WO2023146342A1 - Ensemble lentille et dispositif électronique le comprenant - Google Patents

Ensemble lentille et dispositif électronique le comprenant Download PDF

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Publication number
WO2023146342A1
WO2023146342A1 PCT/KR2023/001266 KR2023001266W WO2023146342A1 WO 2023146342 A1 WO2023146342 A1 WO 2023146342A1 KR 2023001266 W KR2023001266 W KR 2023001266W WO 2023146342 A1 WO2023146342 A1 WO 2023146342A1
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Prior art keywords
lens
refractive power
lens assembly
subject side
conditional expression
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PCT/KR2023/001266
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English (en)
Korean (ko)
Inventor
신정길
Original Assignee
삼성전자 주식회사
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Priority claimed from KR1020220058048A external-priority patent/KR20230115847A/ko
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Publication of WO2023146342A1 publication Critical patent/WO2023146342A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Definitions

  • Various embodiments of the present disclosure relate to a lens assembly and an electronic device including the lens assembly, which is mounted on a small-sized or portable electronic device, and an electronic device including the lens assembly.
  • An optical device for example, a camera capable of taking images or moving pictures has been widely used.
  • a film-type optical device was the main one, recently a digital camera or video camera having a solid-state image sensor such as a CCD (charge coupled device) or a CMOS (complementary metal-oxide semiconductor) video cameras are widespread.
  • An optical device employing a solid-state image sensor (CCD or CMOS) is gradually replacing the film-type optical device because it is easier to store, reproduce, and move images than a film-type optical device.
  • an optical device may include an optical system including a lens assembly including a plurality of lenses and an image sensor having a high pixel count.
  • the lens assembly may have, for example, a low F-number and low aberration, thereby obtaining high quality (high resolution) images and/or moving pictures.
  • f number F number
  • low aberration in other words, to obtain a bright and high resolution image, it is necessary to combine multiple lenses.
  • a plurality of very small pixels for example, pixels in micrometer units, may be disposed.
  • image sensors including tens of millions to hundreds of millions of pixels in units of micrometers are being mounted on portable electronic devices such as smart phones and tablets.
  • optical devices have become essential components of electronic devices that provide various services and additional functions, and high-performance optical devices may have an effect of attracting users to purchase electronic devices.
  • Portable electronic devices are being miniaturized and thinned for easy portability, and an optical system mounted on the portable electronic device is also required to have a compact lens structure with a short length.
  • a high-pixel image sensor should be installed.
  • having a high-pixel image sensor may mean an increase in the size of the image sensor and an increase in the length of the optical system. If the overall length of the optical system increases, it may be difficult to mount the camera module on the portable electronic device, or the degree of protrusion of the camera module from the exterior of the portable electronic device may increase.
  • the total length of the optical system is reduced, the angle of view of the optical system may be increased compared to the angle of view according to the initial specification. If the field of view of the optical system is increased in the process of reducing the total length of the optical system, a phenomenon in which images or videos in the periphery of the field of view may be distorted compared to the center of the field of view.
  • an optical system having a short length is provided, but a lens assembly and an electronic device without an increase in an angle of view are provided.
  • an electronic device including a lens assembly includes a lens assembly including a plurality of lenses sequentially arranged along an optical axis direction from a subject side to an image side; and an image sensor, and the lens assembly may provide an electronic device that satisfies the following [Conditional Expression 1] and [Conditional Expression 2].
  • 'LSA' in Conditional Equation 1 is the longitudinal spherical aberration
  • 'Fr' is the actual focal length of the optical system
  • 'TTL' in Conditional Equation 2 is from the subject side surface of the lens closest to the subject side among the lenses to the image plane.
  • 'ImgH' is the effective image height of the image sensor, which is half of the diagonal length of the image sensor.
  • the angle of view is not increased even if the entire length of the optical system is shortened, and thus, it is possible to secure excellent optical performance while being mountable to a portable electronic device. There is an advantage.
  • the present disclosure can be easily mounted on a miniaturized and/or lightweight electronic device such as a smart phone, and can contribute to expanding optical functions or improving optical performance of the electronic device.
  • FIG. 1 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to one of various embodiments.
  • 2A is a diagram showing the principle of longitudinal spherical aberration of a lens assembly.
  • FIG. 2B is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 1 .
  • FIG. 3 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 1 .
  • FIG. 4 is a graph showing distortion aberration of the lens assembly according to the exemplary embodiment of FIG. 1 .
  • FIG. 5 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another embodiment among various embodiments.
  • FIG. 6 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 5 .
  • FIG. 7 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 5 .
  • FIG. 8 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 5 .
  • FIG. 9 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 10 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 9 .
  • FIG. 11 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 9 .
  • FIG. 12 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 9 .
  • FIG. 13 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 14 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 13 .
  • 15 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 13 .
  • FIG. 16 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 13 .
  • 17 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 18 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 17 .
  • FIG. 19 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 17 .
  • FIG. 20 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 17 .
  • 21 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 22 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 21 .
  • FIG. 23 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 21 .
  • FIG. 24 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 21 .
  • 25 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 26 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 25 .
  • FIG. 27 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 25 .
  • FIG. 28 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 25 .
  • 29 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to another one of various embodiments.
  • FIG. 30 is a graph showing spherical aberration of the lens assembly according to the embodiment of FIG. 29 .
  • FIG. 31 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 29 .
  • FIG. 32 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 29 .
  • 33 is a block diagram of an electronic device (eg, an optical device) in a network environment, according to various embodiments.
  • 34 is a block diagram illustrating a camera module, in accordance with various embodiments.
  • “configured to (or configured to)” means “suitable for,” “having the ability to,” depending on circumstances, for example, hardware or software. "modified to,” “made to,” “capable of,” or “designed to” can be used interchangeably.
  • the expression “device configured to” can mean that the device is “capable of” in conjunction with other devices or components.
  • a processor configured (or configured) to perform A, B, and C may include a dedicated processor (eg, embedded processor) to perform the operation, or by executing one or more software programs stored in a memory device.
  • a general-purpose processor eg, CPU or application processor
  • Electronic devices include, for example, a smart phone, a tablet PC, a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a netbook computer, a workstation, a server, a PDA, and a PMP. It may include at least one of a portable multimedia player, an MP3 player, a medical device, a camera, or a wearable device.
  • a wearable device may be in the form of an accessory (e.g. watch, ring, bracelet, anklet, necklace, eyeglasses, contact lens, or head-mounted-device (HMD)), integrated into textiles or clothing (e.g.
  • the electronic device may include, for example, a television, a digital video disk (DVD) player, Audio, refrigerator, air conditioner, vacuum cleaner, oven, microwave, washing machine, air purifier, set top box, home automation control panel, security control panel, media box (e.g. Samsung HomeSync TM , Apple TV TM , or Google TV TM ) , a game console (eg, Xbox TM , PlayStation TM ), an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame.
  • DVD digital video disk
  • the electronic device may include various types of medical devices (e.g., various portable medical measuring devices (such as blood glucose meter, heart rate monitor, blood pressure monitor, or body temperature monitor), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), CT (computed tomography), imager, or ultrasonicator, etc.), navigation device, global navigation satellite system (GNSS), EDR (event data recorder), FDR (flight data recorder), automobile infotainment device, marine electronic equipment (e.g.
  • various portable medical measuring devices such as blood glucose meter, heart rate monitor, blood pressure monitor, or body temperature monitor
  • MRA magnetic resonance angiography
  • MRI magnetic resonance imaging
  • CT computed tomography
  • imager or ultrasonicator, etc.
  • navigation device e.g., global navigation satellite system (GNSS), EDR (event data recorder), FDR (flight data recorder), automobile infotainment device, marine electronic equipment (e.g.
  • the electronic device may be a piece of furniture, a building/structure or a vehicle, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (eg, water, electricity, gas, radio wave measuring device, etc.).
  • the electronic device may be flexible or a combination of two or more of the various devices described above.
  • Electronic devices according to various embodiments of the present disclosure are not limited to the aforementioned devices.
  • the term user may refer to a person using an electronic device or a device (eg, an artificial intelligence electronic device) using an electronic device.
  • An electronic device according to an embodiment of the present disclosure is not limited to the aforementioned devices.
  • FIG. 1 is a configuration diagram illustrating an optical system including a lens assembly and an image sensor according to one of various embodiments of the present disclosure.
  • a lens assembly 100 may include a plurality of lenses (eg, L1, L2, L3, L4, L5, L6, L7, and L8).
  • the image sensor IS may be mounted on an electronic device.
  • the lens assembly 100 including a plurality of lenses includes the optical device and/or the electronic device in which the image sensor IS is mounted. It can be mounted on to configure an optical system.
  • the optical device may be, for example, a camera, and the following description may assume that the lens assembly 100 is mounted on the optical device.
  • the optical device may be understood as a concept that further includes a housing that protects internal components and forms an external appearance together with the optical system.
  • the image sensor IS is a sensor mounted on a circuit board (not shown) and aligned with the optical axis O-I, and may respond to light.
  • the image sensor IS may include, for example, a sensor such as a complementary metal-oxide semiconductor (CMOS) or a charge coupled device (CCD).
  • CMOS complementary metal-oxide semiconductor
  • CCD charge coupled device
  • the image sensor IS is not limited thereto, and may include, for example, various elements that convert a subject image into an electrical image signal.
  • the image sensor IS detects contrast information, gradation information, color information, etc. of a subject from light passing through a plurality of lenses (eg, L1, L2, L3, L4, L5, L6, L7, L8), An image of the subject may be acquired.
  • At least one of a plurality of lenses (eg, L1, L2, L3, L4, L5, L6, L7, and L8) included in the lens assembly 100 is glass and/or Alternatively, it may include a lens formed of a synthetic resin (eg, plastic) material.
  • the image sensor IS has an approximately rectangular (eg, square) shape with the optical axis O-I as a normal line, but may be formed with a thin thickness.
  • the image sensor IS has a size of 6.00 mm or more in image height (ImagH) to acquire a high-pixel image or video, and can be formed to enable arrangement of hundreds of thousands to hundreds of millions of pixels. .
  • the image height ImagH is an effective image height of the image sensor IS and may mean half of the diagonal length of the image sensor.
  • the overall length of the optical system may increase.
  • the lens assembly 100 having a short overall image height contrast optical system of the image sensor IS can be provided.
  • the plurality of lenses for example, L1, L2, L3, L4, L5, L6, L7, and L8 constituting the lens assembly 100, one lens and another lens adjacent thereto As the interval between the lenses becomes narrower, the optical length of the lens assembly 100 (total length (TTL) of the lens assembly in the optical axis direction) may be reduced.
  • the optical length of the lens assembly 100 when trying to make an optical device and/or an electronic device including the lens assembly 100 according to various embodiments of the present disclosure small in size, keeping the length of the optical length of the lens assembly 100 as short as possible it is advantageous
  • the optical length when the optical length is shortened, the actual angle of view becomes larger than the designed angle of view, and a phenomenon in which images or videos in the periphery of the optical axis is distorted compared to the center of the optical axis may occur.
  • the lens assembly 100 in which the angle of view does not increase even if the length of the optical system is shortened.
  • Various embodiments of the present disclosure may implement a wide-angle lens having an angle of view of 85 degrees or less, for example, and provide a lens assembly 100 having a short overall length while maintaining a pre-designed angle of view of 85 degrees or less.
  • the lens assembly 100 is formed on an optical axis O-I passing through centers of a plurality of lenses from an object side (O) to an image side (I).
  • O object side
  • I image side
  • the object side may indicate a direction in which the object is located
  • the image side may indicate an image plane (img) on which an image is formed. direction can be indicated.
  • the "surface facing the subject side” of the lens for example, means the left surface (or front surface) of the lens in the drawing of the present disclosure as the surface on the side where the subject is located with respect to the optical axis O-I, "
  • the surface facing the image side is a surface on the side where the imaging surface img is located based on the optical axis O-I, and may represent the right surface (or rear surface) of the lens in the drawing.
  • the imaging plane (img) may be, for example, a portion where an imaging device or an image sensor IS is disposed to form an image.
  • looking at the subject side O along the optical axis O-I based on at least one lens among a plurality of lenses included in the lens assembly 100, is 'directed in the first direction'.
  • looking at the image side (I) along the optical axis (O-I) can be defined as 'facing the second direction'.
  • a lens eg, the first lens L1
  • the surface facing the subject side O faces the first direction.
  • the surface facing the image side I may be said to face the second direction.
  • the optical system including the image sensor IS is aligned along the optical axis'.
  • a side closer to the optical axis O-I in each lens is referred to as the 'central part ( chief portion', and a side farther from the optical axis O-I (or near the edge of the lens) may be referred to as a 'marginal portion'.
  • the chief portion may be, for example, a portion crossing the optical axis O-I in a certain lens (eg, the first lens L1).
  • the marginal portion may be, for example, a portion spaced apart from an optical axis in a lens (eg, the first lens L1) by a predetermined distance.
  • the marginal portion may include, for example, an end portion of the lens farthest from the optical axis O-I of the lens. Further, according to various embodiments of the present disclosure, light passing through the center or a portion close to the center may be referred to as a paraxial ray, and light passing through the peripheral portion may be referred to as a circular axis ray.
  • the radius of curvature, thickness, total length from image plane (TTL), and focal length of the lens of the present disclosure may all have units of mm unless otherwise specified.
  • the thickness of the lens, the distance between the lenses, and the TTL may be distances measured around the optical axis of the lens.
  • the convex shape of one side may mean that the optical axis portion of the corresponding side is convex
  • the concave shape of one side may mean that the optical axis portion of the corresponding side is concave.
  • an inflection point may mean a point at which the radius of curvature is changed in a portion that does not intersect the optical axis.
  • the lens assembly 100 includes at least six or more lenses, and thus may be advantageous in aberration correction including chromatic aberration.
  • the lens assembly 100 for example, sequentially in an optical axis (O-I) direction (eg, a direction from the subject O in FIG. 1 toward the image I).
  • O-I optical axis
  • a plurality of lenses for example, L1, L2, L3, L4, L5, L6, L7, L8 arranged, eight lenses may be included.
  • Other embodiments including eight lenses are disclosed through the embodiments of FIGS. 5, 9, and 13 hereinafter.
  • 17, 21, and 29 are a plurality of lenses sequentially arranged in the direction of the optical axis O-I (eg, a direction from the subject O to the image I in FIG. 1).
  • L1, L2, L3, L4, L5, L6, L7 and may include 7 lenses.
  • the embodiment of FIG. 25 below is a plurality of lenses (eg, L1, As L2, L3, L4, L5, and L6), six lenses may be included.
  • the first lens L1, the second lens L2, the third lens L3, and the fourth lens L4 are sequentially formed from the subject side O, respectively.
  • the plurality of lenses may be arranged in an optical axis O-I alignment with the image sensor IS.
  • the first lens L1 included in the lens assembly 100 may have positive refractive power
  • the second lens L2 may have negative refractive power.
  • a lens having positive refractive power may be a lens based on the principle of a convex lens.
  • the light passing through the lens may be dispersed.
  • a lens having negative refractive power may be a lens based on the principle of a concave lens.
  • the third lens L3 may have positive refractive power and the fourth lens L4 may have negative refractive power.
  • the seventh lens L7 may have positive refractive power, and the eighth lens L8 may have negative refractive power.
  • the fifth lens L5 and the sixth lens L6 disposed between the fourth lens L4 and the seventh lens L7 may have positive or negative refractive power, respectively.
  • a first lens L1 may have a positive refractive power and have a convex surface S2 facing the subject side O, thereby condensing light.
  • the second lens L2 has negative refractive power, but like the first lens L1, the surface S4 facing the subject side O may be convex.
  • the first lens L1 and the second lens L2 have surfaces S2 and S4 facing the subject side O and convex surfaces S3 and S5 facing the image side I.
  • the size of the optical device is reduced by configuring the first lens L1 and the second lens L2 as lenses having small effective diameters, but the seventh lens L7 and the eighth lens ( L8) may be composed of a lens having a large effective diameter corresponding to the image sensor US having a large size in order to provide high pixels.
  • the 'effective diameter' may mean a distance between one end and the other end of the lens in a direction perpendicular to the optical axis O-I.
  • the second lens L2 has a negative refractive power and is a pair structure to the first lens L1. It is arranged adjacently and can play a role of dispersing the condensed light.
  • the surface S4 of the second lens L2 facing the subject side O may have a shape corresponding to that of the surface S3 of the first lens L1 facing the image side I, and are disposed in close contact with each other. It can be.
  • the second lens (L2) and the seventh lens (L7) the third lens (L3), the fourth lens (L4), the fifth lens (L5), and the sixth lens (L6) whose effective diameters sequentially increase are provided. Aberrations can be effectively corrected by placing them.
  • the optical characteristics of the lens assembly can be explained through the concept of 'half effective diameter', which is half of the 'effective diameter'.
  • At least one of the plurality of lenses (eg, L1, L2, L3, L4, L5, L6, L7, and L8) included in the lens assembly 100 is made of a synthetic resin having a predetermined refractive index. (e.g., plastic) can be implemented as a lens.
  • a plurality of lenses made of a synthetic resin material the degree of freedom in designing the size or shape can be high.
  • a plurality of lenses eg, L1, L2, L3, L4, L5, L6, L7, and L8 may all be lenses made of synthetic resin.
  • At least one surface of at least one lens among a plurality of lenses (eg, L1, L2, L3, L4, L5, L6, L7, and L8) included in the lens assembly 100 is an aspheric surface.
  • the spherical aberration that can occur in at least one of the plurality of lenses (eg L1, L2, L3, L4, L5, L6, L7, L8) is L3, L4, L5, L6, L7, L8) can be prevented and/or reduced by forming at least one surface of at least one lens as an aspherical surface.
  • a plurality of lenses may all include an aspheric surface.
  • the lens assembly 100 may include at least one stop. By adjusting the size of the diaphragm, the amount of light reaching the imaging surface img of the image sensor IS can be controlled.
  • the position of the iris may be disposed between the second lens L2 and the third lens L3.
  • a stop for determining the Fno of the entire optical system is disposed between the second lens L2 and the third lens L3, and the front of the stop with respect to the optical axis.
  • Lenses located on eg, the first lens (L1) and the second lens (L2)
  • lenses located behind the stop eg, the third lens (L3), the fourth lens (L4)
  • the lens assembly 100 may further include a filter F disposed between the eighth lens L8 and the image sensor IS.
  • the filter F may block light detected by a film of an optical device or an image sensor, for example, infrared rays.
  • the filter F may include, for example, at least one of a low pass filter and a cover glass.
  • the filter F transmits visible light and emits infrared rays to the outside, thereby preventing infrared rays from being transferred to the imaging surface img of the image sensor.
  • a lens assembly consisting of at least six lenses (eg, a first lens L1, a second lens L2 as shown in FIG. 1, A total of 8 lenses including the 3rd lens (L3), the 4th lens (L4), the 5th lens (L5), the 6th lens (L6), the 7th lens (L7) and the 8th lens (L8) lens assembly), but the size of the optical device is miniaturized by forming the effective mirrors of the first lens L1 and the second lens L2 relatively small compared to other lenses from the subject side (O). can do.
  • Various embodiments of the present disclosure may provide a lens assembly 100 that keeps the total length (TTL) of the optical system short but does not increase the angle of view.
  • the lens assembly 100 can have high-performance optical characteristics by satisfying the following [Conditional Equation 1] and [Conditional Equation 2] so that the length of the optical system is kept short while the angle of view is maintained. .
  • 'LSA' in Conditional Equation 1 is the longitudinal spherical aberration
  • 'Fr' is the actual focal length of the optical system
  • 'TTL' in Conditional Equation 2 is from the subject side surface of the lens closest to the subject side among the lenses to the image plane.
  • the distance of 'ImgH' is the effective image height of the image sensor and may be half of the diagonal length of the image sensor.
  • the lens closest to the subject side is the first lens L1, which is the closest lens to the subject side O when the lens assembly 100 includes 8 lenses. ) can mean.
  • FIG. 2A is a diagram showing the principle of longitudinal spherical aberration of a lens assembly.
  • FIG. 2B is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 1 .
  • Spherical aberration may be a phenomenon in which a focusing position of light passing through different parts (eg, a chief portion and a marginal portion) of a lens is changed.
  • Longitudinal spherical aberration (LSA) may be defined as a value obtained by subtracting the focal length (Fp) of the paraxial ray from the actual focal length (Fr).
  • the actual focal length Fr and the focal length Fp of the paraxial ray can be formed.
  • the overall length of the optical system it is common that the actual focal length (Fr) is reduced and thus the angle of view is increased. It is possible to prevent the angle of view from increasing.
  • Conditional Expression 2 is an expression related to the total length of the optical system.
  • TTL/ImgH the value of the length of the optical system compared to the image image of Condition 2
  • TTL/ImgH total length value of the optical system compared to the image image
  • the lens assembly 100 as described above may additionally satisfy the following [Conditional Expression 3].
  • Conditional Expression 3 is the Abbe-number of the first lens (eg, the first lens (L1)) from the subject side, and 'vd2' is the second lens (eg, the second lens (eg, the second lens (eg) from the subject side)). It may be the Abbe number of L2)).
  • Conditional Expression 3 is, for example, an expression related to chromatic aberration when a plastic lens is used, and the Abbe number value (Vd1/Vd2) of the first lens L1 compared to the Abbe number of the second lens L2 exceeds the upper limit value.
  • the lens assembly 100 as described above may additionally satisfy the following [Conditional Expression 4].
  • 'CA1o' may be the half effective diameter of the subject side of the first lens (eg, the first lens L1) from the subject side, and 'Fr' may be the actual focal length of the optical system. If the semi-effective lens value (CA1o/Fr) of the first lens compared to the actual focal length of the optical system exceeds the upper limit, it is difficult to miniaturize the size of the optical device, and the semi-effective lens value (CA1o/Fr) of the first lens compared to the actual focal length of the optical system ) is less than the lower limit, it may be difficult to secure an appropriate amount of light.
  • the lens assembly 100 as described above may additionally satisfy the following [Conditional Expression 5].
  • 'CA1o' in Conditional Expression 5 is the half effective diameter of the subject side of the first lens (eg, the first lens L1) from the subject side
  • 'CA3o' is the third lens (eg, the first lens L1) from the subject side. 3 It may be a semi-effective mirror on the side of the subject of the lens L3.
  • the diaphragm (stop) may be located between the second lens (L2) and the third lens (L3), by using the diaphragm (stop), the periphery located far from the center of the lens It is possible to improve aberrations by blocking light rays.
  • a semi-effective mirror of the third lens may be made smaller than a semi-effective mirror of the first lens in order to block a part of light rays by providing a stop.
  • the value of the semi-effective mirror of the third lens L3 may be designed to be more than half of the semi-effective mirror of the first lens L1.
  • the lens assembly 100 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 having refractive power may be included.
  • the lens assembly 100 according to the embodiment shown in FIG. 1 includes a fifth lens L5 having negative refractive power, a sixth lens L6 having positive refractive power, and a seventh lens L7 having positive refractive power. , and an eighth lens L8 having negative refractive power.
  • L6, L7, L8 may refer to the surface of the subject side (O) and the image side (I).
  • 'S1' is not an actual lens surface, but a position considered in the design of the lens assembly 100, for example, a reference position of a structure where a protection window is disposed or a lens (L1, L2, L3, L4, L5, L6, A position of a structure (or a lens barrel or a lens housing) fixing one of L7 and L8 (eg, the first lens L1) may be exemplified.
  • S6 may be the same as the stop position.
  • 'S19' and 'S20' may refer to the subject-side (O) surface and the image-side (I) surface of the IR cut filter (F).
  • 'obj' may mean a subject. radius is the radius of curvature of the lens, thickness is the thickness or air gap of the lens, H-Ape is the semi-effective diameter of the lens, efl is the focal length of the lens, nd is the refractive index of the medium (eg lens), vd is It may mean an Abbe's number of a lens.
  • the lens assembly 100 included in the following [Table 1] may relate to a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 100 included in [Table 1] has an actual focal length (Fr) of 6.3 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.802 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • 'x' is the distance (sag) from the apex of the lens in the direction of the optical axis (O-I)
  • 'c' is the reciprocal of the basic radius of curvature (radius) of the lens
  • 'y' is the distance in the direction perpendicular to the optical axis.
  • 'K' is the Conic constant
  • 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', ' K', 'L', 'M', 'N', and 'O' may respectively mean aspherical surface coefficients.
  • the horizontal axis represents the degree of longitudinal spherical aberration
  • the vertical axis represents the normalized distance from the center of the optical axis, showing the change in longitudinal spherical aberration according to the wavelength of light. It can be.
  • a value close to 0 represents the longitudinal spherical aberration of the paraxial ray
  • a value each close to 1 may represent the longitudinal spherical aberration of the circular axial ray.
  • the longitudinal spherical aberration may be respectively expressed for light having a wavelength of about 656.3000 nm (nanometer), about 587.6000 nm, about 546.1000 nm, about 486.1000 nm, or about 435.8000 nm, respectively, for example.
  • FIG. 2B it can be seen that the longitudinal spherical aberration of the lens assembly 100 according to various embodiments of the present disclosure in the visible light band is limited within approximately +0.25 to -0.25, showing stable optical characteristics. And, in the case of the paraxial ray, it can be confirmed that the value of the longitudinal spherical aberration is significantly larger than that of the circular axial ray.
  • FIG. 3 is a graph showing astigmatism of the lens assembly 100 according to one of various embodiments of the present disclosure (eg, the embodiment of FIG. 1 ).
  • Astigmatism may be when the focal points of light passing through a vertical direction and a horizontal direction are shifted from each other when a tangential plane or meridian plane and a sagittal plane of a lens have different radii.
  • the astigmatism of the lens assembly 100 is a result obtained at a wavelength of approximately 546.1000 nm
  • the dotted line Y represents the astigmatism in the tangential direction (eg, meridian curvature)
  • the solid line ( X) may mean astigmatism (eg, spherical image plane curvature) in a sagittal direction.
  • astigmatism according to various embodiments of the present disclosure is limited within approximately +0.25 to -0.25, showing stable optical characteristics.
  • FIG. 4 is a graph showing distortion of the lens assembly 100 according to one of various embodiments of the present disclosure (eg, the embodiment of FIG. 1 ). Distortion aberration occurs because the optical magnification varies depending on the distance from the optical axis (O-I), and the image formed on the actual imaging plane (e.g. img in FIG. 1) looks larger or smaller than the image formed on the theoretical imaging plane. it could be
  • the distortion of the lens assembly 100 is a result obtained at a wavelength of approximately 546.1000 nm, and an image captured through the lens assembly 100 is a point deviating from the optical axis O-I (eg, a peripheral portion). ) may cause distortion.
  • this distortion is of a degree that can generally occur in an optical device using a lens, and the lens assembly 100 according to one of various embodiments of the present disclosure (eg, the embodiment of FIG. 1) has a distortion rate of about 2.5 %, good optical properties can be provided.
  • FIG. 5 is a configuration diagram illustrating a lens assembly 200 according to another one of various embodiments of the present disclosure.
  • FIG. 6 is a graph showing spherical aberration of the lens assembly 200 according to the embodiment of FIG. 5 .
  • FIG. 7 is a graph showing astigmatism of the lens assembly 200 according to the embodiment of FIG. 5 .
  • FIG. 8 is a graph showing distortion aberration of the lens assembly 200 according to the embodiment of FIG. 5 .
  • lens assembly 100 may be applied to the lens assemblies 200, 300, 400, 500, 600, 700, and 800 according to various other embodiments to be described below.
  • Some of the plurality of lens assemblies (100, 200, 300, 400, 500, 600, 700, 800) have the same lens properties (eg, angle of view, focal length, auto focus, f number, or optical zoom).
  • at least one lens assembly may have one or more lens properties different from those of the other lens assembly.
  • the plurality of lens assemblies 100, 200, 300, 400, 500, 600, 700, and 800 include a flash (3420 of FIG. 34 to be described later), an image sensor IS, an image stabilizer (134940 of FIG. 34 to be described later), memory (3450 of FIG. 34 to be described later) or an image signal processor (3460 of FIG. 34 to be described later) may be included to form an optical device (eg, a camera module).
  • a flash 3420 of FIG. 34 to be described later
  • an image sensor IS an image stabilizer
  • memory 3450 of FIG. 34 to be described later
  • an image signal processor 3460 of FIG. 34 to be described later
  • the lens assembly 200 according to one different from the embodiment of FIG. 1 includes a plurality of lenses (eg, L1, L2, L3, and L4). , L5, L6, L7, L8), an image sensor IS and/or a filter F.
  • the lens assembly 200 according to the embodiment shown in FIG. 5 includes a first lens L1 having positive refractive power, a second lens L2 having negative refractive power, and a third lens L3 having positive refractive power. , a fourth lens L4 having negative refractive power.
  • the lens assembly 200 includes a fifth lens L5 having positive refractive power, a sixth lens L6 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens having negative refractive power. (L8) may be included.
  • [Table 5] below may indicate various types of lens data of the lens assembly 200 according to the embodiment of FIG. 5 .
  • [Table 7] and [Table 8] may describe aspheric coefficients of the plurality of lenses L1, L2, L3, L4, L5, L6, L7, and L8, respectively.
  • the lens assembly 200 included in [Table 5] may relate to a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • ANG angle of view
  • the lens assembly 200 included in [Table 5] below has an actual focal length (Fr) of 6.3 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.910 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • the lens assembly 200 according to one of the various embodiments of the present disclosure (eg, the embodiment of FIG. 5) also has a longitudinal spherical aberration and an astigmatism of approximately +0.25 to -0.25 It is limited to within, and the distortion rate is less than about 2.5%, and it can be seen that it has good optical characteristics.
  • 9 is a configuration diagram illustrating a lens assembly 300 according to yet another one of various embodiments of the present disclosure. 10 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 9 .
  • 11 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 9 .
  • 12 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 9 .
  • a lens assembly 300 includes a plurality of It may include lenses L1, L2, L3, L4, L5, L6, L7, and L8, an image sensor IS, and/or a filter F.
  • the lens assembly 300 according to the embodiment shown in FIG. 9 includes a first lens L1 having positive refractive power, a second lens L2 having negative refractive power, and a third lens L3 having positive refractive power. , a fourth lens L4 having negative refractive power.
  • the lens assembly 200 includes a fifth lens L5 having negative refractive power, a sixth lens L6 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens having negative refractive power. (L8) may be included.
  • [Table 9] below may indicate various lens data of the lens assembly 300 according to the embodiment of FIG. 9 .
  • the following [Table 10], [Table 11], and [Table 12] may describe aspheric coefficients of the plurality of lenses L1, L2, L3, L4, L5, L6, L7, and L8, respectively.
  • the lens assembly 300 included in [Table 9] may relate to a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • ANG angle of view
  • the lens assembly 300 included in [Table 9] has an actual focal length (Fr) of 6.3 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.831 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • the lens assembly 300 according to one of the various embodiments of the present disclosure (eg, the embodiment of FIG. 5) also has a longitudinal spherical aberration and an astigmatism of approximately +0.25 to -0.25 It is limited to within, and the distortion rate is less than about 2.5%, and it can be confirmed that it has good optical characteristics.
  • 13 is a configuration diagram illustrating a lens assembly 400 according to yet another one of various embodiments of the present disclosure.
  • FIG. 14 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 13 .
  • 15 is a graph showing astigmatism of the lens assembly according to the embodiment of FIG. 13.
  • FIG. 16 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 13.
  • the lens assembly 400 includes a plurality of lenses L1, L2, L3, L4, L5, L7, and L8, an image sensor IS, and/or a filter. (F) may be included.
  • the lens assembly 400 according to the embodiment shown in FIG. 13 may include 7 lenses unlike the embodiments shown in FIGS. 1, 5, and 9 described above.
  • the lens assembly 400 includes the lens assemblies 100, 200, and 300 of FIGS. 1, 5, and 9 and a first lens L1 from the subject side O and a second lens L2 from the subject side O, respectively.
  • the lens assembly 400 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 may be included.
  • the lens assembly 200 may include a fifth lens L5 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens L8 having negative refractive power.
  • the following [Table 13] may represent various lens data of the lens assembly 400, and the following [Table 14], [Table 15], and [Table 16] show the plurality of lenses L1, L2, L3, L4, L5, L7, L8) of the aspherical surface coefficients may be respectively described.
  • the lens assembly 400 included in [Table 13] may relate to a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 400 included in Table 13 below has an actual focal length (Fr) of 6.3 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.913 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • the lens assembly 400 according to one of the various embodiments of the present disclosure (eg, the embodiment of FIG. 5) also has a longitudinal spherical aberration and astigmatism of approximately +0.25 to -0.25 It is limited to within, and the distortion rate is less than about 2.5%, and it can be confirmed that it has good optical characteristics.
  • 17 is a configuration diagram illustrating a lens assembly 500 according to yet another one of various embodiments of the present disclosure.
  • FIG. 18 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 17 .
  • FIG. 19 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 17 .
  • 20 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG.
  • a lens assembly 500 includes a plurality of It may include lenses L1, L2, L3, L4, L5, L7, and L8, an image sensor IS, and/or a filter F.
  • the lens assembly 500 according to the embodiment shown in FIG. 17 may include 7 lenses unlike the embodiments shown in FIGS. 1, 5, and 9 described above.
  • the lens assembly 500 includes the lens assemblies 100, 200, and 300 of FIGS. 1, 5, and 9 and a first lens L1 from the subject side O and a second lens L2 from the subject side O, respectively.
  • the lens assembly 500 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 may be included.
  • the lens assembly 500 may include a fifth lens L5 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens L8 having negative refractive power.
  • [Table 17] below may indicate various lens data of the lens assembly 500, and [Table 18], [Table 19], and [Table 20] below show the plurality of lenses L1, L2, and L3. , L4, L5, L7, and L8) aspheric coefficients may be respectively described.
  • the lens assembly 500 included in [Table 17] may be a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 500 included in Table 17 below has an actual focal length (Fr) of 6.3 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.895 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • FIG. 21 is a configuration diagram illustrating a lens assembly 600 according to another one of various embodiments of the present disclosure.
  • FIG. 22 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 21 .
  • 23 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 21 .
  • 24 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 21.
  • a lens assembly 600 includes a plurality of It may include lenses L1, L2, L3, L4, L7, and L8, an image sensor IS, and/or a filter F.
  • the lens assembly 600 according to the embodiment shown in FIG. 21 includes six lenses, unlike the embodiments shown in FIGS. 1, 5, and 9, and the embodiments shown in FIGS. 13 and 17. can do.
  • the lens assembly 600 includes the lens assemblies 100, 200, 300, 400, and 500 of FIGS. 1, 5, 9, 13, and 17 and a first lens L1 from the subject side O, respectively.
  • the second lens L2 from the subject side (O), the third lens L3 from the subject side (O), the fourth lens (L4) from the subject side (O), the first lens (L8) from the image side (I), and It may include a lens corresponding to the second lens L7 from the image side (I).
  • the lens assembly 600 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 may be included.
  • the lens assembly 200 may include a seventh lens L7 having positive refractive power and an eighth lens L8 having negative refractive power.
  • [Table 21] below may indicate various lens data of the lens assembly 600, and [Table 22], [Table 23], and [Table 24] below show the plurality of lenses L1, L2, and L3. , L4, L7, and L8) aspherical surface coefficients may be respectively described.
  • the lens assembly 500 included in [Table 21] may be a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 600 included in Table 21 below has an actual focal length (Fr) of 5.42 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 6.099 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • FIG. 25 is a configuration diagram illustrating a lens assembly 700 according to another one of various embodiments of the present disclosure.
  • FIG. 26 is a graph showing spherical aberration of the lens assembly according to the embodiment of FIG. 25 .
  • 27 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 25 .
  • 28 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 25.
  • a lens assembly 700 includes a plurality of It may include lenses L1, L2, L3, L4, L5, L7, and L8, an image sensor IS, and/or a filter F.
  • the lens assembly 700 according to the embodiment shown in FIG. 25 may include 7 lenses, unlike the embodiments shown in FIGS. 1, 5, and 9 described above.
  • the lens assembly 700 includes the lens assemblies 100, 200, and 300 of FIGS. 1, 5, and 9 and a first lens L1 from the subject side O and a second lens L2 from the subject side O, respectively.
  • the lens assembly 700 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 may be included.
  • the lens assembly 700 may include a fifth lens L5 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens L8 having negative refractive power.
  • [Table 25] below may indicate various lens data of the lens assembly 700, and [Table 26], [Table 27], and [Table 28] below show the plurality of lenses L1, L2, and L3. , L4, L5, L7, and L8) aspheric coefficients may be respectively described.
  • the lens assembly 700 included in [Table 25] may relate to a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 700 included in Table 25 below has an actual focal length (Fr) of 5.37 mm, an F-number (F-No) of approximately 1.89, a total length (TTL) of 5.858 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • the lens assembly 700 according to one of various embodiments of the present disclosure (eg, the embodiment of FIG. 5) also has longitudinal spherical aberration and astigmatism of approximately +0.25 to -0.25 It can be confirmed that the lens assembly 800 has good optical characteristics, as the lens assembly 800 is limited within the range, and the distortion rate is less than about 2.5%, indicating that it has good optical characteristics.
  • FIG. 30 is a graph showing spherical aberration of a lens assembly according to the embodiment of FIG. 29 .
  • 31 is a graph showing astigmatism of a lens assembly according to the embodiment of FIG. 29 .
  • 32 is a graph showing distortion aberration of the lens assembly according to the embodiment of FIG. 29.
  • a lens assembly 800 includes a plurality of It may include lenses L1, L2, L3, L4, L5, L7, and L8, an image sensor IS, and/or a filter F.
  • the lens assembly 800 according to the embodiment shown in FIG. 29 may include 7 lenses unlike the embodiments shown in FIGS. 1, 5, and 9 described above.
  • the lens assembly 800 includes the lens assemblies 100, 200, and 300 of FIGS. 1, 5, and 9 and a first lens L1 from the subject side O and a second lens L2 from the subject side O, respectively.
  • the lens assembly 800 includes a first lens L1 having a positive refractive power, a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, and a negative refractive power.
  • a fourth lens L4 may be included.
  • the lens assembly 700 may include a fifth lens L5 having negative refractive power, a seventh lens L7 having positive refractive power, and an eighth lens L8 having negative refractive power.
  • [Table 29] below may indicate various lens data of the lens assembly 800, and [Table 30], [Table 31], and [Table 32] below show the plurality of lenses L1, L2, and L3. , L4, L5, L7, and L8) aspheric coefficients may be respectively described.
  • the lens assembly 800 included in [Table 29] may be a wide-angle lens having an angle of view (ANG) of 85 degrees or less.
  • the lens assembly 800 included in Table 29 below has an actual focal length (Fr) of 6.46 mm, an F-number (F-No) of approximately 1.79, a total length (TTL) of 7.167 mm, and an image
  • Fr actual focal length
  • F-No F-number
  • TTL total length
  • ImgH image height
  • Max ImgH maximum image height
  • the lens assembly 800 according to one of various embodiments of the present disclosure (eg, the embodiment of FIG. 5) also has longitudinal spherical aberration and astigmatism of approximately +0.25 to -0.25
  • the lens assembly eg, 100, 200, 300, 400, 500, 600, 700, 800
  • the lens assemblies e.g., 100, 200, 300, 400, 500, 600, 700, 800
  • various types of data on lenses can be checked. These data meet the conditions described above. , For example, the results of [Conditional Expressions 1 to 5] may be satisfied.
  • Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 conditional expression 1 LSA/Fr -0.0347 -0.0299 -0.0437 -0.0264 -0.0384 -0.0193 -0.0426 -0.0219 conditional expression 2 Vd1/Vd2 2.907 2.907 2.907 2.907 2.907 2.907 2.907 2.907 4.242 conditional expression 3 TTL/ImgH 1.088 1.106 1.093 1.106 1.103 1.138 1.094 1.101 conditional expression 4 CA1o/Fr 0.269 0.269 0.269 0.271 0.271 0.268 0.272 0.282 conditional expression 5 CA1o/CA3o 1.235 1.213 1.239 1.244 1.242 1.281 1.254 1.24
  • 'Example 1' refers to the lens assembly 100 shown in FIG. 1
  • 'Example 2' refers to the lens assembly 200 shown in FIG. 9
  • 'Embodiment 4' uses the lens assembly 400 shown in FIG. 13
  • 'Embodiment 5' uses the lens assembly 500 shown in FIG. 6′ represents the lens assembly 600 shown in FIG. 21
  • “Embodiment 7” represents the lens assembly 700 shown in FIG. 25
  • “Embodiment 8” represents the lens assembly 800 shown in FIG. 29.
  • each can mean
  • the lens assemblies eg, 100, 200, 300, 400, 500, 600, 700, and 800
  • an electronic device eg, an optical device
  • An electronic device may further include an application processor (AP) in addition to the image sensor (IS), and drive, for example, an operating system or an application program through the application processor (AP).
  • AP application processor
  • the application processor (AP) may further include a graphic processing unit (GPU) and/or an image signal processor.
  • the application processor (AP) includes an image signal processor, the image (or video) obtained by the image sensor (IS) may be stored or output using the application processor (AP).
  • an electronic device 3301 eg, an optical device
  • a network environment 3300 an electronic device 3301 (eg, an optical device) communicates with an electronic device 3302 through a first network 3398 (eg, a short-distance wireless communication network), or It is possible to communicate with the electronic device 3304 or the server 3308 through the second network 3399 (eg, a long-distance wireless communication network).
  • the electronic device 3301 may communicate with the electronic device 3304 through the server 3308.
  • the electronic device 3301 includes a processor 3320, a memory 3330, an input device 3350, an audio output device 3355, a display device 3360, an audio module 3370, a sensor module ( 3376), interface 3377, haptic module 3379, camera module 3380, power management module 3388, battery 3389, communication module 3390, subscriber identification module 3396, or antenna module 3397 ) may be included.
  • at least one of these components eg, the display device 3360 or the camera module 3380
  • the sensor module 3376 eg, a fingerprint sensor, an iris sensor, or an illumination sensor
  • the display device 3360 eg, a display.
  • the processor 3320 for example, executes software (eg, the program 3340) to cause at least one other component (eg, hardware or software component) of the electronic device 3301 connected to the processor 3320. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, the processor 3320 transfers instructions or data received from other components (e.g., sensor module 3376 or communication module 3390) to volatile memory 3332. , process commands or data stored in the volatile memory 3332, and store resultant data in the non-volatile memory 3334.
  • software eg, the program 3340
  • the processor 3320 transfers instructions or data received from other components (e.g., sensor module 3376 or communication module 3390) to volatile memory 3332. , process commands or data stored in the volatile memory 3332, and store resultant data in the non-volatile memory 3334.
  • the processor 3320 includes a main processor 3321 (eg, a central processing unit or an application processor), and a secondary processor 3323 (eg, a graphics processing unit, an image signal processor) that can operate independently of or in conjunction therewith. , sensor hub processor, or communication processor). Additionally or alternatively, the auxiliary processor 3323 may use less power than the main processor 3321 or may be configured to be specialized for a designated function. The auxiliary processor 3323 may be implemented separately from or as part of the main processor 3321 .
  • a main processor 3321 eg, a central processing unit or an application processor
  • a secondary processor 3323 eg, a graphics processing unit, an image signal processor
  • the auxiliary processor 3323 may use less power than the main processor 3321 or may be configured to be specialized for a designated function.
  • the auxiliary processor 3323 may be implemented separately from or as part of the main processor 3321 .
  • the auxiliary processor 3323 may, for example, take the place of the main processor 3321 while the main processor 3321 is in an inactive (eg, sleep) state, or when the main processor 3321 is active (eg, running an application). ) state, together with the main processor 3321, at least one of the components of the electronic device 3301 (eg, the display device 3360, the sensor module 3376, or the communication module 3390) It is possible to control at least some of the related functions or states.
  • the auxiliary processor 3323 eg, image signal processor or communication processor
  • the memory 3330 may store various data used by at least one component (eg, the processor 3320 or the sensor module 3376) of the electronic device 3301 .
  • the data may include, for example, input data or output data for software (eg, the program 3340) and commands related thereto.
  • the memory 3330 may include a volatile memory 3332 or a non-volatile memory 3334.
  • the program 3340 may be stored as software in the memory 3330, and may include, for example, an operating system 3342, middleware 3344, or an application 3346.
  • the input device 3350 may receive a command or data to be used by a component (eg, the processor 3320) of the electronic device 3301 from the outside of the electronic device 3301 (eg, a user).
  • the input device 3350 may include, for example, a microphone, mouse, keyboard, or digital pen (eg, a stylus pen).
  • the sound output device 3355 may output sound signals to the outside of the electronic device 3301 .
  • the audio output device 3355 may include, for example, a speaker or receiver.
  • the speaker can be used for general purposes, such as multimedia playback or recording playback, and the receiver can be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.
  • the display device 3360 can visually provide information to the outside of the electronic device 3301 (eg, a user).
  • the display device 3360 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
  • the display device 3360 may include a touch circuitry set to detect a touch or a sensor circuit (eg, a pressure sensor) set to measure the intensity of force generated by the touch. there is.
  • the audio module 3370 may convert sound into an electrical signal or vice versa. According to an embodiment, the audio module 3370 acquires sound through the input device 3350, the audio output device 3355, or an external electronic device connected directly or wirelessly to the electronic device 3301 (eg, Sound may be output through the electronic device 3302 (eg, a speaker or a headphone).
  • the audio module 3370 acquires sound through the input device 3350, the audio output device 3355, or an external electronic device connected directly or wirelessly to the electronic device 3301 (eg, Sound may be output through the electronic device 3302 (eg, a speaker or a headphone).
  • the sensor module 3376 detects an operating state (eg, power or temperature) of the electronic device 3301 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do.
  • the sensor module 3376 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.
  • the interface 3377 may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device 3301 to an external electronic device (eg, the electronic device 3302).
  • the interface 3377 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card
  • connection terminal 3378 may include a connector through which the electronic device 3301 may be physically connected to an external electronic device (eg, the electronic device 3302).
  • the connection terminal 3378 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 3379 may convert electrical signals into mechanical stimuli (eg, vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic senses.
  • the haptic module 3379 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 3380 may capture still images and moving images. According to one embodiment, the camera module 3380 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 3388 may manage power supplied to the electronic device 3301 .
  • the power management module 3388 may be implemented as at least part of a power management integrated circuit (PMIC), for example.
  • PMIC power management integrated circuit
  • the battery 3389 may supply power to at least one component of the electronic device 3301 .
  • the battery 3389 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.
  • the communication module 3390 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 3301 and an external electronic device (eg, the electronic device 3302, the electronic device 3304, or the server 3308). Establishment and communication through the established communication channel may be supported.
  • the communication module 3390 may include one or more communication processors that operate independently of the processor 3320 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 3390 may be a wireless communication module 3392 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 3394 (eg, a cellular communication module).
  • GNSS global navigation satellite system
  • the corresponding communication module is a first network 3398 (eg, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 3399 (eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunications network such as a LAN or WAN).
  • a first network 3398 eg, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)
  • a second network 3399 eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunications network such as a LAN or WAN).
  • a computer network eg, a telecommunications network such as a LAN or WAN.
  • These various types of communication modules may be integrated into one component (eg, a single chip) or implemented as a plurality of separate components (e
  • the wireless communication module 3392 uses the subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 3396 within a communication network such as the first network 3398 or the second network 3399.
  • the electronic device 3301 may be identified and authenticated.
  • the antenna module 3397 may transmit or receive signals or power to the outside (eg, an external electronic device).
  • the antenna module may include one antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, PCB).
  • the antenna module 3397 may include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 3398 or the second network 3399 is selected from the plurality of antennas by, for example, the communication module 3390. can be chosen A signal or power may be transmitted or received between the communication module 3390 and an external electronic device through the selected at least one antenna.
  • other components eg, RFIC
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • signal e.g. commands or data
  • commands or data may be transmitted or received between the electronic device 3301 and the external electronic device 3304 through the server 3308 connected to the second network 3399.
  • Each of the electronic devices 3302 and 3304 may be the same as or different from the electronic device 3301 .
  • all or part of operations executed in the electronic device 3301 may be executed in one or more external devices among the external electronic devices 3302 , 3304 , or 3308 .
  • the electronic device 3301 when the electronic device 3301 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 3301 instead of executing the function or service by itself.
  • one or more external electronic devices may be requested to perform the function or at least part of the service.
  • One or more external electronic devices receiving the request may execute at least a part of the requested function or service or an additional function or service related to the request, and deliver the execution result to the electronic device 3301 .
  • the electronic device 3301 may provide the result as it is or additionally processed and provided as at least part of a response to the request.
  • cloud computing distributed computing, or client-server computing technology. this can be used
  • the camera module 3480 includes a lens assembly 3410 (eg, 100 in FIG. 1 , 200 in FIG. 5 , 300 in FIG. 9 , 400 in FIG. 13 , 500 in FIG. 17 , 600 in FIG. 21 , 700 in FIG. 25, 800 in FIG. 29), flash 3420, image sensor 3430) (eg IS in FIG. 1), image stabilizer 3440, memory 3450 (eg buffer memory) (eg: 3330 of FIG. 33) or an image signal processor 3460.
  • the lens assembly 3410 may collect light emitted from a subject that is an image capture target.
  • Lens assembly 3410 may include one or more lenses.
  • the camera module 3480 may include a plurality of lens assemblies 3410 .
  • the camera module 3480 may form a dual camera, a 360 degree camera, or a spherical camera, for example.
  • Some of the plurality of lens assemblies 3410 may have the same lens properties (eg, angle of view, focal length, auto focus, f number, or optical zoom), or at least one lens assembly may have the same lens properties as another lens assembly. may have one or more lens properties different from the lens properties of .
  • the lens assembly 3410 may include, for example, a wide-angle lens or a telephoto lens.
  • the flash 3420 may emit light used to enhance light emitted or reflected from a subject.
  • the flash 3420 may include one or more light emitting diodes (eg, a red-green-blue (RGB) LED, a white LED, an infrared LED, or an ultraviolet LED), or a xenon lamp.
  • the image sensor 3430 may obtain an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through the lens assembly 3410 into an electrical signal.
  • the image sensor 3430 is, for example, an image sensor selected from image sensors having different properties, such as an RGB sensor, a black and white (BW) sensor, an IR sensor, or a UV sensor, It may include a plurality of image sensors having a property, or a plurality of image sensors having other properties.
  • Each image sensor included in the image sensor 3430 may be implemented using, for example, a charged coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.
  • CCD charged coupled device
  • CMOS complementary metal oxide semiconductor
  • the image stabilizer 3440 moves at least one lens or image sensor 3430 included in the lens assembly 3410 in a specific direction in response to movement of the camera module 3480 or the electronic device 3301 including the same. Operating characteristics of the image sensor 3430 may be controlled (eg, read-out timing is adjusted, etc.). This makes it possible to compensate at least part of the negative effect of the movement on the image being taken.
  • the image stabilizer 3440 may include a gyro sensor (not shown) or an acceleration sensor (not shown) disposed inside or outside the camera module 3480. Such a movement of the camera module 3480 or the electronic device 3301 may be detected using .
  • the image stabilizer 3440 may be implemented as, for example, an optical image stabilizer.
  • the memory 3450 may at least temporarily store at least a part of an image acquired through the image sensor 3430 for a next image processing task. For example, when image acquisition is delayed according to the shutter, or a plurality of images are acquired at high speed, the acquired original image (eg, a Bayer-patterned image or a high-resolution image) is stored in the memory 3450 and , a copy image (eg, a low resolution image) corresponding thereto may be previewed through the display device 3360 . Thereafter, when a specified condition is satisfied (eg, a user input or a system command), at least a part of the original image stored in the memory 3450 may be acquired and processed by the image signal processor 3460, for example.
  • the memory 3450 may be configured as at least a part of the memory 3430 or as a separate memory operated independently of the memory 3430 .
  • the image signal processor 3460 may perform one or more image processes on an image acquired through the image sensor 3430 or an image stored in the memory 3450 .
  • the one or more image processes for example, depth map generation, 3D modeling, panorama generation, feature point extraction, image synthesis, or image compensation (eg, noise reduction, resolution adjustment, brightness adjustment, blurring ( blurring, sharpening, or softening.
  • the image signal processor 3460 may include at least one of the components included in the camera module 3480 (eg, an image sensor). 3430) may be controlled (eg, exposure time control, read-out timing control, etc.)
  • the image processed by the image signal processor 3460 is stored again in the memory 3450 for further processing.
  • the image signal processor 3460 may be configured as at least a part of the processor 3320 or may be configured as a separate processor that operates independently of the processor 3320.
  • the image signal processor 3460 may be configured as a processor 3320 When configured as a separate processor, at least one image processed by the image signal processor 3460 may be displayed through the display device 3460 as it is by the processor 3420 or after additional image processing.
  • the electronic device 3301 may include a plurality of camera modules 3480 each having different properties or functions.
  • at least one of the plurality of camera modules 3480 may be a wide-angle camera and at least one other may be a telephoto camera.
  • at least one of the plurality of camera modules 3480 may be a front camera and at least the other may be a rear camera.
  • module used in this disclosure may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logical block, component, or circuit.
  • a module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present disclosure provide one or more instructions stored in a storage medium (eg, internal memory 3336 or external memory 3338) readable by a machine (eg, electronic device 3301). It may be implemented as software (eg, the program 3340) including them.
  • a processor eg, the processor 3320 of a device (eg, the electronic device 3301) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked.
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • Device-readable storage media may be provided in the form of non-transitory storage media.
  • 'non-temporary' only means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.
  • signals e.g., electromagnetic waves
  • the method according to various embodiments of the present disclosure may be included and provided in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • a computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store TM ) or between two user devices ( It can be distributed (eg downloaded or uploaded) online, directly between smartphones.
  • a device e.g. compact disc read only memory (CD-ROM)
  • an application store e.g. Play Store TM
  • It can be distributed (eg downloaded or uploaded) online, directly between smartphones.
  • at least part of the computer program product may be temporarily stored or temporarily created in a storage medium readable by a device such as a manufacturer's server, an application store server, or a relay server's memory.
  • each component eg, module or program of the components described above may include a singular entity or a plurality of entities.
  • one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg modules or programs
  • the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. .
  • the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.
  • the lens assembly eg, the lens assembly 100, 200, 300, 400, 500, 600, 700, 800
  • the electronic device 3301 of FIG. 33 for example, the electronic device 3301 of FIG. 33
  • a lens assembly comprising a lens
  • an image sensor eg, the image sensor (IS) of FIGS. 1, 5, 9, 13, 17, 21, 25, and 29
  • the lens assembly the following [conditional expression 1] and [Conditional Expression 2].
  • 'LSA' in Conditional Expression 1 is the longitudinal spherical aberration
  • 'Fr' is the actual focal length of the optical system
  • 'TTL' in Conditional Expression 2 is the lens closest to the subject side among the lenses (e.g., FIG. 1, FIG. 5, the distance from the subject side of the first lens (L1) of FIGS. 9, 13, 17, 21, 25, and 29 to the imaging surface (img) of the image sensor
  • 'ImgH' is the image sensor is the effective image height of half of the diagonal length of the image sensor.
  • the electronic device may satisfy the following [Conditional Expression 3].
  • 'Vd1' in Conditional Expression 3 is the first lens from the subject side (e.g., the first lens L1 in FIGS. 1, 5, 9, 13, 17, 21, 25, and 29)
  • the Abbe-number of 'vd2' is the second lens from the subject side (e.g., the second lens (L2 of FIGS. 1, 5, 9, 13, 17, 21, 25, 29) ))
  • the electronic device may satisfy the following [Conditional Expression 4].
  • 'CA1o' in Conditional Expression 4 is the first lens from the subject side (e.g., the first lens L1 in FIGS. 1, 5, 9, 13, 17, 21, 25, and 29) is the half effective diameter of the side of the subject, 'Fr' is the actual focal length of the optical system)
  • the electronic device may satisfy the following [Conditional Expression 5].
  • 'CA1o' in Conditional Expression 5 is the first lens from the subject side (e.g., the first lens L1 in FIGS. 1, 5, 9, 13, 17, 21, 25, and 29)
  • 'CA3o' is the half effective diameter of the side of the subject
  • 'CA3o' is the third lens from the subject side (e.g., the third lens in FIGS. 1, 5, 9, 13, 17, 21, 25, Semi-effective mirror on the subject side of the lens (L3))
  • the lens assembly sequentially from the subject side a first lens (eg, the first lens L1 of FIG. 21 ) and a second lens (eg, the lens assembly 600 of FIG. 21 ).
  • a first lens eg, the first lens L1 of FIG. 21
  • a second lens eg, the lens assembly 600 of FIG. 21
  • 3rd lens eg: 3rd lens (L3) of FIG. 21
  • 4th lens eg: 4th lens (L4) of FIG. 21
  • 5th lens Example: A fifth lens L7 of FIG. 21
  • a sixth lens eg, sixth lens L8 of FIG. 21
  • the first lens has positive refractive power
  • the second lens has negative refractive power
  • the third lens has positive refractive power
  • the fourth lens has negative refractive power
  • the fifth lens may have positive refractive power
  • the sixth lens may have negative refractive power.
  • the lens assemblies sequentially from the subject side first lenses (eg, the FIGS. 13, 17, 25, 29, the first lens L1), the second lens (eg, the second lens L2 of FIGS. 13, 17, 25, and 29), the third lens (eg, 13, 17, 25, 29 3rd lens (L3)), 4th lens (eg 13, 17, 25, 29 4th lens (L4)), 5th lens (eg, the fifth lens L5 of FIGS. 13, 17, 25, and 29), the sixth lens (eg, the sixth lens L7 of FIGS. 13, 17, 25, and 29) and Seven lenses (eg, the seventh lens L8 of FIGS. 13, 17, 25, and 29) may be included.
  • first lenses eg, the FIGS. 13, 17, 25, 29, the first lens L1
  • the second lens eg, the second lens L2 of FIGS. 13, 17, 25, and 29
  • the third lens eg, 13, 17, 25, 29 3rd lens (L3)
  • 4th lens eg 13, 17, 25, 29 4th lens (L4)
  • 5th lens eg, the fifth lens L5 of
  • the first lens has positive refractive power
  • the second lens has negative refractive power
  • the third lens has positive refractive power
  • the fourth lens has negative refractive power
  • the fifth lens may have negative refractive power
  • the sixth lens may have positive refractive power
  • the seventh lens may have negative refractive power.
  • the lens assemblies sequentially from the subject side first lenses (eg, FIGS. 1, 5, and 9).
  • the first lens has positive refractive power
  • the second lens has negative refractive power
  • the third lens has positive refractive power
  • the fourth lens has negative refractive power
  • the fifth lens may have positive or negative refractive power
  • the sixth lens may have negative or positive refractive power
  • the seventh lens may have positive refractive power
  • the eighth lens may have negative refractive power.
  • the actual focal length Fr may be greater than or equal to 5 mm and less than or equal to 7 mm.
  • At least one lens included in the lens assembly may be a plastic lens.
  • At least one lens included in the lens assembly may include an aspheric surface.
  • the first lens and the second lens from the subject side included in the lens assembly may be meniscus lenses that are convex toward the subject.
  • an aperture may be disposed between a second lens from the subject side and a third lens from the subject side.
  • the lens assembly eg, the lens assembly 100, 200, 300, 400, 500, 600, 700, 800
  • positive reflective power sequentially arranged along the optical axis direction from the subject side to the image side
  • a first lens eg, the first lens L1 of FIGS. 1, 5, 9, 13, 17, 21, 25, and 29
  • a second lens with negative reflective power Example: the second lens (L2) of FIGS. 1, 5, 9, 13, 17, 21, 25, and 29
  • a third lens having positive refractive power Example: FIGS. 1, 5, and 29
  • the fourth lens having negative refractive power e.g., FIG. 1, FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, 25, and 29, the fourth lens L4
  • a lens positioned second from the image side and having a positive refractive power e.g, the seventh lens L7 of FIGS. 1, 5, and 9, FIG. 13 17, 25, 29, the 6th lens L7 and the 5th lens L7 of FIG. 25, and a lens positioned first from the image side and having negative refractive power (e.g., FIGS. 1, 5, and 5)
  • a lens assembly including the eighth lens L8 of 9, the seventh lens L8 of FIGS. 13, 17, 25, and 29, and the sixth lens L8 of FIG. 25; and an image sensor, and the lens assembly may provide an electronic device that satisfies the following [Conditional Expression 1] and [Conditional Expression 2].
  • 'LSA' in Condition 1 is the longitudinal spherical aberration
  • 'Fr' is the actual focal length of the optical system
  • 'TTL' in Condition 2 is the image plane from the subject side surface of the lens closest to the subject side among the lenses.
  • the distance to the image sensor, 'ImgH' is the effective image height of the image sensor, which is half the diagonal length of the image sensor.
  • the lens assembly may include at least one lens (e.g., the fourth lens of FIGS. 1, 5, and 9) between the fourth lens having negative refractive power and a lens positioned second from the image side and having positive refractive power.
  • a fifth lens L5, a sixth lens L6, and a fifth lens L5 of FIGS. 13, 17, 25, and 29) may be further included.
  • the electronic device may satisfy the following [Conditional Expression 3].
  • 'Vd1' is the Abbe-number of the first lens from the subject side
  • 'vd2' is the Abbe-number of the second lens from the subject side
  • the electronic device may satisfy the following [Conditional Expression 4].
  • 'CA1o' is the half effective diameter of the subject side of the first lens from the subject side
  • 'Fr' is the actual focal length of the optical system
  • the electronic device may satisfy the following [Conditional Expression 5].
  • 'CA1o' is the half effective diameter of the subject side of the first lens from the subject side
  • 'CA3o' is the half effective diameter of the subject side of the third lens from the subject side

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lenses (AREA)

Abstract

Selon divers modes de réalisation de la présente divulgation, un dispositif électronique comprenant un ensemble lentille peut être fourni, le dispositif électronique comprenant : un ensemble lentille comprenant une pluralité de lentilles agencées séquentiellement du côté objet vers le côté image le long de l'axe optique ; et un capteur d'image. Le dispositif électronique peut mettre en œuvre une lentille compacte qui a une courte longueur totale mais n'augmente pas l'angle de vision. L'ensemble lentille tel que décrit ci-dessus peut varier selon des modes de réalisation. De plus, des ensembles lentilles et des dispositifs électroniques les comprenant, selon d'autres modes de réalisation variés, peuvent être fournis.
PCT/KR2023/001266 2022-01-27 2023-01-27 Ensemble lentille et dispositif électronique le comprenant WO2023146342A1 (fr)

Applications Claiming Priority (4)

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KR20220012007 2022-01-27
KR10-2022-0012007 2022-01-27
KR1020220058048A KR20230115847A (ko) 2022-01-27 2022-05-11 렌즈 어셈블리 및 그를 포함하는 전자 장치
KR10-2022-0058048 2022-05-11

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020062779A (ko) * 2001-01-24 2002-07-31 아사히 고가쿠 고교 가부시키가이샤 줌 렌즈 시스템
KR20060044602A (ko) * 2004-03-30 2006-05-16 후지논 가부시키가이샤 광각 단초점 렌즈
US20080055737A1 (en) * 2006-08-31 2008-03-06 Asia Optical Co., Inc Objective lens system
KR20160112307A (ko) * 2015-03-18 2016-09-28 삼성전자주식회사 촬영 렌즈 및 이를 포함하는 촬영 장치
KR101671451B1 (ko) * 2016-03-09 2016-11-01 주식회사 에이스솔루텍 촬영 렌즈 광학계

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020062779A (ko) * 2001-01-24 2002-07-31 아사히 고가쿠 고교 가부시키가이샤 줌 렌즈 시스템
KR20060044602A (ko) * 2004-03-30 2006-05-16 후지논 가부시키가이샤 광각 단초점 렌즈
US20080055737A1 (en) * 2006-08-31 2008-03-06 Asia Optical Co., Inc Objective lens system
KR20160112307A (ko) * 2015-03-18 2016-09-28 삼성전자주식회사 촬영 렌즈 및 이를 포함하는 촬영 장치
KR101671451B1 (ko) * 2016-03-09 2016-11-01 주식회사 에이스솔루텍 촬영 렌즈 광학계

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