TWI494627B - Optical signal gather member and optical module used thereof - Google Patents

Description

Condenser and photoelectric conversion device using the same

The present invention relates to a concentrating device and a photoelectric conversion device using the concentrating device, and more particularly to a concentrating device capable of saving cost and reducing optical loss, and a photoelectric conversion device using the concentrating device.

The Chinese Patent Publication No. 102667565A discloses a conventional photoelectric conversion device in which an optical signal emitted from an optical fiber enters a photoelectric conversion device after being converted by a lens array, and the photoelectric conversion device converts the optical signal into an electrical signal. Since the conventional technology uses a lens to gather optical signals together and transmit them to the photoelectric conversion device, an additional lens is required, which increases the cost, and the position of the lens needs to be accurately set, so that the lens receives the optical signal emitted from the optical fiber, and tries to Reducing the loss of optical signals brings great difficulties to manufacturing.

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

It is an object of the present invention to provide a concentrating device which can save cost and reduce optical loss, and a photoelectric conversion device using the concentrating device.

In order to solve the foregoing technical problem, the present invention provides a concentrating device for transmitting and collecting optical signals, the concentrating device comprising a plastic body and a leakage disposed on the plastic body The bucket-shaped passage includes a top end and a bottom end opposite to the top end, and the top end has an area larger than the bottom end area, and the optical signal is collected from the top end of the passage and then collected from the bottom end of the passage.

Compared with the prior art, the present invention saves cost by providing a funnel-shaped channel on the plastic body to collect optical signals and gather the optical signals together; at the same time, the top of the channel can be designed with different sizes according to requirements. Reduce the loss of optical signals.

100‧‧‧ photoelectric conversion device

8‧‧‧ concentrating device

1‧‧‧Plastic body

10‧‧‧ upper surface

101‧‧‧ channel

1010‧‧‧Top

1011‧‧‧ bottom

1012‧‧‧Optical adhesive

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 concentrating device of the present invention; and the third figure is an enlarged view of the circled portion of the concentrating device shown in the second figure; The perspective view of the photoelectric conversion device, the optical fiber module and the circuit board before assembly; the fifth figure is a perspective view of the photoelectric conversion device, the optical fiber module and the circuit board after assembly; the sixth figure is the assembly diagram shown in the fifth figure A cross-sectional view of VI-VI; and a seventh view is an enlarged view of a circled portion of the cross-sectional view shown in the sixth figure.

Referring to the first and fifth figures, the photoelectric conversion device 100 of the present invention is disposed on the circuit board 6 for receiving the optical signal emitted from the optical fiber module 7 and converting the optical signal into an electrical signal. The photoelectric conversion device 100 The concentrating device 8 , the plurality of conductive terminals 2 and the fixed terminal 3 disposed on the concentrating device 8 , and the plurality of solders 5 and the conductive terminals 2 and the solid The photovoltaic element 4 soldered to the terminal 3 is fixed.

Referring to the first to third figures, the concentrating device 8 includes a plastic body 1 and a plurality of channels 101 disposed on the plastic body 1. The plastic body 1 is provided near the lower surface 11 of the circuit board 6 and the upper surface 10 opposite to the lower surface 11. 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 through the upper surface 10 and the lower surface 11. The plurality of channels 101 extend through the upper surface 10 and the lower surface 11 of the plastic body 1. Referring to the seventh figure, the plurality of channels 101 are funnel-shaped structures, including a top end 1010 and a bottom end 1011 opposite to the top end 1010. The area of the top end 1010 is larger than the area of the bottom end 1011, and the optical signal enters the channel from the top end 1010 of the channel 101. After 1010, it is gathered from the bottom end 1011 of the channel 1010. The channel 1010 is filled with an optical glue 1012. The refractive index of the optical adhesive 1012 is greater than the refractive index of the plastic body 1, preferably the refractive index of the optical adhesive 1012 is greater than 1.6, and the refractive index of the plastic body 1 is less than 1.5, which is the best to reduce the optical loss.

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 fourth and seventh figures, when the photoelectric conversion device 100 of the invention 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 recessed portions 113 of the plastic body 1. Then, the photovoltaic 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 through the solder 5, and the second conductive sheet 42 of the photovoltaic element 4 Through solder 5 is soldered to the first soldering portion 22 of the conductive terminal 2, at which time the photovoltaic element 4 is aligned with the light collecting means 101 in the vertical direction to receive the light signal collected from the light collecting means 101. The fixed terminal 3 is soldered to the photovoltaic element 4 for balancing the fixed photovoltaic element 4.

Referring to the fourth to seventh embodiments, 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 through hole 61 of the circuit board 6, so that the optical fiber module 7 is assembled with the photoelectric conversion device 100 and the circuit board 6. Together.

Referring to FIG. 6 , the lens 72 disposed in the optical fiber module 7 converts the divergent optical signal emitted from the optical fiber 71 into a parallel optical signal, and the concentrating device 101 disposed in the photoelectric conversion device 100 of the present invention transmits the light from the lens 72. The parallel optical signals are gathered together, and since the photovoltaic element 4 is aligned with the concentrating device 101 in the vertical direction, the photoelectric element 4 can smoothly receive the optical signal collected from the concentrating device 101, thereby converting the optical signal into an electrical signal. .

The invention saves the cost by providing the funnel-shaped channel 101 on the plastic body 1 and collecting the optical signals together, thereby saving the cost; at the same time, the top end 1010 of the channel 101 can be designed with different sizes as needed to reduce the optical signal. Loss.

1‧‧‧Plastic body

101‧‧‧ channel

1010‧‧‧Top

1011‧‧‧ bottom

1012‧‧‧Optical adhesive

2‧‧‧Electrical terminals

22‧‧‧First Welding Department

3‧‧‧Fixed terminals

4‧‧‧Optoelectronic components

41‧‧‧First conductive sheet

42‧‧‧Second conductive sheet

5‧‧‧ solder

Claims (8)

A concentrating device for transmitting and concentrating an optical signal, wherein the concentrating device comprises: a plastic body; and a channel disposed on the plastic body and having a funnel shape, the channel including a top end and a bottom opposite to the top end At the end, the area of the top end is larger than the area of the bottom end, and the optical signal is collected from the top end of the channel and then collected from the bottom end of the channel, wherein the inner wall of the channel is plated with a metal layer. The concentrating device of claim 1, wherein the channel is filled with an optical glue, and the refractive index of the optical glue is greater than a refractive index of the plastic body. The concentrating device of claim 2, wherein the refractive index of the optical adhesive is greater than 1.6, and the refractive index of the plastic body is less than 1.5. 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 comprising: a plastic body; a plurality of conductive terminals disposed on the plastic body; and a photoelectric component, wherein And a concentrating device according to any one of claims 1 to 4, wherein the concentrating device is aligned with the photovoltaic element in a vertical direction, 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 is soldered to the circuit board. The photoelectric conversion device of claim 4, 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 of claim 5, 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. The photoelectric conversion device of claim 6, wherein the plastic body is provided with a receiving groove for receiving the conductive terminal and a recess for receiving the fixed terminal, and the extending direction of the receiving groove is perpendicular to the extending direction of the concave portion. The photoelectric conversion device of claim 4, wherein the second welded portion extends out of a lower surface of the plastic body.