Patent Publication Number: US-11662596-B2

Title: Imaging lens assembly, camera module and electronic device

Description:
RELATED APPLICATIONS 
     The present application is a continuation of U.S. application Ser. No. 17/153,955, filed Jan. 21, 2021, now U.S. Pat. No. 11,287,662, issued Mar. 29, 2022, which is a continuation of U.S. application Ser. No. 16/708,506, filed Dec. 10, 2019, now U.S. Pat. No. 10,935,801 issued on Mar. 2, 2021, which is a continuation of U.S. application Ser. No. 15/922,037, filed Mar. 15, 2018, now U.S. Pat. No. 10,539,804 issued on Jan. 21, 2020, which claims priority to Taiwan Application Serial Number 106124173, filed Jul. 19, 2017, which are herein incorporated by references. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to an imaging lens assembly and a camera module. More particularly, the present disclosure relates to an imaging lens assembly and a camera module applied to portable electronic devices. 
     Description of Related Art 
     For lens assemblies applied to portable electronic devices, in addition to the lens elements for image formation, the lens assemblies further include optical elements, such as light blocking sheets, spacers and fixing rings, for maintaining a proper optical distance between lens elements or for positioning all of the lens elements within a plastic barrel thereto. However, because of the size relation between the lens elements and the optical elements, it is easy to damage the lens elements and optical elements indirectly by the compression force applied externally during the assembling process of the lens assemblies, so that the lens elements and optical elements cannot recover to the conditions before being forced. 
     For example,  FIG.  8 A  is a schematic view of a conventional imaging lens assembly  80 ,  FIG.  8 B  is a schematic view of a light blocking sheet  81  of the imaging lens assembly  80  of  FIG.  8 A , and  FIG.  8 C  is a schematic view of a spacer  82  of the imaging lens assembly  80  of  FIG.  8 A . As shown in  FIG.  8 A , after the optical elements are sequentially arranged in a barrel  89  of the imaging lens assembly  80 , a fixing ring  83  is disposed on an image side of the imaging lens assembly  80 , and then a compression force is applied to the fixing ring  83  at a position indicated by an arrow A. Since an opening of the fixing ring  83  is larger than the outer diameters of other optical elements, the forcing points of other optical elements are closer to an outer diameter surface in a peripheral region thereof, which is indicated by an arrow B. As shown in  FIG.  8 B , a stressing line  811  is generated after the light blocking sheet  81  being forced, and it is indicated that the light blocking sheet  81  is damaged and cannot recover to the condition before being forced. As shown in  FIG.  8 C , a flexure  821  is generated after the spacer  82  being forced, and it damages not only the flexure  821  itself but also affects other adjacent optical elements to have problems of flexural deformation so as to affect a shape of an optical effective portion thereof, so that the imaging quality of the of the imaging lens assembly  80  will be decreased. Because the spacer  82  is generally made of a PC material which has a hardness being soft (compared to the pencil hardness), it is unrecoverable after flexure formation of the spacer  82 . Furthermore, if the material of the spacer  82  is replaced with a harder material, the manufacturing cost is too high, and the spacer  82  is difficult to form during the injection molding process. 
     Therefore, in conventional imaging lens assemblies, the size problem of the optical elements will directly decrease the manufacturing efficiency and affect the imaging quality, so that it has become an important issue needs to be resolved eagerly in the relative field. 
     SUMMARY 
     The present disclosure provides an imaging lens assembly including a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The first annular surface is formed in the plastic barrel and surrounds the object-side aperture. The imaging lens set is disposed in the plastic barrel and has an optical axis, and the imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element, wherein the object-side connecting surface is closer to the effective optical portion than the second annular surface thereto. Wherein, the first annular surface and the second annular surface are parallel to each other, both of the first annular surface and the second annular surface are perpendicular to the optical axis, and there is without additional one or more optical elements inserted between the first annular surface and the second annular surface. Wherein, the object-side connecting surface is disposed on an object side of the first annular surface, a distance parallel to the optical axis between the object-side connecting surface and the first annular surface is AT1, and the following condition is satisfied:
 
−0.40 mm&lt;AT1&lt;0 mm.
 
     According to another aspect of the present disclosure, a camera module includes the imaging lens assembly according to the aforementioned aspect. 
     According to another aspect of the present disclosure, an electronic device includes the camera module according to the aforementioned aspect and an image sensor disposed on an image surface of the camera module. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present disclosure can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows: 
         FIG.  1 A  is a schematic view of a camera module according to the 1st embodiment of the present disclosure; 
         FIG.  1 B  is a schematic view of an imaging lens set of an imaging lens assembly of the camera module according to the 1st embodiment; 
         FIG.  1 C  is an exploded view of a plastic barrel and a fourth plastic lens element according to the 1st embodiment; 
         FIG.  1 D  is a schematic view of parameters of the 1st embodiment; 
         FIG.  1 E  is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set according to the 1st embodiment; 
         FIG.  2 A  is a schematic view of a camera module according to the 2nd embodiment of the present disclosure; 
         FIG.  2 B  is a schematic view of an imaging lens set of an imaging lens assembly of the camera module according to the 2nd embodiment; 
         FIG.  2 C  is an exploded view of a plastic barrel and a fourth plastic lens element according to the 2nd embodiment; 
         FIG.  2 D  is a schematic view of parameters of the 2nd embodiment; 
         FIG.  2 E  is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set according to the 2nd embodiment; 
         FIG.  3 A  is a schematic view of a camera module according to the 3rd embodiment of the present disclosure; 
         FIG.  3 B  is a schematic view of an imaging lens set of an imaging lens assembly of the camera module according to the 3rd embodiment; 
         FIG.  3 C  is an exploded view of a plastic barrel and a fourth plastic lens element according to the 3rd embodiment; 
         FIG.  3 D  is a schematic view of parameters of the 3rd embodiment; 
         FIG.  3 E  is a schematic view of outer diameters of each plastic lens element of the imaging lens set according to the 3rd embodiment; 
         FIG.  4 A  is a schematic view of a camera module according to the 4th embodiment of the present disclosure; 
         FIG.  4 B  is a schematic view of an imaging lens set of an imaging lens assembly of the camera module according to the 4th embodiment; 
         FIG.  4 C  is an exploded view of a plastic barrel and a fourth plastic lens element according to the 4th embodiment; 
         FIG.  4 D  is a schematic view of parameters of the 4th embodiment; 
         FIG.  4 E  is a schematic view of outer diameters of each plastic lens element of the imaging lens set according to the 4th embodiment; 
         FIG.  5 A  is a schematic view of an electronic device according to the 5th embodiment of the present disclosure; 
         FIG.  5 B  is another schematic view of the electronic device according to the 5th embodiment; 
         FIG.  5 C  is a block diagram of the electronic device according to the 5th embodiment; 
         FIG.  6    is a schematic view of an electronic device according to the 6th embodiment of the present disclosure; 
         FIG.  7    is a schematic view of an electronic device according to the 7th embodiment of the present disclosure; 
         FIG.  8 A  is a schematic view of a conventional imaging lens assembly; 
         FIG.  8 B  is a schematic view of a light blocking sheet of the imaging lens assembly of  FIG.  8 A ; and 
         FIG.  8 C  is a schematic view of a spacer of the imaging lens assembly of  FIG.  8 A . 
     
    
    
     DETAILED DESCRIPTION 
     An imaging lens assembly includes a plastic barrel and an imaging lens set, wherein the imaging lens set is disposed in the plastic barrel and has an optical axis, and the imaging lens set includes a plurality of optical elements. 
     In detail, the plastic barrel includes an object-side aperture and a first annular surface, wherein the first annular surface is formed in the plastic barrel and surrounds the object-side aperture. In particular, “the first annular surface surrounds the object-side aperture” means that the first annular surface surrounds the object-side aperture while looking from an image side of the plastic barrel toward the object-side aperture on an object side thereof, that is, the first annular surface is disposed on an inner surface of the plastic barrel. 
     At least one of the optical elements of the imaging lens set is a plastic lens element. The plastic lens element has an object-side surface and an image-side surface, and includes an effective optical portion, a peripheral portion, a second annular surface and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on the object side of the plastic lens element. The second annular surface and the object-side connecting surface are both disposed on the peripheral portion, and the object-side connecting surface is closer to the effective optical portion than the second annular surface thereto. The first annular surface and the second annular surface are parallel to each other, both of the first annular surface and the second annular surface are perpendicular to the optical axis, and there is without additional one or more optical elements inserted between the first annular surface and the second annular surface. The object-side connecting surface is disposed on an object side of the first annular surface, when a distance parallel to the optical axis between the object-side connecting surface and the first annular surface is AT1 (the first annular surface is defined as a reference surface, and a distance parallel to the optical axis between the object-side connecting surface disposed on an object side of the reference surface and the reference surface is a negative value), the following condition is satisfied: −0.40 mm&lt;AT1&lt;0 mm. Therefore, the appearance of the plastic lens element can be more stereoscopic, which is different from conventional lens elements with flatter appearance, and the supporting intensity of the plastic lens element itself can be reinforced. Moreover, the compression force applied during the assembling process of the imaging lens assembly can be moderated by the arrangement of the first annular surface and the second annular surface so as to reduce the flexural level of the plastic lens element effectively. 
     An air space can be disposed between the first annular surface and the second annular surface. Therefore, the increasing of the assembling tolerance of the imaging lens assembly resulted from the first annular surface leaning on the plastic lens element can be avoided. 
     When a length of the air space between the first annular surface and the second annular surface is d, the following condition can be satisfied: 0.001 mm&lt;d&lt;0.08 mm. Therefore, a smaller space between the plastic lens element and the plastic barrel can be obtained, so that the first annular surface can provide a supporting force to the plastic lens element immediately before the plastic lens element is over-bending so as to protect the plastic lens element. 
     The plastic lens element can further include an image-side connecting surface, and the image-side connecting surface is formed on an image-side surface of the plastic lens element and surrounds the effective optical portion, that is, the image-side connecting surface is disposed on the peripheral portion. The image-side connecting surface is connected with another of the optical elements disposed on the image side of the plastic lens element. When the distance parallel to the optical axis between the object-side connecting surface and the first annular surface is AT1, and a distance parallel to the optical axis between the image-side connecting surface and the first annular surface is AT2 (the first annular surface is defined as the reference surface, and a distance parallel to the optical axis between the image-side connecting surface disposed on an image side of the reference surface and the reference surface is a positive value), the following condition can be satisfied: −0.60&lt;AT1/AT2&lt;0.0. Therefore, the appearance of the plastic lens element can be maintained, and a large height difference between the object-side connecting surface and the image-side connecting surface can be prevented so as to reduce the manufacturing difficulty. 
     Furthermore, when the distance parallel to the optical axis between the object-side connecting surface and the first annular surface is AT1, and the distance parallel to the optical axis between the image-side connecting surface and the first annular surface is AT2, the following condition can be satisfied: 2×|AT1|&lt;AT2. Therefore, the structural intensity of the plastic lens element can be increased. 
     The object-side connecting surface and the image-side connecting surface can be parallel to each other, and both of the object-side connecting surface and the image-side connecting surface can be perpendicular to the optical axis. Therefore, a proper assembling position for other optical elements can be provided. 
     A mucilage material can be applied between the first annular surface and the second annular surface. Therefore, a material which can absorb the compression force can be provided so as to prevent the first annular surface from deformation by force. 
     At least one of the first annular surface and the second annular surface can be an annular stepped surface arranged along a direction perpendicular to the optical axis. Therefore, the moderating efficiency can be further enhanced by the disposition of the annular stepped surface. Furthermore, in addition to the disposition of the annular stepped surface, a mucilage material can be further applied between the first annular surface and the second annular surface. Because an applied range of the mucilage material can be effectively restricted by the annular stepped surface so as to avoid overflowing of the mucilage material, it is favorable for avoiding contaminating of the object-side connecting surface of the plastic lens element by the mucilage material, and therefore the assembling accuracy of the imaging lens assembly can be maintained. 
     When a central thickness of the plastic lens element is CT, and the distance parallel to the optical axis between the image-side connecting surface and the first annular surface is AT2, the following condition can be satisfied: 0.4&lt;AT2/CT&lt;2.0. Therefore, the thickness of the plastic lens element can be well-distributed, and it is favorable for avoiding the thickness of partial region of the plastic lens element being too thin and then affecting the fluency of the injection molding. More preferably, the following condition can be satisfied: 0.5&lt;AT2/CT&lt;1.6. Therefore, the flexural level of the plastic lens element can be further well-distributed so as to prevent the thinnest region of the plastic lens element from over bending. 
     When a length of the first annular surface perpendicular to the optical axis is S1, and a length of the second annular surface perpendicular to the optical axis is S2, the following condition can be satisfied: 70%&lt;(S1/S2)×100%&lt;200%. Therefore, a corresponding region of the first annular surface and the second annular surface is larger, and it is favorable for preventing the partial thickness of the plastic barrel from being too thick and increasing the size of the plastic barrel. 
     Each of the aforementioned features of the imaging lens assembly of the present disclosure can be utilized in numerous combinations, so as to achieve the corresponding functionality. 
     According to another aspect of the present disclosure, a camera module includes the imaging lens assembly according to the aforementioned aspect. In the camera module, the object-side aperture of the imaging lens assembly can be an aperture stop of the imaging lens set. Therefore, enough entry light of the camera module can be assured by the disposition of a front aperture stop, so that the demands for large aperture stop can be satisfied. 
     In the imaging lens set of the camera module, when a number of the plastic lens elements is N, a number of the plastic lens element having an outer diameter ψN1i is N1, and a number of the plastic lens element having an outer diameter ψN2j is N2, the following conditions are satisfied: 5≤N&lt;10; N=N1+N2; 2.8 mm&lt;ψN1i&lt;3.8 mm, wherein i=1, 2, 3 . . . N−1; and 4.7 mm&lt;ψN2j&lt;7.0 mm, wherein j=1, 2 . . . N−N1. Therefore, the outer diameter of a lens elements group having the number N1 of the imaging lens set and the outer diameter of a lens elements group having the number N2 of the imaging lens set can be significantly demarcated from each other, and each of the lens elements groups has a specific range, so that enlarging of the outer diameter of the lens elements group having the number N1 in order to accommodate to a lens elements group having larger outer diameters can be avoided. It is favorable for designing a proper first annular surface and a second annular surface of the plastic barrel and the plastic lens element so as to reduce the space waste and the size of the camera module. 
     According to another aspect of the present disclosure, an electronic device includes the camera module according to the aforementioned aspect and an image sensor, wherein the image sensor is disposed on an image surface of the camera module. Therefore, it is favorable for enhancing the manufacturing efficiency of the electronic device, and the demand for compact size of the electronic device can be achieved. 
     According to the above descriptions, the specific embodiments and reference drawings thereof are given below so as to describe the present disclosure in detail. 
     1st Embodiment 
       FIG.  1 A  is a schematic view of a camera module according to the 1st embodiment of the present disclosure.  FIG.  1 B  is a schematic view of an imaging lens set  120  of an imaging lens assembly  100  of the camera module according to the 1st embodiment. As shown in  FIG.  1 A , the camera module includes, in order from an object side to an image side along an optical axis X, an imaging lens assembly  100 , an IR-cut filter  140  and an image surface  150 , wherein the image surface  150  is disposed on an image side of the imaging lens assembly  100 , and the image sensor  160  is disposed on the image surface  150 . The imaging lens assembly  100  includes a plastic barrel  110  and an imaging lens set  120 , wherein the imaging lens set  120  is disposed in the plastic barrel  110 . 
     In detail, the imaging lens set  120  has the optical axis X and includes a plurality of optical elements, and the optical elements are, in order from the object side to the image side, a first plastic lens element  121 , a second plastic lens element  122 , a stop  126 , a third plastic lens element  123 , a light blocking sheet  127 , a fourth plastic lens element  130 , a spacer  128 , a light blocking sheet  129  and a fifth plastic lens element  125 . 
     The plastic barrel  110  includes an object-side aperture  111  and a first annular surface  112 , wherein the object-side aperture  111  is an aperture stop of the imaging lens set  120 , and the first annular surface  112  is formed in the plastic barrel  110  and surrounds the object-side aperture  111 . 
       FIG.  1 C  is an exploded view of the plastic barrel  110  and the fourth plastic lens element  130  according to the 1st embodiment.  FIG.  1 D  is a schematic view of parameters of the 1st embodiment. The fourth plastic lens element  130  includes an effective optical portion  131 , a peripheral portion  132 , a second annular surface  133 , an object-side connecting surface  134  and an image-side connecting surface  135 . The peripheral portion  132  is formed around the effective optical portion  131 . The second annular surface  133  is formed on an object-side surface of the fourth plastic lens element  130  and surrounds the effective optical portion  131 , that is, the second annular surface  133  is disposed on the peripheral portion  132 . The object-side connecting surface  134  is formed on an object-side surface of the fourth plastic lens element  130  and surrounds the effective optical portion  131 , and the object-side connecting surface  134  is connected with one of the optical elements disposed on an object side of the fourth plastic lens element  130  (that is, the light blocking sheet  127  of the 1st embodiment), wherein the object-side connecting surface  134  is closer to the effective optical portion  131  than the second annular surface  133  thereto. The image-side connecting surface  135  is formed on an image-side surface of the fourth plastic lens element  130  and surrounds the effective optical portion  131 , and the image-side connecting surface  135  is connected with another of the optical elements disposed on an image side of the fourth plastic lens element  130  (that is, the spacer  128  of the 1st embodiment). The first annular surface  112  and the second annular surface  133  are parallel to each other, both of the first annular surface  112  and the second annular surface  133  are perpendicular to the optical axis X, and there is without additional one or more optical elements inserted between the first annular surface  112  and the second annular surface  133 . The object-side connecting surface  134  and the image-side connecting surface  135  are parallel to each other, and both of the object-side connecting surface  134  and the image-side connecting surface  135  are perpendicular to the optical axis X. 
     As shown in  FIG.  1 D , the object-side connecting surface  134  is disposed on an object side of the first annular surface  112 . When a distance parallel to the optical axis X between the object-side connecting surface  134  and the first annular surface  112  is AT1, the following the condition is satisfied: AT1=−0.117 mm. Therefore, the compression force applied during the assembling process of the imaging lens assembly can be supported by the appearance of the fourth plastic lens element  130 , and no additional spacer is needed. 
     An air space is disposed between the first annular surface  112  and the second annular surface  133 . When a length of the air space between the first annular surface  112  and the second annular surface  133  is d, the following condition is satisfied: d=0.028 mm. Therefore, the compressive bending of the fourth plastic lens element  130  during the assembling process can be supported by the first annular surface  112 . 
     When the distance parallel to the optical axis X between the object-side connecting surface  134  and the first annular surface  112  is AT1, and a distance parallel to the optical axis X between the image-side connecting surface  135  and the first annular surface  112  is AT2, the following condition is satisfied: AT1/AT2=−0.247. Furthermore, in the 1st embodiment, when AT1=−0.117 mm, and AT2=0.473 mm, the following condition can be satisfied: 2×|AT1|&lt;AT2. 
     At least one of the first annular surface  112  and the second annular surface  133  is an annular stepped surface arranged along a direction perpendicular to the optical axis X. In particular, as shown in  FIG.  1 C , the first annular surface  112  is an annular stepped surface arranged along the direction perpendicular to the optical axis X in the 1st embodiment. 
     As shown un  FIG.  1 D , when a central thickness of the fourth plastic lens element  130  is CT, and the distance parallel to the optical axis X between the image-side connecting surface  135  and the first annular surface  112  is AT2, the following condition is satisfied: AT2/CT=0.858. 
     A length of the first annular surface  112  perpendicular to the optical axis X is S1 (the aforementioned length is defined as a length perpendicular to the optical axis X of the first annular surface  112  on a cross-section surface of the imaging lens assembly  100 , and the cross-section surface is shown by a cross-section line passing through the optical axis X), and a length of the second annular surface  133  perpendicular to the optical axis X is S2 (the aforementioned length is defined as a length perpendicular to optical axis X of the second annular surface  133  on a cross-section surface of the fourth plastic lens element  130 , and the cross-section surface is shown by a cross-section line passing through the optical axis X). Furthermore, in the 1st embodiment, when S1=0.565 mm, and S2=0.55 mm, the following condition is satisfied: (S1/S2)×100%=102.7%. 
     When a number of the plastic lens elements is N, a number of the plastic lens elements having an outer diameter ψN1i is N1, and a number of plastic lens elements having an outer diameter ψN2j is N2, the following conditions are satisfied: 5≤N&lt;10; N=N1+N2; 2.8 mm&lt;ψN1i&lt;3.8 mm, wherein i=1, 2, 3 . . . N−1; and 4.7 mm&lt;ψN2j&lt;7.0 mm, wherein j=1, 2 . . . N−N1. Please refer to  FIG.  1 E , which is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set  120  according to the 1st embodiment. As shown in  FIG.  1 E , in the 1st embodiment, N=5, N1=3 (those are, the first plastic lens element  121 , the second plastic lens element  122  and the third plastic lens element  123 ), N2=2 (those are, the fourth plastic lens element  130  and the fifth plastic lens element  125 ), and the values of the outer diameters of each of the plastic lens elements are shown below. 
     
       
         
           
               
            
               
                   
               
               
                 1st Embodiment 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 Plastic Lens 
                 121 
                 122 
                 123 
                 130 
                 125 
               
               
                   
                 Element 
                 ψN11 
                 ψN12 
                 ψN13 
                 ψN21 
                 ψN22 
               
               
                   
                   
               
               
                   
                 Outer Diameter 
                 3.4 
                 3.5 
                 3.65 
                 5.3 
                 5.80 
               
               
                   
                 (mm) 
               
               
                   
                   
               
            
           
         
       
     
     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 1 
               
             
            
               
                   
               
               
                 1st embodiment 
               
               
                 f = 3.90 mm, Fno = 2.05, HFOV = 39.3 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                 Abbe 
                 Focal 
               
               
                 # 
                   
                 Curvature radius 
                 Thickness 
                 Material 
                 Index 
                 # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Ape. stop 
                 Plano 
                 −0.351 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.434 
                 ASP 
                 0.627 
                 Plastic 
                 1.545 
                 56.1 
                 3.18 
               
               
                 3 
                   
                 7.017 
                 ASP 
                 0.075 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 11.905 
                 ASP 
                 0.230 
                 Plastic 
                 1.660 
                 20.4 
                 −6.79 
               
               
                 5 
                   
                 3.230 
                 ASP 
                 0.176 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 6 
                 Stop 
                 Plano 
                 0.173 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 3 
                 25.368 
                 ASP 
                 0.334 
                 Plastic 
                 1.566 
                 37.4 
                 39.79 
               
               
                 8 
                   
                 −200.000 
                 ASP 
                 0.504 
                   
                   
                   
                   
               
               
                 9 
                 Lens 4 
                 −6.630 
                 ASP 
                 0.551 
                 Plastic 
                 1.544 
                 56.0 
                 3.08 
               
               
                 10 
                   
                 −1.377 
                 ASP 
                 0.533 
                   
                   
                   
                   
               
               
                 11 
                 Lens 5 
                 −2.599 
                 ASP 
                 0.340 
                 Plastic 
                 1.544 
                 56.0 
                 −2.26 
               
               
                 12 
                   
                 2.444 
                 ASP 
                 0.500 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 13 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.617 
                 64.2 
                 — 
               
               
                 14 
                   
                 Plano 
                 0.227 
                   
                   
                   
                   
               
               
                 15 
                 Image 
                 Plano 
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 is 0.845 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 7 
               
               
                   
               
               
                 k = 
                 −8.7708E−02 
                 −4.2074E+01 
                 7.9293E+00 
                 −7.0051E+00 
                 4.8844E+01 
               
               
                 A4 = 
                 4.2185E−03 
                 −1.6384E−01 
                 −2.6008E−01 
                 −9.3578E−02 
                 −2.2593E−01 
               
               
                 A6 = 
                 −1.0722E−02 
                 2.8299E−01 
                 6.6482E−01 
                 4.6345E−01 
                 −7.7557E−02 
               
               
                 A8 = 
                 1.0134E−01 
                 −2.0133E−01 
                 −6.7146E−01 
                 −4.0513E−01 
                 3.1320E−01 
               
               
                 A10 = 
                 −2.8109E−01 
                 −4.0737E−03 
                 3.0151E−01 
                 1.1650E−01 
                 −6.2329E−01 
               
               
                 A12 = 
                 3.3367E−01 
                 7.7646E−03 
                 −4.2762E−02 
                 1.0293E−01 
                 3.7296E−01 
               
               
                 A14 = 
                 −1.5900E−01 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
               
               
                   
               
               
                 k = 
                 −9.9000E+01 
                 −1.8680E+01 
                 −6.8670E+00 
                 −5.0992E+00 
                 −1.7750E+01 
               
               
                 A4 = 
                 −1.9162E−01 
                 −5.7622E−02 
                 −1.9899E−01 
                 −1.0250E−01 
                 −7.4010E−02 
               
               
                 A6 = 
                 4.9255E−02 
                 −1.3742E−02 
                 2.8722E−01 
                 6.5106E−02 
                 3.3794E−02 
               
               
                 A8 = 
                 −2.6034E−01 
                 5.1328E−03 
                 −2.6995E−01 
                 −2.1488E−02 
                 −1.1982E−02 
               
               
                 A10 = 
                 4.9982E−01 
                 −3.1514E−02 
                 1.8174E−01 
                 4.9743E−03 
                 2.6579E−03 
               
               
                 A12 = 
                 −5.0712E−01 
                 2.7153E−02 
                 −6.9834E−02 
                 −7.6675E−04 
                 −3.7350E−04 
               
               
                 A14 = 
                 2.1081E−01 
                 −5.7782E−03 
                 1.3950E−02 
                 6.7745E−05 
                 3.0931E−05 
               
               
                 A16 = 
                   
                   
                 −1.1346E−03 
                 −2.5483E−06 
                 −1.1185E−06 
               
               
                   
               
            
           
         
       
     
     Table 1 is detailed optical data of the imaging lens set  120 , the IR-cut filter  140  and the image surface  150  of  FIG.  1    according to the 1st embodiment, wherein the curvature radius, the thickness and the focal length are shown in millimeters (mm), and surface number 0-15 represented the surfaces sequentially arranged from the object side to the image side. Moreover, f represent a focal length of the imaging lens assembly, Fno represents an f-number of the imaging lens assembly, and HFOV represents half of a maximum field of view of the imaging lens assembly according to the 1st embodiment. Table 2 is the aspheric surface data of the 1st embodiment, wherein k represents the conic coefficient of the equation of the aspheric surface profiles, and A4-A16 represent the aspheric coefficients of each of the surfaces from the 4th order to the 16th order. The equation of the aspheric surface profiles of the aforementioned lens elements of the 1st embodiment is expressed as follows: 
                 X   ⁡     (   Y   )       =         (       Y   2     /   R     )     /     (     1   +     sqrt   ⁡     (     1   -       (     1   +   k     )     ×       (     Y   /   R     )     2         )         )       +       ∑   i     ⁢       (   Ai   )     ×     (     Y   ′     )             ;         
wherein,
 
     X is the relative distance between a point on the aspheric surface spaced at a distance Y from the 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; and 
     Ai is the i-th aspheric coefficient. 
     2nd Embodiment 
       FIG.  2 A  is a schematic view of a camera module according to the 2nd embodiment of the present disclosure.  FIG.  2 B  is a schematic view of an imaging lens set  220  of an imaging lens assembly  200  of the camera module according to the 2nd embodiment. As shown in  FIG.  2 A , the camera module includes, in order from an object side to an image side along an optical axis X, an imaging lens assembly  200 , an IR-cut filter  240  and an image surface  250 , wherein the image surface  250  is disposed on an image side of the imaging lens assembly  200 , and the image sensor  260  is disposed on the image surface  250 . The imaging lens assembly  200  includes a plastic barrel  210  and an imaging lens set  220 , wherein the imaging lens set  220  is disposed in the plastic barrel  210 . 
     As shown in  FIG.  2 B , the imaging lens set  220  has the optical axis X and includes a plurality of optical elements, and the optical elements are, in order from the object side to the image side, a first plastic lens element  221 , a second plastic lens element  222 , a stop  226 , a third plastic lens element  223 , a light blocking sheet  227 , a fourth plastic lens element  230 , a spacer  228 , a light blocking sheet  229  and a fifth plastic lens element  225 . 
     The plastic barrel  210  includes an object-side aperture  211  and a first annular surface  212 , wherein the object-side aperture  211  is an aperture stop of the imaging lens set  220 , and the first annular surface  112  is formed in the plastic barrel  210  and surrounds the object-side aperture  211 . 
       FIG.  2 C  is an exploded view of the plastic barrel  210  and the fourth plastic lens element  230  according to the 2nd embodiment.  FIG.  2 D  is a schematic view of parameters of the 2nd embodiment. The fourth plastic lens element  230  includes an effective optical portion  231 , a peripheral portion  232 , a second annular surface  233 , an object-side connecting surface  234  and an image-side connecting surface  235 . The peripheral portion  232  is formed around the effective optical portion  231 . The second annular surface  233  is formed on an object-side surface of the fourth plastic lens element  230  and surrounds the effective optical portion  231 , that is, the second annular surface  233  is disposed on the peripheral portion  232 . The object-side connecting surface  234  is formed on an object-side surface of the fourth plastic lens element  230  and surrounds the effective optical portion  231 , and the object-side connecting surface  234  is connected with one of the optical elements disposed on an object side of the fourth plastic lens element  230  (that is, the light blocking sheet  227  of the 2nd embodiment), wherein the object-side connecting surface  234  is closer to the effective optical portion  231  than the second annular surface  233  thereto. The image-side connecting surface  235  is formed on an image-side surface of the fourth plastic lens element  230  and surrounds the effective optical portion  231 , and the image-side connecting surface  235  is connected with another of the optical elements disposed on an image side of the fourth plastic lens element  230  (that is, spacer  228  of the 2nd embodiment). The first annular surface  212  and the second annular surface  233  are parallel to each other, both of the first annular surface  212  and the second annular surface  233  are perpendicular to the optical axis X, and there is without additional one or more optical elements inserted between the first annular surface  212  and the second annular surface  233 . The object-side connecting surface  234  and the image-side connecting surface  235  are parallel to each other, and both of the object-side connecting surface  234  and the image-side connecting surface  235  are perpendicular to the optical axis X. 
     At least one of the first annular surface  212  and the second annular surface  233  is an annular stepped surface arranged along a direction perpendicular to the optical axis X. In particular, as shown in  FIG.  2 C , the second annular surface  233  is an annular stepped surface arranged along the direction perpendicular to the optical axis X in the 2nd embodiment. 
     Please refer to  FIG.  2 C  and  FIG.  2 D , the parameters shown below and the definitions thereof are the same as the 1st embodiment, and an explanation in this regard will not be provided again. 
     
       
         
           
               
             
               
                   
               
               
                 2nd embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 AT1 (mm) 
                 −0.162 
                 CT (mm) 
                  0.558 
               
               
                   
                 AT2 (mm) 
                  0.428 
                 S1 (mm) 
                  0.396 
               
               
                   
                 AT1/AT2 
                 −0.379 
                 S2 (mm) 
                  0.443 
               
               
                   
                 d (mm) 
                  0.028 
                 (S1/S2) × 100% 
                 89.4% 
               
               
                   
                   
               
            
           
         
       
     
     When a number of the plastic lens elements is N, a number of the plastic lens elements having an outer diameter ψN1i is N1, and a number of the plastic lens element having an outer diameter ψN2j is N2, the following conditions are satisfied: 5≤N&lt;10; N=N1+N2; 2.8 mm&lt;ψN1i&lt;3.8 mm, wherein i=1, 2, 3 . . . N−1; and 4.7 mm&lt;ψN2j&lt;7.0 mm, wherein j=1, 2 . . . N−N1. Please refer to  FIG.  2 E , which is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set  220  according to the 2nd embodiment. As shown in  FIG.  2 E , in the 2nd embodiment, N=5, N1=3 (those are, the first plastic lens element  221 , the second plastic lens element  222  and the third plastic lens element  223 ), N2=2 (those are, the fourth plastic lens element  230  and the fifth plastic lens element  225 ), and values of the outer diameters of each of the plastic lens elements are shown below. 
     
       
         
           
               
            
               
                   
               
               
                 2nd embodiment 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 Plastic Lens 
                 221 
                 122 
                 223 
                 230 
                 225 
               
               
                   
                 Element 
                 ψN11 
                 ψN12 
                 ψN13 
                 ψN21 
                 ψN22 
               
               
                   
                   
               
               
                   
                 Outer Diameter 
                 3.4 
                 3.5 
                 3.65 
                 5.3 
                 5.95 
               
               
                   
                 (mm) 
               
               
                   
                   
               
            
           
         
       
     
     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 3 
               
             
            
               
                   
               
               
                 2nd embodiment 
               
               
                 f = 3.87 mm, Fno = 2.05, HFOV = 39.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                 Focal 
               
               
                 # 
                   
                 Curvature radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Ape. stop 
                 Plano 
                 −0.339 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.434 
                 ASP 
                 0.627 
                 Plastic 
                 1.545 
                 56.0 
                 3.18 
               
               
                 3 
                   
                 7.017 
                 ASP 
                 0.075 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 11.905 
                 ASP 
                 0.230 
                 Plastic 
                 1.660 
                 20.4 
                 −6.79 
               
               
                 5 
                   
                 3.230 
                 ASP 
                 0.176 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 6 
                 Stop 
                 Plano 
                 0.173 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 3 
                 25.368 
                 ASP 
                 0.334 
                 Plastic 
                 1.566 
                 37.4 
                 39.79 
               
               
                 8 
                   
                 −200.000 
                 ASP 
                 0.501 
                   
                   
                   
                   
               
               
                 9 
                 Lens 4 
                 −7.132 
                 ASP 
                 0.558 
                 Plastic 
                 1.544 
                 56.0 
                 2.93 
               
               
                 10 
                   
                 −1.340 
                 ASP 
                 0.479 
                   
                   
                   
                   
               
               
                 11 
                 Lens 5 
                 −3.147 
                 ASP 
                 0.344 
                 Plastic 
                 1.534 
                 55.9 
                 −2.20 
               
               
                 12 
                   
                 1.949 
                 ASP 
                 0.400 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 13 
                 IR-cut filter 
                 Plano 
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 14 
                   
                 Plano 
                 0.301 
                   
                   
                   
                   
               
               
                 15 
                 Image 
                 Plano 
                 — 
                   
                   
                   
                   
               
               
                   
                 surface 
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 is 0.845 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 4 
               
               
                   
               
               
                 Aspheric Coeffcients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 7 
               
               
                   
               
               
                 k = 
                 −8.7708E−02 
                 −4.2074E+01 
                 7.9293E+00 
                 −7.0051E+00 
                 4.8844E+01 
               
               
                 A4 = 
                 4.2185E−03 
                 −1.6384E−01 
                 −2.6008E−01 
                 −9.3578E−02 
                 −2.2593E−01 
               
               
                 A6 = 
                 −1.0722E−02 
                 2.8299E−01 
                 6.6482E−01 
                 4.6345E−01 
                 −7.7557E−02 
               
               
                 A8 = 
                 1.0134E−01 
                 −2.0133E−01 
                 −6.7146E−01 
                 −4.0513E−01 
                 3.1320E−01 
               
               
                 A10 = 
                 −2.8109E−01 
                 −4.0737E−03 
                 3.0151E−01 
                 1.1650E−01 
                 −6.2329E−01 
               
               
                 A12 = 
                 3.3367E−01 
                 7.7646E−03 
                 −4.2762E−02 
                 1.0293E−01 
                 3.7296E−01 
               
               
                 A14 = 
                 −1.5900E−01 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 19 
               
               
                   
               
               
                 k = 
                 −9.9000E+01 
                 5.0073E+00 
                 −7.5305E+00 
                 −1.0912E+00 
                 −1.4157E+01 
               
               
                 A4 = 
                 −1.9162E−01 
                 4.5721E−02 
                 −2.3159E−01 
                 −1.2042E−01 
                 −8.0120E−02 
               
               
                 A6 = 
                 4.9255E−02 
                 −3.8277E−02 
                 3.1239E−01 
                 8.9331E−02 
                 3.6782E−02 
               
               
                 A8 = 
                 −2.6034E−01 
                 2.9436E−02 
                 −3.2820E−01 
                 −2.9881E−02 
                 −1.2075E−02 
               
               
                 A10 = 
                 4.9982E−01 
                 −4.8924E−02 
                 2.2435E−01 
                 6.3476E−03 
                 2.3735E−03 
               
               
                 A12 = 
                 −5.0712E−01 
                 3.4284E−02 
                 −8.6701E−02 
                 −8.6531E−04 
                 −2.7878E−04 
               
               
                 A14 = 
                 2.1081E−01 
                 −6.8793E−03 
                 1.7380E−02 
                 8.8309E−05 
                 1.8892E−05 
               
               
                 A16 = 
                   
                   
                 −1.4194E−03 
                 −2.3534E−06 
                 −5.7559E−07 
               
               
                   
               
            
           
         
       
     
     In the 2nd embodiment, the equation of the aspheric surface profiles is the same as the equation of the 1st embodiment, so an explanation in this regard will not be provided again. 
     3rd Embodiment 
       FIG.  3 A  is a schematic view of a camera module according to the 3rd embodiment of the present disclosure.  FIG.  3 B  is a schematic view of an imaging lens set  320  of an imaging lens assembly  300  of the camera module according to the 3rd embodiment. As shown in  FIG.  3 A , the camera module includes, in order from an object side to an image side along an optical axis X, an imaging lens assembly  300 , an IR-cut filter  340  and an image surface  350 , wherein the image surface  350  is disposed on an image side of the imaging lens assembly  300 , and the image sensor  360  is disposed on the image surface  350 . The imaging lens assembly  300  includes a plastic barrel  310  and an imaging lens set  320 , wherein the imaging lens set  320  is disposed in the plastic barrel  310 . 
     As shown in  FIG.  3 B , the imaging lens set  320  has the optical axis X and includes a plurality of optical elements, and the optical elements are, in order from the object side to the image side, a first plastic lens element  321 , a light blocking sheet  326 , a second plastic lens element  322 , a stop  327 , a third plastic lens element  323 , a light blocking sheet  328 , a fourth plastic lens element  330 , a spacer  329  and a fifth plastic lens element  325 . 
     The plastic barrel  310  includes an object-side aperture  311  and a first annular surface  312 , wherein the object-side aperture  311  is an aperture stop of the imaging lens set  320 , and the first annular surface  312  is formed in the plastic barrel  310  and surrounds the object-side aperture  311 . 
       FIG.  3 C  is an exploded view of the plastic barrel  310  and the fourth plastic lens element  330  according to the 3rd embodiment.  FIG.  3 D  is a schematic view of parameters of the 3rd embodiment. The fourth plastic lens element  330  includes an effective optical portion  331 , a peripheral portion  332 , a second annular surface  333 , an object-side connecting surface  334  and an image-side connecting surface  335 . The peripheral portion  332  is formed around the effective optical portion  331 . The second annular surface  333  is formed on an object-side surface of the fourth plastic lens element  330  and surrounds the effective optical portion  331 , that is, the second annular surface  333  is disposed on the peripheral portion  332 . The object-side connecting surface  334  is formed on an object-side surface of the fourth plastic lens element  330  and surrounds the effective optical portion  331 , and the object-side connecting surface  334  is connected with one of the optical elements disposed on an object side of the fourth plastic lens element  330  (that is, the light blocking sheet  328  of the 3rd embodiment), wherein the object-side connecting surface  334  is closer to the effective optical portion  331  than the second annular surface  333  thereto. The image-side connecting surface  335  is formed on an image-side surface of the fourth plastic lens element  330  and surrounds the effective optical portion  331 , and the image-side connecting surface  335  is connected with another of the optical elements disposed on an image side of the fourth plastic lens element  330  (that is, the light blocking sheet  329  of the 3rd embodiment). The first annular surface  312  and the second annular surface  333  are parallel to each other, both of the first annular surface  312  and the second annular surface  333  are perpendicular to the optical axis X, and there is without additional one or more optical elements inserted between the first annular surface  312  and the second annular surface  333 . The object-side connecting surface  334  and the image-side connecting surface  335  are parallel to each other, and both of the object-side connecting surface  334  and the image-side connecting surface  335  are perpendicular to the optical axis X. 
     At least one of the first annular surface  312  and the second annular surface  333  is an annular stepped surface arranged along a direction perpendicular to the optical axis X. In particular, as shown in  FIG.  3 C , the first annular surface  312  is an annular stepped surface arranged along the direction perpendicular to the optical axis X in the 3rd embodiment. 
     Furthermore, please refer to the  FIG.  3 C  and  FIG.  3 D , a mucilage material  336  is applied between the first annular surface  312  and the second annular surface  333 . In detail, the mucilage material  336  can be applied on one of the first annular surface  312  and the second annular surface  333  in advance. When the first annular surface  312  and the second annular surface  333  becomes closer to each other during the assembling process, the compression force between two of the surfaces can be absorbed so as to protect an optical effective portion of the plastic lens element from affecting by external forces. After the mucilage material  336  is cured, the mucilage material  336  can be used to fix spaces between the adjacent plastic lens elements and served as a compression absorption material. 
     Please refer to  FIG.  3 C  and  FIG.  3 D , the parameters shown below and the definitions thereof are the same as the 1st embodiment, and an explanation in this regard will not be provided again. 
     
       
         
           
               
             
               
                   
               
               
                 3rd embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 AT1 (ma)) 
                 −0.084 
                 CT (mm) 
                  0.567 
               
               
                   
                 AT2 (mm) 
                  0.57 
                 S1 (mm) 
                  0.503 
               
               
                   
                 AT1/AT2 
                 −0.147 
                 S2 (mm) 
                  0.38 
               
               
                   
                 d (mm) 
                  0.05 
                 (S1/S2) × 100% 
                 132.3% 
               
               
                   
                   
               
            
           
         
       
     
     When a number of the plastic lens elements is N, a number of the plastic lens elements having an outer diameter ψN1i is N1, and a number of plastic lens elements having an outer diameter ψN2j is N2, the following conditions are satisfied: 5≤N&lt;10; N=N1+N2; 2.8 mm&lt;ψN1i&lt;3.8 mm, wherein i=1, 2, 3 . . . N−1; and 4.7 mm&lt;ψN2j&lt;7.0 mm, wherein j=1, 2 . . . N−N1. Please refer to  FIG.  3 E , which is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set  320  according to the 3rd embodiment. As shown in  FIG.  3 E , in the 3rd embodiment, N=5, N1=3 (those are, the first plastic lens element  321 , the second plastic lens element  322  and the third plastic lens element  323 ), N2=2 (those are, the fourth plastic lens element  330  and the fifth plastic lens element  325 ), and values of the outer diameters of each of the plastic lens elements are shown below. 
     
       
         
           
               
            
               
                   
               
               
                 3rd embodiment 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 Plastic Lens 
                 321 
                 322 
                 323 
                 330 
                 325 
               
               
                   
                 Element 
                 ψN11 
                 ψN112 
                 ψN13 
                 ψN21 
                 ψN22 
               
               
                   
                   
               
               
                   
                 Outer Diameter 
                 3.1 
                 3.2 
                 3.3 
                 4.76 
                 5.06 
               
               
                   
                 (mm) 
               
               
                   
                   
               
            
           
         
       
     
     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 5 
               
             
            
               
                   
               
               
                 3rd embodiment 
               
               
                 f = 3.62 mm, Fno = 1.89, HFOV = 38.5 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                   
                 Focal 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 # 
                   
                 Curvature radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Ape. stop 
                 Plano 
                 −0.334 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.414 
                 ASP 
                 0.589 
                 Plastic 
                 1.545  
                 56.0 
                 3.31 
               
               
                 3 
                   
                 5.584 
                 ASP 
                 0.060 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 6.584 
                 ASP 
                 0.239 
                 Plastic 
                 1.669 
                 19.5 
                 −8.91 
               
               
                 5 
                   
                 3.032 
                 ASP 
                 0.188 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 6 
                 Stop 
                 Plano 
                 0.145 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 3 
                 61.926 
                 ASP 
                 0.510 
                 Plastic; 
                 1.544 
                 56.0 
                 44.63 
               
               
                 8 
                   
                 −39.832 
                 ASP 
                 0.364 
                   
                   
                   
                   
               
               
                 9 
                 Lens 4 
                 −17.354 
                 ASP 
                 0.567 
                 Plastic 
                 1.544 
                 56.0 
                 2.18 
               
               
                 10 
                   
                 −1.122 
                 ASP 
                 0.244 
                   
                   
                   
                   
               
               
                 11 
                 Lens 5 
                 −3.377 
                 ASP 
                 0.356 
                 Plastic 
                 1.534 
                 55.9 
                 −1.73 
               
               
                 12 
                   
                 1.320 
                 ASP 
                 0.500 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 13 
                 IR-cut filter 
                 Plano 
                 0.210 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 14 
                   
                 Plano 
                 0.361 
                   
                   
                   
                   
               
               
                 15 
                 Image 
                 Plano 
                 — 
                   
                   
                   
                   
               
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 is 0.840 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 6 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 7 
               
               
                   
               
               
                 k = 
                 −1.0434E+00 
                 −6.9124E+00 
                 7.4219E+00 
                 7.0785E+00 
                 −9.0000E+01 
               
               
                 A4 = 
                 3.2168E−02 
                 −2.6820E−01 
                 −3.4563E−01 
                 −1.5500E−01 
                 −1.5221E−01 
               
               
                 A6 = 
                 5.2179E−02 
                 4.1018E−01 
                 7.8306E−01 
                 3.9240E−01 
                 −5.0688E−01 
               
               
                 A8 = 
                 −7.2934E−02 
                 −1.0431E−01 
                 −5.0180E−01 
                 5.3438E−02 
                 2.8895E+00 
               
               
                 A10 = 
                 −2.3907E−02 
                 −5.4115E−01 
                 −4.1632E−01 
                 −9.9651E−01 
                 −9.1924E+00 
               
               
                 A12 = 
                 1.4817E−01 
                 6.6947E−01 
                 7.8159E−01 
                 1.2820E+00 
                 1.6351E+01 
               
               
                 A14 = 
                 −1.2662E−01 
                 −1.9199E−01 
                 −3.1169E−01 
                 −4.2827E−01 
                 −1.5687E+01 
               
               
                 A16 = 
                   
                   
                   
                   
                 6.3082E+00 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
               
               
                   
               
               
                 k = 
                 −7.9774E+01 
                 3.0077E+01 
                 −9.7347E−01 
                 2.6127E−01 
                 −8.3924E+00 
               
               
                 A4 = 
                 −1.2398E−01 
                 1.0375E−03  
                 3.1597E−01 
                 −8.9884E−02 
                 −1.4758E−01 
               
               
                 A6 = 
                 −2.3195E−01 
                 8.7018E−03 
                 −3.7353E−01 
                 −1.2952E−01 
                 8.3479E−02 
               
               
                 A8 = 
                 6.6284E−01 
                 −3.4047E−01 
                 2.8623E−01 
                 2.0238E−01 
                 −3.4417E−02 
               
               
                 A10 = 
                 −1.4024E+00 
                 5.9214E−01 
                 −1.1987E−01 
                 −1.0233E−01 
                 9.4688E−03 
               
               
                 A12 = 
                 1.7221E+00 
                 −5.3338E−01 
                 2.8612E−02 
                 2.6044E−02 
                 −1.6961E−03 
               
               
                 A14 = 
                 −1.1492E+00 
                 2.3979E−01 
                 −3.8053E−03 
                 −3.4084E−03 
                 1.7810E−04 
               
               
                 A16 = 
                 3.2541E−01 
                 −4.1504E−02 
                 2.1493E−04 
                 1.8348E−04 
                 −8.0743E−06 
               
               
                   
               
            
           
         
       
     
     In the 3rd embodiment, the equation of the aspheric surface profiles is the same as the equation of the 1st embodiment, so an explanation in this regard will not be provided again. 
     4th Embodiment 
       FIG.  4 A  is a schematic view of a camera module according to the 4th embodiment of the present disclosure.  FIG.  4 B  is a schematic view of an imaging lens set  420  of an imaging lens assembly  400  of the camera module according to the 4th embodiment. As shown in  FIG.  4 A , the camera module includes, in order from an object side to an image side along an optical axis X, an imaging lens assembly  400 , an IR-cut filter  440  and an image surface  450 , wherein the image surface  450  is disposed on an image side of the imaging lens assembly  400 , and the image sensor  460  is disposed on the image surface  450 . The imaging lens assembly  400  includes a plastic barrel  410  and an imaging lens set  420 , wherein the imaging lens set  420  is disposed in the plastic barrel  410 . 
     As shown in  FIG.  4 B , the imaging lens set  420  has the optical axis X and includes a plurality of optical elements, and the optical elements are, in order from the object side to the image side, a first plastic lens element  421 , a light blocking sheet  426 , a second plastic lens element  422 , a stop  427 , a third plastic lens element  423 , a light blocking sheet  428 , a spacer  429 , a fourth plastic lens element  430 , a light blocking sheet  424  and a fifth plastic lens element  425 . 
     The plastic barrel  410  includes an object-side aperture  411  and a first annular surface  412 , wherein the object-side aperture  411  is an aperture stop of the imaging lens set  420 , and the first annular surface  412  is formed in the plastic barrel  410  and surrounds the object-side aperture  411 . 
       FIG.  4 C  is an exploded view of the plastic barrel  410  and the fourth plastic lens element  430  according to the 4th embodiment.  FIG.  4 D  is a schematic view of parameters of the 4th embodiment. The fourth plastic lens element  430  includes an effective optical portion  431 , a peripheral portion  432 , a second annular surface  433 , an object-side connecting surface  434  and an image-side connecting surface  435 . The peripheral portion  432  is formed around the effective optical portion  431 . The second annular surface  433  is formed on an object-side surface of the fourth plastic lens element  430  and surrounds the effective optical portion  431 , that is, the second annular surface  433  is disposed on the peripheral portion  432 . The object-side connecting surface  434  is formed on an object-side surface of the fourth plastic lens element  430  and surrounds the effective optical portion  431 , and the object-side connecting surface  434  is connected with one of the optical elements disposed on an object side of the fourth plastic lens element  430  (that is, the spacer  429  of the 4th embodiment), wherein the object-side connecting surface  434  is closer to the effective optical portion  431  than the second annular surface  433  thereto. The image-side connecting surface  435  is formed on an image-side surface of the fourth plastic lens element  430  and surrounds the effective optical portion  431 , and the image-side connecting surface  435  is connected with another of the optical elements disposed on an image side of the fourth plastic lens element  430  (that is, the light blocking sheet  424  of the 4th embodiment). The first annular surface  412  and the second annular surface  433  are parallel to each other, both of the first annular surface  412  and the second annular surface  433  are perpendicular to the optical axis X, and there is without additional one or more optical elements inserted between the first annular surface  412  and the second annular surface  433 . The object-side connecting surface  434  and the image-side connecting surface  435  are parallel to each other, and both of the object-side connecting surface  434  and the image-side connecting surface  435  are perpendicular to the optical axis X. 
     At least one of the first annular surface  412  and the second annular surface  433  is an annular stepped surface arranged along a direction perpendicular to the optical axis X. In particular, as shown in  FIG.  4 C , the first annular surface  412  is an annular stepped surface arranged along the direction perpendicular to the optical axis X in the 4th embodiment. 
     Furthermore, please refer to the  FIG.  4 C  and  FIG.  4 D , a mucilage material  436  is applied between the first annular surface  412  and the second annular surface  433 . In detail, the mucilage material  436  can be applied on one of the first annular surface  412  and the second annular surface  433  in advance. When the first annular surface  412  and the second annular surface  433  is closing to each other during the assembling process, the compression force between two of the surfaces can be absorbed so as to protect an optical effective portion of the plastic lens element from affecting by external forces. After the mucilage material  436  is cured, the mucilage material  436  can be used to fix spaces between the adjacent plastic lens elements and served as a compression absorption material. 
     Please refer to  FIG.  4 C  and  FIG.  4 D , the parameters shown below and the definitions thereof are the same as the 1st embodiment, and an explanation in this regard will not be provided again. Furthermore, in the 4th embodiment, a length of the second annular surface  433  perpendicular to the optical axis X is S2, and the length S2 includes S21 and S22 from the effective optical portion  431  toward the peripheral portion  432 , wherein S2=S21+S22. Two air spaces are disposed between the first annular surface  412  and the second annular surface  433  corresponding, and two lengths of the two air spaces disposed between the first annular surface  412  and the second annular surface  433  being from the peripheral portion  432  toward the effective optical portion  431  are d1 and d2, respectively. 
     
       
         
           
               
             
               
                   
               
               
                 4th embodiment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 AT1 (mm) 
                 −0.037 
                 CT (mm) 
                  0.663 
               
               
                   
                 AT2 (mm) 
                  0.573 
                 S1 (mm) 
                  0.701 
               
               
                   
                 AT1/AT2 
                 −0.065 
                 S21 (mm) 
                  0.171 
               
               
                   
                   
                   
                 S22 (mm) 
                  0.285 
               
               
                   
                 d1 (mm) 
                  0.02 
                 (S1/S2) × 100% 
                 153.7% 
               
               
                   
                 d2 (mm) 
                  0.05 
               
               
                   
                   
               
            
           
         
       
     
     When a number of the plastic lens elements is N, a number of the plastic lens elements having an outer diameter ψN1i is N1, and a number of plastic lens elements having an outer diameter ψN2j is N2, the following conditions are satisfied: 5≤N&lt;10; N=N1+N2; 2.8 mm&lt;ψN1i&lt;3.8 mm, wherein i=1, 2, 3 . . . N−1; and 4.7 mm&lt;ψN2j&lt;7.0 mm, wherein j=1, 2 . . . N−N1. Please refer to  FIG.  3 E , which is a schematic view of outer diameters of each of the plastic lens elements of the imaging lens set  420  according to the 4th embodiment. As shown in  FIG.  4 E , in the 4th embodiment, N=5, N1=3 (those are, the first plastic lens element  421 , the second plastic lens element  422  and the third plastic lens element  423 ), N2=2 (those are, the fourth plastic lens element  430  and the fifth plastic lens element  425 ), and values of the outer diameters of each of the plastic lens elements are shown below. 
     
       
         
           
               
            
               
                   
               
               
                 4th embodiment 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 Plastic Lens 
                 421 
                 422 
                 423 
                 430 
                 425 
               
               
                   
                 Element 
                 ψN11 
                 ψN12 
                 ψN13 
                 ψN21 
                 ψN22 
               
               
                   
                   
               
               
                   
                 Outer Diameter 
                 3.3 
                 3.4 
                 3.5 
                 5.32 
                 5.52 
               
               
                   
                 (mm) 
               
               
                   
                   
               
            
           
         
       
     
     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 7 
               
             
            
               
                   
               
               
                 4th embodiment 
               
               
                 f = 3.49 mm, Fno = 2.04, HFOV = 36.1 deg. 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 Surface 
                   
                   
                   
                   
                   
                   
                   
                 Focal 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 # 
                   
                 Curvature radius 
                 Thickness 
                 Material 
                 Index 
                 Abbe # 
                 Length 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 0 
                 Object 
                 Plano 
                 Infinity 
                   
                   
                   
                   
               
               
                 1 
                 Ape. stop 
                 Plano 
                 −0.255 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 2 
                 Lens 1 
                 1.423 
                 ASP 
                 0.587 
                 Plastic 
                 1.545 
                 56.1 
                 3.03 
               
               
                 3 
                   
                 8.744 
                 ASP 
                 0.049 
                   
                   
                   
                   
               
               
                 4 
                 Lens 2 
                 8.512 
                 ASP 
                 0.220 
                 Plastic 
                 1.660 
                 20.4 
                 −7.15 
               
               
                 5 
                   
                 3.004 
                 ASP 
                 0.169 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 6 
                 Stop 
                 Plano 
                 0.162 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 7 
                 Lens 3 
                 −73.466 
                 ASP 
                 0.523 
                 Plastic 
                 1.544 
                 56.0 
                 −512.48 
               
               
                 8 
                   
                 −100.000 
                 ASP 
                 0.357 
                   
                   
                   
                   
               
               
                 9 
                 Lens 4 
                 87.853 
                 ASP 
                 0.563 
                 Plastic 
                 1.544 
                 56.0 
                 2.02 
               
               
                 10 
                   
                 −1.108 
                 ASP 
                 0.267 
                   
                   
                   
                   
               
               
                 11 
                 Lens 5 
                 −3.067 
                 ASP 
                 0.340 
                 Plastic 
                 1.534 
                 55.9 
                 −1.67 
               
               
                 12 
                   
                 1.302 
                 ASP 
                 0.500 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 13 
                 IR-cut filter 
                 Plano 
                 0.300 
                 Glass 
                 1.517 
                 64.2 
                 — 
               
               
                 14 
                   
                 Plano 
                 0.258 
                   
                   
                   
                   
               
               
                 15 
                 Image 
                 Plano 
                 — 
                   
                   
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                 Surface 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
               
               
                 Reference wavelength is 587.6 nm (d-line). 
               
               
                 Effective radius of Surface 6 is 0.810 mm. 
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 8 
               
               
                   
               
               
                 Aspheric Coefficients 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Surface # 
                 2 
                 3 
                 4 
                 5 
                 7 
               
               
                   
               
               
                 k = 
                 −1.8377E−01 
                 2.0125E+01 
                 −3.7459E+00 
                 2.3442E+00 
                 0.0000E+00 
               
               
                 A4 = 
                 −1.5373E−02 
                 −3.0395E−01 
                 −3.7053E−01 
                 −1.6078E−01 
                 −2.4321E−01 
               
               
                 A6 = 
                 1.3620E−01 
                 6.8203E−01 
                 1.1288E+00 
                 6.6418E−01 
                 3.2677E−02 
               
               
                 A8 = 
                 −4.3499E−01 
                 −7.8626E−01 
                 −1.4182E+00 
                 −9.0459E−01 
                 8.4950E−02 
               
               
                 A10 = 
                 6.2211E−01 
                 1.7994E−01 
                 7.0141E−01 
                 7.3394E−01 
                 −4.8979E−01 
               
               
                 A12 = 
                 −3.8754E−01 
                 6.4466E−02 
                 −4.9010E−02 
                 −1.8177E−01 
                 4.3708E−01 
               
               
                   
               
               
                 Surface # 
                 8 
                 9 
                 10 
                 11 
                 12 
               
               
                   
               
               
                 k = 
                 0.0000E+00 
                 0.0000E+00 
                 −8.0532E−01 
                 −1.9766E+01 
                 −7.6132E+00 
               
               
                 A4 = 
                 −1.8813E−01 
                 1.9114E−02 
                 3.6682E−01 
                 −1.0033E−01 
                 −1.2934E−01 
               
               
                 A6 = 
                 −1.5778E−02 
                 −9.2318E−02 
                 −3.8632E−01 
                 −1.3491E−01 
                 6.7047E−02 
               
               
                 A8 = 
                 −6.7829E−02 
                 6.7191E−02 
                 3.3185E−01 
                 1.8696E−01 
                 −2.7074E−02 
               
               
                 A10 = 
                 1.6563E−01 
                 −5.6716E−02 
                 −1.6217E−01 
                 −8.5802E−02 
                 7.6230E−03 
               
               
                 A12 = 
                 −1.8519E−01 
                 2.8827E−02 
                 4.4494E−02 
                 1.9561E−02 
                 −1.4189E−03 
               
               
                 A14 = 
                 8.8241E−02 
                 −5.3565E−03 
                 −6.4742E−03 
                 −2.2529E−03 
                 1.5179E−04 
               
               
                 A16 = 
                   
                   
                 3.8861E−04 
                 1.0480E−04 
                 −6.8293E−06 
               
               
                   
               
            
           
         
       
     
     In the 4th embodiment, the equation of the aspheric surface profiles is the same as the equation of the 1st embodiment, so an explanation in this regard will not be provided again. 
     5th Embodiment 
       FIG.  5 A  is a schematic view of an electronic device  10  according to the 5th embodiment of the present disclosure.  FIG.  5 B  is another schematic view of the electronic device  10  according to the 5th embodiment.  FIG.  5 C  is a block diagram of the electronic device  10  according to the 5th embodiment. As shown in  FIG.  5 A ,  FIG.  5 B  and  FIG.  5 C , the electronic device  10  of the 5th embodiment is a smartphone and includes a camera module  11  and an image sensor  13 , and the camera module  11  includes, in order from an object side to an image side along the optical axis, an imaging lens assembly  12  according to the present disclosure and an image surface (reference number is not shown), wherein the image sensor  13  is disposed on an image surface of the camera module  11 . Therefore, great image quality can be obtained, and the demand for high image specification can be satisfied. 
     Specifically, the user activates the capturing mode by the user interface  19  of the electronic device  10 , wherein the user interface  19  of the 5th embodiment can be a touch screen  19   a , a button  19   b , etc. At this moment, the imaging lens assembly  12  collects imaging light on the image sensor  13  and outputs electronic signals associated with images to an image signal processor (ISP)  18 . 
     In response to the camera specification of the electronic device  10 , the camera module  11  can further include an autofocus assembly  14  and an optical anti-shake mechanism  15 , and the electronic device  10  can further include at least one auxiliary optical component  17  and at least one sensing component  16 . The auxiliary optical component  17  can be flash modules, infrared distance measurement components, laser focus modules and modules for compensating for color temperatures. The sensing component  16  can have functions for sensing physical momentum and kinetic energies, such as an accelerator, a gyroscope, and a hall effect element, so as to sense shaking or jitters applied by hands of the user or external environments, thus the autofocus assembly  14  and the optical anti-shake mechanism  15  disposed on the camera module  11  can function to obtain great image quality and facilitate the electronic device  10  according to the present disclosure to have a capturing function with multiple modes, such as taking optimized selfies, high dynamic range (HDR) with a low light source, 4K resolution recording, etc. Furthermore, the user can visually see the captured image of the camera through the touch screen  19   a  and manually operate the view finding range on the touch screen  19   a  to achieve the auto focus function of what you see is what you get. 
     Furthermore, as shown in  FIG.  5 B , the camera module  11 , the image sensor  16  and the auxiliary optical component  17  can be disposed on a flexible printed circuit board (FPC)  77  and electrically connected with the associated elements, such as an image signal processor by a connector  78  so as to perform a capturing process. Because the current electronic devices, such as smart phone, have a tendency of being light and thin, the way of disposing the camera module and related elements on the flexible printed circuit board and then integrating the circuit into the main board of the electronic device via the connector can satisfy the mechanical design of the limited space inside the electronic device and the layout requirements, and obtain more margins. The auto focus function of the camera module can be controlled more flexibly via the touch screen of the electronic device. In the 5th embodiment, the electronic device  10  includes a plurality of image sensors  16  and a plurality of auxiliary optical components  17 , and the image sensors  16  and the auxiliary optical components  17  are disposed on the flexible printed circuit board  77  and at least one other flexible printed circuit board (reference number is not shown) and electrically connected with the associated elements, such as the image signal processor  18 , by corresponding connectors so as to perform a capturing process. In other embodiments (not shown), the image sensor and the auxiliary optical component can also be disposed on the main board of the electronic device or carrier boards in other forms according to requirements of the mechanical design and the circuit layout. 
     Moreover, the electronic device  10  can further include, but not be limited to, a wireless communication unit, a control unit, a storage unit), a random-access memory (RAM), a read-only memory (ROM), or the combination thereof. 
     6th Embodiment 
       FIG.  6    is a schematic view of an electronic device  20  according to the 6th embodiment of the present disclosure. The electronic device  20  of the 6th embodiment is a tablet, and the electronic device  20  includes a camera module  21  according the present disclosure. 
     7th Embodiment 
       FIG.  7    is a schematic view of an electronic device  30  according to the 7th embodiment of the present disclosure. The electronic device  30  of the 7th embodiment is a wearable device, and the electronic device  30  includes a camera module  31  according to the present disclosure. 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. It is to be noted that Tables 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.