Abstract:
The invention discloses an optical lens for capturing image and an image capture module. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens element with positive refractive power having a convex object-side surface; a second lens element with positive refractive power having a convex image-side surface; a third lens element with negative refractive power having a convex image-side surface and a concave object-side surface; a fourth lens element with refractive power having a convex object-side surface, both the object-side surface and the image-side surface of the fourth lens element are aspheric; a fifth lens element with refractive power having a concave image-side surface, and at least one of the image-side surface and object-side surface has at least one inflection point. The optical lens can reduce the sensitivity for use in compact cameras with camera functionalities.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority from Taiwan Patent Application No. 102136420, filed on Oct. 8, 2013 in Taiwan Intellectual Property Office, the contents of which are hereby incorporated by reference in their entirety. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention is related to an optical lens for capturing image and an image capture module using the optical lens. More particularly, the present invention relates to an optical lens having five lens elements and image capture module using the optical lens, so as to capture high resolution image and to be applied to 3C products. 
         [0004]    2. Description of the Related Art 
         [0005]    In compact electronic products such as digital cameras, mobile phone, or a panel computer, an optical lens is generally installed for capturing images of an object, and the optical lens for capturing image tends to be developed with a compact design and a low cost, while meeting the user requirements of good aberration correction ability, high resolution, and high image quality. 
         [0006]    In prior arts, an optical lens for capturing image of a compact electronic product comes with different designs, including the two-lens, three-lens, four-lens, and five-or-more lens designs. However, if the imaging quality is taken into consideration, the optical lens for capturing image with the four-lens or five-lens designs has advantages on image aberration and modulation transfer function (MTF) performance, wherein the four-lens design having a lower resolution than the five-lens. So, the five-lens design is applicable for electronic products requiring the high quality and high pixels. 
         [0007]    In various compact designs of the five-lens optical lens for capturing image having a fixed focal length, different combinations of lens of positive and negative refractive powers are applied. For example, the fourth lens element with negative refractive power and the fifth lens element with negative refractive power are adopted to increase the back focal length and the total length of the optical lens, so that it is difficult to shorten the total length of the optical lens. 
         [0008]    In various five-lens designs of the optical lens for capturing image with a fixed focal length, the first lens element has a convex image-side surface to facilitate a good balance between an increase of the view angle of the optical imaging system and the effect of the aberration correction, or the fourth lens element and the fifth lens element with different refractive powers are adopted, and the fourth lens element or the fifth lens element has an inflection point, and such optical lens for capturing image meets the requirements for a good aberration and a reduced total length of the optical imaging system. 
         [0009]    Therefore, how to shorten effectively the total length of the optical lens for capturing image and improve the image quality becomes an important issue. 
       SUMMARY OF THE INVENTION 
       [0010]    According to the above problem, the purpose of the present invention is to provide an optical lens for capturing image and an image capture module to shorten the total length of the optical lens and improve the image quality by the combination of five lens of refractive powers, a convex surface design, and a concave surface design. Thus, the optical lens for capturing image and the image capture module can be applied to compact electronic products. 
         [0011]    Based on the purpose of the present invention, an optical lens for capturing image is proposed. The invention provides the optical lens, in order from an object side to an image side along the optical axis, comprising: a first lens element along the optical axis with positive refractive power having a convex object-side surface; a second lens element along the optical axis with positive refractive power having a convex image-side surface; a third lens element along the optical axis with negative refractive power having a concave object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the third lens element is aspheric; a fourth lens element along the optical axis with refractive power having a convex object-side surface, both the object-side surface and the image-side surface of the fourth lens element are aspheric; and a fifth lens element along the optical axis with refractive power having a concave image-side surface and both the image-side surface and the object-side surface of the fifth lens element are aspheric, and at least one of the image-side surface and the object-side surface of the fifth lens element has at least one inflection point. 
         [0012]    Preferably, the material of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element comprise a plastic material or a glass material. 
         [0013]    Preferably, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied: 0.5&lt;(f/f1)+(f/f2)&lt;2.5. 
         [0014]    Preferably, a focal length of the optical lens for capturing image is f, half of the maximal field of view of the optical lens for capturing image is HFOV, and the following relationship is satisfied: 1&lt;HFOV/f&lt;35. 
         [0015]    Preferably, an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, and the following relationship is satisfied: |V1−V4|&lt;10, |V2−V3|&gt;28. 
         [0016]    Based on purpose of the present invention, an image capture module is proposed. The image capture module comprises an optical lens for capturing image, an image sensing device, and an aperture stop. In order from an object side to an image side, the optical lens along the optical axis comprising: a first lens element along the optical axis with positive refractive power having a convex object-side surface; a second lens element along the optical axis with positive refractive power having a convex image-side surface; a third lens element along the optical axis with negative refractive power having a concave object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the third lens element is aspheric; a fourth lens element along the optical axis with refractive power having a convex object-side surface, both the object-side surface and the image-side surface of the fourth lens element are aspheric; and a fifth lens element along the optical axis with refractive power having a concave image-side surface and both the image-side surface and the object-side surface of the fifth lens element are aspheric, and at least one of the image-side surface and the object-side surface of the fifth lens element has at least one inflection point. The image sensing device is disposed on the image plane to capture the image of an object under shooting. The distance along the optical axis from the aperture stop to the image plane is SL, the distance along the optical axis from the object-side surface of the first lens element to the image plane is TTL, the distance along the optical axis from the object-side surface of the first lens element to the image-side surface of the fifth lens element is TD, the distance along the optical axis from the image-side surface of the fifth lens element to the image plane is BFL, and the following relationship is satisfied: 1.5&lt;TTL&lt;5.5, 1.5&lt;TD/BFL&lt;4.0, 0.5&lt;SL/TTL&lt;1.5. 
         [0017]    Preferably, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied: 0.5&lt;(f/f1)+(f/f2)&lt;2.5. 
         [0018]    Preferably, a focal length of the optical lens for capturing image is f, half of the maximal field of view of the optical lens for capturing image is HFOV, and the following relationship is satisfied: 1&lt;HFOV/f&lt;35. 
         [0019]    Preferably, an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, and the following relationship is satisfied: ↑V1−V4|&lt;10, |V2−V3|&gt;28. 
         [0020]    Preferably, the image capture module further comprises an IR-bandstop filter to adjust the wavelength limit of the light of the capturing image. 
         [0021]    Preferably, the material of the IR-bandstop filter comprises a panel glass material, the image capture module makes the object be imaged on the image sensing device via the combination of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the aperture stop, and the IR-bandstop filter. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]      FIG. 1A  is a schematic view of the image capture module according to a first embodiment of the present application. 
           [0023]      FIG. 1B  is astigmatic field curves and a distortion curve of the image capture module according to the first embodiment of the present application. 
           [0024]      FIG. 1C  is longitudinal spherical aberration curves of the image capture module according to the first embodiment of the present application. 
           [0025]      FIG. 2A  is a schematic view of the image capture module according to a second embodiment of the present application. 
           [0026]      FIG. 2B  is astigmatic field curves and a distortion curve of the image capture module according to the second embodiment of the present application. 
           [0027]      FIG. 2C  is longitudinal spherical aberration curves of the image capture module according to the second embodiment of the present application. 
           [0028]      FIG. 3A  is a schematic view of the image capture module according to a third embodiment of the present application. 
           [0029]      FIG. 3B  is astigmatic field curves and a distortion curve of the image capture module according to the third embodiment of the present application. 
           [0030]      FIG. 3C  is longitudinal spherical aberration curves of the image capture module according to the third embodiment of the present application. 
           [0031]      FIG. 4A  is a schematic view of the image capture module according to a fourth embodiment of the present application. 
           [0032]      FIG. 4B  is astigmatic field curves and a distortion curve of the image capture module according to the fourth embodiment of the present application. 
           [0033]      FIG. 4C  is longitudinal spherical aberration curves of the image capture module according to the fourth embodiment of the present application. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0034]    As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list. 
         [0035]    Referring to  FIG. 1A ,  FIG. 1A  is a schematic view of an image capture module according to a first embodiment of the present application. As shown in  FIG. 1A , an image capture module of the present invention, sequentially arranged from an object side to an image side, along the optical axis comprising: the first lens element  110 , the second lens element  120 , the third lens element  130 , the fourth lens element  140 , and the fifth lens element  150 . The first lens element  110  with positive refractive power has a convex object-side surface  111 . The second lens element  120  with positive refractive power has a convex image-side surface  122 . The third lens element  130  with negative refractive power has a concave object-side surface  131  and convex image-side surface  132 , and at least one of an object-side surface  131  and the image-side surface  132  of the third lens element  130  is aspheric. The fourth lens element  140  with refractive power has a convex object-side surface  141 , and both the object-side surface  141  and the image-side surface  142  of the fourth lens element  140  are aspheric. The fifth lens element  150  with refractive power having a concave image-side surface  152 , and at least one of the object-side surface  151  and the image-side surface  152  of the fifth lens element  150  has at least one inflection point. 
         [0036]    The image capture module of the present invention further comprises an aperture stop  100  and an IR-bandstop filter  160 . The aperture stop  100  is a front aperture between a photographed object and the first lens element  110 , and the IR-bandstop filter  160  is between the fifth lens element  150  and an image plane  170 . The IR-bandstop filter  160  is generally made of panel glass without affecting the focal length of the image capture module. 
         [0037]    The image capture module further comprises an image sensing device  180  on the image plane  170  for imaging an object to be imaged. The first lens element  110 , the second lens element  120 , the third lens element  130 , the fourth lens element  140 , and the fifth lens element  150  comprise a plastic material or a glass material, and the aspheric surface formula as given in Equation (1): 
         [0000]        z=ch   2 /[1+[1−( k+ 1) c   2   h   2 ] 0.5   ]+Ah   4   +Bh   6   +Ch   8   +Dh   10   +Eh   12   +Fh   14   +Gh   16   +Hh   18   +Jh   20    (1)
 
       Wherein, 
       [0000]    
       
         z is the position value of the position along the optical axis and at the height of h with reference to the surface apex, 
         k is the conic coefficient, 
         c is the reciprocal of curvature radius, and 
         A, B, C, D, E, F, G, H, and J are high level aspheric coefficient. 
       
     
         [0042]    The detailed optical data of the first embodiment are show in Table 1, wherein the object-side surfaces and the image-side surfaces of the first lens element  110  to the fifth lens element  150  comply with the aspheric surface formula as given in Equation (1), their aspheric coefficients are listed in Table 2, f=3.02119 mm, f1=4.231 mm, f2=4.439 mm, TTL=4.415 mm, BFL=1.1226 mm, SL=4.324 mm, HFOV=44 deg, and TD=3.189 mm. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 1 
               
             
             
               
                   
               
               
                 The optical data of the first embodiment. 
               
               
                 The optical data of the first embodiment 
               
             
          
           
               
                   
                 Curvature 
                   
                   
                 Abbe# 
                 Focal 
               
               
                 Surface# 
                 Radius 
                 Thickness 
                 Index 
                 (Vd) 
                 length 
               
               
                   
               
             
          
           
               
                 Aperture Stop 
                 ∞ 
                 −0.09 
                   
               
             
          
           
               
                 Lens 1 
                 Surface #1 
                 1.91 
                 0.40 
                 1.53 
                 56.0 
                 4.23 
               
               
                   
                 Surface #2 
                 11.27 
                 0.34 
               
               
                 Lens 2 
                 Surface #3 
                 −7.69 
                 0.56 
                 1.53 
                 56.0 
                 4.44 
               
               
                   
                 Surface #4 
                 −1.86 
                 0.33 
               
               
                 Lens 3 
                 Surface #5 
                 −0.64 
                 0.26 
                 1.63 
                 23.8 
                 −1.96 
               
               
                   
                 Surface #6 
                 −1.53 
                 0.05 
               
               
                 Lens 4 
                 Surface #7 
                 1.76 
                 0.66 
                 1.54 
                 56.0 
                 2.370 
               
               
                   
                 Surface #8 
                 −4.19 
                 0.07 
               
               
                 Lens 5 
                 Surface #9 
                 1.16 
                 0.47 
                 1.53 
                 56.0 
                 −7.97 
               
               
                   
                 Surface  
                 0.78 
                 0.50 
               
               
                   
                 #10 
               
               
                 IR- 
                 Surface 
                 ∞ 
                 0.3 
                 1.51 
                 64.1 
               
               
                 bandstop 
                 #11 
               
               
                 filter 
                 Surface 
                 ∞ 
                 0.42 
               
               
                   
                 #12 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
             
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 2 
               
               
                   
               
               
                 The aspheric coefficients of the first embodiment. 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 1 
                 2 
                 3 
                 4 
                 5 
               
               
                   
               
               
                 k 
                 −16.5 
                 0.000 
                 0.000 
                 −10.9 
                 −2.8 
               
               
                 A 
                 0.2473 
                 −0.0868 
                 −0.1029 
                 −0.1734 
                 −0.2655 
               
               
                 B 
                 −0.5536 
                 −0.0759 
                 −0.0668 
                 −0.7516 
                 −0.1852 
               
               
                 C 
                 1.2251 
                 −0.2242 
                 −1.2545 
                 3.2816 
                 0.1347 
               
               
                 D 
                 −3.4732 
                 1.0533 
                 6.3316 
                 −8.878 
                 0.7980 
               
               
                 E 
                 6.9524 
                 −2.6951 
                 −13.8915 
                 14.5750 
                 0.4635 
               
               
                 F 
                 −8.1183 
                 2.9995 
                 14.5881 
                 −12.6233 
                 −2.5953 
               
               
                 G 
                 3.9631 
                 −0.9737 
                 −5.6691 
                 4.3645 
                 1.4673 
               
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 6 
                 7 
                 8 
                 9 
                 10 
               
               
                   
               
               
                 k 
                 −1.57 
                 −0.55 
                 −22.8 
                 −6.6 
                 −4.0 
               
               
                 A 
                 −0.0824 
                 −0.1760 
                 0.2828 
                 −0.0558 
                 −0.0655 
               
               
                 B 
                 −0.0685 
                 0.1649 
                 −0.1953 
                 −0.0414 
                 0.0027 
               
               
                 C 
                 −0.2262 
                 −0.1464 
                 0.0613 
                 0.0500 
                 0.0078 
               
               
                 D 
                 1.1256 
                 0.0727 
                 −0.0081 
                 −0.0235 
                 −0.0039 
               
               
                 E 
                 −1.3107 
                 −0.0198 
                 −0.0006 
                 0.0054 
                 0.0008 
               
               
                 F 
                 0.6302 
                 0.0025 
                 −0.0006 
                 −0.0006 
                 −0.0001 
               
               
                 G 
                 −0.1099 
                 −9.5e−005 
                 −2.2e−005 
                 −0.0006 
                 4.4e−006 
               
               
                   
               
             
          
         
       
     
         [0043]    In the embodiment of the present image capture module, each related equation is expressed as below: TTL=4.415 mm, HFOV/f=14.564, TD/BFL=2.601, (f/f1)+(f/f2)=1.395, SL/TTL=0.979, |V1−V4|=0.02, and |V2−V3|=32.18. 
         [0044]    According to the optical data as shown in Table 1 and the series of aberration curves as shown in  FIG. 1B  and  FIG. 1C , the image capture module in accordance with this preferred embodiment of the present invention provides good correction results in aspects of the longitudinal spherical aberration, astigmatic field curving, and distortion. 
         [0045]    Referring to  FIG. 2A ,  FIG. 2A  is a schematic view of the image capture module according to a second embodiment of the present application. As shown in  FIG. 2A , an image capture module of the present invention, sequentially arranged from an object side to an image side, along the optical axis comprising: the first lens element  210 , the second lens element  220 , the third lens element  230 , the fourth lens element  240 , and the fifth lens element  250 . The first lens element  210  with positive refractive power has a convex object-side surface  211 . The second lens element  220  with positive refractive power has a convex image-side surface  222 . The third lens element  230  with negative refractive power has a concave object-side surface  231  and a convex image-side surface  232 , and at least one of the object-side surface  231  and the image-side surface  232  of the third lens element  230  is aspheric. The fourth lens element  240  with refractive power has a convex object-side surface  241 , and both the object-side surface  241  and the image-side surface  242  of the fourth lens element  240  are aspheric. The fifth lens element  250  with refractive power having a concave image-side surface  252 , and at least one of the object-side surface  251  and the image-side surface  252  of the fifth lens element  250  has at least one inflection point. 
         [0046]    The image capture module of the present invention further comprises an aperture stop  200  and an IR-bandstop filter  260 . The aperture stop  200  is a middle aperture between a photographed object and the second lens element  220 , and the IR-bandstop filter  260  is between the fifth lens element  250  and an image plane  270 . The IR-bandstop filter  260  is generally made of panel glass without affecting the focal length of the image capture module. 
         [0047]    The image capture module further comprises an image sensing device  280  on the image plane  270  for imaging an object to be imaged. The first lens element  210 , the second lens element  220 , the third lens element  230 , the fourth lens element  240 , and the fifth lens element  250  comprise a plastic material or a glass material. 
         [0048]    The detailed optical data of the second embodiment are show in Table 3, wherein the object-side surfaces and the image-side surfaces of the first lens element  210  to the fifth lens element  250  comply with the aspheric surface formula as given in Equation (1), their aspheric coefficients are listed in Table 4, f=1.7434 mm, f1=3.012 mm, f2=2.358 mm, TTL=2.579 mm, BFL=0.692 mm, SL=2.348 mm, HFOV=44 deg, and TD=1.887 mm. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 The optical data of the second embodiment. 
               
               
                 The optical data of the second embodiment 
               
             
          
           
               
                   
                 Curvature 
                   
                   
                 Abbe# 
                 Focal 
               
               
                 Surface# 
                 Radius 
                 Thickness 
                 Index 
                 (Vd) 
                 length 
               
               
                   
               
             
          
           
               
                 Lens 1 
                 Surface 
                 1.15 
                 0.22 
                 1.53 
                 56.0 
                 3.01 
               
               
                   
                 #1 
               
               
                   
                 Surface 
                 3.76 
                 0.00 
               
               
                   
                 #2 
               
             
          
           
               
                 Aperture Stop 
                 ∞ 
                 0.16 
                   
               
             
          
           
               
                 Lens 2 
                 Surface 
                 5.76 
                 0.26 
                 1.53 
                 56.0 
                 2.35 
               
               
                   
                 #3 
               
               
                   
                 Surface 
                 −1.59 
                 0.20 
               
               
                   
                 #4 
               
               
                 Lens 3 
                 Surface 
                 −0.39 
                 0.19 
                 1.63 
                 23.9 
                 −1.26 
               
               
                   
                 #5 
               
               
                   
                 Surface 
                 −0.93 
                 0.03 
               
               
                   
                 #6 
               
               
                 Lens 4 
                 Surface 
                 1.05 
                 0.45 
                 1.54 
                 56.0 
                 1.61 
               
               
                   
                 #7 
               
               
                   
                 Surface 
                 −4.63 
                 0.09 
               
               
                   
                 #8 
               
               
                 Lens 5 
                 Surface 
                 0.66 
                 0.25 
                 1.53 
                 56.0 
                 −9.63 
               
               
                   
                 #9 
               
               
                   
                 Surface 
                 0.50 
                 0.2 
               
               
                   
                 #10 
               
               
                 IR- 
                 Surface 
                 ∞ 
                 0.14 
                 1.51 
                 64.2 
               
               
                 bandstop 
                 #11 
               
               
                 filter 
                 Surface 
                 ∞ 
                 0.29 
               
               
                   
                 #12 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
             
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 4 
               
               
                   
               
               
                 The aspheric coefficients of the second embodiment 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 1 
                 2 
                 3 
                 4 
                 5 
               
               
                   
               
               
                 k 
                 −12.8 
                 0.00 
                 0.00 
                 −2.55 
                 −2.58 
               
               
                 A 
                 0.8162 
                 −0.8575 
                 −0.9379 
                 −0.6746 
                 −2.1663 
               
               
                 B 
                 −8.7701 
                 −0.7109 
                 −1.4445 
                 −12.590 
                 −1.5984 
               
               
                 C 
                 72.7 
                 −32.0 
                 −39.9 
                 138.5 
                 10.379 
               
               
                 D 
                 −602 
                 191 
                 574 
                 −1264 
                 120 
               
               
                 E 
                 2676 
                 −339 
                 −6177 
                 6397 
                 217 
               
               
                 F 
                 −6110 
                 −1183 
                 31673 
                 −15339 
                 −3336 
               
               
                 G 
                 5053 
                 5231 
                 −53644 
                 14611 
                 5112 
               
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 6 
                 7 
                 8 
                 9 
                 10 
               
               
                   
               
               
                 k 
                 −0.90 
                 0.30 
                 15.12 
                 −4.15 
                 −3.17 
               
               
                 A 
                 −0.8214 
                 −1.1201 
                 1.0972 
                 −0.3710 
                 −0.4448 
               
               
                 B 
                 0.4115 
                 2.1925 
                 −2.6353 
                 −0.6217 
                 0.1350 
               
               
                 C 
                 −9.9564 
                 −6.2397 
                 2.77159 
                 2.3546 
                 0.3494 
               
               
                 D 
                 156 
                 10.0 
                 −1.2465 
                 −3.3321 
                 −0.5699 
               
               
                 E 
                 −561 
                 −9.1454 
                 −0.2730 
                 2.3225 
                 0.3827 
               
               
                 F 
                 803 
                 3.4159 
                 0.39666 
                 −0.7804 
                 −0.1260 
               
               
                 G 
                 −408 
                 −0.5063 
                 −0.0587 
                 0.1013 
                 0.0164 
               
               
                   
               
             
          
         
       
     
         [0049]    In the embodiment of the present image capture module, each related equation is expressed as below: TTL=2.579 mm, HFOV/f=25.238, TD/BFL=2.726, (f/f1)+(f/f2)=1.318, SL/TTL=0.911, |V1−V4|=0.02, and |V2−V3|=32.18. 
         [0050]    According to the optical data as shown in Table 3 and the series of aberration curves as shown in  FIG. 2B  and  FIG. 2C , the image capture module in accordance with this preferred embodiment of the present invention provides good correction results in aspects of the longitudinal spherical aberration, astigmatic field curving, and distortion. 
         [0051]    Referring to  FIG. 3A ,  FIG. 3A  is a schematic view of the image capture module according to a third embodiment of the present application. As shown in  FIG. 3A , an image capture module of the present invention, sequentially arranged from an object side to an image side, along the optical axis comprising: the first lens element  310 , the second lens element  320 , the third lens element  330 , the fourth lens element  340 , and the fifth lens element  350 . The first lens element  310  with positive refractive power has a convex object-side surface  311 . The second lens element  320  with positive refractive power has a convex image-side surface  322 . The third lens element  330  with negative refractive power has a concave object-side surface  331  and a convex image-side surface  332 , and at least one of the object-side surface  331  and the image-side surface  332  of the third lens element  330  is aspheric. The fourth lens element  340  with refractive power has a convex object-side surface  341 , and both the object-side surface  341  and the image-side surface  342  of the fourth lens element  340  are aspheric. The fifth lens element  350  with refractive power having a concave image-side surface  352 , and at least one of the object-side surface  351  and the image-side surface  352  of the fifth lens element  350  has at least one inflection point. 
         [0052]    The image capture module of the present invention further comprises an aperture stop  300  and an IR-bandstop filter  360 . The aperture stop  300  is a front aperture between a photographed object and the first lens element  310 , and the IR-bandstop filter  360  is between the fifth lens element  350  and an image plane  370 . The IR-bandstop filter  360  is generally made of panel glass without affecting the focal length of the image capture module. 
         [0053]    The image capture module further comprises an image sensing device  380  on the image plane  370  for imaging an object to be imaged. The first lens element  310 , the second lens element  320 , the third lens element  330 , the fourth lens element  340 , and the fifth lens element  350  comprise a plastic material or a glass material. 
         [0054]    The detailed optical data of the third embodiment are show in Table 5, wherein the object-side surfaces and the image-side surfaces of the first lens element  310  to the fifth lens element  350  comply with the aspheric surface formula as given in Equation (1), their aspheric coefficients are listed in Table 6, f=3.291 mm, f1=3.97 mm, f2=5.065 mm, TTL=4.248 mm, BFL=1.132 mm, SL=4.102 mm, HFOV=37.5 deg, and TD=3.116 mm. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 5 
               
             
             
               
                   
               
               
                 The optical data of the third embodiment. 
               
               
                 The optical data of the third embodiment. 
               
             
          
           
               
                   
                 Curvature 
                   
                   
                 Abbe# 
                 Focal 
               
               
                 Surface# 
                 Radius 
                 Thickness 
                 Index 
                 (Vd) 
                 length 
               
               
                   
               
             
          
           
               
                 Aperture Stop 
                 ∞ 
                 −0.14 
                   
               
             
          
           
               
                 Lens 1 
                 Surface 
                 1.48 
                 0.45 
                 1.54 
                 56.1 
                 3.98 
               
               
                   
                 #1 
               
               
                   
                 Surface 
                 4.3 
                 0.2 
               
               
                   
                 #2 
               
               
                 Lens 2 
                 Surface 
                 5.81 
                 0.37 
                 1.54 
                 56.1 
                 5.06 
               
               
                   
                 #3 
               
               
                   
                 Surface 
                 −5.2 
                 0.16 
               
               
                   
                 #4 
               
               
                 Lens 3 
                 Surface 
                 −1.36 
                 0.58 
                 1.64 
                 23.9 
                 −3.47 
               
               
                   
                 #5 
               
               
                   
                 Surface 
                 −4.06 
                 0.14 
               
               
                   
                 #6 
               
               
                 Lens 4 
                 Surface 
                 5.56 
                 0.53 
                 1.54 
                 56.1 
                 1.77 
               
               
                   
                 #7 
               
               
                   
                 Surface 
                 −1.13 
                 0.16 
               
               
                   
                 #8 
               
               
                 Lens 5 
                 Surface 
                 −3.9 
                 0.54 
                 1.54 
                 56.1 
                 −1.57 
               
               
                   
                 #9 
               
               
                   
                 Surface 
                 1.12 
                 0.35 
               
               
                   
                 #10 
               
               
                 IR- 
                 Surface 
                 ∞ 
                 0.2 
                 1.52 
                 64.2 
               
               
                 bandstop 
                 #11 
               
               
                 filter 
                 Surface 
                 ∞ 
                 0.57 
               
               
                   
                 #12 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
             
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 6 
               
               
                   
               
               
                 The aspheric coefficients of the third embodiment 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 1 
                 2 
                 3 
                 4 
                 5 
               
               
                   
               
               
                 k 
                 −14.36 
                 0.00 
                 0.00 
                 0.00 
                 −3.42 
               
               
                 A 
                 0.5464 
                 −0.0567 
                 −0.206 
                 −0.316 
                 −0.4172 
               
               
                 B 
                 −1.610 
                 −0.7421 
                 0.1601 
                 −0.2606 
                 0.129 
               
               
                 C 
                 5.187 
                 3.588 
                 −5.32 
                 −0.0195 
                 −0.554 
               
               
                 D 
                 −14.031 
                 −14.820 
                 25.31 
                 −3.266 
                 2.493 
               
               
                 E 
                 24.700 
                 32.534 
                 −70.401 
                 15.125 
                 0.780 
               
               
                 F 
                 −25.059 
                 −39.088 
                 95.776 
                 −21.803 
                 −7.015 
               
               
                 G 
                 10.384 
                 20.536 
                 −46.993 
                 10.6934 
                 4.031 
               
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 6 
                 7 
                 8 
                 9 
                 10 
               
               
                   
               
               
                 k 
                 −154.9 
                 −244 
                 −0.93 
                 0.405 
                 −7.138 
               
               
                 A 
                 −0.492 
                 0.099 
                 0.557 
                 0.053 
                 −0.11157 
               
               
                 B 
                 1.026 
                 −0.128 
                 −0.2545 
                 −0.116 
                 0.075 
               
               
                 C 
                 −2.295 
                 0.07 
                 0.033 
                 0.1452 
                 −0.0428 
               
               
                 D 
                 4.186 
                 0.01 
                 0.0064 
                 −0.085 
                 0.016 
               
               
                 E 
                 −4.245 
                 −0.07 
                 0.0004 
                 0.027 
                 −0.004 
               
               
                 F 
                 2.150 
                 0.045 
                 −0.001 
                 −0.0046 
                 0.0005 
               
               
                 G 
                 −0.4287 
                 −0.010 
                 0.0001 
                 0.0003 
                 −3.094e-005 
               
               
                   
               
             
          
         
       
     
         [0055]    In the embodiment of the present image capture module, each related equation is expressed as below: TTL=4.248 mm, HFOV/f=11.393, TD/BFL=2.752, (f/f1)+(f/f2)=1.477, SL/TTL=0.966, |V1−V4|=0.02, and |V2−V3|=32.18. 
         [0056]    According to the optical data as shown in Table 5 and the series of aberration curves as shown in  FIG. 3B  and  FIG. 3C , the image capture module in accordance with this preferred embodiment of the present invention provides good correction results in aspects of the longitudinal spherical aberration, astigmatic field curving, and distortion. 
         [0057]    Referring to  FIG. 4A ,  FIG. 4A  is a schematic view of the image capture module according to a fourth embodiment of the present application. As shown in  FIG. 4A , an image capture module of the present invention, sequentially arranged from an object side to an image side, along the optical axis comprising: the first lens element  410 , the second lens element  420 , the third lens element  430 , the fourth lens element  440 , the fifth lens element  450 . The first lens element  410  with positive refractive power has a convex object-side surface  411 . The second lens element  420  with positive refractive power has a convex image-side surface  422 . The third lens element  430  with negative refractive power has a concave object-side surface  431  and a convex image-side surface  432 , and at least one of the object-side surface  431  and the image-side surface  432  of the third lens element  430  is aspheric. The fourth lens element  440  with refractive power has a convex object-side surface  441 , and both the object-side surface  441  and the image-side surface  442  of the fourth lens element  440  are aspheric. The fifth lens element  450  with refractive power having a concave image-side surface  452 , and at least one of the object-side surface  451  and the image-side surface  452  of the fifth lens element  450  has at least one inflection point. 
         [0058]    The image capture module of the present invention further comprises an aperture stop  400  and an IR-bandstop filter  460 . The aperture stop  400  is a front aperture between a photographed object and the first lens element  410 , and the IR-bandstop filter  460  is between the fifth lens element  450  and an image plane  470 . The IR-bandstop filter  460  is generally made of panel glass without affecting the focal length of the image capture module. 
         [0059]    The image capture module further comprises an image sensing device  480  on the image plane  470  for imaging an object to be imaged. The first lens element  410 , the second lens element  420 , the third lens element  430 , the fourth lens element  440 , and the fifth lens element  450  comprise a plastic material or a glass material. 
         [0060]    The detailed optical data of the fourth embodiment are show in Table 7, wherein the object-side surfaces and the image-side surfaces of the first lens element  410  to the fifth lens element  450  comply with the aspheric surface formula as given in Equation (1), their aspheric coefficients are listed in Table 8, f=2.333 mm, f1=3.329 mm, f2=3.716 mm, TTL=3.413 mm, BFL=0.964 mm, SL=3.338 mm, HFOV=44 deg, and TD=2.449 mm. 
         [0000]    
       
         
               
             
               
               
               
               
               
               
             
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                 TABLE 7 
               
             
             
               
                   
               
               
                 The optical data of the fourth embodiment. 
               
               
                 The optical data of the fourth embodiment 
               
             
          
           
               
                   
                 Curvature 
                   
                   
                 Abbe# 
                 Focal 
               
               
                 Surface# 
                 Radius 
                 Thickness 
                 Index 
                 (Vd) 
                 length 
               
               
                   
               
             
          
           
               
                 Aperture Stop 
                 ∞ 
                 −0.07 
                   
               
             
          
           
               
                 Lens 1 
                 Surface 
                 1.39 
                 0.33 
                 1.53 
                 56.0 
                 3.32 
               
               
                   
                 #1 
               
               
                   
                 Surface 
                 5.78 
                 0.20 
               
               
                   
                 #2 
               
               
                 Lens 2 
                 Surface 
                 −8.10 
                 0.37 
                 1.53 
                 56.0 
                 3.71 
               
               
                   
                 #3 
               
               
                   
                 Surface 
                 −1.62 
                 0.22 
               
               
                   
                 #4 
               
               
                 Lens 3 
                 Surface 
                 −0.49 
                 0.23 
                 1.63 
                 23.8 
                 −1.96 
               
               
                   
                 #5 
               
               
                   
                 Surface 
                 −0.96 
                 0.04 
               
               
                   
                 #6 
               
               
                 Lens 4 
                 Surface 
                 1.45 
                 0.44 
                 1.53 
                 56.0 
                 3.71 
               
               
                   
                 #7 
               
               
                   
                 Surface 
                 4.83 
                 0.16 
               
               
                   
                 #8 
               
               
                 Lens 5 
                 Surface 
                 0.82 
                 0.42 
                 1.53 
                 56.0 
                 9.74 
               
               
                   
                 #9 
               
               
                   
                 Surface 
                 0.79 
                 0.3 
               
               
                   
                 #10 
               
               
                 IR- 
                 Surface 
                 ∞ 
                 0.21 
                 1.51 
                 64.1 
               
               
                 bandstop 
                 #11 
               
               
                 filter 
                 Surface 
                 ∞ 
                 0.42 
               
               
                   
                 #12 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
             
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 8 
               
               
                   
               
               
                 The aspheric coefficients of the fourth embodiment 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 1 
                 2 
                 3 
                 4 
                 5 
               
               
                   
               
               
                 k 
                 −19.91 
                 0.00 
                 0.00 
                 3.61 
                 −2.26 
               
               
                 A 
                 0.8325 
                 −0.2545 
                 −0.3301 
                 −0.2036 
                 −0.8916 
               
               
                 B 
                 −3.6325 
                 −0.1298 
                 −1.2406 
                 −2.2349 
                 0.4043 
               
               
                 C 
                 12.47 
                 −4.558 
                 −1.7129 
                 15.75 
                 −1.5038 
               
               
                 D 
                 −33.52 
                 16.48 
                 31.81 
                 −93.60 
                 14.45 
               
               
                 E 
                 44.78 
                 −36.9 
                 −227.3 
                 300.1 
                 6.0 
               
               
                 F 
                 −17.741 
                 23.90 
                 632.4 
                 −448.68 
                 −94.8 
               
               
                 G 
                 −25.1 
                 36.95 
                 −562.1 
                 255.3 
                 91.2 
               
               
                   
               
             
          
           
               
                   
                 Surface # 
               
             
          
           
               
                   
                 6 
                 7 
                 8 
                 9 
                 10 
               
               
                   
               
               
                 k 
                 −1.2 
                 0.29 
                 0.00 
                 −4.92 
                 −3.50 
               
               
                 A 
                 −0.3595 
                 −0.5169 
                 0.0457 
                 −0.0814 
                 −0.1265 
               
               
                 B 
                 0.4388 
                 0.6485 
                 −0.1406 
                 −0.2100 
                 −0.017 
               
               
                 C 
                 −0.7770 
                 −0.8597 
                 0.0789 
                 0.3405 
                 0.0740 
               
               
                 D 
                 9.8957 
                 0.6976 
                 −0.0228 
                 −0.2523 
                 −0.0508 
               
               
                 E 
                 −24.35 
                 −0.3809 
                 −0.0004 
                 0.0973 
                 0.0162 
               
               
                 F 
                 22.81 
                 0.1291 
                 0.0014 
                 −0.0187 
                 −0.0026 
               
               
                 G 
                 −7.4 
                 −0.0250 
                 −0.0001 
                 0.0014 
                 0.0001 
               
               
                   
               
             
          
         
       
     
         [0061]    In the embodiment of the present image capture module, each related equation is expressed as below: TTL=3.413 mm, HFOV/f=18.856, TD/BFL=2.541, (f/f1)+(f/f2)=1.329, SL/TTL=0.978, |V1−V4|=0.00, and |V2−V3|=32.18. 
         [0062]    According to the optical data as shown in Table 7 and the series of aberration curves as shown in  FIG. 4B  and  FIG. 4C , the image capture module in accordance with this preferred embodiment of the present invention provides good correction results in aspects of the longitudinal spherical aberration, astigmatic field curving, and distortion. 
         [0063]    In the optical lens for capturing image of the present invention, the lens elements can be made of glass or plastic material. If the lens elements are made of glass, the freedom for distributing the refractive power of the optical lens for capturing image can be increased. If plastic material is adopted to produce the lens elements, the production cost will be reduced effectively. 
         [0064]    In the optical lens for capturing image of the present invention, if the lens element has a convex surface, then the surface of the lens element is convex at a position in proximity to the optical axis; and if the lens element has a concave surface, then the surface of the lens element is concave at a position in proximity to the optical axis. 
         [0065]    In the image capture module of the present invention, the aperture stop can be a front or middle aperture. If the aperture stop is a front aperture, a longer distance between the exit pupil of the image capture module and the image plane can be achieved to provide the telecentric effect and improve the image receiving efficiency of the image sensor such as the CCD or CMOS. If the aperture stop is a middle aperture, the view angle of the system can be expanded to provide a wide angle lens of the image capture module. 
         [0066]    The aforementioned preferred embodiment is to explain the technical ideas and features of the present application. The purpose is to enable those who skilled in this technical area to understand the content of the present application and realize it. It will be understood that the present application is not limited to the details thereof. Various equivalent variations and modifications may still occur to those skilled in this art in view of the teachings of the present application. Thus, all such variations and equivalent modifications are also embraced with the scope of the present application as defined in the appended claim.