Patent ID: 12228791

Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent to one of ordinary skill in the art. The sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed as will be apparent to one of ordinary skill in the art, with the exception of operations necessarily occurring in a certain order. Also, descriptions of functions and constructions that would be well known to one of ordinary skill in the art may be omitted for increased clarity and conciseness.

The features described herein may be embodied in different forms, and are not to be construed as being limited to the examples described herein. Rather, the examples described herein have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to one of ordinary skill in the art.

Herein, it is noted that use of the term “may” with respect to an example or embodiment, e.g., as to what an example or embodiment may include or implement, means that at least one example or embodiment exists in which such a feature is included or implemented while all examples and embodiments are not limited thereto.

Throughout the specification, when an element, such as a layer, region, or substrate, is described as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element, or there may be one or more other elements intervening therebetween. In contrast, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, there can be no other elements intervening therebetween.

As used herein, the term “and/or” includes any one and any combination of any two or more of the associated listed items.

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

Spatially relative terms such as “above,” “upper,” “below,” and “lower” may be used herein for ease of description to describe one element's relationship to another element as shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being “above” or “upper” relative to another element will then be “below” or “lower” relative to the other element. Thus, the term “above” encompasses both the above and below orientations depending on the spatial orientation of the device. The device may also be oriented in other ways (for example, rotated 90 degrees or at other orientations), and the spatially relative terms used herein are to be interpreted accordingly.

The terminology used herein is for describing various examples only, and is not to be used to limit the disclosure. The articles “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “includes,” and “has” specify the presence of stated features, numbers, operations, members, elements, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, members, elements, and/or combinations thereof.

Due to manufacturing techniques and/or tolerances, variations of the shapes shown in the drawings may occur. Thus, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways as will be apparent after an understanding of the disclosure of this application. Further, although the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the disclosure of this application.

Hereinafter, examples will be described as follows with reference to the attached drawings.

Herein, a first lens refers to a lens closest to an object (or a subject), and a fifth lens refers to a lens closest to an imaging surface (or an image sensor). Herein, a unit of a curvature of radius, a thickness, TTL, 2ImgHT (a diagonal length of the imaging surface), and a focal length of the lens may be in millimeters (mm). In addition, the thickness of the lens, an interval between the lenses, and the TTL is a distance from an optical axis of the lens. In addition, in an explanation of a shape of each lens, a convex shape on one surface may mean an optical axis portion of the surface is convex, and a concave shape of one surface may mean an optical axis portion of the surface is concave. Therefore, even when one surface of the lens is described as having a convex shape, an edge portion of the lens may be concave. Similarly, even when one surface of the lens is described as having a concave shape, an edge portion of the lens may be convex.

The lens imaging system includes an optical system comprised of a plurality of lenses. For example, the optical system of the lens imaging system is comprised of a plurality of lenses having refractive power. However, the lens imaging system is not comprised of only lenses having refractive power. For example, the lens imaging system may include a stop ST for adjusting an amount of light. In addition, the lens imaging system may include an infrared cut filter for blocking infrared rays. In addition, the lens imaging system may further include an image sensor (i.e., an imaging device) for converting an image of a subject incident through the optical system into an electrical signal. In addition, the lens imaging system may further include a gap maintenance member for adjusting the distance between the lens and the lens.

A plurality of lenses is made of materials having different refractive indexes from air. For example, the plurality of lenses is made of plastic or glass materials. At least one of the plurality of lenses has an aspherical shape. The aspherical surface of the lens is represented by Equation 1 below.

Z=cr21+1-(1+k)⁢c2⁢r2+Ar4+Br6+Cr8+Dr10+Er12+Fr14+Gr16+Hr18+Jr20Equation⁢1

In Equation 1, c is a reciprocal of a radius of curvature of the lens, k is a conical constant, r is a distance from any point on an aspherical surface to an optical axis, A through J are aspherical surface constants, and Z (or SAG) is a height in an optical axis direction from any point on an aspheric surface to an apex of the aspheric surface.

The lens imaging system includes five or more lenses. For example, the lens imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from an object side.

The first lens to the fifth lens may be disposed at intervals from neighboring lenses. For example, an image side surface of the first lens may not contact an object side surface of the second lens, and an image side surface of the second lens may not contact an object side surface of the third lens.

The first lens has predetermined refractive power. For example, the first lens may have positive refractive power. The first lens has a convex shape on one surface. For example, the first lens may have a convex shape on an image side surface. The first lens has a predetermined refractive index. For example, the first lens may have a refractive index of 1.6 or more. The first lens has a predetermined focal length. For example, the focal length of the first lens may be in a range of 7.0 to 9.0 mm.

The second lens has predetermined refractive power. For example, the second lens may have negative refractive power. The second lens has a concave shape on one surface. For example, the second lens may have a concave shape on an image side surface. The second lens has a predetermined refractive index. For example, the second lens may have a refractive index of 1.0 or more and less than 1.6. The second lens has a predetermined focal length. For example, the focal length of the second lens may be in a range of −10 to −7.0 mm.

The third lens has predetermined refractive power. For example, the third lens has a concave shape on one surface. For example, the third lens may have a concave shape on an image side surface. The third lens has a predetermined refractive index. For example, the third lens may have a refractive index of 1.6 or more and less than 1.8. The third lens has a predetermined focal length. The focal length of the third lens may be in a range of 30 to 100 mm.

The fourth lens has predetermined refractive power. For example, the fourth lens may have negative refractive power. The fourth lens has a convex shape on one surface. For example, the fourth lens may have a convex shape on an image side surface. The fourth lens has a predetermined refractive index. For example, the fourth lens may have a refractive index of 1.6 or more and less than 1.8. The fourth lens has a predetermined focal length. For example, the focal length of the fourth lens may be in a range of −30 to −15 mm.

The fifth lens has predetermined refractive power. For example, the fifth lens may have positive or negative refractive power. The fifth lens may have a concave shape on one surface. For example, the fifth lens may have a concave shape on an image side surface. The fifth lens has predetermined refractive power. For example, the fifth lens may have refractive power of 1.5 or more and less than 1.8. The fifth lens has a predetermined focal length. For example, the focal length of the fifth lens may be in a range of 12 to 24 mm.

The lens imaging system includes a lens of a plastic material. For example, in the lens imaging system, at least one of five or more lenses constituting a lens group may be made of a plastic material.

The lens imaging system includes an aspherical lens. For example, in the lens imaging system, at least one of five or more lenses constituting the lens group may be an aspherical lens.

The lens imaging system may include a filter, a stop, and an image sensor.

The filter is disposed between a lens disposed closest to the imaging surface and the image sensor. The filter blocks some wavelengths of light from incident light to improve a resolution of the lens imaging system. For example, the filter may block infrared light wavelengths of the incident light. The stop maybe disposed between the third lens and the fourth lens.

The lens imaging system may satisfy one or more of the following conditional expressions:
1.0<TTL/BFL<3.0;
−10.0<L1R2/f<−2.0;
−2.0<(L1R1+L1R2)/(L1R1−L1R2)<−0.1;
0.1<L2R2/f<2.0;
0.1<(L2R1+L2R2)/(L2R1−L2R2)<5.0;
0.1<f/f1<5.0;
0.1<f/f3<2.0;
−2.0<f/f4<−0.1; and
0.1<f/f5<2.0,

where TTL is a distance from an object side surface of the first lens to an imaging surface, BFL is a distance from an image side surface of the fifth lens to an imaging surface, f is a focal length of the lens imaging system, L1R1 is a radius of curvature of the object side surface of the first lens, L1R2 is a radius of curvature of the image side surface of the first lens, L2R1 is a radius of curvature of the object side surface of the second lens, L2R2 is a radius of curvature of the image side surface of the second surface, f1 is a focal length of the first lens, f3 is a focal length of the third lens, f4 is a focal length of the fourth lens, and f5 is a focal length of the fifth lens.

In addition, the lens imaging system may further satisfy one or more the following conditional expressions:
1.0<BFL/2ImgHT;
1.6<f/2ImgHT;
1.0<TTL/f<1.2;
0.8<(TTL−BFL)/BFL<1.1;
D23/D34<1;
T5<T4<T1;
max(|1/f2|,∥1/f3|,|1/f4|,|1/f5|)<|1/f1|; and
FOV<35,

where 2ImgHT is a diagonal length of the imaging surface, D23 is a distance from the image side surface of the second lens to the object side surface of the third lens, D34 is a distance from the image side surface of the third lens to the object side surface of the fourth lens, T1 is a thickness at a center of an optical axis of the first lens, T4 is a thickness at a center of an optical axis of the fourth lens, T5 is a thickness at a center of an optical axis of the fifth lens, max( ) indicates the largest value listed in parentheses, and FOV is a total field of view of the lens imaging system.

Next, a lens imaging system according to various examples will be described.

A lens imaging system according to a first example will be described with reference toFIG.1.

A lens imaging system100includes a first lens110, a second lens120, a third lens130, a fourth lens140, and a fifth lens150.

The first lens110has positive refractive power. The first lens110has a convex shape on an object side surface and a convex shape on an image side surface. The second lens120has negative refractive power. The second lens120has a convex shape on an object side surface and a concave shape on an image side surface. The third lens130has positive refractive power. The third lens130has a convex shape on an object side surface and a concave shape on an image side surface. The fourth lens140has negative refractive power. The fourth lens140has a concave shape on an object side surface and a convex shape on an image side surface. The fifth lens150has positive refractive power. The fifth lens150has a convex shape on an object side surface and a concave shape on an image side surface.

The first lens110may be the thickest lens in the lens imaging system100. For example, the thickness at the center of the first lens110along the optical axis may be greater than the thickness at the center of the second lens120to the fifth lens150along the optical axis.

The lens imaging system100may include a filter170and an image sensor180. The filter170is disposed between the fifth lens150and the image sensor180. The filter170is configured to block light of a specific wavelength from incident light. The image sensor180is disposed on an image side of the filter170. The image sensor180is configured to convert an optical signal into an electrical signal.

Table 1 shows lens characteristics of the lens imaging system100, and Table 2 shows aspherical values of the lens imaging system100.

TABLE 1Radius ofThickness/FocalRefractiveAbbeSurface No.Referencecurvaturedistancelengthindexnumber0Objectinfinityinfinity1First lens4.4501.618287.930991.535056.002−85.1030.060003Second lens9.3401.12000−8.851391.615025.9043.3001.000005Third lens17.9500.5834935.855861.660020.40670.4821.600007Fourth lens−3.3001.40000−19.295061.615025.908−5.1900.040009Fifth lens3.6511.2000017.361491.535056.00105.1997.2024211Filterinfinity0.110001.544156.0012infinity0.8705413Imaginginfinity0.00020surface

TABLE 2Sur-faceNo.KABCDEFGHI1−0.615566530.0008381862.08291E−054.32584E−06−4.64091E−073.62323E−0800.00E+000.00E+000.00E+0020.00E+006.22E−05−5.78E−063.53684E−06−4.65702E−072.8652E−080.00E+000.00E+000.00E+000.00E+0030.00E+00−4.04E−037.95822E−059.36203E−07−2.07702E−0700.00E+000.00E+000.00E+000.00E+0040.00E+00−5.30E−030.00016213−1.30902E−05−4.56916E−0600.00E+000.00E+000.00E+000.00E+0050.00E+001.57E−030.001414701−0.0002842432.44754E−0500.00E+000.00E+000.00E+000.00E+0060.00E+003.74E−040.001382994−0.0006204318.74698E−05−6.52082E−060.00E+000.00E+000.00E+000.00E+0070.00E+002.19E−02−0.0052599130.000825143−5.50761E−05−3.51393E−060.00E+000.00E+000.00E+000.00E+008−5.40E+001.97E−03−0.0006752790.00025125−7.31796E−06−1.39381E−060.00E+000.00E+000.00E+000.00E+0090.00E+00−1.41E−020.001855935−6.50915E−05−4.06056E−062.54792E−070.00E+000.00E+000.00E+000.00E+00100.00E+00−7.08E−030.000840088−4.19774E−058.41651E−06−3.04125E−070.00E+000.00E+000.00E+000.00E+00

A camera module including the lens imaging system100will be described with reference toFIGS.2and3.

A camera module10includes the lens imaging system100and lens barrels20and30. However, the configuration of the camera module10is not limited to the lens imaging system100and the lens barrels20and30. For example, the camera module10may further include a driving mechanism for driving the lens imaging system100or the lens barrels20and30.

The lens barrels20and30may be configured in plural. For example, the lens barrels20and30may be comprised of the first lens barrel20and the second lens barrel30. The first lens barrel20is configured to accommodate a partial configuration of the lens imaging system100. For example, the first lens barrel20may be configured to accommodate the lenses110,120,130,140, and150of the lens imaging system100. The first lens barrel20has a predetermined length BL1. For example, the length BL1 of the first lens barrel20may be greater than a distance D16 from the object side surface of the first lens110to the image side surface of the fifth lens150. The second lens barrel30is configured to accommodate a remaining configuration of the lens imaging system100. For example, the second lens barrel30may be configured to accommodate the filter170and the image sensor180of the lens imaging system100. The second lens barrel30has a predetermined length BL2. For example, the length BL2 of the second lens barrel30may be greater than the distance BFL from the image side surface of the fifth lens to the imaging surface of the image sensor180.

The first lens barrel20may be accommodated inside the second lens barrel30. For example, the first lens barrel20may be completely accommodated in the second lens barrel30as shown inFIG.3so that an overall height of the camera module10may be reduced. A protrusion22and a guide groove32are formed in the first lens barrel20and the second lens barrel30, respectively. For example, one or more protrusions22are formed on an outer circumferential surface of the first lens barrel20, and the same number of guide grooves32are formed on an inner circumferential surface of the second lens barrel30. The guide groove32is formed to be elongated in a longitudinal direction of the second lens barrel30. The protrusion22of the first lens barrel20is fitted into the guide groove32of the second lens barrel30.

The first lens barrel20and the second lens barrel30may be coupled to each other by the protrusion22and the guide groove32. The first lens barrel20may move in the optical axis direction along the inner circumferential surface of the second lens barrel30. For example, the first lens barrel20may freely move in the optical axis direction through the protrusion22coupled with the guide groove32.

The camera module10configured as described above may be easily mounted to the portable terminal since the height of the camera module10is adjusted by the plurality of lens barrels20and30.

A lens imaging system according to a second example will be described with reference toFIG.4.

A lens imaging system200includes a first lens210, a second lens220, a third lens230, a fourth lens240, and a fifth lens250.

The first lens210has positive refractive power. The first lens210has a convex shape on an object side surface and a convex shape on an image side surface. The second lens220has negative refractive power. The second lens220has a convex shape on an object side surface and a concave shape on an image side surface. The third lens230has positive refractive power. The third lens230has a convex shape on an object side surface and a concave shape on an image side surface. The fourth lens240has negative refractive power. The fourth lens240has a concave shape on an object side surface and a convex shape on an image side surface. The fifth lens250has positive refractive power. The fifth lens250has a convex shape on an object side surface and a concave shape on an image side surface.

The first lens210may be the thickest lens in the lens imaging system200. For example, the thickness at the center of the first lens210along the optical axis may be greater than the thickness at the center of the second lens220to the fifth lens250along the optical axis.

The lens imaging system200may include a filter270and an image sensor280. The filter270is disposed between the fifth lens250and the image sensor280. The filter270is configured to block light of a specific wavelength from incident light. For example, the filter may be configured to block light of infrared wavelengths. The image sensor280is disposed on the image side of the filter270. The image sensor280is configured to convert an optical signal into an electrical signal.

Table 3 shows lens characteristics of the lens imaging system200, and Table 4 shows aspherical values of the lens imaging system200.

TABLE 3Radius ofThickness/FocalRefractiveAbbeSurface No.Referencecurvaturedistancelengthindexnumber0Objectinfinityinfinity1First lens4.4591.847527.982721.535056.002−92.9240.060003Second lens9.4341.11825−8.792111.615025.9043.3001.000005Third lens25.0680.5527946.097041.660020.406133.0421.600007Fourth lens−3.3001.40000−21.869041.615025.908−4.9440.040009Fifth lens3.6901.1547717.190181.535056.00105.3367.2024211Filterinfinity0.110001.544156.0012infinity0.7699913Imaginginfinity0.00154surface

TABLE 4Surface No.KABCDEFGHI1−0.617190.0008342.29E−053.42E−06−3.26E−072.57E−080.00E+000.00E+0000206.36E−05−5.48E−063.86E−06−5.93E−073.83E−080.00E+000.00E+000030−0.004020.000139−8.18E−062.67E−070.00E+000.00E+000.00E+000040−0.005380.000447−3.21E−05−3.62E−060.00E+000.00E+000.00E+0000500.0008910.002096−0.00043.31E−050.00E+000.00E+000.00E+0000600.0003690.001905−0.000719.12E−05−6.74E−060.00E+000.00E+0000700.021828−0.005680.001048−9.85E−05−9.86E−070.00E+000.00E+00008−4.420310.001103−0.00060.000276−1.84E−05−4.72E−070.00E+000.00E+000090−0.014720.002374−0.000163.23E−065.72E−080.00E+000.00E+0000100−0.006668.35E−04−2.38E−055.08E−06−1.68E−070.00E+000.00E+0000

Next, a camera module including the lens imaging system200will be described with reference toFIGS.5,6A, and6B.

The camera module12includes a lens imaging system200described above and lens barrels20,30, and40. However, the configuration of the camera module12is not limited to the lens imaging system200and the lens barrels20,30, and40. For example, the camera module12may further include a driving mechanism for driving the lens imaging system200or the lens barrels20,30, and40.

The lens barrels20,30, and40may be configured in plural. For example, the lens barrels20,30, and40may be comprised of the first lens barrel20, the second lens barrel30, and the third lens barrel40. The first lens barrel20may be configured to accommodate a partial configuration of the lens imaging system200. For example, the first lens barrel20may be configured to accommodate lenses210,220, and230of the lens imaging system200. The first lens barrel20has a predetermined length BL1. For example, the length BL1 of the first lens barrel20may be greater than a distance D13 from the object side surface of the first lens210to the image side surface of the third lens230. The second lens barrel30is configured to accommodate the remaining lenses of the lens imaging system200. For example, the second lens barrel30may be configured to accommodate the fourth lens240and the fifth lens250. The second lens barrel30has a predetermined length BL2. For example, the length BL2 of the second lens barrel30may be greater than a distance D45 from the object side surface of the fourth lens240to the image side surface of the fifth lens250. The third lens barrel40may accommodate the remaining configurations of the lens imaging system200. For example, the third lens barrel40may be configured to accommodate the filter170and the image sensor180of the lens imaging system200. The third lens barrel40has a predetermined length BL3. For example, the length BL3 of the third lens barrel40may be greater than a distance BFL from the image side surface of the fifth lens250to an imaging surface of the image sensor280.

The first lens barrel20and the second lens barrel30are configured to be accommodated in the third lens barrel40. For example, the first lens barrel20and the second lens barrel30may be completely accommodated inside the third lens barrel40in an inactive state of the camera module12.

Optionally, the second lens barrel30may be configured to be disposed outwardly of the third lens barrel40. For example, the second lens barrel30may be disposed outwardly of the third lens barrel40through an opening42of the third lens barrel40. The opening42is formed on one side of the third lens barrel40. The third lens barrel40may include a cover44for selectively opening and closing the opening42. The cover44may be coupled to the third lens barrel40by a hinge member48.

A lens imaging system according to a third example will be described with reference toFIG.7.

A lens imaging system300include a first lens310, a second lens320, a third lens330, a fourth lens340, and a fifth lens350.

The first lens310has positive refractive power. The first lens310has a convex shape on an object side surface and a convex shape on an image side surface. The second lens320has negative refractive power. The second lens320has a convex shape on an object side surface and a concave shape on an image side surface. The third lens330has positive refractive power. The third lens330has a convex shape on an object side surface and a concave shape on an image side surface. The fourth lens340has negative refractive power. The fourth lens340has a concave shape on an object side surface and a convex shape on an image side surface. The fifth lens350has positive refractive power. The fifth lens350has a convex shape on an object side surface and a concave shape on an image side surface.

The first lens310may be the thickest lens in the lens imaging system300. For example, the thickness at a center of the first lens310along the optical axis may be greater than the thickness of the second lens320to the fifth lens350at a center along the optical axis.

The lens imaging system300may include a filter370and an image sensor380. The filter370is disposed between the fifth lens350and the image sensor380. The filter370is configured to block light of a specific wavelength from incident light. For example, the filter370may be configured to block light of infrared wavelengths. The image sensor380is disposed on an image side of the filter370. The image sensor380is configured to convert an optical signal into an electrical signal.

Table 5 shows lens characteristics of the lens imaging system300, and Table 6 shows aspherical values of the lens imaging system300.

TABLE 5Radius ofThickness/FocalRefractiveAbbeSurface No.Referencecurvaturedistancelengthindexnumber0Objectinfinityinfinity1First lens4.4631.942408.049641.535056.002−113.7920.043743Second lens8.7551.06248−9.221731.615025.9043.3001.000005Third lens26.2950.5204588.818931.660020.40646.8711.600007Fourth lens−3.3001.40000−25.883731.615025.908−4.7230.040009Fifth lens3.7031.1815317.467591.535056.00105.3127.2670711Filterinfinity0.110001.544156.0012infinity0.7394513Imaginginfinity0.00055surface

TABLE 6Surface No.KABCDEFGHI1−0.613710.0008313.13E−052.88E−06−3.61E−073.96E−080.00E+000.00E+0000208.96E−054.59E−063.74E−06−7.67E−077.15E−080.00E+0000030−0.003980.000133−1.00E−054.31E−070.00E+000.00E+0000040−0.005220.000513−6.36E−051.26E−060.00E+000.00E+00000500.0006590.00261−6.26E−046.66E−050.00E+000.00E+00000600.0003960.002585−9.87E−041.25E−04−5.35E−060.00E+00000700.02093−0.005068.04E−04−6.69E−05−8.87E−070.00E+000008−3.832060.000683−0.000480.000182−4.13E−06−9.41E−070.00E+0000090−0.013980.00217−0.000153.68E−062.01E−080.00E+00000100−0.006530.000817−1.81E−052.57E−068.59E−080.00E+00000

Table 7 shows optical property values of the lens imaging system according to the first to third examples.

TABLE 7FirstSecondThirdReferenceexampleexampleexampleTTL16.80516.85716.908BFL8.1838.0848.117f15.0015.0015.00F-number2.8002.8002.8002ImgHT8.0008.0008.000

TABLE 8ConditionalFirstSecondThirdexpressionexampleexampleexampleTTL/BFL2.05362.08532.0830L1R2/f−5.6735−6.1949−7.5861(L1R1 + L1R2)/−0.9006−0.9084−0.9245(L1R1 − L1R2)L2R2/f0.22000.22000.2200(L2R1 + L2R2)/2.09282.07602.2098(L1R1 − L2R2)f/f11.89131.87911.8634f/f30.41830.32540.1689f/f4−0.7774−0.6859−0.5795f/f50.86400.87260.8587BFL/2ImgHT1.02291.01051.0146f/2ImgHT1.87501.87501.8750TTL/f1.12031.12381.1272(TTL − BFL)/BFL1.05361.08531.0830D23/D340.62500.62500.6250FOV29.46029.46029.500

Next, a camera module including the lens imaging system300will be described with reference toFIGS.8,9A, and9B.

The camera module14includes the lens imaging system described above300and lens barrels20,30, and40. However, the configuration of the camera module14is not limited to the lens imaging system300and the lens barrels20,30, and40. For example, the camera module10may further include a driving mechanism for driving the lens imaging system300or the lens barrels20,30, and40.

The lens barrels20,30, and40may be configured in plural. For example, the lens barrels20,30, and40may include the first lens barrel20, the second lens barrel30, and the third lens barrel40. The first lens barrel20may be configured to accommodate a partial configuration of the lens imaging system300. For example, the first lens barrel20may be configured to accommodate lenses310,320, and330of the lens imaging system300. The first lens barrel20has a predetermined length BL1. For example, the length BL1 of the first lens barrel20may be greater than a distance D13 from the object side surface of the first lens310to the image side surface of the third lens330. The second lens barrel30is configured to accommodate the remaining lenses of the lens imaging system300. For example, the second lens barrel30may be configured to accommodate the fourth lens340and the fifth lens350. The second lens barrel30has a predetermined length BL2. For example, the length BL2 of the second lens barrel30may be greater than a distance D45 from the object side surface of the fourth lens340to the image side surface of the fifth lens350. The third lens barrel40may accommodate the remaining configurations of the lens imaging system300. For example, the third lens barrel40may be configured to accommodate the filter370and the image senor380of the lens imaging system300. The third lens barrel40has a predetermined length BL3. For example, the length BL3 of the third lens40may be greater than the distance BFL from the image side surface of the fifth lens350to the imaging surface of the image sensor380.

The first lens barrel20and the second lens barrel30are configured to be accommodated in the third lens barrel40. For example, the first lens barrel20and the second lens barrel30may be completely accommodated inside the third lens barrel40in an inactive state of the camera module14.

Optionally, the second lens barrel30may be configured to be disposed outwardly of the third lens barrel40. For example, the second lens barrel30may be disposed outwardly of the third lens barrel40through an opening42of the third lens barrel40. The opening42is formed on one side of the third lens barrel40. The third lens barrel40may include a cover44for selectively opening and closing the opening42. The cover44may be coupled to the third lens barrel40by a hinge member48.

The second lens barrel30may be coupled to the first lens barrel20by a hinge member28. Therefore, the second lens barrel30may be rotate around the hinge member28, and may be disposed in an up-and-down inverted state, as shown inFIG.9B, while being carried out through the opening42.

As set forth above, according to the examples, a lens imaging system and a camera module capable of high magnification imaging may be provided.

While this disclosure includes specific examples, it will be apparent to one of ordinary skill in the art that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed to have a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.