Abstract:
A glass lens array module with alignment fixture and a manufacturing method thereof are revealed. A glass lens array is produced by multi-cavity glass molding and alignment members are arranged on a peripheral of non-optical area of the glass lens array. Optical axis of each of two adjacent glass lens arrays is aligned by corresponding alignment members and the glass lens arrays are assembled by glue. A spacer is disposed between the two adjacent glass lens arrays to form a preset interval if needed. Thus a glass lens array module is formed after curing of the glue. Thereby the alignment of the optical axis of the glass lens is achieved easily and optical precision is also attained. Moreover, the manufacturing processes are simplified and the cost is reduced.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a glass lens array module and a manufacturing method thereof, especially to a glass lens array module formed by precision assembling of a plurality of glass lens arrays and applied to lenses of LED sources, lenses of solar energy conversion systems, and optical lenses of mobile phones. 
     Glass precision molding technology has been widely applied to manufacture aspherical molded glass lens with high resolution, good stability and low cost such as lens revealed in US2006/0107695, US2007/0043463, TW095101830, TW095133807, and JP63-295448 etc. A glass preform (or glass material) is set into a mold cavity formed by an upper mold and a lower mold so as to be heating and softening. Then the upper mold and the lower mold are clamped correspondingly and apply pressure on the upper mold and the lower mold so as to make the soft glass perform have the transformed optical surfaces as that of the upper mold and the lower mold. After cooling, a molded glass lens with molding surfaces of the upper mold and the lower mold is produced. In order to reduce manufacturing cost, prior arts—JP63-304201 and US2005/041215 reveal a lens array formed by glass molding. As to a single lens-called a lens element hereunder, JP02-044033 revealed that a lens blank having a plurality of lenses is manufactured by movement of glass materials and multiple molding procedures. Then the lens array is cut into a plurality of lens elements. 
     The optical lens formed by glass molding is widely applied to assembled lenses of LED light sources, lenses of solar energy conversion systems, and optical lenses of mobile phone cameras with advanced features. The assembled lens or optical lens is formed by a plurality of optical lenses with different lens power arranged with a certain air gap between one another on the optical axis. Thus while assembling, an optical axis of each optical lens must be aligned precisely so as to avoid the reduction of resolution, so called optical precision assembling, rather than the mechanical precision. Moreover, the distance between two adjacent optical lenses (interval of air gap) is fixed. Thus the assembling requires a complicated processes and precise calibration process. Therefore, the yield rate is unable to increase and the cost down is difficult. Since the optical resolution (example as MTF effect) will be affected when the optical assembly having disalignment from optical axis, the lens alignment of the optical lenses is more complicated and important. 
     As to the manufacturing of the optical lens array, JP2001194508 disclosed a manufacturing method of plastic optical lens array. Taiwanese patent No. M343166 reveals a manufacturing method of glass optical lens array. After being produced, the optical lens array can be cut to form a single optical lens element so as to be assembled in a lens module. Or the optical lens array is assembled with other optical elements to form a lens submodule array that is then cut to form a lens submodule. The lens submodule is assembled with lens holder, image sensors (image capture devices) or other optical elements to form a lens module. In manufacturing of lens module array, wafer level lens modules are revealed in U.S. Pat. No. 7,183,643, US2007/0070511, WO2008011003 and so on. Refer to  FIG. 1 , a lens module array generally includes an aperture  711 , a cover glass  712 , a plurality of optical lenses and an infrared (IR) cut lens  717 . As shown in figure, the plurality of optical lenses forms a three piece type optical lens set. The optical lens set includes a first optical lens  714 , a second optical lens  715  and a third optical lens  716 . Two adjacent optical lenses are separated by a spacer  713 . After being assembled, a lens module array is formed and then is cut into a plurality of lens modules. 
     In a lens module array, while assembling a lens array with plurality of optical lenses, the alignment of the lens array has effects on resolution of the lens module. In US2006/0249859, imaging techniques are used to determine if stacked wafers are in proper alignment. Fiducial marks that were previously patterned on each wafer of the stack are exposed in an image produced by the infrared ray. In assembling of plastic optical lens arrays, JP2000-321526 and JP2000-227505 revealed bi-convex type optical lens arrays formed by combination of heights with crevices. As to U.S. Pat. No. 7,187,501, cone-shaped projections are provided on a periphery of a resin lens. A plastic lens array is formed by stacking the resin lens plates one over another through fitting these projections and holes to each other. However, in the conventional assembling way of projections and holes to form plastic optical lens array, material shrinkage after the plastic injection molding will lead to size change (or alignment change) of the projections and the holes. Thus the location precision is affected and the alignment of the optical axis is difficult. Therefore, the applications of the plastic optical lens array is limited, especially during manufacturing of small-size lens module, the complicated processes cause cost increase. The molded glass lens has higher refractive index than the plastic lens and also with better thermostability so that the molded glass has been applied to various optical systems. Moreover, the optical lens array made from molded glass exhibit less shrinkage. 
     Thus there is a need to develop a method of manufacturing stacked optical glass lens arrays as well as stacked lens modules with simple structure and high precision so as to provide stacked lens modules for assembled lenses of light emitting diode (LED) light sources, assembled lenses of solar energy conversion systems and optical lenses of phone cameras. And the lens modules meet requirements of mass-production and yield rate. 
     SUMMARY OF THE INVENTION 
     Therefore it is a primary object of the present invention to provide a glass lens array module that is applied lenses of LED sources, lenses of solar energy conversion systems and optical lenses of mobile phones. The glass lens array module includes at least two glass lens arrays that are glued and fixed with a preset interval. The glass lens array is made by multi-cavity glass molding and having a plurality of optical glass lenses (optical area) as well as non-optical area. Moreover, at least one alignment member such as alignment pin and alignment cavity is disposed on a periphery of the non-optical area. Thus the two glass lens arrays are connected and assembled with each other by the alignment member. And the optical axis of each of the plurality of optical glass lenses of the two glass lens arrays is aligned so as to achieve the precision assembling. A plurality of glass lens arrays can also be overlapped and aligned by the alignment member therebetween so as to form a glass lens array module. 
     It is another object of the present invention to provide a manufacturing method of a glass lens array module in which the glass manufacturing method is produced by precision assembling of at least two glass lens arrays. The manufacturing method of a glass lens array module includes following steps:
     S 1 : providing a glass blank;   S 2 : providing a mold of the glass lens array that includes an upper mold and a lower mold which respectively are disposed with a plurality of mold cores for forming optical glass lenses (optical area), and mold pins and/or mold bushings for forming alignment members;   S 3 : setting the glass blank into the mold cavity formed by upper mold and the lower mold so as to be heated and pressured for carrying out a molding process and molds a glass lens array, the glass lens array having a plurality of optical glass lenses and non-optical area which is arranged with alignment members such as an alignment pin and an alignment cavity;   S 4 : repeating above steps to produce at least another glass lens array;   S 5 : coating UV-curing glue on non-optical area of two adjacent glass lens arrays;   S 6 : assembling and aligning the two adjacent glass lens arrays by corresponding alignment members;   S 7 : curing the glue to produce a glass lens array module.   

     The shape and amount of the alignment member disposed on the glass lens array are not limited. The alignment pin can be a column or a rectangular prism while the corresponding alignment cavity is a slot with similar shape. Moreover, the alignment pin can be a cone and the corresponding alignment cavity is a conical hole. For the purpose of optical precision assembly, the alignment member is molded simultaneously with the glass lens array along the optical axis of optical elements. 
     It is a further object of the present invention to provide a glass lens array module with a plurality of optical elements. For convenience of assembling, the alignment member is a through hole that is arranged at location of non-optical area of the glass lens array and the corresponding location of optical element. For the purpose of optical precision assembly, the through hole is molded along with the optical axis. While assembling, the through hole of the glass lens array and the through hole of the optical element are aligned so as to achieve the easy and precision assembling. 
     A manufacturing method of a glass lens array module with through holes as alignment members includes following steps:
     SS 1 : providing a glass blank;   SS 2 : providing a mold of a glass lens array having an upper mold and a lower mold respectively disposed with a plurality of mold cores for forming optical glass lenses (optical area), and mold straight leaders and/or mold straight sleeves for forming through holes;   SS 3 : setting the glass blank into the mold cavity which formed by the upper mold and the lower mold so as to be heated and pressured for carrying out a molding process and molds a glass lens array, the glass lens array having a plurality of optical glass lenses and non-optical area which is arranged with through holes as alignment members;   SS 4 : repeating above steps to produce at least another glass lens array;   SS 5 : preparing an assembly fixture disposed with at least one assembly center shaft;   SS 6 : putting a glass lens array into the assembly fixture and the through hole is inserted by the assembly center shaft for alignment coating glue on the non-optical area of the glass lens array;   SS 7 : putting another glass lens array into the assembly fixture and the through hole is inserted by the assembly center shaft for alignment; attaching this glass lens array with the previous glass lens array by glue;   SS 8 : curing the glue and separate the assembly fixture to form a glass lens array module.   

     Alternatively, the glass lens array module with through holes as alignment members includes an alignment spacer that is disposed with at least one alignment rod. While assembling, the through hole of the glass lens array and the through hole of the optical element are aligned by the alignment rod of the alignment spacer so as to achieve the easy and precision assembling. 
     When the glass lens array module of the present invention is applied to optical systems, the glass lens array module includes at least two glass lens arrays and other optical elements. The optical element can be a cover glass, an aperture, a spacer, an IR filter, an image sensor, a solar conversion die, a circuit board, etc. The cover glass is made of glass and is covered over the glass lens array module for shading external vapors and dusts. The aperture is a round film for control of light entering the optical area. The spacer is disposed between two adjacent glass lens arrays so as to maintain an air gap therebetween for optical effect. The IR filter is often applied to camera lenses for prevent light from entering. In various lens designs, an outer surface of the glass lens array is generally coated an optical film instead of the IR filter. The image sensor is used to convert light entering the camera lens into image signals and the circuit board is connected with the image sensor for transmitting the image signals. The solar conversion die is applied to solar energy conversion system where the solar light is focused by the glass lens array and converted to electricity that is sent by the circuit board. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a cross sectional view of a conventional glass lens array module; 
         FIG. 2  is a cross sectional view of a glass lens array module according to the present invention; 
         FIG. 3  are schematic drawings showing manufacturing processes of an embodiment according to the present invention; 
         FIG. 4  is a partial cross sectional view of another embodiment with conical alignment members according to the present invention; 
         FIG. 5  is an assembly view of a further embodiment with through holes as alignment members according to the present invention; 
         FIG. 6  are schematic drawings showing manufacturing processes of a further embodiment according to the present invention; 
         FIG. 7  is a cross sectional view of a further embodiment applied to solar energy conversion systems according to the present invention; 
         FIG. 8  is a cross sectional view of a further embodiment applied to mobile phone camera lenses according to the present invention; 
         FIG. 9  is a schematic drawing showing the embodiment in  FIG. 5  being cut by laser; 
         FIG. 10  is a cross sectional view of a further embodiment with through holes according to the present invention; 
         FIG. 11  is a cross sectional view of a further embodiment with alignment spacers according to the present invention; 
         FIG. 12  is a cross sectional view of the assembly of the embodiment in  FIG. 11 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Embodiment 1 
     Refer to  FIG. 2 , a glass lens array module  10  includes two glass lens arrays  11 ,  12  and four sets of alignment members (alignment pins  111 , alignment cavity  122  and alignment cavity  112 , alignment pins  121 ). The two glass lens arrays  11 ,  12  are produced by multi-cavity glass molding and having a plurality of optical glass lens (optical area). As shown in  FIG. 2 , there are four meniscus lenses (optical glass lenses) and non-optical area. The four alignment members are respectively arranged at four corners of non-optical area of the two glass lens arrays  11 ,  12 . There are only two sets shown in  FIG. 2 , the alignment members include two alignment pins  111  as well as two alignment cavities  112  disposed on the glass lens array  11  and two alignment cavities  122  as well as two alignment pins  121  arranged correspondingly on the glass lens array  12 . In this embodiment, the alignment pins  111 ,  121  are columnar while the alignment cavities  112 ,  122  are corresponding columnar holes. Because the alignment members having the alignment pins  111 ,  121  and the alignment cavities  112 ,  122  respectively are formed simultaneously with the glass lens arrays  11 ,  12  by the multi-cavity glass molding, the positions of the alignment members and an optical axis  14  of each optical glass lens are fixed and aligned with optical axis. After the two glass lens arrays  11 ,  12  are assembled and aligned with each other by the alignment members, each optical axis  14  of the two glass lens arrays  11 ,  12  is assembled within a preset tolerance so as to achieve the precision assembling. In order to fix the assembled glass lens array module  10 , glue  13  is coated on the non-optical area of the glass lens array  12  (or the glass lens array  11 ). In this embodiment, the glue  13  is ultraviolet (UV) curing glue. After being attached with the glass lens array  11  (or the glass lens array  12 ) and cured the glue  13 , a glass lens array module  10  is formed. 
     Refer to  FIG. 3 , a manufacturing method of glass lens array modules  10  includes following steps: 
     S 1 : providing a rectangular plate glass blank  21 ; 
     SS 2 : providing a mold  22  of a glass lens array  11  having an upper mold  221  and a lower mold  222  that are corresponding to each other and respectively disposed with a plurality of mold cores  227 ,  228  of optical glass lenses and mold pins  223  and/or mold bushings  224  for forming the alignment members;
 
S 3 : setting the glass blank  21  into the mold cavity formed by the upper mold  221  and the lower mold  222 , so as to be heated by a heater  225  and pressured for carrying out a molding process that transferring the mold cores, mold pins and mold bushings of the upper mold  221  and the lower mold  222  onto the melt glass blank  21  thus the glass lens array  11  with alignment members such as an alignment pin  111  and an alignment cavity  112  is produced;
 
S 4 : repeating above steps to produce another glass lens array  12  with alignment members such as an alignment cavity  122  and an alignment pin  121  corresponding to the alignment members of the glass lens array  11 ;
 
S 5 : coating UV-curing glue  13  on non-optical area of the glass lens array  11  or the glass lens array  12 ;
 
S 6 : assembling the two glass lens arrays  11 ,  12  along an optical axis  14  within a preset tolerance by connecting the alignment pin  111  and alignment cavity  112  respectively with the alignment cavity  122  and alignment pin  121  of the glass lens array  12 ;
 
S 7 : curing the glue  13  by UV radiation to produce a glass lens array module  10 .
 
     Embodiment 2 
     Refer to  FIG. 4 , a glass lens array module  10  of this embodiment consists of two glass lens arrays  11 ,  12  and four sets of alignment members that each having a conical alignment pin  113  and a conical alignment cavity  123 . In the  FIG. 4 , only one set of alignment member is revealed. The conical alignment pin  113  and the conical alignment cavity  123  respectively are formed simultaneously with a non-optical area of the glass lens array  11  and of the glass lens array  12 . After assembling the two glass lens arrays  11 ,  12  each optical axis is aligned and fixed by glue. Besides a conical mold pin and a conical mold bushing disposed on the mold  22 , the manufacturing method and assembling way of this embodiment are similar to those of the embodiment one. 
     Embodiment 3 
     Refer to  FIG. 5 , a glass lens array module  10  of this embodiment is composed of two glass lens arrays  11 ,  12  and four alignment members. The alignment members are four sets of through holes. Only two sets of through holes  114 ,  124  are shown in  FIG. 5 . After alignment of through holes  114 ,  124  of two glass lens arrays  11 ,  12 , each optical axis  14  of two glass lens arrays  11 ,  12  is aligned, and then two glass lens arrays  11 ,  12  are connected, cured and fixed by glue  13 . 
     A manufacturing method of this embodiment as shown in  FIG. 6  includes following steps: 
     SS 1 : providing a glass blank  21 ; 
     SS 2 : providing a mold  24  for the glass lens array  11 , having an upper mold  241  and a lower mold  242  that are corresponding to each other and respectively disposed with a plurality of mold cores  227 ,  228  of optical glass lenses and four mold straight leaders  243  and/or mold straight sleeves  224  for forming through holes;
 
SS 3 : setting the glass blank  21  into the mold cavity formed by the upper mold  241  and the lower mold  242  so as to be heated and pressured for carrying out a molding process to form a glass lens array  11  with through holes  115  as alignment members;
 
SS 4 : repeating above steps to produce another glass lens array  12 ;
 
SS 5 : preparing an assembly fixture  23  disposed with at least one assembly center shaft  231 ;
 
SS 6 : putting the second glass lens array  12  into the assembly fixture  23  and the through hole  115  is inserted by the assembly center shaft  231 ; coating glue  13  on its non-optical area;
 
SS 7 : putting the first glass lens any  11  into the assembly fixture  23  and the through hole  115  is inserted by the assembly center shaft  231  for alignment;
 
SS 8 : curing the glue  13  and separating the assembly fixture  23  to form a glass lens array module  10 .
 
     Embodiment 4 
     Refer to  FIG. 7 , an embodiment of a glass lens array module is applied to solar energy conversion systems. In order to increase solar energy conversion efficiency, a plurality of glass lens arrays are overlapped for use. Thus sunlight is focused on solar conversion die  35  so as to convert solar energy into power to be output through a circuit board  36 . In this embodiment two glass lens arrays  31 ,  32  are assembled to form a glass lens array module. A first glass lens array  31  includes 16 biconvex optical areas and a second glass lens array  32  includes 16 corresponding meniscus optical areas. The optical parameters are shown in a list one. The list shows surface number of each optical surface, type, the radius of curvature of each optical surface on the optical axis, the on-axis surface spacing and lens material. In order to achieve optical light concentration effect, the optical axis  14  of each optical area of two glass lens arrays  31 ,  32  should be aligned and a certain distance is maintained between two optical axes  14 . Moreover, on corners of the first and the second glass lens arrays  31 ,  32 , two sets of corresponding alignment pins  311 ,  321  and alignment cavities  322 ,  312  are arranged respectively. There should be four sets of alignment members. While assembling, thermosetting glue  33  is coated on non-optical area of the second glass lens array  32  and then the first glass lens array  31  is overlapped on the second glass lens array  32 . The alignment pins  311 ,  321  are inserted into alignment cavities  322 ,  312  correspondingly for alignment. Thus the optical axis  14  is aligned and a preset interval is maintained. Then the assembly is set into an oven to be heated for curing of the glue  33 . A glass lens array module is formed to be applied to solar energy conversion system. 
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                   
               
               
                 List one 
               
             
          
           
               
                   
                   
                 curvature 
                 spacing 
                   
               
               
                 Surf # 
                 Type 
                 R (mm) 
                 D (mm) 
                 Lens material 
               
               
                   
               
             
          
           
               
                 #1 
                 aspheical 
                 34.4616 
                 4.0 
                 BK7 
               
               
                   
                 diameter 10 mm 
                   
                   
                 Nd = 1.5168; Vd = 
               
               
                 #2 
                 aspherical 
                 −19.5377 
                 0.50 
                 64.167336 
               
               
                 #3 
                 spherical 
                 −19.7630 
                 4.0 
                 BK7 
               
               
                   
                 diameter 8.8 mm 
                   
                   
                 Nd = 1.5168; Vd = 
               
               
                 #4 
                 aspherical 
                 −6.2302 
                 10.0 
                 64.167336 
               
               
                 Solar 
                 STANDARD 
                 ∞ 
                   
                   
               
               
                 conversion 
                   
                   
                   
                   
               
               
                 die 
               
               
                   
               
             
          
         
       
     
     Embodiment 5 
     Referring to  FIG. 8 , a glass lens array module of this embodiment is applied to mobile phone camera lenses. The glass lens array module comprises: from the object side, the glass lens array includes a meniscus first optical lens  41  whose concave surface faces to the image side, a meniscus second optical lens  42  whose convex surface faces to the image side, a M-shaped third optical lens  43  and a plurality of optical elements having a cover glass  44 , an aperture  45 , three spacers  47 , an infrared (IR) filter  48 , an image sensor  46  and a circuit board  36  are assembled. The optical parameters are shown in a list two where, the surf is denoted the optical surface number, the type is denoted aspherical optical surface, R is denoted the radius of curvature of each optical surface on the optical axis, D is denoted the on-axis surface spacing and the lens material. On the optical axis, the spacing of the image side surface of the first optical lens  41  and the objective side surface of the second optical lens  42  is 0.333 mm; the spacing of the image side surface of the second optical lens  42  and the objective side surface of the third optical lens  43  is 0.71 mm; and the spacing of the image side surface of third optical lens  43  and the objective surface of the IR filter  48  is 0.3 mm. 
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
             
           
               
                   
               
               
                 List two 
               
             
          
           
               
                   
                   
                 Curvature 
                 spacing 
                 Lens  
               
               
                 Surf # 
                 Type 
                 R (mm) 
                 D (mm) 
                 material 
               
               
                   
               
             
          
           
               
                 1 (STO) aperture  
                 aspheical 
                 1.0613 
                 0.625417 
                 SCHOTT_ 
               
               
                 and convex 
                   
                   
                   
                 BAC2 
               
               
                 surface of a first  
                   
                   
                   
                   
               
               
                 optical lens 
                   
                   
                   
                   
               
               
                 2 concave surface  
                 aspherical 
                 2.8968 
                 0.333 
                   
               
               
                 of the first 
                   
                   
                   
                   
               
               
                 optical lens 
                   
                   
                   
                   
               
               
                 3 concave  
                 aspherical 
                 −1.2031 
                 0.3 
                 OHARA_ 
               
               
                 surface of a 
                   
                   
                   
                 FTM16 
               
               
                 second optical lens 
                   
                   
                   
                   
               
               
                 4 convex  
                 aspherical 
                 −1.4586 
                 0.71 
                   
               
               
                 surface of the 
                   
                   
                   
                   
               
               
                 second optical lens 
                   
                   
                   
                   
               
               
                 5 object side  
                 aspherical 
                 7.6865 
                 0.635 
                 SCHOTT_ 
               
               
                 of a third 
                   
                   
                   
                 BAC2 
               
               
                 optical lens 
                   
                   
                   
                   
               
               
                 6 image side  
                 aspherical 
                 3.4879 
                 0.3 
                   
               
               
                 of the third 
                   
                   
                   
                   
               
               
                 optical lens 
                   
                   
                   
                   
               
               
                 7 object side  
                   
                 ∞ 
                 0.3 
                 BK7 
               
               
                 of IR filter 
                   
                   
                   
                   
               
               
                 8 image side  
                   
                 ∞ 
                 0.6895 
                   
               
               
                 of IR filter 
                   
                   
                   
                   
               
               
                 Sensing surface  
                   
                 ∞ 
                   
                   
               
               
                 of image sensor 
               
               
                   
               
             
          
         
       
     
     The manufacturing method of the glass lens array module for this embodiment is similar to that of the embodiment one. Firstly, refer to  FIG. 9 , a glass lens array module having 16 (4×4) first and second optical lenses  41 ,  42  is produced. The alignment members such as alignment cavities  412  and alignment pins  421  shown in  FIG. 8  are disposed on non-optical area of the glass lens array module for alignment of the optical axis  14  of the first optical lens  41  as well as the second optical lens  42  are formed simultaneously. Then produce a plastic lens array having 16 (4×4) third optical lenses  43  by multi-cavity injection molding. As to the aperture  45  and the spacer  47 , they are made in the form of plates having 16 (4×4) units 16 (4×4) optical sensors  46  are welded on preset positions of a circuit board  36 . By UV-curing glue  49 , assembled each plate of optical elements, the glass lens array with arrayed first optical lens  41 , the glass lens array with arrayed second optical lens  42 , and the plastic lens array with arrayed third optical lenses  43  in relative ordering. After being radiated in a UV oven, a glass lens array module with 16 camera lenses is formed. Then 16 camera lenses are obtained by laser cutting, as shown in  FIG. 9 . By such manufacturing method, 16 camera lenses are obtained each time. In each camera lens, the first optical lens  41 , the second optical lens  42  and the third optical lens  43  are all aligned with the optical axis and are with a certain distance from each optical element. Thus the manufacturing cost is reduced and certain optical functions are attained. 
     Embodiment 6 
     Refer to  FIG. 10 , a glass lens array module of this embodiment is applied to mobile phone camera lenses, similar to the embodiment five. The difference of this embodiment and the above one is in the alignment member. At least one through holes  515  is used in this embodiment. Similar to the embodiment one, three glass lens arrays having 16 (4×4) first optical lenses  51 , second optical lenses  52  and third optical lenses  53  produced by multi-cavity glass molding. Four through holes  515  are arranged at non-optical area of four corners of each glass lens array. As to the aperture  55  and the spacer  57 , they are made in the form of plates having 16 (4×4) units. Each plate is disposed with through holes  515  on corresponding positions. Each plate includes four through holes  515 . In  FIG. 10 , there is only a through hole  515  shown. 16 (4×4) optical sensors  56  are welded on preset positions of a circuit board  36 . Prepare an assembly fixture with four assembly center shafts. The through holes  515  on each plate with optical elements and glass lens arrays are inserted by the assembly center shafts (not shown in figure) of the assembly fixture. And each plate with optical elements and glass lens arrays are overlapped and assembled sequentially with one another by UV-curing glue. After being radiated in a UV oven, separate the assembly fixture, a glass lens array module with 16 camera lenses is obtained. Then the glass lens array module is assembled with the circuit board  36  welded with 16 optical sensors  56  correspondingly and is cut by laser to form 16 camera lenses. 
     Embodiment 7 
     Refer to  FIG. 11  and  FIG. 12 , a glass lens array module of the embodiment is applied to mobile phone camera lenses. The manufacturing processes and functions of the embodiment are similar to those of the embodiment six. However, the present embodiment provides an alignment spacer  61  instead of the spacer  57  in the embodiment six. An alignment rod  611  corresponding to through hole of the glass lens array and each optical element is disposed on each of four corners of the alignment spacer  61 . The alignment spacer  61  replaces the assembly fixture and the assembly center shafts in the embodiment six. Thus while assembling, through holes of each plate with optical elements and the glass lens array are inserted by the alignment rods  611  and then overlapped and glued in sequence for assembly and alignment. 
     Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.