Camera device

Abstract

An embodiment discloses a camera device including: a plurality of lenses arranged in order from an object side to an image side along an optical axis; and a lens barrel in which the plurality of lenses are accommodated and formed with an entrance hole at an upper surface of the lens barrel, wherein the lens barrel includes the plurality of lenses. A head is provided on an area corresponding to a lens closest to the object side among the plurality of lenses, and in a direction perpendicular to the optical axis, a length of an upper portion of the head is less than a length of a lower portion of the head.

Description

Technical Field

[0001] The embodiments relate to a camera device with improved optical performance, and can be implemented in a compact size. Background Technology

[0002] Camera devices capture images of objects and store them as images or videos, and are installed in various electronic devices. In particular, camera devices are manufactured in very small sizes, and are used not only in portable devices such as smartphones, tablets, and laptops, but also in drones and vehicles to provide a variety of functions. For example, a camera device may include an imaging lens for forming an image and an image sensor for converting the formed image into an electrical signal. In this case, the camera device can perform autofocus (AF) by automatically adjusting the distance between the image sensor and the imaging lens to align the lens focal length, and can perform zoom functions by increasing or decreasing the magnification of a distant object via a zoom lens. Furthermore, the camera device employs image stabilization (IS) technology to correct or prevent image instability caused by unstable mounting or camera movement due to user movement.

[0003] The most important element for acquiring images in such a camera device is the image-forming lens. Recently, there has been a growing interest in high resolution, and research is underway using five or six lenses to achieve this goal. For example, research is being conducted on using multiple image-forming lenses with positive (+) and / or negative (-) diopters to achieve high resolution. However, when multiple lenses are included, it is difficult to obtain excellent optical and aberration characteristics. Recently, camera devices have been applied to various electronic devices. For example, research is underway on incorporating camera devices within displays, touchpads, etc., and products using camera technology have been continuously released. However, considering the optical characteristics of multiple lenses and the reliability of the lens barrel housing multiple lenses, it is difficult to achieve a compact camera device. Therefore, the area occupied by the camera device on the display screen or touchpad increases, leading to an increase in the area of ​​unusable regions that the user cannot access through the camera device. Therefore, a new optical system and camera device that can solve the above problems is needed. Summary of the Invention

[0004] Technical issues

[0005] Embodiments of the present invention provide an optical system with improved optical properties.

[0006] Embodiments of the present invention provide a camera device that enables miniaturization of the lens barrel.

[0007] Technical solution

[0008] An optical system according to an embodiment of the present invention includes: a plurality of lenses arranged sequentially from the object side to the image side along an optical axis; and a lens barrel in which the plurality of lenses are housed, and an entrance aperture is formed on the upper surface of the lens barrel, wherein the lens barrel includes a head disposed on a region corresponding to the lens closest to the object side among the plurality of lenses, and the upper length of the head may be less than the lower length of the head in a direction perpendicular to the optical axis.

[0009] According to an embodiment of the invention, the head includes an inner surface facing the lens closest to the object side and an outer surface corresponding to the inner surface, and the inner surface may have two inclined surfaces with different or the same inclination angles. The distance between the inner and outer surfaces may become closer from the upper part of the head to the lower part of the head. In the lower part of the head, the distance between the inner and outer surfaces may be constant.

[0010] According to an embodiment of the present invention, the lens closest to the object side includes a connecting surface that connects an end of the effective diameter on the object-side surface to the upper surface of a rib disposed around the effective region of the lens closest to the object side. A virtual first line parallel to the optical axis contacts a first end of the effective diameter and a first inner surface of the lens barrel, and the first point where the virtual first line contacts the inner surface of the lens barrel may have a maximum width at the upper part of the head of the lens barrel in a direction perpendicular to the optical axis. The connecting surface and the inner surface of the lens barrel may be spaced apart from each other. The connecting surface and the inner surface of the lens barrel may include regions parallel to each other. A virtual second line parallel to the optical axis contacts a second end of the effective diameter and a second inner surface of the lens barrel, a second point where the virtual second line contacts the inner surface of the lens barrel, and a virtual third line connecting the first point and the second point may contact the object-side surface of the lens closest to the object side.

[0011] According to an embodiment of the invention, a virtual second line parallel to the optical axis contacts the second end of the effective diameter and the second inner surface of the lens barrel, and a second point contacts the virtual second line and the inner surface of the lens barrel. A virtual third line connecting the first point and the second point may be spaced apart from the object-side surface of the lens closest to the object side.

[0012] According to an embodiment of the present invention, the thickness of the connecting surface can be greater than the thickness of the rib in the direction of the optical axis. Furthermore, the tilt angle between the inner surface of the head and the optical axis can be greater than 0 degrees and less than 30 degrees.

[0013] The camera device according to an embodiment of the present invention includes a plurality of lenses arranged sequentially along the optical axis from the object side to the image side. The plurality of lenses include a first lens and a connecting surface. The first lens is positioned closest to the object side. The connecting surface connects the end of the effective diameter of the object-side surface of the first lens to the upper surface of a rib disposed around the effective area of ​​the first lens. The tilt angle between the connecting surface and the optical axis can be less than 30 degrees.

[0014] According to an embodiment of the present invention, the tilt angle between the connecting surface and the optical axis can be greater than 0 degrees and less than 30 degrees. The plurality of lenses includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially along the optical axis from the object side to the image side, wherein the first lens and the second lens can satisfy Equation 1.

[0015] [Formula 1]

[0016] 3 < TL1 / T2

[0017] In Equation 1, TL1 refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the vertex of the object-side surface of the second lens on the optical axis. Furthermore, T2 refers to the center thickness of the second lens.

[0018] The first lens can satisfy Equation 2.

[0019] [Equation 2]

[0020] 0 < Sag1 / T1 < 0.3

[0021] In Equation 2, Sag1 is the Sag value of the object-side surface of the first lens, which refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the end of the effective diameter of the object-side surface of the first lens in the direction of the optical axis, and T1 refers to the center thickness of the first lens.

[0022] The first lens can satisfy Equation 3.

[0023] [Formula 3]

[0024] 0.4 < TH1 / TL1 < 1

[0025] In Equation 3, TH1 refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the upper surface of the rib of the first lens in the direction of the optical axis.

[0026] Beneficial effects

[0027] The camera device according to the embodiment can have improved optical characteristics. Specifically, the optical system of the camera device can correct aberration characteristics and achieve high definition and high resolution. The camera device according to the embodiment can be configured to be compact in size. Specifically, in the lens barrel of the camera device, the head and extension can be configured in a stepped shape. Therefore, when the camera device is inserted and placed in a separate component, such as a display, the size of the head can be reduced, thereby minimizing the area of ​​the camera device exposed on the surface of the component. Furthermore, the area of ​​the ineffective region formed by the camera device onto the component can be minimized.

[0028] The camera device according to the embodiment can have improved reliability. Specifically, the first lens disposed in the head may include a connecting surface facing the inner surface of the head, and this connecting surface may have a tilt angle of less than about 30 degrees relative to the optical axis. Therefore, it is possible to prevent or minimize changes in the thickness of the lens barrel caused by the first lens protruding from the head. Thus, the size of the lens barrel head can be minimized, and the reliability of the lens barrel can be improved. Attached Figure Description

[0029] Figure 1 and Figure 2 This is a configuration diagram of the camera device according to the first embodiment.

[0030] Figure 3 This is a configuration diagram of the camera device according to the second embodiment.

[0031] Figure 4 This is a configuration diagram of the camera device according to the third embodiment.

[0032] Figure 5 It is a graph showing the modulation transfer function (MTF) characteristics of a camera device according to an exemplary embodiment.

[0033] Figure 6 It is a graph showing the aberration characteristics of a camera device according to an exemplary embodiment.

[0034] Figure 7 This is a view illustrating the distortion characteristics of a camera device according to an exemplary embodiment. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The technical spirit of the present invention is not limited to the embodiments described, and it can be implemented in various other forms. Furthermore, one or more components can be selectively combined and substituted for use within the scope of the technical spirit of the present invention. In addition, the terminology (including technical and scientific terms) used in the embodiments of the present invention, unless specifically defined and explicitly described, can be interpreted in a way that is generally understood by one of ordinary skill in the art related to the present invention. Commonly used terms, such as those defined in dictionaries, should be interpreted in light of the context of the related art. Furthermore, the terminology used in the embodiments of the present invention is for explaining the embodiments, not for limiting the present invention. In this specification, the singular form may also include the plural form, and unless otherwise specifically stated in the phrase, when referring to at least one (or more) of A and / or B, C, it may include one or more of all combinations that can be combined with A, B, and C. When describing components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. Such terms are only for distinguishing components from other components and should not determine the nature, order, or procedure of the corresponding constituent elements. Furthermore, when describing a component as "connected," "coupled," or "joined" to another component, this description can include not only cases where the component is directly connected, coupled, or joined to another component, but also cases where the component is "connected," "coupled," or "joined" to another component through which the component is connected. Additionally, when described as being formed or positioned "above" or "below," this description includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or positioned between the two components. Furthermore, when expressed as "above" or "below," it can refer to both the downward and upward directions relative to a single element.

[0036] In this specification, the term "convex surface" can refer to a lens surface with a convex shape in the region corresponding to the optical axis, while the term "concave surface" can refer to a lens surface with a concave shape in the region corresponding to the optical axis. Furthermore, "object-side surface" can refer to the lens surface facing the object relative to the optical axis, while "image-side surface" can refer to the lens surface facing the imaging surface relative to the optical axis. "Vertical direction" can refer to a direction perpendicular to the optical axis, and "end of lens" or "end of lens surface" can refer to the end of the effective region of the lens through which incident light rays pass.

[0037] Figure 1 and Figure 2 This is a configuration diagram of the camera device according to the first embodiment. Figure 3 This is a configuration diagram of the camera device according to the second embodiment. Figure 4 This is a configuration diagram of the camera device according to the third embodiment.

[0038] refer to Figures 1 to 4 The camera device 1000 according to an embodiment may include an optical system 100, which includes a plurality of lenses, a lens barrel 200, and an image sensor 300. The lens barrel 200 may include a receiving space. The plurality of lenses may be disposed within the receiving space. The lens barrel 200 may protect the plurality of lenses disposed within the receiving space from external influences and align the plurality of lenses relative to the optical axis OA. The lens barrel 200 may include an inner surface facing the plurality of lenses and an outer surface corresponding to the inner surface.

[0039] The lens barrel 200 may include a head 210 and an extension 220. Based on the direction of the optical axis OA, the head 210 may be located at the upper part of the lens barrel 200. Specifically, the head 210 may be located at the upper part opposite to the lower part of the adjacent image sensor 300 of the lens barrel 200. The head 210 may be positioned in the region corresponding to the first lens 110 closest to the object side among a plurality of lenses. The head 210 may be positioned in the region corresponding to the effective region A1 of the first lens 110. The head 210 may extend in the direction of the optical axis OA and protrude towards the object side. The head 210 may specifically have a set width d1. Here, the width d1 of the head 210 may refer to the width in the direction perpendicular to the optical axis OA. The width d1 of the head 210 may be smaller than the width of the lower part of the lens barrel 200. Specifically, the width of the upper part of the head 210, which forms the entrance aperture 200h described below, may be smaller than the width of the lower part of the lens barrel 200. The head 210 may have a set height d2. Here, the height d2 of the head 210 is the height in the direction of the optical axis OA, which can refer to the height from the upper surface of the head 210 to the upper surface of the extension 220. When the camera device 1000 is inserted into an additional component (not shown), such as a display, the head 210 can be a region inserted into a hole formed in the substrate. The width d1 and height d2 of the head 210 can vary depending on the size of the hole formed in the component for inserting the head 210. For example, when the camera device 1000 exhibits the same optical performance, the smaller the width d1 of the head 210, the smaller the area occupied by the lens barrel 200, and the more effective the area of ​​the component can be guaranteed.

[0040] The extension 220 can be connected to the head 210. The extension 220 can be connected to the end of the head 210. The extension 220 can be bent and extends from the upper end of the head 210. The extension 220 can extend in a direction different from the optical axis OA. For example, the extension 220 can extend from the end of the head 210 in a direction perpendicular to the optical axis OA. The extension 220 can be disposed in a region corresponding to the rib RB1 of the first lens 110. Here, the rib RB1 of the first lens 110 is a region where no light is incident, and can be an ineffective region disposed around the effective region of the first lens 110. The extension 220 can be disposed facing the object-side surface 111 of the rib RB1 of the first lens 110. The extension 220 can directly contact the object-side surface 111 of the rib RB1. The extension 220 can have a set width. Here, the width of the extension 220 can refer to the width in the direction perpendicular to the optical axis OA. The width of the extension 220 can be greater than the width d1 of the head 210.

[0041] The lens barrel 200 may further include an entrance aperture 200h. The entrance aperture 200h may be formed on the upper surface of the lens barrel 200. The entrance aperture 200h may be disposed on the object-side surface of the lens barrel 200. The entrance aperture 200h is formed through the center of the upper surface of the lens barrel 200 and may communicate with the receiving space of the lens barrel 200. The entrance aperture 200h may be formed on the upper surface of the head 210. The entrance aperture 200h may be formed in the region corresponding to the effective region A1 of the first lens 110. The center of the entrance aperture 200h may overlap with the optical axis OA. A portion of the first lens 110 may be disposed inside the head 210 where the entrance aperture 200h is formed. For example, a portion of the effective region A1 of the first lens 110 may be inserted and disposed within the head 210. The entrance aperture 200h may provide a path for light to enter the camera device 1000. In other words, light incident on the camera device 1000 can be incident on multiple lenses through the entrance aperture 200h, and the optical path is controlled by multiple lenses to provide to the image sensor 300.

[0042] When the head 210 is described in more detail, the head 210 may include an upper region 211 and a lower region 212. The upper region 211 may be the region where the entrance aperture 200h is formed. The lower region 212 may be the portion of the image sensor 300 located at a lower position than the upper region 211. The lower region 212 may be the region connecting the upper region 211 and the extension 220.

[0043] The head 210 may include an inner surface IS facing the first lens 110 and an outer surface OS corresponding to the inner surface IS, and the inner surface IS may include a first inner surface IS1 and a second inner surface IS2. The first inner surface IS1 may be the inner surface of the upper region 211 of the head 210. The first inner surface IS1 may be connected to the entrance aperture 200h. The first inner surface IS1 may extend in the direction of the image sensor 300. In addition, the second inner surface IS2 may be the inner surface of the lower region 212 of the head 210. The second inner surface IS2 may be connected to the first inner surface IS1. The second inner surface IS2 is located at a lower position than the first inner surface IS1 and may extend in the direction of the image sensor 300. The first inner surface IS1 and the second inner surface IS2 may have a tilt angle set relative to the optical axis OA. For example, the tilt angle of the first inner surface IS1 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. In addition, the tilt angle of the second inner surface IS2 relative to the optical axis OA may be greater than or equal to 0 degrees and less than 30 degrees. Furthermore, the tilt angles of the first inner surface IS1 and the second inner surface IS2 relative to the optical axis OA can be different from each other. In this case, the tilt angle of the first inner surface IS1 can be greater than the tilt angle of the second inner surface IS2. Alternatively, the tilt angles of the first inner surface IS1 and the second inner surface IS2 relative to the optical axis OA can be equal.

[0044] The upper region 211 and lower region 212 of the head 210 can have a set length from the optical axis in the vertical direction. Specifically, the vertical length from the optical axis OA to the inner surface IS1 of the upper region 211 can increase from the object side to the image sensor 300. Furthermore, the vertical length from the optical axis OA to the inner surface IS2 of the lower region 212 can increase or remain constant from the upper region 211 to the image sensor. The vertical length from the optical axis OA to the first inner surface IS1 of the upper region 211 can be less than the vertical length from the optical axis OA to the second inner surface IS2 of the lower region 212. Specifically, the minimum value of the vertical length from the optical axis OA in the upper region 211 can be less than the minimum value of the vertical length from the optical axis OA in the lower region 212. Furthermore, the maximum value of the vertical length from the optical axis OA in the upper region 211 can be less than or equal to the maximum value of the vertical length from the optical axis OA in the lower region 212.

[0045] Furthermore, the upper region 211 and lower region 212 of the head 210 can have a set width. Here, the width is the distance between the inner surface IS and the outer surface OS of the head 210 in the direction perpendicular to the optical axis OA, and can refer to the thickness of the head 210. The width of the head 210 can decrease from the upper region 211 to the lower region 212. Specifically, the distance between the first inner surface IS1 and the outer surface OS in the upper region 211 can become closer from the object side to the image sensor 300. Furthermore, the distance between the second inner surface IS2 and the outer surface OS in the lower region 212 can become closer from the object side to the image sensor 300 or remain unchanged.

[0046] The camera device 1000 may include a virtual first line L1 parallel to the optical axis OA. The first line L1 contacts a first end P1, defined as one end of the effective diameter of the object-side surface (first surface S1) of the first lens 110, and may contact the inner surface of the lens barrel 200. Here, the first end P1 may be the contact point between the first surface S1 of the first lens 110 and the connecting surface 113, which will be described below. The first line L1 may contact the inner surface IS of the head 210. Specifically, the first line L1 may contact the first inner surface IS1, which is the inner surface of the upper region 211 of the head 210. Here, the contact point between the first line L1 and the first inner surface IS1 may be defined as a first point IP1. The upper region 211 of the head 210 may have its maximum width at the first point IP1 in a direction perpendicular to the optical axis OA.

[0047] The camera device 1000 may include a virtual second line L2 parallel to the optical axis OA. The second line L2 may contact a second end P2, defined as the other end of the object-side surface (first surface S1) of the first lens 110, and may contact the inner surface of the lens barrel 200. Here, the second end P2 may be the contact point connecting the surface 113 and the rib RB1. The second line L2 may contact the inner surface IS of the head 210. Specifically, the second line L2 may contact either the first inner surface IS1 or the second inner surface IS2 of the head 210. Here, the contact point where the second line L2 and the inner surface IS of the head 210 contact each other may be defined as a second point IP2. At this time, a third line (not shown) is included, which is a virtual straight line passing through the first point IP1 and the second point IP2, and the third line may contact or be spaced from the lens closest to the object side (e.g., the object-side surface (first surface S1) of the first lens 110).

[0048] According to the embodiment, the optical system 100 can be positioned at a location defined by the lens barrel 200. For example, the first lens 110 can be positioned as part of the effective area A1 within the head 210 corresponding to the entrance aperture 200h, and the rib RB1 can be provided on the inner surface of the extension 220 of the lens barrel 200. Therefore, the first lens 110 can be aligned with the optical axis OA in the lens barrel 200 and positioned at a fixed location.

[0049] Furthermore, the camera device 1000 according to the embodiment may include a head 210 and an extension 220 having a stepped shape, and may include the aforementioned outer surface OS, inner surface IS, and extension 220, etc. Therefore, when the camera device 1000 is inserted into and disposed in an additional component, such as a display, the size of the head 210 into which it is inserted can be reduced. Thus, the area exposed to the component surface by the camera device 1000 can be minimized, and the area of ​​the ineffective region formed on the component by the camera device 1000 can be effectively reduced.

[0050] Optical system 100 may include multiple lenses. For example, optical system 100 may include four or more lenses. Specifically, optical system 100 may include five lenses. Optical system 100 may include a first lens 110, a second lens 120, a third lens 130, a fourth lens 140, and a fifth lens 150. The first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 may be arranged sequentially along the optical axis OA of optical system 100. Light corresponding to object information passes through the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 and may be incident on image sensor 300. Each of the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 may include an effective area and an ineffective area. The effective area may be the area through which light incident on each of the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 passes. In other words, the effective region can be the area where incident light is refracted to achieve optical properties. The ineffective region is the ribs set around the effective region, and can be an area where no incident light is received. The ineffective region can be an area unrelated to optical properties. In addition, the ineffective region can be an area fixed to the lens barrel 200, etc.

[0051] Image sensor 300 can detect light. Specifically, image sensor 300 can detect light passing sequentially through first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150. Image sensor 300 may include a charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS).

[0052] A filter (not shown) can be further disposed between the plurality of lenses 110, 120, 130, 140, and 150 and the image sensor 300. The filter can be disposed between the image sensor 300 and the last lens (fifth lens 150) closest to the image sensor 300 among the plurality of lenses 110, 120, 130, 140, and 150. The filter can include at least one of an infrared filter and an optical filter, such as a cover glass. The filter can allow light of a defined wavelength band to pass through and filter light of other wavelength bands. When the filter includes an infrared filter, radiant heat emitted from external light can be blocked so as not to be transferred to the image sensor 300. Furthermore, the filter can transmit visible light and reflect infrared light.

[0053] The camera device 1000 according to this embodiment may include an aperture stop (not shown) for adjusting the amount of incident light. The aperture stop may be disposed between an object and a first lens 110, or between two lenses selected from the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150. For example, the aperture stop may be disposed on the object-side surface of the first lens 110. At least one lens selected from the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 may serve as an aperture stop. For example, the object-side surface or image-side surface of one lens selected from the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 may serve as an aperture stop for adjusting the amount of light.

[0054] The plurality of lenses included in the optical system 100 according to the embodiment will now be described in more detail.

[0055] Table 1

[0056]

[0057] Table 1 shows the radius of curvature, thickness of each lens, and distances, refractive indices, Abbe numbers, and focal lengths between the first lens 110, second lens 120, third lens 130, fourth lens 140, and fifth lens 150 according to this embodiment. Referring to Table 1, the first lens 110 may have a positive (+) diopter. The first lens 110 may comprise a plastic or glass material. For example, the first lens 110 may be made of a plastic material. The first lens 110 may comprise a first surface S1 defined as an object-side surface and a second surface S2 defined as an image-side surface. In this case, the first surface S1 may be convex. The second surface S2 may be concave. That is, the first lens 110 may have a meniscus shape convex toward the object side. At least one of the first surface S1 and the second surface S2 may be aspherical. For example, both the first surface S1 and the second surface S2 may be aspherical. The first lens 110 may include a connecting surface 113. The connecting surface 113 may be a surface disposed between the first surface S1 and the object-side surface 111, where the object-side surface 111 is the upper surface of the rib RB1. Specifically, the connecting surface 113 may be a surface connecting the first end P1 of the effective diameter of the object-side surface (first surface S1) of the first lens 110 and the upper surface 111 of the rib RB1. The connecting surface 113 may have at least one of a straight line and a curved shape. For example, the connecting surface 113 may be configured as a straight line to connect the end of the effective diameter and the upper surface 111 of the rib RB1. The connecting surface 113 may face the inner surface of the head 210 formed by the entrance aperture 200h. The connecting surface 113 may have a set thickness. Here, the thickness may refer to the thickness in the direction of the optical axis OA. The thickness of the connecting surface 113 may be greater than the thickness of the rib RB1 of the first lens 110. The connecting surface 113 may be formed to have a set tilt angle relative to the optical axis OA. The tilt angle between the connecting surface 113 and the optical axis OA may be less than about 30 degrees. Furthermore, in the first lens 110, the boundary between the connecting surface 113 and the upper surface 111 of the rib RB1 can have an angled shape. However, this embodiment is not limited to this; the boundary can be set as a curved surface with a predetermined curvature.

[0058] The second lens 120 may have a negative (-) refractive power. The second lens 120 may comprise a plastic or glass material. For example, the second lens 120 may be made of a plastic material. The second lens 120 may include a third surface S3 defined as an object-side surface and a fourth surface S4 defined as an image-side surface. The third surface S3 may be convex. The fourth surface S4 may be concave. That is, the second lens 120 may have a meniscus shape convex towards the object side. At least one of the third surface S3 and the fourth surface S4 may be aspherical. For example, both the third surface S3 and the fourth surface S4 may be aspherical.

[0059] The third lens 130 may have a positive (+) or negative (-) refractive power. Specifically, the third lens 130 may have a positive (+) refractive power. The third lens 130 may comprise a plastic or glass material. For example, the third lens 130 may be made of a plastic material. The third lens 130 may comprise a fifth surface S5 defined as an object-side surface and a sixth surface S6 defined as an image-side surface. The fifth surface S5 may be convex. The sixth surface S6 may be concave. That is, the third lens 130 may have a meniscus shape convex toward the object side. At least one of the fifth surface S5 and the sixth surface S6 may be aspherical. For example, both the fifth surface S5 and the sixth surface S6 may be aspherical.

[0060] The fourth lens 140 may have a positive (+) refractive power. The fourth lens 140 may comprise a plastic or glass material. For example, the fourth lens 140 may be made of a plastic material. The fourth lens 140 may include a seventh surface S7 defined as the object-side surface and an eighth surface S8 defined as the image-side surface. The seventh surface S7 may be concave. The eighth surface S8 may be convex. That is, the fourth lens 140 may have a meniscus shape convex towards the image side. At least one of the seventh surface S7 and the eighth surface S8 may be aspherical. For example, both the seventh surface S7 and the eighth surface S8 may be aspherical.

[0061] The fifth lens 150 may have a negative (-) refractive power. The fifth lens 150 may comprise a plastic or glass material. For example, the fifth lens 150 may be made of a plastic material. The fifth lens 150 may comprise a ninth surface S9 defined as the object-side surface and a tenth surface S10 defined as the image-side surface. The ninth surface S9 may be concave. The tenth surface S10 may be concave. That is, the fifth lens 150 may have a concave shape on both sides. At least one of the ninth surface S9 and the tenth surface S10 may be aspherical. For example, both the ninth surface S9 and the tenth surface S10 may be aspherical.

[0062] In the optical system 100 according to the embodiment, the values ​​of the aspherical coefficients of each lens surface are shown in Table 2 below.

[0063] Table 2

[0064] K 0.145620396 0 0 0 0 A -0.01133467 -0.1179992 -0.13501809 -0.12373895 -0.17920802 B 0.054343409 0.433457783 -0.05709058 0.256068421 -0.61701149 D -0.89025866 -4.3895759 0.607326615 0.019980264 4.325307599 E 7.714147645 20.76668616 -6.16217177 -4.15458997 -13.3809947 F -36.7999294 -57.4543464 25.63995636 18.62749118 23.59724485 G 99.39775715 92.83862194 -52.6254517 -40.6885044 -24.5761773 H -152.268711 -80.9662938 53.9472389 49.71184273 14.00519552 I 123.4129637 29.48502877 -22.030157 -32.6425428 -3.34186442 J -41.1214772 0 0 9.02562275 0 S6 S7 S8 S9 S10 K 0 0 -1.27530967 1.314250859 -0.97994531 A -0.01046298 0.168720148 0.436157739 0.276795086 -0.34396818 B -1.2059514 —0.77441729 -0.90789981 -1.07621764 0.195703871 D 3.868194588 1.098466354 1.093987107 1.568925333 -0.07698649 E -7.00000934 -0.49866785 -0.83215988 -1.3406384 0.018431071 F 7.998400254 -0.34140694 0.406346352 0.732594541 -0.00212301 G -5.7381048 0.581096492 -0.10872016 -0.26321165 -9.24E-05 H 2.359881015 -0.32880899 0.008402728 0.061801784 6.44E-05 I -0.41993452 0.088489545 0.00221863 -0.00877918 -7.94E-06 J 0 -9.47E-03 -0.00037875 5.75E-04 3.44E-07

[0065] Referring to the following figures, several embodiments of the tilt angle of the connecting surface 113 of the first lens 110 will be described. (Refer to...) Figure 1 and Figure 2In the first embodiment, the head 210 may include an upper region 211 containing a first inner surface IS1 and a lower region 212 containing a second inner surface IS2. The first inner surface IS1 and the second inner surface IS2 may have tilt angles set relative to the optical axis OA. For example, the tilt angle of the first inner surface IS1 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. Similarly, the tilt angle of the second inner surface IS2 relative to the optical axis OA may be greater than or equal to 0 degrees and less than 30 degrees. For example, the tilt angle of the second inner surface IS2 may be 0 degrees, parallel to the optical axis OA. That is, in the first embodiment, the tilt angle of the first inner surface IS1 may be greater than the tilt angle of the second inner surface IS2.

[0066] The upper region 211 and lower region 212 of the head 210 can have a set length in the vertical direction from the optical axis OA. Specifically, the vertical length from the optical axis OA to the inner surface IS1 of the upper region 211 can increase from the object side to the image sensor 300. Furthermore, the vertical length from the optical axis OA to the inner surface IS2 of the lower region 212 can remain constant from the upper region 211 to the image sensor 300.

[0067] In this case, the vertical length from the optical axis OA to the first inner surface IS1 of the upper region 211 can be less than the vertical length from the optical axis OA to the second inner surface IS2 of the lower region 212. Specifically, the minimum vertical length of the optical axis OA in the upper region 211 can be less than the minimum vertical length of the optical axis OA in the lower region 212. Furthermore, the maximum vertical length of the optical axis OA in the upper region 211 can be the same as the maximum vertical length of the optical axis OA in the lower region 212. The upper region 211 and the lower region 212 of the head 210 can have a set width. Specifically, the distance (width) between the first inner surface IS1 and the outer surface OS in the upper region 211 can become closer from the object side to the image sensor 300. Furthermore, in the lower region 212, the distance (width) between the second inner surface IS2 and the outer surface OS remains constant from the object side to the image sensor 300, and can be constant. The first lens 110 disposed in the head 210 may include a connecting surface 113 having a set tilt angle. Specifically, the connecting surface 113 may be connected between the first end P1 of the first surface S1 of the first lens 110 and the upper surface 111 of the rib RB1, and may have a straight shape.

[0068] In the first embodiment, the tilt angle between the connecting surface 113 and the optical axis OA can be less than approximately 30 degrees. Specifically, the tilt angle can be 0 degrees. That is, the connecting surface 113 can be configured to be parallel to the optical axis OA and can include a region parallel to the inner surface IS. For example, the connecting surface 113 can be configured to be parallel to the second inner surface IS2. Furthermore, the connecting surface 113 can be spaced apart from the inner surface IS of the head 210. The camera device 1000 can include a first line L1 and a second line L2 parallel to the optical axis OA. The first line L1 can contact the first end P1 of the first lens 110 and the first point IP1 of the inner surface IS of the head 210. Furthermore, the second line L2 can contact the second end P2 of the first lens 110 and the second point IP2 of the inner surface IS of the head 210.

[0069] According to the first embodiment, the connecting surface 113 can have a tilt angle of 0 degrees relative to the optical axis OA. Therefore, the first line L1 and the second line L2 can overlap. That is, the first point IP1 and the second point IP2 can be the same point, and the first end P1 and the second end P2 can be arranged on the same line as the first line L1 or the second line L2. Therefore, a third line extending through the first point IP1 and the second point IP2 and parallel to the optical axis OA can contact the first surface S1 of the first lens 110. Specifically, the third line can contact the first end P1 of the first surface S1.

[0070] Therefore, the region of the lens barrel 200 corresponding to the first lens 110 can have improved reliability. For example, the boundary region between the head 210 and the extension 220 in the lens barrel 200 may have relatively weak rigidity due to the protruding head 210. However, in the first embodiment, since the tilt angle satisfies 0 degrees, the thickness of the outer surface and inner surface of the head 210 facing the first lens 110 may not be changed by the first lens 110. Therefore, in the lens barrel 200, the boundary region between the head 210 and the extension 220, and each of the head 210 and the extension 220, can have a thickness that ensures rigidity. Therefore, the lens barrel 200 can have improved reliability. Furthermore, the lens barrel 200 can effectively reduce the size of the head 210 of the insertion member.

[0071] refer to Figure 3In the second embodiment, the head 210 may have an upper region 211 including a first inner surface IS1 and a lower region 212 including a second inner surface IS2. The first inner surface IS1 and the second inner surface IS2 may have tilt angles set relative to the optical axis OA. For example, the tilt angle of the first inner surface IS1 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. Similarly, the tilt angle of the second inner surface IS2 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. For example, in the second embodiment, the tilt angle of the first inner surface IS1 may be greater than the tilt angle of the second inner surface IS2.

[0072] The upper region 211 and lower region 212 of the head 210 can have a set length in the vertical direction from the optical axis OA. Specifically, the vertical length from the optical axis OA to the inner surface IS1 of the upper region 211 can increase from the object side to the image sensor 300. Furthermore, the vertical length from the optical axis OA to the inner surface IS2 of the lower region 212 can increase from the upper region 211 to the image sensor 300. The vertical length from the optical axis OA to the first inner surface IS1 of the upper region 211 can be less than the vertical length from the optical axis OA to the second inner surface IS2 of the lower region 212. Specifically, the minimum vertical length of the optical axis OA in the upper region 211 can be less than the minimum vertical length of the optical axis OA in the lower region 212. Furthermore, the maximum vertical length of the optical axis OA in the upper region 211 can be less than the maximum vertical length of the optical axis OA in the lower region 212.

[0073] The upper region 211 and lower region 212 of the head 210 can have a set width. Specifically, the distance (width) between the first inner surface IS1 and the outer surface OS in the upper region 211 can become closer from the object side to the image sensor 300. Furthermore, the distance (width) between the second inner surface IS2 and the outer surface OS in the lower region 212 can become closer from the object side to the image sensor 300. In this case, the maximum distance between the first inner surface IS1 and the outer surface OS can be greater than the maximum distance between the second inner surface IS2 and the outer surface OS. The first lens 110 disposed in the head 210 can include a connecting surface 113 having a set tilt angle. Specifically, the connecting surface 113 can connect the first end P1 of the first surface S1 of the first lens 110 and the upper surface 111 of the rib RB1, and can have a straight shape.

[0074] In the second embodiment, the tilt angle θ1 between the connecting surface 113 and the optical axis OA can be less than about 30 degrees. Specifically, the tilt angle θ1 can be about 10 degrees. The connecting surface 113 can be spaced apart from the inner surface IS of the head 210. The camera device 1000 can include a first line L1 and a second line L2 parallel to the optical axis OA. The first line L1 can contact a first end P1 of the first lens 110 and a first point IP1 of the inner surface IS of the head 210. In addition, the second line L2 can contact a second end P2 of the first lens 110 and a second point IP2 of the inner surface IS of the head 210. According to the second embodiment, the connecting surface 113 can have a tilt angle of less than about 30 degrees relative to the optical axis OA. Therefore, the second line L2 can be positioned based on the optical axis OA above the first line L1. Therefore, a virtual third line extending through the first point IP1 and the second point IP2 can be separated from the first surface S1 of the first lens 110 and the connecting surface 113.

[0075] refer to Figure 4 In the third embodiment, the head 210 may include an upper region 211 containing a first inner surface IS1 and a lower region 212 containing a second inner surface IS2. The first inner surface IS1 and the second inner surface IS2 may have tilt angles set relative to the optical axis OA. For example, the tilt angle of the first inner surface IS1 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. Similarly, the tilt angle of the second inner surface IS2 relative to the optical axis OA may be greater than 0 degrees and less than 30 degrees. For example, in the third embodiment, the tilt angle of the first inner surface IS1 may be greater than the tilt angle of the second inner surface IS2.

[0076] The upper region 211 and lower region 212 of the head 210 can have a set length in the vertical direction from the optical axis OA. Specifically, the vertical length from the optical axis OA to the inner surface IS1 of the upper region 211 can be increased from the object side to the image sensor 300. Furthermore, the vertical length from the optical axis OA to the inner surface IS2 of the lower region 212 can be increased from the upper region 211 to the image sensor 300.

[0077] In this case, the vertical length from the optical axis OA to the first inner surface IS1 of the upper region 211 can be less than the vertical length from the optical axis OA to the second inner surface IS2 of the lower region 212. Specifically, the minimum vertical length from the optical axis OA in the upper region 211 can be less than the minimum vertical length from the optical axis OA in the lower region 212. Additionally, the maximum vertical length from the optical axis OA in the upper region 211 can be less than the maximum vertical length from the optical axis OA in the lower region 212. The upper region 211 and the lower region 212 of the head 210 can have a set width. Specifically, in the upper region 211, the distance (width) between the first inner surface IS1 and the outer surface OS can become closer from the object side to the image sensor 300. Furthermore, in the lower region 212, the distance (width) between the second inner surface IS2 and the outer surface OS can become closer from the object side to the image sensor 300. In this case, the maximum distance between the first inner surface IS1 and the outer surface OS can be greater than the maximum distance between the second inner surface IS2 and the outer surface OS. The first lens 110 disposed in the head 210 may include a connecting surface 113 having a set tilt angle. Specifically, the connecting surface 113 may connect the first end P1 of the first surface S1 of the first lens 110 and the upper surface 111 of the rib RB1, and may have a straight shape.

[0078] In the third embodiment, the tilt angle θ1 between the connecting surface 113 and the optical axis OA can be less than about 30 degrees. Specifically, the tilt angle θ1 can be about 20 degrees. The connecting surface 113 can be spaced apart from the inner surface IS of the head 210. The camera device 1000 can include a first line L1 and a second line L2 parallel to the optical axis OA. The first line L1 can contact the first end P1 of the first lens 110 and the first point IP1 of the inner surface IS of the head 210. In addition, the second line L2 can contact the second end P2 of the first lens 110 and the second point IP2 of the inner surface IS of the head 210. According to the third embodiment, the connecting surface 113 can have a tilt angle of less than about 30 degrees relative to the optical axis OA. Therefore, the second line L2 can be positioned based on the optical axis OA above the first line L1. Therefore, a virtual third line extending through the first point IP1 and the second point IP2 can be separated from the first surface S1 of the first lens 110 and the connecting surface 113.

[0079] In the lens barrel 200 according to the second and third embodiments, the boundary region between the head 210 and the extension 220 may have relatively weak rigidity due to the protruding head 210. However, in the second and third embodiments, the tilt angles θ1 and θ2 can be less than about 30 degrees, about 10 degrees, and about 20 degrees, respectively. Therefore, the thickness variation between the outer and inner surfaces of the head 210 can be minimized by the first lens 110. That is, in this embodiment, the boundary region between the head 210 and the extension 220 in the lens barrel 200, and each of the head 210 and the extension 220, can have a thickness that ensures rigidity. Therefore, the lens barrel 200 can have improved reliability. Furthermore, the lens barrel 200 can effectively reduce the size of the head 210 in the insertion member.

[0080] The camera device 1000 according to the above embodiments can satisfy at least one of the conditions described below. Therefore, the camera device 1000 according to the embodiments has improved optical effects and can be implemented in a small size. In addition, the camera device 1000 can have improved reliability.

[0081] [Formula 1]

[0082] θ < 30

[0083] In Equation 1, θ refers to the tilt angle (degrees) between the connecting surface 113 of the first lens 110 and the optical axis OA.

[0084] [Equation 2]

[0085] 3 < TL1 / T2

[0086] In Equation 2, TL1 refers to the distance (mm) from the vertex (first surface S1) of the object-side surface of the first lens 110 on the optical axis OA to the vertex (third surface S3) of the object-side surface of the second lens 120 on the optical axis OA. Additionally, T2 refers to the center thickness (mm) of the second lens 120.

[0087] [Formula 3]

[0088] 0 < Sag1 / T1 < 0.3

[0089] In Equation 3, Sag1 is the Sag value of the object-side surface (first surface S1) of the first lens 110, and refers to the distance (mm) from the vertex of the object-side surface of the first lens 110 on the optical axis OA to the end of the effective diameter of the object-side surface (first surface S1) of the first lens 110. In addition, T1 refers to the center thickness (mm) of the first lens 110.

[0090] [Formula 4]

[0091] 0.4 < TH1 / TL1 < 1

[0092] In Equation 4, TH1 refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 on the optical axis OA to the upper surface 111 of the rib RB1 of the first lens 110. Furthermore, TL1 refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 on the optical axis OA to the vertex of the object-side surface (third surface S3) of the second lens 120 on the optical axis OA.

[0093] [Formula 5]

[0094] 0.2 < d2 / TL1 < 0.7

[0095] In Equation 5, d2 refers to the height (mm) of the head 210 in the direction of the optical axis OA, and TL1 refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 on the optical axis OA to the vertex of the object-side surface (third surface S3) of the second lens 120 on the optical axis OA.

[0096] [Formula 6]

[0097] 1.2 < F / d1 < 2

[0098] In Equation 6, F refers to the total focal length (mm) of the optical system 100, and d1 is the diameter of the head 210 and refers to the width (mm) of the head 210 in the direction perpendicular to the optical axis OA.

[0099] [Formula 7]

[0100] 1 < TTL / Img < 1.5

[0101] In Equation 7, the total lens length (TTL) refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 to the upper surface of the image sensor 300 along the optical axis OA. Img refers to the distance in the vertical direction from the upper surface of the image sensor 300 overlapping with the optical axis OA to the area of ​​the image sensor 300's 1.0 field of view. In other words, Img is half the diagonal length (mm) of the effective area of ​​the image sensor 300.

[0102] [Formula 8]

[0103] 0.5 < F / TTL < 1

[0104] In Equation 8, F refers to the total focal length (mm) of the optical system 100, and TTL (total lens length) refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 to the upper surface of the image sensor 300 in the direction of the optical axis OA.

[0105] [Formula 9]

[0106] 0.5 < F / f1 < 2

[0107] In Equation 9, F refers to the total focal length (mm) of the optical system 100, and f1 refers to the focal length (mm) of the first lens 110.

[0108] [Formula 10]

[0109] 0.1 < TH2 / EG1 < 0.5

[0110] In Equation 10, TH2 refers to the distance (mm) from the vertex of the imaging side surface (second surface S2) of the first lens 110 on the optical axis OA to the lower surface of the rib RB1 of the first lens 110. Here, the lower surface of the rib RB1 may be opposite to the upper surface 111 of the rib RB1. In addition, EG1 refers to the thickness (mm) of the rib RB1 of the first lens 110 in the direction of the optical axis OA.

[0111] [Equation 11]

[0112] 0.1 <EG1 / TL1<0.5

[0113] In Equation 11, EG1 refers to the thickness (mm) of the rib RB1 of the first lens 110 in the direction of the optical axis OA, and TL1 refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 on the optical axis OA to the vertex of the object-side surface (third surface S3) of the second lens 120 on the optical axis OA.

[0114] [Equation 12]

[0115] 4 < TTL / d2 < 10

[0116] In Equation 12, TTL (total lens length) refers to the distance (mm) from the vertex of the object-side surface (first surface S1) of the first lens 110 to the upper surface of the image sensor 300 in the direction of the optical axis OA, while d2 refers to the height (mm) of the head 210 in the direction of the optical axis OA.

[0117] [Equation 13]

[0118] d1 / Img < 0.8

[0119] In Equation 13, d1 refers to the width (mm) of the head 210 in the direction perpendicular to the optical axis, and refers to the distance in the vertical direction from the upper surface of the image sensor 300 overlapping with the optical axis OA to the area of ​​the image sensor 300's 1.0 field of view. That is, Img refers to half the diagonal length (mm) of the effective area of ​​the image sensor 300.

[0120] [Formula 14]

[0121] 1.5 < G1 < 1.6

[0122] In Equation 14, G1 refers to the refractive index of the first lens 110 for light in the 587nm band.

[0123] [Formula 15]

[0124] 40 < V1 < 60

[0125] In Equation 15, V1 refers to the Abbe number of the first lens 110.

[0126] [Formula 16]

[0127] 1.6 < G2 < 1.7

[0128] In Equation 16, G2 refers to the refractive index of the second lens 120 for light in the 587nm band.

[0129] [Equation 17]

[0130] 15 < V2 < 30

[0131] In Equation 17, V2 refers to the Abbe number of the second lens 120.

[0132] [Formula 18]

[0133]

[0134] In Equation 18, Z is Sag, which can refer to the distance from any position on the aspherical surface to the vertex of the aspherical surface in the direction of the optical axis. Y can refer to the distance from any position on the aspherical surface to the optical axis in the direction perpendicular to the optical axis. In addition, c can refer to the curvature of the lens, and K can refer to the conic constant. A, B, C, D, E, and F can refer to the aspherical constants.

[0135] The camera device 1000 according to the embodiment can satisfy at least one of formulas 1 to 17. In this case, the camera device 1000 can have improved optical characteristics and reduce the size of the head 210 of the lens barrel 200. When the camera device 1000 satisfies at least one of formulas 1 to 17, the lens barrel 200 can prevent or minimize thickness variations in a region caused by the lens housed therein, thereby leading to further improvements in reliability. Therefore, when the camera device 1000 is inserted and placed in a component such as a display, the camera device 1000 has improved reliability and the area occupied by the camera device 1000 on the surface of the component can be minimized.

[0136] Table 3

[0137]

[0138] Table 4

[0139]

[0140] Table 3 relates to the items of the above-described formulas in the camera device 1000 according to the first to third embodiments, and relates to the total lens length (TTL), total focal length (F), Img, and the tilt angle between the connecting surface 113 and the optical axis OA of the optical system 100. Additionally, Table 4 shows the result values ​​of formulas 1 to 17 in the camera device 1000 according to the first to third embodiments. Referring to Table 4, it can be seen that the camera device 1000 according to the first to third embodiments satisfies at least one of formulas 1 to 17. Specifically, it can be seen that the camera device 1000 according to the embodiments satisfies all of the above-described formulas 1 to 17. Therefore, the camera device 1000 according to the first to third embodiments can have the following characteristics: Figures 5 to 7 The modulation transfer function (MTF) characteristics, aberration characteristics, and distortion characteristics are shown. Specifically, Figure 6 This is an aberration diagram of the optical system 100 according to an embodiment, which measures longitudinal spherical aberration, astigmatism field of view, and distortion from left to right. Figure 6 In the diagram, the X-axis can represent focal length (mm) and distortion (%), and the Y-axis can represent the image height. Furthermore, the spherical aberration graph is a graph of light in the wavelength bands of approximately 435 nm, approximately 486 nm, approximately 546 nm, approximately 587 nm, and approximately 656 nm, while the astigmatism and distortion graphs are graphs of light in the wavelength band of 546 nm. That is, the camera device 1000 according to the first to third embodiments can have improved optical characteristics. Furthermore, the lens barrel 200 of the camera device 1000 can be effectively reduced in size while ensuring the reliability of the head 210 inserted into the independent substrate. Therefore, the camera device 1000 according to the embodiments can be implemented in a small size and has improved reliability, and thus can be applied to various substrates.

[0141] The features, structures, effects, etc., described in the above embodiments are included in at least the embodiments of the present invention, but are not necessarily limited to these embodiments. Furthermore, the features, structures, and effects described in each embodiment can be combined or modified by those skilled in the art to which that embodiment pertains. Therefore, content related to these combinations and variations should be understood as being included within the scope of the present invention. Moreover, although the embodiments of the present invention have been described in detail above, these are merely examples and do not limit the present invention. Those skilled in the art can illustrate the above content without departing from the basic characteristics of the embodiments of the present invention. It can be seen that various variations and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. Differences related to these modifications and applications should be understood as being included within the scope of the present invention as defined in the appended claims.

Claims

1. A camera device, comprising: Multiple lenses are arranged sequentially from the object side to the image side along the optical axis, and the multiple lenses include a first lens, a second lens, a third lens, a fourth lens, and a fifth lens; as well as A lens barrel, in which the plurality of lenses are housed, and an entrance aperture is formed on the upper surface of the lens barrel. The lens barrel includes a head, which is disposed in the region corresponding to the first lens, which is closest to the object side among the plurality of lenses. Specifically, in a direction perpendicular to the optical axis, the length of the upper part of the head is less than the length of the lower part of the head. The lens tube includes a receiving space. The plurality of lenses are disposed within the receiving space of the lens barrel. The head protrudes towards the object. The width of the head is the width along the optical axis in the vertical direction, and is smaller than the width of the lower part of the lens barrel. The lens barrel includes an extension that bends at the image side of the head and extends in a direction perpendicular to the optical axis. The head includes an inner surface facing the first lens. The inner surface includes a first inner surface on the upper region of the head and a second inner surface on the lower region of the head. The first inner surface and the second inner surface have different tilt angles relative to the optical axis. The head includes an outer surface corresponding to the inner surface, and the height of the head in the direction of the optical axis is d2. Wherein, in the direction of the optical axis, the distance from the vertex of the object-side surface of the first lens to the vertex of the object-side surface of the second lens disposed on the image side of the first lens is TL1, and The camera device satisfies the following formula: Formula: 0.2 <d2 / TL1<0.7。 2. The camera device according to claim 1, wherein, The distance between the inner surface and the outer surface of the head decreases from the upper part of the head to the lower part of the head.

3. The camera device according to claim 1, wherein, At the lower part of the head, the distance between the second inner surface and the outer surface is constant, and Wherein, the vertical length from the optical axis to the first inner surface located on the upper part of the head to the optical axis is less than the vertical length from the optical axis to the second inner surface located on the lower part to the optical axis.

4. The camera device according to any one of claims 1 to 3, wherein, The first lens includes a connecting surface, the end of the effective diameter of the connecting surface connecting to the object side surface of the connecting surface and the upper surface of the rib disposed around the effective area of ​​the first lens, and Wherein, a virtual first line parallel to the optical axis contacts the first end of the effective diameter and the first inner surface of the lens barrel, and Wherein, the first point where the virtual first line contacts the inner surface of the lens barrel has the maximum width at the upper part of the head of the lens barrel in a direction perpendicular to the optical axis.

5. The camera device according to claim 4, wherein, The connecting surface and the inner surface of the lens barrel are spaced apart from each other.

6. The camera device according to claim 5, wherein, The connecting surface and the inner surface of the lens barrel include regions that are parallel to each other.

7. The camera device according to claim 6, wherein, A virtual second line parallel to the optical axis contacts the second end of the effective diameter and the second inner surface of the lens barrel. The camera device includes a second point that contacts the virtual second line and the inner surface of the lens barrel. The virtual third line connecting the first point and the second point is in contact with the object-side surface of the first lens.

8. The camera device according to claim 5, wherein, The virtual second line, parallel to the optical axis, contacts the second end of the effective diameter and the second inner surface of the lens barrel. The camera device includes a second point that contacts the virtual second line and the inner surface of the lens barrel. The virtual third line connecting the first point and the second point is spaced apart from the object-side surface of the first lens.

9. The camera device according to claim 8, wherein, In the direction of the optical axis, the thickness of the connecting surface is greater than the thickness of the rib.

10. The camera device according to claim 9, wherein, The tilt angle between the first inner surface of the head and the optical axis is greater than 0 degrees and less than 30 degrees.

11. A camera device, comprising: Multiple lenses are arranged sequentially along the optical axis from the object side to the image side, and the multiple lenses include a first lens, a second lens, a third lens, a fourth lens, and a fifth lens; as well as A lens barrel, wherein the lens barrel houses the first lens, the second lens, the third lens, the fourth lens, and the fifth lens. The first lens includes a connecting surface that connects the end of the effective diameter of the object-side surface of the first lens to the upper surface of a rib disposed around the effective area of ​​the first lens. Wherein, the tilt angle between the connecting surface and the optical axis is less than 30 degrees. The lens barrel includes a receiving space and a head disposed around the upper part of the first lens. The plurality of lenses are disposed within the receiving space of the lens barrel. The head protrudes towards the object. The width of the head is the width in the vertical direction relative to the optical axis, and is smaller than the width of the lower part of the lens barrel. The lens barrel includes an extension that bends at the image side of the head and extends in a direction perpendicular to the optical axis. The head includes an inner surface facing the first lens. The inner surface includes a first inner surface on the upper region of the head and a second inner surface on the lower region of the head. The first inner surface and the second inner surface have different tilt angles relative to the optical axis. Wherein, the first lens and the second lens satisfy the following equation: [Formula 1] 3 <TL1 / T2 In Equation 1, TL1 refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the vertex of the object-side surface of the second lens on the optical axis, and T2 refers to the center thickness of the second lens.

12. The camera device according to claim 11, wherein, The tilt angle between the connecting surface and the optical axis is greater than 0 degrees and less than 30 degrees, and The thickness of the connecting surface is greater than the thickness of the rib.

13. The camera device according to claim 11, wherein, The first lens satisfies the following equation 2: [Equation 2] 0 <Sag1 / T1<0.3 In Equation 2, Sag1 is the Sag value of the object-side surface of the first lens, which refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the end of the effective diameter of the object-side surface of the first lens in the direction of the optical axis, and T1 refers to the center thickness of the first lens.

14. The camera device according to claim 12, wherein, The first lens satisfies the following equation 3: [Formula 3] 0.4 <TH1 / TL1<1 In Equation 3, TH1 refers to the distance from the vertex of the object-side surface of the first lens on the optical axis to the upper surface of the rib of the first lens in the direction of the optical axis.

Images