Embodiment
Below in conjunction with accompanying drawing, the present invention being done to one specifically introduces.
See also Fig. 1 to Fig. 4, the photoelectric conversion module 100 that embodiment of the present invention provides, it is for Optical Fiber Transmission.Described photoelectric conversion module 100 comprises a circuit board 10, a carriage 15 and a photoelectric coupling part 20.Described carriage 15 is fixed on described circuit board 10, and described photoelectric coupling part 20 is fixed on described carriage 15.
Described circuit board 10 comprises the bottom surface 102 that a loading end 101 and deviates from mutually with described loading end 101.On described circuit board 10, be provided with two the first location divisions, in present embodiment, described the first location division is one to run through the first pilot hole 103 of described loading end 101 and described bottom surface 102 simultaneously.Between two described the first pilot holes 103, be also provided with a plurality of photoelectric subassemblys 104.Described photoelectric subassembly 104 can be light signal emitting module and light signal receiving unit.Described smooth signal emitting module can be laser diode (laser diode), and described smooth signal receiving unit can be photodiode (photodiode).
Described carriage 15 comprises that a first surface 151 and relative with described circuit board 10 deviates from the second surface 152 of described first surface 151.Described carriage 15 offer one run through described first surface 151 and second surface 152 simultaneously run through opening 153.Two the second location divisions and two the 3rd location divisions are set on described carriage 15.In present embodiment, described the second location division is along vertically extending the first reference column 1510 of described first surface 151, and described the first reference column 1510 is one-body molded with described carriage 15.The shape of described the first reference column 1510 is all corresponding with shape and the position of position and described the first pilot hole 103.Described the first reference column 1510 matches so that described carriage 15 is positioned on the loading end 101 of circuit board 10 with described the first pilot hole 103 by the mode of interference fit.Described the 3rd location division is one to run through the second pilot hole 1520 of described first surface 151 and described second surface 152 simultaneously.
Understandable system, in practical application, can be also that the first location division is the first reference column, and the second location division corresponds to the first pilot hole; Described the first location division is identical with the quantity of described the second location division, and to be not limited to be two, and the quantity of described the first location division and described the second location division all can one or more.
Described photoelectric coupling part 20 comprises one first end face 21, a upper surface 22 and one and the opposing lower surface 23 of described upper surface 22.Described upper surface 22 is parallel to each other with described lower surface 23 and all with described first end face 21 is vertical is connected.
On described the first end face 21, be extended with a pair of positioning convex column 210, offer an alignment slot 211 simultaneously.Described alignment slot 211 comprises a bottom land 2110.On described bottom land 2110, be provided with a plurality of the first coupled lens 26.In present embodiment, described the first coupled lens 26 is convex lens, and is shaped on described bottom land 2110.
On described upper surface 22, offer first groove 221.Described the first groove 221 comprises the groove plane 2210 and the inclined-plane 2211 arranging in angle of 45 degrees with described groove plane 2210 that are parallel to described upper surface 22.The optical axis of described the first coupled lens 26 be parallel to described groove plane 2210 and with described inclined-plane 2211 in angle of 45 degrees.
On described lower surface 23, offer second groove 231, described the second groove 231 bottoms are provided with a plurality of the second coupled lens 28 corresponding to described the first coupled lens 26.In the light path of the light signal that described in each, the second coupled lens 28 is arranged at corresponding optical fiber after 2211 turnovers of described inclined-plane.In present embodiment, described in each the optical axis of the second coupled lens 28 be 45 degree with the angle on described inclined-plane 2211 and with the optical axis intersection of corresponding first coupled lens 26 on described inclined-plane 2211.Described the second coupled lens 28 is convex lens and the one-body molded setting in bottom with described the second groove 231, and described in each, the second coupled lens 28 correspondences align mutually with photoelectric subassembly described in one 104.Two the 4th location divisions are also set on described photoelectric coupling part 20.In present embodiment, described the 4th location division is along vertically extending the second reference column 230 of described lower surface 23, and described the second reference column 230 is one-body molded with described photoelectric coupling part 20.The shape of described the second reference column 230 is all corresponding with shape and the position of position and described the second pilot hole 1520.Described the second reference column 230 matches so that described photoelectric coupling part 20 is positioned on the second surface 152 of described carriage 15 with described the second pilot hole 1520 by the mode of interference fit.
Understandable system, in practical application, can be also that the 3rd location division is the second reference column, and the 4th location division corresponds to the second pilot hole; Described the 3rd location division is identical with the quantity of described the 4th location division, and to be not limited to be two, and the quantity of described the 3rd location division and described the 4th location division also can one or more.
When use, the light signal that described photoelectric subassembly 104 is launched, exposes to described inclined-plane 2211 through described the second coupled lens 28.Described inclined-plane 2211 for will be radiated at the light signal reflection on described inclined-plane 2211 so that will spend described the first coupled lens 26 to correspondence through the smooth signal deviation 90 of described the second coupled lens 28, and enter a corresponding optical fiber (not shown) through described first coupled lens 26 of correspondence.
Described the first reference column 1510 matches with described the first pilot hole 103 so that described carriage 15 is positioned on the loading end 101 of circuit board 10, and described the second reference column 230 matches with described the second pilot hole 1520 so that described photoelectric coupling part 20 is positioned on described carriage 15, therefore, positioning precision is high.And because described photoelectric coupling part 20 is to be fixed on described circuit board 10 by described carriage 15, described photoelectric coupling part 20 by described carriage 15 and described circuit board 10 separately, therefore, can avoid described photoelectric subassembly 104 second coupled lens 28 of damaging.
In addition, those skilled in the art also can do other and change in spirit of the present invention, and certainly, the variation that these do according to spirit of the present invention, within all should being included in the present invention's scope required for protection.