JPS60227486A - Optical wiring method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to optical data transmission, particularly to an optical wiring system between printed circuit boards.

[Background technology]

Conventionally, in the field of A-electronic circuits, photocouplers are often used to prevent external noise, prevent radiation of internal noise, and insulate between each device and the power supply. It was necessary to use meta-V wires to connect two elements or between substrates. Furthermore, conventional optical remote control systems are dedicated, cannot add and transmit data from outside, and are large in size.

[Objective of the Invention 1 The present invention has been made to improve the above-mentioned points, and its purpose is to easily improve wiring at two or more points on a printed circuit board or between printed circuit boards.
Moreover, it is an object of the present invention to provide an optical wiring system that ensures sufficient electrical insulation and noise tolerance.

[Disclosure of the invention]

The present invention will be explained below based on the drawings shown as examples.

The present invention provides a light emitting module having a light emitting source 1.11 at various positions as shown in FIG. 1/2 is used to perform optical wiring between printed circuit boards or between different locations on a printed circuit board. As shown in FIG. 3(a), the light emitting modini v2 is as follows:
A light-emitting element 4 that converts an electrical signal into light, and the light-emitting element 4
A lens 5 that converts the emitted light into parallel light, or a structure in which a switching transistor 6 is added to the above structure as shown in FIG. 3(b) are used. In addition, as the light receiving module 2/, as shown in FIG. 4(a),
A lens 7 that focuses parallel light, a photodiode 8 that converts the focused light into an electrical signal, and an operational amplifier 9 that amplifies the electrical signal (Fig.
A phototransistor 10 converts light focused by a lens 7 into an electric signal, as shown in FIG. As the relay module, a combination of the above light emitting module 2 and light receiving module 2' is used as shown in FIG. When performing optical wiring using the above Moginy V, printed circuit board 1
The wiring between the two points on the printed circuit board 11 is as shown in FIG.
/ and are arranged so that their origin parts 1.11 are opposite to each other. In the case of optical wiring between the printed circuit boards 11 and 117, as shown in FIG.
．． Light emitting/receiving module 2-2'c! : A light receiving/emitting module 2/ having a light receiving/emitting section 1ζ1 on the top m.

2 is installed on the printed circuit board 11, 117 so that its origin (support) part 1°1/ is opposite to each other. In addition, if it is not possible to make the transmitting and receiving parts 1.1/ directly face each other in a straight line, the optical fiber rod 12 (including optical It can be connected by fiber). This also applies to the optical wiring between two points on the printed circuit board ll. In addition, if you use Relay Modine V3, you can transmit the same data to two or more points when the distance between the source (branch) optical modules A/2.27 is long, when the optical transmission path is not straight, or when the same data is transmitted to two or more points. If so, please refer to the 8th bib (
The source (branch) optical module 2.21 and the relay module -71/3 may be arranged as shown in a), (b), and (c).

FIG. 9 shows a case where optical data signals of multiple systems are transmitted. Each mod x 7L' 2A 3A-2'A and 2B-2
/B and 2C-3C-2'C transmission,
In order to prevent mutual interference between the signals of each system, light of different wavelengths is used for each system. In this case, it is necessary to use light-emitting collectors 1 with different emission wavelengths, and to select wavelengths based on a bandpass filter or the like in front of the light-receiving element 1'. FIG. 10 shows an example of the mounting structure of the optical modiny lv2.2/. A component mounting board U on which each component is mounted and one-shot (support) optical elements 4, 8. tO is built into the housing 14,
The cylindrical body 14 is formed with a light emitting and capturing window, a lens 5.7 is attached to the window, and a fixed vibrator 16 which also functions as a hood and an optical fiber rod is inserted is formed in the window. A power supply and input/output terminals 17 are extended from the component mounting board 13 to the outside of the housing 14.

〔Effect of the invention〕

As described above, according to the present invention, by using one light-emitting module and one light-receiving module at any point on a printed circuit board or between multiple printed circuit boards, wiring at any point can be easily and sufficiently performed. We were able to provide an optical wiring system that ensures good electrical insulation and noise tolerance.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the emitting (support) optical module, Fig. 2 is a cross-sectional view of the relay Mojiny V, Fig. 3 is a circuit diagram configuring the light emitting Mojiny V, Fig. 4 is a circuit diagram configuring the light receiving module,
Figure 5 is a circuit diagram configuring Relay Moji JL 7L/, Figure 6
The figure is a cross-sectional view showing optical wiring between two points on a printed circuit board, No. 7 (8) is a cross-sectional view showing optical wiring between two points on a printed circuit board, and Figure 8 is a cross-sectional view showing optical wiring between two points on a printed circuit board.
FIG. 9 is a cross-sectional view and a plan view showing optical wiring at points, FIG. 9 is a plan view showing a plurality of systems of optical wiring on a printed circuit board, and FIG. 10 is a cross-sectional view showing a mounting structure of a light emitting module. 1.1'...Future (branch) department, 2.21...Future (fund)
Optical module, 3...Relay module V%11,11/
···Printed board. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1] Figure 2 Figure 2 Figure N5 Figure 7 Figure 8 (a) (C) ・Figure 9 Figure 10

Claims (1)

[Claims] (1) In wiring between arbitrary points on a printed circuit board, a light emitting module having a light emitting part and an electrical-to-optical converting part,
An optical wiring system characterized in that a light receiving module having a light receiving section and a light-to-signal conversion section is used, and the light emitting section and the light receiving section are optically coupled.