Patent Publication Number: US-11653077-B2

Title: Camera module and electronic device

Description:
RELATED APPLICATIONS 
     The present application is a continuation of the application Ser. No. 17/024,988, filed Sep. 18, 2020, which claims priority to Taiwan Application Serial Number 109105900, filed Feb. 24, 2020, which is herein incorporated by reference. 
    
    
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a camera module. More particularly, the present disclosure relates to a camera module applicable to portable electronic devices. 
     Description of Related Art 
     In recent years, portable electronic devices have developed rapidly. For example, intelligent electronic devices and tablets have been filled in the lives of modern people, and camera modules mounted on portable electronic devices have also prospered. However, as technology advances, the quality requirements of the camera modules are becoming higher and higher. Therefore, a camera module, which the focusing distance can be shortened, needs to be developed. 
     SUMMARY 
     According to one aspect of the present disclosure, a camera module includes an imaging lens assembly, an image sensor, a first reflecting member and a first driving apparatus. The imaging lens assembly is for converging an imaging light on an image surface. The image sensor is disposed on the image surface. The first reflecting member is located on an image side of the imaging lens assembly, the first reflecting member is for folding the imaging light, and has a first translational degree of freedom. The first reflecting member is assembled on the first driving apparatus, and the first driving apparatus is for driving the first reflecting member moving along the first translational degree of freedom. When the first reflecting member is close to the imaging lens assembly, the first reflecting member is simultaneously close to the image sensor; when the first reflecting member is away from the imaging lens assembly, the first reflecting member is simultaneously away from the image sensor. 
     According to one aspect of the present disclosure, an electronic device includes the camera module of the aforementioned aspect. 
     According to one aspect of the present disclosure, a camera module includes an imaging lens assembly, an image sensor, a first reflecting member and a first driving apparatus. The imaging lens assembly is for converging an imaging light on an image surface. The image sensor is disposed on the image surface. The first reflecting member is located on an image side of the imaging lens assembly, and the first reflecting member is for folding the imaging light. The first reflecting member is assembled on the first driving apparatus, and the first driving apparatus includes a supporting member, a moving holder, at least two magnets and at least two magnetic members. The first reflecting member is assembled on the moving holder, and the first reflecting member relatively moves between the moving holder and the supporting member. The magnets are disposed on the moving holder. The magnetic members are disposed on the supporting member, and the magnetic members are corresponding to the magnets. A magnetic force is formed between the magnets and the magnetic members. The first reflecting member includes at least two reflecting surfaces. The reflecting surfaces, the magnetic members and the magnets are symmetrical arranged, and the reflecting surfaces, the magnets and the magnetic members are symmetrical arranged along a symmetry axis, respectively. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1 A  is a schematic view of an electronic device according to the 1st example of the present disclosure. 
         FIG.  1 B  is a schematic view of a camera module according to the 1st example in  FIG.  1 A . 
         FIG.  10    is a partially schematic view of the camera module according to the 1st example in  FIG.  1 A . 
         FIG.  1 D  is an exploded schematic view of the first reflecting member, the first driving apparatus and the second driving apparatus according to the 1st example in  FIG.  1 A . 
         FIG.  1 E  is a top view of the camera module according to the 1st example in  FIG.  1 A . 
         FIG.  1 F  is a schematic view of a rotational degree of freedom of the third reflecting member according to the 1st example in  FIG.  1 A . 
         FIG.  1 G  is a schematic view of parameters of the first reflecting member according to the 1st example in  FIG.  1 A . 
         FIG.  2 A  is a schematic view of an electronic device according to the 2nd example of the present disclosure. 
         FIG.  2 B  is a schematic view of a camera module according to the 2nd example in  FIG.  2 A . 
         FIG.  2 C  is a partially schematic view of the camera module according to the 2nd example in  FIG.  2 A . 
         FIG.  2 D  is an exploded schematic view of the first reflecting member, the first driving apparatus and the second driving apparatus according to the 2nd example in  FIG.  2 A . 
         FIG.  2 E  is a top view of the camera module according to the 2nd example in  FIG.  2 A . 
         FIG.  2 F  is a schematic view of the rotational degree of freedom of the second reflecting member according to the 2nd example in  FIG.  2 A . 
         FIG.  2 G  is a schematic view of parameters of the first reflecting member according to the 2nd example in  FIG.  2 A . 
         FIG.  3 A  is a schematic view of an electronic device according to the 3rd example of the present disclosure. 
         FIG.  3 B  is a schematic view of a camera module according to the 3rd example in  FIG.  3 A . 
         FIG.  3 C  is a partially schematic view of the camera module according to the 3rd example in  FIG.  3 A . 
         FIG.  3 D  is an exploded schematic view of the first reflecting member and the first driving apparatus according to the 3rd example in  FIG.  3 A . 
         FIG.  3 E  is a top view of the camera module according to the 3rd example in  FIG.  3 A . 
         FIG.  3 F  is a schematic view of the rotational degree of freedom of the second reflecting member according to the 3rd example in  FIG.  3 A . 
         FIG.  3 G  is a schematic view of parameters of the first reflecting member according to the 3rd example in  FIG.  3 A . 
         FIG.  4 A  is a schematic view of an electronic device according to the 4th example of the present disclosure. 
         FIG.  4 B  is another schematic view of the electronic device according to the 4th example in  FIG.  4 A . 
         FIG.  4 C  is a block diagram of the electronic device according to the 4th example in  FIG.  4 A . 
         FIG.  4 D  is a schematic view of an image shot via the ultra-wide angle camera module according to the 4th example in  FIG.  4 A . 
         FIG.  4 E  is a schematic view of an image shot via the high resolution camera module according to the 4th example in  FIG.  4 A . 
         FIG.  4 F  is a schematic view of an image shot via the telephoto camera module according to the 4th example in  FIG.  4 A . 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure provides a camera module, and the camera module includes an imaging lens assembly, an image sensor, a first reflecting member and a first driving apparatus. The imaging lens assembly is for converging an imaging light on an image surface. The image sensor is disposed on the image surface. The first reflecting member is located on an image side of the imaging lens assembly, and the first reflecting member is for folding the imaging light. The first reflecting member is assembled on the first driving apparatus. Therefore, the camera module for driving the first reflecting member can be provided, and it is favorable for shortening an operation distance of the first driving apparatus to more quickly control the image. 
     The first reflecting member can have two translational degrees of freedom, and the translational degrees of freedom are substantially orthogonal, wherein each of the translational degrees of freedom can be a first translational degree of freedom and a second translational degree of freedom. That is, the first translational degree of freedom and the second translational degree of freedom are substantially orthogonal. In particular, the first reflecting member having the first translational degree of freedom is regarded that the first reflecting member can move along a specific direction at a specific surface. Therefore, the moving ability of the first reflecting member at the two-dimensional surface can be provided, and the imaging light can be more flexibly controlled. 
     The first driving apparatus can be for driving the first reflecting member moving along the first translational degree of freedom, wherein the first driving apparatus has the functions of the autofocus and the optical image stabilization, and a driving displacement of the first reflecting member along the first translational degree of freedom is smaller than a variation of back focal length of the camera module. Furthermore, the first driving apparatus can be at least one of an autofocus driving apparatus and an optical image stabilization driving apparatus, and the imaging lens assembly can be a telephoto lens assembly with long focal length. The entire space can be reduced via the first reflecting member to obtain the more efficient space application, and the feasibility of the compact size of the camera module can be provided. 
     When the first reflecting member is close to the imaging lens assembly, the first reflecting member is simultaneously close to the image sensor; when the first reflecting member is away from the imaging lens assembly, the first reflecting member is simultaneously away from the image sensor. It should be mentioned that the long-driving-path function is hardly obtained when the telephoto lens assembly has the higher focal variations. Therefore, the present disclosure is favorable for solving the aforementioned problem, that is, the focusable range of the telephoto lens assembly can be widened. 
     The first driving apparatus can include a supporting member, a moving holder, at least one magnet and at least one magnetic member. Moreover, the first driving apparatus can include at least two magnets and at least two magnetic members, but is not limited thereto. The first reflecting member is assembled on the moving holder, and the first reflecting member relatively moves between the supporting member and the moving holder. The magnets are disposed on the moving holder. The magnetic members are disposed on the supporting member, and the magnetic members are corresponding to the magnets. A magnetic force is formed between the magnets and the magnetic members. In detail, the magnetic force between the magnets and the magnetic members is a force attracting each other. Therefore, the preloading force between the moving holder and the supporting member can be provided, and it is favorable for enhancing the structural stability of the first driving apparatus. 
     The first reflecting member can include at least two reflecting surfaces, and the reflecting surfaces move towards a same direction via the first driving apparatus. Therefore, the volume of the camera module can be substantially reduced via the structure of secondary reflection. 
     Both of a number of the magnetic members and a number of the magnets can be at least two, the reflecting surfaces, the magnetic members and the magnets are symmetrical arranged, and the reflecting surfaces, the magnetic members and the magnets are symmetrical arranged along a symmetry axis, respectively. Therefore, the assembling difficulty of the camera module can be simplified, and the skew situation during the assembly and the production of the camera module can be avoided to promote the production yield rate of the entire camera module. 
     A groove can be included between the supporting member and the moving holder, the groove extends along the first translational degree of freedom, and a rolling member is disposed on the groove. Therefore, the skew situation caused by the first driving apparatus can be improved to increase the linear stability of the movement. 
     The first driving apparatus can include a coil, and a driving force is formed along the first translational degree of freedom via the coil with the magnets. Therefore, the autofocus function of the camera module can be obtained. 
     The camera module can further include a second driving apparatus, and the second driving apparatus is for driving the first reflecting member moving along the second translational degree of freedom. Therefore, it is favorable for obtaining the optical image stabilization. 
     The camera module can further include a second reflecting member and a third driving apparatus, wherein the second reflecting member has a rotational degree of freedom, and the third driving apparatus is for driving the second reflecting member rotating along the rotational degree of freedom. Therefore, the optical image stabilization of the camera module in another dimension can be obtained. 
     The first reflecting member can include an incident surface and an exiting surface, and at least one of the incident surface and the exiting surface has an aspheric surface. Therefore, the first reflecting member can have refractive power to compensate optical aberrations. 
     Each of the imaging lens assembly and the image sensor can have a fixed relative position, and the first reflecting member moves correspondingly to the imaging lens assembly and the image sensor. Therefore, it is favorable for lowering the complexity of the assembling process and enhancing the assembling efficiency. 
     The camera module can further include a third reflecting member, the third reflecting member has the rotational degree of freedom, and the third driving apparatus is for driving the third reflecting member rotating along the rotational degree of freedom. Therefore, the optical image stabilization of the camera module in another dimension can be obtained. 
     When a refractive index of the first reflecting member at d-line is N, the following condition can be satisfied: 1.66≤N&lt;2.5. Moreover, the first reflecting member can be made of a plastic material or a glass material. Therefore, increasing the range of the reflecting angle is favorable for reducing the volume of the first reflecting member. Further, the following condition can be satisfied: 1.70≤N&lt;2.5. 
     When a thickness of the first reflecting member is H, the following condition can be satisfied: 3.00 mm H 10.00 mm. The aforementioned range is the thickness range that the imaging light can be stabilized via the first reflecting member in the limited space. Therefore, the superior optical quality of the camera module of the compact size can be obtained. 
     When a length of the camera module is L, and a width of the camera module is W, the following condition can be satisfied: 0.7&lt;L/W&lt;3.5. Moreover, the calculation of the length of the camera module is according to the direction of the optical axis of the imaging lens assembly, and the calculation of the width of the camera module is according to the direction vertical to the optical axis. Therefore, it is favorable for shortening the proportional range of the elongated telephoto camera module. Further, the following condition can be satisfied: 0.8&lt;L/W&lt;2.5. Therefore, the proportional range of the entire volume of the telephoto camera module can be further reduced. 
     Each of the aforementioned features of the camera module can be utilized in various combinations for achieving the corresponding effects. 
     The present disclosure provides an electronic device, which includes the aforementioned camera module. 
     According to the aforementioned embodiment, specific examples are provided, and illustrated via figures. 
     1st Example 
       FIG.  1 A  is a schematic view of an electronic device  10  according to the 1st example of the present disclosure.  FIG.  1 B  is a schematic view of a camera module  100  according to the 1st example in  FIG.  1 A . In  FIGS.  1 A and  1 B , the electronic device  10  includes the camera module  100 , and the camera module  100  includes an imaging lens assembly  110 , an image sensor  120 , a first reflecting member  130 , a first driving apparatus  140  (as shown in  FIG.  1 D ), a second driving apparatus  170  (as shown in  FIG.  1 D ), a second reflecting member  150 , a third driving apparatus  180  (as shown in  FIG.  1 F ) and a third reflecting member  160 , wherein the third driving apparatus  180  is an image-side driving apparatus, the second reflecting member  150  is an object-side reflecting member, and the third reflecting member  160  is an image-side reflecting member. The first driving apparatus  140  can be at least one of an autofocus driving apparatus and an optical image stabilization driving apparatus, and the imaging lens assembly  110  can be a telephoto lens assembly with long focal length, but are not limited thereto. 
     The imaging lens assembly  110  is for converging an imaging light on an image surface (its reference numeral is omitted), and the image sensor  120  is disposed on the image surface. The first reflecting member  130  is located on an image side of the imaging lens assembly  110 , assembled on the first driving apparatus  140 , and for folding the imaging light. In detail, the imaging light enters the camera module  100  from an incident surface (its reference numeral is omitted) of the second reflecting member  150 , and the imaging light is converged on the image surface via the imaging lens assembly  110 . The first driving apparatus  140  has the function of the autofocus, and the second driving apparatus  170  and the third driving apparatus  180  have the function of the optical image stabilization. 
     In  FIG.  1 B , each of the imaging lens assembly  110  and the image sensor  120  has a fixed relative position, and the first reflecting member  130  moves correspondingly to the imaging lens assembly  110  and the image sensor  120 . Therefore, it is favorable for lowering the complexity of the assembling process and enhancing the assembling efficiency. 
     Furthermore, when the first reflecting member  130  is close to the imaging lens assembly  110 , the first reflecting member  130  is simultaneously close to the image sensor  120 ; when the first reflecting member  130  is away from the imaging lens assembly  110 , the first reflecting member  130  is simultaneously away from the image sensor  120 . In particular, the camera module  100  for driving the first reflecting member  130  can be provided via the present disclosure, and it is favorable for shortening an operation distance of the first driving apparatus  140 , the second driving apparatus  170  and the third driving apparatus  180  to more quickly control the image. 
     The entire space can be reduced via the first reflecting member  130  to obtain the more efficient space application, and the feasibility of the compact size of the camera module  100  can be provided. It should be mentioned that the long-driving-path function is hardly obtained when the telephoto lens assembly has the higher focal variations. Therefore, the present disclosure is favorable for solving the aforementioned problem, that is, the focusable range of the telephoto lens assembly can be widened. 
       FIG.  1 C  is a partially schematic view of the camera module  100  according to the 1st example in  FIG.  1 A . In  FIG.  10   , the first reflecting member  130  includes an incident surface A, an exiting surface B and at least two reflecting surfaces  131  (as shown in  FIG.  1 E ), wherein the imaging light can be folded from the incident surface A to the exiting surface B, and the reflecting surfaces  131  move towards a same direction via the first driving apparatus  140 . Therefore, the volume of the camera module  100  can be substantially reduced via the structure of secondary reflection. In detail, the first reflecting member  130  can be made of a plastic material or a glass material. According to the 1st example, the first reflecting member  130  is made of the plastic material, but is not limited thereto. Therefore, the camera module  100  has the design flexibility under the consideration of optical design, and it is favorable for developing the plastic material with high refractivity and lowering the developing threshold of the optical element with double reflecting surface. 
     The first driving apparatus  140  can include a supporting member  141 , a moving holder  142 , at least one magnet, at least one magnetic member, a coil, a plurality of rolling members and a holder  147 .  FIG.  1 D  is an exploded schematic view of the first reflecting member  130 , the first driving apparatus  140  and the second driving apparatus  170  according to the 1st example in  FIG.  1 A . In  FIG.  1 D , according to the 1st example, the first driving apparatus  140  includes the supporting member  141 , the moving holder  142 , a first magnet  143 , a first magnetic member  144 , first coils  145 , first rolling members  146  and the holder  147 , and the second driving apparatus  170  includes a second magnet  171 , a second magnetic member  172 , second coils  173  and second rolling members  174 . 
     According to the 1st example, a number of the first magnets  143  is two, a number of the first magnetic members  144  is two, a number of the first coils  145  is two, a number of the first rolling members  146  is four, a number of the second magnets  171  is two, a number of the second magnetic members  172  is two, a number of the second coils  173  is two, a number of the second rolling members  174  is four, but are not limited thereto. 
     In detail, the first reflecting member  130  is assembled on the moving holder  142 , and the first reflecting member  130  relatively moves between the moving holder  142  and the supporting member  141 . The magnets are disposed on the moving holder  142 . The magnetic members are disposed on the supporting member  141 , and the magnetic members are corresponding to the magnets. A magnetic force is formed between the magnets and the magnetic members. According to the 1st example, each of the first magnets  143  and the second magnets  171  is disposed on the moving holder  142  and the supporting member  141 , each of the first magnetic members  144  and the second magnetic members  172  is disposed on the supporting member  141  and the holder  147 , the first magnets  143  are corresponding to the first magnetic members  144 , and the second magnets  171  are corresponding to the second magnetic members  172 . The magnetic force is formed between the first magnets  143  and the first magnetic members  144 , and the magnetic force is formed between the second magnets  171  and the second magnetic members  172 . Both of the magnetic force between the first magnets  143  and the first magnetic members  144  and the magnetic force between the second magnets  171  and the second magnetic members  172  are the forces attracting each other. Therefore, the preloading force between the moving holder  142  and the supporting member  141  can be provided, and it is favorable for enhancing the structural stability of the first driving apparatus  140  and the second driving apparatus  170 . 
       FIG.  1 E  is a top view of the camera module  100  according to the 1st example in  FIG.  1 A . In  FIGS.  1 D and  1 E , each of the first driving apparatus  140  and the second driving apparatus  170  is for driving the first reflecting member  130  moving along two translational degrees of freedom, and each of the translational degrees of freedom is a first translational degree of freedom F 1  and a second translational degree of freedom F 2 . Therefore, it is favorable for obtaining the optical image stabilization of the camera module  100 . In particular, the degree of freedom can include surge, sway, heave, pitch, yaw and roll, wherein surge, sway and heave are classified as the translational degree of freedom, and pitch, yaw and roll are classified as the rotational degree of freedom. 
     In detail, the first reflecting member  130  has the first translational degree of freedom F 1 , and the first driving apparatus  140  is for driving the first reflecting member  130  moving along the first translational degree of freedom F 1 . That is, the first reflecting member  130  can move along the specific direction at the specific surface, and the driving displacement of the first reflecting member  130  along the first translational degree of freedom F 1  is smaller than a variation of back focal length of the camera module  100 . Furthermore, the first translational degree of freedom F 1  is provided between the supporting member  141  and the moving holder  142 , and a driving force is formed along the first translational degree of freedom F 1  via the coil with the magnets. According to the 1st example, the driving force is formed along the first translational degree of freedom F 1  via the first coil  145  with the first magnets  143 . Therefore, the autofocus function of the camera module  100  can be obtained. 
     The first reflecting member  130  has the second translational degree of freedom F 2 , and the first translational degree of freedom F 1  and the second translational degree of freedom F 2  are substantially orthogonal. Therefore, the moving ability of the first reflecting member  130  at the two-dimensional surface can be provided, and the imaging light can be more flexibly controlled. Moreover, the second translational degree of freedom F 2  is provided between the supporting member  141  and the holder  147 , and the second driving apparatus  170  is for driving the first reflecting member  130  moving along the second translational degree of freedom F 2 . Therefore, it is favorable for obtaining the optical image stabilization. 
     In  FIGS.  1 D and  1 E , a groove can be included between the supporting member  141  and the moving holder  142 . According to the 1st example, grooves  141   a  are included between the supporting member  141  and the moving holder  142 , and grooves  141   b  are included between the supporting member  141  and the holder  147 . According to the 1st example, a number of the grooves  141   a  is four, and a number of the grooves  141   b  is four, but are not limited thereto. 
     Furthermore, the grooves  141   a  extend along the first translational degree of freedom F 1 , the grooves  141   b  extend along the second translational degree of freedom F 2 , and each of the rolling members is disposed on each of the grooves  141   a ,  141   b . According to the 1st example, each of the first rolling members  146  is disposed on each of the grooves  141   a , and each of the second rolling members  174  is disposed on each of the grooves  141   b . Therefore, the skew situation caused by the first driving apparatus  140  and the second driving apparatus  170  can be improved to increase the linear stability of the movement. 
     In  FIG.  1 E , the reflecting surfaces  131 , the magnetic members and the magnets are symmetrical arranged, and the reflecting surfaces  131 , the magnetic members and the magnets are symmetrical arranged along a symmetry axis X, respectively. According to the 1st example, the reflecting surfaces  131 , the first magnets  143 , the first magnetic members  144 , the second magnets  171  and the second magnetic members  172  are symmetrical arranged, and the reflecting surfaces  131 , the first magnets  143 , the first magnetic members  144 , the second magnets  171  and the second magnetic members  172  are symmetrical arranged along the symmetry axis X, respectively. Therefore, the assembling difficulty of the camera module  100  can be simplified, and the skew situation during the assembly and the production of the camera module  100  can be avoided to promote the production yield rate of the entire camera module  100 . 
       FIG.  1 F  is a schematic view of a rotational degree of freedom R of the third reflecting member  160  according to the 1st example in  FIG.  1 A . In  FIG.  1 F , the third reflecting member  160  has the rotational degree of freedom R, and the third driving apparatus  180  is for driving the third reflecting member  160  rotating along the rotational degree of freedom R. In particular, the third driving apparatus  180  is for driving the third reflecting member  160  rotating along the axis vertical to the incident light path and the exit light path. Therefore, the optical image stabilization of the camera module  100  in another dimension can be obtained. 
       FIG.  1 G  is a schematic view of parameters of the first reflecting member  130  according to the 1st example in  FIG.  1 A . In  FIGS.  1 A and  1 G , according to the 1st example, when a refractive index of the first reflecting member  130  at d-line is N, a wavelength of d-line is 587.6 nm, a thickness of the first reflecting member  130  is H, a length of the camera module  100  is L, and a width of the camera module  100  is W, the following conditions of the Table 1 are satisfied. 
     
       
         
           
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 1st example 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 N 
                 1.73 
                 W (mm) 
                 19.8 
               
               
                   
                 H (mm) 
                 4.5 
                 L/W 
                 1.16 
               
               
                   
                 L (mm) 
                 23.0 
               
               
                   
                   
               
            
           
         
       
     
     2nd Example 
       FIG.  2 A  is a schematic view of an electronic device  20  according to the 2nd example of the present disclosure.  FIG.  2 B  is a schematic view of a camera module  200  according to the 2nd example in  FIG.  2 A . In  FIGS.  2 A and  2 B , the electronic device  20  includes the camera module  200 , and the camera module  200  includes an imaging lens assembly  210 , an image sensor  220 , a first reflecting member  230 , a first driving apparatus  240  (as shown in  FIG.  2 D ), a second driving apparatus  270  (as shown in  FIG.  2 D ), a second reflecting member  250  and a third driving apparatus (not shown), wherein the third driving apparatus is an object-side driving apparatus, and the second reflecting member  250  is an object-side reflecting member. The first driving apparatus  240  can be at least one of an autofocus driving apparatus and an optical image stabilization driving apparatus, and the imaging lens assembly  210  can be a telephoto lens assembly with long focal length, but are not limited thereto. 
     The imaging lens assembly  210  is for converging an imaging light on an image surface (not shown), and the image sensor  220  is disposed on the image surface. The first reflecting member  230  is located on an image side of the imaging lens assembly  210 , assembled on the first driving apparatus  240 , and for folding the imaging light. In detail, the imaging light enters the camera module  200  from an incident surface (its reference numeral is omitted) of the second reflecting member  250 , and the imaging light is converged on the image surface via the imaging lens assembly  210 . The first driving apparatus  240  has the function of the autofocus, and the second driving apparatus  270  and the third driving apparatus have the function of the optical image stabilization. 
     In  FIG.  2 B , each of the imaging lens assembly  210  and the image sensor  220  has a fixed relative position, and the first reflecting member  230  moves correspondingly to the imaging lens assembly  210  and the image sensor  220 . Therefore, it is favorable for lowering the complexity of the assembling process and enhancing the assembling efficiency. 
     Furthermore, when the first reflecting member  230  is close to the imaging lens assembly  210 , the first reflecting member  230  is simultaneously close to the image sensor  220 ; when the first reflecting member  230  is away from the imaging lens assembly  210 , the first reflecting member  230  is simultaneously away from the image sensor  220 . In particular, the camera module  200  for driving the first reflecting member  230  can be provided via the present disclosure, and it is favorable for shortening an operation distance of the first driving apparatus  240 , the second driving apparatus  270  and the third driving apparatus to more quickly control the image. 
     The entire space can be reduced via the first reflecting member  230  to obtain the more efficient space application, and the feasibility of the compact size of the camera module  200  can be provided. It should be mentioned that the long-driving-path function is hardly obtained when the telephoto lens assembly has the higher focal variations. Therefore, the present disclosure is favorable for solving the aforementioned problem, that is, the focusable range of the telephoto lens assembly can be widened. 
       FIG.  2 C  is a partially schematic view of the camera module  200  according to the 2nd example in  FIG.  2 A . In  FIG.  2 C , the first reflecting member  230  includes an incident surface A, an exiting surface B and at least two reflecting surfaces  231  (as shown in  FIG.  2 E ), wherein the imaging light can be folded from the incident surface A to the exiting surface B, and the reflecting surfaces  231  move towards a same direction via the first driving apparatus  240 . Therefore, the volume of the camera module  200  can be substantially reduced via the structure of secondary reflection. In detail, the first reflecting member  230  can be made of a plastic material or a glass material. According to the 2nd example, the first reflecting member  230  is made of the glass material, but is not limited thereto. 
     The first driving apparatus  240  can include a supporting member  241 , a moving holder  242 , at least one magnet, at least one magnetic member, a coil, a plurality of rolling members and a holder  247 .  FIG.  2 D  is an exploded schematic view of the first reflecting member  230 , the first driving apparatus  240  and the second driving apparatus  270  according to the 2nd example in  FIG.  2 A . In  FIG.  2 D , according to the 2nd example, the first driving apparatus  240  includes the supporting member  241 , the moving holder  242 , a first magnet  243 , a first magnetic member  244 , first coils  245 , first rolling members  246  and the holder  247 , and the second driving apparatus  270  includes a second magnet  271 , a second magnetic member  272 , second coils  273  and second rolling members  274 . 
     According to the 2nd example, a number of the first magnets  243  is two, a number of the first magnetic members  244  is two, a number of the first coils  245  is two, a number of the first rolling members  246  is four, a number of the second magnets  271  is two, a number of the second magnetic members  272  is two, a number of the second coils  273  is two, a number of the second rolling members  274  is four, but are not limited thereto. 
     In detail, the first reflecting member  230  is assembled on the moving holder  242 , and the first reflecting member  230  relatively moves between the supporting member  241  and the moving holder  242 . The magnets are disposed on the moving holder  242 . The magnetic members are disposed on the supporting member  241 , and the magnetic members are corresponding to the magnets. A magnetic force is formed between the magnets and the magnetic members. According to the 2nd example, each of the first magnets  243  and the second magnets  271  is disposed on the supporting member  241  and the moving holder  242 , each of the first magnetic members  244  and the second magnetic members  272  is disposed on the holder  247  and the supporting member  241 , the first magnets  243  are corresponding to the first magnetic members  244 , and the second magnets  271  are corresponding to the second magnetic members  272 . The magnetic force is formed between the first magnets  243  and the first magnetic members  244 , and the magnetic force is formed between the second magnets  271  and the second magnetic members  272 . Both of the magnetic force between the first magnets  243  and the first magnetic members  244  and the magnetic force between the second magnets  271  and the second magnetic members  272  are the forces attracting each other. Therefore, the preloading force between the moving holder  242  and the supporting member  241  can be provided, and it is favorable for enhancing the structural stability of the first driving apparatus  240  and the second driving apparatus  270 . 
       FIG.  2 E  is a top view of the camera module  200  according to the 2nd example in  FIG.  2 A . In  FIGS.  2 D and  2 E , each of the first driving apparatus  240  and the second driving apparatus  270  is for driving the first reflecting member  230  moving along two translational degrees of freedom, and each of the translational degrees of freedom is a first translational degree of freedom F 1  and a second translational degree of freedom F 2 . Therefore, it is favorable for obtaining the optical image stabilization of the camera module  200 . In particular, the degree of freedom can include surge, sway, heave, pitch, yaw and roll, wherein surge, sway and heave are classified as the translational degree of freedom, and pitch, yaw and roll are classified as the rotational degree of freedom. 
     In detail, the first reflecting member  230  has the first translational degree of freedom F 1 , and the first driving apparatus  240  is for driving the first reflecting member  230  moving along the first translational degree of freedom F 1 . That is, the first reflecting member  230  can move along the specific direction at the specific surface, and the driving displacement of the first reflecting member  230  along the first translational degree of freedom F 1  is smaller than a variation of back focal length of the camera module  200 . Furthermore, the first translational degree of freedom F 1  is provided between the supporting member  241  and the holder  247 , and a driving force is formed along the first translational degree of freedom F 1  via the coil with the magnets. According to the 2nd example, the driving force is formed along the first translational degree of freedom F 1  via the first coil  245  with the first magnets  243 . Therefore, the autofocus function of the camera module  200  can be obtained. 
     The first reflecting member  230  has the second translational degree of freedom F 2 , and the first translational degree of freedom F 1  and the second translational degree of freedom F 2  are substantially orthogonal. Therefore, the moving ability of the first reflecting member  230  at the two-dimensional surface can be provided, and the imaging light can be more flexibly controlled. Moreover, the second translational degree of freedom F 2  is provided between the supporting member  241  and the moving holder  242 , and the second driving apparatus  270  is for driving the first reflecting member  230  moving along the second translational degree of freedom F 2 . Therefore, it is favorable for obtaining the optical image stabilization. 
     In  FIGS.  2 D and  2 E , a groove can be included between the supporting member  241  and the moving holder  242 . According to the 2nd example, grooves  241   a  are included between the supporting member  241  and the moving holder  242 , and grooves  241   b  are included between the supporting member  241  and the holder  247 . According to the 2nd example, a number of the grooves  241   a  is four, and a number of the grooves  241   b  is four, but are not limited thereto. 
     Furthermore, the grooves  241   b  extend along the first translational degree of freedom F 1 , the grooves  241   a  extend along the second translational degree of freedom F 2 , and each of the rolling members is disposed on each of the grooves  241   a ,  241   b . According to the 2nd example, each of the first rolling members  246  is disposed on each of the grooves  241   b , and each of the second rolling members  274  is disposed on each of the grooves  241   a . Therefore, the skew situation caused by the first driving apparatus  240  and the second driving apparatus  270  can be improved to increase the linear stability of the movement. 
     In  FIG.  2 E , the reflecting surfaces  231 , the magnetic members and the magnets are symmetrical arranged, and the reflecting surfaces  231 , the magnetic members and the magnets are symmetrical arranged along a symmetry axis X, respectively. According to the 2nd example, the reflecting surfaces  231 , the first magnets  243 , the first magnetic members  244 , the second magnets  271  and the second magnetic members  272  are symmetrical arranged, and the reflecting surfaces  231 , the first magnets  243 , the first magnetic members  244 , the second magnets  271  and the second magnetic members  272  are symmetrical arranged along the symmetry axis X, respectively. Therefore, the assembling difficulty of the camera module  200  can be simplified, and the skew situation during the assembly and the production of the camera module  200  can be avoided to promote the production yield rate of the entire camera module  200 . 
     Moreover, an angle θ is between the incident surface A and the symmetry axis X and between the exiting surface B and the symmetry axis X, respectively. Further, the angle θ is 45 degrees, but is not limited thereto. 
       FIG.  2 F  is a schematic view of the rotational degree of freedom R of the second reflecting member  250  according to the 2nd example in  FIG.  2 A . In  FIG.  2 F , the second reflecting member  250  has the rotational degree of freedom R, and the third driving apparatus is for driving the second reflecting member  250  rotating along the rotational degree of freedom R. In particular, the third driving apparatus is for driving the second reflecting member  250  rotating along the axis vertical to the incident light path and the exit light path. Therefore, the optical image stabilization of the camera module  200  in another dimension can be obtained. 
       FIG.  2 G  is a schematic view of parameters of the first reflecting member  230  according to the 2nd example in  FIG.  2 A . In  FIGS.  2 A and  2 G , according to the 2nd example, when a refractive index of the first reflecting member  230  at d-line is N, a wavelength of d-line is 587.6 nm, a thickness of the first reflecting member  230  is H, a length of the camera module  200  is L, and a width of the camera module  200  is W, the following conditions of the Table 2 are satisfied. 
     
       
         
           
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 2nd example 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 N 
                 1.95 
                 W (mm) 
                 21.0 
               
               
                   
                 H (mm) 
                 5.0 
                 L/W 
                 1.64 
               
               
                   
                 L (mm) 
                 34.5 
               
               
                   
                   
               
            
           
         
       
     
     3rd Example 
       FIG.  3 A  is a schematic view of an electronic device  30  according to the 3rd example of the present disclosure.  FIG.  3 B  is a schematic view of a camera module  300  according to the 3rd example in  FIG.  3 A . In  FIGS.  3 A and  3 B , the electronic device  30  includes the camera module  300 , and the camera module  300  includes an imaging lens assembly  310 , an image sensor  320 , a first reflecting member  330 , a first driving apparatus  340 , a second reflecting member  350  and a third driving apparatus (not shown), wherein the third driving apparatus is an object-side driving apparatus, and the second reflecting member  350  is an object-side reflecting member. The first driving apparatus  340  can be at least one of an autofocus driving apparatus and an optical image stabilization driving apparatus, and the imaging lens assembly  310  can be a telephoto lens assembly with long focal length, but are not limited thereto. 
     The imaging lens assembly  310  is for converging an imaging light on an image surface (not shown), and the image sensor  320  is disposed on the image surface. The first reflecting member  330  is located on an image side of the imaging lens assembly  310 , assembled on the first driving apparatus  340 , and for folding the imaging light. In detail, the imaging light enters the camera module  300  from an incident surface (its reference numeral is omitted) of the second reflecting member  350 , and the imaging light is converged on the image surface via the imaging lens assembly  310 . The first driving apparatus  340  has the function of the autofocus, and the third driving apparatus have the function of the optical image stabilization. 
     In  FIG.  3 B , each of the imaging lens assembly  310  and the image sensor  320  has a fixed relative position, and the first reflecting member  330  moves correspondingly to the imaging lens assembly  310  and the image sensor  320 . Therefore, it is favorable for lowering the complexity of the assembling process and enhancing the assembling efficiency. 
     Furthermore, when the first reflecting member  330  is close to the imaging lens assembly  310 , the first reflecting member  330  is simultaneously close to the image sensor  320 ; when the first reflecting member  330  is away from the imaging lens assembly  310 , the first reflecting member  330  is simultaneously away from the image sensor  320 . In particular, the camera module  300  for driving the first reflecting member  330  can be provided via the present disclosure, and it is favorable for shortening an operation distance of the first driving apparatus  340  and the third driving apparatus to more quickly control the image. 
     The entire space can be reduced via the first reflecting member  330  to obtain the more efficient space application, and the feasibility of the compact size of the camera module  300  can be provided. It should be mentioned that the long-driving-path function is hardly obtained when the telephoto lens assembly has the higher focal variations. Therefore, the present disclosure is favorable for solving the aforementioned problem, that is, the focusable range of the telephoto lens assembly can be widened. 
       FIG.  3 C  is a partially schematic view of the camera module  300  according to the 3rd example in  FIG.  3 A . In  FIG.  3 C , the first reflecting member  330  includes an incident surface A, an exiting surface B and at least two reflecting surfaces  331  (as shown in  FIG.  3 E ), wherein the imaging light can be folded from the incident surface A to the exiting surface B, and the reflecting surfaces  331  move towards a same direction via the first driving apparatus  340 . Therefore, the volume of the camera module  300  can be substantially reduced via the structure of secondary reflection. In detail, the first reflecting member  330  can be made of a plastic material or a glass material. According to the 3rd example, the first reflecting member  330  is made of the plastic material, but is not limited thereto. Therefore, the camera module  300  has the design flexibility under the consideration of optical design, and it is favorable for developing the plastic material with high refractivity and lowering the developing threshold of the optical element with double reflecting surface. 
     Furthermore, at least one of the incident surface A and the exiting surface B of the first reflecting member  330  has an aspheric surface. According to the 3rd example, both of the incident surface A and the exiting surface B have aspheric surfaces, but are not limited thereto. Therefore, the first reflecting member  330  can have refractive power to compensate optical aberrations. 
     The first driving apparatus  340  can include a supporting member  341 , a moving holder  342 , at least one magnet, at least one magnetic member, a coil and a plurality of rolling members.  FIG.  3 D  is an exploded schematic view of the first reflecting member  330  and the first driving apparatus  340  according to the 3rd example in  FIG.  3 A . In  FIG.  3 D , according to the 3rd example, the first driving apparatus  340  includes the supporting member  341 , the moving holder  342 , a first magnet  343 , a first magnetic member  344 , first coils  345  and first rolling members  346 , wherein the supporting member  341  also has the function of a holder. 
     According to the 3rd example, a number of the first magnets  343  is two, a number of the first magnetic members  344  is two, a number of the first coils  345  is two, a number of the first rolling members  346  is four, but are not limited thereto. 
     In detail, the first reflecting member  330  is assembled on the moving holder  342 , and the first reflecting member  330  relatively moves between the moving holder  342  and the supporting member  341 . The magnets are disposed on the moving holder  342 . The magnetic members are disposed on the supporting member  341 , and the magnetic members are corresponding to the magnets. A magnetic force is formed between the magnets and the magnetic members. According to the 3rd example, the first magnets  343  are disposed on the moving holder  342 , the first magnetic members  344  are disposed on the supporting member  341 , the first magnets  343  are corresponding to the first magnetic members  344 . The magnetic force is formed between the first magnets  343  and the first magnetic members  344 . The magnetic force between the first magnets  343  and the first magnetic members  344  is the forces attracting each other. Therefore, the preloading force between the moving holder  342  and the supporting member  341  can be provided, and it is favorable for enhancing the structural stability of the first driving apparatus  340 . 
       FIG.  3 E  is a top view of the camera module  300  according to the 3rd example in  FIG.  3 A . In  FIGS.  3 D and  3 E , the first driving apparatus  340  is for driving the first reflecting member  330  moving along a first translational degree of freedom F 1 . Therefore, it is favorable for obtaining the optical image stabilization of the camera module  300 . In particular, the degree of freedom can include surge, sway, heave, pitch, yaw and roll, wherein surge, sway and heave are classified as the translational degree of freedom, and pitch, yaw and roll are classified as the rotational degree of freedom. 
     In detail, the first reflecting member  330  has the first translational degree of freedom F 1 , and the first driving apparatus  340  is for driving the first reflecting member  330  moving along the first translational degree of freedom F 1 . That is, the first reflecting member  330  can move along the specific direction at the specific surface, and the driving displacement of the first reflecting member  330  along the first translational degree of freedom F 1  is smaller than a variation of back focal length of the camera module  300 . Furthermore, the first translational degree of freedom F 1  is provided between the supporting member  341  and the moving holder  342 , and a driving force is formed along the first translational degree of freedom F 1  via the coil with the magnets. According to the 3rd example, the driving force is formed along the first translational degree of freedom F 1  via the first coil  345  with the first magnets  343 . Therefore, the autofocus function of the camera module  300  can be obtained. 
     In  FIGS.  3 D and  3 E , a groove can be included between the supporting member  341  and the moving holder  342 . According to the 3rd example, grooves  341   a  are included between the supporting member  341  and the moving holder  342 . According to the 3rd example, a number of the grooves  341   a  is four, but is not limited thereto. 
     Furthermore, the grooves  341   a  extend along the first translational degree of freedom F 1 , and each of the rolling members is disposed on each of the grooves  341   a . According to the 3rd example, each of the first rolling members  346  is disposed on each of the grooves  341   a . Therefore, the skew situation caused by the first driving apparatus  340  can be improved to increase the linear stability of the movement. 
     In  FIG.  3 E , the reflecting surfaces  331 , the magnetic members and the magnets are symmetrical arranged, and the reflecting surfaces  331 , the magnetic members and the magnets are symmetrical arranged along a symmetry axis X, respectively. According to the 3rd example, the reflecting surfaces  331 , the first magnets  343  and the first magnetic members  344  are symmetrical arranged, and the reflecting surfaces  331 , the first magnets  343  and the first magnetic members  344  are symmetrical arranged along the symmetry axis X, respectively. Therefore, the assembling difficulty of the camera module  300  can be simplified, and the skew situation during the assembly and the production of the camera module  300  can be avoided to promote the production yield rate of the entire camera module  300 . 
       FIG.  3 F  is a schematic view of the rotational degree of freedom R of the second reflecting member  350  according to the 3rd example in  FIG.  3 A . In  FIG.  3 F , the second reflecting member  350  has the rotational degree of freedom R, and the third driving apparatus is for driving the second reflecting member  350  rotating along the rotational degree of freedom R. In particular, the third driving apparatus is for driving the second reflecting member  350  rotating along the axis vertical to the incident light path and the exit light path. Therefore, the optical image stabilization of the camera module  300  in another dimension can be obtained. 
       FIG.  3 G  is a schematic view of parameters of the first reflecting member  330  according to the 3rd example in  FIG.  3 A . In  FIGS.  3 A and  3 G , according to the 3rd example, when a refractive index of the first reflecting member  330  at d-line is N, a wavelength of d-line is 587.6 nm, a thickness of the first reflecting member  330  is H, a length of the camera module  300  is L, and a width of the camera module  300  is W, the following conditions of the Table 3 are satisfied. 
     
       
         
           
               
             
               
                 TABLE 3 
               
               
                   
               
               
                 3rd example 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 N 
                 1.68 
                 W (mm) 
                 15.6 
               
               
                   
                 H (mm) 
                 4.0 
                 L/W 
                 1.42 
               
               
                   
                 L (mm) 
                 22.2 
               
               
                   
                   
               
            
           
         
       
     
     4th Example 
       FIG.  4 A  is a schematic view of an electronic device  40  according to the 4th example of the present disclosure.  FIG.  4 B  is another schematic view of the electronic device  40  according to the 4th example in  FIG.  4 A . In  FIGS.  4 A and  4 B , the electronic device  40  is a smart phone, and includes a camera module  41  (as shown in  FIG.  4 C ), wherein the camera module  41  includes a ultra-wide angle camera module  41   a , a high resolution camera module  41   b  and a telephoto camera module  41   c , and the telephoto camera module  41   c  can be one of the camera modules according to the aforementioned 1st example to the 3rd example, but is not limited thereto. Therefore, it is favorable for satisfying the requirements of the mass production and the appearance of the camera modules mounted on the electronic devices according to the current marketplace of the electronic device. 
     Moreover, users enter a shooting mode via the user interface  42  of the electronic device  40 , wherein the user interface  42  according to the 4th example can be a touch screen for displaying the scene and have the touch function, and the shooting angle can be manually adjusted to switch the ultra-wide angle camera  41   a , the high resolution camera module  41   b  and the telephoto camera module  41   c . At this moment, the imaging light is gathered on the image sensor (not shown) via an imaging lens assembly (not shown) of the camera module  41 , and an electronic signal about an image is output to an image signal processor (ISP)  43 . 
       FIG.  4 C  is a block diagram of the electronic device  40  according to the 4th example in  FIG.  4 A . In  FIGS.  4 B and  4 C , to meet a specification of a camera of the electronic device  40 , the electronic device  40  can further include an optical anti-shake mechanism  44 . Furthermore, the electronic device  40  can further include at least one focusing assisting module  47  and at least one sensing element  45 . The focusing assisting module  47  can be a flash module  46  for compensating a color temperature, an infrared distance measurement component, a laser focus module, etc. The sensing element  45  can have functions for sensing physical momentum and kinetic energy, such as an accelerator, a gyroscope, a Hall Effect Element, to sense shaking or jitters applied by hands of the user or external environments. Accordingly, the imaging lens assembly of the electronic device  40  equipped with an auto-focusing mechanism and the optical anti-shake mechanism  44  can be enhanced to achieve the superior image quality. Furthermore, the electronic device  40  according to the present disclosure can have a capturing function with multiple modes, such as taking optimized selfies, high dynamic range (HDR) under a low light condition, 4K resolution recording, etc. Furthermore, the users can visually see a captured image of the camera through the user interface  42  and manually operate the view finding range on the user interface  42  to achieve the autofocus function of what you see is what you get. 
     Moreover, the imaging lens assembly, the image sensor, the optical anti-shake mechanism  44 , the sensing element  45  and the focusing assisting module  47  can be disposed on a flexible printed circuit board (FPC) (its reference numeral is omitted) and electrically connected with the associated components, such as the imaging signal processor  43 , via a connector (not shown) to perform a capturing process. Since the current electronic devices, such as smart phones, have a tendency of being compact, the way of firstly disposing the imaging lens assembly and related components on the flexible printed circuit board and secondly integrating the circuit thereof into the main board of the electronic device via the connector can satisfy the requirements of the mechanical design and the circuit layout of the limited space inside the electronic device, and obtain more margins. The autofocus function of the imaging lens assembly can also be controlled more flexibly via the touch screen of the electronic device. According to the 4th embodiment, the electronic device  40  includes a plurality of sensing elements  45  and a plurality of focusing assisting modules  47 . The sensing elements  45  and the focusing assisting modules  47  are disposed on the flexible printed circuit board and at least one other flexible printed circuit board (not shown) and electrically connected with the associated components, such as the image signal processor  43 , via corresponding connectors to perform the capturing process. In other embodiments (not shown herein), the sensing elements and the focusing assisting modules can also be disposed on the main board of the electronic device or carrier boards of other types according to requirements of the mechanical design and the circuit layout. 
     Furthermore, the electronic device  40  can further include, but not be limited to, a display, a control unit, a storage unit, a random access memory (RAM), a read-only memory (ROM), or the combination thereof. 
       FIG.  4 D  is a schematic view of an image shot via the ultra-wide angle camera module  41   a  according to the 4th example in  FIG.  4 A . In  FIG.  4 D , the larger range of the image can be captured via the ultra-wide angle camera module  41   a , and the ultra-wide angle camera module  41   a  has the function of accommodating more wide range of the scene. 
       FIG.  4 E  is a schematic view of an image shot via the high resolution camera module  41   b  according to the 4th example in  FIG.  4 A . In  FIG.  4 E , the image of the certain range with the high resolution can be captured via the high resolution camera module  41   b , and the high resolution camera module  41   b  has the function of the high resolution and the low deformation. 
       FIG.  4 F  is a schematic view of an image shot via the telephoto camera module  41   c  according to the 4th example in  FIG.  4 A . In  FIG.  4 F , the telephoto camera module  41   c  has the enlarging function of the high magnification, and the distant image can be captured and enlarged with high magnification via the telephoto camera module  41   c.    
     In  FIGS.  4 D to  4 F , the zooming function can be obtained via the electronic device  40 , when the scene is captured via the camera module  41  with different focal lengths cooperated with the function of image processing. 
     The foregoing description, for purpose of explanation, has been described with reference to specific examples. It is to be noted that Tables show different data of the different examples; however, the data of the different examples are obtained from experiments. The examples were chosen and described in order to best explain the principles of the disclosure and its practical applications, to thereby enable others skilled in the art to best utilize the disclosure and various examples with various modifications as are suited to the particular use contemplated. The examples depicted above and the appended drawings are exemplary and are not intended to be exhaustive or to limit the scope of the present disclosure to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings.