset. Specifically, as shown in the figure, the inner wall of the rear of the module base 102 is spaced apart from the rear of the lens barrel assembly 104 by a near focus position offset. The near focus position offset can represent a distance equal to the neutral focus position offset added to the neutral focus front position offset. In other words, in some such embodiments, the near focus position offset represents the maximum distance that the rear of the lens barrel assembly 104 can be positioned relative to the inner wall of the module base 102. It should be understood that in order to move the lens barrel assembly 104 to the near focus position, the magnetic offset can match the neutral focus front position offset, as described above. It should be understood that moving the lens barrel assembly 104 can improve the near field focusing of the variable focal length lens assembly 100.

[0144] It should be understood that the above-mentioned focal length positions are exemplary only for the purpose of description and explanation. In other embodiments, the lens barrel assembly can be continuously positioned in the module base. In this regard, for example, the positioning coil assembly of the variable focal length lens assembly 100 can be powered to any number of power-on states. Each of the power-on states can correspond to the resulting magnetic force that defines different focal length positions. In some such embodiments, when the lens barrel assembly 104 is positioned more forward in the module base 102 along the continuous focal length position spectrum, the near-field focusing of the variable focal length lens assembly 100 is improved. Similarly, in some such embodiments, when the lens barrel assembly 104 is positioned more backward in the module base 102 along the continuous focal length position spectrum, the far-field focusing of the variable focal length lens assembly 100 is improved.

[0145] Fig. 9A , Fig. 9B and Fig. 9CEach shows a visualization of an image data object including representations of various visually coded indicia captured by an image sensor using a variable focal length lens assembly having a lens barrel assembly at different focal length positions. Specifically, Fig. 9A , Fig. 9B and Fig. 9C , each of which depicts a near field marker at a first distance from the variable focus lens assembly, a neutral field marker at a second distance from the variable focus lens assembly, and a far field marker at a third distance from the variable focus lens assembly. In one exemplary context, for example, as shown, the near field marker may be positioned at 1 meter from the variable focus lens assembly, the neutral field marker may be positioned at 1.8 meters from the variable focus lens assembly, and the far field marker may be positioned at 6 meters from the variable focus lens assembly. It should be understood that in other embodiments, the near field marker, the neutral field marker, and / or the far field marker may be positioned at alternative distances to those described above, for example, where the far field marker is positioned farther than the neutral field marker, which is positioned farther than the near field marker.

[0146] Fig. 9A Depicts an image data object representing various visually encoded indicia captured using a lens barrel assembly at a default focal length position, such as relative to Fig. 8A In this regard, the lens barrel assembly may be positioned to enable capture of visually encoded indicia at an intermediate or determined intermediate range, better in-focus distance (e.g., 1.8 meters and / or about that distance from the lens barrel assembly).

[0147] Fig. 9AThe first representation of the far field mark 902A, the first representation of the neutral field mark 904A and the first representation of the near field mark 906A are included. As shown, the first representation of the far field mark 902A is not in focus, so that the captured representation is blurred due to not being close to the distance of the focus range associated with the neutral focus position of the lens barrel assembly. Similarly, the first representation of the near field mark 906A is also not in focus, so that the captured representation is blurred due to not being close to the distance of the focus range associated with the neutral focus position of the lens barrel assembly. However, in this regard, the near field mark 906A is closer to the focus range associated with the near focus position of the lens barrel assembly, and is therefore better focused than the representation of the far field mark 902A. The first representation of the neutral field mark 904A is the best focus, because the focus range of the neutral focus position matches and / or is closest to the distance at which the neutral field mark is positioned. Therefore, the object at this distance is most clearly represented in the captured image data object. Thus, when the lens barrel assembly is positioned at a neutral focal length position, visually encoded indicia at a focus range associated with the neutral focal length position of the lens barrel assembly (eg, 1.8 meters) may most likely be successfully detected and / or successfully decoded from an image data object.

[0148] Fig. 9B An image data object is depicted that represents various visually coded indicia captured using a lens barrel assembly at a close focus position. In this regard, the lens barrel assembly can be positioned to enable the visually coded indicia to be captured at a close distance (e.g., 1 meter and / or about that distance from the lens barrel assembly) for better focus. Fig. 9B A second representation including a far field mark 902B, a second representation of a neutral field mark 904B, and a third representation of a near field mark 906B. As shown, the second representation of the far field mark 902B is the least focused, so that the captured representation is blurred due to the focus range farthest from the near focus position corresponding to the lens barrel assembly. In addition, in this regard, the second representation of the neutral field mark 904B is more focused than the far field mark 902B, however, the neutral field mark 904B remains partially blurred due to the focus range of the neutral focus position not being equal to the distance at which the neutral field mark is positioned. Therefore, the second representation of the near field mark 906B is the most focused, such as to make the data represented in the image data object most clearly represent the visual coding mark. In this regard, the focus range of the near focus position can match or most closely match the distance of the near field mark, so that the object at this distance is most clearly represented in the captured image data object. Thus, visually encoded indicia at a close focus range associated with a close focus position of the lens barrel assembly (eg, 1 meter) may be most likely to be successfully detected and / or successfully decoded from an image data object.

[0149] Fig. 9CAn image data object is depicted that represents various visually coded indicia captured using a lens barrel assembly at a far focal length position. In this regard, the lens barrel assembly may be positioned to enable the visually coded indicia to be captured at a far distance (e.g., 6 meters and / or about or exceeding that distance from the lens barrel assembly) that is better in focus. Fig. 9C The third representation of the far field mark 902C, the third representation of the neutral field mark 904C and the third representation of the near field mark 906C are included. As shown, the third representation of the near field mark 906C is the least focused, so that the captured representation is blurred due to the focus range farthest from the far focus position corresponding to the lens barrel assembly. In addition, in this regard, the third representation of the neutral field mark 904B is more focused than the third representation of the near field mark 906C, however, the third representation of the neutral field mark 904C remains partially blurred due to the focus range of the far focus position not being equal to the distance at which the neutral field mark is positioned. Therefore, the third representation of the far field mark 902C is the most focused, such as to make the data represented in the image data object most clearly represent the visual coding mark. In this regard, the focus range of the far focus position can match or most closely match the distance of the far field mark, so that the object at this distance is most clearly represented in the captured image data object. Thus, visually encoded indicia at a far focus range associated with a far focus position of the lens barrel assembly (eg, 6 meters) may be most likely to be successfully detected and / or successfully decoded from an image data object.

[0150] It should be understood that the representations shown are exemplary only. In other embodiments, such representations may be brought into better focus by positioning the lens barrel assembly at one or more other focal length positions. For example, in some other embodiments, a representation of the visually coded indicia at 3 meters may be brought into focus at additional focal length positions between the neutral focal length position and the far focal length position along a continuous focal length position spectrum.

[0151] Having described the physical configuration of the focal length position of the lens barrel assembly, details are now provided about the magnetic force that causes the repositioning of the lens barrel assembly and the functional details associated with the variable focal length lens assembly. It should be understood that the specific details and / or specific implementation values ​​described are only exemplary. In fact, in other embodiments, similar implementations similar to the described and depicted embodiments can be utilized. In this regard, the depicted and / or described specific implementations should not be construed as limiting the scope and / or spirit of the present disclosure.

[0152] Fig. 10A and Fig. 10B Magnetic forces applied by each of a pair of coil positioning assemblies associated with a pair of positioning magnets of a variable focal length lens assembly are shown according to at least some exemplary embodiments of the present disclosure. Specifically, Fig. 10A Depicted are magnetic forces exerted by each of a pair of coil positioning assemblies associated with a pair of positioning magnets of a variable focus lens assembly when the pair of coil positioning assemblies are in a non-energized state. Fig. 10B Depicted are magnetic forces exerted by each of a pair of coil positioning assemblies associated with a pair of positioning magnets of a variable focus lens assembly when the pair of coil positioning assemblies are in a first energized state.

[0153] like Fig. 10A As shown, the first positioning magnet combined with the first positioning coil assembly applies a first magnet-coil force 1002. For example, in this regard, the first positioning magnet and the first positioning coil assembly can be positioned toward the top of the variable focal length lens assembly. Similarly, the second positioning magnet combined with the second positioning coil assembly applies a second magnet-coil force 1004. For example, the second positioning magnet and the second positioning coil assembly can be positioned toward the top of the variable focal length lens assembly.

[0154] The first magnet-coil force 1002 may be symmetrical with respect to the second magnet-coil force 1004. The magnetic forces 1002 and 1004 may be generated relative to each other so that the first magnet-coil force 1002 and the second magnet-coil force 1004 are combined along the desired direction of movement (e.g., forward or backward) to improve the efficiency of moving the lens barrel assembly in the desired direction, and cancel in one or more orthogonal directions (e.g., toward one or more positioning pads) where such movement is not required. In this regard, in some such embodiments, the lens barrel assembly may remain at a default focal length position despite the presence of the first magnet-coil force 1002 and the second magnet-coil force 1004. In some such embodiments, the first magnet-coil force 1002 and the second magnet-coil force 1004 may move the lens barrel assembly to the default focal length position, and / or move the lens barrel assembly to another focal length position along the movement axis based on the current direction and current intensity of the current flowing through each of a pair of positioning coil assemblies. In this way, the combination of first magnet-coil force 1002 and second magnet-coil force 1004 can define a default focal position of the lens barrel assembly within the module base.

[0155] Fig. 10BThe third magnet-coil force 1052 and the fourth magnet-coil force 1054 are shown. The third magnet-coil force 1052 can be applied by the top positioning magnet and the top positioning coil assembly powered to the first power-on state. Similarly, the fourth magnet-coil force 1054 can be applied by the bottom positioning magnet and the bottom positioning coil assembly powered to the first power-on state. As shown, the third magnet-coil force 1052 includes at least some magnetic forces symmetrical but opposite to at least some magnetic forces applied by the fourth magnet-coil force 1054. Such opposite magnetic forces can offset so that there is no net magnetic force in such directions, such as orthogonal to the moving direction realized by the engagement of the lens barrel assembly with one or more bearing balls. In addition, the third magnet-coil force 1052 and the fourth magnet-coil force 1054 each apply magnetic forces in the same direction (e.g., toward the front of the module base) parallel to the moving direction realized by the engagement of the lens barrel assembly with one or more bearing balls. These magnetic forces can be applied to the lens barrel assembly to reposition the lens barrel assembly to a new focal length position. It should be understood that where the positioning coil assembly is powered to a different power-on state (e.g., powered to a negative state compared to the first power-on state), the generated magnetic forces can be in an opposite direction parallel to the optical axis, such as causing the magnetic forces to be applied to the lens barrel assembly to cause movement in another direction (e.g., toward the rear of the module base).

[0156] Fig.11 Shown is an exemplary distribution of force relative to displacement. Specifically, as shown in the figure, distribution includes a graph 1150 of the displacement of the lens barrel assembly compared with the applied magnetic force. In this regard, the front portion of the module base can be associated with a positive displacement, and the rear portion of the module base can be associated with a negative displacement. Specifically, as shown in the figure, at a default and / or in other words neutral focal length position (e.g., 0.00um), the magnetic force is about 22mN. When the displacement increases in the positive direction (i.e., toward the front portion of the module base), the required force decreases and approaches zero. Similarly, when the displacement decreases in the negative direction (i.e., toward the rear portion of the module base), the required force further increases, thereby approaches 39mN.

[0157] The focal length position can be defined based on the current direction and intensity in one or more positioning coil assemblies (such as a pair of positioning coil assemblies). For example, in this regard, the lens barrel assembly can be positioned at a default position without the current (e.g., in a non-powered state) leading to the pair of positioning coil assemblies. In addition, in this regard, when the first maximum current intensity in the first direction is applied to the pair of positioning coil assemblies (e.g., the first powered state), the lens barrel assembly can be positioned at the maximum forward position. Similarly, in this regard, when the second maximum current intensity in the second direction is applied to the pair of positioning coil assemblies (e.g., the second powered state), the lens barrel assembly can be positioned at the maximum backward position.

[0158] By allocating various required forces to position the lens barrel assembly at the front focal length position, the rear focal length position or the neutral focal length position in the module base, the variable focal length lens assembly is designed to quickly position the lens barrel assembly to the extreme position by quickly changing the applied magnetic force. In this regard, for example, one or more positioning coil assemblies can be manipulated to apply zero or near-zero magnetic force (such as the lowest possible magnetic force) to position the lens barrel assembly at the front of the module base as close as possible and, for example, the near focal length position farthest from the image sensor. Similarly, one or more positioning coil assemblies can be manipulated to apply maximum magnetic force or near-maximum magnetic force to position the lens barrel assembly at the rear of the module base as close as possible and, for example, the far focal length position closest to the corresponding image sensor. In addition, one or more positioning coil assemblies can be manipulated to apply intermediate target magnetic force so that the lens barrel assembly is positioned at the neutral focal length position toward the middle of the module base. In this regard, the variable focal length lens assembly can be designed to quickly apply the necessary force to achieve the displacement of the lens barrel assembly so as to translate to at least these three discrete focal length positions. It should be appreciated that in other embodiments, the variable focal length lens assembly can be configured to apply the necessary force to effectuate displacement of the lens barrel assembly for translation to any number of other focal length positions.

[0159] Having described various possible implementations of variable focus lens assemblies and various details thereof, additional descriptions are provided regarding devices that integrate at least one variable focus lens assembly. It should be understood that in some embodiments, one or more of the devices may include a variable focus lens assembly, for example to replace far-field imaging optics. Alternatively or in addition, in some embodiments, one or more of the devices may include multiple variable focus lens assemblies, for example, at least a first variable focus lens assembly to replace far-field imaging optics and a second variable focus lens assembly to replace near-field imaging optics. Therefore, the specific embodiments described and / or depicted herein should not limit the scope and spirit of the present disclosure.

[0160] Fig.12and Fig.13 An exemplary variable focus multi-sensor imaging engine including a variable focus lens assembly is shown. Specifically, Fig.12 A front perspective view 1200 of a variable focus multi-sensor imaging engine is depicted. Fig.13 A rear perspective view 1300 of a variable focus multi-sensor imaging engine is depicted.

[0161] Fig.12 and Fig.13 The variable focal length multi-sensor imaging engine shown in includes various hardware configured to enable capture, transmission and / or processing of one or more image data objects. For example, the variable focal length multi-sensor imaging engine may be configured to capture a near-field image data object representing a near field of view, and to capture a far-field image data object representing a far field of view. Additionally or alternatively, the variable focal length multi-sensor imaging engine may be configured to generate one or more illuminations for capturing such image data objects. Specifically, as shown in the figure, the variable focal length multi-sensor imaging engine includes a near-field lens assembly (1202, 1302) associated with a near-field image sensor 1204. The near-field lens assembly and the near-field image sensor may form a near-field imager that is configured to receive light from a specific near field of view and capture the light in the near-field image data object representing the near field of view from the perspective of the near-field imager.

[0162] Similarly, the variable focus multi-sensor imaging engine includes a variable focus lens assembly 100 associated with a variable focus image sensor 1206. In this regard, the variable focus lens assembly 100 and the variable focus image sensor 1206 form a far field imager that is configured to receive light from a particular far field and capture said light in a far field image data object representing the far field from the perspective of the far field imager. In this regard, the variable focus lens assembly 100 can be manipulated, for example, via one or more activation signals, to position the lens barrel assembly at various focal length positions when desired, for example, to configure the variable focus lens assembly 100 for focusing to capture representations of objects at a particular determined and / or predetermined focus range.

[0163] The variable focal length multi-sensor imaging engine further includes an integrated illumination optics (1208, 1308). In this regard, the integrated illumination aid optics may be designed to generate one or more illumination patterns based on incident light received from one or more illuminator sources (not depicted) of the variable focal length multi-sensor imaging engine. For example, the integrated illumination aid optics may be associated with an illumination optic located below the integrated illumination aid optics. Additionally or alternatively, in some embodiments, the integrated illumination aid optics is configured to receive aid illumination and project a corresponding aid pattern based on one or more aid subassemblies of the integrated illumination aid optics.

[0164] The variable focal length multi-sensor imaging engine further includes an imaging board 1310. The imaging board (1210, 1310) includes hardware, circuitry, etc. configured to power and / or enable activation of one or more associated components connected to the imaging board. For example, in some embodiments, the imaging board is connected to at least the near-field image sensor (1204, 1304), the image sensor (1206), one or more illuminator sources of the variable focal length multi-sensor imaging engine, and / or one or more auxiliary sources of the variable focal length multi-sensor imaging engine. In this regard, the imaging board (1210, 1310) may enable activation of each of these components, for example to activate the near-field image sensor 1304 and / or 1306, thereby causing the capture of an image data object. In some such cases, the imaging board further transmits such captured image data objects from the image sensor 1306 and / or 1304 to one or more processors and / or other hardware connected to the variable focal length multi-sensor imaging engine. Additionally or alternatively, in some embodiments, the imaging board is connected to at least the variable focus lens assembly 100, for example to power one or more coil positioning subassemblies and / or otherwise activate them to a desired power-on state. In some embodiments, the imaging board is connected to one or more external processors and / or other circuits for performing such functions. In some embodiments, the imaging board is embodied by one or more printed circuit boards. For example, in at least one exemplary embodiment, the imaging board includes a flexible printed circuit board that is configured to connect various layers on which one or more other components of the variable focus multi-sensor imaging engine can be mounted and / or otherwise connected.

[0165] In this regard, the variable focus lens assembly 100 can provide variable focus to a variable focus multi-sensor imaging engine within a range of focus positions based on the design of the variable focus lens assembly 100. For example, in at least some embodiments, the variable focus lens assembly 100 is configured to be positioned at a near focus position, a neutral focus position, and a far focus position. In some such embodiments, the variable focus lens assembly 100 can include one or more activation signals for powering one or more coil positioning assemblies that are determined to be suitable for repositioning a lens barrel assembly within the variable focus lens assembly 100 to a desired focus position to capture one or more image data objects.

[0166] In some embodiments, the variable focus lens assembly 100 receives power from one or more components of the variable focus multi-sensor imaging engine. For example, in some embodiments, the variable focus lens assembly 100 is connected to a coil power circuit embodied in the variable focus multi-sensor imaging engine, such that the coil power circuit provides power to the variable focus lens assembly 100. In this regard, the coil power circuit can set the variable focus lens assembly 100 to a powered state by providing a specific power value (e.g., current and / or voltage) to the variable focus lens assembly 100 and / or its subcomponents (such as one or more positioning coil assemblies). In some embodiments, the coil power circuit is embodied by the imaging board (1210, 1310) or at least a portion thereof. In this regard, the variable focus lens assembly 100 can be integrated with and / or otherwise connected to the imaging board (1210, 1310), which can receive one or more instructions from an included and / or associated processor to provide a determined power value to the variable focus lens assembly 100.

[0167] In some embodiments, a variable focus multi-sensor imaging engine may be included in one or more imaging devices. For example, in this regard, Fig.14A , Fig. 14B and Fig. 14C An exemplary variable focal length multi-sensor imaging device 1400 is shown in accordance with at least some exemplary embodiments of the present disclosure. Specifically, Fig.14A The variable focus multi-sensor imaging device 1400 is depicted from a front perspective. Fig. 14B The variable focal length multi-sensor imaging device 1400 is depicted from a top-down orthogonal view. Fig. 14C The variable focus multi-sensor imaging device 1400 is depicted from a front orthogonal view.

[0168] As shown, the variable focus multi-sensor imaging device 1400 includes a variable focus multi-sensor imaging engine 1200 housed within a particular device base 1402. In this regard, the device base 1402 can be configured to accommodate each of the components described with respect to the variable focus multi-sensor imaging engine 1200. For example, in this regard, the device base 1402 can be designed and / or modified to define a variable focus lens assembly space 1404, such as Fig.15 As shown. The variable focus lens assembly space 1404 can be configured to fit a variable focus lens barrel assembly (e.g., variable focus lens barrel assembly 100) within the defined variable focus lens assembly space 1404. In some embodiments, the device base 1402 includes an existing device base that is partially modified to define the variable focus lens assembly space 1404. In this regard, the variable focus lens assembly can be implemented in a variable focus multi-sensor imaging device without affecting other configurations of the variable focus multi-sensor imaging engines 1200, 1300. Additionally or alternatively, in some embodiments, the device base 1402 is designed to enable the variable focus lens assembly 100 to be removed and / or replaced without disassembling the entire variable focus multi-sensor imaging device 1400. For example, as Fig.15 As shown, in some embodiments, the variable focus lens assembly 100 can be easily removed from and / or inserted into the variable focus lens assembly space 1404 for operation. In some such specific implementations, the variable focus lens assembly space 1404 includes one or more hardware support structures, protrusions, etc., which are configured to engage the variable focus lens assembly within the variable focus lens assembly space 1404 and / or otherwise enable a connection between the variable focus lens assembly and one or more components of the variable focus multi-sensor imaging engine 1200, 1300 (such as an imaging board).

[0169] In some embodiments, the variable focus lens assembly is designed to fit into a minimal form factor device. For example, in this regard, in some embodiments, the variable focus lens assembly 100 is designed to fit within a device mount 1402 for use within a small form factor mobile imaging engine. The overlapping and compact nature of the variable focus lens assembly 100 enables the assembly to fit within a highly constrained form factor typically associated with such mobile imaging environments. For example, in some embodiments, the variable focus lens assembly 100 is designed to have a height of less than 7 millimeters, such that the variable focus lens assembly 100 can fit within a variety of conventional mobile device mounts.

[0170] Such imaging devices may also be integrated into any number of larger devices, housings, etc. For example, Fig.16A perspective view of an exemplary mobile variable focal length multi-sensor imaging device 1600 is shown. The mobile variable focal length multi-sensor imaging device 1600 includes a mobile device base designed to fit one or more sub-devices and / or sub-assemblies therein. For example, as shown, the mobile variable focal length multi-sensor imaging device 1600 includes a mobile phone mobile device base 1602. The mobile phone mobile device base 1602 can be a small form factor device base, such as such that the base is limited based on a limited device height. In some such embodiments, for example, the mobile phone mobile device base 1602 includes a conventional mobile device base associated with a device height of approximately 7 millimeters (e.g., 6.8-7.5 mm).

[0171] In addition, as shown, the mobile variable focal length multi-sensor imaging device 1600 includes the variable focal length multi-sensor imaging device 1400. In this regard, the variable focal length multi-sensor imaging device 1400 can be designed to have a sufficiently small form factor to fit in the mobile device base 1602 of the mobile phone, although the device height is limited. For example, in this regard, the variable focal length multi-sensor imaging device 1400 can be designed to have a height of 6.8 mm. In addition, the variable focal length lens assembly therein includes a minimum profile sufficient to fit in the variable focal length multi-sensor imaging device 1400, and the specific design details enable the assembly to respond within the desired response rate and will not be affected by vibration and / or shock due to the fixation of the components (e.g., using one or more bearing balls), and realize the minimum physical engagement components for moving the lens barrel assembly therein.

[0172] Having described various aspects of a variable focal length lens assembly and associated apparatus, additional descriptions are provided with respect to components in one or more variable focal length lens assemblies according to at least some exemplary embodiments herein. It should be understood that, in this regard, the operations for assembling a variable focal length lens assembly as described herein provide a specific process that can be used to form a specific machine for utilization as described herein. Additionally or alternatively, it should be understood that one or more operations and / or sub-processes of the process can be implemented in any order, such that the process of an embodiment can include one or more steps in an order other than the order described and / or depicted. Therefore, the specific implementations depicted and / or described should not limit the scope and spirit of the present disclosure.

[0173] Fig.17 A flow chart depicting exemplary operations of an exemplary process 1900 for assembling a variable focus lens assembly is shown, in accordance with at least some exemplary embodiments of the present disclosure. In some embodiments, a machine operator performs some or all of the depicted operations.

[0174] Process 1700 begins at box 1702. Box 1702 includes assembling a lens barrel, a pair of positioning magnets, and an imaging lens to form a lens barrel assembly. In addition, in at least some such embodiments, the lens barrel assembly includes a first positioning magnet in the pair of positioning magnets, which is mounted opposite to a second positioning magnet in the pair of positioning magnets. In some embodiments, each positioning magnet is mounted using one or more adhesives and / or chemical fixing methods. In other embodiments, each positioning magnet is physically fixed by engaging with the lens barrel. Additionally or alternatively, the lens barrel assembly also includes a plurality of bearing slots engraved in a surface of a housing of the lens barrel assembly. In some embodiments, the process for assembling the lens barrel, the pair of positioning magnets, and the imaging lens to form a lens barrel assembly includes one or more sub-processes, such as described below with respect to Fig.18 The process 1800 is described.

[0175] Block 1704 includes fitting each of the bearing slots of the lens barrel assembly with a bearing ball. In this regard, the bearing ball may be selected from any of the numerous options previously described. In some non-limiting exemplary embodiments, the lens barrel assembly may include only four bearing slots. Thus, only four bearing balls, one in each slot, may be inserted into the four bearing slots.

[0176] Block 1706 includes inserting the lens barrel assembly fitted with bearing balls into a module space defined by the module base. The module space can be defined based on one or more external structures (e.g., one or more walls) of the module base, such that the module space defines an internal enclosure defined by the structure of the module base. In some embodiments, the module space is defined to have a sufficient volume size so that the lens barrel assembly can fit within the defined module space. Additionally or alternatively, in some embodiments, the module base includes a plurality of bearing slots for positioning and / or aligning the lens barrel assembly within the module base, as described.

[0177] Block 1708 includes engaging at least two pairs of bearing balls with the lens barrel assembly through the bearing slots of the module base. In some embodiments, each of the bearing balls engages a corresponding bearing slot in each of the lens barrel assembly and the module base. In this regard, the lens barrel assembly can be engaged such that when a force is applied to the lens barrel assembly, the lens barrel assembly can slide along the depth of the bearing slots in the lens barrel assembly to reposition within the module base.

[0178] Block 1710 includes assembling a first locating coil assembly and a second locating coil assembly. In this regard, each locating coil assembly may include at least a locating coil and a corresponding locating pad. The locating coil assemblies may be assembled for attachment to one or more other components as described. In some embodiments, the process for assembling the first locating coil assembly and / or the second locating coil assembly includes one or more sub-processes, such as described below with respect to Fig.19 The process 1900 described.

[0179] Frame 1712 includes attaching a first positioning coil assembly and a second positioning coil assembly on the module base. The first positioning coil assembly can be positioned relative to the second positioning coil assembly, for example, such that the first positioning coil assembly is located at a coil position on the top surface of the module base, and the second positioning coil is located at a second coil position on the bottom surface of the module base opposite to the first coil position. In other embodiments, the first positioning coil assembly and / or the second positioning coil assembly are attached to the module base by attaching the first positioning coil assembly and / or the second positioning coil assembly to a positioning coil plate and attaching the positioning coil plate to the module base.

[0180] Fig.18 A flowchart depicting exemplary operations of an exemplary process 1800 for assembling a lens barrel, a pair of positioning magnets, and an imaging lens to form a lens barrel assembly is shown in accordance with at least some exemplary embodiments of the present disclosure. In some embodiments, a machine operator performs some or all of the depicted operations.

[0181] Process 1800 begins at block 1802. Block 1802 includes mounting the pair of locating magnets to a housing of a lens barrel to form a barrel-magnet assembly. As described, the pair of locating magnets can be mounted relative to one another, such as with a first locating magnet located on a top portion of the lens barrel and a second locating magnet located on a bottom portion of the lens barrel. Further as described, each of the locating magnets can be mounted using physical means and / or chemical means, such as one or more epoxies, adhesives, etc.

[0182] Box 1804 includes inserting an imaging lens into the barrel-magnet assembly to form a lens barrel assembly. In some embodiments, the lens barrel is designed to include a front hole and a rear hole to enable light to pass through the lens barrel. In some embodiments, the imaging lens matches or substantially matches the hole shape, which is sufficient to maintain the position of the imaging lens within the imaging barrel. For example, in the exemplary context of a circular hole defining a specific diameter of the lens barrel, the imaging lens may similarly include a diameter that matches the hole, or a circular and / or cylindrical design that is slightly smaller than the diameter of the hole to fit the imaging lens within the hole. In some embodiments, the imaging lens is secured within the barrel-magnet assembly using one or more adhesives and / or physical means. For example, in some embodiments, the barrel lens defines a narrow slot that is configured to receive the imaging lens when the imaging lens is properly positioned and / or aligned. Upon completion of box 1804, in some embodiments, the process returns to one or more other boxes of the process as described and / or shown. For example, in some embodiments, the process returns to box 1704 to continue the above with respect to Fig.17 The process described.

[0183] Fig.19 A flow chart is shown that depicts exemplary operations of an exemplary process 1900 for assembling a positioning coil assembly according to at least some exemplary embodiments of the present disclosure. It should be understood that the process can be repeated for any number of positioning coil assemblies, such as for a first coil assembly and a second coil assembly. In some embodiments, a machine operator performs some or all of the depicted operations.

[0184] Process 1900 begins at block 1902. In some embodiments, block 1902 begins after one or more blocks as depicted and / or described with respect to other flowcharts herein, e.g., after Fig.17 The frame 1708 of description begins afterwards. Frame 1902 comprises inserting the locating pad into the coil interior area defined by the locating coil to form the coil-pad assembly. In some embodiments, the locating coil embodies one or more winding wires so that the winding wires surround the coil interior area. Therefore, the locating pad can have enough size to fit in the coil interior area defined by the locating coil. In some embodiments, the locating pad is fixed in the coil interior area by any of a plurality of known physical and / or chemical means.

[0185] Frame 1904 includes attaching a flexible connector to the coil-pad assembly to form a positioning coil assembly. In some embodiments, the flexible connector includes one or more printed circuit boards, hardware, and / or is configured to enable connection of the positioning coil to power the hardware and / or control other circuits of the hardware. For example, in some embodiments, the flexible connector includes a flexible printed circuit board so that the positioning coil assembly can be connected to one or more circuits, hardware, etc. configured to power the positioning coil to an energized state. In some embodiments, the flexible connector is attached to the lower side of the positioning coil by any of a variety of known physical and / or chemical means. In some such embodiments, the flexible connector can be used to connect the positioning coil assembly to the hardware for powering the positioning coil, and / or will be further connected to the associated hardware of such power supply hardware.

[0186] Upon completion of block 1904, in some embodiments, the process returns to one or more other blocks of the process as described and / or shown. For example, in some embodiments, the process returns to block 1710 to continue the above with respect to Fig.17 The process described.

[0187] It should be understood that the exemplary embodiments described herein are each non-limiting examples of various embodiments of the present disclosure. In this regard, one or more enhancements implemented in various embodiments may be provided in any combination. Additionally or alternatively, in some embodiments, one or more components modified as described herein may be provided.

[0188] For example, some embodiments may provide any number of focal length positions, and other embodiments may provide a limited number of variable focal length positions (e.g., a far focal length position, a neutral focal length position, and a near focal length position). Additionally or alternatively, embodiments of the imaging device may include any number of variable focal length lens assemblies, each of which may be configured in any of a variety of ways, such as within different discrete focal length positions. Such specific implementations are intended to be encompassed by the disclosure herein and the scope of the appended claims provided herein.

[0189] The disclosed embodiments have been described in conjunction with certain exemplary configurations and / or specific implementation details. It should be understood that in other embodiments, for example, components may be embodied by other materials known in the art for forming such components and / or structural equivalents. In addition, it should be understood that embodiments may include any number of known structural elements or utilize known methods for securing components and / or subassemblies thereof (e.g., for securing one or more LEDs or other components to a circuit board or other printed circuit board) without departing from the scope and spirit of the present disclosure.

[0190] Although this specification includes many specific implementation details, these details should not be interpreted as limiting the scope of any disclosed or claimable content, but should be interpreted as a description of specific features for a specific disclosed specific embodiment. Certain features described herein in the context of a separate embodiment may also be implemented in combination in a single embodiment. On the contrary, the various features described in the context of a single embodiment may also be implemented in multiple embodiments or in any suitable sub-combination. In addition, although features may be described above as acting in certain combinations and even initially claimed, in some cases, one or more features from the claimed combination may be removed from the combination, and the claimed combination may be for a sub-combination or a variation of the sub-combination.

[0191] Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that such operations be performed in the particular order shown or in a sequential order, or that all of the operations shown be performed to achieve the desired result. In some cases, multitasking and parallel operation may be advantageous. Therefore, specific embodiments of the present subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions described in the claims can be performed in different orders and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the particular order shown or the sequential order to achieve the desired results described and / or claimed.

Claims

1. An optical component, comprising: shell; an optical member configured to move within the housing, the optical member having two front tubular slots and two rear tubular slots; a first pair of bearing balls, each bearing ball received in a respective one of the two front tubular slots and configured to movably support the optical member within the housing at a first side of the optical member; and a second pair of bearing balls, each bearing ball received in a respective one of the two rear tubular slots and configured to movably support the optical member within the housing at a second side of the optical member, The first pair of bearing balls are arranged crosswise relative to the second pair of bearing balls such that each corner of the optical component receives only one bearing ball when viewed along the optical axis of the optical component. 2 . The optical assembly of claim 1 , wherein each of the two front tubular slots are diagonally opposite each other on the first side of the optical member.

3. The optical assembly of claim 2, wherein each of the two rear tubular slots are diagonally opposite each other on the second side of the optical member.

4. The optical assembly according to claim 1, further comprising: a wired coil plate configured to generate magnetic flux when energized, The optical member further comprises at least one permanent magnet located on at least a portion of the optical member such that the at least one permanent magnet is interactively accessible to the magnetic flux generated by the wired coil plate at all movement positions of the optical member.

5. An optical component according to claim 4, wherein the wired coil plate includes at least one wired coil component, and the at least one wired coil component is configured to move at least a portion of the optical component into a recessed portion defined by the wired coil plate based on a first current supplied to the wired coil component.

6. The optical component of claim 4, wherein the wired coil plate comprises a wired coil assembly configured to move at least a portion of the optical member out of a recessed portion defined by the wired coil plate based on a second current supplied to the wired coil assembly.

7. An optical component according to claim 4, wherein the first end of the housing is toward the front side of the optical component facing the scene to be imaged, and the second end of the housing is toward the rear end of the optical component facing the image sensor, and wherein the wired coil board is positioned toward the rear end of the optical component.

8. The optical assembly of claim 4, wherein the wired coil plate comprises a wired coil assembly configured to move the optical member when energized, and wherein the movement of the optical member changes a focal length of the optical assembly.

9. The optical assembly of claim 8, wherein the wired coil assembly is configured to exert an electromagnetic force on the optical member to move the optical member in a direction parallel to an optical axis of the optical assembly.

10. The optical assembly of claim 1, further comprising: a wired coil plate having a first set of windings and a second set of windings, wherein the first set of windings and the second set of windings define a recessed portion therebetween to accommodate a rear portion of the optical member, wherein a first plane containing the first set of windings is parallel to a second plane containing the second set of windings, and wherein an optical axis of the optical component bisects a line connecting centers of the first plane and the second plane. 11 . The optical assembly of claim 10 , wherein the optical member further comprises a first permanent magnet and a second permanent magnet disposed diagonally opposite the first permanent magnet.

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