Housing of the image capture device

Abstract

The present invention is titled "Housing of an Image Capturing Device". The present invention discloses a housing of an imaging unit. The housing includes an outer surface and an inner surface, wherein the inner surface of the housing defines a lens passage, and the size of the lens passage is set to receive a lens barrel. Further, the inner surface of the housing defines a helical step in the lens passage, wherein the helical step projects outwardly into the lens passage, and wherein the helical step is angled at a first predetermined pitch. Further, the inner surface of the lens passage defines a gluing pit in the lens passage, and the gluing pit extends from the inner surface of the housing to the outer surface of the housing such that a first edge surface defining a part of the perimeter of the gluing pit is coplanar with the helical step.

Description

[0001] This application is a divisional application of the Chinese patent application titled "Housing of an Image Capturing Device" with application number 202011074345.3, filed on October 9, 2020. Technical Field

[0002] Exemplary embodiments of the present disclosure generally relate to image capturing devices, and more particularly to housings of imaging units in image capturing devices. Background Art

[0003] Generally, image capturing devices (such as, but not limited to, cameras, barcode scanners, and imagers) include an imaging unit configured to capture an image of an object. The imaging unit also includes a housing, an image sensor, and a lens barrel. The housing can be configured to receive the image sensor and the lens barrel in such a way that ambient light passes through the lens barrel and focuses on the image sensor. To ensure that the light from the lens barrel focuses on the image sensor, the lens barrel and the image sensor need to be aligned with each other.

[0004] In some examples, the housing may include features, such as flanges and protrusions, for defining the locations where the lens barrel and the image sensor will be positioned or mounted. Thus, the features in the housing facilitate the alignment between the lens barrel and the image sensor. Additionally, to enhance the alignment between the lens barrel and the image sensor, an adhesive may be used to fixedly attach the lens barrel and the image sensor to the housing. However, in some examples, after the adhesive is applied, the adhesive may shrink (e.g., -0.015 mm). This property of the adhesive may cause the lens barrel to move within the housing, resulting in misalignment between the image sensor and the lens barrel.

[0005] The applicant has identified many defects and problems associated with conventional housings of image capturing devices. Through the efforts, wisdom, and innovation, solutions including those developed in the embodiments of the present disclosure have addressed many of these identified problems, and many examples of these solutions are described in detail herein. Summary of the Invention

[0006] According to the embodiments disclosed herein, an image capture device is disclosed. The image capture device includes an imaging unit, which also includes a housing. The housing has an inner surface. The inner surface of the housing defines a lens channel. In addition, the inner surface of the housing defines a spiral step protruding outward from the inner surface into the lens channel. The spiral step is angled at a first predetermined pitch. The inner surface of the lens channel further defines a glue pit in the lens channel, the glue pit extending from the inner surface of the housing to the outer surface of the housing, such that a first edge surface defining a portion of the periphery of the glue pit is parallel to a portion of the spiral step. In addition, the imaging unit includes a lens barrel received in the lens channel. The lens barrel includes an outer surface defining a cam, such that the cam protrudes from the outer surface of the lens barrel. The outer surface of the lens barrel further defines a spiral rib protruding from the outer surface of the lens barrel, wherein the spiral rib has a second predetermined pitch, wherein the first predetermined pitch is the same as the second predetermined pitch. A portion of the spiral rib extends from the first edge surface, which defines the portion of the periphery of the glue pocket.

[0007] According to the embodiments disclosed herein, a housing for an imaging unit is disclosed. The housing includes an outer surface and an inner surface. The inner surface of the housing defines a lens channel, the lens channel being sized to receive a lens barrel. Furthermore, the inner surface of the housing defines a spiral step in the lens channel, wherein the spiral step protrudes outward into the lens channel, and wherein the spiral step is angled at a first predetermined pitch. Furthermore, the inner surface of the lens channel defines a gluing recess in the lens channel, the gluing recess extending from the inner surface of the housing to the outer surface of the housing such that a first edge surface defining a portion of a perimeter of the gluing recess is parallel to a portion of the spiral step. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The description of the exemplary embodiments may be read in conjunction with the accompanying drawings. It should be understood that for simplicity and clarity of illustration, the elements shown in the drawings are not necessarily drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements. Embodiments incorporating the teachings of the present disclosure are shown and described with respect to the accompanying drawings set forth herein, in which:

[0009] Figure 1 shows a perspective view of an image capture device according to one or more embodiments described herein;

[0010] Figure 2 shows a perspective view of an imaging unit according to one or more embodiments described herein;

[0011] Figure 3 shows an exploded view of an imaging unit according to one or more embodiments described herein;

[0012] Figure 4 shows a cross-sectional view of a housing of an imaging unit according to one or more embodiments described herein;

[0013] Figure 5 Accordingly, a perspective view of a first lens barrel according to one or more embodiments described herein is shown;

[0014] Figure 6 Accordingly, a side view of a first lens barrel according to one or more embodiments described herein is shown; and

[0015] Figure 7 Shown is a top view of an imaging unit according to one or more embodiments described herein. DETAILED DESCRIPTION

[0016] Some embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings, which illustrate some, but not all, embodiments of the present disclosure. Indeed, these disclosures may 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 this disclosure will satisfy applicable legal requirements. Throughout, like reference numerals refer to like elements. The terminology used in this patent is not meant to be limiting, and the devices described herein, or portions thereof, may be attached or utilized in other orientations.

[0017] The term "comprising" is intended to mean including, but not limited to, and should be interpreted in the manner commonly used in the patent context. It should be understood that the use of broad terms such as "comprising," "including," and "having" provides support for narrower terms such as "consisting of," "consisting essentially of," and "composed essentially of."

[0018] The phrases "in one embodiment," "according to one embodiment," etc. generally mean that the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure, or may be included in more than one embodiment of the present disclosure (importantly, such phrases are not necessarily referring to the same embodiment).

[0019] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations.

[0020] If the specification states that a component or feature “may,” “is capable of,” “can,” “should,” “will,” “preferably,” “possibly,” “normally,” “optionally,” “for example,” “often,” or “might” (or other such words) be included or have a characteristic, then the particular component or feature is not required to be included or have the characteristic. Such a component or feature may optionally be included in some embodiments or may be excluded.

[0021] The term “image sensor” is referred to as a solid-state device capable of generating an electrical signal corresponding to an optical signal projected onto the image sensor. Some examples of image sensors may include color or monochrome 1D or 2D CCDs, CMOSs, NMOSs, PMOSs, CID CMD solid-state image sensors, or any other device capable of generating an electrical signal based on the received optical signal.

[0022] Generally, it should be understood that an image capture device (such as a mark reader or barcode scanner) has an imaging unit capable of capturing and processing an image. In some examples, the imaging unit may include a housing for one or more components such as one or more lenses (positioned in a lens barrel), an image sensor, and a controller. In an exemplary embodiment, the one or more components may operate in combination to facilitate the image capture device in capturing and processing an image of an object. For example, one or more lenses in the lens barrel may focus light obtained from the object onto the image sensor, which then generates an electrical signal. Subsequently, the controller may process these electrical signals to present the captured image.

[0023] In some examples, the alignment between the lens barrel and the image sensor may determine the quality of the captured image. Misalignment between the lens barrel and the image sensor may result in a captured out-of-focus image, which may be undesirable. To keep the lens barrel and the image sensor in alignment, the housing of the imaging unit may define features such as grooves or flanges that can ensure the lens barrel and the image sensor are aligned with each other. To this end, an adhesive may be applied between the lens barrel and the image sensor to fix the lens barrel in a certain position within the housing, thereby aligning the lens barrel with the image sensor. In some examples, the curing of the adhesive causes the adhesive to shrink by a few millimeters or micrometers. This phenomenon may change the position of the lens barrel within the imaging unit, which may further result in misalignment between the image sensor and the lens barrel.

[0024] The apparatus described herein discloses an image capture device including an imaging unit. The imaging unit also includes a cubical housing (hereinafter referred to as the housing) having a sensor end portion and a scanning window end portion. In addition, the housing has an outer surface and an inner surface. The inner surface of the housing defines at least one lens channel. In some examples, the at least one lens channel has a cylindrical shape and extends from the sensor end portion to the scanning window end portion. In addition, in some examples, the size of the at least one lens channel can be set to accommodate a lens barrel. For example, the size of the at least one lens channel can be set to be larger than the lens barrel so that the lens barrel is seamlessly received in the at least one lens channel.

[0025] Furthermore, the inner surface of the housing defines a helical ramp within the at least one lens passage, such that the helical ramp protrudes from the inner surface of the housing and is circumferentially rotatable about a first longitudinal axis of the at least one lens passage at a first predetermined pitch relative to a first transverse axis of the housing. In an exemplary embodiment, the first predetermined pitch of the helical ramp may correspond to an angle between the helical ramp and the first transverse axis.

[0026] In an exemplary embodiment, the spiral rib may have a first edge and a second edge. The first edge of the spiral slope faces the scanning window end portion of the housing, while the second edge faces the sensor end portion of the housing. In an exemplary embodiment, the distance between the first edge of the spiral slope and the second edge of the spiral slope along the first central longitudinal axis of the at least one lens channel corresponds to a first width of the spiral slope. In some examples, the spiral slope may have a constant first width as the spiral slope rotates about the first central longitudinal axis of the at least one lens channel. In some examples, the spiral slope may have a first end and a second end. The first end of the spiral slope and the second end of the spiral slope correspond to circumferential ends of the spiral slope. Furthermore, due to the first predetermined pitch of the spiral slope, the first end of the spiral slope is positioned proximal to the scanning window end portion of the housing, while the second end of the spiral slope is positioned proximal to the sensor end portion of the housing. When the spiral slope is defined to rotate at least 360 degrees about the first central longitudinal axis of the at least one lens channel, the first end of the spiral slope may be positioned adjacent to the second end of the spiral slope along the first central longitudinal axis of the at least one lens channel. Thus, the first end and the second end combine to define a barrier section.The purpose of the barrier section is described further below.

[0027] In an alternative embodiment, the helical ramp may extend from a first edge of the helical ramp to a sensor end portion of the housing. In such embodiments, when viewed from the scan window end portion of the housing, the helical ramp may not have a second edge, and the first edge of the helical ramp may define a first step. Since the helical ramp circumferentially rotates about a first longitudinal axis of at least one lens channel at a first predetermined pitch, the first step also rotates about the first longitudinal axis of the at least one lens channel at the first predetermined pitch.

[0028] In some examples, the first step divides the at least one lens channel into a first portion and a second portion. The first portion of the at least one lens channel extends from the scan window end portion of the housing to the first step (defined by the helical ramp and the inner surface of the housing). The second portion of the at least one lens channel extends from the first step to the sensor end portion of the at least one lens channel. Since the first step is defined by the helical ramp protruding from the inner surface of the housing and the helical ramp extends from the first step to the sensor end portion of the housing, the diameter of the at least one lens channel in the first portion is greater than the diameter of the at least one lens channel in the second portion.

[0029] In some examples, the first step may have a first end and a second end. The first end of the first step and the second end of the first step correspond to the circumferential ends of the helical ramp. Further, due to the first predetermined pitch of the first step, the first end of the first step is positioned proximal to the scan window end portion of the housing, while the second end of the first step is positioned proximal to the sensor end portion of the housing. In the case where the first step is defined to rotate about a first central longitudinal axis of at least one lens channel by at least 360 degrees, the first end of the first step may be positioned adjacent to the second end of the first step along the first central longitudinal axis of the at least one lens channel. Thus, the first end and the second end of the first step define a blocking section.

[0030] In addition, the inner surface of the housing defines at least one bonding recess within at least one lens channel. The at least one bonding recess may extend from the inner surface of the housing to the outer surface of the housing. In some examples, the at least one bonding recess may correspond to a through hole extending from the inner surface of the housing to the outer surface of the housing. It should generally be understood that when a through hole is defined in the housing, one or more edge surfaces defining the perimeter of the through hole are also formed. Therefore, the perimeter of the at least one bonding recess may be defined by one or more edge surfaces extending from the outer surface of the housing to the inner surface of the housing. In some examples, the one or more edge surfaces may define the shape of the at least one bonding recess. In one exemplary embodiment, the at least one bonding recess may have an arcuate shape, such that a first edge surface of the one or more edge surfaces is parallel to a second edge surface of the one or more edge surfaces. Furthermore, a third edge surface and a fourth edge surface of the one or more edge surfaces may have a semicircular profile. For example, the third edge surface and the fourth edge surface may have a C-shaped profile. In an exemplary embodiment, the inner surface of the housing may define the at least one gluing recess in such a manner that a first edge surface (of the one or more edge surfaces defining the perimeter of the at least one gluing recess) can be positioned proximal to the sensor end portion of the housing, while a second edge surface (of the one or more edge surfaces defining the perimeter of the at least one gluing recess) can be positioned proximal to the scanning window end portion of the housing. Furthermore, in some examples, the first edge surface may be parallel to a portion of the first edge of the spiral slope that defines at least one lens channel. More specifically, the first edge surface (proximal to the sensor end portion of the housing) is parallel to a portion of the first edge of the spiral slope that is positioned below the first edge portion along the vertical axis of the housing. To this end, a first plane passing through the first edge surface along the vertical axis of the housing may be parallel to a second plane passing through a portion of the first edge of the spiral slope along the vertical axis of the housing. Because the second edge surface is parallel to the first edge surface and the first edge surface is parallel to a portion of the first edge of the spiral slope, the first edge surface, the second edge surface, and the portion of the first edge of the spiral slope are parallel to one another. In some examples, the scope of the present disclosure is not limited to the first edge surface being parallel to the second edge surface. In alternative embodiments, the first edge surface may be parallel to a portion of the first edge of the spiral ramp, however the first edge surface may not be parallel to the second edge surface.

[0031] In an exemplary embodiment, at least one glue pit may be defined proximal to the scanning window end portion of the housing such that the at least one glue pit is defined between the scanning end portion of the housing and the spiral ramp. Furthermore, the spiral ramp may be defined proximal to the sensor end portion such that the spiral ramp is defined between the glue pit and the sensor end portion of the housing.

[0032] In an exemplary embodiment, at least one lens channel is configured to receive a lens barrel from an end portion of a scanning window. In an exemplary embodiment, the lens barrel may correspond to a lens housing for one or more lenses. As discussed, one or more lenses may be configured to focus light received from an object onto an image sensor positioned at a sensor end portion of the housing. In some examples, the lens barrel has a sensor end, a light receiving end, and an outer surface extending between the sensor end of the lens barrel and the light receiving end of the lens barrel. The outer surface of the lens barrel defines at least one cam that projects from the outer surface of the lens barrel and extends along a second longitudinal central axis of the lens barrel. In some examples, the at least one cam may have a first end, a second end, and a central portion. The first end of the at least one cam is configured to be proximal to the sensor end of the lens barrel, while the second end of the at least one cam is proximal to the light receiving end of the lens barrel. In some examples, the central portion of the at least one cam extends between the first end of the at least one cam and the second end of the at least one cam. In an exemplary embodiment, the at least one cam may have a trapezoidal shape, an oval shape, a rectangular shape, etc.

[0033] Additionally, the outer surface of the lens barrel defines a helical rib that projects from the outer surface of the lens barrel. Further, the outer surface of the lens barrel defines a helical rib such that the helical rib circumferentially rotates about the second longitudinal central axis of the lens barrel. Additionally, the outer surface defines a helical rib such that the helical rib is angled relative to a second transverse axis of the lens barrel at a second predetermined pitch. In an exemplary embodiment, the second predetermined pitch may correspond to the angle between the helical rib and the second transverse axis of the lens barrel. In some examples, the first predetermined pitch of the helical ramp is the same as the second predetermined pitch of the helical rib. Since the outer surface of the lens barrel defines a cam along the second longitudinal central axis of the lens barrel and since the outer surface of the lens barrel defines a helical rib to circumferentially rotate about the longitudinal central axis of the lens barrel, in some examples the helical rib may intersect the cam. For example, the helical rib may intersect the cam at the second end of the cam and at the central portion of the cam.

[0034] In an exemplary embodiment, the helical rib may have a first edge and a second edge. The first edge of the helical rib faces the sensor end of the lens barrel, while the second edge of the helical rib faces the light receiving end of the lens barrel. Additionally, the second width of the helical rib may be defined as the distance between the first edge and the second edge of the helical rib along the second central longitudinal axis of the lens barrel. In an exemplary embodiment, when the helical rib rotates about the second central longitudinal axis of the lens barrel, the helical rib may have a constant second width. In an alternative embodiment, the helical rib may not have a second edge. In such an embodiment, the helical rib may extend from the first edge of the helical rib to the light receiving end of the lens barrel. Additionally, in such an embodiment, the first edge may correspond to a second step. In some examples, the second step of the helical rib divides the lens barrel into a first portion and a second portion. The first portion of the lens barrel extends from the light receiving end portion to the second step of the helical rib, while the second portion of the lens barrel extends from the second step of the helical rib to the sensor end portion of the lens barrel. Additionally, since the helical rib protrudes from the outer surface of the lens barrel and the helical rib extends between the second step of the helical rib and the light receiving end of the lens barrel, the diameter of the first portion of the lens barrel is greater than the diameter of the second portion of the lens barrel. Additionally, in such an embodiment (where the helical rib extends between the light receiving end of the lens barrel and the first edge of the helical rib), the cam may not have a second end.

[0035] In the case where the lens barrel is received in at least one lens channel, the first end of the cam abuts the first edge of a helical ramp defined on the inner surface of the at least one lens channel. In an alternative embodiment, the first end of the cam abuts a first step defined by the helical ramp and the inner surface of the housing. In some examples, the cam is capable of sliding on the helical ramp, thereby enabling adjustment of the position of the lens barrel in the at least one lens channel along the first central longitudinal axis of the at least one lens channel. For example, to adjust the position of the lens barrel in the at least one lens channel, the lens barrel may be rotated about the second central longitudinal axis of the lens barrel while the cam on the lens barrel abuts the first edge of the helical ramp. This rotation causes the cam to slide on the first edge of the helical ramp in the at least one lens channel. Since the first edge of the helical ramp has a first predetermined pitch relative to the first transverse axis of the housing, the sliding of the cam on the step changes the position of the lens barrel along the first central longitudinal axis of the at least one lens channel. In some examples, the position of the lens barrel in the at least one lens channel along the first central longitudinal axis of the at least one lens channel may be adjusted to change the focus of one or more lenses in the lens barrel. The focus of the lens barrel may be adjusted to ensure that light received by the lens barrel is focused on an image sensor (positioned at the sensor end portion of the housing).

[0036] In some examples, rotation of the lens barrel within at least one lens channel is limited by a stop section defined by a first end of the helical ramp and a second end of the helical ramp. For example, the lens barrel may rotate in a clockwise direction within at least one lens channel until a cam on the lens barrel abuts the stop section (defined by the first end of the helical ramp and the second end of the helical ramp). The stop section prevents further rotation of the lens barrel in the clockwise direction. In some examples, the lens barrel may then rotate in a counterclockwise direction.

[0037] In an exemplary embodiment, additionally, when the lens barrel is received within at least one lens channel and a first end of at least one cam abuts a first edge of the helical ramp, a portion of the helical rib (defined by the outer surface of the lens barrel) extends from a second edge surface (proximal to the scan window end portion of the housing) of one or more edge surfaces defining a perimeter of at least one gluing pit. Since a second predetermined pitch of the helical rib is the same as a first predetermined pitch of the helical ramp (defined within the lens channel), a distance between the helical rib and the helical ramp remains constant and is independent of a position of the lens barrel within the at least one lens channel (along a first central longitudinal axis of the at least one lens channel). As discussed, the helical ramp and a first edge surface (proximal to the sensor end portion of the housing) of one or more edge surfaces defining a perimeter of at least one gluing pit are parallel. Accordingly, a distance between a first edge of the helical rib (facing the sensor end of the lens barrel) and the first edge surface (proximal to the scan window end portion of the housing) of one or more edge surfaces defining a perimeter of the gluing pit also remains constant and is independent of a position of the lens barrel within the at least one lens channel (along the first central longitudinal axis of the at least one lens channel).

[0038] In this exemplary embodiment, since the distance between the first edge of the helical rib (facing the sensor end of the lens barrel) and the first edge surface among one or more edge surfaces defining the perimeter of at least one gluing pit (proximal to the sensor end portion of the housing) remains constant, the amount of adhesive placed between the first edge of the helical rib (facing the sensor end of the lens barrel) and the first edge surface among one or more edge surfaces defining the perimeter of at least one gluing pit (proximal to the sensor end portion of the housing) remains constant across various manufactured imaging units. Thus, manufacturing consistency is achieved across multiple imaging units. For example, variations due to curing of the glue (e.g., movement of the lens barrel within the lens channel due to curing of the glue) remain consistent during the manufacture of various imaging units. Thus, any expected changes in the focus of the lens barrel (due to glue curing) can be compensated for consistently across various imaging units prior to glue curing. Additionally, shrinkage of the adhesive pulls the helical rib on the lens barrel towards the helical ramp in at least one lens channel, which causes the cam to be in close proximity to the step formed by the helical ramp.

[0039] Figure 1 FIG. 100 shows a perspective view of an image capture device 102 in accordance with one or more embodiments described herein. In an exemplary embodiment, the image capture device 102 may correspond to a barcode scanner that may be capable of scanning and reading machine-readable codes such as barcodes, QR codes, 2D codes, Datamatrix codes, and the like. In some examples, without departing from the scope of the present disclosure, the image capture device 102 may also be capable of reading and recognizing text from images.

[0040] In an exemplary embodiment, the image capture device 102 may include a head portion 104, a handle portion 106, and a trigger button 108. In some examples, the head portion 104 may have an arc shape that has a scan window end 110 and a rear end 112. In an exemplary embodiment, the scan window end 110 and the rear end 112 of the head portion 104 may be spaced apart from each other along a first transverse axis 118. In an exemplary embodiment, the head portion 104 may define a scan window 114 at the scan window end 110 of the head portion 104. In an exemplary embodiment, the scan window 114 may be configured to receive an imaging unit 116. In an exemplary embodiment, the imaging unit 116 may include one or more components for performing a scanning operation (e.g., a processor, a lens, an illumination device, a camera, etc.). In connection with Figures 2 to 7 The structure of the imaging unit 116 is further described.

[0041] The handle portion 106 may extend from the head portion 104 along a first longitudinal axis 120 of the image capture device 102. In some examples, the trigger button 108 may be positioned on the handle portion 106. In some examples, without departing from the scope of the present disclosure, the trigger button 108 may be positioned on the head portion 104.

[0042] By way of example, a user of the image capture device 102 may point the image capture device 102 in the direction of a target object such that the scanning window end 110 is pointed at the target object. The user may input a command (e.g., via the trigger button 108) and cause the imaging unit 116 to scan the target object. In some embodiments, information collected by the imaging unit 116 may be transmitted via a communication network (not shown) to a host (not shown).

[0043] Figure 2 and Figure 3 Perspective view 200 and exploded view 300 of the imaging unit 116 in accordance with one or more embodiments described herein are shown, respectively. Referring Figure 2 , the imaging unit 116 includes a housing 202, a first lens barrel 204, a second lens barrel 206, an illumination and aiming lens assembly 208, a first image sensor 209, and a second image sensor 211.

[0044] The housing 202 of the imaging unit 116 corresponds to a cubic housing including a scanning window end portion 210 and a sensor end portion 212. In an exemplary embodiment, the scanning window end portion 210 may be spaced apart from the sensor end portion 212 along a second transverse axis 214. The sensor end portion 212 of the housing 202 may be configured to fixedly receive the first image sensor 209 and the second image sensor 211. Further, in the case where the imaging unit 116 is received in the head portion 104 of the image capture device 102, the scanning window end 210 of the housing 202 may be configured to point at the scanning window end 110 of the head portion 104.

[0045] In addition, the housing 202 of the imaging unit 116 has a top portion 216, a bottom portion 218, a first side portion 220, and a second side portion 222. In an exemplary embodiment, the bottom portion 218 is parallel to the top portion 216. Further, the bottom portion 218 and the top portion 216 are spaced apart from each other along a vertical axis 224. In some examples, the first side portion 220 is parallel to the second side portion 222. Further, the first side portion 220 and the second side portion 222 are spaced apart along a second longitudinal axis 226. In an exemplary embodiment, the second lateral axis 214, the vertical axis 224, and the second longitudinal axis 226 are perpendicular to each other.

[0046] In some examples, the top portion 216 of the housing 202 has a top surface 228, while the bottom portion 218 has a bottom surface 230. Similarly, in some examples, the first side portion 220 and the second side portion 222 have a first side surface 232 and a second side surface 234, respectively. In an exemplary embodiment, the top surface 228, the bottom surface 230, the first side surface 232, and the second side surface 234 together define the outer surface 236 of the housing 202.

[0047] Reference Figure 3 , the housing of the imaging unit 116 has an inner surface 238. The inner surface 238 of the housing 202 defines a first lens channel 302 such that the first lens channel is positioned proximal to the first side 220 of the housing 202 and distal to the second side 222 of the housing 202. In addition, the inner surface 238 of the housing 202 defines a second lens channel 304 such that the second lens channel is positioned proximal to the second side 222 of the housing 202 and distal to the first side 220 of the housing 202. In an exemplary embodiment, the first lens channel 302 and the second lens channel 304 extend between the scan window end portion 210 and the sensor end portion 212 of the housing 202. In some examples, the first lens channel 302 and the second lens channel 304 may have a cylindrical shape. In addition, the first lens channel 302 and the second lens channel 304 are sized to receive the first lens barrel 204 and the second lens barrel 206.

[0048] In addition, the inner surface 238 of the housing 202 defines a first cementing pit 306 and a second cementing pit 305 in the first lens channel 302. In addition, the inner surface 238 of the housing defines a third cementing pit 307 and a fourth cementing pit 308 in the second lens channel 302. The second cementing pit 305 in the first lens channel 302 is shown in Figure 4 In an exemplary embodiment, the first cementing pit 306, the second cementing pit 308, the third cementing pit 307, and the fourth cementing pit 308 correspond to through holes extending from the inner surface 238 of the housing 202 to the outer surface 236 of the housing 202. For example, in the second lens channel 304, the fourth cementing pit 308 extends from the inner surface 238 of the housing 202 to the top surface 228 of the housing 202. Similarly, in the second lens channel 304, the third cementing pit 307 extends from the inner surface 238 of the housing 202 to the bottom surface 230 of the housing 202.

[0049] In an exemplary embodiment, the first cementing pit 306, the second cementing pit 305, the third cementing pit 307, and the fourth cementing pit 308 have the same structure. The structural details of the first cementing pit described below also apply to the second cementing pit 305, the third cementing pit 307, and the fourth cementing pit 308.

[0050] In some examples, defining the bonding pit (e.g., the first bonding pit 306) forms one or more edge surfaces in the housing 202, and the edge surface(s) can define the perimeter of the first bonding pit 306. The one or more edge surfaces can extend from the inner surface 238 of the housing 202 to the outer surface 236 of the housing 202. In an exemplary embodiment, the one or more edge surfaces (defining the perimeter of the first bonding pit 306) include a first edge surface 312, a second edge surface 314, a third edge surface 316, and a fourth edge surface 318.

[0051] In an exemplary embodiment, the first edge surface 312 of the one or more edge surfaces (defining the perimeter of the first bonding pit 306) can be adjacent to the sensor end portion 212 of the housing 202, and the second edge surface 314 of the one or more edge surfaces (defining the perimeter of the first bonding pit 306) can be adjacent to the scan window end portion 210 of the housing 202. Additionally, the first edge surface 312 of the one or more edge surfaces (defining the perimeter of the first bonding pit 306) is parallel to the second edge surface 314 of the one or more edge surfaces (defining the perimeter of the first bonding pit 306). In some examples, the scope of the present disclosure is not limited to the second edge surface 314 being parallel to the first edge surface 312. In an exemplary embodiment, without departing from the scope of the present disclosure, the first edge surface 312 may not be parallel to the first edge surface 314.

[0052] In an exemplary embodiment, the first edge surface 312 of the one or more edge surfaces is spaced apart from the second edge surface 314 by a first predetermined distance along the second transverse axis 214 of the housing 202. The importance of the first predetermined distance will be described later in connection with Figure 7 the description of the first predetermined distance.

[0053] In some examples, a third edge surface 316 of the one or more edge surfaces (defining a perimeter of the first gluing pit 306) may be parallel to a fourth edge surface 318. Further, the third edge surface 316 is spaced from the fourth edge surface 318 along a second longitudinal axis 226 of the housing 202. Further, the third edge surface 316 may be adjacent to a first side 220 of the housing 202, while the fourth edge surface 318 may be adjacent to a second side 222 of the housing 202. In some examples, the scope of the present disclosure is not limited to the third edge surface 316 being parallel to the fourth edge surface 318. In an exemplary embodiment, the third edge surface 316 and the fourth edge surface 318 may have a C-shaped profile and an inverted C-shaped profile, respectively. In some examples, the scope of the present disclosure is not limited to the third edge surface 316 and the fourth edge surface 318 having a C-shaped profile and an inverted C-shaped profile, respectively. In an exemplary embodiment, without departing from the scope of the present disclosure, the third edge surface 316 and the fourth edge surface 318 may have any other profile.

[0054] In an exemplary embodiment, the inner surface 238 defines a helical ramp in each of the first lens channel 302 and the second lens channel 304 (further described in Figure 4 . The structure of the helical ramp is further described in connection with Figure 4 .

[0055] Figure 4 FIG. 400 is a cross-sectional view of the housing 202 obtained when the housing 202 is cut by a first plane 401 along a vertical axis 224 through the first gluing pit 306 and the second gluing pit 305, showing an embodiment according to one or more of the embodiments described herein. The cross-sectional view 400 of the housing 202 shows that the inner surface 238 of the housing 202 defines a helical ramp 402 such that the helical ramp 402 projects from the inner surface 238 of the housing 202 within the first lens channel 302. Further, the helical ramp 402 rotates about a first central longitudinal axis 404 of the first lens channel 302. Further, the helical ramp 402 is angled at a first predetermined pitch with respect to a first transverse axis 403 of the housing 202. In an exemplary embodiment, the first predetermined pitch of the helical ramp 402 may correspond to the angle between the helical ramp 402 and the first lateral axis 403.

[0056] In some examples, the spiral ramp 402 protrudes from the inner surface 238 of the housing 202 such that the spiral ramp 402 has a first edge 405 and a second edge 407. The first edge 405 of the spiral ramp 402 faces the scanning window end portion 210 of the housing 202, while the second edge 407 of the spiral ramp 402 faces the sensor end portion 212 of the housing 202. In an exemplary embodiment, the spiral ramp 402 can have a first width along the vertical axis 224 of the housing 202. Furthermore, the spiral ramp 402 has a continuous width as the spiral ramp 402 rotates about the first central longitudinal axis 404 of the first lens passage 302. In some examples, the first width of the spiral ramp 402 along the vertical axis 224 causes the first edge 407 of the spiral ramp to define a first step 406 when viewed from the scanning window end portion 210 of the housing 202. The spiral ramp 402 rotates about the first central longitudinal axis 404 of the first lens channel 302, and the first step 406 (formed by the spiral ramp 402 and the inner surface 238) also rotates about the first central longitudinal axis 404 of the first lens channel 302 and may have a first predetermined pitch relative to the first lateral axis 403. Thus, the first step 406 may correspond to a spiral step that rotates about the first central longitudinal axis 404 of the first lens channel 302. In some examples, when viewed from the top surface 228 of the housing, the first step 406 may have a portion 408 positioned below the first edge surface 312 (of the one or more edge surfaces defining the perimeter of the first glue pocket 306) along the vertical axis 224 of the housing 202. Furthermore, when viewed from the top surface 228 of the housing, the first step 406 may have a portion 414 positioned above the first edge surface 312 of the one or more edge surfaces defining the perimeter of the second glue pocket 305 on the bottom surface 230 of the imaging unit 116.

[0057] In some examples, the spiral ramp 402 may have a first end and a second end (not shown). The first end of the spiral ramp 402 and the second end of the spiral ramp 402 correspond to the circumferential ends of the spiral ramp. In addition, due to the first predetermined pitch of the spiral ramp 402, the first end of the spiral ramp 402 is positioned proximal to the scanning window end portion of the housing, while the second end of the spiral ramp 402 is positioned proximal to the sensor end portion of the housing. In the case where the spiral ramp 402 is defined as being rotated at least 360 degrees around the first central longitudinal axis 404 of the first lens channel 302, the first end of the spiral ramp may be positioned adjacent to the second end of the spiral ramp 402 along the first central longitudinal axis 404 of the first lens channel 302. Therefore, the first end and the second end combine to define a blocking section. hereinafter in conjunction with Figures 5 to 7 The purpose of the blocking section is further described.

[0058] In an exemplary embodiment, a second plane 410 passing through a portion 408 of the first step 406 along the vertical axis 224 of the housing 202 may be parallel to a third plane 412 passing through a portion of the first edge surface 312 (of the one or more edge surfaces defining the perimeter of the first glue pocket 306) along the vertical axis 224 of the housing 202. In an alternative embodiment, the second plane 410 (passing through a portion 408 of the first step 406) may be coplanar with the third plane 412 passing through the first edge surface 312 (of the one or more edge surfaces defining the perimeter of the first glue pocket 306). Accordingly, a portion 408 of the first step 406 may be coplanar with a portion of the first edge surface 312. For purposes of description, a portion 408 of the first step 406 (hereinafter referred to as a portion of the spiral ramp 402) is considered parallel to the first edge surface 312. In an exemplary embodiment, the spiral ramp 402 is defined by an inner surface 238 between the first glue pocket 306 and the sensor end 212 of the housing 202.

[0059] In an alternative embodiment, the spiral ramp 402 may not have a second edge 407. In such an embodiment, the spiral ramp 402 projects from the inner surface 238 of the housing 202 such that the spiral ramp 402 extends from the first step 406 to the sensor end 212 of the housing 202. Accordingly, the first step 406 divides the first lens channel 302 into a first portion and a second portion. In some examples, the first portion of the first lens channel 302 may extend from the scan window end portion 210 of the housing to the first step 406. The second portion of the first lens channel 302 extends from the first step 406 to the sensor end 212 of the housing 202.

[0060] For the sake of simplicity, Figure 4It is shown that the first bonding pit 306 and the second bonding pit 305 are defined to be located on the first plane 401. In an alternative embodiment, the first bonding pit 306 may be defined to be offset from the second bonding pit 305 along the first lateral axis 118 of the housing 202. For example, the first edge surface 312 of the first bonding pit 306 may be offset from the first edge surface 312 of the second bonding pit 305 along the first lateral axis 118 of the housing 202. Similarly, the second edge surface 314 of the first bonding pit 306 may be offset from the second edge surface 314 of the second bonding pit 305 along the first lateral axis 118 of the housing 202. In some examples, the offset between the first edge surface 312 of the first bonding pit 306 and the first edge surface 312 of the second bonding pit 305 may be determined by the first predetermined pitch of the first step 406. For example, due to the first predetermined pitch of the first step 406, a portion 408 (proximal to the top surface 228 of the housing 202) of the first step 406 is offset from a portion 414 (proximal to the bottom surface 230 of the housing 202) of the first step 406. Thus, the first edge surface 312 of the first bonding pit 306 is offset from the first edge surface 312 of the second bonding pit 305.

[0061] In some examples, the scope of the present disclosure is not limited to the first bonding pit 306, the second bonding pit 305, the third bonding pit 307, and the fourth bonding pit 308 having the same structure. In an exemplary embodiment, the structures of the first bonding pit 306, the second bonding pit 305, the third bonding pit 307, and the fourth bonding pit 308 may vary based on the first predetermined pitch of the spiral ramp 402.

[0062] In an exemplary embodiment, without departing from the scope of the present disclosure, as Figure 4 described, the structure of the spiral ramp 402 in the first lens channel 302 is also applicable to a similar spiral ramp (not shown) defined in the second lens channel 304.

[0063] Referring back to Figure 3 , the first lens channel 302 and the second lens channel 304 are configured to receive the first lens barrel 204 and the second lens barrel 206, respectively. In an exemplary embodiment, without departing from the scope of the present disclosure, the structure of the first lens barrel 204 is similar to the structure of the second lens barrel 206. The structure of the first lens barrel 204 is further described in conjunction with Figure 5 and Figure 6 . The structural details described in Figure 5 and Figure 6 are also applicable to the second lens barrel 206.

[0064] Figure 5 and Figure 6Perspective view 500 and side view 600 of a first lens barrel 204 in accordance with one or more embodiments described herein are shown respectively. Refer to Figure 5 , the first lens barrel 204 includes a lens housing 502 that may be configured to receive a lens assembly (not shown). The lens housing 502 may correspond to a cylindrical housing having a light receiving end 504 and a sensor end 506. Additionally, the lens housing 502 has an outer surface 508 that extends between the light receiving end 504 and the sensor end 506. In an exemplary embodiment, the outer surface 508 of the lens housing 502 defines a first portion 510, a flange portion 512, and a coupling portion 514.

[0065] In an exemplary embodiment, the first portion 510 of the lens housing 502 extends between the light receiving end 504 and a first junction 516 that is located between the first portion 510 and the flange portion 512. The flange portion 512 extends between the first junction 516 and a second junction 602 (see Figure 6 ), which is located between the flange portion 512 and the coupling portion 514. In an exemplary embodiment, the flange portion 512 may correspond to a protrusion extending from the outer surface 508 of the lens housing 502. Additionally, the flange portion 512 may be rotatable about the perimeter of the lens housing 502. In an exemplary embodiment, the diameter of the first lens barrel 204 in the flange portion 512 may be greater than the diameter of the first lens barrel 204 in the first portion 510. In some examples, the outer surface 508 may define the flange portion 512 such that the flange portion 512 is defined proximal to the light receiving end 504 of the lens housing 502 and distal to the sensor end 506 of the lens housing 502. In some examples, without departing from the scope of the present disclosure, the scope of the present disclosure is not limited to the first lens barrel 204 having a flange portion 512.

[0066] In an exemplary embodiment, the coupling portion 514 extends from the second junction 602 (see Figure 6 ) to the sensor end 506 of the lens housing 502. In an exemplary embodiment, the outer surface 508 of the lens housing 502 may define a cam 518 in the (lens housing 502's) coupling portion 514. In some examples, the cam 518 protrudes from the outer surface 508 and extends along a second central longitudinal axis 520 of the lens housing 502.

[0067] Refer to Figure 6, the cam 518 has a first end 604 and a second end 606. The second end 606 of the cam 518 is proximal to the second engagement portion 602 and distal to the sensor end 506 of the lens housing 502. In addition, the first end 604 of the cam 518 is proximal to the sensor end 506 and distal to the second engagement portion 602. In some examples, the first end 604 of the cam 518 has a semicircular profile. In some examples, the scope of the present disclosure is not limited to having the first end 604 of the cam 518 have a semicircular profile. In alternative embodiments, the first end 604 of the cam 518 may have any other profile without departing from the scope of the present disclosure. In an exemplary embodiment, the cam 518 may also have a second width along the vertical axis 524. In some examples, the width of the cam 518 along the vertical axis 524 is the same as the first width of the spiral ramp 402 (defined in the first lens channel 302 of the housing 202).

[0068] In some examples, Figure 5 and Figure 6 Only one cam 518 is shown. However, in alternative embodiments, first lens barrel 204 may have more than one cam without departing from the scope of the present disclosure.

[0069] In an exemplary embodiment, the outer surface 508 of the lens housing 502 may define a spiral rib 522 within the coupling portion 514 of the lens housing 502. In some examples, the spiral rib 522 protrudes from the outer surface 508 of the lens housing 502 and rotates around the periphery of the lens housing 502. In an exemplary embodiment, the outer surface 508 defines the spiral rib 522 such that the spiral rib 522 is angled at a second predetermined pitch. In some examples, the second predetermined pitch may correspond to the angle between the spiral rib 522 and the second transverse axis 526 of the first lens barrel 204. In an exemplary embodiment, the second predetermined pitch of the spiral rib 522 is the same as the first predetermined pitch of the spiral ramp 402 (defined in each of the first lens channel 302 and the second lens channel 304).

[0070] In some examples, the spiral rib 522 may intersect the cam 518 at one or more portions. For example, the spiral rib 522 may intersect the cam 518 at the second end 606 of the cam 518. Additionally, the spiral rib 522 may intersect the cam 518 at a third junction 608 between the cam 518 and the spiral rib 522. In an exemplary embodiment, the third junction 608 may be located between the first end 604 of the cam 518 and the second end 606 of the cam 518. In some examples, the scope of the present disclosure is not limited to the spiral rib 522 intersecting the cam 518. In alternative embodiments, the spiral rib 522 may not intersect the cam 518. In such a specific implementation, the spiral rib 522 may have a first end (not shown) and a second end (not shown). The first end of the spiral rib 522 may be located proximal to the second end 606 of the cam 518, while the second end of the spiral rib 522 may be located proximal to the center portion 616 of the cam 518. In some examples, the center portion of the cam 518 may correspond to a portion between the first end 604 and the second end 606 of the cam 518 .

[0071] In some examples, the spiral rib 522 has a first edge 610 and a second edge 612. The first edge 610 of the spiral rib 522 faces the sensor end 506 of the lens housing 502. Furthermore, the second edge 612 of the spiral rib 522 faces the second joint 602 between the coupling portion 514 of the lens housing 502 and the flange portion 512 of the lens housing 502. In some examples, the spiral rib 522 can have a third width, which can be defined as the distance between the first edge 610 of the spiral rib 522 and the second edge 612 of the spiral rib 522 measured along the second central longitudinal axis 520. Furthermore, the spiral rib 522 has a fourth width along the vertical axis 524. The fourth width of the spiral rib 522 can be the same as the second width of the cam 518.

[0072] In an alternative embodiment, the spiral rib 522 may not have the second edge 612. In such an embodiment, the spiral rib 522 may protrude from the outer surface 508 of the first lens barrel 204 such that the spiral rib 522 extends from the flange portion 512 to the first edge 610 of the spiral rib 522. To this end, when viewed from the sensor end 506 of the first lens barrel 204, the first edge 610 of the spiral rib 522 corresponds to the second step. Furthermore, in such an embodiment, the cam 518 may not have the second end 606. Referring again to FIG. Figure 3 and Figure 2To assemble the imaging unit 116, the first image sensor 209 and the second image sensor 211 are mounted at the sensor end 212 of the housing 202. In some examples, the first image sensor 209 is mounted at the sensor end 212 so that the first image sensor 209 is aligned with the first lens channel 302. Similarly, the second image sensor 211 is mounted at the sensor end 212 so that the second image sensor 211 is aligned with the second lens channel 304. Furthermore, in an exemplary embodiment, the first lens channel 302 and the second lens channel 304 are configured to receive the first lens barrel 204 and the second lens barrel 206, respectively. With the first lens barrel 204 received in the first lens channel 302, the first end 604 of the cam 518 slidably abuts the first step 406 (defined by the spiral ramp 402) in the first lens channel 302 of the first lens barrel 204. In some examples, the cam 518 and the first step 406 (defined in the first lens channel 302) prevent the first lens barrel 204 from traveling into the first lens channel 302 toward the first image sensor 209. Similarly, the cam 518 and the first step 406 (defined in the second lens channel 304) defined on the second lens barrel 206 prevent the second lens barrel 206 from traveling into the second lens channel 304 toward the second image sensor 211. Furthermore, when the cam 518 abuts the first step 406, the first edge 612 of the spiral rib 522 is positioned at a second predetermined distance from the first step 406.

[0073] In some examples, (during assembly of the imaging unit 116) the first lens barrel 204 can be rotated within the first lens channel 302 while the first end 604 of the cam abuts the first step 406 to adjust the focus of the first lens barrel 204. In an exemplary embodiment, the first step 406 (defined by the spiral ramp 402) can provide a track (via the first step 406) for rotating the first lens barrel 204. For example, the first end 604 of the cam 518 can slide on the first step 406 (defining the track) to facilitate rotation of the first lens barrel 204 within the first lens channel 302. Because the first step 406 has a first predetermined pitch relative to the first transverse axis 403, the sliding cam 518 (defined on the first lens barrel 204) moves the first lens barrel 204 along the first central longitudinal axis 404 of the first lens channel 302. As a result, the position of the first lens barrel 204 within the first lens channel 302 is modified. Modifying the position of the first lens barrel 204 modifies the focus of the first lens barrel 204. In some examples, the focus of first lens barrel 204 may be modified to ensure that first lens barrel 204 focuses light on first image sensor 209 (aligned with first lens channel 302 ).

[0074] In some examples, rotation of the first lens barrel 204 within the first lens channel 302 is limited by a stop section defined by a first end (not shown) and a second end (not shown) of the helical ramp 402. For example, the first lens barrel 204 may rotate in a clockwise direction within the first lens channel 302 until a cam 518 on the first lens barrel 204 abuts the stop section (defined by the first end and the second end of the helical ramp 402). The stop section prevents further rotation of the first lens barrel 204 in the clockwise direction. In some examples, the first lens barrel 204 may then rotate in a counterclockwise direction.

[0075] Further, in the case where the first lens barrel 204 is received within the first lens channel 302 and a first end 604 of the cam 518 abuts the helical ramp 402, a portion of the helical rib 522 (defined on the first lens barrel 204) extends from a second edge surface 314 of the one or more edge surfaces defining the first cementing pit 306, as Figure 7 further shown. In some examples, in order for a portion of the helical rib 522 to extend from the second edge surface 314, a first predetermined distance between the first edge surface 312 and the second edge surface 314 may be greater than a second predetermined distance between a first edge 612 of the helical rib 522 and a step 408.

[0076] Figure 7 A top view 700 of an imaging unit 116 in accordance with one or more embodiments described herein is shown. Referring Figure 7 , a portion 702 of the helical rib 522 extends from a second edge surface 314 of the one or more edge surfaces defining the perimeter of the first cementing pit 306. In some examples, a portion 702 of the helical rib 522 includes a first edge 612 of the helical rib 522. In another example, a portion 702 of the helical rib 522 may exclude a second edge 614 of the helical rib 522. Since a second predetermined pitch of the helical rib 522 is the same as a first predetermined pitch of the helical ramp 402, the helical rib 522 is parallel to the helical ramp 402 ( Figure 74. Furthermore, because first edge surface 312 of the one or more edge surfaces (defining the perimeter of first glue pocket 306) is parallel to portion 408 of spiral ramp 402, first edge surface 312 (defining the perimeter of first glue pocket 306) is parallel to spiral rib 522. Consequently, a third predetermined distance (shown by 704) between first edge 612 of spiral rib 522 and first edge surface 312 (defining the perimeter of first glue pocket 306) remains constant regardless of the position of first lens barrel 204 in first lens channel 302. For example, when the position of first lens barrel 204 is changed (by rotating first lens barrel 204 in first lens channel 302), third predetermined distance 704 between first edge 612 of spiral rib 522 and first edge surface 312 (defining the perimeter of first glue pocket 306) remains constant.

[0077] Once the position of first lens barrel 206 is set within first lens channel 302, adhesive can be placed within first gluing recess 306 and second gluing recess 305 of first lens channel 302. Because the distance between first edge 612 of spiral rib 522 and first edge surface 312 (defining the perimeter of first gluing recess 306) remains constant, the adhesive is evenly placed between first edge 612 of spiral rib 522 and first edge surface 312 (defining the perimeter of first gluing recess 306). As discussed, in some examples, because a portion of spiral ramp 402 is parallel to first edge surface 312 (defining the perimeter of first gluing recess 306), the adhesive is evenly placed between first edge 612 of spiral rib 522 and spiral ramp 402. Therefore, as the adhesive cures, the adhesive contracts, causing first edge 612 of spiral rib 522 to be pulled toward spiral ramp 402. To this end, first end 604 of cam 518 is in close contact with spiral ramp 402.

[0078] Furthermore, because the distance between the first edge 612 of the spiral rib 522 and the first edge surface 312 (defining the perimeter of the first glue pocket 306) remains constant, the amount of adhesive to be applied during the manufacture of various imaging units also remains constant. Consequently, variations caused by the curing of the glue (e.g., movement of the lens barrel within the lens channel due to the curing of the glue) remain consistent during the manufacture of various imaging units. Consequently, any anticipated changes in the focus of the lens barrel can be compensated for before the glue cures.

[0079] In some example embodiments, some of the operations described herein may be modified or further amplified as described below. Furthermore, in some embodiments, additional optional operations may also be included. It should be understood that each of the modifications, optional additions, or amplifications described herein may be included in the operations herein, alone or in combination with any other features described herein.

[0080] The foregoing method descriptions and process flow charts are provided as illustrative examples only and are not intended to require or imply that the steps of the various embodiments must be performed in the order presented. As will be understood by those skilled in the art, the order of steps in the above-described embodiments can be performed in any order. Words such as "after," "then," "next," etc. are not intended to limit the order of the steps; these words are simply used to guide the reader through the description of the method. In addition, for example, any reference to a claim element in the singular using the articles "a," "an," or "the" should not be construed as limiting the element to the singular.

[0081] Many modifications and other embodiments of the invention set forth herein will occur to one skilled in the art to which the invention pertains having the benefit of the teachings presented in the foregoing description and associated drawings. Although the drawings show only certain components of the apparatus and systems described herein, it will be understood that various other components may be used in conjunction with the image capture device. Accordingly, it will be understood that the invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included within the scope of the appended claims. Furthermore, the steps in the above-described method may not necessarily occur in the order depicted in the drawings, and in some cases, one or more of the depicted steps may occur substantially simultaneously, or may involve additional steps. Although specific terms are employed herein, they are used in a general and descriptive sense only and not for purposes of limitation.

Claims

1. An image capturing device, the image capturing device comprising: An imaging unit, the imaging unit at least comprising: A lens barrel, the lens barrel being received in a lens passage defined by an inner surface of a housing of the imaging unit, the lens barrel including an outer surface that defines: A cam, the cam protruding from the outer surface of the lens barrel, wherein the cam abuts a helical step, the helical step being defined by the inner surface and protruding outward from the inner surface into the lens passage, and A helical rib, the helical rib protruding from the outer surface of the lens barrel, Wherein the cam has a first end and a second end, wherein the first end of the cam abuts the helical step, and wherein the helical rib intersects the cam at the second end of the cam.

2. The image capturing device according to claim 1, wherein, The helical step is angled at a first predetermined pitch, and wherein the helical rib is angled at a second predetermined pitch, wherein the first predetermined pitch of the helical step corresponds to the second predetermined pitch of the helical rib.

3. The image capturing device according to claim 1, wherein, The inner surface further defines: A gluing pit, the gluing pit being located in the lens passage, the gluing pit extending from the inner surface to the outer surface such that a first edge surface defining a part of a perimeter of the gluing pit is parallel to a part of the helical step.

4. The image capturing device according to claim 3, wherein, The housing further includes a second edge surface, a third edge surface, and a fourth edge surface, wherein the first edge surface, the second edge surface, the third edge surface, and the fourth edge surface define the perimeter of the gluing pit, and wherein the second edge surface is parallel to the first edge surface.

5. The image capturing device according to claim 4, wherein, A part of the helical rib extends out from the second edge surface, the second edge surface defining the part of the perimeter of the gluing pit.

6. The image capturing device according to claim 4, wherein, When the cam slides on the helical step to adjust the position of the lens barrel in the lens passage, the distance between the first edge surface of the gluing pit and an edge of the helical rib remains constant.

7. The image capturing device according to claim 4, wherein, When the cam slides on the helical step to adjust the position of the lens barrel in the lens passage, the distance between the second edge surface of the gluing pit and an edge of the helical rib remains constant.

8. The image capturing device according to claim 7, wherein, Glue is disposed between the edge of the helical rib and the first edge surface, the first edge surface defining the perimeter of the gluing pit.

9. The image capturing device according to claim 3, wherein, The first edge surface of the gluing pit, the helical rib, and the helical step are parallel to each other.

10. The image capturing device according to claim 1, wherein, The housing includes a scanning window end portion and a sensor end portion, the sensor end portion being spaced apart from the scanning window end portion along a transverse axis perpendicular to a longitudinal axis of the housing.

11. A housing of an imaging unit, the housing comprising: An inner surface, wherein the inner surface defines a lens passage sized to receive a lens barrel, and wherein the inner surface defines a helical step that protrudes outward into the lens passage; Glueing pit, the glueing pit is located in the lens channel, the glueing pit extends from the inner surface of the housing to the outer surface of the housing, such that a first edge surface defining a part of the perimeter of the glueing pit is parallel to a part of the helical step in the lens channel. Wherein, in the case where the lens barrel is received in the lens channel, the helical step is configured to slidably abut a cam defined on the outer surface of the lens barrel, and Wherein, the cam has a first end and a second end, wherein, the first end of the cam abuts the helical step, and wherein, a helical rib protruding from the outer surface of the lens barrel intersects the cam at the second end of the cam.

12. The housing according to claim 11, wherein, In the case where the lens barrel is received in the lens channel, a part of the helical rib defined on the lens barrel extends out from the second edge surface of the glueing pit.

13. The housing according to claim 12, wherein, When adjusting the position of the lens barrel in the lens channel by sliding the lens barrel on the helical step, the distance between the first edge surface defining a part of the perimeter of the glueing pit and the edge of the helical rib remains constant.

14. The housing according to claim 12, wherein, The helical rib on the lens barrel is angled at a second predetermined pitch, and wherein, the second predetermined pitch corresponds to a first predetermined pitch of the helical step.

15. The housing according to claim 14, wherein, The housing includes a scanning window end portion and a sensor end portion, the sensor end portion is spaced apart from the scanning window end portion along the transverse axis of the housing.

16. The housing according to claim 15, further comprising An image sensor, the image sensor is disposed at the sensor end portion of the housing; and A scanning window, the scanning window is disposed at the scanning window end portion of the housing.

17. The housing according to claim 11, wherein, The housing further includes a second edge surface, a third edge surface and a fourth edge surface, wherein, the first edge surface, the second edge surface, the third edge surface and the fourth edge surface define the perimeter of the glueing pit, and wherein, the second edge surface is parallel to the first edge surface.

Images