TWI495916B - Optical module - Google Patents

Description

Photoelectric conversion device

The invention relates to a photoelectric conversion device, in particular to a photoelectric conversion device capable of accurately receiving an optical signal.

The Chinese Patent Publication No. 102667565A discloses a conventional photoelectric conversion device which can only receive optical signals transmitted in a vertical direction, and the optical signals emitted from the optical fibers are transmitted in the horizontal direction. A lens array must be disposed between the optical fiber and the photoelectric conversion device, and the optical signal emitted from the optical fiber is converted and transmitted in a vertical direction to be received by the photoelectric conversion device. However, this kind of design must increase the lens array, which causes waste of cost, and the lens array needs to be accurately aligned with the photoelectric conversion device, and the assembly is too cumbersome.

In view of this, it is indeed necessary to improve the existing photoelectric conversion device to overcome the above-mentioned drawbacks of the prior art.

It is an object of the present invention to provide a photoelectric conversion device that can accurately receive optical signals and facilitate high-frequency transmission.

In order to solve the foregoing technical problems, the present invention provides a photoelectric conversion device that is disposed on a circuit board to receive an optical signal and convert the optical signal into an electrical signal. The photoelectric conversion device includes a plastic body and a plurality of conductive terminals disposed on the plastic body. a lens that is integrated with the optical signal and a photovoltaic element that is soldered to the conductive terminal, the photovoltaic element Align with the lens in the vertical direction.

Compared with the prior art, since the photoelectric conversion device of the present invention is provided with a lens for collecting optical signals together, the lens and the photoelectric element are aligned in the vertical direction, thereby ensuring that the photoelectric conversion device can accurately receive the optical signal, and the photoelectric conversion device of the present invention. The conductive terminal is electrically connected to the photoelectric component and the circuit board, thereby effectively reducing the resistance and the inductance, and is favorable for the development of the high frequency transmission.

100‧‧‧ photoelectric conversion device

1‧‧‧Plastic body

10‧‧‧ upper surface

101‧‧‧ lens

102‧‧‧Positioning holes

11‧‧‧ Lower surface

110‧‧‧Support

112‧‧‧ Containment trough

113‧‧‧Depression

2‧‧‧Electrical terminals

21‧‧‧ base

22‧‧‧First Welding Department

23‧‧‧Second welding department

3‧‧‧Fixed terminals

31‧‧‧ Fixed Department

32‧‧‧Fixed feet

4‧‧‧Optoelectronic components

41‧‧‧First conductive sheet

42‧‧‧Second conductive sheet

5‧‧‧ solder

6‧‧‧Circuit board

61‧‧‧through hole

7‧‧‧Fiber optic modules

71‧‧‧ fiber optic

72‧‧‧second lens

73‧‧‧Positioning column

The first figure is an exploded perspective view of the photoelectric conversion device of the present invention; the second figure is a perspective view of the plastic body shown in the first figure; and the third figure is a perspective view of the photoelectric conversion device, the optical fiber module and the circuit board before assembly of the present invention; The fourth figure is a perspective view of the photoelectric conversion device of the present invention assembled with the optical fiber module and the circuit board; the fifth figure is a cross-sectional view along the line VV of the assembly drawing shown in the fourth figure; and the sixth figure is the sectional view shown in the fifth figure. An enlarged view of the circled portion of the diagram.

Referring to the first and fourth figures, the photoelectric conversion device 100 of the present invention is disposed on the circuit board 6 to receive the optical signal emitted from the optical fiber module 7 and convert the optical signal into an electrical signal. The photoelectric conversion device 100 includes The plastic body 1 includes a lens 101 disposed on the plastic body 1, a plurality of conductive terminals 2 and fixed terminals 3, a plurality of solders 5, and a photovoltaic element 4.

Referring to the first figure and the second figure, the plastic body 1 is provided near the lower surface of the circuit board 6. The face 11 and the upper surface 11 are opposite the upper surface 10. The plastic body 1 is provided with a recessed portion 113 recessed from the lower surface 11 toward the inside of the plastic body 1 and a plurality of receiving grooves 112. The extending direction of the receiving groove 112 is perpendicular to the extending direction of the recessed portion 113. The plastic body 1 is further provided with a plurality of support portions 110 extending from the lower surface 11 and a pair of positioning holes 102 penetrating the upper surface 10 and the lower surface 11. The complex lens 101 is disposed on the upper surface 10 of the plastic body 1.

The conductive terminal 2 is provided with a base portion 21 and a first solder portion 22 and a second solder portion 23 extending from opposite ends of the base portion 21. The fixed terminal 3 is provided with a fixing portion 31 and a plurality of fixing legs 32 extending from the fixing portion 31. The photovoltaic element 4 is provided with a plurality of first conductive sheets 41 in the first row and a plurality of second conductive sheets 42 in the second row.

Referring to the third and sixth figures, in the embodiment of the present invention, when the photoelectric conversion device 100 is assembled, the conductive terminals 2 are assembled into the receiving slots 112 of the plastic body 1, and the fixed terminals 3 are assembled into the recess of the plastic body 1. In the portion 113, the photoelectric element 4 and the conductive terminal 2 and the fixed terminal 3 are soldered together, and the first conductive sheet 41 of the photovoltaic element 4 is soldered to the fixing leg 32 of the fixed terminal 3 by the solder 5, and the photoelectric element 4 is The two conductive sheets 42 are soldered to the first solder portion 22 of the conductive terminal 2 by the solder 5, and at this time, the photovoltaic element 4 is aligned with the lens 101 in the vertical direction to receive the light signal collected from the lens 101. The fixed terminal 3 is soldered to the photovoltaic element 4 for balancing the fixed photovoltaic element 4.

Referring to the third to sixth figures, when the photoelectric conversion device 100 of the present invention is used, the second soldering portion 23 of the conductive terminal 2 is soldered to the circuit board 6 by the solder 5, and the second soldering portion 23 extends out of the plastic body 1. The lower surface 10, the photovoltaic element 4 and the support portion 110 of the plastic body 1 are supported on the circuit board 6. At this time, the through hole 61 provided in the circuit board 6 is aligned with the positioning hole 102 of the electric conversion device 100. The optical fiber module 7 is provided with a positioning post 73. When assembled, the positioning post 73 passes through the positioning hole 102 of the photoelectric conversion device 100 and the circuit board 6. The hole 61 allows the optical fiber module 7 to be assembled with the photoelectric conversion device 100 and the circuit board 6.

Referring to FIG. 5, the second lens 72 disposed on the optical fiber module 7 converts the diverged optical signal emitted from the optical fiber 71 into a parallel optical signal, and the lens 101 disposed on the photoelectric conversion device 100 of the present invention passes the second lens 72. The emitted parallel optical signals are gathered together. Since the photovoltaic element 4 and the lens 101 are aligned in the vertical direction, the photoelectric element 4 can smoothly receive the optical signal collected from the lens 101, thereby converting the optical signal into an electrical signal.

The photoelectric conversion device 100 of the present invention is provided with a lens 101 for collecting optical signals and a photoelectric element 4 aligned with the lens 101 in the vertical direction, ensuring that the photoelectric element 4 can smoothly receive the optical signals collected from the lens 101; The terminal 2 is electrically connected to the photoelectric element and the circuit board 6, which effectively reduces the resistance and the inductance, and is favorable for the development of high frequency transmission.

1‧‧‧Plastic body

101‧‧‧ lens

2‧‧‧Electrical terminals

22‧‧‧First Welding Department

23‧‧‧Second welding department

3‧‧‧Fixed terminals

4‧‧‧Optoelectronic components

6‧‧‧Circuit board

7‧‧‧Fiber optic modules

71‧‧‧ fiber optic

72‧‧‧second lens

Claims (7)

A photoelectric conversion device can be disposed on a circuit board to receive an optical signal and convert the optical signal into an electrical signal. The photoelectric conversion device comprises: a plastic body; a plurality of conductive terminals disposed on the plastic body, wherein the plastic body is provided a receiving groove for receiving the conductive terminal; a lens disposed on the plastic body to gather the optical signals together; and a photoelectric element soldered to the conductive terminal, the photoelectric element being aligned with the lens in a vertical direction. The photoelectric conversion device of claim 1, wherein the conductive terminal is provided with a base portion and a first soldering portion and a second soldering portion extending from the base portion, the first soldering portion is soldered to the photovoltaic element, and the second soldering portion and the circuit are Plate welding. The photoelectric conversion device of claim 2, wherein the photoelectric conversion device further comprises a fixed terminal disposed on the plastic body, and the fixed terminal is soldered to the photovoltaic element. The photoelectric conversion device according to claim 3, wherein the fixed terminal is provided with a fixing portion and a plurality of fixing legs extending from the fixing portion, and the fixing leg is welded to the photoelectric element. According to the photoelectric conversion device of claim 4, the plastic body is provided with a recessed portion for receiving the fixed terminal, and the extending direction of the receiving groove is perpendicular to the extending direction of the recessed portion. The photoelectric conversion device of claim 2, wherein the second welded portion extends out of a lower surface of the plastic body. The photoelectric conversion device of claim 1, wherein the plastic body is provided with a plurality of support portions supported on the circuit board.