Patent ID: 12248126

DETAILED DESCRIPTION

A photographing optical lens assembly includes seven lens elements. The seven lens elements are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element.

There can be an air gap in a paraxial region between all adjacent lens elements of the seven lens elements of the photographing optical lens assembly; that is, each of the first through the seventh lens elements can be a single and non-cemented lens element. The manufacturing process of cemented lenses is more complex than the non-cemented lenses, particularly when an image-side surface of one lens element and an object-side surface of the following lens element need to have accurate curvatures to ensure both lenses being highly cemented. However, during the cementing process, those two lens elements might not be highly cemented due to misalignment and it is thereby not favorable for the image quality. Therefore, having an air gap in a paraxial region between every adjacent two of the seven lens elements of the photographing optical lens assembly in the present disclosure is favorable for preventing the problem associated with the cemented lens elements while improving the yield rate.

The first lens element has negative refractive power; therefore, it is favorable for providing a wide-angle lens configuration. The first lens element can have an image-side surface being concave in a paraxial region thereof; therefore, it is favorable for controlling the shape of the first lens element so as to prevent the shape of the first lens element from being overly curved, thereby achieving compactness.

The second lens element can have an object-side surface being convex in a paraxial region thereof. Therefore, it is favorable for correcting aberrations so as to improve the image quality.

The third lens element has positive refractive power; therefore, it is favorable for providing sufficient light convergence capability and reducing the total track length of the photographing optical lens assembly so as to achieve compactness. The third lens element can have an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; therefore, it is favorable for enhancing the light convergence capability of the third lens element.

The fourth lens element with negative refractive power can have an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. Therefore, it is favorable for correcting aberrations generated by the third lens element.

The fifth lens element can have an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. Therefore, it is favorable for correcting spherical aberration and astigmatism so as to improve the image quality.

The sixth lens element has an image-side surface being convex in a paraxial region thereof; therefore, it is favorable for correcting off-axis aberrations. The sixth lens element can have positive refractive power; therefore, it is favorable for reducing the total track length of the photographing optical lens assembly.

The seventh lens element with negative refractive power can have an object-side surface being convex in a paraxial region thereof, and the seventh lens element has an image-side surface being concave in a paraxial region thereof;

therefore, it is favorable for reducing the back focal length of the photographing optical lens assembly. The image-side surface of the seventh lens element has at least one critical point in an off-axis region thereof; therefore, it is favorable for correcting the Petzval sum to flatten the image surface, as well as correcting off-axis aberrations. Please refer toFIG.21, which shows a schematic view of a critical point C on the image-side surface of the seventh lens element according to the 1st embodiment of the present disclosure.

When a focal length of the second lens element is f2, and a focal length of the third lens element is f3, the following condition is satisfied: |f3/f2|<1.20. Therefore, it is favorable for preventing the refractive power of the second lens element from being overly strong so as to prevent light rays from overly refracted, thereby reducing surface reflection and aberrations. Preferably, the following condition can also be satisfied: |f3/f2|<0.75.

When a focal length of the first lens element is f1, and the focal length of the second lens element is f2, the following condition can be satisfied: |f1/f2|<0.95. Therefore, it is favorable for providing the first lens element with sufficient refractive power so as to broaden the field of view.

When a focal length of the photographing optical lens assembly is f, a focal length of the sixth lens element is f6, and a focal length of the seventh lens element is f7, the following condition can be satisfied: 0.75<|f/f6|+|f/f7|. Therefore, it is favorable for the lens elements on the image side to have sufficient refractive power so as to improve the image quality. Preferably, the following condition can be satisfied: 1.50<|f/f6|+|f/f7|. More preferably, the following condition can also be satisfied: 1.50<|f/f6|+|f/f7|<4.50.

When an Abbe number of the second lens element is V2, the following condition can be satisfied: 10<V2<32. Therefore, it is favorable for correcting chromatic aberration so as to improve peripheral image quality.

When an f-number of the photographing optical lens assembly is Fno, the following condition can be satisfied: 1.0<Fno<2.0. Therefore, it is favorable for providing a large aperture so as to capture a sufficient amount of image data in low-light conditions (e.g., night-time) or in a short exposure time (e.g., dynamic photography); furthermore, it is favorable for increasing imaging speed so as to achieve high image quality in a well-lit condition.

When an axial distance between an object-side surface of the first lens element and an image surface is TL, and a maximum image height of the photographing optical lens assembly (half of a diagonal length of an effective photosensitive area of an image sensor) is ImgH, the following condition can be satisfied: TL/ImgH<2.50. Therefore, it is favorable for obtaining a balance between the field of view and the total track length so as to keep the photographing optical lens assembly compact.

When a maximum field of view of the photographing optical lens assembly is FOV, the following condition can be satisfied: 100 [deg.]<FOV<200 [deg.]. Therefore, it is favorable for achieving a wide angle effect.

When a central thickness of the second lens element is CT2, and a central thickness of the third lens element is CT3, the following condition can be satisfied: CT2/CT3<1.20. Therefore, it is favorable for preventing the first through the third lens elements from overly close to one another, such that the lens elements of various characteristics are able to function properly within a sufficient space between all adjacent lens elements, and thereby meeting the requirements of wide field of view and compactness. Preferably, the following condition can also be satisfied: CT2/CT3<0.60.

When a maximum effective radius of the object-side surface of the first lens element is Y11, and a maximum effective radius of the image-side surface of the seventh lens element is Y72, the following condition can be satisfied: 0.50<Y11/Y72<1.20. Therefore, it is favorable for the lens elements having a suitable size for compact electronic devices, while preventing improper space utilization in the photographing optical lens assembly due to the first lens element being overly large and insufficient incident light for clear images due to the seventh lens element being overly small. Preferably, the following condition can also be satisfied: 0.60<Y11/Y72<1.20. Please refer toFIG.21, which shows a schematic view of Y11 and Y72 according to the 1st embodiment of the present disclosure.

When the maximum effective radius of the image-side surface of the seventh lens element is Y72, and the focal length of the photographing optical lens assembly is f, the following condition can be satisfied: 0.75<Y72/f. Therefore, the size of the seventh lens element is favorable for compact electronic devices.

When the focal length of the photographing optical lens assembly is f, and a curvature radius of the object-side surface of the first lens element is R1, the following condition can be satisfied: f/R1≤0. Therefore, it is favorable for preventing the shape of the first lens element from overly curved, so as to achieve a compact configuration of the photographing optical lens assembly.

When the focal length of the first lens element is f1, the focal length of the second lens element is f2, the focal length of the third lens element is f3, a focal length of the fourth lens element is f4, a focal length of the fifth lens element is f5, the focal length of the sixth lens element is f6, and the focal length of the seventh lens element is f7, the following conditions can be satisfied: |f1/f5|<1.0; |f2/f5|<1.0; |f3/f5|<1.0; |f4/f5|<1.0; |f6/f5|<1.0; and |f7/f5|<1.0. In other words, an absolute value of the ratio between the focal length of every lens element other than the fifth lens element and the focal length of the fifth lens element is smaller than 1.0. Therefore, it is favorable for the fifth lens element to have proper refractive power for correcting aberrations and to improve peripheral image quality.

When the focal length of the first lens element is f1, the focal length of the second lens element is f2, the focal length of the third lens element is f3, the focal length of the fourth lens element is f4, the focal length of the fifth lens element is f5, the focal length of the sixth lens element is f6, and the focal length of the seventh lens element is f7, the following conditions can be satisfied: |f7/f1|<1.0; |f7/f2|<1.0; |f7/f3|<1.0; |f7/f4|<1.0; |f7/f5|<1.0; and |f7/f6|<1.0. In other words, an absolute value of the ratio between the focal length of the seventh lens element and the focal length of every lens element other than the seventh lens element is smaller than 1.0. Therefore, it is favorable for enhancing the characteristic of the seventh lens element having negative refractive power to reduce the back focal length and move the exit pupil towards the object side, and thereby increasing relative illuminance on the peripheral image.

When a sum of axial distances between adjacent lens elements of the seven lens elements is ΣAT, an axial distance between the first lens element and the second lens element is T12, and an axial distance between the fifth lens element and the sixth lens element is T56, the following condition can be satisfied: 1.0<ΣAT/(T12+T56)<2.25. Therefore, the lens elements of various characteristics on the image side are able to function properly within a sufficient space between all adjacent lens elements.

When a curvature radius of an object-side surface of the sixth lens element is R11, and a curvature radius of the image-side surface of the sixth lens element is R12, the following condition can be satisfied: 0.5<(R11+R12)/(R11−R12)<3.0. Therefore, it is favorable for adjusting the shape and the refractive power of the sixth lens element so as to prevent image correction problems due to large differences in the refractive power of lens elements on the image side of the photographing optical lens assembly.

When the central thickness of the second lens element is CT2, the axial distance between the first lens element and the second lens element is T12, and an axial distance between the second lens element and the third lens element is T23, the following condition can be satisfied: CT2/(T12+T23)<1.0. Therefore, it is favorable for preventing the first through the third lens elements from overly close to one another, such that the lens elements of various characteristics are able to function properly within a sufficient space between adjacent lens elements, thereby meeting the requirements of wide field of view and compactness.

When an Abbe number of the sixth lens element is V6, and an Abbe number of the seventh lens element is V7, the following condition can be satisfied: 1.2<V6/V7<3.5. Therefore, it is favorable for the sixth lens element and the seventh lens element to correct chromatic aberration so as to improve peripheral image quality.

According to the present disclosure, the aforementioned features and conditions can be utilized in numerous combinations so as to achieve corresponding effects.

According to the present disclosure, the lens elements of the photographing optical lens assembly can be made of either glass or plastic material. When the lens elements are made of glass material, the refractive power distribution of the photographing optical lens assembly may be more flexible. The glass lens element can either be made by grinding or molding. When the lens elements are made of plastic material, the manufacturing cost can be effectively reduced. Furthermore, surfaces of each lens element can be arranged to be aspheric, which allows more control variables for eliminating aberrations thereof, the required number of the lens elements can be reduced, and the total track length of the photographing optical lens assembly can be effectively shortened. The aspheric surfaces may be formed by plastic injection molding or glass molding.

According to the present disclosure, when a lens surface is aspheric, it means that the lens surface has an aspheric shape throughout its optically effective area, or a portion(s) thereof.

According to the present disclosure, each of an object-side surface and an image-side surface has a paraxial region and an off-axis region. The paraxial region refers to the region of the surface where light rays travel close to the optical axis, and the off-axis region refers to the region of the surface away from the paraxial region. Particularly, unless otherwise stated, when the lens element has a convex surface, it indicates that the surface is convex in the paraxial region thereof; when the lens element has a concave surface, it indicates that the surface is concave in the paraxial region thereof. Moreover, when a region of refractive power or focus of a lens element is not defined, it indicates that the region of refractive power or focus of the lens element is in the paraxial region thereof.

According to the present disclosure, a critical point is a non-axial point of the lens surface where its tangent is perpendicular to the optical axis.

According to the present disclosure, an image surface of the photographing optical lens assembly, based on the corresponding image sensor, can be flat or curved, especially a curved surface being concave facing towards the object side of the photographing optical lens assembly.

According to the present disclosure, an image correction unit, such as a field flattener, can be optionally disposed between the lens element closest to the image side of the photographing optical lens assembly and the image surface for correction of aberrations such as field curvature. The optical properties of the image correction unit, such as curvature, thickness, index of refraction, position and surface shape (convex or concave surface with spherical, aspheric, diffractive or Fresnel types), can be adjusted according to the design of an image capturing unit. In general, a preferable image correction unit is, for example, a thin transparent element having a concave object-side surface and a planar image-side surface, and the thin transparent element is disposed near the image surface.

According to the present disclosure, the photographing optical lens assembly can include at least one stop, such as an aperture stop, a glare stop or a field stop. Said glare stop or said field stop is set for eliminating the stray light and thereby improving image quality thereof.

According to the present disclosure, an aperture stop can be configured as a front stop or a middle stop. A front stop disposed between an imaged object and the first lens element can provide a longer distance between an exit pupil of the photographing optical lens assembly and the image surface to produce a telecentric effect, and thereby improves the image-sensing efficiency of an image sensor (for example, CCD or CMOS). A middle stop disposed between the first lens element and the image surface is favorable for enlarging the viewing angle of the photographing optical lens assembly and thereby provides a wider field of view for the same.

According to the above description of the present disclosure, the following specific embodiments are provided for further explanation.

1st Embodiment

FIG.1is a schematic view of an image capturing unit according to the 1st embodiment of the present disclosure.FIG.2shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 1st embodiment. InFIG.1, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor195. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element110, a second lens element120, an aperture stop100, a third lens element130, a fourth lens element140, a fifth lens element150, a sixth lens element160, a seventh lens element170, an IR-cut filter180and an image surface190. The photographing optical lens assembly includes seven single and non-cemented lens elements (110,120,130,140,150,160and170) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element110with negative refractive power has an object-side surface111being concave in a paraxial region thereof and an image-side surface112being concave in a paraxial region thereof. The first lens element110is made of plastic material and has the object-side surface111and the image-side surface112being both aspheric.

The second lens element120with negative refractive power has an object-side surface121being convex in a paraxial region thereof and an image-side surface122being concave in a paraxial region thereof. The second lens element120is made of plastic material and has the object-side surface121and the image-side surface122being both aspheric.

The third lens element130with positive refractive power has an object-side surface131being convex in a paraxial region thereof and an image-side surface132being convex in a paraxial region thereof. The third lens element130is made of plastic material and has the object-side surface131and the image-side surface132being both aspheric.

The fourth lens element140with negative refractive power has an object-side surface141being convex in a paraxial region thereof and an image-side surface142being concave in a paraxial region thereof. The fourth lens element140is made of plastic material and has the object-side surface141and the image-side surface142being both aspheric.

The fifth lens element150with positive refractive power has an object-side surface151being convex in a paraxial region thereof and an image-side surface152being concave in a paraxial region thereof. The fifth lens element150is made of plastic material and has the object-side surface151and the image-side surface152being both aspheric.

The sixth lens element160with positive refractive power has an object-side surface161being concave in a paraxial region thereof and an image-side surface162being convex in a paraxial region thereof. The sixth lens element160is made of plastic material and has the object-side surface161and the image-side surface162being both aspheric.

The seventh lens element170with negative refractive power has an object-side surface171being convex in a paraxial region thereof and an image-side surface172being concave in a paraxial region thereof. The seventh lens element170is made of plastic material and has the object-side surface171and the image-side surface172being both aspheric. The image-side surface172of the seventh lens element170has at least one critical point in an off-axis region thereof.

The IR-cut filter180is made of glass material and located between the seventh lens element170and the image surface190, and will not affect the focal length of the photographing optical lens assembly. The image sensor195is disposed on or near the image surface190of the photographing optical lens assembly.

The equation of the aspheric surface profiles of the aforementioned lens elements of the 1st embodiment is expressed as follows:

X⁡(Y)=(Y2/R)/(1+sqrt(1-(1+k)×(Y/R)2))+∑i(Ai)×(Yi),
where,X is the relative distance between a point on the aspheric surface spaced at a distance Y from an optical axis and the tangential plane at the aspheric surface vertex on the optical axis;Y is the vertical distance from the point on the aspheric surface to the optical axis;R is the curvature radius;k is the conic coefficient; andAi is the i-th aspheric coefficient, and in the embodiments, i may be, but is not limited to, 4, 6, 8, 10, 12, 14, 16, 18 and 20.

In the photographing optical lens assembly of the image capturing unit according to the 1st embodiment, when a focal length of the photographing optical lens assembly is f, an f-number of the photographing optical lens assembly is Fno, and half of a maximum field of view of the photographing optical lens assembly is HFOV, these parameters have the following values: f=2.88 millimeters (mm), Fno=1.98, HFOV=52.5 degrees (deg.).

When the maximum field of view of the photographing optical lens assembly is FOV, the following condition is satisfied: FOV=105.0 [deg.].

When an Abbe number of the second lens element120is V2, the following condition is satisfied: V2=19.5.

When an Abbe number of the sixth lens element160is V6, and an Abbe number of the seventh lens element170is V7, the following condition is satisfied:

V⁢6/V⁢7=1.3⁢8.

When a central thickness of the second lens element120is CT2, an axial distance between the first lens element110and the second lens element120is T12, and an axial distance between the second lens element120and the third lens element130is T23, the following condition is satisfied: CT2/(T12+T23)=0.25. In this embodiment, an axial distance between two adjacent lens elements is an air gap in a paraxial region between the two adjacent lens elements.

When the central thickness of the second lens element120is CT2, and a central thickness of the third lens element130is CT3, the following condition is satisfied: CT2/CT3=0.33.

When a sum of axial distances between adjacent lens elements of the seven lens elements is ΣAT, the axial distance between the first lens element110and the second lens element120is T12, and an axial distance between the fifth lens element150and the sixth lens element160is T56, the following condition is satisfied: Σ/(12+T56)=2.00.

When an axial distance between the object-side surface111of the first lens element110and the image surface190is TL, and a maximum image height of the photographing optical lens assembly is ImgH, the following condition is satisfied: TL/ImgH=1.79.

When the focal length of the photographing optical lens assembly is f, and a curvature radius of the object-side surface111of the first lens element110is R1, the following condition is satisfied: f/R1=−0.35.

When a curvature radius of the object-side surface161of the sixth lens element160is R11, and a curvature radius of the image-side surface162of the sixth lens element160is R12, the following condition is satisfied: (R11+R12)/(R11−R12)=1.01.

When a focal length of the first lens element110is f1, a focal length of the second lens element120is f2, a focal length of the third lens element130is f3, a focal length of the fourth lens element140is f4, a focal length of the fifth lens element150is f5, a focal length of the sixth lens element160is f6, and a focal length of the seventh lens element170is f7, the following conditions are satisfied: |f1/|f5|=0.08; |f2/|f5|=2.90; |f3/|f5|=0.03; |f4/|f5|=0.08; |f6/|f5|=0.03; and |f7/|f5|=0.03.

When the focal length of the first lens element110is f1, the focal length of the second lens element120is f2, the focal length of the third lens element130is f3, the focal length of the fourth lens element140is f4, the focal length of the fifth lens element150is f5, the focal length of the sixth lens element160is f6, and the focal length of the seventh lens element170is f7, the following conditions are satisfied: |f7/f1|=0.40; |f7/f2|=0.01; |f7/f3|=0.99; |f7/f4|=0.41; |f7/f5|=0.03; and |f7/f6|=0.99.

When the focal length of the second lens element120is f2, and the focal length of the third lens element130is f3, the following condition is satisfied: |f3/f2|=0.01.

When the focal length of the first lens element110is f1, and the focal length of the second lens element120is f2, the following condition is satisfied: |f1/f2|=0.03.

When the focal length of the photographing optical lens assembly is f, the focal length of the sixth lens element160is f6, and the focal length of the seventh lens element170is f7, the following condition is satisfied: |f/f6|+|f/f7|=2.81.

When a maximum effective radius of the object-side surface111of the first lens element110is Y11, and a maximum effective radius of the image-side surface172of the seventh lens element170is Y72, the following condition is satisfied: Y11/Y72=0.59.

When the maximum effective radius of the image-side surface172of the seventh lens element170is Y72, and the focal length of the photographing optical lens assembly is f, the following condition is satisfied: Y72/f=0.93.

The detailed optical data of the 1st embodiment are shown in Table 1 and the aspheric surface data are shown in Table 2 below.

TABLE 11st Embodimentf = 2.88 mm, Fno = 1.98, HFOV = 52.5 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−8.125(ASP)0.200Plastic1.54556.1−5.0424.186(ASP)0.5853Lens 22.478(ASP)0.200Plastic1.67119.5−175.7742.348(ASP)0.4565Ape. StopPlano−0.2416Lens 31.671(ASP)0.608Plastic1.54456.02.057−2.904(ASP)0.2848Lens 443.552(ASP)0.200Plastic1.67119.5−4.9193.054(ASP)0.12410Lens 52.548(ASP)0.307Plastic1.54456.060.61112.644(ASP)0.42812Lens 6−199.229(ASP)0.534Plastic1.54456.02.0613−1.118(ASP)0.39214Lens 78.121(ASP)0.250Plastic1.55940.4−2.04150.986(ASP)0.60016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.36518ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).

TABLE 2Aspheric CoefficientsSurface #12346k =−8.6541E+018.9386E+00−1.9351E+01−1.8309E+01−4.4945E+00A4 =1.4050E−012.2708E−01−2.0179E−02−6.1755E−025.2370E−02A6 =−1.6737E−01−5.3948E−01−3.3968E−02−1.2781E−02−1.3358E−02A8 =2.0525E−011.6714E+00−6.3888E−01−5.5922E−013.5625E−02A10 =−2.3375E−01−3.7682E+002.4664E+002.4002E+00−4.5672E−02A12 =1.9856E−015.4653E+00−5.3258E+00−5.7667E+001.3349E−02A14 =−1.1236E−01−5.0334E+006.8135E+008.3042E+001.2507E−02A16 =3.9377E−022.8396E+00−5.1024E+00−6.9914E+00−2.9559E−03A18 =−7.6753E−03−8.9659E−012.0911E+003.1850E+00−1.3768E−02A20 =6.3353E−041.2179E−01−3.6377E−01−6.0613E−011.4201E−02Surface #7891011k =−2.8016E+00−8.9710E+014.6734E+00−3.6848E+01−7.1162E+01A4 =1.6862E−021.4204E−016.2868E−02−1.4154E−029.6525E−02A6 =−6.5351E−02−3.9906E−01−3.8282E−02−1.0253E−01−5.9375E−01A8 =8.9064E−024.6349E−01−3.4218E−015.1143E−011.0937E+00A10 =−4.2507E−02−2.8255E−016.3686E−01−1.2422E+00−7.1540E−01A12 =−2.5782E−021.1446E−029.3230E−021.9314E+00−1.1032E+00A14 =4.3755E−034.0538E−02−1.5784E+00−1.9821E+002.8685E+00A16 =1.2059E−022.3417E−032.0800E+001.3211E+00−2.7097E+00A18 =1.3077E−021.0907E−03−1.1742E+00−5.0484E−011.2409E+00A20 =−4.0304E−03−1.8842E−032.5410E−018.1400E−02−2.2641E−01Surface #12131415k =5.8680E+01−2.3757E+003.4522E+00−5.3544E+00A4 =3.9209E−021.5626E−01−1.8156E−01−1.2795E−01A6 =−3.8394E−01−2.3588E−011.5380E−019.0030E−02A8 =1.6791E+004.2674E−01−9.0310E−02−4.5026E−02A10 =−3.9969E+00−4.9809E−014.0455E−021.5034E−02A12 =5.7812E+004.3329E−01−1.2723E−02−3.2773E−03A14 =−5.2612E+00−2.7259E−012.6056E−034.5271E−04A16 =2.9426E+001.0471E−01−3.2635E−04−3.7193E−05A18 =−9.2967E−01−2.0959E−022.2587E−051.5895E−06A20 =1.2701E−011.6405E−03−6.6046E−07−2.5019E−08

In Table 1, the curvature radius, the thickness and the focal length are shown in millimeters (mm). Surface numbers 0-18 represent the surfaces sequentially arranged from the object side to the image side along the optical axis. In Table 2, k represents the conic coefficient of the equation of the aspheric surface profiles. A4-A20 represent the aspheric coefficients ranging from the 4th order to the 20th order. The tables presented below for each embodiment are the corresponding schematic parameter and aberration curves, and the definitions of the tables are the same as Table 1 and Table 2 of the 1st embodiment. Therefore, an explanation in this regard will not be provided again.

2nd Embodiment

FIG.3is a schematic view of an image capturing unit according to the 2nd embodiment of the present disclosure.FIG.4shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 2nd embodiment. InFIG.3, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor295. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element210, a second lens element220, an aperture stop200, a third lens element230, a fourth lens element240, a fifth lens element250, a sixth lens element260, a seventh lens element270, an IR-cut filter280and an image surface290. The photographing optical lens assembly includes seven single and non-cemented lens elements (210,220,230,240,250,260and270) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element210with negative refractive power has an object-side surface211being concave in a paraxial region thereof and an image-side surface212being concave in a paraxial region thereof. The first lens element210is made of plastic material and has the object-side surface211and the image-side surface212being both aspheric.

The second lens element220with positive refractive power has an object-side surface221being convex in a paraxial region thereof and an image-side surface222being convex in a paraxial region thereof. The second lens element220is made of plastic material and has the object-side surface221and the image-side surface222being both aspheric.

The third lens element230with positive refractive power has an object-side surface231being convex in a paraxial region thereof and an image-side surface232being convex in a paraxial region thereof. The third lens element230is made of glass material and has the object-side surface231and the image-side surface232being both aspheric.

The fourth lens element240with negative refractive power has an object-side surface241being convex in a paraxial region thereof and an image-side surface242being concave in a paraxial region thereof. The fourth lens element240is made of plastic material and has the object-side surface241and the image-side surface242being both aspheric.

The fifth lens element250with positive refractive power has an object-side surface251being convex in a paraxial region thereof and an image-side surface252being concave in a paraxial region thereof. The fifth lens element250is made of plastic material and has the object-side surface251and the image-side surface252being both aspheric.

The sixth lens element260with positive refractive power has an object-side surface261being convex in a paraxial region thereof and an image-side surface262being convex in a paraxial region thereof. The sixth lens element260is made of plastic material and has the object-side surface261and the image-side surface262being both aspheric.

The seventh lens element270with negative refractive power has an object-side surface271being convex in a paraxial region thereof and an image-side surface272being concave in a paraxial region thereof. The seventh lens element270is made of plastic material and has the object-side surface271and the image-side surface272being both aspheric. The image-side surface272of the seventh lens element270has at least one critical point in an off-axis region thereof.

The IR-cut filter280is made of glass material and located between the seventh lens element270and the image surface290, and will not affect the focal length of the photographing optical lens assembly. The image sensor295is disposed on or near the image surface290of the photographing optical lens assembly.

The detailed optical data of the 2nd embodiment are shown in Table 3 and the aspheric surface data are shown in Table 4 below.

TABLE 32nd Embodimentf = 2.64 mm, Fno = 1.95, HFOV = 55.8 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−5.067(ASP)0.300Plastic1.54456.0−2.8322.260(ASP)0.4703Lens 22.641(ASP)0.520Plastic1.54456.03.104−4.327(ASP)0.2425Ape. StopPlano−0.1716Lens 33.329(ASP)0.654Glass1.54262.93.017−2.991(ASP)0.2088Lens 413.549(ASP)0.205Plastic1.67119.5−4.1892.307(ASP)0.12510Lens 51.787(ASP)0.250Plastic1.54456.014.97112.176(ASP)0.54512Lens 6135.388(ASP)0.468Plastic1.54456.03.0013−1.648(ASP)0.21514Lens 71.632(ASP)0.250Plastic1.54345.6−2.95150.765(ASP)0.50016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.41218ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the image-side surface 262 (Surface 13) is 1.580 mm.

TABLE 4Aspheric CoefficientsSurface #12346k =−2.0881E−012.4584E+00−2.9839E+00−5.6179E+01−1.0428E+01A4 =1.6364E−012.3028E−01−1.2195E−02−1.5035E−014.1409E−02A6 =−2.2177E−01−2.7502E−01−4.5640E−022.6770E−01−6.0104E−03A8 =2.1815E−013.1575E−01−1.4706E−01−1.2492E+006.2745E−02A10 =−1.6758E−01−4.2706E−012.7632E−013.9744E+00−2.1785E−02A12 =1.0211E−015.6626E−01−2.8373E−01−7.9112E+003.9062E−02A14 =−4.7250E−02−5.6706E−019.1234E−029.8023E+006.9117E−02A16 =1.5038E−023.5759E−011.0204E−01−7.3024E+00−8.5625E−02A18 =−2.8306E−03−1.3124E−01−8.0465E−022.9979E+00−1.1682E−01A20 =2.3242E−042.3008E−021.4414E−02−5.1806E−011.2808E−01Surface #7891011k =2.1571E+009.0000E+012.2854E+00−1.6536E+01−3.5985E+01A4 =2.7770E−021.2824E−01−2.5086E−02−6.4741E−021.3470E−01A6 =−1.1757E−01−4.4973E−011.8988E−011.6141E−01−9.4720E−01A8 =1.0442E−014.6608E−01−9.1926E−01−2.1417E−013.3215E+00A10 =1.1243E−02−2.6446E−011.4580E+004.9751E−01−7.4773E+00A12 =5.0201E−023.5351E−02−3.4768E−01−1.3585E+001.1259E+01A14 =1.8291E−022.2404E−02−2.0909E+002.2334E+00−1.1217E+01A16 =−1.3733E−01−3.2174E−023.1627E+00−2.0479E+007.0548E+00A18 =−6.9919E−02−3.4001E−02−1.9345E+001.0032E+00−2.5197E+00A20 =1.7376E−012.9213E−024.5140E−01−2.0975E−013.8699E−01Surface #12131415k =−1.2276E+01−4.2620E+00−2.9626E+01−4.5274E+00A4 =1.1007E−012.5273E−014.8795E−02−1.1709E−01A6 =−1.3173E−01−1.5376E−01−5.3151E−01−5.4822E−02A8 =−2.7053E−01−6.5970E−016.0419E−011.2568E−01A10 =6.5165E−011.5257E+00−3.2604E−01−9.2618E−02A12 =−3.9074E−01−1.5023E+001.0064E−013.8877E−02A14 =−2.0846E−018.3357E−01−1.8593E−02−9.9787E−03A16 =3.9069E−01−2.7449E−012.0116E−031.5372E−03A18 =−1.9341E−015.0606E−02−1.1531E−04−1.3003E−04A20 =3.3591E−02−4.0427E−032.6037E−064.6316E−06

In the 2nd embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 2nd embodiment, so an explanation in this regard will not be provided again. Moreover, these parameters can be calculated from Table 3 and Table 4 as the following values and satisfy the following conditions:

2nd Embodimentf [mm]2.64|f4/|f5|0.28Fno1.95|f6/|f5|0.20HFOV [deg.]55.8|f7/|f5|0.20FOV [deg.]111.6|f7/f1|1.04V256.0|f7/f2|0.95V6/V71.23|f7/f3|0.98CT2/(T12 + T23)0.96|f7/f4|0.71CT2/CT30.80|f7/f5|0.20ΣAT/(T12 + T56)1.61|f7/f6|0.99TL/ImgH1.76|f3/f2|0.97f/R1−0.52|f1/f2|0.91(R11 + R12)/(R11 − R12)0.98|f/f6| + |f/f7|1.78|f1/|f5|0.19Y11/Y720.66|f2/|f5|0.21Y72/f0.91|f3/|f5|0.20——

3rd Embodiment

FIG.5is a schematic view of an image capturing unit according to the 3rd embodiment of the present disclosure.FIG.6shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 3rd embodiment. InFIG.5, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor395. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element310, a second lens element320, an aperture stop300, a third lens element330, a fourth lens element340, a fifth lens element350, a sixth lens element360, a seventh lens element370, an IR-cut filter380and an image surface390. The photographing optical lens assembly includes seven single and non-cemented lens elements (310,320,330,340,350,360and370) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element310with negative refractive power has an object-side surface311being concave in a paraxial region thereof and an image-side surface312being concave in a paraxial region thereof. The first lens element310is made of glass material and has the object-side surface311and the image-side surface312being both aspheric.

The second lens element320with positive refractive power has an object-side surface321being convex in a paraxial region thereof and an image-side surface322being convex in a paraxial region thereof. The second lens element320is made of plastic material and has the object-side surface321and the image-side surface322being both aspheric.

The third lens element330with positive refractive power has an object-side surface331being convex in a paraxial region thereof and an image-side surface332being convex in a paraxial region thereof. The third lens element330is made of plastic material and has the object-side surface331and the image-side surface332being both aspheric.

The fourth lens element340with negative refractive power has an object-side surface341being concave in a paraxial region thereof and an image-side surface342being concave in a paraxial region thereof. The fourth lens element340is made of plastic material and has the object-side surface341and the image-side surface342being both aspheric.

The fifth lens element350with positive refractive power has an object-side surface351being convex in a paraxial region thereof and an image-side surface352being concave in a paraxial region thereof. The fifth lens element350is made of plastic material and has the object-side surface351and the image-side surface352being both aspheric.

The sixth lens element360with positive refractive power has an object-side surface361being concave in a paraxial region thereof and an image-side surface362being convex in a paraxial region thereof. The sixth lens element360is made of plastic material and has the object-side surface361and the image-side surface362being both aspheric.

The seventh lens element370with negative refractive power has an object-side surface371being convex in a paraxial region thereof and an image-side surface372being concave in a paraxial region thereof. The seventh lens element370is made of plastic material and has the object-side surface371and the image-side surface372being both aspheric. The image-side surface372of the seventh lens element370has at least one critical point in an off-axis region thereof.

The IR-cut filter380is made of glass material and located between the seventh lens element370and the image surface390, and will not affect the focal length of the photographing optical lens assembly. The image sensor395is disposed on or near the image surface390of the photographing optical lens assembly.

The detailed optical data of the 3rd embodiment are shown in Table 5 and the aspheric surface data are shown in Table 6 below.

TABLE 53rd Embodimentf = 2.44 mm, Fno = 1.95, HFOV = 60.6 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−5.420(ASP)0.300Glass1.61847.8−2.3322.001(ASP)0.5273Lens 22.827(ASP)0.601Plastic1.55051.02.674−2.815(ASP)0.2425Ape. StopPlano−0.1926Lens 33.288(ASP)0.882Plastic1.54456.02.937−2.804(ASP)0.1658Lens 4−195.261(ASP)0.200Plastic1.67119.5−3.4392.328(ASP)0.08110Lens 51.504(ASP)0.256Plastic1.54456.014.27111.753(ASP)0.59312Lens 6−5.292(ASP)0.465Plastic1.54456.02.4313−1.090(ASP)0.12914Lens 71.682(ASP)0.300Plastic1.58632.6−2.62150.750(ASP)0.50016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.44118ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the image-side surface 362 (Surface 13) is 1.630 mm.

TABLE 6Aspheric CoefficientsSurface #12346k =1.6033E+001.7932E+00−3.7535E+00−9.1121E+00−1.5691E+01A4 =1.6159E−012.2485E−01−3.4225E−02−1.3263E−015.7773E−02A6 =−2.2159E−01−2.8084E−01−5.4552E−022.7694E−018.5202E−02A8 =2.1834E−012.9944E−01−1.1318E−01−1.2598E+00−3.9560E−03A10 =−1.6752E−01−3.9361E−012.8565E−013.9676E+00−1.0121E−01A12 =1.0210E−015.7495E−01−2.9430E−01−7.9093E+001.2516E−01A14 =−4.7255E−02−5.8124E−017.8978E−029.8025E+006.2228E−02A16 =1.5037E−023.4015E−019.7873E−02−7.3063E+00−1.5137E−02A18 =−2.8305E−03−1.3415E−01−7.8870E−022.9940E+00−2.5092E−01A20 =2.3258E−044.0058E−022.2326E−02−5.1414E−011.7671E−01Surface #7891011k =3.2533E+00−8.6146E+011.5577E+00−1.3459E+01−2.1903E+01A4 =−2.9410E−027.5533E−02−5.6010E−02−1.0426E−011.1893E−01A6 =−4.2980E−02−5.5001E−012.2246E−011.5596E−01−9.8028E−01A8 =2.4404E−017.2858E−01−9.0211E−01−1.9473E−013.3347E+00A10 =−1.7086E−01−2.9775E−011.4651E+005.0100E−01−7.4684E+00A12 =−1.5304E−01−2.7654E−01−3.8857E−01−1.3659E+001.1254E+01A14 =3.1375E−01−9.5771E−02−2.1356E+002.2265E+00−1.1223E+01A16 =1.2962E−012.1009E−013.2013E+00−2.0451E+007.0564E+00A18 =−5.3282E−014.1530E−01−1.8636E+001.0069E+00−2.5203E+00A20 =3.0617E−01−4.2297E−014.0007E−01−2.1054E−013.8878E−01Surface #12131415k =−9.0000E+01−4.3489E+00−4.6587E+01−6.3353E+00A4 =6.9282E−021.0468E−011.8296E−012.8597E−02A6 =−6.7644E−024.2365E−01−2.9871E−01−1.0080E−01A8 =4.4990E−01−1.2915E+001.9126E−018.0033E−02A10 =−1.6654E+001.6339E+00−6.6507E−02−3.9102E−02A12 =2.8153E+00−1.1693E+001.3173E−021.2760E−02A14 =−2.6100E+005.0436E−01−1.3639E−03−2.7411E−03A16 =1.3776E+00−1.3053E−014.2788E−053.6667E−04A18 =−3.9049E−011.8813E−023.8006E−06−2.7389E−05A20 =4.6267E−02−1.1717E−03−2.6491E−078.6650E−07

In the 3rd embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 3rd embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 5 and Table 6 as the following values and satisfy the following conditions:

3rd Embodimentf [mm]2.44|f4/|f5|0.24Fno1.95|f6/|f5|0.17HFOV [deg.]60.6|f7/|f5|0.18FOV [deg.]121.2|f7/f1|1.12V251.0|f7/f2|0.98V6/V71.72|f7/f3|0.89CT2/(T12 + T23)1.04|f7/f4|0.76CT2/CT30.68|f7/f5|0.18ΣAT/(T12 + T56)1.38|f7/f6|1.08TL/ImgH1.85|f3/f2|1.10f/R1−0.45|f1/f2|0.87(R11 + R12)/(R11 − R12)1.52|f/f6| + |f/f7|1.94|f1/|f5|0.16Y11/Y720.54|f2/|f5|0.19Y72/f1.06|f3/|f5|0.21——

4th Embodiment

FIG.7is a schematic view of an image capturing unit according to the 4th embodiment of the present disclosure.FIG.8shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 4th embodiment. InFIG.7, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor495. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element410, a second lens element420, an aperture stop400, a third lens element430, a fourth lens element440, a fifth lens element450, a sixth lens element460, a seventh lens element470, an IR-cut filter480and an image surface490. The photographing optical lens assembly includes seven single and non-cemented lens elements (410,420,430,440,450,460and470) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element410with negative refractive power has an object-side surface411being concave in a paraxial region thereof and an image-side surface412being concave in a paraxial region thereof. The first lens element410is made of plastic material and has the object-side surface411and the image-side surface412being both aspheric.

The second lens element420with positive refractive power has an object-side surface421being convex in a paraxial region thereof and an image-side surface422being convex in a paraxial region thereof. The second lens element420is made of plastic material and has the object-side surface421and the image-side surface422being both aspheric.

The third lens element430with positive refractive power has an object-side surface431being convex in a paraxial region thereof and an image-side surface432being convex in a paraxial region thereof. The third lens element430is made of plastic material and has the object-side surface431and the image-side surface432being both aspheric.

The fourth lens element440with negative refractive power has an object-side surface441being convex in a paraxial region thereof and an image-side surface442being concave in a paraxial region thereof. The fourth lens element440is made of plastic material and has the object-side surface441and the image-side surface442being both aspheric.

The fifth lens element450with positive refractive power has an object-side surface451being convex in a paraxial region thereof and an image-side surface452being concave in a paraxial region thereof. The fifth lens element450is made of plastic material and has the object-side surface451and the image-side surface452being both aspheric.

The sixth lens element460with positive refractive power has an object-side surface461being concave in a paraxial region thereof and an image-side surface462being convex in a paraxial region thereof. The sixth lens element460is made of plastic material and has the object-side surface461and the image-side surface462being both aspheric.

The seventh lens element470with negative refractive power has an object-side surface471being convex in a paraxial region thereof and an image-side surface472being concave in a paraxial region thereof. The seventh lens element470is made of plastic material and has the object-side surface471and the image-side surface472being both aspheric. The image-side surface472of the seventh lens element470has at least one critical point in an off-axis region thereof.

The IR-cut filter480is made of glass material and located between the seventh lens element470and the image surface490, and will not affect the focal length of the photographing optical lens assembly. The image sensor495is disposed on or near the image surface490of the photographing optical lens assembly.

The detailed optical data of the 4th embodiment are shown in Table 7 and the aspheric surface data are shown in Table 8 below.

TABLE 74th Embodimentf = 2.50 mm, Fno = 1.92, HFOV = 60.6 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−5.657(ASP)0.300Plastic1.54455.9−2.7822.105(ASP)0.7033Lens 23.072(ASP)0.553Plastic1.54455.92.784−2.788(ASP)0.2525Ape. StopPlano−0.2026Lens 33.575(ASP)0.942Plastic1.54455.93.117−2.917(ASP)0.0848Lens 417.466(ASP)0.200Plastic1.68818.7−3.9792.348(ASP)0.19110Lens 51.741(ASP)0.231Plastic1.54455.936.96111.817(ASP)0.61612Lens 6−6.040(ASP)0.461Plastic1.54455.93.6913−1.547(ASP)0.07414Lens 71.173(ASP)0.300Plastic1.58428.2−4.06150.711(ASP)0.70016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.18718ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the image-side surface 462 (Surface 13) is 1.660 mm.

TABLE 8Aspheric CoefficientsSurface #12346k =1.9159E+005.2724E−01−1.3612E+01−1.1853E+01−8.4282E+00A4 =1.5313E−011.8085E−01−1.3539E−02−7.7504E−021.3023E−01A6 =−2.1348E−01−2.7079E−02−1.3595E−01−1.2662E−01−4.7274E−01A8 =2.1787E−01−4.9221E−011.5878E−016.3106E−013.1661E+00A10 =−1.6418E−011.1434E+00−9.7326E−02−1.8188E+00−1.2272E+01A12 =8.7962E−02−9.5274E−01−4.9607E−013.2956E+003.0321E+01A14 =−3.2125E−02−1.7616E−011.3616E+00−3.7812E+00−4.7259E+01A16 =7.5524E−038.8221E−01−1.4654E+002.6726E+004.4920E+01A18 =−1.0251E−03−5.8621E−017.3879E−01−1.0673E+00−2.3759E+01A20 =6.0773E−051.3016E−01−1.4233E−011.8627E−015.3585E+00Surface #7891011k =1.7175E+00−9.0000E+012.2598E+00−8.3618E+00−1.3842E+01A4 =1.5733E−012.7451E−011.2377E−01−3.9390E−026.1853E−02A6 =−1.3014E+00−2.3628E+00−9.3322E−015.5998E−03−2.2279E−01A8 =5.9751E+001.0548E+012.9063E+00−3.2031E−012.4145E−01A10 =−1.9551E+01−3.5802E+01−6.3501E+001.6772E+004.6121E−02A12 =4.6740E+018.6605E+019.9763E+00−4.0166E+00−4.8305E−01A14 =−7.6709E+01−1.4028E+02−1.0960E+015.4124E+006.3398E−01A16 =8.0317E+011.4255E+027.9499E+00−4.2620E+00−4.2027E−01A18 =−4.7797E+01−8.1778E+01−3.4358E+001.8384E+001.4772E−01A20 =1.2237E+012.0111E+016.7058E−01−3.3697E−01−2.2124E−02Surface #12131415k =−9.0000E+01−6.1118E+00−1.5157E+01−5.1449E+00A4 =1.6243E−015.5570E−02−1.3110E−02−7.1062E−02A6 =−4.3513E−013.9586E−014.7378E−025.5386E−02A8 =1.3246E+00−7.7808E−01−7.6795E−02−3.2421E−02A10 =−2.6589E+007.1068E−014.8410E−027.7549E−03A12 =3.1495E+00−4.0754E−01−1.6716E−024.2446E−04A14 =−2.2753E+001.5658E−013.4614E−03−6.2763E−04A16 =9.8919E−01−4.0172E−02−4.2752E−041.3518E−04A18 =−2.3832E−016.3162E−032.8958E−05−1.2543E−05A20 =2.4478E−02−4.5550E−04−8.2609E−074.4171E−07

In the 4th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 4th embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 7 and Table 8 as the following values and satisfy the following conditions:

4th Embodimentf [mm]2.50|f4/|f5|0.11Fno1.92|f6/|f5|0.10HFOV [deg.]60.6|f7/|f5|0.11FOV [deg.]121.2|f7/f1|1.46V255.9|f7/f2|1.46V6/V71.98|f7/f3|1.30CT2/(T12 + T23)0.73|f7/f4|1.02CT2/CT30.59|f7/f5|0.11ΣAT/(T12 + T56)1.30|f7/f6|1.10TL/ImgH1.89|f3/f2|1.12f/R1−0.44|f1/f2|1.00(R11 + R12)/(R11 − R12)1.69|f/f6| + |f/f7|1.29|f1/|f5|0.08Y11/Y720.68|f2/|f5|0.08Y72/f1.05|f3/|f5|0.08——

5th Embodiment

FIG.9is a schematic view of an image capturing unit according to the 5th embodiment of the present disclosure.FIG.10shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 5th embodiment. InFIG.9, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor595. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element510, a second lens element520, an aperture stop500, a third lens element530, a fourth lens element540, a fifth lens element550, a sixth lens element560, a seventh lens element570, an IR-cut filter580and an image surface590. The photographing optical lens assembly includes seven single and non-cemented lens elements (510,520,530,540,550,560and570) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element510with negative refractive power has an object-side surface511being concave in a paraxial region thereof and an image-side surface512being concave in a paraxial region thereof. The first lens element510is made of plastic material and has the object-side surface511and the image-side surface512being both aspheric.

The second lens element520with positive refractive power has an object-side surface521being convex in a paraxial region thereof and an image-side surface522being concave in a paraxial region thereof. The second lens element520is made of plastic material and has the object-side surface521and the image-side surface522being both aspheric.

The third lens element530with positive refractive power has an object-side surface531being convex in a paraxial region thereof and an image-side surface532being convex in a paraxial region thereof. The third lens element530is made of plastic material and has the object-side surface531and the image-side surface532being both aspheric.

The fourth lens element540with negative refractive power has an object-side surface541being convex in a paraxial region thereof and an image-side surface542being concave in a paraxial region thereof. The fourth lens element540is made of plastic material and has the object-side surface541and the image-side surface542being both aspheric.

The fifth lens element550with positive refractive power has an object-side surface551being convex in a paraxial region thereof and an image-side surface552being concave in a paraxial region thereof. The fifth lens element550is made of plastic material and has the object-side surface551and the image-side surface552being both aspheric.

The sixth lens element560with positive refractive power has an object-side surface561being convex in a paraxial region thereof and an image-side surface562being convex in a paraxial region thereof. The sixth lens element560is made of plastic material and has the object-side surface561and the image-side surface562being both aspheric.

The seventh lens element570with negative refractive power has an object-side surface571being concave in a paraxial region thereof and an image-side surface572being concave in a paraxial region thereof. The seventh lens element570is made of plastic material and has the object-side surface571and the image-side surface572being both aspheric. The image-side surface572of the seventh lens element570has at least one critical point in an off-axis region thereof.

The IR-cut filter580is made of glass material and located between the seventh lens element570and the image surface590, and will not affect the focal length of the photographing optical lens assembly. The image sensor595is disposed on or near the image surface590of the photographing optical lens assembly.

The detailed optical data of the 5th embodiment are shown in Table 9 and the aspheric surface data are shown in Table 10 below.

TABLE 95th Embodimentf = 3.06 mm, Fno = 1.93, HFOV = 52.5 deg.Surface#Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−3.818(ASP)0.200Plastic1.54456.0−5.23211.397(ASP)0.3253Lens 21.559(ASP)0.231Plastic1.55940.430.3941.626(ASP)0.4425Ape. StopPlano−0.2606Lens 31.634(ASP)0.568Plastic1.54456.02.267−4.340(ASP)0.2198Lens 48.925(ASP)0.200Plastic1.68818.7−6.2692.877(ASP)0.10610Lens 53.651(ASP)0.257Plastic1.54455.932.93114.471(ASP)0.37212Lens 68.057(ASP)0.592Plastic1.54456.02.4913−1.588(ASP)0.48214Lens 7−22.412(ASP)0.250Plastic1.54354.1−2.19151.257(ASP)0.50016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.40718ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the image-side surface 552 (Surface 11) is 1.100 mm.An effective radius of the object-side surface 561 (Surface 12) is 1.270 mm.

TABLE 10Aspheric CoefficientsSurface #12346k =−6.8681E+017.4045E+01−1.1357E+01−1.6729E+01−3.1958E+00A4 =1.2862E−013.0059E−011.7127E−012.4618E−016.3216E−02A6 =−8.5759E−02−4.2483E−01−5.2414E−01−1.3140E+00−4.3647E−02A8 =−9.0010E−038.2064E−011.2470E−013.1690E+00−9.4229E−03A10 =7.2104E−02−1.6327E+001.2955E+00−6.6213E+001.1513E−02A12 =−6.6657E−022.3406E+00−3.7282E+001.0090E+015.4376E−02A14 =3.0860E−02−2.1698E+005.0467E+00−1.0008E+013.7503E−02A16 =−7.5155E−031.2166E+00−3.6316E+006.1458E+00−3.0637E−02A18 =8.0322E−04−3.7435E−011.3445E+00−2.1190E+00−6.7882E−02A20 =−1.2514E−054.8554E−02−2.0327E−013.1072E−013.6305E−02Surface #7891011k =−1.1996E+01−9.0000E+011.9530E+00−2.9442E+01−9.0000E+01A4 =2.8878E−028.2529E−026.3938E−02−1.3415E−01−6.6622E−02A6 =−9.2554E−02−4.3178E−01−3.9563E−018.9091E−01−1.7301E−01A8 =6.3422E−024.9482E−011.5056E+00−4.3437E+001.4324E+00A10 =−1.5137E−02−2.8897E−01−5.9975E+001.6025E+01−5.0130E+00A12 =−1.6485E−026.2298E−021.5952E+01−3.8508E+011.0880E+01A14 =2.1950E−027.4650E−02−2.5903E+015.8290E+01−1.4565E+01A16 =3.2680E−022.2762E−022.5085E+01−5.3847E+011.1630E+01A18 =1.8564E−02−1.0920E−02−1.3254E+012.7792E+01−5.0692E+00A20 =−6.0022E−02−1.0845E−012.9037E+00−6.1571E+009.2562E−01Surface #12131415k =−2.2622E+01−1.9292E+008.9999E+01−7.7140E+00A4 =3.4111E−021.2596E−01−3.5299E−01−1.9830E−01A6 =−2.8689E−01−5.6882E−023.7635E−011.8759E−01A8 =1.1812E+00−1.0559E−01−2.9849E−01−1.3784E−01A10 =−3.1612E+003.6041E−011.7315E−017.1271E−02A12 =5.2218E+00−4.7335E−01−6.3174E−02−2.5305E−02A14 =−5.3725E+003.3575E−011.3703E−025.9463E−03A16 =3.3392E+00−1.3334E−01−1.6862E−03−8.6788E−04A18 =−1.1456E+002.7311E−021.0520E−047.0201E−05A20 =1.6579E−01−2.1930E−03−2.3888E−06−2.3807E−06

In the 5th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 5th embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 9 and Table 10 as the following values and satisfy the following conditions:

5th Embodimentf [mm]3.06|f4/|f5|0.19Fno1.93|f6/|f5|0.08HFOV [deg.]52.5|f7/|f5|0.07FOV [deg.]105.0|f7/f1|0.42V240.4|f7/f2|0.07V6/V71.04|f7/f3|0.97CT2/(T12 + T23)0.46|f7/f4|0.35CT2/CT30.41|f7/f5|0.07ΣAT/(T12 + T56)2.42|f7/f6|0.88TL/ImgH1.66|f3/f2|0.07f/R1−0.80|f1/f2|0.17(R11 + R12)/(R11 − R12)0.67|f/f6| + |f/f7|2.63|f1/|f5|0.16Y11/Y720.65|f2/|f5|0.92Y72/f0.77|f3/|f5|0.07——

6th Embodiment

FIG.11is a schematic view of an image capturing unit according to the 6th embodiment of the present disclosure.FIG.12shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 6th embodiment. InFIG.11, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor695. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element610, a second lens element620, an aperture stop600, a third lens element630, a fourth lens element640, a fifth lens element650, a sixth lens element660, a seventh lens element670, an IR-cut filter680and an image surface690. The photographing optical lens assembly includes seven single and non-cemented lens elements (610,620,630,640,650,660and670) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element610with negative refractive power has an object-side surface611being concave in a paraxial region thereof and an image-side surface612being concave in a paraxial region thereof. The first lens element610is made of plastic material and has the object-side surface611and the image-side surface612being both aspheric.

The second lens element620with positive refractive power has an object-side surface621being concave in a paraxial region thereof and an image-side surface622being convex in a paraxial region thereof. The second lens element620is made of plastic material and has the object-side surface621and the image-side surface622being both aspheric.

The third lens element630with positive refractive power has an object-side surface631being convex in a paraxial region thereof and an image-side surface632being convex in a paraxial region thereof. The third lens element630is made of plastic material and has the object-side surface631and the image-side surface632being both aspheric.

The fourth lens element640with negative refractive power has an object-side surface641being convex in a paraxial region thereof and an image-side surface642being concave in a paraxial region thereof. The fourth lens element640is made of plastic material and has the object-side surface641and the image-side surface642being both aspheric.

The fifth lens element650with positive refractive power has an object-side surface651being convex in a paraxial region thereof and an image-side surface652being concave in a paraxial region thereof. The fifth lens element650is made of plastic material and has the object-side surface651and the image-side surface652being both aspheric.

The sixth lens element660with positive refractive power has an object-side surface661being planar in a paraxial region thereof and an image-side surface662being convex in a paraxial region thereof. The sixth lens element660is made of plastic material and has the object-side surface661and the image-side surface662being both aspheric.

The seventh lens element670with negative refractive power has an object-side surface671being convex in a paraxial region thereof and an image-side surface672being concave in a paraxial region thereof. The seventh lens element670is made of plastic material and has the object-side surface671and the image-side surface672being both aspheric. The image-side surface672of the seventh lens element670has at least one critical point in an off-axis region thereof.

The IR-cut filter680is made of glass material and located between the seventh lens element670and the image surface690, and will not affect the focal length of the photographing optical lens assembly. The image sensor695is disposed on or near the image surface690of the photographing optical lens assembly.

The detailed optical data of the 6th embodiment are shown in Table 11 and the aspheric surface data are shown in Table 12 below.

TABLE 116th Embodimentf = 2.59 mm, Fno = 1.62, HFOV = 52.5 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−4.987(ASP)0.200Plastic1.55940.4−4.3524.811(ASP)0.8003Lens 2−168.539(ASP)0.243Plastic1.64222.522.774−13.450(ASP)0.6875Ape. StopPlano−0.3696Lens 31.905(ASP)0.852Plastic1.54456.02.157−2.538(ASP)0.3418Lens 498.094(ASP)0.200Plastic1.67119.5−3.8992.542(ASP)0.12010Lens 52.980(ASP)0.347Plastic1.54456.015.37114.439(ASP)0.50512Lens 6∞(ASP)0.426Plastic1.54456.01.9113−1.038(ASP)0.23414Lens 79.834(ASP)0.250Plastic1.55940.4−1.84150.921(ASP)0.60016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.35718ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the object-side surface 641 (Surface 8) is 1.000 mm.An effective radius of the object-side surface 661 (Surface 12) is 1.400 mm.

TABLE 12Aspheric CoefficientsSurface #12346k =−4.1547E+015.5345E+009.0000E+01−8.5448E+01−5.5398E+00A4 =1.6390E−012.1370E−01−1.2602E−01−1.6075E−014.4110E−02A6 =−1.8396E−01−9.2882E−021.3688E−012.5106E−01−7.5758E−03A8 =1.4270E−01−2.4413E−01−5.0029E−01−8.6338E−013.7818E−02A10 =−7.8204E−026.8136E−011.0284E+002.0413E+00−5.3096E−02A12 =2.9012E−02−8.4602E−01−1.3017E+00−2.9960E+001.4782E−02A14 =−6.7915E−035.9588E−011.0187E+002.7312E+001.9911E−02A16 =8.6990E−04−2.3945E−01−4.7271E−01−1.5012E+00−2.1803E−03A18 =−3.7188E−054.9152E−021.1946E−014.5713E−01−1.4052E−02A20 =−1.7776E−06−3.7126E−03−1.2731E−02−5.9216E−026.3344E−03Surface #7891011k =−1.9885E+00−8.3883E+013.2321E+00−3.1534E+01−7.5508E+01A4 =1.8701E−021.2181E−011.2724E−013.4410E−02−4.4873E−02A6 =−5.1818E−02−3.9314E−01−5.0698E−01−1.8171E−01−2.8717E−01A8 =6.1134E−024.5891E−016.1782E−013.5826E−011.0078E+00A10 =−4.1821E−02−2.7188E−016.8228E−01−1.2665E−01−2.3699E+00A12 =4.2456E−043.3152E−02−4.2317E+00−5.2256E−013.8020E+00A14 =3.3802E−023.7634E−027.5828E+009.5517E−01−3.9075E+00A16 =−1.4127E−03−5.5118E−03−6.9730E+00−7.0999E−012.4415E+00A18 =−3.2063E−02−9.6964E−033.3026E+002.4927E−01−8.2225E−01A20 =1.5837E−025.2138E−03−6.3905E−01−3.5248E−021.1121E−01Surface #12131415k =0.0000E+00−4.3296E+001.6997E+01−5.3548E+00A4 =−1.9997E−021.3232E−01−1.7388E−02−1.0225E−01A6 =2.9946E−013.2964E−02−1.3451E−014.4459E−02A8 =−8.2123E−01−2.3873E−011.6910E−01−1.0942E−02A10 =1.4357E+005.1013E−01−9.1063E−028.7267E−04A12 =−1.7732E+00−5.5666E−012.5360E−023.7111E−04A14 =1.4714E+003.2657E−01−3.1995E−03−1.7302E−04A16 =−7.7538E−01−1.0616E−01−4.3849E−053.7162E−05A18 =2.2982E−011.8133E−025.3778E−05−4.2762E−06A20 =−2.8602E−02−1.2686E−03−3.9517E−062.0282E−07

In the 6th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 6th embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 11 and Table 12 as the following values and satisfy the following conditions:

6th Embodimentf [mm]2.59|f4/|f5|0.25Fno1.62|f6/|f5|0.12HFOV [deg.]52.5|f7/|f5|0.12FOV [deg.]105.0|f7/f1|0.42V222.5|f7/f2|0.08V6/V71.38|f7/f3|0.86CT2/(T12 + T23)0.22|f7/f4|0.47CT2/CT30.29|f7/f5|0.12ΣAT/(T12 + T56)1.78|f7/f6|0.96TL/ImgH1.95|f3/f2|0.09f/R1−0.52|f1/f2|0.19(R11 + R12)/(R11 − R12)1.00|f/f6| + |f/f7|2.76|f1/|f5|0.28Y11/Y720.68|f2/|f5|1.48Y72/f0.94|f3/|f5|0.14——

7th Embodiment

FIG.13is a schematic view of an image capturing unit according to the 7th embodiment of the present disclosure.FIG.14shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 7th embodiment. InFIG.13, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor795. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element710, a second lens element720, an aperture stop700, a third lens element730, a fourth lens element740, a fifth lens element750, a sixth lens element760, a seventh lens element770, an IR-cut filter780and an image surface790. The photographing optical lens assembly includes seven single and non-cemented lens elements (710,720,730,740,750,760and770) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element710with negative refractive power has an object-side surface711being concave in a paraxial region thereof and an image-side surface712being concave in a paraxial region thereof. The first lens element710is made of plastic material and has the object-side surface711and the image-side surface712being both aspheric.

The second lens element720with positive refractive power has an object-side surface721being convex in a paraxial region thereof and an image-side surface722being concave in a paraxial region thereof. The second lens element720is made of plastic material and has the object-side surface721and the image-side surface722being both aspheric.

The third lens element730with positive refractive power has an object-side surface731being convex in a paraxial region thereof and an image-side surface732being convex in a paraxial region thereof. The third lens element730is made of plastic material and has the object-side surface731and the image-side surface732being both aspheric.

The fourth lens element740with negative refractive power has an object-side surface741being convex in a paraxial region thereof and an image-side surface742being concave in a paraxial region thereof. The fourth lens element740is made of plastic material and has the object-side surface741and the image-side surface742being both aspheric.

The fifth lens element750with negative refractive power has an object-side surface751being convex in a paraxial region thereof and an image-side surface752being concave in a paraxial region thereof. The fifth lens element750is made of plastic material and has the object-side surface751and the image-side surface752being both aspheric.

The sixth lens element760with positive refractive power has an object-side surface761being concave in a paraxial region thereof and an image-side surface762being convex in a paraxial region thereof. The sixth lens element760is made of plastic material and has the object-side surface761and the image-side surface762being both aspheric.

The seventh lens element770with negative refractive power has an object-side surface771being convex in a paraxial region thereof and an image-side surface772being concave in a paraxial region thereof. The seventh lens element770is made of plastic material and has the object-side surface771and the image-side surface772being both aspheric. The image-side surface772of the seventh lens element770has at least one critical point in an off-axis region thereof.

The IR-cut filter780is made of glass material and located between the seventh lens element770and the image surface790, and will not affect the focal length of the photographing optical lens assembly. The image sensor795is disposed on or near the image surface790of the photographing optical lens assembly.

The detailed optical data of the 7th embodiment are shown in Table 13 and the aspheric surface data are shown in Table 14 below.

TABLE 137th Embodimentf = 2.58 mm, Fno = 1.75, HFOV = 52.5 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 1−6.787(ASP)0.250Plastic1.55940.4−4.2823.736(ASP)0.7783Lens 28.543(ASP)0.382Plastic1.63923.518.35430.976(ASP)0.8515Ape. StopPlano−0.2816Lens 31.964(ASP)0.707Plastic1.54356.52.237−2.750(ASP)0.3968Lens 420.938(ASP)0.200Plastic1.67119.5−4.7592.754(ASP)0.13510Lens 53.021(ASP)0.288Plastic1.54356.5−82.34112.735(ASP)0.47512Lens 6−4.022(ASP)0.477Plastic1.54356.51.6313−0.756(ASP)0.18514Lens 77.139(ASP)0.278Plastic1.58230.2−1.81150.903(ASP)0.50016IR-cut filterPlano0.210Glass1.51764.2—17Plano0.67018ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the object-side surface 741 (Surface 8) is 1.050 mm.

TABLE 14Aspheric CoefficientsSurface #12346k =−6.8054E+014.5345E+00−6.0692E+009.6912E+00−4.5712E+00A4 =1.4643E−011.6595E−01−1.0085E−01−1.2110E−013.6821E−02A6 =−1.4438E−01−1.2991E−034.8996E−028.4248E−02−2.6662E−02A8 =1.0742E−01−4.2241E−01−1.5049E−01−1.8938E−013.8997E−02A10 =−5.9331E−029.8067E−012.4051E−013.4807E−01−4.4109E−02A12 =2.2586E−02−1.2120E+00−2.3187E−01−3.8774E−011.7611E−02A14 =−5.5307E−038.8862E−011.3565E−012.5757E−011.8106E−02A16 =7.9451E−04−3.8419E−01−4.4992E−02−9.1084E−02−6.8535E−03A18 =−5.5944E−058.9587E−027.7272E−031.2176E−02−1.6123E−02A20 =1.1243E−06−8.6265E−03−5.4058E−047.0121E−041.0188E−02Surface #7891011k =−9.8879E−017.6113E+013.5365E+00−3.1923E+01−2.1927E+01A4 =9.8167E−031.0994E−012.0626E−011.0922E−01−9.3281E−03A6 =−5.5611E−02−4.1590E−01−9.3714E−01−7.5563E−01−2.1461E−01A8 =7.2976E−024.6643E−012.5696E+001.9147E+006.6466E−02A10 =−4.8491E−02−2.5845E−01−5.4146E+00−2.5619E+006.5822E−01A12 =2.1606E−033.3776E−028.0722E+001.7708E+00−1.3925E+00A14 =3.0430E−023.7013E−02−7.9958E+00−1.4414E−011.3910E+00A16 =−4.0016E−03−5.9501E−034.9550E+00−6.8800E−01−7.6204E−01A18 =−2.7838E−02−1.1235E−02−1.7353E+004.5572E−012.2387E−01A20 =1.6019E−024.5891E−032.6178E−01−9.5236E−02−2.8692E−02Surface #12131415k =−8.9997E+01−4.9340E+008.2971E+00−6.8185E+00A4 =−1.9350E−01−2.6849E−011.9188E−012.0656E−02A6 =1.0886E+001.1722E+00−3.9218E−01−9.0751E−02A8 =−2.5664E+00−2.2084E+003.4581E−017.2072E−02A10 =3.7474E+002.5868E+00−1.8788E−01−3.2353E−02A12 =−3.6245E+00−1.8792E+006.7209E−028.9940E−03A14 =2.3452E+008.3154E−01−1.5795E−02−1.5563E−03A16 =−9.8881E−01−2.1587E−012.3348E−031.6101E−04A18 =2.4639E−012.9684E−02−1.9637E−04−9.0083E−06A20 =−2.7486E−02−1.6111E−037.1613E−062.0621E−07

In the 7th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 7th embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 13 and Table 14 as the following values and satisfy the following conditions:

7th Embodimentf [mm]2.58|f4/|f5|0.06Fno1.75|f6/|f5|0.02HFOV [deg.]52.5|f7/|f5|0.02FOV [deg.]105.0|f7/f1|0.42V223.5|f7/f2|0.10V6/V71.87|f7/f3|0.81CT2/(T12 + T23)0.28|f7/f4|0.38CT2/CT30.54|f7/f5|0.02ΣAT/(T12 + T56)2.03|f7/f6|1.11TL/ImgH2.11|f3/f2|0.12f/R1−0.38|f1/f2|0.23(R11 + R12)/(R11 − R12)1.46|f/f6| + |f/f7|3.01|f1/|f5|0.05Y11/Y720.81|f2/|f5|0.22Y72/f0.92|f3/|f5|0.03——

8th Embodiment

FIG.15is a schematic view of an image capturing unit according to the 8th embodiment of the present disclosure.FIG.16shows, in order from left to right, spherical aberration curves, astigmatic field curves and a distortion curve of the image capturing unit according to the 8th embodiment. InFIG.15, the image capturing unit includes the photographing optical lens assembly (its reference numeral is omitted) of the present disclosure and an image sensor895. The photographing optical lens assembly includes, in order from an object side to an image side, a first lens element810, a second lens element820, an aperture stop800, a third lens element830, a fourth lens element840, a fifth lens element850, a sixth lens element860, a seventh lens element870, an IR-cut filter880and an image surface890. The photographing optical lens assembly includes seven single and non-cemented lens elements (810,820,830,840,850,860and870) with no additional lens element disposed between each of the adjacent seven lens elements, wherein there is an air gap between every adjacent lens element.

The first lens element810with negative refractive power has an object-side surface811being convex in a paraxial region thereof and an image-side surface812being concave in a paraxial region thereof. The first lens element810is made of plastic material and has the object-side surface811and the image-side surface812being both aspheric.

The second lens element820with positive refractive power has an object-side surface821being convex in a paraxial region thereof and an image-side surface822being concave in a paraxial region thereof. The second lens element820is made of plastic material and has the object-side surface821and the image-side surface822being both aspheric.

The third lens element830with positive refractive power has an object-side surface831being convex in a paraxial region thereof and an image-side surface832being convex in a paraxial region thereof. The third lens element830is made of plastic material and has the object-side surface831and the image-side surface832being both aspheric.

The fourth lens element840with negative refractive power has an object-side surface841being convex in a paraxial region thereof and an image-side surface842being concave in a paraxial region thereof. The fourth lens element840is made of plastic material and has the object-side surface841and the image-side surface842being both aspheric.

The fifth lens element850with positive refractive power has an object-side surface851being convex in a paraxial region thereof and an image-side surface852being concave in a paraxial region thereof. The fifth lens element850is made of plastic material and has the object-side surface851and the image-side surface852being both aspheric.

The sixth lens element860with positive refractive power has an object-side surface861being concave in a paraxial region thereof and an image-side surface862being convex in a paraxial region thereof. The sixth lens element860is made of plastic material and has the object-side surface861and the image-side surface862being both aspheric.

The seventh lens element870with negative refractive power has an object-side surface871being convex in a paraxial region thereof and an image-side surface872being concave in a paraxial region thereof. The seventh lens element870is made of plastic material and has the object-side surface871and the image-side surface872being both aspheric. The image-side surface872of the seventh lens element870has at least one critical point in an off-axis region thereof.

The IR-cut filter880is made of glass material and located between the seventh lens element870and the image surface890, and will not affect the focal length of the photographing optical lens assembly. The image sensor895is disposed on or near the image surface890of the photographing optical lens assembly.

The detailed optical data of the 8th embodiment are shown in Table 15 and the aspheric surface data are shown in Table 16 below.

TABLE 158th Embodimentf = 2.49 mm, Fno = 1.75, HFOV = 55.5 deg.Surface #Curvature RadiusThicknessMaterialIndexAbbe #Focal Length0ObjectPlanoInfinity1Lens 174.047(ASP)0.250Plastic1.56637.4−4.0822.236(ASP)0.9053Lens 25.500(ASP)0.275Plastic1.66020.416.51410.883(ASP)0.8755Ape. StopPlano−0.2666Lens 32.032(ASP)0.684Plastic1.54456.02.267−2.739(ASP)0.3378Lens 417.563(ASP)0.200Plastic1.68818.7−4.2492.491(ASP)0.08510Lens 52.168(ASP)0.297Plastic1.54456.014.68112.833(ASP)0.68712Lens 6−30.590(ASP)0.578Plastic1.54456.01.4713−0.785(ASP)0.12314Lens 78.684(ASP)0.250Plastic1.57437.1−1.45150.749(ASP)0.60016IR-cut filterPlano0.145Glass1.51764.2—17Plano0.47718ImagePlano—Note:Reference wavelength is 587.6 nm (d-line).An effective radius of the object-side surface 841 (Surface 8) is 1.050 mm.

TABLE 16Aspheric CoefficientsSurface #12346k =−3.2187E+011.2195E+001.2390E+00−8.0468E+01−3.9812E+00A4 =1.2415E−011.4893E−01−5.1575E−02−6.9567E−023.2102E−02A6 =−1.0249E−01−1.1654E−01−1.6683E−01−1.4395E−01−3.1070E−02A8 =5.2246E−022.5350E−015.5417E−016.0153E−014.6532E−02A10 =−1.6084E−02−7.3213E−01−1.2180E+00−1.5119E+00−4.6294E−02A12 =1.7548E−031.2296E+001.6451E+002.3745E+001.4714E−02A14 =6.4109E−04−1.1874E+00−1.3721E+00−2.3266E+001.7977E−02A16 =−2.8752E−046.6172E−016.8446E−011.3838E+00−6.8544E−03A18 =4.5236E−05−1.9848E−01−1.8535E−01−4.5704E−01−1.3070E−02A20 =−2.6624E−062.4700E−022.0865E−026.4638E−029.6697E−03Surface #7891011k =−1.4055E+00−9.0000E+012.6419E+00−1.5484E+01−1.1961E+01A4 =7.7091E−031.1357E−019.2493E−022.3518E−03−1.1766E−01A6 =−5.9502E−02−4.1155E−01−4.7951E−01−1.3776E−011.0823E−01A8 =7.2972E−024.6638E−011.2195E+005.6434E−01−1.6733E−01A10 =−6.4541E−02−2.6185E−01−2.6563E+00−8.5387E−014.0328E−01A12 =4.8411E−023.5931E−024.2081E+005.2322E−01−6.1365E−01A14 =−3.8134E−035.0792E−02−4.4053E+001.6570E−015.7053E−01A16 =2.2218E−04−3.5277E−032.8591E+00−4.7180E−01−3.2174E−01A18 =−3.0881E−02−3.3116E−02−1.0398E+002.8117E−011.0119E−01A20 =2.1708E−021.4266E−021.6121E−01−5.9039E−02−1.3693E−02Surface #12131415k =−9.0000E+01−6.2340E+001.2876E+01−5.6542E+00A4 =−5.3645E−02−8.5137E−021.9012E−012.1612E−02A6 =4.5953E−015.8174E−01−5.1293E−01−1.5930E−01A8 =−1.0707E+00−1.2240E+004.6558E−011.5989E−01A10 =1.3946E+001.4014E+00−2.3510E−01−8.9131E−02A12 =−1.1316E+00−9.4570E−017.0917E−023.1158E−02A14 =5.8994E−013.8813E−01−1.2316E−02−6.9938E−03A16 =−1.9524E−01−9.5609E−021.0399E−039.7875E−04A18 =3.7793E−021.3008E−02−1.3414E−05−7.7576E−05A20 =−3.2999E−03−7.5089E−04−2.4178E−062.6512E−06

In the 8th embodiment, the equation of the aspheric surface profiles of the aforementioned lens elements is the same as the equation of the 1st embodiment. Also, the definitions of these parameters shown in the following table are the same as those stated in the 1st embodiment with corresponding values for the 8th embodiment, so an explanation in this regard will not be provided again.

Moreover, these parameters can be calculated from Table 15 and Table 16 as the following values and satisfy the following conditions:

8th Embodimentf [mm]2.49|f4/|f5|0.29Fno1.75|f6/|f5|0.10HFOV [deg.]55.5|f7/|f5|0.10FOV [deg.]111.0|f7/f1|0.35V220.4|f7/f2|0.09V6/V71.51|f7/f3|0.64CT2/(T12 + T23)0.18|f7/f4|0.34CT2/CT30.40|f7/f5|0.10ΣAT/(T12 + T56)1.72|f7/f6|0.98TL/ImgH2.11|f3/f2|0.14f/R10.03|f1/f2|0.25(R11 + R12)/(R11 − R12)1.05|f/f6| + |f/f7|3.41|f1/|f5|0.28Y11/Y720.79|f2/|f5|1.12Y72/f0.96|f3/|f5|0.15——

9th Embodiment

FIG.17is a perspective view of an image capturing unit according to the 9th embodiment of the present disclosure. In this embodiment, an image capturing unit is a camera module including a lens unit11, a driving device12, an image sensor13and an image stabilizer14. The lens unit11includes the photographing optical lens assembly of the present disclosure, a barrel and a holder member (their reference numerals are omitted) for holding the photographing optical lens assembly. The imaging light converges in the lens unit11of the image capturing unit10to generate an image with the driving device12utilized for image focusing on the image sensor13, and the generated image is then digitally transmitted to other electronic component for further processing.

The driving device12can have auto focusing functionality, and different driving configurations can be obtained through the usages of voice coil motors (VCM), micro electro-mechanical systems (MEMS), piezoelectric systems, or shape memory alloy materials. The driving device12is favorable for obtaining a better imaging position of the lens unit11, so that a clear image of the imaged object can be captured by the lens unit11with different object distances. The image sensor13(for example, CCD or CMOS), which can feature high photosensitivity and low noise, is disposed on the image surface of the photographing optical lens assembly to provide higher image quality.

The image stabilizer14, such as an accelerometer, a gyro sensor and a Hall Effect sensor, is configured to work with the driving device12to provide optical image stabilization (OIS). The driving device12working with the image stabilizer14is favorable for compensating for pan and tilt of the lens unit11to reduce blurring associated with motion during exposure. In some cases, the compensation can be provided by electronic image stabilization (EIS) with image processing software, thereby improving image quality while in motion or low-light conditions.

10th Embodiment

FIG.18is one perspective view of an electronic device according to the 10th embodiment of the present disclosure.FIG.19is another perspective view of the electronic device inFIG.18.FIG.20is a block diagram of the electronic device inFIG.18. In this embodiment, an electronic device20is a smartphone including the image capturing unit10disclosed in the 9th embodiment, an image capturing unit10a, an image capturing unit10b, a flash module21, a focus assist module22, an image signal processor23, a user interface24and an image software processor25. The image capturing unit10, the image capturing unit10aand the image capturing unit10ball face the same direction, and each of the mage capturing units10,10aand10bhas a single focal point. Furthermore, each of the image capturing unit10aand the image capturing unit10bhas a configuration similar to that of the image capturing unit10. In detail, each of the image capturing unit10aand the image capturing unit10bincludes a lens unit, a driving device, an image sensor and an image stabilizer, and the lens unit includes a lens system, a barrel and a holder member for holding the lens system.

In this embodiment, the image capturing unit10is a wide-angle image capturing unit, the image capturing unit10ais a standard image capturing unit, and the image capturing unit10bis a telephoto image capturing unit. The image capturing unit10has a relatively large field of view ranging from 90 to 180 degrees. The image capturing unit10bhas a relatively small field of view ranging from 10 to degrees. The image capturing unit10ahas a field of view ranging between that of the image capturing unit10and the image capturing unit10b, and the field of view of the image capturing unit10amay range from 60 to 90 degrees. Since the image capturing units10,10a,10bhave different fields of view from one another, the electronic device20has various magnification ratios so as to meet the requirement of optical zoom functionality. In this embodiment, the electronic device20includes multiple image capturing units10,10aand10b, but the present disclosure is not limited to the number of image capturing units.

When a user captures images of an object26, the light rays converge in the image capturing unit10, the image capturing unit10aor the image capturing unit10bto generate an image, and the flash module21is activated for light supplement. The focus assist module22detects the object distance of the imaged object26to achieve fast auto focusing. The image signal processor23is configured to optimize the captured image to improve image quality. The light beam emitted from the focus assist module22can be either conventional infrared or laser. The user interface24can be a touch screen or a physical button. The user is able to interact with the user interface24and the image software processor25having multiple functions to capture images and complete image processing. The image processed by the image software processor25can be displayed on the user interface24.

The smartphone in this embodiment is only exemplary for showing the image capturing unit10of the present disclosure installed in an electronic device, and the present disclosure is not limited thereto. The image capturing unit10can be optionally applied to optical systems with a movable focus. Furthermore, the photographing optical lens assembly of the image capturing unit10features good capability in aberration corrections and high image quality, and can be applied to 3D (three-dimensional) image capturing applications, in products such as digital cameras, mobile devices, digital tablets, smart televisions, network surveillance devices, dashboard cameras, vehicle backup cameras, multi-camera devices, image recognition systems, motion sensing input devices, wearable devices and other electronic imaging devices.

The foregoing description, for the purpose of explanation, has been described with reference to specific embodiments. It is to be noted that TABLES 1-16 show different data of the different embodiments; however, the data of the different embodiments are obtained from experiments. The embodiments were chosen and described in order to best explain the principles of the disclosure and its practical applications, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated. The embodiments depicted above and the appended drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.