Aperture module and camera module

Abstract

This disclosure relates to an aperture module. The aperture module includes a base with a central opening, a rotator configured to rotate relative to the base, and an aperture driver disposed between the base and the rotator. The rotator includes a lower surface portion disposed facing the base and having a hollow portion, a side surface portion bent upward from the inner edge of the lower surface portion, and an upper surface portion extending inward from the upper end of the side surface portion and having a hollow portion. This disclosure also relates to a camera module.

Description

Technical Field

[0001] This disclosure relates to aperture modules and camera modules. Background Technology

[0002] With the rapid development of information and communication technology and semiconductor technology, electronic devices tend to integrate multiple functions and provide integrated functions that go beyond their traditional roles.

[0003] Cameras have become a standard feature in portable electronic devices such as smartphones, tablet PCs, and laptops, and their resolution and performance are constantly improving.

[0004] Large aperture lenses (low f-number lenses) are crucial for improving camera optical performance, and play a particularly important role in enhancing image quality in low-light conditions. However, large aperture lenses actually reduce optical performance because they have a shallow depth of field and a narrow focal length range. Therefore, a similar aperture structure is needed that allows for appropriate adjustment of brightness and depth of field by adjusting the lens aperture size.

[0005] However, the problem with assembling the aperture on the upper surface of the lens is that the outer diameter of the upper part of the lens-aperture structure increases due to its structural characteristics. This increases the outer diameter and height of the entire camera module, resulting in design interference with the portable electronic device on which the camera module is mounted.

[0006] The above information is presented as background information and is intended to aid in understanding this disclosure. No determination or assertion is made as to whether any of the above content can be used as prior art with respect to this disclosure. Summary of the Invention

[0007] The summary portion of this invention is intended to provide a brief overview of the chosen concepts, which will be further described in the detailed description portion below. This summary portion is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0008] In one general aspect, the aperture module includes a base having a central opening, a rotator configured to rotate relative to the base, and an aperture driver disposed between the base and the rotator. The rotator includes a lower surface portion disposed facing the base and having a hollow portion, a side surface portion bent upward from the inner edge of the lower surface portion, and an upper surface portion extending inward from the upper end of the side surface portion and having a hollow portion.

[0009] An aperture driver may include an aperture magnet disposed on either the upper surface of the base or the lower surface portion of the rotator, and an aperture coil disposed on the other.

[0010] The aperture module may also include a rolling member (i.e., a second rolling member) disposed between the upper surface of the base and the lower surface portion of the rotator.

[0011] The aperture module may also include a guide portion disposed on the base and configured to guide the rolling motion of the rolling member, and a first rolling portion disposed on the lower surface portion and corresponding to the guide portion.

[0012] The aperture module may also include aperture blades disposed on the upper surface portion of the rotator, and an aperture cover disposed above the aperture blades and configured to cover the rotator.

[0013] Either or both of the rotator and aperture cover may be made of stainless steel (SUS).

[0014] The side surface portion of the rotator may include a first side surface portion connected to the lower surface portion and a second side surface portion connected to the upper surface portion.

[0015] Either or both of the first side surface portion and the second side surface portion may include an inclined surface having a smaller diameter in the upward direction.

[0016] In another general aspect, the camera module includes a housing with an internal space, a lens barrel housed within the internal space of the housing and including a plurality of lenses, and an aperture module disposed adjacent to the lens barrel and configured to adjust the size of the entrance aperture. The aperture module includes a base located on a first surface of the lens barrel and having a central opening, a rotator configured to rotate relative to the base, and an aperture driver disposed between the base and the rotator. The rotator includes a lower surface portion disposed facing the base and having a hollow portion, a side surface portion bending upward from the inner edge of the lower surface portion and surrounding the upper portion of the outer surface of the lens barrel, and an upper surface portion extending inward from the upper end of the side surface portion and having a hollow portion.

[0017] An aperture driver may include an aperture magnet disposed on either the upper surface of the base or the lower surface portion of the rotator, and an aperture coil disposed on the other.

[0018] The camera module may also include a rolling member disposed between the upper surface of the base and the lower surface portion of the rotator.

[0019] The camera module may also include a first rolling portion disposed on the lower surface portion and in contact with the rolling member, a guide portion disposed on the base and configured to guide the rolling motion of the rolling member, and a second rolling portion disposed on the first surface of the lens barrel and in contact with the rolling member.

[0020] The camera module may also include aperture blades disposed on the upper surface portion of the rotator, and an aperture cover disposed above the aperture blades and configured to cover the rotator.

[0021] Either or both of the rotator and aperture cover may be made of stainless steel (SUS).

[0022] The side surface portion of the rotator may include a first side surface portion connected to the lower surface portion and a second side surface portion connected to the upper surface portion.

[0023] Either or both of the first side surface portion and the second side surface portion may include an inclined surface having a smaller diameter in the upward direction.

[0024] The aperture driver can be positioned below the upper surface of the lens barrel.

[0025] Other features and aspects will become apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a perspective view showing the appearance of the camera module according to an embodiment.

[0027] Figure 2 This is a schematic exploded perspective view of a camera module according to an embodiment.

[0028] Figure 3 This is an exploded perspective view showing the aperture module according to an embodiment.

[0029] Figure 4 It is shown Figure 3 The image shows a 3D view of the aperture module's rotator.

[0030] Figure 5 It is shown Figure 3 The image shows a cross-sectional view of the rotator of the aperture module.

[0031] Figure 6 It is based on Figure 1 The image shows a cross-sectional view of the camera module in the first direction.

[0032] Figure 7 It is based on Figure 1 The image shows a cross-sectional view of the camera module from another direction.

[0033] Figure 8A and Figure 8B The figures show the dimensions of the camera module according to the comparative example and the dimensions of the camera module according to the embodiment, respectively.

[0034] Throughout the accompanying drawings and detailed embodiments, unless otherwise described, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative dimensions, scale, and depiction of elements in the drawings may be exaggerated. Detailed Implementation

[0035] In the following description, although examples of this disclosure will be described in detail with reference to the accompanying drawings, it should be noted that the examples are not limited thereto.

[0036] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, except for operations that must occur in a specific order, as will become apparent upon understanding this disclosure. Furthermore, for clarity and brevity, descriptions of features well-known in the art may be omitted.

[0037] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways in which the methods, apparatuses, and / or systems described herein will become apparent upon understanding this disclosure.

[0038] Throughout this specification, when an element such as a layer, region, or substrate is described as being "on," "connected to," or "attached to" another element, the element may be directly "on," directly "connected to," or directly "attached to" the other element, or there may be one or more other elements between the element and the other element. Conversely, when an element is described as being "directly on," "directly connected to," or "directly attached to" another element, there are no other elements between the element and the other element.

[0039] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more items; similarly, “at least one” includes any one of the associated listed items and any combination of any two or more items.

[0040] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited by these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, first part, first region, first layer, or first section mentioned in these examples may also be referred to as a second component, second part, second region, second layer, or second section.

[0041] Spatial relative terms such as “above,” “above,” “below,” and “under” may be used herein for descriptive convenience to describe the relationship of one element relative to another, as shown in the accompanying drawings. In addition to covering the orientation depicted in the drawings, these spatial relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “above” another element would be located “below” or “under” that other element. Thus, depending on the spatial orientation of the device, the term “above” covers both orientations of “above” and “below”. The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0042] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the terms “a,” “an,” and “the” are intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0043] Due to manufacturing techniques and / or tolerances, the shapes shown in the accompanying drawings may vary. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include shape variations that occur during manufacturing.

[0044] It should be noted that in this document, the term "may" is used relative to examples, such as regarding what an example may include or implement, meaning that there exists at least one example that includes or implements such a feature, but not all examples are limited to this.

[0045] The features of the examples described herein can be combined in various ways that will become apparent upon understanding this disclosure. Furthermore, although the examples described herein have multiple configurations, other configurations that will become apparent upon understanding this disclosure are also possible.

[0046] Figure 1 This is a perspective view showing the appearance of the camera module according to an embodiment. Figure 2 This is a schematic exploded perspective view of a camera module according to an embodiment.

[0047] refer to Figure 1 and Figure 2 According to the embodiment, the camera module 10 may include a housing 100, a lens barrel 200, a lens drive module 300, an aperture module 400, and a cover 500.

[0048] The housing 100 may include a housing body 110 having an internal space and openings at both the top and bottom, and a circuit board 120 positioned to cover the side surfaces of the housing body 110. A lens barrel 200, a lens drive module 300, and an aperture module 400 may be housed within the internal space of the housing 100. An image sensor unit (not shown) that includes an image sensor that converts incident light into electrical signals may be disposed in the lower part of the housing 100.

[0049] The lens barrel 200 may have a hollow cylindrical shape so that multiple lenses for imaging an object can be housed within it. Multiple lenses may be mounted along the optical axis within the lens barrel 200. The multiple lenses may be arranged in a desired number according to the design of the lens barrel 200, and each lens may have the same or different optical properties (such as refractive index).

[0050] The lens drive module 300 may be a device configured to mount and move the lens barrel 200, and may include a focus adjustment section 310 for adjusting focus (e.g., autofocus (AF)), a shake corrector 320 for compensating for hand shakiness or shake (e.g., optical image stabilization (OIS)), and a rolling member 330.

[0051] The focus adjustment section 310 can adjust the focus or achieve zoom function by moving the lens barrel 200 along the optical axis direction Z.

[0052] The focus adjustment section 310 may include a focus support 311 that houses the lens barrel 200, and a focus driver 312 that generates a driving torque to move the lens barrel 200 and the focus support 311 along the optical axis direction Z. The focus driver 312 may include a focus drive magnet 312a mounted on the side surface of the focus support 311, and a focus drive coil 312b mounted on the side surface of the housing body 110 and connected to the circuit board 120. The focus drive coil 312b may be mounted in the housing body 110 to face the focus drive magnet 312a.

[0053] The shake corrector 320 can compensate for hand tremors or shaking during shooting by moving the lens barrel 200 in a first direction X or a second direction Y perpendicular to the optical axis Z.

[0054] The jitter corrector 320 may include a correction support 321 that guides the movement of the lens barrel 200, and a correction driver 322 that generates a driving torque to move the correction support 321 in a first direction X or a second direction Y perpendicular to the optical axis direction Z.

[0055] The correction support 321 can be housed within the focusing support 311 and aligned along the optical axis Z, and can guide the movement of the lens barrel 200. The correction support 321 may have a central opening into which the lens barrel 200 can be inserted.

[0056] The calibration driver 322 may include a first calibration driver 31 and a second calibration driver 32. The first calibration driver 31 includes a first calibration drive magnet 31a and a first calibration drive coil 31b, and the second calibration driver 32 includes a second calibration drive magnet 32a and a second calibration drive coil 32b. The first calibration drive magnet 31a and the second calibration drive magnet 32a may be mounted on the calibration support 321, and the first calibration drive coil 31b and the second calibration drive coil 32b, respectively facing the first calibration drive magnet 31a and the second calibration drive magnet 32a, may be fixedly mounted on the housing body 110 via a circuit board 120. The first calibration driver 31 can generate a driving torque in a first direction X perpendicular to the optical axis direction Z, and the second calibration driver 32 can generate a driving torque in a second direction Y perpendicular to both the optical axis direction Z and the first direction X.

[0057] The rolling member 330 may be spherical and may be installed between the focusing support 311 and the housing 100 to reduce friction between the focusing support 311 and the housing 100 when the focusing support 311 moves along the optical axis direction Z. Furthermore, the rolling member 330 may be installed between the focusing support 311 and the correction support 321 to reduce friction between the correction support 321 and the focusing support 311.

[0058] The cover 500 can be attached to the housing 100 to surround the outer surface of the housing 100. The cover 500 can protect the lens barrel 200, lens drive module 300 and aperture module 400 located in the internal space of the housing 100 from external physical impacts or shield electromagnetic waves.

[0059] The aperture module 400 can be disposed adjacent to the lens barrel 200 and can selectively change the amount of light incident on the lens barrel 200 by adjusting the size of the entrance aperture. The aperture module 400 can be disposed above the lens drive module 300 and can be located in front of the lens drive module 300 based on the light incident direction. The aperture module 400 can be coupled to the lens drive module 300, thereby moving together with the lens drive module 300 in the optical axis direction Z, the first direction X, and the second direction Y. The aperture module 400 can allow a relatively small amount of light to enter the lens barrel 200 in high-light environments and a relatively large amount of light to enter the lens barrel 200 in low-light environments, so as to maintain image quality consistently under various lighting conditions.

[0060] Figure 3 This is an exploded perspective view showing the aperture module according to an embodiment. Figure 4 It is shown Figure 3 The image shows a 3D view of the aperture module's rotator. Figure 5 It is shown Figure 3 The image shows a cross-sectional view of the rotator of the aperture module. Figure 6 It is based on Figure 1 The image shows a cross-sectional view of the camera module in the first direction. Figure 7 It is based on Figure 1 The image shows a cross-sectional view of the camera module from another direction.

[0061] refer to Figures 3 to 7 According to the embodiment, the aperture module 400 may include a base 410, a rotator 430, an aperture driver 440, an aperture blade 450, a gap spacer 460, and an aperture cover 470.

[0062] The base 410 can be disposed on the first surface of the lens barrel 200 and can be formed of a generally annular circular plate having an opening 411 at its center. The aperture driver 440, rotator 430, aperture blades 450, gap spacer 460, and aperture cap 470 can be sequentially stacked above the base 410 in the optical axis direction Z. The base 410 can be coupled to the aperture cap 470 and protect the aperture blades 450 and gap spacer 460 disposed therein from external influences.

[0063] The base 410 may be a circuit board that powers the aperture driver 440, and may be a circuit board with a wiring pattern, such as a flexible circuit board or a rigid-flex circuit board. The base 410 may include a connection portion 415 that connects to the circuit board 120.

[0064] A guide portion 417 can be formed on the base 410 to accommodate the rotation of the second rolling member 445 that guides the rotation of the rotator 430. The guide portion 417 can be formed as a plurality of approximately curved through holes along the circumferential direction and can guide the rolling motion of the second rolling member 445.

[0065] Rotator 430 can be rotated relative to base 410 by electromagnetic action generated by aperture driver 440. Aperture blade 450 can be rotated by the rotation of rotary 430, and therefore, the size of the entrance aperture can be adjusted.

[0066] The rotator 430 may include a lower surface portion 431 disposed facing the base 410, a side surface portion 432 extending upward from the lower surface portion 431, and an upper surface portion 433 extending inward from the side surface portion 432.

[0067] The lower surface portion 431 may be formed of a generally annular disk having a hollow portion 431a. The side surface portion 432 may be formed to bend upward from the inner edge of the lower surface portion 431. The upper surface portion 433 may be a generally annular circular plate having a hollow portion 433a, and may extend inward from the upper end of the side surface portion 432.

[0068] A first rolling portion 437 that contacts the second rolling member 445 may be formed on the lower surface portion 431. The first rolling portion 437 may be formed to correspond to the guide portion 417 and may include an upwardly projecting rolling surface to receive a portion of the second rolling member 445. The first rolling portion 437 may have a cross-section that is, for example, shaped like a mountain (∧) in the optical axis direction Z, and may include a pair of rolling surfaces facing each other at a predetermined angle.

[0069] The side surface portion 432 may include a first side surface portion 432a connected to the lower surface portion 431 and a second side surface portion 432b connected to the upper surface portion 433. At least one of the first side surface portion 432a and the second side surface portion 432b may be formed by an inclined surface having a smaller diameter in the upward direction. For example, the first side surface portion 432a may be formed as an inclined surface, while the second side surface portion 432b may be formed as a surface perpendicular to the upper surface portion 433. Alternatively, both the first side surface portion 432a and the second side surface portion 432b may be formed as inclined surfaces, in which case the inclination angle of the first side surface portion 432a relative to the lower surface portion 431 may be smaller than the inclination angle formed by the second side surface portion 432b relative to the lower surface portion 431.

[0070] Rotator 430 can be made of stainless steel (SUS) to minimize thickness and increase strength. However, for parts that are difficult to machine with stainless steel, plastic polymer materials such as polycarbonate (PC) can be used.

[0071] The aperture driver 440 can be disposed between the base 410 and the rotator 430, and can include an aperture magnet 441 and an aperture coil 442. The aperture driver 440 can be disposed below the upper surface of the lens barrel 200.

[0072] The aperture magnet 441 and the aperture coil 442 can be arranged facing each other on the upper surface of the base 410 and the lower surface portion 431 of the rotator 430. That is, the aperture magnet 441 can be disposed on one of the upper surface of the base 410 and the lower surface portion 431 of the rotator 430, and the aperture coil 442 can be disposed on the other. For example, the aperture magnet 441 can be disposed on the lower surface of the lower surface portion 431 of the rotator 430, and the aperture coil 442 can be disposed on the upper surface of the base 410. In this case, in order to power the aperture coil 442, a connecting member (not shown) can be used to electrically connect the base 410 and the circuit board 120, or the base 410 can extend to the upper end of the circuit board 120 to be directly connected to the circuit board 120.

[0073] When power is supplied to the aperture coil 442, the rotator 430, on which the aperture magnet 441 is mounted, reciprocates in a direction perpendicular to the optical axis Z through the electromagnetic interaction between the aperture magnet 441 and the aperture coil 442. The rotator 430 can rotate due to its own shape, and therefore, the size of the entrance aperture of the aperture module 400 can be adjusted.

[0074] The second rolling member 445 can be disposed between the upper surface of the base 410 and the lower surface portion 431 of the rotator 430 to guide the rotational movement of the rotator 430. That is, when the rotator 430 rotates, the second rolling member 445 can reduce the friction between the lower surface portion 431 of the rotator 430 and the base 410 or the lens barrel 200.

[0075] To accommodate and guide the rolling motion of the second rolling member 445, a guide portion 417 may be formed in the base 410, a first rolling portion 437 may be formed in the lower surface portion 431 of the rotator 430, and a second rolling portion 207 may be formed in the first surface of the lens barrel 200. The guide portion 417 may be in the form of a generally annular circular hole penetrating the base 410 in the thickness direction, and the first rolling portion 437 and the second rolling portion 207 may include rolling surfaces that contact the second rolling member 445. The first rolling portion 437 may include a convex rolling surface to accommodate the upper portion of the second rolling member 445, and the second rolling portion 207 may include a concave rolling surface to accommodate the lower portion of the second rolling member 445. For example, the first rolling portion 437 may have a cross-section approximately shaped like a mountain (∧) in the optical axis direction Z, and the second rolling portion 207 may have a cross-section approximately shaped like the letter "∨" in the optical axis direction Z.

[0076] The second rolling member 445 may be formed as a sphere, and a plurality of such spheres may be disposed between the first rolling portion 437 and the second rolling portion 207, arranged in a circumferential direction, and simultaneously housed in the guide portion 417.

[0077] The second rolling member 445 can reduce the friction between the base 410 and the rotator 430 and facilitate the rotational movement of the rotator 430. Furthermore, the second rolling member 445 can maintain a constant gap between the base 410 and the rotator 430 so that the aperture magnet 441 and the aperture coil 442 do not come into contact with each other when the rotator 430 rotates. For this purpose, the diameter of the second rolling member 445 can be formed to be larger than the thickness of the aperture magnet 441 and the aperture coil 442.

[0078] Multiple aperture blades 450 can be provided, and the guide slit 451 of each aperture blade 450 can be connected to multiple guide protrusions 435 formed at fixed intervals on the upper surface portion 433 of the rotator 430. The guide slit 451 is a through hole extending in a curved shape, and can guide the rotation of the aperture blades 450 when the rotator 430 rotates. Fixing protrusions (not shown) for fixing the aperture blades 450 can be formed on the upper surface portion 433 of the rotator 430, and the fixing groove 452 of each aperture blade 450 can be connected to the fixing protrusion.

[0079] When the rotator 430 rotates via the electromagnetic interaction between the aperture magnet 441 and the aperture coil 442, a plurality of guide protrusions 435 formed on the upper surface portion 433 of the rotator 430 can move within the guide slit 451 of each aperture blade 450 while the aperture blade 450 rotates around a fixed protrusion. The aperture blade 450 can rotate within a certain range to open and close the hollow portion 433a of the upper surface portion 433 of the rotator 430, thereby adjusting the size of the entrance aperture.

[0080] The spacer 460 can be disposed adjacent to the aperture blades 450 and can adjust the maximum size of the entrance aperture. The spacer 460 can have a through-hole PH, the size of which is smaller than the size of the maximum entrance aperture formed by the aperture blades 450 and larger than the size of the intermediate-sized entrance aperture. The through-hole PH of the spacer 460 can be aligned with the entrance aperture formed by the aperture blades 450 in the optical axis direction Z.

[0081] The maximum entrance aperture achieved by the aperture module 400 in this embodiment can be the size of the through-hole PH of the spacer 460. To address situations where the shape of the entrance aperture cannot maintain the expected shape due to tolerances, the entrance aperture can be set to its maximum size using the spacer 460. Although the spacer 460 has been shown and described as being positioned above the aperture blades 450 in this embodiment, this disclosure is not limited thereto, and the spacer 460 can also be positioned below the aperture blades 450.

[0082] The aperture cover 470 can be located above the aperture blades 450 and can cover the rotator 430. A gap spacer 460 can be disposed between the aperture cover 470 and the aperture blades 450, and the aperture cover 470 can engage with the base 410.

[0083] The aperture cover 470 can be made of stainless steel (SUS) to minimize thickness and increase strength. However, for parts that are difficult to machine with stainless steel, plastic polymer materials such as polycarbonate (PC) can be used.

[0084] In the following text, see references Figure 8A and Figure 8B The dimensions of the camera module according to the comparative examples and embodiments will be described in detail. Figure 8A and Figure 8B The figures show the dimensions of the camera module according to the comparative example and the dimensions of the camera module according to the embodiment, respectively.

[0085] like Figure 8AAs shown, based on the camera module according to the comparative example, since the outer diameter D1 of the aperture module is large and the height H1 of the upper surface portion of the lens is high, interference may occur with the decorative part P1 of the portable electronic device on which the camera module is mounted when the camera module is assembled.

[0086] On the other hand, such as Figure 8B As shown, it can be seen that, based on the camera module according to the embodiment, since the outer diameter D2 of the aperture module is much smaller than the outer diameter D1 of the aperture module of the comparative example, and the height H2 of the upper surface portion of the lens is lower than the height H1 of the upper surface portion of the lens of the comparative example, there can be an edge space relative to the decorative portion P1 when assembling the camera module, and interference with the decorative portion P1 can be avoided.

[0087] Thus, according to this embodiment, the thickness of the aperture module can be minimized, thereby minimizing and thinning the outer diameter of the lens-aperture assembly, thereby improving the ease of assembly of the camera module.

[0088] Based on the aperture module according to the embodiment and the camera module including the aperture module, the aperture module can be miniaturized and made thinner so as to improve optical performance without causing design interference with the portable electronic device on which the camera module is mounted.

[0089] While specific examples have been shown and described above, it will be apparent upon understanding this disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be understood in a descriptive sense only and not for limiting purposes. The description of features or aspects in each example should be considered applicable to similar features or aspects in other examples. Suitable results may still be achieved if the described techniques are performed in a different order, and / or if components in the described system, architecture, device, or circuit are combined in different ways and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure is not limited by the specific embodiments but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in this disclosure.

Claims

1. Aperture module, including: The base has a central opening; A rotator configured to rotate relative to the base; as well as An aperture driver is disposed between the base and the rotator. The rotator includes: The lower surface portion is configured to face the base and has a hollow portion; The side surface portion bends upward from the inner edge of the lower surface portion; and The upper surface portion extends inward from the upper end of the side surface portion and has a hollow portion and a guide protrusion.

2. The aperture module according to claim 1, wherein, The aperture driver includes: An aperture magnet is disposed on either the upper surface of the base or the lower surface portion of the rotator; and An aperture coil is disposed on the other of the upper surface of the base or the lower surface portion of the rotator.

3. The aperture module according to claim 1, further comprising: A rolling member is disposed between the upper surface of the base and the lower surface portion of the rotator.

4. The aperture module according to claim 3, further comprising: A guide portion is disposed on the base and configured to guide the rolling motion of the rolling member; as well as A first rolling portion is disposed on the lower surface portion and corresponds to the guide portion.

5. The aperture module according to claim 1, further comprising: Aperture blades are disposed on the upper surface portion of the rotator; as well as An aperture cover is disposed above the aperture blades and configured to cover the rotator.

6. The aperture module according to claim 5, wherein, Either or both of the rotator and the aperture cover are made of stainless steel.

7. The aperture module according to claim 1, wherein, The side surface portion of the rotator includes a first side surface portion connected to the lower surface portion and a second side surface portion connected to the upper surface portion.

8. The aperture module according to claim 7, wherein, Either or both of the first side surface portion and the second side surface portion include an inclined surface having a smaller diameter in the upward direction.

9. Camera module, including: The shell has an internal space; A lens barrel, housed within the internal space of the housing, and comprising a plurality of lenses; as well as An aperture module, disposed adjacent to the lens barrel and configured to adjust the size of the entrance aperture, the aperture module includes: The base is located on the first surface of the lens barrel and has a central opening; A rotator configured to rotate relative to the base; and An aperture driver is disposed between the base and the rotator. The rotator includes: The lower surface portion is configured to face the base and has a hollow portion; The side surface portion bends upward from the inner edge of the lower surface portion and surrounds the upper part of the outer surface of the lens barrel; and The upper surface portion extends inward from the upper end of the side surface portion and has a hollow portion and a guide protrusion.

10. The camera module according to claim 9, wherein, The aperture driver includes: An aperture magnet is disposed on either the upper surface of the base or the lower surface portion of the rotator, and An aperture coil is disposed on the other of the upper surface of the base or the lower surface portion of the rotator.

11. The camera module according to claim 9, further comprising: A rolling member is disposed between the upper surface of the base and the lower surface portion of the rotator.

12. The camera module according to claim 11, further comprising: A first rolling portion is disposed on the lower surface portion and in contact with the rolling member; A guide portion is disposed on the base and configured to guide the rolling motion of the rolling member; as well as The second rolling portion is disposed on the first surface of the lens barrel and contacts the rolling member.

13. The camera module according to claim 9, further comprising: Aperture blades are disposed on the upper surface portion of the rotator; as well as An aperture cover is disposed above the aperture blades and configured to cover the rotator.

14. The camera module according to claim 13, wherein, Either or both of the rotator and the aperture cover are made of stainless steel.

15. The camera module according to claim 9, wherein, The side surface portion of the rotator includes a first side surface portion connected to the lower surface portion and a second side surface portion connected to the upper surface portion.

16. The camera module according to claim 15, wherein, Either or both of the first side surface portion and the second side surface portion include an inclined surface having a smaller diameter in the upward direction.

17. The camera module according to claim 9, wherein, The aperture driver is located below the upper surface of the lens barrel.

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