Camera module and electronic device including the same

Abstract

An electronic device according to an embodiment of the present disclosure may include: at least one lens; an image sensor aligned with the at least one lens along an optical axis; and a reflective and refractive member disposed between the at least one lens and the image sensor on the optical axis. The reflective and refractive member may include: an incident surface on which light passing through the at least one lens is incident; a first reflecting surface inclined with respect to the incident surface; and a second reflective surface inclined with respect to the incident surface and spaced apart from the first reflective surface. The first cut surface and the second cut surface are inclined on the plane of incidence and may be oriented in a first direction and a second direction, respectively.

Description

Technical Field

[0001] The present disclosure relates to optical devices, and more particularly to camera modules and electronic devices including the camera modules. Background Art

[0002] Optical devices such as cameras capable of capturing images and / or videos have been widely used. Conventional film-type cameras have recently been replaced by digital cameras or video cameras having solid-state image sensors such as charge coupled devices (CCDs) or complementary metal oxide semiconductors (CMOSs), because cameras employing solid-state image sensors (CCDs or CMOSs) can easily save, copy, or move images compared to film-type cameras, and thus have replaced film-type cameras.

[0003] As the consumption model of cameras shifts from compact stand-alone cameras to camera modules embedded in mobile devices (e.g., smart phones), continued miniaturization while maintaining image quality may become a constraint. Relatively high image quality can be achieved by cameras with large optical lens systems and large imaging surfaces (e.g., image sensors). Therefore, high image quality and miniaturization may be in a relative (tradeoff) relationship. Related attempts to address this tradeoff may include using multiple single-focus lens type camera modules in one electronic device.

[0004] For example, in this attempt, a zoom effect can be created by making each single focus lens type camera module have a different focal length and appropriately mixing with digital zoom. Camera modules that can adopt this method may include a wide-angle camera (e.g., an ultra-wide-angle camera) that may have a shorter focal length than a camera with a focal length of 24 to 35 millimeters (mm) and a camera (e.g., a telephoto camera) that may have a longer focal length than a 35mm camera optical lens system. Among camera modules, a telephoto camera that may have a relatively long (e.g., three times longer) focal length may require a longer installation space than other cameras in the longitudinal direction, and therefore, an optical lens system including a lens having a smaller diameter than a wide-angle camera may be adopted. However, as the demand for higher zoom performance increases, space restrictions on mounting cameras may occur. Therefore, an electronic device may include a camera module that may adopt a folded (or curved) optical lens system that has improved installability when compared to other camera modules. For example, a camera module that adopts a folded optical lens system may be implemented by shortening the light incident path while maintaining an effective focal length by refracting light two or more times.

[0005] The above information may be provided as background technology to help understand the present disclosure. No statement or determination is made as to whether any of the above content is applicable as background technology related to the present disclosure. Summary of the invention

[0006] Technical Solution

[0007] According to aspects of the present disclosure, an electronic device is provided. The electronic device may include: at least one lens; an image sensor aligned with the at least one lens along an optical axis; and a reflection and refraction member disposed between the at least one lens and the image sensor on the optical axis. The reflection and refraction member may include: an incident surface on which light passing through the at least one lens is incident; a first reflection surface inclined relative to the incident surface; and a second reflection surface inclined relative to the incident surface and spaced apart from the first reflection surface. A first cut surface inclined relative to the incident surface and the first reflection surface may be formed at a first edge of the first reflection surface. A second cut surface inclined relative to the incident surface and the second reflection surface may be formed at a second edge of the second reflection surface. The first cut surface may face a first direction, and the second cut surface may face a second direction different from the first direction.

[0008] According to aspects of the present disclosure, an electronic device is provided. The electronic device may include: at least one lens; an image sensor aligned with the at least one lens along an optical axis; and at least one reflective and refractive member disposed between the at least one lens and the image sensor on the optical axis. A lens assembly including at least one lens, an image sensor, and at least one reflective and refractive member may form a folded optical lens system in which a path of light incident on the at least one lens is reflected or refracted at least twice. Among the at least one reflective and refractive member, a first reflective and refractive member closest to the imaging side of the image sensor may include an incident surface on which light passing through the at least one lens is incident. The first reflective surface may be inclined relative to the incident surface. The second reflective surface may be formed to be inclined relative to the incident surface and spaced apart from the first reflective surface. A first cut surface inclined relative to the incident surface and the first reflective surface may be formed at a first edge of the first reflective surface. A second cut surface inclined relative to the incident surface and the second reflective surface may be formed at a second edge of the second reflective surface. The first cut surface may face a first direction, and the second cut surface may face a second direction different from the first direction.

[0009] Additional aspects may be set forth in part in the description which follows and, in part, may be obvious from the description, and / or may be learned by practice of the presented embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other aspects, configurations and / or advantages of the embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0011] Figure 1 is a view showing a camera module including a reflective and refractive member according to an embodiment;

[0012] Figure 2a is an enlarged view showing a vertex portion between an incident surface and a first reflecting surface of a reflecting and refractive member according to an embodiment;

[0013] Figure 2b is an enlarged view showing a vertex portion between an exit surface and a second reflection surface of a reflection and refraction member according to an embodiment;

[0014] Figure 3 is a view showing a camera module including a reflective and refractive member having a cut face parallel to an optical axis according to an embodiment;

[0015] Figure 4 It shows that when light is incident on Figure 3 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0016] Figure 5 is a view showing a camera module including a reflective and refractive member having a first cut surface according to an embodiment;

[0017] Figure 6 It shows that when light is incident on Figure 5 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0018] Figure 7 is a view showing a camera module including a reflective and refractive member having a first cut surface according to an embodiment;

[0019] Figure 8 It shows that when light is incident on Figure 7 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0020] Fig. 9 is a view showing a camera module including a reflective and refractive member having a first cut surface and a second cut surface according to an embodiment;

[0021] Fig.10 It shows that when light is incident on Fig. 9 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0022] Fig.11 is a view showing a camera module including a reflective and refractive member according to an embodiment;

[0023] Fig.12a is an enlarged view showing a vertex portion between a first surface and a first reflective surface of a reflective and refractive member according to an embodiment;

[0024] Figure 12b is an enlarged view showing a vertex portion between a first surface and a second reflective surface of a reflective and refractive member according to an embodiment;

[0025] Fig.13 is a view showing a camera module including a reflective and refractive member having a cut face parallel to an optical axis according to an embodiment;

[0026] Fig.14 It shows that when light is incident on Fig.13 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0027] Fig.15 is a view showing a camera module including a reflective and refractive member having a first cut surface according to an embodiment;

[0028] Fig.16 It shows that when light is incident on Fig.15 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0029] Fig.17 is a view showing a camera module including a reflective and refractive member having a first cut surface according to an embodiment;

[0030] Fig.18 It shows that when light is incident on Fig.17 A view of a simulation result of performing light path tracing on a camera module of an embodiment of the present invention;

[0031] Fig.19 is a view showing a camera module including a reflective and refractive member having a first cut surface and a second cut surface according to an embodiment; and

[0032] Fig. 20 It shows that when light is incident on Fig.19 A view of a simulation result of performing a ray path tracing on a camera module of an embodiment. DETAILED DESCRIPTION

[0033] In the case of a camera module including a reflective and refractive member, a folded optical lens system that changes the propagation direction of light at an angle of 45 degrees can be used to reflect or refract the optical axis once using a prism or a mirror, thereby helping to simplify the electronic device. However, it may be difficult to reduce the overall length of the optical lens system and reduce the height of the camera module.

[0034] In addition, a camera module adopting a folded optical lens system includes a reflection and refraction component using a prism or a mirror as a component for changing an optical path, and since the optical axis is reflected or refracted two or more times by using a prism, an unnecessary image may be obtained when light enters an imaging surface of an image sensor on an unexpected path.

[0035] A camera module including a folded optical lens system may generate stray light (or flare) that is imaged onto an image sensor as is light reflected along an unwanted optical path in a prism or a mirror.

[0036] The objects of the present disclosure are not limited to the above contents, and other unmentioned objects will be apparent to those of ordinary skill in the art from the following description.

[0037] The following description in conjunction with the accompanying drawings can provide an understanding of various exemplary implementations of the present disclosure, including the claims and their equivalents. The specific implementation disclosed in the following description requires various specific details to assist understanding, but is considered to be one of the various implementations. Therefore, it will be understood by those skilled in the art that various changes and modifications may be made to the various implementations described in the present disclosure without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and brevity, the description of known functions and configurations may be omitted.

[0038] The terms and words used in the following specification and claims are not limited to the bibliographic meanings, but may be used to clearly and consistently describe the embodiments of the present disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various implementations of the present disclosure is provided for descriptive purposes only and not for the purpose of limiting the present disclosure to the scope of the claims and their equivalents.

[0039] Unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Thus, as an example, "a component surface" may be interpreted as including one or more of the surfaces of the component.

[0040] In the following embodiments, various embodiments of a camera module capable of reducing or preventing stray light may be provided. The camera module may be installed and used in various electronic devices. Hereinafter, embodiments of the present disclosure are described with reference to the accompanying drawings.

[0041] For example, the electronic device according to the embodiment may include at least one of a smart phone, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop computer, a netbook computer, a workstation, a personal digital assistant (PDA), a portable multimedia player (PMP), a moving picture experts group (MPEG) audio layer III (MP3) player, a mobile medical device, a camera, a wearable device, etc. The wearable device may include but is not limited to at least one of an accessory device (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted device (HMD)), a fabric or clothing integrated device (e.g., an electronic garment), a body-attached device (e.g., a skin pad or a tattoo), or a body-implantable device. In some embodiments, the electronic device may include but is not limited to a television (TV), a digital video disc (DVD) player, an audio player, a refrigerator, an air conditioner, a cleaner, an oven, a microwave oven, a washing machine, a dryer, an air purifier, a set-top box, a home automation control panel, a security control panel, a multimedia box (e.g., Samsung HomeSync TM , Apple TV TM or Google TV TM ), game consoles (e.g., Xbox TM or PlayStation TM ), at least one of an electronic dictionary, an electronic key, a camera, an electronic photo frame, etc.

[0042] According to an embodiment, the electronic device may include, but is not limited to, at least one of various medical devices (e.g., various portable medical measuring devices (blood sugar measuring devices, heart rate measuring devices, or body temperature measuring devices), magnetic resonance angiography (MRA) devices, magnetic resonance imaging (MRI) devices, computed tomography (CT) devices, imaging devices, or ultrasound devices), navigation devices, global navigation satellite system (GNSS) receivers, event data recorders (EDRs), flight data recorders (FDRs), in-vehicle entertainment devices, ship electronic devices (e.g., ship navigation devices or gyrocompasses), avionics devices, security devices, in-vehicle central control, industrial or household robots, drones, automatic teller machines (ATMs) of financial institutions, point of sale (POS) devices of stores, or Internet of Things devices (e.g., light bulbs, various sensors, sprinklers, fire alarms, thermostats, street lights, toasters, fitness equipment, hot water tanks, heaters, or boilers). According to some embodiments, examples of electronic devices may be at least one of a part of a piece of furniture or a building / structure, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g., devices for measuring water, electricity, gas, or electromagnetic waves). In various embodiments, the electronic device may be flexible or a combination of two or more of the various devices described above. According to an embodiment of the present disclosure, the electronic device is not limited to those devices described above. As used herein, the term "user" may refer to a person or another device (e.g., an artificial intelligence electronic device) using an electronic device. The electronic device according to the embodiment is not limited to those devices described above.

[0043] According to an embodiment, the electronic device may include one or more optical devices (eg, the camera module 100). In an embodiment, the optical device may be equipped with a lens assembly.

[0044] Although there may be some numbers in describing the embodiments of the present disclosure, it should be noted that these numbers may not limit the embodiments as long as these numbers are not stated in the claims.

[0045] Figure 1 is a view of a camera module 100 including a reflective and refractive member 300 according to an embodiment. Figure 2a is an enlarged view of a vertex portion between an incident surface and a first reflective surface of the reflective and refractive member 300 according to an embodiment. Figure 2b 2 is an enlarged view showing a vertex portion between an exit surface and a second reflection surface of the reflection and refraction member 300 according to an embodiment.

[0046] Figure 2a and Figure 2b It may be an enlarged view of the entire edge of the reflective and refractive member 300 and / or an enlarged view of a portion of the edge.

[0047] In the following description, the length direction, width direction and / or thickness direction of the components included in the camera module 100 and / or the camera module 100 may be described. As used herein, the length direction may refer to the Y-axis direction, the thickness direction may refer to the X-axis direction, and the width direction may refer to the direction perpendicular to the X-axis direction and the Y-axis direction. In an embodiment, the direction perpendicular to the X-axis direction and the Y-axis direction may refer to the "Z-axis direction" of a Cartesian coordinate system. In an embodiment, the direction facing the surface of a component may refer to the direction facing a normal drawn from the surface of the component. In an embodiment, regarding the direction in which the component is oriented, a negative sign and / or a positive sign (e.g., "-", "+") may be mentioned together with the Cartesian coordinate system illustrated in the accompanying drawings. For example, the surface facing the object side of the lens (e.g., the first lens L1) closest to the object side O of the camera module 100 and / or the incident surface 301 of the reflective and refractive member 300 may be referred to as a surface facing the -X axis direction, and the surface facing the image side I of the lens (e.g., the fourth lens L4) closest to the image sensor IS side of the camera module 100 and / or the exit surface 304 of the reflective and refractive member 300 may be referred to as a surface facing the +X axis direction. However, the description of the directions is not limited thereto, and the directions may be described in different ways without departing from the scope of the present disclosure.

[0048] In an embodiment, when the electronic device including the camera module 100 is a portable terminal such as a smart phone, the front surface of the electronic device may be referred to as a surface facing the -X axis direction, and the rear surface of the electronic device may be referred to as a surface facing the +X axis direction. When the camera module 100 is a front camera mounted on an electronic device, the surface facing the object side of the lens (e.g., the first lens L1) closest to the object (obj) side O of the camera module 100 may face the same direction as the front surface of the electronic device. When the camera module 100 is a rear camera mounted on an electronic device, the surface facing the object side of the lens (e.g., the first lens L1) closest to the object (obj) side O of the camera module 100 may face the same direction as the rear surface of the electronic device. Therefore, in the description of the direction, the direction is divided only for convenience, and the arrangement direction of the camera module 100 and the components may not be limited, and may be set in various ways according to the embodiment. In an embodiment, the X-axis direction may include both the -X axis direction and the +X axis direction. The Y-axis direction may include both the -Y axis direction and the +Y axis direction. The Z-axis direction may include both the +Z-axis direction and the -Z-axis direction. For example, the thickness of the electronic device may be defined as the distance between the front surface of the electronic device (the surface facing the -X-axis direction) and the rear surface of the electronic device (the surface facing the +X-axis direction), and the thickness direction of the electronic device may be defined as the X-axis direction. It should be noted that for the sake of simplicity of description, the directions are defined in this way relative to the Cartesian coordinate system shown in the accompanying drawings, and the description of these directions or components does not limit the embodiments of the present disclosure.

[0049] According to an embodiment, the electronic device may include at least one of a wide-angle camera, an ultra-wide-angle camera, a close-up camera, a telephoto camera, or an infrared photodiode as a lens assembly or a light receiving element, and may include a flash and / or an infrared laser diode as a light source and / or a light-emitting element. In an embodiment, the electronic device may use an infrared laser diode and / or an infrared photodiode to emit an infrared laser to an object obj and receive an infrared laser reflected by the object obj, thereby detecting the distance and / or depth of the object obj. In an embodiment, the electronic device may shoot an object obj by using a camera module 100 that can combine any two or more of the above-mentioned cameras, and if necessary, may provide light toward the object obj by using a flash.

[0050] According to an embodiment, among the cameras that may be included in the camera module 100, a wide-angle camera, an ultra-wide-angle camera, or a close-up camera may have a smaller total lens length along the optical axis direction of the lens than a telephoto camera. For example, the total lens length of a telephoto camera having a relatively long focal length may be greater than the total lens length of other cameras. The total lens length may represent the distance from the object side surface of the first lens L1 on the object side to the imaging surface img of the image sensor IS. In an embodiment, even if the wide-angle camera, the ultra-wide-angle camera, or the close-up camera arranges the lens along the thickness direction of the electronic device (e.g., the +X axis and / or -X axis direction), the effect on the thickness of the electronic device may be substantially less than the effect of the telephoto camera on the thickness of the electronic device. For example, a wide-angle camera, an ultra-wide-angle camera, or a close-up camera may be set in the electronic device in a state where the direction of light incident from the outside to the electronic device and the direction of the optical axis of the lens are substantially the same.

[0051] Wide-angle cameras, ultra-wide-angle cameras, or close-up cameras may be referred to as vertical optical lens systems. In an embodiment, a telephoto camera may have a small field of view when compared with a wide-angle camera, an ultra-wide-angle camera, or a close-up camera, but may be useful for photographing objects at a longer distance. Compared with a wide-angle camera, an ultra-wide-angle camera, or a close-up camera, a telephoto camera may include more lenses. For example, when a lens group 200 including at least one lens is arranged in the thickness direction of an electronic device (e.g., +X axis and / or -X axis direction), the thickness of the electronic device may increase, or the lens group 200 may substantially protrude to the outside of the electronic device. The telephoto camera may include at least one reflection and refraction member (or refraction member) 300 that reflects or refracts light incident on the lens group 200 in another direction to reduce the thickness of the electronic device including the lens group 200. When implementing the telephoto function, the lens group 200 including at least one lens may be arranged to move back and forth in the incident direction of light or the propagation direction of reflected or refracted light, thereby preventing or reducing the thickness increase of the electronic device.

[0052] According to an embodiment, the electronic device may include a lens assembly having an optical axis OI (indicated by a dotted line) from an object side O to an image side I. Here, the object side may indicate a direction in which an object obj is located, and the image side may indicate a direction in which an imaging surface img is formed. In addition, the surface of the lens facing the object side O may refer to a surface facing the object obj relative to the optical axis OI, and may refer to the left surface (or front surface) of the lens in the drawings according to an embodiment of the present disclosure, and the surface facing the image side I may refer to a surface facing the imaging surface img relative to the optical axis OI, and may represent the right surface (or rear surface) of the lens in the drawings. The imaging surface img may be an image-forming portion of an image capture element and / or an image sensor IS. The optical axis OI may refer to an optical path passing through the center of at least one lens and the center of the image sensor IS when the lens group 200 including at least one lens and the image sensor IS are aligned.

[0053] Meanwhile, in the case of the camera module 100 including the lens assembly forming the vertical optical lens system, the optical axis OI may be formed parallel to any one direction (e.g., the X-axis direction) of the Cartesian coordinate system. Alternatively, in the camera module 100 including the lens assembly forming the curved optical lens system, the optical axis OI may include an optical path parallel to any one direction (e.g., the X-axis direction) of the Cartesian coordinate system, but the path may be curved to include an optical path toward another portion of the components (e.g., the reflective and refractive member 300) included in the camera module 100.

[0054] Hereinafter, according to an embodiment, when describing a plurality of lenses (e.g., a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4), a portion of each lens close to the optical axis OI may be referred to as a main portion, and a portion away from the optical axis OI (or around the edge of the lens) may be referred to as an edge portion. The main portion may be a portion that intersects the optical axis OI in the first lens L1. The edge portion may be a portion that is spaced a predetermined distance from the optical axis in the first lens L1. The edge portion may include an end portion of the lens that may be positioned farthest from the optical axis OI of the lens. As used herein, the direction faced by a lens included in the camera module 100 may refer to the direction faced by the main portion and / or edge portion of the corresponding lens surface.

[0055] Figure 1The camera module 100 shown in the figure is a telephoto camera including a lens group 200 including at least one lens and an image sensor IS, and may include a folded optical lens system (e.g., a bent optical lens system) configured to bend the propagation direction of light at least twice. As used herein, the camera module 100 including such a folded optical lens system may be referred to as a folded camera. The folded camera 100 may include a reflective and refractive member 300 capable of reflecting and / or refracting the propagation direction of light at least twice between the lens group 200 including at least one lens and the image sensor IS, so as to bend the propagation direction of light at least twice.

[0056] According to an embodiment, the lens group 200 may include one lens or may include a combination of multiple lenses. For example, the lens group 200 may include a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4. Multiple lenses (e.g., L1, L2, L3, and L4) may be arranged in a state aligned with the optical axis of the image sensor IS. Although Figure 1 Four lenses (eg, L1, L2, L3, and L4) are shown, but the present disclosure is not limited thereto. For example, a smaller number of lenses and / or a greater number of lenses than those shown in the drawings may be provided.

[0057] The image sensor IS may be configured to detect light reflected and / or refracted by the reflective and refractive member 300 and incident on the imaging surface img. For example, light incident from outside the camera module 100 may be detected by the image sensor IS via the lens group 200 and the reflective and refractive member 300, and the electronic device may obtain an object image based on the signal and / or information detected by the image sensor IS. According to an embodiment, when performing an image stabilization operation, the image sensor IS may be shifted in the length direction (e.g., +Y axis direction or -Y axis direction) or the width direction (e.g., perpendicular to the +Y axis, -Y axis, +X axis, and -X axis) of the camera module 100. In an embodiment, when the lens assembly is used as a telephoto camera, the image quality of the captured image may be further enhanced by equipping an image stabilization function. In an embodiment, when the image sensor IS becomes larger, the optical performance of the camera module 100 may be further improved.

[0058] According to an embodiment, the reflective and refractive member 300 may be disposed between the lens group 200 and the image sensor IS. Light incident on the lens group 200 from the outside may be reflected at least twice by the reflective and refractive member 300, and may be focused and / or aligned with the image sensor IS. Therefore, the optical lens system from the lens group 200 to the image sensor IS may be reduced in size. A camera having such a structure may be referred to as a lens-guided camera.

[0059] The reflection and refraction member 300 may include a prism, a mirror that transmits light, a mirror that reflects light, and / or an opening. For example, the reflection and refraction member 300 may be provided with a prism on one side and a mirror that reflects light on the other side. In addition, the reflection and refraction member 300 may be configured so that at least two surfaces thereof are formed by prisms to reflect and / or refract light. According to an embodiment, the reflection and refraction member 300 may be formed by a combination of a plurality of prisms and / or mirrors. According to an embodiment, the reflection and refraction member 300 may be formed by combining a plurality of prism blocks and / or mirror blocks. For example, the reflection and refraction member 300 may be formed by combining prism blocks and / or mirror blocks having a triangular cross section and / or a rectangular cross section to form a structure such as Figure 1 A reflecting and refractive member 300 is shown in FIG.

[0060] In an embodiment, the reflective and refractive member 300 may include an incident surface 301 into which light passing through the lens group 200 is incident, a first reflective surface 302 inclined with respect to the incident surface 301 , and a second reflective surface 303 inclined with respect to the incident surface 301 and spaced apart from the first reflective surface 302 .

[0061] Reference together Figure 1 to Figure 2b , the incident surface 301 may be a surface through which the light IL passing through the lens group 200 enters the reflective and refractive member 300. According to an embodiment, the incident surface 301 may be formed to be spaced apart from a lens (e.g., the fourth lens L4) closest to the image side I of the lens group 200 by a predetermined distance in the direction of the image side I. According to an embodiment, the incident surface 301 may be parallel to the front surface (e.g., the surface parallel to the -X axis direction) and the rear surface (e.g., the surface parallel to the +X axis direction) of the electronic device, respectively, and the optical axis OI may be orthogonal to the incident surface 301. According to an embodiment, an opening may be formed in at least a portion of the incident surface 301, or a prism or a reflector capable of transmitting light may be formed to transmit light. The first reflective surface 302 may be a surface on which light incident on the incident surface 301 is initially reflected and / or refracted.

[0062] refer to Figure 2a, the first reflective surface 302 may be formed to be inclined relative to the incident surface 301. For example, when the cross section of the edge portion of the reflective and refractive member 300 is magnified, the reflective and refractive member 300 may be conceptually represented as a triangle having three vertices P1, P2, and P3. Here, the vertex P2 may be a vertex between the first reflective surface 302 and the incident surface 301. For example, the inclination angle a between the first reflective surface 302 and the incident surface 301 formed at the vertex P2 may be set to vary according to the embodiment. However, in general, when the inclination angle a has a very small acute angle (e.g., when sharp), it may be difficult to handle the lens (e.g., insert the lens into the lens barrel) during the assembly of the lens assembly of the camera module 100. For example, among the three vertices P1, P2, and P3, the vertex P1 may have a value of about 90 degrees, and the inclination angle b at the vertex P3 may be set to a value that can be automatically determined when the inclination angle a at the vertex P2 is specified. According to an embodiment of the present disclosure, the reflective and refractive member 300 may be formed with a cut surface for reducing and / or preventing stray light, and as Figure 2a As shown in , the cut surface located on one side of the incident surface 301 may face the first direction D1.

[0063] According to an embodiment, the reflective and refractive member 300 may include an exit surface 304, and the light EL passing through the reflective and refractive member 300 may exit through the exit surface 304. According to another embodiment, the reflective and refractive member 300 may include a second reflective surface 303 formed to be inclined relative to the incident surface 301 (or the exit surface 304) and spaced apart from the first reflective surface 302.

[0064] refer to Figure 2b , when the cross section of another edge portion of the reflection and refraction member 300 is magnified, the reflection and refraction member 300 can be conceptually represented as a triangle having three vertices P4, P5 and P6. Here, the vertex P5 can be the vertex between the second reflection surface 303 and the exit surface 304. For example, the inclination angle c formed between the second reflection surface 303 and the exit surface 304 at the vertex P5 can be set to vary according to the embodiment. Among the three vertices P4, P5 and P6, the vertex P4 can be set to approximately 90 degrees, and the inclination angle d at the vertex P6 can be set to a value that can be automatically determined when the inclination angle c at the vertex P5 is specified. According to an embodiment of the present disclosure, the reflection and refraction member 300 can be formed with a cut surface for reducing and / or preventing stray light, and as Figure 2b As shown in , the cut surface located on the exit surface 304 may face the second direction D2.

[0065] According to an embodiment, light incident perpendicularly to the incident surface 301 of the reflection and refraction member 300 may pass through an internal space (e.g., an optical waveguide) surrounded by the incident surface 301, the first reflection surface 302, the second reflection surface 303, and the exit surface 304 of the reflection and refraction member 300, and may exit perpendicularly to the exit surface 304. According to an embodiment, the incident surface 301 of the reflection and refraction member 300 may be referred to as a first surface, the first reflection surface 302 may be referred to as a second surface, the second reflection surface 303 may be referred to as a third surface, and the exit surface 304 may be referred to as a fourth surface.

[0066] As a surface different from the incident surface 301 through which the light is incident, the exit surface 304 through which the light is exited may be formed to be spaced apart from the incident surface 301. According to an embodiment, the exit surface 304 may face and / or may be substantially parallel to the incident surface 301 while being spaced apart from the incident surface 301 by a predetermined distance. According to an embodiment, the incident surface 301 and the exit surface 304 may face opposite directions, and the first reflection surface 302 and the second reflection surface 303 may face opposite directions. According to an embodiment, the reflective and refractive member 300 may have a parallelogram cross-sectional shape in which the incident surface 301 and the exit surface 304 are substantially parallel and the first reflection surface 302 and the second reflection surface 303 are substantially parallel. In this case, the incident surface 301 may be stated as being inclined in the same direction as the exit surface 304, and the first reflection surface 302 may be stated as being inclined in the same direction as the second reflection surface 303. In Figure 1 to Figure 2b In an embodiment, with respect to light propagating along the optical axis OI, light passing through the reflective and refractive member 300 may face a direction in which a direction in which the light is incident and a direction in which the light is emitted may be the same.

[0067] According to an embodiment of the present disclosure, in the reflective and refractive member 300, the first cut surface (eg, Fig. 9 The first cutting surface 305 of the embodiment of the present invention can be formed at the edge of the first reflecting surface 302, and the second cutting surface (for example, Fig. 9 The second cutting surface 306 may be formed at an edge of the second reflecting surface 303 .

[0068] Reference together Figure 2a and Figure 2b , the first cutting surface 305 may be formed to face the first direction (eg, Figure 2a The second cutting surface 306 may be formed to face a direction different from the first direction at a position spaced apart from the first cutting surface 305. For example, the second cutting surface 306 may be formed to face a second direction (e.g., Figure 2bThe second direction D2 of the optical axis). According to an embodiment, the first cutting surface 305 may be a section cut along the second imaginary line l2, and the second imaginary line l2 is drawn to have a predetermined angle in the clockwise direction (+) from the imaginary line l1 parallel to the optical axis OI or a point on the optical axis OI. The first cutting surface 305 may be a section cut in the propagation direction and the tilt direction of the light parallel to the optical axis OI. The second cutting surface 306 may be a section cut along the second imaginary line l3, and the second imaginary line l3 is drawn to have a predetermined angle in the counterclockwise direction (-) from the first imaginary line l1 parallel to the optical axis OI or a point on the optical axis OI. The second cutting surface 306 may be a section cut in the propagation direction and the tilt direction of the light parallel to the optical axis OI. In an embodiment (first embodiment), the first cutting surface 305 and the second cutting surface 306 may be formed to be inclined to opposite sides relative to the optical axis OI. For example, the first cutting face 305 may be formed to form a predetermined angle with the optical axis OI in the clockwise direction (+), and the second cutting face 306 may be formed to form a predetermined angle with the optical axis OI in the counterclockwise direction (-). When the first cutting face 305 and the second cutting face 306 face the same direction (e.g., clockwise (+) or counterclockwise (-)) relative to the optical axis OI, the optical path of stray light propagating in the internal space of the reflective and refractive member 300 may not be reduced or removed, but may exist, and in some embodiments, another optical path may be formed. The reflective and refractive member 300 may include the first cutting face 305 and the second cutting face 306 tilted to opposite sides relative to the optical axis OI, thereby reducing and / or preventing the generation of potential stray light and / or reducing and / or preventing the generation of potential flare.

[0069] According to an embodiment, the camera module 100 including the reflective and refractive member 300 may satisfy the following Formula 1 and / or Formula 2 to reduce and / or prevent generation of stray light (and / or reduce and / or prevent generation of flare).

[0070] [Formula 1]

[0071] 5<|Ang_A1|<50

[0072] [Formula 2]

[0073] 5<|Ang_A2|<50

[0074] Here, Ang_A1 of Formula 1 may be the angle between the optical axis OI and the first cutting surface 305 (eg, Figure 2a Ang_A1 of Formula 2), and Ang_A2 of Formula 2 may be the angle between the optical axis OI and the second cutting surface 306 (eg, Figure 2bAng_A2). When the angle between the first cutting face 305 and the second cutting face 306 is less than the lower limit (e.g., 5 degrees) in Formula 1 and Formula 2, the possibility of stray light (and / or flare) may increase, and the intensity of stray light (and / or flare) may also increase. Alternatively, when the angle between the first cutting face 305 and the second cutting face 306 is greater than the upper limit (e.g., 50 degrees) in Formula 1 and Formula 2, the processing of the reflective and refractive member 300 may be difficult, and a new acute angle may be formed by the processed surface (e.g., the first cutting face 305 and the second cutting face 306), making it difficult to process the reflective and refractive member 300.

[0075] According to an embodiment, the camera module 100 including the reflective and refractive member 300 may satisfy the following Formula 3 to reduce and / or prevent the generation of stray light (and / or reduce and / or prevent the generation of flare).

[0076] [Formula 3]

[0077] -10 <Ang_A1 / Ang_A2<-0.1

[0078] Formula 3 may mean the angle between the optical axis OI and the first cutting surface 305 (eg, Figure 2a Ang_A1 in FIG. 3 ) and the angle between the optical axis OI and the second cutting surface 306 (eg, Figure 2b As described above, the present disclosure may include a first cutting face 305 and a second cutting face 306 facing opposite directions relative to the optical axis OI, thereby reducing or preventing the generation of stray light (or reducing or preventing the generation of flare).

[0079] According to an embodiment, at least one of the first reflective surface 302 and the second reflective surface 303 may be formed to satisfy a total reflection condition. In addition, according to an embodiment, the reflective and refractive member 300 may include the first reflective surface 302 and / or the second reflective surface 303 coated with a high reflectivity material. According to another embodiment, the reflective and refractive member 300 may satisfy the following formula 4.

[0080] [Formula 4]

[0081] 25 <Vd_1<95

[0082] Here, Vd_1 of Formula 4 represents the dispersion value (and / or Abbe number) of the reflective and refractive member 300, which can be related to the refractive index of the reflective and refractive member 300. The reflective and refractive member 300 can be located between the lens group 200 and the imaging surface img of the image sensor IS, thereby affecting aberrations such as curvature and / or chromatic aberrations. When the dispersion value of the reflective and refractive member 300 is greater than the upper limit value (e.g., 95), it can be beneficial to correct chromatic aberration. However, due to the soft material, it may be difficult to assemble the lens assembly and manage the process. On the other hand, when the dispersion value becomes less than the lower limit (e.g., 25) of the reflective and refractive member 300, the overall properties of the material can be improved, but it may be difficult to control chromatic aberration.

[0083] In addition, for example, the reflective and refractive member 300 can allow at least one of the first cutting surface 305 and the second cutting surface 306 to have an illumination (roughness) that can relatively reduce the reflectivity of light passing through at least one cutting surface. For example, at least one of the first cutting surface 305 and the second cutting surface 306 can be corroded and / or blackened to obtain an illumination that can relatively reduce the reflectivity of light. Alternatively, by printing and / or depositing a coating on at least one of the first cutting surface 305 and the second cutting surface 306, an illumination (roughness) that can relatively reduce the reflectivity can be obtained.

[0084] According to an embodiment, a coating capable of blocking about 80% or more of light of about 700 nanometers (nm) or more may be applied to a cut surface of at least one of the incident surface 301 or the exit surface 304 of the reflective and refractive member 300. By allowing the incident surface 301 and / or the exit surface 304 to block 80% or more of light of about 700 nm or more, visible light or more (e.g., infrared rays) may be blocked.

[0085] According to an embodiment of the present disclosure, a lens assembly including the lens group 200 , the image sensor IS, and the reflective and refractive member 300 may satisfy the following Formula 5.

[0086] [Formula 5]

[0087] 5 <FOV<35

[0088] Here, the FOV of Formula 5 may be the field of view of the electronic device including the lens assembly. The electronic device including the reflective and refractive member 300 of the present disclosure may be targeted at a folded optical lens system. When the field of view of the electronic device including the lens assembly is about 35 degrees or more, the focal length may be reduced, and the distance between the image sensor IS and the lens group 200 may be reduced. Therefore, it may be difficult to set the reflective and refractive member 300. On the other hand, when the field of view is about 5 degrees or less, the focal length may be too long, and the size of the entire optical lens system may increase.

[0089] In the following, reference Figures 3 to 10 The first cutting face 305 and the second cutting face 306 are described in more detail.

[0090] Figure 3 is a view showing a camera module 100 including a reflective and refractive member 300 having a cut face 305 formed parallel to an optical axis OI according to an embodiment of the present disclosure. Figure 4 is a diagram showing the effect of light incident on the Figure 3 FIG. 1 is a view of a simulation result of performing light path tracing on the camera module 100 according to an embodiment of the present invention.

[0091] Figure 4 An image sensor IS having a width of about 5 mm (e.g., length in the Z-axis direction) and a length of about 4 mm (e.g., length in the Y-axis direction) is shown, for example. In the following embodiments, the image height (IH) of the image sensor IS may be mentioned, and since the image height (IH) corresponds to half the diagonal length of the image sensor IS, the following description is based on the image height (IH) being about 3 mm. In the following, Figure 6 , Figure 8 and Fig.10 The embodiments can all be shown for having Figure 4 The type and size of the image sensor IS are the same as the simulation results of the image sensor IS of the same type and size.

[0092] refer to Figure 3 , discloses a reflective and refractive member 300 having a cut surface parallel to the optical axis OI. In an embodiment, the first cut surface 305 may face a direction parallel to the +Y axis, and the second cut surface 306 may face a direction parallel to the -Y axis. For example, Figure 3 An embodiment is shown in which the angle Ang_A1 between the optical axis OI and the first cutting face 305 is about 0 degrees, and the angle Ang_A2 between the optical axis OI and the second cutting face 306 is about 0 degrees.

[0093] Figure 3 and Figure 4 It can be shown that, for example, Figure 4 The light path tracking simulation shown in is used to detect stray light generated when light having an inclination angle of about 10 degrees relative to the optical axis OI is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis OI by the image sensor IS as shown. For example, Figure 4 The simulation can show the stray light formed on the image sensor IS. The image sensor IS can be arranged on the YZ plane or on a plane parallel to the YZ plane, and Figure 4 In mmlux (or lm / mm2 ) represents the intensity of light incident on a unit area of ​​the image sensor IS.

[0094] refer to Figure 3 , light incident on the lens group 200 may pass through the lens group 200 and then be incident on the incident surface 301 of the reflective and refractive member 300. The light incident through the incident surface 301 may be reflected at least twice inside the reflective and refractive member 300 and then exit through the exit surface 304 to reach the image sensor IS.

[0095] refer to Figure 3 and Figure 4 When the angle Ang_A1 between the optical axis OI and the first cut surface 305 of the reflective and refractive member 300 is about 0 degrees, and the angle Ang_A2 between the optical axis OI and the second cut surface 306 is about 0 degrees, a large amount of stray light reaching the image sensor IS can be detected. Figure 4 , it can be recognized that stray light of several hundreds to several thousands of mmlux (eg, 500 mmlux to 2200 mmlux) is formed on the upper end of the image sensor IS.

[0096] Figure 5 30 is a view showing a camera module including a reflective and refractive member having a first cut face 305 according to an embodiment of the present disclosure. Figure 6 It shows that when light is incident on Figure 5 A view of a simulation result of performing a ray path tracing on a camera module of an embodiment.

[0097] refer to Figure 5 , discloses a reflective and refractive member 300 having a first cut surface 305 tilted relative to an incident surface 301 and a first reflective surface 302 (or tilted relative to an optical axis OI). Figure 5 In the embodiment of the present invention, the first cutting surface 305 may face the direction between the +Y axis and the +X axis (the first direction D1), and the second cutting surface 306 may face the direction parallel to the -Y axis. Figure 5 An embodiment is shown in which the angle Ang_A1 between the optical axis OI and the first cutting face 305 is about 30 degrees, and the angle Ang_A2 between the optical axis OI and the second cutting face 306 is 0 degrees.

[0098] and Figure 3 and Figure 4 The implementation method is the same as Figure 5 and Figure 6 It can be shown that stray light generated when light having an inclination angle of about 10 degrees with respect to the optical axis OI is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis OI is detected through a light path tracking simulation.

[0099] Light incident on the lens group 200 may pass through the lens group 200 and then be incident on the incident surface 301 of the reflective and refractive member 300. The light incident through the incident surface 301 may be reflected at least twice inside the reflective and refractive member 300 and then exit through the exit surface 304 to reach the image sensor IS. Figure 5 , it can be identified that Figure 3 Unlike the embodiment of the present invention, no stray light reaching the image sensor IS is detected.

[0100] refer to Figure 5 and Figure 6 When the angle Ang_A1 between the optical axis OI and the first cut surface 305 of the reflective and refractive member 300 is about 30 degrees and the angle Ang_A2 between the optical axis OI and the second cut surface 306 is about 0 degrees, it can be recognized that stray light reaching the image sensor IS is not detected.

[0101] Figure 7 30 is a view showing a camera module including a reflective and refractive member having a first cut face 305 according to an embodiment of the present disclosure. Figure 8 It shows that when light is incident on Figure 7 A view of a simulation result of performing a ray path tracing on a camera module of an embodiment.

[0102] refer to Figure 7 , discloses a reflective and refractive member 300 in which a first cut surface 305 tilted relative to an incident surface 301 and a first reflective surface 302 (or tilted relative to an optical axis OI) and a second cut surface 306 parallel to the optical axis OI are formed. Figure 7 In the embodiment of the present invention, the first cutting surface 305 may face the direction between the +Y axis and the +X axis (the first direction D1), and the second cutting surface 306 may face the direction parallel to the -Y axis. Figure 8 In an embodiment, an angle Ang_A1 between the optical axis OI and the first cutting surface 305 is about 30 degrees, and an angle Ang_A2 between the optical axis and the second cutting surface 306 is about 0 degrees.

[0103] and Figures 3 to 6 The implementation methods are different. Figure 7 and Figure 8 It can be shown that stray light generated when light having an inclination angle of about 8 degrees with respect to the optical axis OI is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis OI is detected through a light path tracking simulation.

[0104] refer to Figure 7, light incident on the lens group 200 may pass through the lens group 200 and then be incident on the incident surface 301 of the reflective and refractive member 300. The light incident through the incident surface 301 may be reflected at least twice inside the reflective and refractive member 300 and then exit through the exit surface 304 to reach the image sensor IS. Figure 3 Compared with the implementation method of Figure 7 The amount of stray light generated in the embodiment is reduced, but it can be recognized that a small amount of stray light is detected.

[0105] refer to Figure 8 Even when the angle Ang_A1 between the optical axis OI and the first cutting surface 305 of the reflective and refractive member 300 is 30 degrees, and the angle Ang_A2 between the optical axis OI and the second cutting surface 306 is 0 degrees, it can be recognized that the stray light is not completely removed, and a small amount of stray light can be detected according to the angle between the light incident on the lens group and the optical axis OI.

[0106] Fig. 9 is a view illustrating a camera module including a reflective and refractive member having a first cut face and a second cut face according to an embodiment of the present disclosure. Fig.10 It shows that when light is incident on Fig. 9 A view of a simulation result of performing a ray path tracing on a camera module of an embodiment.

[0107] refer to Fig. 9 , discloses a reflective and refractive member 300 having a first cut surface 305 tilted relative to an incident surface 301 and a first reflective surface 302 (or tilted relative to an optical axis OI) and a second cut surface 306 tilted relative to an exit surface 304 and a second reflective surface 303 (or tilted relative to an optical axis OI). Fig. 9 In the embodiment of the present invention, the first cutting surface 305 may face the direction between the +Y axis and the +X axis (the first direction D1), and the second cutting surface 306 may face the direction between the -Y axis and the -X axis (the second direction D2). Here, the first cutting surface 305 and the second cutting surface 306 may be inclined in opposite directions relative to the optical axis OI. For example, in Fig. 9 In an embodiment, an angle Ang_A1 between the optical axis and the first cutting surface 305 is about 30 degrees, and an angle Ang_A2 between the optical axis and the second cutting surface 306 is about -30 degrees.

[0108] and Figure 7 and Figure 8 The implementation method is the same as Fig. 9 and Fig.10It can be shown that stray light generated when light having an inclination angle of about 8 degrees with respect to the optical axis is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis OI is detected through a light path tracking simulation.

[0109] Light incident on the lens group 200 may pass through the lens group 200 and then be incident on the incident surface 301 of the reflective and refractive member 300. The light incident through the incident surface 301 may be reflected at least twice inside the reflective and refractive member 300 and then exit through the exit surface 304 to reach the image sensor IS. Fig.10 , it can be identified that Figure 8 Unlike the embodiment of the present invention, no stray light reaching the image sensor IS is detected.

[0110] refer to Fig.10 When the angle Ang_A1 between the optical axis OI and the first cut surface 305 of the reflective and refractive member 300 is about 30 degrees, and the angle Ang_A2 between the optical axis OI and the second cut surface 306 is about -30 degrees, it can be recognized that stray light reaching the image sensor IS is not detected.

[0111] As mentioned above, in Figures 1 to 10 In an embodiment (e.g., the first embodiment), the camera module 100 including a reflective and refractive component 300 having a first cutting surface 305 inclined relative to the optical axis OI and a second cutting surface 306 inclined relative to the optical axis OI can effectively reduce or prevent the generation of stray light (or flare) for light incident near the optical axis OI.

[0112] Regarding the cross-sectional lengths of the cut surfaces of the reflective and refractive member 300, according to an embodiment of the present disclosure, in order to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare), the cross-sectional length d1 (distance 1) of the first cut surface 305 and / or the cross-sectional length d2 (distance 2) of the second cut surface 306 can be set to have a predetermined range.

[0113] For example, the cross-sectional length d1 of the first cutting surface 305 and / or the cross-sectional length d2 of the second cutting surface 306 may be formed to have a length of 0.1 mm to 1.0 mm.

[0114] According to another embodiment, the cross-sectional length d1 of the first cut surface 305 and / or the cross-sectional length d2 of the second cut surface 306 of the reflective and refractive member 300 may be formed to have a length that satisfies a predetermined range relative to the effective image height of the image sensor IS. For example, the electronic device including the reflective and refractive member 300 may satisfy the following Formula 6 and Formula 7 to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare).

[0115] [Formula 6]

[0116] 0.04×IH <d1<0.20×IH

[0117] [Formula 7]

[0118] 0.04×IH <d2<0.20×IH

[0119] Here, d1 of Formula 6 may be the cross-sectional length of the first cutting surface 305, d2 of Formula 7 may be the cross-sectional length of the second cutting surface 306, IH may be the effective image height of the image sensor IS, and the “effective image height” may mean half of the diagonal length of the image sensor IS. Figure 4 , Figure 6 , Figure 8 and Fig.10 As shown in , the effective image height of the image sensor IS according to the embodiment may be about 3 mm. When the effective image height of the image sensor IS is 3 mm, each of the cross-sectional length d1 of the first cut surface 305 and the cross-sectional length d2 of the second cut surface 306 of the reflective and refractive member 300 may have a range of 0.12 mm to 0.6 mm, which may be helpful in reducing or preventing stray light. According to the embodiment, the cross-sectional length d1 of the first cut surface 305 and the cross-sectional length d2 of the second cut surface 306 may have different lengths. For example, Fig.10 Shows that when Fig. 9 The simulation results are shown in FIG. 1 when the cross-sectional length d1 of the first cutting surface 305 is about 0.54 mm and the cross-sectional length d2 of the second cutting surface 306 is about 0.26 mm. Figures 1 to 10 In the embodiment (first embodiment), the cross-sectional length d1 of the first cutting surface 305 may be longer than the cross-sectional length d2 of the second cutting surface 306, and may have the best effect of reducing or preventing stray light.

[0120] Fig.11 is a view showing a camera module 100 including a reflective and refractive member 400 according to an embodiment of the present disclosure. Fig.12a 4 is an enlarged view showing a vertex portion between an incident portion 401 a of a first surface 401 of a reflective and refractive member 400 and a first reflective surface 402 .

[0121] Figure 12b 4 is an enlarged view showing a vertex portion between an exit portion 401 b of a first surface 401 of a reflective and refractive member 400 and a second reflective surface 403 . Fig.13 4 is a view showing a camera module 100 including a first cutting face 405 and a second cutting face 406 parallel to an optical axis according to an embodiment of the present disclosure. Fig.14is a diagram showing a simulation result according to performing light path tracing when light is incident on the camera module 100 according to an embodiment of the present disclosure.

[0122] In the following, in the accompanying drawings (for example, Figures 11 to 20 ) is not given in the detailed description of the above reference Figures 1 to 10 The components of the camera module 100 described are the same as those of the camera module 100 . Figures 11 to 20 The camera module 100' may include and / or may be similar in many respects to the above referenced Figures 1 to 10 The camera module 100 described above may include additional features not mentioned above. Figures 11 to 20 The reflective and refractive member 400 may include and / or may be similar in many respects to Figures 1 to 10 The reflective and refractive member 300 may include additional features not mentioned above. Fig.11 The camera module 100 ′ shown in is a telephoto camera including a lens group 200 including at least one lens and an image sensor IS, and may be formed as a folded optical lens system (bent optical lens system) configured to be bent at least twice along a propagation direction of light. Figures 11 to 20 The embodiment shown in the figure may also be referred to as a folded camera. The folded camera may include a reflective and refractive member 400 capable of reflecting and / or refracting the propagation direction of light at least twice between a lens group 200 including at least one lens and an image sensor IS so as to bend the propagation direction of light at least twice.

[0123] The image sensor IS may be configured to detect light reflected and / or refracted by the reflective and refractive member 400 and incident on the imaging surface img. For example, light incident from the outside of the camera module 100' may be detected by the image sensor IS via the lens group 200 and the reflective and refractive member 400, and the electronic device may obtain an object image based on a signal and / or information detected by the image sensor IS.

[0124] According to an embodiment, the reflection and refraction member 400 may be disposed between the lens group 200 and the image sensor IS. Providing the reflection and refraction member 400 between the lens group 200 and the image sensor IS may include the reflection and refraction member 400 being disposed between the optical paths on the optical axis OI formed when the lens group 200 and the image sensor IS are aligned. Light incident on the lens group 200 from the outside may be reflected at least twice by the reflection and refraction member 400, and may be focused or aligned with the image sensor IS. Therefore, the optical lens system from the lens group 200 to the image sensor IS may be reduced in size.

[0125] The reflection and refraction member 400 may include a prism, a mirror that transmits light, a mirror that reflects light, and / or an opening. For example, the reflection and refraction member 400 may be provided with a prism on one side and a mirror that reflects light on the other side. In addition, the reflection and refraction member 400 may be configured so that at least two surfaces of the reflection and refraction member 400 are formed by prisms to reflect and / or refract light. According to an embodiment, the reflection and refraction member 400 may be formed by a combination of a plurality of prisms and / or mirrors. According to an embodiment, the reflection and refraction member 400 may be formed by combining a plurality of prism blocks and / or mirror blocks. For example, the reflection and refraction member 400 may be formed by combining prism blocks and / or mirror blocks having a triangular cross section and / or a rectangular cross section to form a structure such as Fig.11 A reflecting and refractive member 400 is shown in FIG.

[0126] refer to Fig.11 , the reflective and refractive 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 be referred to as an incident surface (e.g., Figure 1 However, unlike Figures 1 to 10 The implementation method, in Fig.11 In the embodiment, the light may not be emitted through the fourth surface 404 facing the first surface 401, and the light may be emitted through the first surface 401 on which the light is incident.

[0127] refer to Figure 11 to Figure 12b , the light IL passing through the lens group 200 may be incident through a portion 401a (or the incident portion 401a) of the first surface 401, and the light EL reflected from the second reflective surface 403 may be emitted through another portion 401b (or the emission portion 401b) of the first surface 401. According to an embodiment, the reflective and refractive member 400 may have a shape in which the first surface 401 and the fourth surface 404 are substantially parallel and the first reflective surface 402 and the second reflective surface 403 are not parallel. According to an embodiment, the reflective and refractive 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, the first surface 401 may be described as being inclined in the same direction as the fourth surface 404, and the first reflective surface 402 may be described as being inclined in a different direction from the second reflective surface 403. In Figure 11 to Figure 12bIn an embodiment, for light passing through the reflective and refracting member 400, a direction in which the light is incident and a direction in which the light is emitted may face opposite directions with respect to light propagating along the optical axis OI.

[0128] refer to Fig.12a , the first reflective surface 402 may be formed to be inclined relative to the first surface 401. When the cross section of the edge portion of the reflective and refractive member 400 is magnified, the reflective and refractive member 400 may be conceptually represented as a triangle having three vertices P7, P8, and P9. The light IL passing through the lens group 200 may pass through the incident portion 401a of the first surface 401 and enter the reflective and refractive member 400. Here, the vertex P8 may be a vertex between the first reflective surface 402 and the first surface 401. For example, the inclination angle a between the first reflective surface 402 and the first surface 401 formed at the vertex P8 may be set to vary according to the embodiment. Among the three vertices P7, P8, and P9, the vertex P7 may have a value of approximately 90 degrees, and the inclination angle b at the vertex P9 may be set to a value that may be automatically determined when the inclination angle a at the vertex P8 is specified. As described in detail later, the reflective and refractive member 400 according to an embodiment of the present disclosure may be formed with a cut surface for reducing and / or preventing stray light, and as Fig.12a As shown in FIG. 4 , the cut facet located on the side of the incident portion 401 a of the first surface 401 may face the third direction D3 (direction 3 ).

[0129] refer to Figure 12b , when the cross section of another edge portion of the reflection and refraction member 400 is magnified, the reflection and refraction member 400 can be conceptually represented as a triangle having three vertices P10, P11, and P12. Here, the vertex P11 can be the vertex between the second reflection surface 403 and the exit portion 401b of the first surface 401. For example, the inclination angle c formed between the second reflection surface 403 and the first surface 401 at the vertex P11 can be set to vary according to the embodiment. Among the three vertices P10, P11, and P12, the vertex P10 can have a value of approximately 90 degrees, and the inclination angle d at the vertex P12 can be set to a value that can be automatically determined when the inclination angle c at the vertex P11 is specified. As described in detail later, the reflection and refraction member 400 according to an embodiment of the present disclosure may have a cut surface for reducing and / or preventing stray light, and as Figure 12b As shown in FIG. 4 , the cut surface on the emission portion 401b of the first surface 401 may face the fourth direction D4 (direction 4). According to an embodiment of the present disclosure, the reflective and refractive member 400 may have a first cut surface (described below) inclined relative to the first surface 401 and the first reflective surface 402 at the edge of the first reflective surface 402. Fig.19and a second cutting surface (described below) inclined relative to the first surface 401 and the second reflecting surface 403 at the edge of the second reflecting surface 403. Fig.19 of the second cutting surface 406).

[0130] Reference together Fig.12a and Figure 12b , the first cutting surface 405 may be formed to face the third direction (eg, Fig.12a The second cutting surface 406 may be formed to face a direction different from the third direction. For example, the second cutting surface 406 may be formed to face a fourth direction different from the third direction (eg, Figure 12b D4). The reflective and refractive member 400 of the present disclosure may include a first cutting face 405 and a second cutting face 406, so as to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare). According to an embodiment, the first cutting face 405 may be a cross section cut along a third imaginary line l3, and the third imaginary line l3 is drawn to have a predetermined angle in the counterclockwise direction (-) from the first imaginary line l1 parallel to the optical axis OI or a point on the optical axis OI. The first cutting face 405 may be a cross section cut in the propagation direction and the tilt direction of the light parallel to the optical axis OI. According to an embodiment, the second cutting face 406 may be a cross section cut along a second imaginary line l2, and the second imaginary line l2 is drawn to have a predetermined angle (+) in the clockwise direction from the first imaginary line l1 parallel to the optical axis OI or a point on the optical axis OI. The second cutting face 406 may be a cross section cut in the propagation direction and the tilt direction of the light parallel to the optical axis OI.

[0131] In an embodiment (second embodiment), the first cutting face 405 and the second cutting face 406 may be formed to be inclined to the opposite side relative to the optical axis OI. For example, the first cutting face 405 may be formed to form a predetermined angle with the optical axis OI in the counterclockwise direction (-), and the second cutting face 406 may be formed to form a predetermined angle with the optical axis OI in the clockwise direction (+). When the first cutting face 405 and the second cutting face 406 face the same direction (e.g., clockwise (+) or counterclockwise (-)) relative to the optical axis OI, the light path of stray light propagating in the internal space of the reflection and refraction member 400 cannot be reduced or removed, but exists, and in some cases, another light path may be formed. The reflection and refraction member 400 of the present disclosure may include the first cutting face 405 and the second cutting face 406 inclined to the opposite side relative to the optical axis OI as described above, so as to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare).

[0132] According to an embodiment, the camera module 100 ′ including the reflective and refractive member 400 may satisfy the following Formula 1 and / or Formula 2 to reduce or prevent the occurrence of stray light (or reduce or prevent the occurrence of flare).

[0133] [Formula 1]

[0134] 5<|Ang_A1|<50

[0135] [Formula 2]

[0136] 5<|Ang_A2|<50

[0137] Here, Ang_A1 of Formula 1 may be an angle between the optical axis OI and the first cutting face 405, and Ang_A2 of Formula 2 may be an angle between the optical axis OI and the second cutting face 406. When the angle between the first cutting face 405 and the second cutting face 406 is less than the lower limit in Formula 1 and Formula 2, the possibility of stray light (or flare) occurring may increase, and the intensity of the stray light (or flare) may also increase. Alternatively, when the angle between the first cutting face 405 and the second cutting face 406 is greater than the upper limit in Formula 1 and Formula 2, the processing of the reflective and refractive member 400 may be difficult, and a new sharp angle may be formed by the processed surface (e.g., the first cutting face 405 and the second cutting face 406), making it difficult to process the reflective and refractive member 400.

[0138] According to an embodiment, the camera module 100 ′ including the reflective and refractive member 400 may satisfy the following Formula 3 to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare).

[0139] [Formula 3]

[0140] -10 <Ang_A1 / Ang_A2<-0.1

[0141] Formula 3 may mean the angle between the optical axis OI and the first cutting surface 405 (eg, Fig.12a Ang_A1 in FIG. 4 ) and the angle between the optical axis OI and the second cutting surface 406 (eg, Figure 12b As described above, the present disclosure may include a first cutting face 405 and a second cutting face 406 facing opposite directions relative to the optical axis OI, thereby reducing or preventing the generation of stray light (or reducing or preventing the generation of flare).

[0142] According to an embodiment, in order to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare), at least one of the first reflective surface 401 or the second reflective surface 403 may be formed to satisfy the condition of total reflection. For example, the reflective and refractive member 400 may satisfy the following formula 4.

[0143] [Formula 4]

[0144] 25 <Vd_1<95

[0145] Here, Vd_1 of Formula 4 represents the dispersion value (or Abbe number) of the reflective and refractive member 400, which may be related to the refractive index of the reflective and refractive member 400. The reflective and refractive member 400 may be located between the lens group 200 and the imaging surface img of the image sensor IS relative to the optical axis OI as the path through which the light moves, thereby affecting aberrations such as curvature and / or chromatic aberrations. When the dispersion value of the reflective and refractive member 400 is greater than the upper limit value, it is beneficial to correct chromatic aberrations, but due to the soft material, it may be difficult to assemble the lens assembly and manage the process. On the other hand, when the dispersion value becomes less than the lower limit of the reflective and refractive member 400, the overall characteristics of the material can be improved, but it may be difficult to control chromatic aberrations.

[0146] In addition, for example, the reflective and refractive member 400 can allow at least one of the first cutting surface 405 or the second cutting surface 406 to have an illuminance (roughness) that can relatively reduce the reflectivity of light passing through the at least one cutting surface. At least one of the first cutting surface 405 or the second cutting surface 406 can be corroded or blackened to obtain an illuminance that can relatively reduce the reflectivity of light. Alternatively, by printing or depositing a coating on at least one of the first cutting surface 405 or the second cutting surface 406, an illuminance (roughness) that can relatively reduce the reflectivity can be obtained.

[0147] According to an embodiment, the incident surface (e.g., the incident portion 401a or the exit portion 401b) of the reflective and refractive member 400 may block about 80% or more of light of about 700nm or more, thereby blocking visible light or light with a longer wavelength (e.g., infrared rays).

[0148] Meanwhile, according to an embodiment of the present disclosure, the lens assembly including the lens group 200 , the image sensor IS, and the reflective and refractive member 400 may satisfy the following Formula 5.

[0149] [Formula 5]

[0150] 5 <FOV<35

[0151] Here, the FOV of Formula 5 may be the field of view of the electronic device 101 including the lens assembly. The electronic device including the reflective and refractive member 400 of the present disclosure may be targeted at a folded optical lens system. When the field of view of the electronic device including the lens assembly is about 35 degrees or more, the focal length decreases, and the distance between the image sensor IS and the lens group 200 decreases, making it difficult to set the reflective and refractive member 400. On the other hand, when the field of view is about 5 degrees or less, the focal length may be too long, and the size of the entire optical lens system may increase.

[0152] In the following, reference Figures 13 to 20 The first cutting face 405 and the second cutting face 406 are described in more detail.

[0153] Fig.13 1 is a view showing a camera module 100 ′ including a reflective and refractive member 400 having a cut face 405 parallel to an optical axis according to an embodiment of the present disclosure. Fig.14 It shows that when light is incident on Fig.13 FIG. 1 is a diagram showing a simulation result of performing light path tracing on the camera module 100 ′ according to an embodiment of the present invention. Fig.14 An image sensor IS having a width (length in the Z-axis direction) of about 5 mm and a length (length in the Y-axis direction) of about 4 mm is shown, for example. In this case, Fig.14 The effective image height IH of the image sensor can be regarded as having a size of about 3 mm. In the following, Fig.16 , Fig.18 and Fig. 20 The embodiments can all be shown with Fig.14 The type and size of the image sensor IS are the same as the simulation results of the image sensor IS of the same type and size.

[0154] refer to Fig.13 , discloses a reflective and refractive member 400 having a cut surface parallel to the optical axis. Fig.13 In an embodiment, the first cutting surface 405 may face, for example, a direction parallel to the +Y axis, and the second cutting surface 406 may face, for example, a direction parallel to the -Y axis. Fig.13 In an embodiment, an angle Ang_A1 between the optical axis and the first cutting surface 405 is approximately 0 degrees, and an angle Ang_A2 between the optical axis and the second cutting surface 406 is approximately 0 degrees.

[0155] Fig.13 and Fig.14 It can be shown that stray light generated when light having an inclination angle of about -10 degrees relative to the optical axis is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis is detected by, for example, a light path tracking simulation. Fig.14The simulation can show the stray light formed on the image sensor IS. The image sensor IS can be arranged on the YZ plane or on a plane parallel to the YZ plane, and Fig.14 In mmlux (or lm / mm 2 ) represents the intensity of light incident on a unit area of ​​the image sensor IS.

[0156] refer to Fig.13 , light incident on the lens group 200 may pass through the lens group 200 and then be incident through a portion 401a of the first surface 401 of the reflective and refractive member 400. The light incident through the portion 401a of the first surface 401 may be reflected at least twice or more inside the reflective and refractive member 400 and then be emitted again through another portion 401b of the first surface 401, and may reach the image sensor IS spaced apart from the another portion 401b of the first surface 401 by a predetermined distance.

[0157] refer to Fig.14 When the angle Ang_A1 between the optical axis and the first cutting surface 405 is about 0 degrees, and the angle Ang_A2 between the optical axis and the second cutting surface 406 is about 0 degrees, it can be recognized that the stray light reaching the image sensor IS is detected.

[0158] Fig.15 is a view showing a camera module 100 ′ including a reflective and refractive member 400 having a first cut face 405 according to an embodiment of the present disclosure. Fig.16 It shows that when light is incident on Fig.15 FIG. 1 is a diagram showing a simulation result of performing light path tracing on the camera module 100 ′ according to an embodiment of the present invention.

[0159] refer to Fig.15 , discloses a reflective and refractive member 400 having a first cut surface 405 inclined relative to a first surface 401 and a first reflective surface 402 (or inclined relative to an optical axis). Fig.16 In an embodiment, an angle Ang_A1 between the optical axis OI and the first cutting surface 405 is about -30 degrees, and an angle Ang_A2 between the optical axis and the second cutting surface 406 is about 0 degrees.

[0160] and Fig.13 and Fig.14 The implementation method is the same as Fig.15 and Fig.16 It can be shown that stray light generated when light having an inclination angle of about −10 degrees with respect to the optical axis is incident on an edge portion of the lens group 200 spaced apart from the optical axis by a predetermined distance is detected through a light path tracking simulation.

[0161] Light incident on the lens group 200 may pass through the lens group 200 and then be incident on a portion 401a of the first surface 401 of the reflective and refractive member 400. The light incident through the first surface 401 may be reflected at least twice inside the reflective and refractive member 400 and then exit through another portion 401b of the first surface 401 and reach the image sensor IS. Fig.16 , it can be identified that Fig.14 Unlike the embodiment of the present invention, no stray light reaching the image sensor IS is detected.

[0162] refer to Fig.16 , when the angle Ang_A1 between the optical axis and the first cutting surface 405 is about -30 degrees, and the angle Ang_A2 between the optical axis and the second cutting surface 306 is about 0 degrees, it can be recognized that no stray light reaching the image sensor IS is detected.

[0163] Fig.17 is a view showing a camera module 100 ′ including a reflective and refractive member 400 having a first cut face 405 according to an embodiment of the present disclosure. Fig.18 is a diagram showing the effect of light incident on the Fig.17 FIG. 1 is a diagram showing a simulation result of performing light path tracing on the camera module 100 ′ according to an embodiment of the present invention.

[0164] refer to Fig.17 , discloses a reflective and refractive member 400 having a first cut surface 405 inclined relative to a first surface 401 and a first reflective surface 402 (or inclined relative to an optical axis) and a second cut surface 406 parallel to the optical axis. Fig.18 In an embodiment, an angle Ang_A1 between the optical axis and the first cutting surface 405 is about -30 degrees, and an angle Ang_A2 between the optical axis and the second cutting surface 406 is about 0 degrees.

[0165] and Figures 13 to 16 The implementation methods are different. Fig.17 and Fig.18 It can be shown that stray light generated when light having an inclination angle of about 8 degrees with respect to the optical axis is incident on an edge portion of the lens group 200 spaced apart from the optical axis by a predetermined distance is detected through a light path tracking simulation.

[0166] refer to Fig.17 , light incident on the lens group 200 may pass through the lens group 200 and then be incident on a portion 401a of the first surface 401 of the reflective and refractive member 400. The light incident through the first surface 401 may be reflected at least twice inside the reflective and refractive member 400 and then exit through another portion 401b of the first surface 401 and reach the image sensor IS. Even in Fig.17 In an embodiment of the present invention, it can also be recognized that a small amount of stray light is detected.

[0167] refer to Fig.18 When the angle Ang_A1 between the optical axis and the first cutting surface 405 is about -30 degrees and the angle Ang_A2 between the optical axis and the second cutting surface 406 is about 0 degree, it can be recognized that the stray light is not removed but detected according to the angle between the optical axis OI and the light incident on the lens group.

[0168] Fig.19 1 is a view showing a camera module 100 ′ including a reflective and refractive member 400 having a first cut face 405 and a second cut face 406 according to an embodiment of the present disclosure. Fig. 20 It shows that when light is incident on Fig.19 FIG. 1 is a diagram showing a simulation result of performing light path tracing on the camera module 100 ′ according to an embodiment of the present invention.

[0169] refer to Fig.19 , discloses a reflective and refractive member 400 having a first cut surface 405 tilted relative to a portion 401a of a first surface 401 and a first reflective surface 402 (or tilted relative to an optical axis) and a second cut surface 406 tilted relative to the first surface 401 and the second reflective surface 403 (or tilted relative to an optical axis). For example, Fig. 20 An embodiment is shown in which the angle Ang_A1 between the optical axis OI and the first cutting face 405 is about -30 degrees, and the angle Ang_A2 between the optical axis OI and the second cutting face 406 is about +30 degrees.

[0170] and Fig.17 and Fig.18 The implementation method is the same as Fig.19 and Fig. 20 It can be shown that stray light generated when light having an inclination angle of about 8 degrees with respect to the optical axis OI is incident on an edge portion of the lens group 200 at a predetermined distance from the optical axis OI is detected through a light path tracking simulation.

[0171] Light incident on the lens group 200 may pass through the lens group 200 and then be incident on a portion 401a of the first surface 401 of the reflective and refractive member 400. The light incident through the first surface 401 may be reflected at least twice inside the reflective and refractive member 400 and then exit through another portion 401b of the first surface 401 and reach the image sensor IS. Fig.19 , it can be identified that Fig.17 Unlike the embodiments of the present invention, no detectable stray light can reach the image sensor IS.

[0172] refer to Fig. 20, when the angle Ang_A1 between the optical axis OI and the first cutting surface 305 is about -30 degrees, and the angle Ang_A2 between the optical axis and the second cutting surface 306 is about +30 degrees, it can be recognized that the stray light reaching the image sensor IS is not detected.

[0173] As mentioned above, in Figures 11 to 20 In an embodiment (eg, the second embodiment), the camera module 100' including the reflective and refractive member 400 having the first cut surface 405 and the second cut surface 406 can effectively reduce and / or prevent the generation of stray light (and / or flare) for light incident close to the optical axis.

[0174] Regarding the cross-sectional lengths of the cutting surfaces of the reflective and refractive member 400, according to an embodiment of the present disclosure, in order to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare), the cross-sectional length d3 (distance 3) of the first cutting surface 405 and / or the cross-sectional length d4 (distance 4) of the second cutting surface 406 can be set to have a predetermined range.

[0175] For example, the cross-sectional length d3 of the first cutting surface 405 and / or the cross-sectional length d4 of the second cutting surface 406 may be formed to have a length of 0.1 mm to 1.0 mm.

[0176] According to another embodiment, the cross-sectional length d3 of the first cut surface 405 and / or the cross-sectional length d4 of the second cut surface 406 of the reflective and refractive member 400 may be formed to have a length that satisfies a predetermined range relative to the effective image height of the image sensor IS. For example, the electronic device including the reflective and refractive member 400 may satisfy the following Formula 8 and Formula 9 to reduce or prevent the generation of stray light (or reduce or prevent the generation of flare).

[0177] [Formula 8]

[0178] 0.04×IH <d3<0.20×IH

[0179] [Formula 9]

[0180] 0.04×IH <d4<0.20×IH

[0181] Here, d3 of Formula 8 may be the cross-sectional length of the first cutting surface 405, d4 of Formula 9 may be the cross-sectional length of the second cutting surface 406, IH may be the effective image height of the image sensor IS, and the “effective image height” may mean half of the diagonal length of the image sensor IS. Fig.14 , Fig.16 , Fig.18 and Fig. 20As shown in , the effective image height of the image sensor IS according to the embodiment may be about 3 mm. When the effective image height of the image sensor IS is 3 mm, each of the cross-sectional length d3 of the first cut surface 405 and the cross-sectional length d4 of the second cut surface 406 of the reflective and refractive member 400 may have a range of 0.12 mm to 0.6 mm, which may be helpful in reducing or preventing stray light. According to the embodiment, the cross-sectional length d3 of the first cut surface 405 and the cross-sectional length d4 of the second cut surface 406 may have substantially the same length. For example, Fig. 20 Shows when Fig.19 The simulation results are shown in FIG. 1 when the cross-sectional length d3 of the first cutting surface 405 is about 0.42 mm and the cross-sectional length d4 of the second cutting surface 406 is about 0.38 mm. Figures 11 to 20 In the embodiment (second embodiment), the cross-sectional length d3 of the first cutting surface 405 can be substantially the same as the cross-sectional length d4 of the second cutting surface 406, and can have the best effect of reducing or preventing stray light.

[0182] The electronic device according to an embodiment of the present disclosure may be one of various types of devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. The electronic device according to the embodiment is not limited to the above-mentioned devices.

[0183] It should be understood that the embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, and include various changes, equivalents or alternatives for the corresponding embodiments. With regard to the description of the accompanying drawings, similar reference numerals may be used to represent similar or related elements. It will be understood that the nouns in the singular form corresponding to the project may include one or more things, unless the relevant context clearly indicates otherwise. 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 all possible combinations of the items listed together in the corresponding phrase in the phrase. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “coupled to another element (e.g., the second element)”, “coupled to another element (e.g., the second element)”, “connected to another element (e.g., the second element)”, “connected to another element (e.g., the second element)”, with or without the terms “operably” or “communicatively”, it means that the element may be directly (e.g., wired) coupled to another element, wirelessly coupled to another element, or coupled to another element via a third element.

[0184] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or the smallest unit or portion of the single integrated component. For example, depending on the implementation, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0185] Embodiments of the present disclosure may be implemented as software (e.g., a program) including one or more instructions that may be stored in a storage medium (e.g., an internal memory, an external memory) that can be read by a machine (e.g., an electronic device). For example, under the control of a processor, a processor of a machine (e.g., an electronic device) may call at least one of the one or more instructions stored in a storage medium and execute the at least one instruction using one or more other components or without using one or more other components. This may allow the machine to be operated to perform at least one function according to at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by a decoder. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" may simply mean that the storage medium is a tangible device and may not include a signal (e.g., an electromagnetic wave), but this term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0186] According to an embodiment, the method according to an embodiment of the present disclosure may be included and provided in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)) or downloaded via an application store (e.g., Play Store TM ) publishes (e.g., downloads or uploads) the computer program product online, or distributes (e.g., downloads or uploads) the computer program product directly between two user devices (e.g., smart phones). If published 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 at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0187] According to an embodiment, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. Some of the multiple entities may be separately arranged in different components. According to an embodiment, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform one or more functions of each component in the multiple components in the same or similar manner as one or more functions performed by a corresponding component in the multiple components before the integration. According to an embodiment, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or heuristically, or one or more operations in the operations may be run in different orders or omitted, or one or more other operations may be added.

[0188] According to an embodiment of the present disclosure, an electronic device may include: a lens group 200 including at least one lens; an image sensor IS aligned with the lens group along an optical axis OI; and a reflective and refractive member 300 or 400 disposed between the lens group and the image sensor on the optical axis. The reflective and refractive member may include: an incident surface 301 or 401 on which light passing through the lens group is incident; a first reflective surface 302 or 402 inclined relative to the incident surface; and a second reflective surface 303 or 403 formed to be inclined relative to the incident surface and spaced apart from the first reflective surface. A first cut surface 305 or 405 inclined relative to the incident surface and the first reflective surface may be formed at an edge of the first reflective surface. A second cut surface 306 or 406 inclined relative to the incident surface and the second reflective surface may be formed at an edge of the second reflective surface. In this case, the first cut surface may face a first direction D1 or D3, and the second cut surface may face a second direction D2 or D4 different from the first direction.

[0189] According to an embodiment, the reflective and refractive member 300 may include an exit surface 304 through which light passing through the reflective and refractive member exits, and the exit surface 304 may be formed to be spaced apart from the incident surface 301 .

[0190] According to an embodiment, the reflective and refractive member 300 may have a parallelogram cross-sectional shape in which the incident surface 301 and the exit surface 304 are parallel and the first reflective surface 302 and the second reflective surface 303 are parallel.

[0191] According to an embodiment, the first cutting surface 305 may be a cross-section cut along a second imaginary line l2, which is drawn to have a predetermined angle in a clockwise direction (+) from a point on the optical axis or a first imaginary line l1 parallel to the optical axis, and the second cutting surface 306 may be a cross-section cut along a third imaginary line l3, which is drawn to have a predetermined angle in a counterclockwise direction (-) from a point on the optical axis or a first imaginary line l1 parallel to the optical axis.

[0192] According to an embodiment, in the reflection and refraction member 400 , light passing through the lens group may be incident through a portion 401 a of the incident surface 401 , and light reflected from the second reflection surface 403 may exit through another portion 401 b of the incident surface 401 .

[0193] According to an embodiment, the reflective and refractive member 400 may have a trapezoidal cross-sectional shape such that the reflective and refractive member 400 includes a surface 404 parallel to the incident surface 401 , and the first reflective surface 402 is not parallel to the second reflective surface 403 .

[0194] According to an embodiment, the first cutting surface 405 may be a cross section cut along a third imaginary line l3, which is drawn to have a predetermined angle in the counterclockwise direction (-) from a point on the optical axis or the first imaginary line l1 parallel to the optical axis, and the second cutting surface 406 may be a cross section cut along a second imaginary line l2, which is drawn to have a predetermined angle in the clockwise direction (+) from a point on the optical axis or the first imaginary line l1 parallel to the optical axis.

[0195] According to an embodiment, the electronic device may satisfy the following Formula 1.

[0196] [Formula 1]

[0197] 5<|Ang_A1|<50

[0198] (Wherein, Ang_A1 in Formula 1 is the angle between the optical axis and the first cutting surface).

[0199] According to an embodiment, the electronic device may satisfy the following Formula 2.

[0200] [Formula 2]

[0201] 5<|Ang_A2|<50

[0202] (Wherein, Ang_A2 in Formula 2 is the angle between the optical axis and the second cutting surface).

[0203] According to an embodiment, the electronic device may satisfy the following Formula 3.

[0204] [Formula 3]

[0205] -10 <Ang_A1 / Ang_A2<-0.1

[0206] (wherein Ang_A1 in Formula 3 is the angle between the optical axis and the first cutting surface, and Ang_A2 in Formula 3 is the angle between the optical axis and the second cutting surface).

[0207] According to an embodiment, at least one of the first reflective surface or the second reflective surface may satisfy a condition of total reflection.

[0208] According to an embodiment, the electronic device may satisfy the following Formula 4.

[0209] [Formula 4]

[0210] 25 <Vd_1<95

[0211] (Wherein, Vd_1 in Formula 4 is the dispersion value of the reflective and refractive components).

[0212] According to an embodiment, at least one of the first cut surface or the second cut surface may have a roughness capable of relatively reducing the reflectivity of light passing through the at least one cut surface, or may be subjected to a coating or blackening process.

[0213] According to an embodiment, the electronic device may satisfy the following Formula 5.

[0214] [Formula 5]

[0215] 5 <FOV<35

[0216] (Wherein, FOV in Formula 5 is the field of view of the electronic device 101 including the lens assembly).

[0217] According to an embodiment, an electronic device may be provided in which a lens assembly including a lens group, an image sensor, and a reflective and refractive member forms a folded optical lens system, in which the path of light incident on the lens group may be reflected or refracted at least twice, and an image stabilization function may be performed by moving or rotating the reflective and refractive member. According to an embodiment of the present disclosure, the electronic device may include: a lens group 200 including at least one lens; an image sensor that may be aligned with the lens group along an optical axis OI; and at least one reflective and refractive member disposed between the lens group and the image sensor on the optical axis. A lens assembly including a lens group, an image sensor, and a reflective and refractive member may form a folded optical lens system in which the path of light incident on the lens group is reflected or refracted at least twice. Among at least one reflection and refraction member, the reflection and refraction member 300 or 400 closest to the image side of the image sensor may include: an incident surface 301 or 401, on which light passing through the lens group may be incident; a first reflection surface 302 or 402, which is inclined relative to the incident surface; and a second reflection surface 303 or 403, which is formed to be inclined relative to the incident surface and spaced apart from the first reflection surface. A first cut surface 305 or 405 inclined relative to the incident surface and the first reflection surface may be formed at the edge of the first reflection surface. A second cut surface 306 or 406 inclined relative to the incident surface and the second reflection surface may be formed at the edge of the second reflection surface. In this case, the first cut surface may face the first direction D1 or D3, and the second cut surface may face the second direction D2 or D4 different from the first direction.

[0218] According to an embodiment, among at least one reflection and refraction member, the reflection and refraction member 300 closest to the image side may include an incident surface 301 on which light passing through the lens group is incident and an exit surface 304 from which light reflected from the second reflection surface 303 exits, the exit surface 304 may be formed to be spaced apart from the incident surface 301, and the reflection and refraction member 300 has a parallelogram cross-sectional shape in which the incident surface 301 and the exit surface 304 are parallel to each other and the first reflection surface 302 and the second reflection surface 303 are parallel to each other.

[0219] According to an embodiment, among at least one reflection and refraction member, the reflection and refraction member 400 closest to the image side can be configured so that light passing through the lens group is incident through a portion 401a of the incident surface 401, and light reflected from the second reflection surface 403 is emitted through another portion 401b of the incident surface 401, and the reflection and refraction member 400 includes a surface 404 parallel to the incident surface 401, and the first reflection surface 402 is not parallel to the second reflection surface 403.

[0220] According to an embodiment, among the at least one reflective and refractive member, the reflective and refractive member 300 or 400 closest to the image side may satisfy the following Formula 1 and Formula 2,

[0221] [Formula 1]

[0222] 5<|Ang_A1|<50

[0223] [Formula 2]

[0224] 5<|Ang_A2|<50

[0225] (wherein Ang_A1 in Formula 1 is the angle between the optical axis and the first cutting surface, and Ang_A2 in Formula 2 is the angle between the optical axis and the second cutting surface).

[0226] According to an embodiment, the following formula 3 may be satisfied,

[0227] [Formula 3]

[0228] -10 <Ang_A1 / Ang_A2<-0.1

[0229] (wherein Ang_A1 in Formula 3 is the angle between the optical axis and the first cutting surface, and Ang_A2 in Formula 3 is the angle between the optical axis and the second cutting surface).

[0230] Although certain exemplary embodiments of the present disclosure are shown and described, it will be apparent to those skilled in the art that various changes in form and detail may be made to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims. For example, in a specific embodiment of the present disclosure, the specific shape or size of the lens, reflective and refractive components, and image sensor of the present disclosure may be appropriately set according to the structure, specifications, or actual use environment of the lens assembly actually manufactured or the electronic device equipped with the lens assembly.

Claims

1. Electronic devices, including: at least one lens; an image sensor (IS) aligned with the at least one lens along an optical axis (OI); as well as a reflective and refractive member (300 or 400) disposed between the at least one lens and the image sensor on the optical axis, Wherein, the reflecting and refractive components include: an incident surface (301 or 401) on which the light passing through the at least one lens is incident; A first reflecting surface (302 or 402) is inclined relative to the incident surface; and a second reflecting surface (303 or 403), inclined relative to the incident surface and spaced apart from the first reflecting surface; The first cutting surface (305 or 405) is inclined relative to the incident surface and is formed at a first edge of the first reflecting surface. The second cutting surface (306 or 406) is inclined relative to the incident surface and is formed at the second edge of the second reflecting surface. wherein the first cutting surface faces a first direction, and The second cutting surface faces a second direction different from the first direction.

2. The electronic device according to claim 1, wherein: The reflective and refractive member (300) further includes an exit surface (304) spaced apart from the incident surface (301).

3. The electronic device according to claim 2, wherein: The incident surface (301) and the exit surface (304) are parallel to each other, and Wherein, the first reflecting surface (302) and the second reflecting surface (303) are parallel to each other.

4. The electronic device according to any one of claims 1 to 3, wherein: The first cutting surface (305) is a first cross section cut along a second imaginary line (l2), the second imaginary line (l2) having a first predetermined angle in a clockwise direction (+) from a first point on a first imaginary line (l1) parallel to the optical axis, and The second cutting surface (306) is a second cross section cut along a third imaginary line (l3), and the third imaginary line (l3) has a second predetermined angle in a counterclockwise direction (-) starting from a second point on the first imaginary line (l1) parallel to the optical axis.

5. The electronic device according to claim 1, wherein: Light passing through the at least one lens is incident through a portion (401a) of the incident surface (401), and light reflected from the second reflection surface (403) is emitted through another portion (401b) of the incident surface (401).

6. The electronic device according to claim 5, wherein: The reflective and refractive member (400) further comprises a fourth surface (404) parallel to the incident surface (401), and wherein the first reflective surface (402) is not parallel to the second reflective surface (403).

7. The electronic device according to claim 5 or 6, wherein: The first cutting surface (405) is a first cross section cut along a third imaginary line (l3), the third imaginary line (l3) having a first predetermined angle in a counterclockwise direction (-) from a first point on a first imaginary line (l1) parallel to the optical axis, and The second cutting surface (406) is a second cross section cut along a second imaginary line (l2), and the second imaginary line (l2) has a second predetermined angle in a clockwise direction (+) from a second point on the first imaginary line (l1) parallel to the optical axis.

8. The electronic device according to any one of claims 1 to 7, wherein: The electronic device satisfies the following formula 1, [Formula 1] 5<|Ang_A1|<50 Wherein, Ang_A1 in Formula 1 is the angle between the optical axis and the first cutting surface.

9. The electronic device according to claim 8, wherein: The electronic device satisfies the following formula 2, [Formula 2] 5<|Ang_A2|<50 Wherein, Ang_A2 in Formula 2 is the angle between the optical axis and the second cutting surface.

10. The electronic device according to claim 9, wherein: The electronic device satisfies the following formula 3, [Formula 3] -10 <Ang_A1 / Ang_A2<-0.1 Wherein, Ang_A1 in Formula 3 is the angle between the optical axis and the first cutting surface, and Ang_A2 in Formula 3 is the angle between the optical axis and the second cutting surface.

11. The electronic device according to any one of claims 1 to 10, wherein: At least one of the first reflecting surface or the second reflecting surface is configured to satisfy a total reflection condition.

12. The electronic device according to any one of claims 1 to 11, wherein: The reflective and refractive member satisfies the following formula 4, [Formula 4] 25 <Vd_1<95 Wherein, Vd_1 in Formula 4 is the dispersion value of the reflective and refractive component.

13. The electronic device according to any one of claims 1 to 12, wherein: At least one of the first cutting surface or the second cutting surface has a roughness capable of relatively reducing reflectivity of light passing through the at least one of the first cutting surface and the second cutting surface, wherein at least one of the first cutting surface or the second cutting surface is subjected to coating treatment, or Wherein, at least one of the first cutting surface or the second cutting surface is painted black.

14. The electronic device according to any one of claims 1 to 13, wherein: The lens assembly including the lens group, the image sensor, and the reflective and refractive member satisfies the following formula 5, [Formula 5] 5 <FOV<35 Wherein, the FOV in Formula 5 is the field of view of the electronic device including the lens assembly.

15. The electronic device according to claim 14, wherein: The lens assembly forms a folded optical lens system configured to reflect or refract a path of light incident on the at least one lens at least twice, and Wherein, an image stabilization function is performed by moving or rotating the reflecting and refractive member.

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