Camera module and electronic device including the same

Abstract

According to embodiments of the present disclosure, a camera module can be provided. The camera module can include a lens, at least one reflective and refractive member through which light is reflected at least twice, and an image sensor. The reflective and refractive member can cause at least a portion of light incident to the reflective and refractive member to be totally reflected. Various other embodiments are also possible.

Description

Technical Field

[0001] Embodiments of this disclosure relate, for example, a camera module and an electronic device including the camera module. Background Technology

[0002] Optical devices, such as cameras capable of capturing still images or video, are widely used. While film cameras dominated in the past, digital cameras or camcorders equipped with solid-state image sensors, such as charge-coupled devices (CCDs) or complementary metal-oxide-semiconductor (CMOS), have become commonplace in recent years. Cameras using solid-state image sensors (CCDs or CMOS) are gradually replacing film cameras because they allow for easier storage, reproduction, and transmission of images compared to film cameras.

[0003] As the primary consumer model for cameras has shifted from traditional compact cameras to camera modules embedded in smartphones, the biggest challenge in the camera industry has centered on miniaturization while maintaining image quality. High image quality can be achieved with cameras featuring large optical systems and large imaging surfaces (image sensors). Therefore, there is a trade-off between high image quality and miniaturization, and to overcome this, embodiments employing multiple single-focal-lens camera modules within a single electronic device have been implemented.

[0004] When multiple single-focus lens camera modules are used in an electronic device, zoom effects are typically achieved by giving each a different focal length and manipulating them appropriately with digital zoom. For example, in optical systems corresponding to 35mm film cameras, the most common forms of camera modules used, relative to wide-angle cameras with focal lengths from 24mm to 35mm, are short-focal-length camera modules (e.g., ultra-wide-angle cameras) and long-focal-length camera modules (e.g., telephoto cameras). Among these, telephoto cameras, with their relatively long focal lengths (typically three times longer), require more longitudinal deployment space than other cameras. Therefore, optical systems that include lenses with diameters smaller than those of wide-angle cameras are often employed. However, as the market increasingly demands higher zoom performance, the challenge of arranging cameras within limited space is growing. To address this issue, electronic devices are being developed that incorporate camera modules with high optical performance that are easy to arrange within the electronic device. Camera modules employing folding optical systems can be manufactured by refracting light two or more times and shortening the incident path of light while maintaining the effective focal length of the light.

[0005] The above information is presented as prior art only to aid in understanding this disclosure. No determination or assertion is made as to whether anything described above can be used as prior art with respect to this disclosure. Summary of the Invention

[0006] Technical solution According to embodiments of this disclosure, a camera module may be provided. The camera module may include: a lens; at least one reflecting and refractive element in which light is reflected at least twice; and an image sensor IS. The reflecting and refractive element may cause at least a portion of the light incident on the reflecting and refractive element to be totally internally reflected by satisfying the following Equations 1, 2, 3, 4, and 5 regarding the refractive index for total internal reflection within the reflecting and refractive element.

[0007] [Formula 1] n i ≥(C1+b) / (2a-C2) (where n) i is the refractive index of the reflecting and refracting component, a is the angle between the incident surface of the reflecting and refracting component and the first reflecting surface adjacent to the incident surface, b is the incident angle of light incident on the reflecting and refracting component, and when the arcsine function of the reciprocal of the refractive index of the reflecting and refracting component is expressed as a linear equation of the reciprocal of the reflecting and refracting component, C1 and C2 are the coefficients and constants of the linear equation, respectively. [Equation 2] 10 <a<50 [Formula 3] b<45 [Formula 4] 1.1 <C1<1.4 [Formula 5] -0.3 <C2<+0.3。

[0008] According to embodiments of this disclosure, an electronic device may be provided. The electronic device may include: a reflective and refractive member configured to reflect and / or refract at least a portion of light; and an image sensor configured to detect at least a portion of light passing through the reflective and refractive member. The reflective and refractive member may include a first surface on which light is incident and a second surface inclined relative to the first surface. The reflective and refractive member may be configured to cause at least a portion of light incident on the reflective and refractive member to be totally internally reflected by satisfying the following equations 9, 10, 11, 12, and 13 regarding a total internal reflection function within the reflective and refractive member.

[0009] [Formula 9] TRF = (C1 + b) / (2a - C2) (Where, a is the angle between the first surface and the second surface adjacent to the first surface, b is the incident angle of light incident on the reflecting and refracting member, and C1 and C2 are the coefficients and constants of the linear equation, respectively, when the arcsine function of the reciprocal of the refractive index of the reflecting and refracting member is expressed as a linear equation of the reciprocal of the reflecting and refracting member).

[0010] [Formula 10] 10 <a<50 [Equation 11] b<45 [Equation 12] 1.1 <C1<1.4 [Equation 13] -0.3 <C2<+0.3。 Attached Figure Description

[0011] The above or other aspects, constructions and / or advantages of embodiments of the present disclosure will become more readily understood from the following detailed description with reference to the accompanying drawings.

[0012] Figure 1 This is a diagram showing a camera module including reflective and refractive components.

[0013] Figure 2 This is a diagram showing a camera module including reflective and refractive components.

[0014] Figure 3 This is a diagram showing a camera module including reflective and refractive components.

[0015] Figure 4 This is an enlarged view showing a portion of the reflective and refractive components.

[0016] Figure 5 This is a diagram illustrating Snell's law of refraction of light.

[0017] Figure 6a It is a diagram showing the state of light refraction without total internal reflection according to Snell's law.

[0018] Figure 6b This is a diagram showing the critical state for total internal reflection according to Snell's law.

[0019] Figure 6c This is a diagram illustrating the state of total internal reflection of light according to Snell's law.

[0020] Figure 7 This is a graph showing the correlation between 1 / n and the arcsine function.

[0021] Figure 8 This is a schematic diagram illustrating the relationship between the F-number and the numerical aperture (NA).

[0022] Figure 9a It is a schematic diagram showing the path of light incident on the reflecting and refracting components and then exiting from the reflecting and refracting components.

[0023] Figure 9b This is an enlarged view showing a portion of the reflective and refractive components.

[0024] Figure 10 It is a diagram showing the state of light incident on the reflecting and refracting components and returning through the first surface.

[0025] Figure 11 It is a diagram showing the state of total internal reflection of light incident on the reflecting and refracting components from the first surface.

[0026] Figure 12 It is a diagram showing the state in which light incident on a reflective and refractive element having a first included angle and a first refractive index is totally reflected and then emitted.

[0027] Figure 13 It is a diagram showing the state of light incident on a reflective and refractive member having a first included angle and a second refractive index, exiting through a first surface and returning.

[0028] Figure 14a It is a diagram showing the state in which light incident at a first angle on a reflective and refractive element having a second included angle and a third refractive index is totally reflected and then emitted.

[0029] Figure 14b It is a diagram showing the state in which light incident at a second angle on a reflective and refractive element having a second included angle and a third refractive index is totally reflected and then emitted.

[0030] Figure 14c It is a diagram showing the state of light incident at a second angle on a reflective and refractive member having a second included angle and a fourth refractive index, exiting and returning through the first surface.

[0031] Figure 15 It is a perspective view showing the reflective and refractive components, including the effective incident area.

[0032] Figure 16a It is a diagram showing the motion paths of light passing through the ineffective incident region and light passing through the effective incident region.

[0033] Figure 16b It is a diagram showing the path of light as it travels through the effective incident region.

[0034] Figure 16c This is a diagram showing reflective and refractive components including a cut surface.

[0035] Figure 17 This is a block diagram illustrating an electronic device (e.g., an optical device) in a network environment according to various embodiments.

[0036] Figure 18 This is a block diagram illustrating a camera module according to various embodiments.

[0037] Throughout the accompanying drawings, similar reference numerals may be assigned to similar parts, components, and / or structures. Detailed Implementation

[0038] Camera modules that include reflective and refractive components such as prisms or mirrors can alter the direction of light travel within these components. By using reflective and refractive components to cause light to reflect and / or refract more times, the overall length of the optical system can be reduced, and the height of the module can be lowered.

[0039] This disclosure may disclose a camera module including reflective and refractive components that satisfy the condition of total internal reflection, such that the direction of light travel within the reflective and refractive components is reflected and / or refracted more times.

[0040] The technical objectives to be achieved by this disclosure are not limited to those described above, and other technical objectives not mentioned will be clearly understood by those skilled in the art through the following description.

[0041] The following description of the accompanying drawings provides an understanding of various exemplary embodiments of the present disclosure, including the claims and their equivalents. Although the exemplary embodiments disclosed in the following description include various specific details to aid understanding, these are considered to be merely one of many exemplary embodiments. Therefore, those skilled in the art will understand that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and constructions will be avoided.

[0042] The terms and words used in the following description and claims are not limited to their literal meanings, but are used to clearly and consistently describe embodiments of this disclosure. Therefore, it will be readily understood by those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and is not intended to limit the scope of this disclosure as defined by the claims and their equivalents.

[0043] It should be understood that, unless the context clearly specifies otherwise, the singular forms “a,” “an,” and “the” include plural indicators. Thus, for example, a reference to “component surface” can be understood to include one or more surfaces of the component.

[0044] Figure 1 This is a diagram showing a camera module including reflective and refractive components. Figure 2 This is a diagram showing a camera module including reflective and refractive components. Figure 3 This is a diagram showing a camera module including reflective and refractive components.

[0045] In the following detailed description, the length direction, width direction, and / or thickness direction of camera module 100 and / or components included in camera module 100 may be referred to. The length direction may be defined as the "Y-axis direction," the width direction may be defined as the "X-axis direction," and the height direction (thickness direction) may be defined as the "direction perpendicular to the X-axis and Y-axis directions." The "direction perpendicular to the X-axis and Y-axis directions" may refer to the "Z-axis direction" in a Cartesian coordinate system. In embodiments, the direction in which the surface of a component faces may refer to the direction in which the normal drawn from the surface of the component points. In embodiments, for the direction in which a component faces, "negative / positive (- / +)" may be referred to in conjunction with the Cartesian coordinate system shown in the figures. For example, the lens closest to object O in camera module 100 (e.g., Figure 2 The surface of the first lens L1 facing the object O and / or the incident surface of the reflecting and refracting components (e.g., Figure 1 The first incident surface 301 and Figure 2 The incident surface 401 in the camera module 100 can be defined as "the surface facing the +Z axis direction", while the lens closest to the image sensor IS in the camera module 100 (e.g., Figure 2 The surface of the fourth lens L4 facing image I and / or the exit surface of the reflecting and refractive elements (e.g., Figure 2 The exit surface 404 in the figure can be defined as "the surface facing the -Z-axis direction". However, the description of these directions is not limited thereto. Although not shown separately in the figures, when the electronic device on which the camera module 100 is mounted is a portable terminal such as a smartphone, unless otherwise stated, the front surface of the electronic device can be understood as "the surface facing the -Z-axis direction" and the rear surface of the electronic device can be understood as "the surface facing the +Z-axis direction". When the camera module 100 is a front-facing camera mounted on the electronic device, the lens closest to the object side (e.g., Figure 2 The surface of the first lens L1 facing the object side O can face the same direction as the front surface of the electronic device, and when the camera module 100 is a rear camera mounted on the electronic device, the lens closest to the object side (e.g., Figure 2The object-facing surface of the first lens L1 can face the same direction as the rear surface of the electronic device. Thus, the distinction of direction is merely for convenience and does not limit the arrangement orientation of the camera module 100 and its components, and the orientation can be set in various ways according to embodiments. In embodiments, "X-axis direction" can be expressed as including both "-X-axis direction" and "+X-axis direction". "Y-axis direction" can also be expressed as including both "+Y-axis direction" and "-Y-axis direction". For example, the thickness of the electronic device can be defined as the distance between the front surface (e.g., the surface facing the -Z-axis direction) and the rear surface (e.g., the surface facing the +Z-axis direction) of the electronic device, and the thickness direction of the electronic device can be defined as the "Z-axis direction". It should be noted that, for the sake of brevity, the above description is based on the Cartesian coordinate system shown in the accompanying drawings, and the description of these directions or components does not limit the embodiments of this disclosure.

[0046] According to an embodiment, the camera module 100 and the electronic device including the camera module may include a lens assembly 200. The electronic device may include a lens assembly 200 having an optical axis OI (dashed line) from the object (or external object) side O towards the image side I. The object side may represent the direction in which the object obj is located, and the image side may represent the direction in which the imaging surface img on which the image is formed is located. Furthermore, the “surface facing the object side O” of the lens may refer, for example, the surface of the lens facing the object obj relative to the optical axis OI, representing the left (or front) surface of the lens in the figures according to the embodiments of this disclosure, and the “surface facing the image side I” may refer to the surface of the lens facing the imaging surface img relative to the optical axis OI, representing the right (or rear) surface of the lens in the figures. The imaging surface img may be, for example, the portion where an imaging device or an image sensor IS is disposed and forms an image. When the lens assembly 200 including at least one lens is aligned with the image sensor IS, the optical axis OI may also be defined as the optical path passing through the center of at least one lens and the center of the image sensor IS.

[0047] Lens assembly 200 may include multiple lenses (e.g., Figure 1 Multiple lenses L1, L2, L3, L4 and L5 in the middle Figure 2 and Figure 3(Multiple lenses L1, L2, L3, and L4 in the lens). In each lens, the portion closer to the optical axis OI may be referred to as the "center portion," and the portion farther from the optical axis OI (or closer to the edge of the lens) may be referred to as the "edge portion." The center portion may be, for example, the portion of the first lens L1 that intersects the optical axis OI. The edge portion may be, for example, the portion of the first lens L1 that is spaced a predetermined distance from the optical axis. The edge portion may include, for example, the end of the lens furthest from the optical axis OI. In this disclosure, when describing the direction faced by a particular lens included in the camera module 100, this direction may refer to the direction faced by the center portion or the edge portion of the corresponding lens surface.

[0048] In the following detailed description of camera module 100, the concept of "optical axis OI" may be mentioned. In the accompanying drawings of the optical system including camera module 100, the optical axis may be shown as a line (imaginary line) connecting the centers of the lenses (or, when multiple lenses are present). For example, the optical axis OI may be shown as a line passing through the center of curvature of the object-facing surface of the first lens (e.g., first lens L1) originating from the object (or external object) side O and the center of curvature of the image-facing surface of the last lens (e.g., nth lens) originating from the object side I. According to another example, the optical axis OI may be shown as a line passing through the center of the image sensor IS and the centers of the multiple lenses. According to embodiments, the optical axis OI may also be understood as a "rotational central axis," wherein the optical performance does not change when rotating about the axis.

[0049] The camera module 100 and the electronic device including the camera module may include at least one of a wide-angle camera, an ultra-wide-angle camera, a macro camera, a telephoto camera, or an infrared photodiode as a light-receiving element, and may include a flash or an infrared laser diode as a light source or light-emitting element. In an embodiment, the electronic device can detect the distance or depth to an object by emitting infrared laser light towards the object using an infrared laser diode and receiving the infrared laser light reflected by the object using an infrared photodiode. In an embodiment, the electronic device may use the camera module 100 having any one or a combination of two or more of the aforementioned cameras to photograph the object, and use a flash to illuminate the object as needed.

[0050] Among cameras that may be included in camera module 100, the total lens length along the optical axis of a wide-angle camera, ultra-wide-angle camera, or macro camera can be smaller compared to a telephoto camera. For example, the total lens length of a telephoto camera with a relatively long focal length can be greater than the total lens length of other cameras. For example, refer to... Figure 1 The "total lens length" can be essentially the distance from the object-side surface of the reflecting and refractive component 300-1 near the object-side O to the imaging surface img of the image sensor IS. Alternatively, for example, refer to... Figure 2The "total lens length" can be essentially the distance from the object-side surface of the first lens L1 located at object-side O to the imaging surface img of the image sensor IS. When defining the "total lens length," the reference used to measure the distance can be based on the distance along the path of light traveling through the center of the lens and moving along the optical axis OI. In embodiments, even if the lenses of a wide-angle camera, ultra-wide-angle camera, or macro camera are arranged along the thickness direction of the electronics (e.g., the +Z-axis and / or -Z-axis directions), the effect on the thickness of the electronics can be substantially smaller than that of a telephoto camera. Therefore, in this case, the wide-angle camera, ultra-wide-angle camera, or macro camera can be positioned in the electronics with the direction of light incident from the outside into the electronics substantially the same as the optical axis direction of the lens. The wide-angle camera, ultra-wide-angle camera, or macro camera can be referred to as a direct-type optical system. In embodiments, compared to a wide-angle camera, ultra-wide-angle camera, or macro camera, a telephoto camera has a smaller field of view but can be used to capture objects at greater distances. Compared to a wide-angle camera, ultra-wide-angle camera, or macro camera, a telephoto camera may include more lenses. For example, when a lens assembly 200 including at least one lens is arranged in the thickness direction of the electronic device (e.g., the +Z-axis and / or -Z-axis direction), the thickness of the electronic device may increase, or a large portion of the lens assembly 200 may protrude beyond the exterior of the electronic device. Therefore, as a means of ensuring a long focal length within a limited space to reduce the thickness of the electronic device including the lens assembly 200 by reflecting or refracting the path of light incident on the lens assembly 200, a telephoto camera may include at least one reflecting and refractive element (e.g., Figure 1 The reflective and refractive components 300 or Figure 2 and 3 The reflective and refractive components 400 in the middle.

[0051] This disclosure provides a camera module 100 including a telephoto camera with a field of view (FOV) between approximately 5 degrees and approximately 35 degrees. When the FOV of the camera module 100 is greater than or equal to 35 degrees, the focal length may be shorter and the distance between the sensor and the lens may be shorter, making the arrangement of reflecting and refractive components difficult. When the FOV of the camera module 100 is less than or equal to 5 degrees, the focal length may be longer and the thickness of the camera module 100 may be increased, which may be detrimental to the miniaturization of the electronic devices.

[0052] Camera module 100 can be made of components including reflective and refractive elements (e.g., Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3The optical system incorporates a reflective and refractive element 400 to reflect and refract light at least twice along its path, such that at least one lens included in the lens assembly 200 can be configured to move forward and backward in the direction of the optical axis OI, thereby preventing or reducing an increase in the thickness of the electronic device. This optical system may be referred to as a folding camera. In the camera module 100 of this disclosure, the folding camera can be used as a telephoto camera.

[0053] In a camera module including a lens assembly forming a direct optical system, the optical axis OI can be formed substantially parallel to any direction in the Cartesian coordinate system (e.g., the Z-axis direction). Conversely, in a camera module 100 including a lens assembly forming a folded optical system, the optical axis OI can include a light path substantially parallel to any direction in the Cartesian coordinate system (e.g., the Z-axis direction), but may also include a light path bent to face another direction (e.g., the Y-axis direction). Unlike a direct camera module where the path of light incident on the lens assembly and reaching the image sensor is formed as a straight line without bending, a folded camera module can be a camera module where the path bends at least twice to allow light incident on the lens assembly to reach the image sensor. Folded camera modules typically include reflecting and refractive elements (e.g., reflecting and refractive elements that reflect and refract light at least once) Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3 The reflective and refractive components 400 in the middle). Reflective and refractive components (e.g., Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3 The reflecting and refractive elements 400 in the image sensor may include, for example, prisms or mirrors. As a criterion for distinguishing between direct-view and folding cameras, whether the path of light reaching the image sensor is bent may be based on the bending caused by the reflecting and refractive elements, rather than the bending of light caused by each lens included in the lens assembly.

[0054] In this disclosure, the expression "reflection and refraction" can be interpreted as having substantially the same meaning as the expression "reflection and / or refraction". Light passing through a "reflecting and refraction member" of this disclosure may be reflected only, refracted only, or both reflected and refracted in its path of travel. Therefore, a "reflecting and refraction member" of this disclosure may also be referred to as a "reflecting member" or a "refracting member". Optionally, in embodiments, a "reflecting and refraction member" of this disclosure may be simply referred to as a "member". Optionally, a "reflecting and refraction member" of this disclosure may be simply referred to as a "mirror", "prism", or "mirror and prism". In "reflection and refraction", the reflection of light and the refraction of light may not necessarily each occur exactly once. When light is reflected by a reflecting and refraction member (e.g., a mirror), it can be interpreted as the light being refracted from the perspective of the entire path of travel of the light. Conversely, when the path of travel of light is refracted by a refraction member (e.g., a prism), it can be interpreted as the light being reflected from the surface of the refraction member.

[0055] According to an embodiment, the lens assembly 200 may include a single lens or a combination of multiple lenses. Multiple lenses (e.g., Figure 1 Lenses L1, L2, L3, L4 and L5 in the middle or Figure 2 and Figure 3 The combinations of lenses L1, L2, L3, and L4 in the figure are not limited to those shown in the accompanying drawings. Although in Figure 1 Five lenses, L1, L2, L3, L4, and L5, are shown in the diagram. Figure 2 and Figure 3 The image shows four lenses L1, L2, L3 and L4, but these are merely exemplary, and the camera module 100 may include fewer (3 or fewer) lenses or more (6 or more) lenses.

[0056] Image sensors (IS) can be configured to detect reflective and refractive components (e.g., Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3 The light incident on the imaging plane (img) is reflected or refracted by the lens assembly 200 and the reflection and refraction components (e.g., the lens assembly 200). For example, light incident from outside the camera module 100 can pass through the lens assembly 200 and the reflection and refraction components (e.g., the lens assembly 200). Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3The reflecting and refractive elements (400) in the image module 100 are detected at the image sensor IS, and the electronic device can acquire an image of the object based on the signals or information detected by the image sensor IS. According to an embodiment, when performing image stabilization, the image sensor IS can be shifted in the length direction (e.g., the +Y and -Y axis directions) or the width direction (e.g., directions perpendicular to the +Y and -Y axes and the +Z and -Z axes) of the camera module 100. In an embodiment, when the lens assembly is used as a telephoto camera, the quality of the captured image can be further improved by incorporating image stabilization. In an embodiment, when the image sensor IS is manufactured to a large size, the optical performance of the camera module 100 can be further improved.

[0057] according to Figure 1 In some embodiments, the reflection and refraction member 300 may include a plurality of reflection and refraction members 300-1 and 300-2. For example, the reflection and refraction member 300 may include a first reflection and refraction member 300-1 and a second reflection and refraction member 300-2. The first reflection and refraction member 300-1 may be positioned closer to the object side O, and the second reflection and refraction member 300-2 may be positioned closer to the image sensor IS side. The lens assembly 200 may be disposed between the first reflection and refraction member 300-1 and the second reflection and refraction member 300-2. (Refer to...) Figure 1 The first reflecting and refractive member 300-1 may include a first incident surface 301 on which light initially incidents, a first reflecting surface 302 inclined relative to the first incident surface 301, and a first exiting surface 303 substantially perpendicular to the first incident surface 301 and inclined relative to the first reflecting surface 302. The second reflecting and refractive member 300-2 may include: a second incident surface 304 on which light passing through the lens assembly 200 incidents; a second reflecting surface 305 inclined relative to the second incident surface 304; and a third reflecting surface 306 substantially perpendicular to the second incident surface 304 and inclined relative to the second reflecting surface 305. (See reference...) Figure 1 Although in the second reflecting and refractive member 300-2, the light reflected by the second reflecting surface 305 is shown as being reflected by the third reflecting surface 306 and traveling back to the second reflecting surface 305 for emission, this disclosure is not limited to this. For example, with Figure 1 The embodiment in which the position of the image sensor IS is changed to face the third reflective surface 306 is also applicable. In this case, light reflected by the second reflective surface 305 can exit through the third reflective surface 306 in the second reflective and refractive member 300-2.

[0058] according to Figure 2 and Figure 3In one embodiment, the reflection and refraction member 400 may be disposed between the lens assembly 200 and the image sensor IS. The arrangement of the reflection and refraction member 400 between the lens assembly 200 and the image sensor IS may include the reflection and refraction member 400 being positioned between optical paths along an optical axis OI, which is formed when the lens assembly 200 and the image sensor IS are aligned. Light incident on the lens assembly 200 from the outside may be reflected and refracted at least twice as it passes through the reflection and refraction member 400, and focused onto or aligned with the image sensor IS. A camera with this structure may be referred to as a "lens-lead-type camera."

[0059] Reference Figure 2 and Figure 3 The reflecting and refraction member 400 may include: an incident surface 401 on which light passing through the lens assembly 200 is incident; a first reflecting surface 402 inclined relative to the incident surface 401; and a second reflecting surface 403 formed inclined relative to the incident surface 401 and spaced apart from the first reflecting surface 402. The incident surface 401 may be the surface through which light passing through the lens assembly 200 initially enters the reflecting and refraction member 400. According to an embodiment, the incident surface 401 may be formed to be spaced apart by a predetermined distance from the lens closest to the image side I (e.g., the fourth lens L4) in the image side I direction. According to an embodiment, the incident surface 401 may be parallel to the front surface (e.g., a surface parallel to the -Z-axis direction) and the rear surface (e.g., a surface parallel to the +Z-axis direction) of the electronic device, respectively, and the optical axis OI may be perpendicular to the incident surface 401. According to an embodiment, at least a portion of the incident surface 401 may be formed with an opening, prism, or mirror capable of transmitting light, thereby enabling light transmission. The first reflective surface 402 may be the surface from which light incident on the incident surface 401 is initially reflected or refracted. The first reflective surface 402 may be formed to be inclined relative to the incident surface 401. According to embodiments, the angle between the first reflective surface 402 and the incident surface 401 can be set in various ways (e.g., Figure 4 (The included angle 'a' in the equation). For example... Figure 2 The angle between the first reflecting surface 402 and the incident surface 401 is shown (e.g., Figure 4 In the example where the included angle a) is approximately 30 degrees, Figure 3 The angle between the first reflecting surface 402 and the incident surface 401 is shown (e.g., Figure 4 An example where the included angle a) is approximately 45 degrees. However, it should be noted that... Figure 2 and Figure 3 The angle between the first reflecting surface 402 and the incident surface 401 can be set in various ways according to the embodiments.

[0060] The reflecting and refraction member 400 may include an exit surface 404 through which light passing through the reflecting and refraction member 400 exits. According to another embodiment, the reflecting and refraction member 400 may include a second reflecting surface 403 formed at an angle relative to the incident surface 401 (or the exit surface 404) and spaced apart from the first reflecting surface 402. According to an embodiment, the angle between the second reflecting surface 403 and the exit surface 404 may be the same as the angle α between the first reflecting surface 402 and the incident surface 401. Light incident perpendicular to the incident surface 401 of the reflecting and refraction member 400 may pass through an internal space (e.g., an optical waveguide) surrounded by the incident surface 401, the first reflecting surface 402, the second reflecting surface 403, and the exit surface 404 of the reflecting and refraction member 400, and exit perpendicular to the exit surface 404. (See also...) Figure 2 An exit surface 404, which is a different surface from the incident surface 401 on which light is incident, may be formed to be spaced apart from the incident surface 401. According to an embodiment, the exit surface 404 may face the incident surface 401, which is substantially parallel to it, while being formed to be spaced apart from the incident surface 401 by a predetermined distance. According to an embodiment, the incident surface 401 and the exit surface 404 may face opposite directions, and the first reflecting surface 402 and the second reflecting surface 403 may face opposite directions. The reflecting and refractive member 400 may have a parallelogram cross-sectional shape, wherein the incident surface 401 is substantially parallel to the exit surface 404, and the first reflecting surface 402 is substantially parallel to the second reflecting surface 403. This can be described as the incident surface 401 being inclined in the same direction as the exit surface 404, and the first reflecting surface 402 being inclined in the same direction as the second reflecting surface 403. Figure 2 In one embodiment, based on the light traveling along the optical axis OI, the light passing through the reflecting and refracting member 400 may have the same direction for both the incident and outgoing light.

[0061] According to the embodiment, although the incident surface 401 and the exit surface 404 may refer to the surface through which light is incident and the surface through which light is exited, respectively, portions of the incident surface 401 and the exit surface 404 may also be used as reflective surfaces. For example, a portion of the incident surface 401 may correspond to the incident region through which light is incident (e.g., Figure 3 The incident light is reflected within the reflective and refractive member 400 by an incident portion 401a, and the remaining regions outside this portion correspond to the reflective region. According to an embodiment, the reflective region may be formed surrounding the incident region.

[0062] In another example, a portion of the emitting surface 404 may correspond to the emitting region through which light exits (e.g., Figure 3The light can be reflected within the reflecting and refraction member 400 by means of an exiting portion 401b, and the remaining area outside this portion may correspond to a reflecting region. According to an embodiment, the reflecting region may be formed around the exiting region.

[0063] According to the embodiment, light reflection can occur even in the incident region of the incident surface 401. For example, when light entering the lens and refractive member 400 through a portion of the incident region of the incident surface 401 passes through a reflective surface (e.g., a first reflective surface 402) and reaches another portion of the incident region again, the light at the other portion of the incident region can be reflected and continue to travel inside the lens and refractive member 400, instead of exiting to the outside through the incident region.

[0064] According to an embodiment, a portion or all of the inner surface of the incident region may be coated such that light that has passed through the incident region may be reflected when it re-enters the incident region. According to an embodiment, the outer surface of the incident surface and / or the exit surface of the reflecting and refractive member may be coated with a material that reduces reflectivity, and the inner surface of the incident surface and / or the exit surface may be coated with a material with a higher reflectivity than the outer surface (e.g., a specular coating).

[0065] According to an embodiment, the incident surface 401 of the reflecting and refraction member 400 may be referred to as the "first surface", the first reflecting surface 402 may be referred to as the "second surface", the second reflecting surface 403 may be referred to as the "third surface", and the exiting surface 404 may be referred to as the "fourth surface".

[0066] Reference Figure 3 The reflecting and refraction member 400 may include a first surface 401, a fourth surface 404 substantially parallel to the first surface 401, a first reflective surface 402 connected to one edge of the first surface 401 and inclined relative to the first surface 401 and the fourth surface 404, and a second reflective surface 403 connected to the other edge of the first surface 401 and inclined relative to the first surface 401 and the fourth surface 404. The first surface 401 may also be referred to as the "incident surface" on which light is incident (e.g., Figure 2 "The incident surface 401"". However, with Figure 2 The implementation methods differ, in Figure 3 In one embodiment, light does not exit through the fourth surface 404 facing the first surface 401, but instead, light can exit through the first surface 401 where light is incident.

[0067] Reference Figure 3Light passing through the lens assembly 200 is incident through a portion 401a (or incident portion 401a) of the first surface 401, and light reflected from the second reflective surface 403 is emitted through another portion 401b (or exit portion 401b) of the first surface 401. According to an embodiment, the reflecting and refraction member 400 may have a form where the first surface 401 is substantially parallel to the fourth surface 404, while the first reflective surface 402 is not parallel to the second reflective surface 403. According to an embodiment, the reflecting and refraction member 400 may have a trapezoidal cross-sectional shape. According to an embodiment, the first surface 401 and the fourth surface 404 may face opposite directions, and the first reflective surface 402 and the second reflective surface 403 may face different directions. In this case, it can be stated that the first surface 401 is inclined in the same direction as the fourth surface 404, and the first reflective surface 402 is inclined in a different direction than the second reflective surface 403. Figure 3 In one embodiment, the light passing through the reflecting and refraction member 400 can have an incident direction and an exit direction that are opposite directions, based on the light traveling along the optical axis OI.

[0068] Figure 3 It shows the relationship with Figure 2 The reflection and refraction components 400 have different shapes. In the following description of the various embodiments, for convenience, the description will focus on those related to… Figure 2 Reflective and refractive members 400 in a corresponding form (e.g., a parallelogram shape). However, this description can also be adapted to correspond to... Figure 3 Reflective and refractive element 400 in the form of (e.g., trapezoidal shape).

[0069] according to Figure 2 and Figure 3 In the embodiments shown, although the reflective and refractive component 400 is shown as a single component, it should be noted that the reflective and refractive component 400 may be formed by a combination of multiple reflective and refractive elements.

[0070] According to embodiments, the camera module 100 according to embodiments of the present disclosure can be configured to achieve total internal reflection (TR), which can facilitate the miniaturization of the camera module 100 and the electronic device including the camera module. (Refer to...) Figures 4 to 16b The following will give the reflection and refraction component 400 for TR ( Figure 4 , Figure 9a , Figure 9b and Figure 10 500 reflective and refractive components Figure 11 500' of reflective and refractive components Figure 12 600 reflective and refractive components Figure 13 The reflective and refractive components are 600'. Figure 14a and Figure 14b700 reflective and refractive components, Figure 14c The reflective and refractive components 700' and Figures 15 to 16b Detailed description of the reflective and refractive components (800).

[0071] Figure 4 This is a diagram illustrating the state of light refraction and / or reflection in the reflecting and refractive components according to an embodiment. Figure 4 This is an enlarged view showing one end of the reflecting and refracting component.

[0072] As Figure 4 The reflection and refraction component 500 can be combined with... Figure 2 and Figure 3 A reflection and refraction member 500, having the same shape as the reflection and refraction member 400 disclosed herein, is described as an example. According to an embodiment, the reflection and refraction member 500 may include a first surface 501 on which light is incident and a second surface 502 inclined relative to the first surface 501. The second surface 502 may include a material that reflects light (e.g., a mirror). For example, the light-reflecting material on the second surface 502 may be formed by coating a specular coating onto the inner surface of the second surface 502.

[0073] Reference Figure 4 In the reflective and refractive component 500 (e.g., Figure 1 Reflective and refractive components 300 or Figure 2 and Figure 3 In the optical path LP within the reflective and refractive member 400, light passing through the first surface 501 can be reflected by the second surface 502. Then, after being reflected by the second surface 502, the light travels back towards the first surface 501, partially exiting through the first surface 501 and partially being reflected again by the first surface 501. To prevent light from exiting through the first surface 501, the TR condition needs to be satisfied at the first surface 501. The TR condition refers to the phenomenon where, when light is incident from a medium with a high refractive index to a medium with a low refractive index, all light is reflected and not refracted. In the camera module, this phenomenon can occur because the refractive index of the reflective and refractive member 500 is higher than the refractive index of the air inside the camera module.

[0074] according to Figure 4In the embodiment shown, for an angle α between the first surface 501 and the second surface 502 of the reflecting and refraction member 500, when an incident ray passes through the first surface 501 at an angle of incidence α, a refracted ray with a refraction angle αb' can be formed. The angle of incidence αb and the refraction angle αb' can be angles measured relative to the normal N1 perpendicular to the first surface 501 of the reflecting and refraction member 500. The refracted ray refracted on the first surface 501 can be incident at an angle α-β' relative to the normal N2 of the second surface 502, and then reflected at the same angle α-β' while advancing toward the first surface 501. Then, the reflected ray advancing toward the first surface 501 can be incident at an angle of 2(α-β)+β' relative to another normal N3 of the first surface 501, and reflected again from the first surface 501. Regarding the path of light incident on the first surface 501 of the reflecting and refraction member 500, it begins at point A outside the reflecting and refraction member 500, is initially refracted and / or reflected (e.g., refracted) at point B on the first surface 501, is then refracted and / or reflected (e.g., reflected) a second time at point C on the second surface 502 to change its direction, and then reaches point D on the first surface 501. Then, depending on the refractive index of the reflecting and refraction member 500 and the refractive index of the external air, some rays may be reflected towards point E and other rays may be refracted at point D on the first surface 501. When the TR condition is met, only light reflection may occur at point D where triple refraction and / or reflection occurs.

[0075] Figure 5 This is a diagram illustrating Snell's law of refraction of light. Figure 6a It is a diagram showing the state of light refraction without total internal reflection according to Snell's law. Figure 6b This is a diagram showing the critical state at which TR occurs according to Snell's law. Figure 6c This is a diagram illustrating the state of total internal reflection of light according to Snell's law. Figures 6a to 6c An embodiment of applying Snell's law to a reflective and refractive element 500 included in a camera module can be shown.

[0076] First, refer to Figure 5 Briefly describe Snell's Law. In two non-conductive media with different refractive indices n1 and n2, when the direction of light incident on point O at the interface is PO, the direction of the refracted light is OQ, and the normal is N, the relationship v1 / v2 = sinθ1 / sinθ2 = n2 / n1 = nλ(1,2) can be established between the medium with refractive index n1 and the medium with refractive index n2. Here, v1 is the speed of light in the medium with n1, and v2 is the speed of light in the medium with n2. nλ(1,2) can be defined as the refractive index or relative refractive index of medium 2 relative to medium 1 at wavelength λ.

[0077] When light travels from a medium with a high refractive index towards a medium with a low refractive index, the TR phenomenon can occur, where all light is reflected and not refracted. (Refer to...) Figures 6a to 6c In embodiments where the TR phenomenon is applied, when light is incident from a medium with a high refractive index (e.g., the reflective and refractive member 500) toward a medium with a low refractive index (e.g., air inside the camera module 100 and outside the reflective and refractive member 500), if the incident angle θ i If the angle is greater than the critical angle θc, then light undergoes total internal reflection from the interface (e.g., Figure 6c And it is not transmitted to a medium with a low refractive index (e.g., the air inside the camera module 100 and outside the reflective and refractive member 500).

[0078] Reference Figures 5 to 6c And refer again Figure 4 According to Snell's law, a ray P incident at point B at angle b is refracted to an angle b'. The angle between the normal N2 and the refracted ray is related to angle a, which is the angle between the first surface 501 and the second surface 502 of the reflecting and refracting components. The light is reflected at point C at an angle a-b' with respect to the normal N2. The reflected ray then incident at point D with an angle of 2(a-b')+b' relative to the normal N3. For TR, the ray incident at point D should have an angle greater than or equal to the critical angle derived from the following formula.

[0079] First, Equation 1 for applying Snell's Law is given below.

[0080] [Formula 1] n i ×sinθ i =n t ×sinθ t Here, n i It can be the refractive index of the reflective and refractive components 500, and n t This can be the refractive index of air within the camera module 100 and outside the reflecting and refractive components 500. Assuming the above equation is under paraxial conditions, sinθ i tanθ can be used i or v i Instead, and sinθ t tanθ can be used t or v t Instead. However, the angle θ can be expressed in radians (rad). Therefore, [Equation 1] can be rearranged into the following [Equation 2].

[0081] [Equation 2] n i ×v i =n t ×vt like Figure 6b As shown, regarding the critical angle θ c Equation 2 can be rearranged into Equation 3 below.

[0082] [Formula 3] sinθ c =n t / n i For the critical angle θ c It can be rearranged again as follows [Equation 4].

[0083] [Formula 4] θ c =sin -1 (n) t / n i ) Due to the refractive index n of the air inside the camera module 100 and outside the reflecting and refractive component 500 t Basically, it's the refractive index of air (n). air =1), therefore [Equation 4] can be rearranged into the following [Equation 5].

[0084] [Formula 5] θ c =sin -1 (1 / n) i ) To satisfy the TR condition, the angle 2(a-b')+b' of the reflected light incident at point D should be greater than θ. c That is, it should satisfy the following [Equation 6].

[0085] [Formula 6] 2(a-b')+b'>θ c [Equation 6] can be expressed as [Equation 7] below.

[0086] [Formula 7] 2(a-b')+b'>sin -1 (1 / n) i ) sin -1 (1 / n) i ) can be expressed as a Taylor expansion using the following [Equation 8].

[0087] [Formula 8] sin -1 (1 / n) i )=n i +1 / 2×(n i 3 / 3)+1 / 2×3 / 4×(n i5 / 5)+… As an optical material used in camera module 100, the refractive index of the reflective and refractive component 500 can be in the range of about 1.5 to about 2.2, depending on the material. For example, when the reflective and refractive component 500 comprises a synthetic resin material, it can have a refractive index of 1.5 to 1.78 or less. In another example, when the reflective and refractive component 500 comprises a glass material, it can have a refractive index of 1.79 to 2.2 or less. Figure 7 The relevant functions shown can be obtained by substituting these refractive indices into Equation 8.

[0088] Figure 7 This indicates 1 / n (e.g., 1 / n) i ) and the arcsine function (e.g., sin -1 (1 / n) i A graph showing the correlation between the two.

[0089] The following [Table 1] shows the results for refractive index n i 1 / n in the range of approximately 1.5 to approximately 2.2 i Values ​​and arcsine functions derived using Taylor series (e.g., sin -1 (1 / n) i When the horizontal axis (x-axis) is 1 / n i And the vertical axis (y-axis) is sin -1 (1 / n) i When ), the data in [Table 1] can be as follows: Figure 7 As shown in the figure.

[0090] [Table 1]

[0091] Connected to Figure 7 The trajectory of the data in [Table 1] plotted on the xy coordinate axis yields a curve similar to a linear function, which can be approximated as y = 1.2397x - 0.0963. Figure 7 The horizontal axis displacement 1 / n i and vertical axis displacement sin -1 (1 / n) i The correlation coefficient function between the two can be expressed as the coefficient of determination R. 2 For example, such as Figure 7 As shown, when the refractive index of the reflecting and refracting member 500 is in the range of about 1.5 to about 2.2, the determination coefficient R 2 The value is 0.9988, confirming a very high positive correlation. Therefore, the sin in [Equation 8] -1 (1 / n) iIt can be expressed as an approximation as shown in [Equation 9] below.

[0092] [Formula 9] sin -1 (1 / n) i )≒C1×(1 / n i )+C2 When the arcsine function of the reciprocal of the refractive index of the reflection and refraction component 500 is expressed as a linear equation of the reciprocal of the reflection and refraction component 500, C1 and C2 can refer to the coefficients and constants of the linear equation, respectively. For example, Figure 7 The result shows that C1 is 1.2397 and C2 is -0.0963.

[0093] Substituting [Equation 9] into [Equation 7] yields the following [Equation 10].

[0094] [Formula 10] 2(a-b')+b'>C1×(1 / n) i )+C2 Rearranging [Equation 10] into a formula for the refractive index of the reflective and refractive component 500, we obtain the following [Equation 11].

[0095] [Equation 11] n i ≥(C1+b) / (2a-C2) The formula for the refractive index required for TR to occur in the reflecting and refractive component 500 can be defined as [Equation 11]. In [Equation 11], the expression “(C1+b) / (2a-C2)” can also be referred to as the total internal reflection function (TRF). [Equation 11] can be referred to as [Equation 1] in the appended claims, and in [Equation 11], “(C1+b) / (2a-C2)” can also be referred to as [Equation 9] in the appended claims. Refer to [Table 1] and / or Figure 7 The related equations, C1 and C2, can be derived as shown in [Equation 12] and [Equation 13] below.

[0096] [Equation 12] 1.1 <C1<1.4 [Equation 13] -0.3 <C2<+0.3 For example, in Figure 7 An example is shown where C1 = 1.2397 and C2 = -0.0963. The upper and lower limits of C1 and C2 in Equation 12 can correspond to the coefficients of determination R of the correlation coefficient function. 2 The upper and lower limits corresponding to a range of 0.90 or higher.

[0097] According to an embodiment, the reason why light refracted at point B is reflected at point C at an angle of a-b' can be, but is not limited to, a reflective material such as a mirror formed on the second surface 502. According to another example, the reflection and refraction member 500 can achieve TR at both point C and point D. According to another embodiment, the reflection and refraction member 500 can achieve TR at other points besides C and D, which are not shown. In this case, the camera module 100 of this disclosure can be referred to as a camera module that achieves multiple total internal reflection (MTR).

[0098] Figure 8 This is a schematic diagram illustrating the relationship between the F-number and the numerical aperture (NA).

[0099] In the reflective and refractive element 500 of this disclosure, only when the incident angle b of the incident ray (e.g., Figure 4 TR can only occur when the angle of incidence (b) is less than or equal to the specified angle. (See reference...) Figure 8 The incident angle b can be expressed as a formula related to the F number (Fno), the main factor of the optical system.

[0100] Reference Figure 8 The F-number is a parameter used to measure the brightness of an optical system and can be expressed as shown in [Equation 14].

[0101] [Formula 14] Fno=f / D Fno represents the F-number, f represents the effective focal length (EFL) of the optical system, and D represents the entrance pupil diameter (EPD).

[0102] Fno can be described as the central luminous flux of the lens, and thus can be expressed by a simple approximation in relation to the aperture as follows [Equation 15].

[0103] [Formula 15] Fno = 1 / (2×NA) NA (numerical aperture) represents the numerical aperture. When using a aperture set at a refractive index of n... t When NA is expressed as the maximum incident angle θ of the light rays entering the lens aperture from the focal point of the lens in the medium, NA can be expressed as the following [Equation 16].

[0104] [Formula 16] NA=n t ×sinθ When the value of θ is small, sinθ can be approximated as θ, so [Equation 16] can be rearranged into the following [Equation 17].

[0105] [Equation 17] NA=n t ×θ Based on Equations 16 and 17, Equation 15 can be rearranged into Equation 18.

[0106] [Formula 18] Fno=1 / (2×n t ×θ) Because the refractive index around the lens is n t The medium is air, therefore the refractive index (n) of air can be used. air =1) replace n t Furthermore, by defining the maximum incident angle θ as the incident angle b corresponding to the reflection and refraction member 500, [Equation 18] can be rearranged into [Equation 19] or [Equation 20] below.

[0107] [Formula 19] Fno = 1 / (2×b) [Formula 20] b = 1 / (2 × Fno) By substituting [Equation 19] or [Equation 20] into [Equation 11], the minimum refractive index of the reflection and refraction member 500 required for TR to occur according to Fno can be derived from [Equation 11].

[0108] Figure 9a This is a schematic diagram showing the light path LP that is incident on the reflective and refractive components and then exits from them. Figure 9b This is an enlarged view showing part A of the reflecting and refracting components. Figure 10 It is a diagram showing the state of light incident on the reflecting and refracting components being reflected back from the first surface. Figure 11 It is a diagram showing the state of total internal reflection of light incident on the reflecting and refracting components from the first surface.

[0109] Reference Figure 9a Reflective and refractive components 500 (e.g., Figure 1 Reflective and refractive components 300 or Figure 2 and Figure 3 The reflective and refractive component 400 includes a first surface 501 (e.g., Figure 1 First surface 301 or Figure 2 and Figure 3 First surface 401), second surface 502 (e.g., Figure 1 The second surface 302 or Figure 2 and Figure 3 The second surface 402), the third surface 503 (for example, Figure 1 The fifth surface 305 or Figure 2 and Figure 3 The third surface 403) and the fourth surface 504 (e.g., Figure 1 The sixth surface 306 or Figure 2 and Figure 3 The fourth surface 404).

[0110] Reference Figure 9a and Figure 9b This diagram illustrates incident light P perpendicular to the first surface 501 of the reflecting and refraction member 500, with outgoing light Q being emitted. In this case, the requirement for TR when incident light P is incident can be determined by the angle between the first surface 501 and the second surface 502 (hereinafter referred to as "angle α"). Conversely, when incident light P is incident at an angle relative to the first surface 501, as... Figure 10 and Figure 11 As shown, the TR requirement can be determined based on the included angle α of the reflecting and refraction members 500 and the incident angle b relative to the normal N of the first surface 501.

[0111] Reference Figure 10 and Figure 11 The TR requirement will now be described in detail based on the incident angle b of the light incident on the reflecting and refracting member 500 and the included angle α of the reflecting and refracting member 500.

[0112] Fno can be pre-specified according to the optical performance (or specifications) required for camera module 100. According to an embodiment, camera module 100 can be provided in which brightness increases as Fno decreases and decreases as Fno increases.

[0113] For example, when Fno is 2.8, the corresponding angle of incidence b, calculated in degrees rather than radians (rad), is 10.23°. In this case, the minimum refractive index for each embodiment of the included angle α of the reflecting and refracting members 500 can be shown in [Table 2] below.

[0114] Various embodiments of the included angle α of the reflective and refractive member 500 of this disclosure can be given as shown in [Equation 21] below. Various embodiments of light incident on the reflective and refractive member 500 can be given as shown in [Equation 22] below.

[0115] [Equation 21] 10 <a<50 [Equation 22] b<45 For example, when the included angle α in [Equation 21] is greater than or equal to 50°, the height of the reflecting and refractive component 500 is large, which may make the overall thickness of the camera module too large. For example, when the included angle α in [Equation 21] is less than or equal to 10°, it may be difficult to manufacture the reflecting and refractive component 500, and the risk of damage may be high. Regarding Equation 22, when the reflecting and refractive component 500 is included in the camera module, the incident angle b of light passing through, for example, the lens assembly and incident on the reflecting and refractive component 500 can be set to less than 45 degrees.

[0116] [Table 2]

[0117] According to [Table 2], it can be determined that the minimum refractive index at which TR occurs gradually increases as the angle between the reflecting and refracting members decreases. For example, as shown in [Table 2], when the incident angle b according to Fno is 10.23° and the angle a between the reflecting and refracting members 500 is 45 degrees, the minimum refractive index of the medium of the reflecting and refracting members 500 required to achieve TR within the reflecting and refracting members 500 is 0.85. That is, under the 45-degree condition, the reflecting and refracting members 500 should have a refractive index of at least 0.85 to satisfy the TR condition. As described above, the reflecting and refracting members 500 of this disclosure can be formed using a medium with a refractive index between about 1.5 and about 2.2. Therefore, according to an embodiment of this disclosure, when the incident angle b according to Fno is 10.23° and the angle a between the reflecting and refracting members 500 is 45 degrees, TR can occur in the optical path LP of the light incident on the reflecting and refracting members 500.

[0118] Figures 9a to 11 The embodiment illustrates, for example, a case where the included angle α of the reflective and refractive member 500 is 20°. When the included angle α is 20°, and the incident angle b according to Fno is 10.23°, the minimum refractive index required for the medium to achieve TR can be 1.79. Therefore, it may be difficult to meet the TR requirement with materials such as synthetic resins that typically have a refractive index of 1.78 or less. Figure 10 An embodiment is shown where the included angle α of the reflecting and refractive element 500 is 20°, the incident angle b according to Fno is 10.23°, and the refractive index of the reflecting and refractive element 500 is 1.77. (Refer to...) Figure 10 When the reflective and refractive component 500 does not meet the minimum refractive index, the optical path LP may include outgoing light Q emitted to the outside through the first surface 501.

[0119] Figure 11 The invention relates to a reflective and refractive member 500' comprising a first surface 501' and a second surface 502', and illustrates an embodiment where the refractive index of the reflective and refractive member 500' is 1.79, which is slightly greater than […]. Figure 10 The refractive index of the reflective and refractive components 500 in the reference. Figure 11 When the reflective and refractive component 500' satisfies the minimum refractive index, the light path LP can be totally reflected on the first surface 501'.

[0120] For example, regarding reflective and refractive elements 500 and 500' with a predetermined refractive index, when the angle of incidence b of light P incident on reflective and refractive elements 500 and 500' is greater than a predetermined value, or additionally or optionally, when the included angle α of reflective and refractive elements 500 and 500' is too small, TR may not occur within the reflective and refractive element 500 (or on the first surface 501), such as Figure 10 As shown in the image.

[0121] According to an embodiment, the reflective and refractive component 500 may have an Abbe number that satisfies the following [Equation 23].

[0122] [Equation 23] 25 <Vd_1<95 Vd_1 can be a reflective and refractive component 500 (e.g., Figure 1 The reflective and refractive components 300 or Figure 2 and Figure 3 The Abbe number of the reflecting and refractive components (400) in the structure. For example, when... Figure 1 In embodiments where the reflection and refraction member 300 includes multiple reflection and refraction members 300-1 and 300-2, the Abbe number can refer to the Abbe number of the reflection and refraction member 300-2 closest to the image side I. When the reflection and refraction member 500 is disposed between the lens assembly and the imaging plane, it may be affected by aberrations such as field curvature and chromatic aberration. For example, when the Abbe number Vd_1 of the reflection and refraction member 500 is 95 or higher, it is advantageous to correct chromatic aberration. However, using a reflection and refraction member 500 made of a relatively soft material makes the assembly and manufacturing process difficult to manage. Conversely, when the Abbe number Vd_1 is less than 25, a reflection and refraction member 500 made of a hard material can be used, but proper chromatic aberration correction may be difficult.

[0123] Reference Figures 12 to 14c The requirements for TR based on the included angle α and incident angle b of the reflecting and refracting components 500 will be described in more detail below.

[0124] Figure 12 It is a diagram showing the state of total internal reflection and emission of light incident on a reflective and refractive member having a first included angle and a first refractive index. Figure 13 It is a diagram showing the state of light incident on a reflective and refractive member having a first included angle and a second refractive index, exiting from the first surface and returning.

[0125] Reference Figure 12 and Figure 13 Reflective and refractive components 600 and 600' (e.g., Figure 1 300 reflective and refractive components Figure 2 and Figure 3 Reflective and refractive components 400 or Figure 4 and Figures 9a to 11 The reflective and refractive components 500 and 500' may include LP first surfaces 601 and 601' (e.g., Figure 1 The first surface 301 of the reflective and refractive component 300 Figure 2 and Figure 3 The first surface 401 of the reflective and refractive component 400 or Figure 4 and Figures 9a to 11 The first surface 501 of the reflective and refractive components 500 and 500', and the second surfaces 602 and 602' (e.g., Figure 1 The second surface 302 of the reflective and refractive component 300 Figure 2 and Figure 3 The second surface 402 of the reflective and refractive component 400 or Figure 4 and Figures 9a to 11 The second surface 502 of the reflective and refractive components 500 and 500', and the third surface 603 and 603' (e.g., Figure 1 The fifth surface 305 of the reflective and refractive component 300 Figure 2 and Figure 3 The third surface 403 of the reflective and refractive component 400 or Figure 4 and Figures 9a to 11 The third surface 503 of the reflecting and refractive components 500 and 500' and the fourth surfaces 604 and 604' (e.g., Figure 1 The sixth surface 306 of the reflective and refractive component 300 Figure 2 and Figure 3 The fourth surface 404 of the reflective and refractive component 400 or Figure 4 and Figures 9a to 11 The fourth surface 504 of the reflective and refractive component 500.

[0126] For example, in Figure 12 and Figure 13 In one embodiment, the first included angle can be 30°. However, this can be varied depending on the embodiment. Figure 12 and Figure 13 In this embodiment, when the Abbe number is 40 and the required Fno is 2.8, the TRF can be 1.24. In this case, Figure 12 The refractive index n of the reflecting and refracting component 600 can be shown. i The optical path LP at 1.7 is... Figure 13 The refractive index n of the reflecting and refracting component 600 can be shown. i The optical path LP is at 1.15. (Refer to...) Figure 12 and Figure 13 It can be determined that TR occurs when the reflecting and refractive component 600 has a refractive index greater than that of the TRF (e.g., Figure 12), and TR does not occur when it has a refractive index less than TRF (e.g., Figure 13 ).

[0127] Figure 14a It is a diagram showing the state in which light incident at a first angle on a reflective and refractive element having a second included angle and a third refractive index is totally reflected and emitted. Figure 14b It is a diagram showing the state of total internal reflection and emission of light incident at a second angle onto a reflective and refractive member having a second included angle and a third refractive index. Figure 14c It is a diagram showing the state of light incident at a second angle on a reflective and refractive member having a second included angle and a fourth refractive index, exiting and returning through the first surface.

[0128] Reference Figures 14a to 14c Reflective and refractive components 700 and 700' (e.g., Figure 1 300 reflective and refractive components Figure 2 and Figure 3 Reflective and refractive components 400 Figure 4 and Figures 9a to 11 Reflective and refractive components 500 and 500' or Figure 12 and Figure 13 The reflective and refractive components 600 and 600' may include first surfaces 701 and 701' (e.g., Figure 1 First surface 301, Figure 2 and Figure 3 First surface 401, Figure 4 and Figures 9a to 11 The first surfaces 501 and 501' or Figure 12 and Figure 13 First surfaces 601 and 601'), second surfaces 702 and 702' (e.g., Figure 1 The second surface 302, Figure 2 and Figure 3 The second surface 402, Figure 4 and Figures 9a to 11 The second surface 502 or Figure 12 and Figure 13 The second surfaces 602 and 602'), and the third surfaces 703 and 703' (e.g., Figure 1 The fifth surface 305, Figure 2 and Figure 3 The third surface 403, Figure 4 and Figures 9a to 11 The third surface 503 or Figure 12 and Figure 13 The third surfaces 603 and 603') and the fourth surfaces 704 and 704' (e.g., Figure 1 The sixth surface 306 Figure 2 and Figure 3The fourth surface 404 Figure 4 and Figures 9a to 11 The fourth surface 504 or Figure 12 and Figure 13 The fourth surface 604 and 604').

[0129] For example, in Figures 14a to 14c In some embodiments, the included angle α of the reflecting and refractive components 700 can be represented as a second included angle α'. For example, in Figures 14a to 14c In one embodiment, the second included angle α' can be 25°. However, this can be varied in various ways depending on the embodiment. Figures 14a to 14c In this embodiment, when the Abbe number is 30 and the required Fno is 2.8, the TRF can be 1.46. In this case, Figure 14a and Figure 14b The refractive index n can be shown. i The optical path LP in the 700 reflective and refractive component is 1.75. Figure 14c The refractive index n can be shown. i The optical path LP in the 700' reflective and refractive component is 1.35. (Refer to...) Figure 14a and Figure 14b It can be determined that when the refractive index n of the reflecting and refracting component 700... i When the value is 1.75, TR occurs not only when the incident light P is perpendicular to the first surface 701, but also when the incident light P is incident at an angle. Conversely, referring to... Figure 14b and Figure 14c For an oblique incident light P, it can be confirmed that TR occurs when the reflecting and refracting components 700 and 700' have a refractive index greater than that of the TRF (e.g., Figure 14b The reflective and refractive components 700), and TRF does not occur when they have a refractive index less than that of TRF (e.g., Figure 14c (700' of the reflection and refraction components).

[0130] Figure 15 It is a perspective view showing the reflective and refractive components, including the effective incident area. Figure 16a It is a diagram showing the travel paths of light passing through the ineffective incident region and light passing through the effective incident region. Figure 16b It is a diagram showing the path of light as it passes through the effective incident area. Figure 16c This is a diagram showing reflective and refractive components including a cut surface.

[0131] Reference Figures 15 to 16c Reflective and refractive components 800 (e.g., Figure 1 300 reflective and refractive components Figure 2 and Figure 3 Reflective and refractive components 400 Figure 4 and Figures 9a to 11 Reflective and refractive components 500 and 500' Figure 12 and Figure 13 Reflective and refractive components 600 and 600' or Figures 14a to 14c The reflective and refractive components 700 and 700' may include a first surface 801 (e.g., Figure 1 First surface 301, Figure 2 and Figure 3 First surface 401, Figure 4 and Figures 9a to 11 First surfaces 501 and 501' Figure 12 and Figure 13 The first surfaces 601 and 601' or Figures 14a to 14c First surfaces 701 and 701'), second surface 802 (e.g., Figure 1 The second surface 302, Figure 2 and Figure 3 The second surface 402, Figure 4 and Figures 9a to 11 The second surface 502, Figure 12 and Figure 13 The second surfaces 602 and 602' or Figures 14a to 14c The second surface 702 and 702'), and the third surface 803 (e.g., Figure 1 The fifth surface 305, Figure 2 and Figure 3 The third surface 403, Figure 4 and Figures 9a to 11 The third surface 503, Figure 12 and Figure 13 The third surface 603 and 603' or Figures 14a to 14c The third surface 703 and 703') and the fourth surface 804 (e.g., Figure 1 The sixth surface 306 Figure 2 and Figure 3 The fourth surface 404 Figure 4 and Figures 9a to 11 The fourth surface 504 Figure 12 and Figure 13 The fourth surface 604 and 604' or Figures 14a to 14c The fourth surface 704 and 704').

[0132] Reference Figure 15 According to an embodiment, the first surface 801 may include a first region 8011 and a second region 8012. The first region 8011 may be the incident region for light. As mentioned above... Figure 2 and Figure 3As described in the embodiment, when light passing through the first region 8011 is reflected from the second surface 802 and reaches the first region 8011 again, the light can even be reflected in the first region 8011.

[0133] The first region 8011 can be set in relation to the lens assembly (e.g., Figures 1 to 3 The second region 8012 is located at a position corresponding to the lens assembly 200 and has a circular shape with a specific diameter. According to an embodiment, the second region 8012 can be the remaining area of ​​the first surface 801 other than the first region 8011. The second region 8012 may have a shape surrounding the first region 8011. According to an embodiment, the first region 8011 may be located at a predetermined distance spaced from the end (e.g., the vertex of an edge) of the first surface 801. According to an embodiment, the first region 8011 may be referred to as the effective incident area (EIA). (See also...) Figure 16a and Figure 16b The EIA will be described in detail below.

[0134] Reference Figure 16a The light is shown to be incident at two points through the first surface 801. In the first optical path LP1, which is the path of light incident on the second region 8012 other than the first region 8011 which is EIA, the light may be incident along the path between points A1 and B1 and exit through points C1, D1, and E1. In the second optical path LP2, which is the path of light incident on the first region 8011 which is EIA, the light may be incident along the path between points A2 and B2 and exit through points C2, D2, and E2.

[0135] The first optical path LP1 may have a path in which light is incident through a first surface 801, then reflected from a second surface 802 (first reflection), reflected again from the first surface 801 (second reflection), and then reflected again from the second surface 802 (third reflection). For example, in... Figure 16a In the first optical path LP1 shown, when light exits through the fourth surface 804, it can exit in an oblique direction rather than perpendicular to the fourth surface 804 in an optical path having a path of secondary reflection from the first surface 801 and then tertiary reflection from the second surface 802 (hereinafter referred to as the "path of tertiary reflection on the second surface 802"). Regarding the angle of the optical path when light is reflected again from the first surface 801 and then again from the second surface 802 in the first optical path LP1, the angle θ at point D1 is... D1 Formed as an angle θ with respect to point E1 E1 Different. The paths of the third reflection on the second surface 802 can be formed irregularly.

[0136] The second optical path LP2 may have a path in which light is incident through a first surface 801, then reflected from a second surface 802 (primary reflection), reflected again from the first surface 801 (secondary reflection), and then reflected again from a fourth surface 802 (tertiary reflection) (hereinafter referred to as the "path of tertiary reflection on the fourth surface 804"). For example, in... Figure 16a In the second optical path LP2 shown, when light exits through the fourth surface 804, it can exit in a direction perpendicular to the fourth surface 804 (hereinafter referred to as the "path of triple reflection on the fourth surface 804"), which has a path in which light is reflected twice from the first surface 801 and then three times from the fourth surface 804. Regarding the angle of the optical path when light is reflected again from the first surface 801 and then from the fourth surface 804 in the second optical path LP2, the angle θ at point D2 is... D2 It can be formed as an angle θ with respect to point E2. E2 The angle at which light is reflected again from the first surface 801 is the same as the angle at which light is subsequently reflected again. Figure 16a In this embodiment, the second optical path LP2 can be regular compared to the first optical path LP1. According to the embodiment, when designing the reflective and refractive components 800, the second optical path LP2 with such a regular path can be configured as a normal optical path. The camera module can be optimally designed for the arrangement and / or shape of the reflective and refractive components to enhance optical performance based on the normal optical path.

[0137] According to an embodiment, in the reflective and refractive member 800 of this disclosure, the first light-incident region 8011 can be configured as EIA, having an optical path in which light is reflected twice from the first surface 801 and then three times from the fourth surface 804. Therefore, all light incident on the first region 8011 can be included in a normal optical path, which is a regular optical path. According to an embodiment, the first region 8011 may have a first end p1 at a position spaced apart from the vertices between the first surface 801 and the second surface 802 by a first distance L1, and a second end p2 at a position spaced apart from the vertices between the first surface 801 and the second surface 802 by a second distance L2. To ensure that all optical paths of light incident on the first region 8011 are included in a regular normal optical path, the position of the first end p1 can be set to a position that allows the light incident on the first region 8011 to undergo a three-fold reflection from the fourth surface 804. Optionally, the position of the first end p1 can be set to a position that allows the light incident on the first region 8011 to undergo a path where the angles of the second and third reflections are the same. According to an embodiment, the position of the second end p2 can be set as an imaginary line drawn perpendicular to the first surface 801 from the vertex between the second surface 802 and the fourth surface 804 (e.g., Figure 16a The position where the dotted line intersects.

[0138] According to an embodiment, the second region 8012 may include the region of the first surface 801 other than the first region 8011. (See also...) Figure 16a The second region 8012 may include a second-1 region 8012a near the vertex between the first surface 801 and the second surface 802 relative to the first region 8011. The second region 8012 may also include a second-2 region 8012b located on the opposite side of the second-1 region 8012a relative to the first region 8011. According to an embodiment, even if light is incident on the second-1 region 8012a, an irregular light path can be formed. According to an embodiment, the portion of the reflective and refractive member 500 corresponding to the second-1 region 8012a can be processed (e.g., cut). An example of a reflective and refractive member 500 having a processed portion is shown in... Figure 16c As shown in the image.

[0139] Reference Figure 16b Similar to Figure 16a In the embodiments, Figure 16b In this embodiment, light is also shown to be incident at two points through the first surface 801. In the first optical path LP1, which is the path of light incident on the first region 8011, which is EIA, light may be incident along the path between points A1 and B1 and exit through points C1, D1, and E1. In the second optical path LP2, which is the path of light incident on the first region 8011, which is EIA, light may be incident along the path between points A2 and B2 and exit through points C2, D2, and E2. Figure 16b In this embodiment, light is shown to be incident through a first region 8011, which is the EIA of both the first optical path LP1 and the second optical path LP2. In this case, it can be confirmed that the angle θ at point D1 in the first optical path LP1 is... D1 Set as the angle θ at point E1 E1 Similarly, the angle θ at point D2 in the second optical path LP2 D2 Set to the angle θ at point E2 E2 same.

[0140] Summarize Figure 16a and Figure 16bIn embodiments of this disclosure, the reflecting and refraction member 800 may include regular and irregular paths of light incident on the reflecting and refraction member 800. The incident region of light leading to a regular path in the reflecting and refraction member 800 may be designated as EIA. According to an embodiment, EIA may be set as a first region 8011. The first region 8011 may be surrounded by a second region 8012. Whether light incident on the reflecting and refraction member 800 has a regular light path can be determined based on light incident perpendicular to the first surface 801. According to an embodiment, the reflecting and refraction member 800 may satisfy the following [Equation 24].

[0141] [Equation 24] p1≤EIA EIA can represent the EIA of light incident on the reflective and refractive member 800 forming a regular optical path. p1 can be the first end of the first region 8011 corresponding to the EIA. According to an embodiment, p1 can correspond to the point closest to the vertex between the first surface 801 and the second surface 802, wherein the light incident on the reflective and refractive member 800 has a regular optical path. For example, when the EIA of the light incident on the member 800 is set to be less than p1, the light incident on the reflective and refractive member 800 may have an irregular optical path and / or may emit oblique light from the exiting surface of the reflective and refractive member 800.

[0142] According to an embodiment, the reflective and refractive component 800 may satisfy the following [Equation 25].

[0143] [Equation 25] p1≤EIA≤p2 p2 can be the second end of the first region 8011 corresponding to EIA. According to an embodiment, p2 can be set as an imaginary line drawn perpendicular to the first surface 801 from a vertex between the second surface 802 and the fourth surface 804 (e.g., Figure 16a The position where the dotted line intersects.

[0144] Various embodiments of the included angle α of the reflective and refractive member 800 of this disclosure can be given as shown in [Equation 26] below.

[0145] [Equation 26] 10 <a<30 For example, when the included angle α in [Equation 26] is greater than or equal to 30°, the angles of secondary and tertiary reflections of light incident on the first region 8011 of the reflecting and refraction member 800 may be formed differently. For example, when the included angle α in [Equation 26] is less than or equal to 10°, it may be difficult to manufacture the reflecting and refraction member 800, and the risk of damage may be high.

[0146] Reference Figure 16cA portion of the reflective and refractive member 500 can be processed (e.g., cut). By processing (e.g., cutting) a portion of the reflective and refractive member 500, the size of the reflective and refractive member 500 can be reduced, or the possibility of damage during processing can be reduced. According to an embodiment, the reflective and refractive member 500 may include a plurality of cut surfaces. According to an embodiment, the reflective and refractive member 500 may include a cut surface (e.g., a first cut surface 805) formed by removing the vertex portion between a first surface 801 and a second surface 802. For the same effect, the reflective and refractive member 500 may also include a cut surface (e.g., a second cut surface 806) formed by removing the vertex portion between a third surface 803 and a fourth surface 804.

[0147] According to an embodiment, light incident on the reflective and refractive member can be prevented from leaking to the outside by masking or mirror coating at least a portion of the first surface 801, at least a portion of the second surface 802, at least a portion of the third surface 803, at least a portion of the fourth surface 804, and / or cut surfaces (e.g., the first cut surface 805 and / or the second cut surface 806).

[0148] Figure 17 This illustrates an electronic device 1701 in a network environment 1700 according to various embodiments (e.g., Figures 1 to 3 A block diagram of a camera module 100 (e.g., an optical device).

[0149] Reference Figure 17In network environment 1700, electronic device 1701 (e.g., optical device) can communicate with electronic device 1702 via a first network 1798 (e.g., short-range wireless communication network), or with at least one of electronic device 1704 or server 1708 via a second network 1799 (e.g., long-range wireless communication network). According to an embodiment, electronic device 1701 can communicate with electronic device 1704 via server 1708. According to an embodiment, electronic device 1701 may include a processor 1720, memory 1730, input module 1750, sound output module 1755, display module 1760, audio module 1770, sensor module 1776, interface 1777, connection terminal 1778, haptic module 1779, camera module 1780, power management module 1788, battery 1789, communication module 1790, subscriber identification module (SIM) 1796, or antenna module 1797. In some embodiments, at least one of the above-described components (e.g., display module 1760 or camera module 1780) may be omitted from electronic device 1701, or one or more other components may be added to electronic device 1701. In some embodiments, some of the above-described components (e.g., sensor module 1776, camera module 1780, or antenna module 1797) may be implemented as a single component (e.g., display module 1760).

[0150] Processor 1720 may run software (e.g., program 1740) to control at least one other component (e.g., hardware or software component) of electronic device 1701 in conjunction with processor 1720, and may perform various data processing or calculations. According to embodiments, as at least part of the data processing or calculations, processor 1720 may store commands or data received from another component (e.g., sensor module 1776 or communication module 1790) in volatile memory 1732, process the commands or data stored in volatile memory 1732, and store the resulting data in non-volatile memory 1734. According to embodiments, processor 1720 may include a main processor 1721 (e.g., central processing unit (CPU) or application processor (AP)) or a coprocessor 1723 (e.g., graphics processing unit (GPU), neural processing unit (NPU), image signal processor (ISP), sensor central processor, or communication processor (CP)) that is operationally independent of or combined with the main processor 1721. For example, when electronic device 1701 includes a main processor 1721 and a coprocessor 1723, the coprocessor 1723 may be adapted to consume less power than the main processor 1721, or adapted to be dedicated to a specific function. The coprocessor 1723 may be implemented separately from the main processor 1721, or may be implemented as part of the main processor 1721.

[0151] When the main processor 1721 is inactive (e.g., in sleep mode), the coprocessor 1723 (not the main processor 1721) can control at least some of the functions or states associated with at least one component of the electronic device 1701 (e.g., display module 1760, sensor module 1776, or communication module 1790). Alternatively, when the main processor 1721 is active (e.g., running an application), the coprocessor 1723 can work with the main processor 1721 to control at least some of the functions or states associated with at least one component of the electronic device 1701 (e.g., display module 1760, sensor module 1776, or communication module 1790). According to embodiments, the coprocessor 1723 (e.g., an image signal processor or a communication processor) can be implemented as part of another component (e.g., camera module 1780 or communication module 1790) functionally associated with the coprocessor 1723. According to embodiments, the coprocessor 1723 (e.g., a neural processing unit) can include hardware architectures dedicated to artificial intelligence model processing. Artificial intelligence models can be generated through machine learning. For example, such learning can be performed via electronic device 1701, through which the artificial intelligence model is executed, or via a separate server (e.g., server 1708). Learning algorithms may include, but are not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include multiple layers of artificial neural networks. The artificial neural networks may be, but are not limited to, deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted Boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), deep Q-networks, or combinations of two or more of these. Additionally or optionally, the artificial intelligence model may include software structures in addition to hardware structures.

[0152] Memory 1730 may store various data used by at least one component of electronic device 1701 (e.g., processor 1720 or sensor module 1776). The various data may include, for example, software (e.g., program 1740) and input or output data for commands associated with it. Memory 1730 may include volatile memory 1732 or non-volatile memory 1734.

[0153] The program 1740 may be stored as software in the memory 1730, and the program 1740 may include, for example, an operating system (OS) 1742, middleware 1744, or application 1746.

[0154] Input module 1750 can receive commands or data from outside electronic device 1701 (e.g., a user) that will be used by other components of electronic device 1701 (e.g., processor 1720). Input module 1750 may include, for example, a microphone, mouse, keyboard, keys (e.g., buttons), or digital pen (e.g., stylus).

[0155] The sound output module 1755 can output sound signals to the outside of the electronic device 1701. The sound output module 1755 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. According to an embodiment, the receiver may be implemented separately from the speaker or as part of the speaker.

[0156] Display module 1760 can visually provide information to the outside of electronic device 1701 (e.g., to a user). Display module 1760 may include, for example, a display, a holographic device, or a projector, and control circuitry for controlling a respective one of the display, holographic device, and projector. According to an embodiment, display module 1760 may include a touch sensor adapted to detect touch or a pressure sensor adapted to measure the intensity of the force caused by touch.

[0157] The audio module 1770 can convert sound into electrical signals and vice versa. According to an embodiment, the audio module 1770 can obtain sound via the input module 1750, or output sound via the sound output module 1755 or via headphones of an external electronic device (e.g., electronic device 1702) that is directly (e.g., wired) or wirelessly connected to the electronic device 1701.

[0158] Sensor module 1776 can detect the operating state of electronic device 1701 (e.g., power or temperature) or the environmental state outside electronic device 1701 (e.g., user state), and then generate an electrical signal or data value corresponding to the detected state. According to embodiments, sensor module 1776 may include, for example, a gesture sensor, gyroscope sensor, atmospheric pressure sensor, magnetic sensor, accelerometer, grip sensor, proximity sensor, color sensor, infrared (IR) sensor, biometric sensor, temperature sensor, humidity sensor, or illuminance sensor.

[0159] Interface 1777 may support one or more specific protocols used to enable electronic device 1701 to be directly (e.g., wired) or wirelessly coupled to external electronic device (e.g., electronic device 1702). According to embodiments, interface 1777 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital Card (SD) interface, or an audio interface.

[0160] Connection terminal 1778 may include a connector, through which electronic device 1701 can be physically connected to an external electronic device (e.g., electronic device 1702). According to embodiments, connection terminal 1778 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0161] The haptic module 1779 can convert electrical signals into mechanical stimuli (e.g., vibration or motion) or electrical stimuli that can be recognized by a user through his touch or kinesthesia. According to an embodiment, the haptic module 1779 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0162] Camera module 1780 can capture still or moving images. According to an embodiment, camera module 1780 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0163] The power management module 1788 manages the power supply to the electronic device 1701. According to an embodiment, the power management module 1788 may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

[0164] Battery 1789 can power at least one component of electronic device 1701. According to an embodiment, battery 1789 may include, for example, a non-rechargeable primary battery, a rechargeable rechargeable battery, or a fuel cell.

[0165] Communication module 1790 can support the establishment of a direct (e.g., wired) or wireless communication channel between electronic device 1701 and external electronic devices (e.g., electronic device 1702, electronic device 1704, or server 1708), and perform communication via the established communication channel. Communication module 1790 may include one or more communication processors capable of operating independently of processor 1720 (e.g., application processor) and supporting direct (e.g., wired) or wireless communication. According to embodiments, communication module 1790 may include wireless communication module 1792 (e.g., cellular communication module, short-range wireless communication module, or Global Navigation Satellite System (GNSS) communication module) or wired communication module 1794 (e.g., local area network (LAN) communication module or power line communication (PLC) module). One of these communication modules can communicate with an external electronic device via a first network 1798 (e.g., a short-range communication network such as Bluetooth, Wi-Fi Direct, or Infrared Data Association (IrDA)) or a second network 1799 (e.g., a long-range communication network such as a traditional cellular network, 5G network, next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip) or as multiple components separate from each other (e.g., multiple chips). The wireless communication module 1792 can use user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 1796 to identify and verify the electronic device 1701 in the communication network (such as the first network 1798 or the second network 1799).

[0166] Wireless communication module 1792 can support 5G networks following 4G networks and next-generation communication technologies (such as new radio (NR) access technologies). NR access technologies can support enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), or ultra-reliable low-latency communication (URLLC). Wireless communication module 1792 can support high-frequency bands (e.g., millimeter-wave bands) to achieve, for example, high data transmission rates. Wireless communication module 1792 can support various technologies used to ensure performance in high-frequency bands, such as, for example, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. Wireless communication module 1792 can support various requirements specified in electronic device 1701, external electronic device (e.g., electronic device 1704), or network system (e.g., second network 1799). According to an embodiment, the wireless communication module 1792 may support peak data rates (e.g., 20 Gbps or greater) for implementing eMBB, lost coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip) for implementing URLLC.

[0167] Antenna module 1797 can transmit or receive signals or power to or from the exterior of electronic device 1701 (e.g., external electronic device). According to an embodiment, antenna module 1797 may include an antenna comprising a radiating element formed of a conductive material or conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, antenna module 1797 may include multiple antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network (such as a first network 1798 or a second network 1799) can be selected from the multiple antennas by, for example, communication module 1790 (e.g., wireless communication module 1792). Signals or power can then be transmitted or received between communication module 1790 and the external electronic device via the selected at least one antenna. According to an embodiment, additional components besides the radiating element (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of antenna module 1797.

[0168] According to an embodiment, antenna module 1797 can form a millimeter-wave antenna module. According to an embodiment, the millimeter-wave antenna module may include a printed circuit board, an RFIC, and multiple antennas (e.g., an array antenna), wherein the RFIC is disposed on a first surface (e.g., the bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high-frequency band (e.g., a millimeter-wave band), and the multiple antennas are disposed on a second surface (e.g., the top surface or a side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals in the specified high-frequency band.

[0169] At least some of the aforementioned components can be interconnected and communicate signals (e.g., commands or data) between them via an inter-peripheral communication scheme (e.g., bus, general purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industrial processor interface (MIPI)).

[0170] According to an embodiment, commands or data can be sent or received between electronic device 1701 and external electronic device 1704 via server 1708 connected to a second network 1799. Each of electronic device 1702 or electronic device 1704 can be a device of the same type as electronic device 1701, or a device of a different type. According to an embodiment, all or some operations that would run in electronic device 1701 can run in one or more of external electronic devices 1702, 1704, or 1708. For example, if electronic device 1701 is required to automatically perform a function or service, or is required to perform a function or service in response to a request from a user or another device, electronic device 1701 may request the one or more external electronic devices to perform at least a portion of the function or service instead of running the function or service, or electronic device 1701 may request the one or more external electronic devices to perform at least a portion of the function or service in addition to running the function or service. Upon receiving the request, the one or more external electronic devices may perform at least a portion of the requested function or service, or perform additional functions or services related to the request, and transmit the result of the execution to electronic device 1701. Electronic device 1701 may provide the result as at least a partial response to the request, with or without further processing of the result. For this purpose, technologies such as cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing may be used.

[0171] Electronic device 1701 can use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment, external electronic device 1704 may include an Internet of Things (IoT) device. Server 1708 may be an intelligent server using machine learning and / or neural networks. According to embodiments, external electronic device 1704 or server 1708 may be included in a second network 1799. Electronic device 1701 can be applied to intelligent services (e.g., smart homes, smart cities, smart cars, or healthcare) based on 5G communication technology or IoT-related technologies.

[0172] Figure 18 This is a block diagram 1800 showing a camera module 1880 according to various embodiments.

[0173] Reference Figure 18 Camera module 1880 (e.g., Figures 1 to 3 Camera module 100 and / or Figure 17 The camera module 1780 may include a lens assembly 1810 (e.g., Figures 1 to 3 Lens assembly 200), flash 1820, image sensor 1830 (e.g., IS), image stabilizer 1840, memory 1850 (e.g., buffer memory) Figure 17 The memory 1730 or image signal processor 1860. Lens assembly 1810 can capture light emitted or reflected from an object whose image is to be captured. Lens assembly 1810 may include one or more lenses. According to an embodiment, camera module 1880 may include multiple lens assemblies 1810. In this case, camera module 1880 may form, for example, a dual-camera, a 360-degree camera, or a spherical camera. Some of the multiple lens assemblies 1810 may have the same lens properties (e.g., angle of view, focal length, autofocus, F-number (Fno), or optical zoom), or at least one lens assembly may have one or more lens properties different from those of the other lens assemblies. Lens assembly 1810 may include, for example, a wide-angle lens or a telephoto lens.

[0174] Flash 1820 emits light to enhance light reflected from an object. According to embodiments, flash 1820 may include one or more light-emitting diodes (LEDs) (e.g., red-green-blue (RGB) LEDs, white LEDs, infrared (IR) LEDs, or ultraviolet (UV) LEDs) or xenon lamps. Image sensor 1830 acquires an image corresponding to an object by converting light emitted or reflected from the object and transmitted through lens assembly 1810 into an electrical signal. According to embodiments, image sensor 1830 may include, for example, one image sensor selected from image sensors with different properties (such as an RGB sensor, a black-and-white (BW) sensor, an IR sensor, or a UV sensor), multiple image sensors having the same properties, or multiple image sensors with different properties. Each image sensor included in image sensor 1830 may be implemented using, for example, a charge-coupled device (CCD) sensor or a complementary metal-oxide-semiconductor (CMOS) sensor.

[0175] Image stabilizer 1840 may, in response to movement of camera module 1880 or electronics 1701 including camera module 1880, move image sensor 1830 or at least one lens included in lens assembly 1810 in a specific direction, or control operable properties of image sensor 1830 (e.g., adjust readout timing). This can compensate for at least a portion of the negative impact (e.g., image blur) on the image being captured due to such movement. According to embodiments, image stabilizer 1840 may use a gyroscope sensor (not shown) or accelerometer sensor (not shown) disposed inside or outside camera module 1880 to sense such movement of camera module 1880 or electronics 1701. According to embodiments, image stabilizer 1840 may be implemented as, for example, an optical image stabilizer. Memory 1850 may at least temporarily store at least a portion of the image acquired via image sensor 1830 for subsequent image processing tasks. For example, if image capture is delayed due to shutter lag or multiple images are captured quickly, the acquired original image (e.g., a Bayer pattern image, a high-resolution image) can be stored in memory 1850, and its corresponding copy image (e.g., a low-resolution image) can be previewed via display module 1760. Then, if specified conditions are met (e.g., by user input or system command), at least a portion of the original image stored in memory 1850 can be acquired and processed by, for example, image signal processor 1860. According to embodiments, memory 1850 can be configured as at least a portion of memory 1730, or memory 1850 can be configured as a separate memory operating independently of memory 1730.

[0176] Image signal processor 1860 can perform one or more image processing operations on an image acquired via image sensor 1830 or an image stored in memory 1850. The one or more image processing operations may include, for example, depth map generation, 3D modeling, panorama generation, feature point extraction, image compositing, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or optionally, image signal processor 1860 can perform control (e.g., exposure time control or readout timing control) on at least one component included in camera module 1880 (e.g., image sensor 1830). The image processed by image signal processor 1860 may be stored back in memory 1850 for further processing, or the image may be provided to external components outside camera module 1880 (e.g., memory 1730, display module 1760, electronic device 1702, electronic device 1704, or server 1708). According to an embodiment, the image signal processor 1860 may be configured as at least a part of the processor 1720, or the image signal processor 1860 may be configured as a separate processor operating independently of the processor 1720. If the image signal processor 1860 is configured as a separate processor independent of the processor 1720, at least one image processed by the image signal processor 1860 may be displayed as is by the processor 1720 via the display module 1760, or the at least one image may be displayed after further processing.

[0177] According to an embodiment, the electronic device 1701 may include a plurality of camera modules 1880 with different attributes or functions. In this case, at least one of the plurality of camera modules 1880 may form, for example, a wide-angle camera, and at least another of the plurality of camera modules 1880 may form a telephoto camera. Similarly, at least one of the plurality of camera modules 1880 may form, for example, a front-facing camera, and at least another of the plurality of camera modules 1880 may form a rear-facing camera.

[0178] The electronic devices according to the various embodiments of this disclosure can be one of a variety of types of electronic devices. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. According to embodiments of this disclosure, the electronic devices are not limited to those described above.

[0179] It should be understood that the various embodiments of this disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the specific embodiments, but rather to include various changes, equivalents, or substitutions for the respective embodiments. In the description of the drawings, similar reference numerals may be used to refer to similar or related components. It will be understood that, unless the relevant context clearly indicates otherwise, the singular form of the noun corresponding to an item may include one or more things. As used herein, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one or all possible combinations of the items listed together in the corresponding phrase among the plurality of phrases. As used herein, terms such as “first” and “second” or “first” and “second” may be used only to distinguish the respective component from another component and do not limit the component in other respects (e.g., importance or order). It will be understood that if, when the terms “operational location” or “communication location” are used, or when the terms “operational location” or “communication location” are not used, an element (e.g., a first element) is referred to as “combined with another element (e.g., a second element),” “combined to another element (e.g., a second element),” “connected to another element (e.g., a second element),” or “attached to another element (e.g., a second element),” it means that the first element can be directly (e.g., wiredly) combined with the second element, wirelessly combined with the second element, or combined with the second element via a third element.

[0180] As used in conjunction with various embodiments of this disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "component," or "circuit"). A module may be a single integrated component adapted to perform one or more functions, or the smallest unit or portion of such a single integrated component. For example, according to embodiments, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0181] The various embodiments set forth herein can be implemented as software (e.g., program 1740) including one or more instructions readable by a machine (e.g., electronic device 1701) stored in a storage medium (e.g., internal memory 1736 or external memory 1738). For example, a processor (e.g., processor 1720) of the machine (e.g., electronic device 1701) can invoke and execute at least one of the one or more instructions stored in the storage medium. This enables the machine to be operated to perform at least one function according to the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. Machine-readable storage media can be provided in the form of non-transitory storage media. Here, the term "non-transitory" means only that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but this term does not distinguish between data being stored semi-permanently in the storage medium and data being temporarily stored in the storage medium.

[0182] According to embodiments, methods according to various embodiments of this disclosure may be included and provided in a computer program product. The computer program product can be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read-only memory (CD-ROM)) or via an app store (e.g., the Play Store). TM The computer program product may be distributed online (e.g., downloaded or uploaded), or may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smartphones). If it is distributed online, at least a portion of the computer program product may be temporarily generated, or at least a portion of the computer program product may be temporarily stored in a machine-readable storage medium (such as the memory of a manufacturer's server, an app store's server, or a relay server).

[0183] According to various embodiments, each of the above components (e.g., a module or program) may include a single entity or multiple entities, and some of the multiple entities may be separately located in different components. According to various embodiments, one or more of the above components may be omitted, or one or more other components may be added. Optionally or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as the corresponding component of the multiple components performed one or more functions prior to integration. According to various embodiments, the operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be run in a different order or omitted, or one or more other operations may be added.

[0184] According to embodiments of this disclosure, a camera module 100 may be provided. The camera module may include: a lens assembly 200; at least one reflecting and refractive element 300, 400, 500, 500', 600, 600', 700, 700', or 800, in which light is reflected and / or refracted at least twice; and an image sensor IS. The reflecting and refractive element 300, 400, 500, 500', 600, 600', 700, 700', or 800 may be configured to cause at least a portion of the light incident on the reflecting and refractive element to be totally internally reflected by satisfying the following Equations 1, 2, 3, 4, and 5 regarding the refractive index for total internal reflection within the reflecting and refractive element 300, 400, 500, 500', 600, 600', 700, 700', or 800.

[0185] [Formula 1] n i ≥(C1+b) / (2a-C2) (where n) i Let be the refractive index of the reflecting and refracting components; 'a' is the angle between the incident surface 301, 401, 501, 501', 601, 601', 701, 701', or 801 of the reflecting and refracting components and the first reflecting surface 302, 402, 502, 502', 602, 602', 702, 702', or 802 adjacent to the incident surface; and 'b' is the angle of incidence of light incident on the reflecting and refracting components. When the arcsine function of the reciprocal of the refractive index of the reflecting and refracting components is expressed as a linear equation of the reciprocal of the reflecting and refracting components, C1 and C2 are the coefficients and constants of the linear equation, respectively. [Equation 2] 10 <a<50 [Formula 3] b<45 [Formula 4] 1.1 <C1<1.4 [Formula 5] -0.3 <C2<+0.3 According to an embodiment, the camera module may satisfy the following equation 6.

[0186] [Formula 6] 25 <Vd_1<95 (Where, Vd_1 is the Abbe number of the reflecting and refracting components.) According to an embodiment, the incident and exit surfaces of the reflective and refractive components may be coated with a material that reduces reflectivity.

[0187] According to an embodiment, the incident and exit surfaces of the reflective and refractive components may be coated with a material that blocks at least 80% of the light, with a wavelength at least 700 nm.

[0188] According to an embodiment, the camera module may satisfy the following formula 7.

[0189] [Formula 7] 5 <FOV<35 (Where, FOV (Field of View) is the field of view of the camera module.) According to an embodiment, the lens or image sensor may be configured to perform a focusing function by moving along the optical axis OI.

[0190] According to an embodiment, the lens or image sensor may be configured to perform image stabilization by moving along a direction perpendicular to the optical axis OI.

[0191] According to an embodiment, the camera module can be configured to perform image stabilization through the movement or rotation of reflective and refractive components.

[0192] According to an embodiment, the reflective and refractive components may include glass material.

[0193] According to an embodiment, the camera module may satisfy the following formula 8.

[0194] [Formula 8] p1≤EIA≤p2 (Where, EIA (effective incident area) is the effective incident area, p1 is the first end of the first region 8011 corresponding to the effective incident area, and p2 is the second end of the first region 8011 corresponding to the effective incident area.) According to an embodiment, the camera module may be a foldable camera module.

[0195] According to an embodiment, the mirror coating may be applied to the first reflective surface.

[0196] According to an embodiment, total internal reflection can occur on each of the first reflecting surface and the incident surface.

[0197] According to an embodiment, an electronic device 1701 may be provided that includes a camera module according to the above embodiment.

[0198] According to embodiments of the present disclosure, an electronic device 1701 may be provided. The electronic device 1701 may include: reflective and refractive members 300, 400, 500, 500', 600, 600', 700, 700', or 800, configured to reflect and / or refract at least a portion of light; and an image sensor IS, configured to detect at least a portion of the light passing through the reflective and refractive members. The reflective and refractive members may include a first surface 301, 401, 501, 501', 601, 601', 701, 701', or 801 on which light is incident, and a second surface 302, 402, 502, 502', 602, 602', 702, 702', or 802 inclined relative to the first surface. Furthermore, the reflecting and refraction members 300, 400, 500, 500', 600, 600', 700, 700', or 800 can be configured to cause at least a portion of the light incident on the reflecting and refraction members to be totally internally reflected by satisfying the following Equations 9, 10, 11, 12, and 13 regarding the TRF inside the reflecting and refraction members 300, 400, 500, 500', 600, 600', 700, 700', or 800.

[0199] [Formula 9] TRF = (C1 + b) / (2a - C2) (Where, a is the angle between the first surface and the second surface adjacent to the first surface, b is the incident angle of light incident on the reflecting and refracting member, and C1 and C2 are the coefficients and constants of the linear equation when the arcsine function of the reciprocal of the refractive index of the reflecting and refracting member is expressed as the linear equation of the reciprocal of the reflecting and refracting member.) [Formula 10] 10 <a<50 [Equation 11] b<45 [Equation 12] 1.1 <C1<1.4 [Equation 13] -0.3 <C2<+0.3 According to an embodiment, the electronic device may satisfy the following formula 14.

[0200] [Formula 14] 25 <Vd_1<95 (Where, Vd_1 is the Abbe number of the reflecting and refracting components.) According to an embodiment, the electronic device may satisfy the following formula 15.

[0201] [Formula 15] 5 <FOV<35 (Where, FOV (Field of View) is the field of view of the camera module.) According to an embodiment, the reflective and refractive components may include glass material.

[0202] According to an embodiment, the electronic device may satisfy the following formula 16.

[0203] [Formula 16] p1≤EIA≤p2 (Where, EIA (effective incident area) is the effective incident area, p1 is the first end of the first region 8011 corresponding to the effective incident area, and p2 is the second end of the first region 8011 corresponding to the effective incident area.) The effects that can be obtained in this disclosure are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art.

[0204] While this disclosure has been shown and described with respect to embodiments, it should be understood that the embodiments are intended to be illustrative and not limiting. It will be readily understood by those skilled in the art that various changes in form and detail may be made without departing from the overall scope of this disclosure, including the appended claims and their equivalents.

Claims

1. A camera module (100), comprising: Lens assembly (200); At least one reflective and refractive element (300, 400, 500, 500', 600, 600', 700, 700', 800), in which light is reflected and / or refracted at least twice; as well as Image sensor (IS) The reflective and refractive elements (300, 400, 500, 500', 600, 600', 700, 700', 800) are configured to cause at least a portion of the light incident on the reflective and refractive elements to be totally internally reflected by satisfying the following Equations 1, 2, 3, 4, and 5 regarding the refractive index for total internal reflection within the reflective and refractive elements (300, 400, 500, 500', 600, 600', 700, 700', 800). [Formula 1] n i ≥(C1+b) / (2a-C2) Where, n i Let be the refractive index of the reflecting and refracting component, 'a' be the angle between the incident surface (301, 401, 501, 501', 601, 601', 701, 701', 801) of the reflecting and refracting component and the first reflecting surface (302, 402, 502, 502', 602, 602', 702, 702', 802) adjacent to the incident surface, and 'b' be the angle of incidence of light incident on the reflecting and refracting component. When the arcsine function of the reciprocal of the refractive index of the reflecting and refracting component is expressed as a linear equation of the reciprocal of the reflecting and refracting component, C1 and C2 are the coefficients and constants of the linear equation, respectively. [Equation 2] 10<a<50 [Formula 3] b<45 [Formula 4] 1.1<C1<1.4 [Formula 5] -0.3<C2<+0.3。 2. The camera module according to claim 1, wherein, The camera module satisfies the following equation 6. [Formula 6] 25 <Vd_1<95 Wherein, Vd_1 is the Abbe number of the reflection and refraction components.

3. The camera module according to claim 1 or 2, wherein, The incident and exit surfaces of the reflective and refractive components are coated with a material that reduces reflectivity.

4. The camera module according to any one of claims 1 to 3, wherein, The incident and exit surfaces of the reflective and refractive components are coated with a material that blocks at least 80% of light with a wavelength at least 700 nm.

5. The camera module according to any one of claims 1 to 4, wherein, The camera module satisfies the following equation 7. [Formula 7] 5 <FOV<35 Here, FOV (Field of View) is the field of view of the camera module.

6. The camera module according to any one of claims 1 to 5, wherein, The lens or the image sensor is configured to perform focusing by moving along the optical axis (OI).

7. The camera module according to any one of claims 1 to 6, wherein, The lens or the image sensor is configured to perform image stabilization by moving along a direction perpendicular to the optical axis (OI).

8. The camera module according to any one of claims 1 to 7, wherein, The camera module is configured to perform image stabilization through the movement or rotation of the reflective and refractive components.

9. The camera module according to any one of claims 1 to 8, wherein, The reflective and refractive components include glass material.

10. The camera module according to any one of claims 1 to 9, wherein, The camera module satisfies the following equation 8. [Formula 8] p1≤EIA≤p2 Wherein, EIA (effective incident area) is the effective incident area, p1 is the first end of the first region (8011) corresponding to the effective incident area, and p2 is the second end of the first region (8011) corresponding to the effective incident area.

11. The camera module according to any one of claims 1 to 10, wherein, The camera module is a foldable camera module.

12. The camera module according to any one of claims 1 to 11, wherein, A mirror coating is applied to the first reflective surface.

13. The camera module according to any one of claims 1 to 12, wherein, Total internal reflection occurs on each of the first reflecting surface and the incident surface.

14. The camera module according to any one of claims 1 to 13, wherein, A cut surface is formed at the vertex between the incident surface and the first reflecting surface and / or at the vertex between the reflecting surface and the second reflecting surface.

15. An electronic device (1701) comprising a camera module according to any one of claims 1 to 14.

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