JPH07303085A - Optical system device - Google Patents

Abstract

PURPOSE:To easily extend or detach the board of an optical system by parallelly supplying optical signals from an external means to a signal processing means and outputting optical signals parallelly emitted from the signal processing means to the external means. CONSTITUTION:A board 4 for optical system mounting a light emitting element 1, light receiving element 2 and device part 3 is mounted inside a case 5 where a groove 6 is dug. The case 5 is installed on a counter face on the inserting side of the board 4 for optical system so that a light receiving element 2a can face the light emitting element 1 of the board 4 for optical system and a light emitting element la can face the light receiving element 2. The light emitting element la is fitted while being paired with a light receiving element 2b and the light receiving element 2a is fitted while being paired with a light emitting element 1b so that light can be exchanged with the outside of the case 5. The case 5 is provided with the groove 6 and used for fixing the board 4. Thus, information can be transmitted between the boards 4 of the case 5 corresponding to combination with a system existent outside and a control method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information optical path connecting device in an optical system, and more particularly to speeding up data processing, increasing capacity, and responding to a failure by making an information optical path for transmitting an optical signal independent and simple. The present invention relates to an optical system device which is improved.

[0002]

2. Description of the Related Art In recent years, systems using light have been actively developed in the fields of communication and computers for the diversified information society. This optical system aims to significantly improve the communication speed and the amount of information, which have been limited by conventional electric systems, by making the best use of the characteristics of light (transmission speed, amount of information, etc.). The current optical system is
High-speed photosensitive devices such as low-cost semiconductor lasers and PIN diodes, optical circuit devices composed of lenses, optical fibers, and glass-based optical waveguides are combined with a photoelectric conversion device to perform control by light and electricity. As a result, it has become possible to study a system that can realize large capacity and high speed data transfer. It is well known in the field of computer industry that the electric processing speed cannot be changed, but the improvement of the processing system enables the processing of a large amount of data.

An information processing system using a computer is
It is put on the market with the minimum configuration of multiple boards having each function. After purchasing the system, users are adding additional memory and additional boards for controlling measuring instruments to the system to speed up information processing, due to problems in data processing usage, volume, and time. The current situation. Information transmission between boards, including those for expansion, is performed by electrical signals through a so-called bus for information passage. By converting this electric signal into an optical signal, a large capacity and high speed information transmission becomes possible.

In order to enable the information transmission of the above-mentioned optical signal, measures for facilitating the arrangement of the information optical path are being studied. As examples thereof, JP-A-2-41042 and JP-A-2-5
There is 6973. In these devices, a light emitting element and a light receiving element are attached to both surfaces of each board, and information is transmitted between adjacent boards.

Further, Japanese Patent Laid-Open No. 5-297422 discloses that the light output of a laser light source set on one board is distributed to a photodetector set on another board via a mirror, a lens and a beam splitter. There is an optical connection device.

[0006]

However, according to the conventional arrangement of the information optical paths, each board having the light emitting and light receiving elements on both sides plays a role of a repeater for transmitting information, so that the specific information optical paths are There is a problem that when the board is defective or broken, the optical path is closed even if there is no abnormality in the other boards. Further, there is a problem that it is difficult to identify a failure point (board) due to the closed information optical path.

Furthermore, since there is a limitation on the distance between boards due to the sensitivity of the light emitting and light receiving elements, even if the defective board is removed, the system cannot operate normally as it is, and in some cases all the boards cannot be operated. If you do not move, the minimal system will not work properly. In connection with this, the system configuration is such that the degree of freedom in installing and removing expansion boards as needed is narrowed.

In order to solve such a problem, the connection structure of each board must be independent of each other, not between adjacent boards. As a result, it is possible to build a system that is not affected by a failure of the expansion board.

An object of the present invention is to provide an optical system board installation device for easily adding or removing boards used in an optical system without closing the information optical path even if the function of a specific board is impaired. To do.

[0010]

According to the present invention, even if the function of a specific board is impaired, the information optical path is not closed and the boards used in the optical system can be easily added or removed. A plurality of light incident sections that receive an optical signal and output an electrical signal, a signal processing section that performs signal processing on the electrical signal, and a light emitting section that receives the electrical signal that has undergone the signal processing and emits an optical signal. Signal processing means, optical signal input means for inputting optical signals from external means and supplying the optical signals in parallel to the light incident portions of the plurality of signal processing means, and the optical signals of the plurality of signal processing means. There is provided an optical system device including an optical signal output unit that outputs the optical signals emitted in parallel from an emission unit to an external unit.

Each of the plurality of signal processing means has a device section as the signal processing section mounted on a board supported in parallel with the case, and the board is attached or detached according to the operating condition of the device section. It may be configured.

The optical signal inputting means converts a plurality of optical signals inputted from the external means into a plurality of electric signals, and a plurality of optical signals converting the plurality of electric signals into a plurality of optical signals. A plurality of light emitting elements that are emitted in parallel to the light incident portion of the signal processing means, and the optical signal output means is a plurality of optical signals that are emitted in parallel from the light emitting portions of the plurality of signal processing means. May be configured to include a plurality of light receiving elements for converting the plurality of electric signals into a plurality of electric signals, and a plurality of light emitting elements for converting the plurality of electric signals into a plurality of optical signals and emitting the light signals to the external means.

The optical signal input means has a plurality of reflection mirrors that reflect a plurality of optical signals input from the external means in parallel and supply the reflected light signals to the light incident portions of the plurality of signal processing means. The signal output means may include a plurality of reflection mirrors that reflect a plurality of optical signals emitted from the light emitting portions of the plurality of signal processing means in parallel and output the reflected signals to the external means.

The optical signal input means is arranged on the optical path of one optical signal input from the external means, and a part of the received optical signal is transmitted to the optical signal of the corresponding signal processing means of the plurality of signal processing means. It may be configured to have a plurality of half mirrors that reflect to the incident portion and transmit the remaining portion of the optical signal to a half mirror corresponding to another signal processing means arranged in the subsequent stage.

The plurality of half mirrors may be configured to have a transmittance that decreases toward the rear stage from the front stage.

The optical signal input means is arranged on the optical path of one optical signal input from the external means, and a part of the received optical signal is transmitted by the optical signal of the corresponding signal processing means of the plurality of signal processing means. The optical signal output means includes a plurality of half mirrors that reflect to the incident portion and transmit the remaining portion of the optical signal to a half mirror corresponding to another signal processing means arranged in a subsequent stage, and the optical signal output means includes the plurality of signal processing means. It may be configured to have a plurality of reflection mirrors that reflect a plurality of optical signals output in parallel from the light emitting unit of the means to the external means.

[0017]

The optical signal input means supplies the optical signal supplied from the external means in parallel to the light incident portions of the plurality of signal processing means.
The supplied optical signal is converted into an electric signal in the signal processing unit of the signal processing unit for signal processing, and the electric signal subjected to the signal processing is converted into an optical signal and output from the light emitting unit to the optical signal output unit. It is emitted in parallel. The optical signal output means outputs the optical signal to the external means. As a result, the information optical paths to the plurality of signal processing sections are independent, and even if a signal processing section of a specific signal processing section fails, the function of the signal processing section of the adjacent signal processing section is not impaired and the information optical path is kept. Is secured.

[0018]

FIG. 1 shows an embodiment of the present invention. FIG. 1 shows an optical system board 4 in which a light emitting element 1 and a light receiving element 2 and a device section 3 are mounted, mounted in a case 5 in which a board mounting groove 6 is dug. Board mounting case 5
Are installed so as to face the insertion side of the optical system board 4 so that the light receiving element 2a faces the light emitting element 1 of the optical system board 4 and the light emitting element 1a faces the light receiving element 2. . The light emitting element 1a installed in the board mounting case 5 is attached to the light receiving element 2b and the light receiving element 2a is paired with the light emitting element 1b so that light can be transmitted and received to and from the outside of the board mounting case 5. There is. The board mounting case 5 has a groove 6 corresponding to the thickness and depth of the optical system board 4, and a fixing frame (not shown) is fixed to the case from the direction of the board insertion opening to fix the board 4. It has a structure to be attached.

The side surface of each optical system board 4 is composed of a light emitting element 1 and a condenser lens by a semiconductor laser operating in a short wavelength region (780 nm to 900 nm) and a long wavelength region (1280 nm to 1550 nm) or a PI.
A light receiving element 2 composed of an N diode is mounted. The light emitting elements 1a and 1b and the light receiving elements 2a and 2b installed in the board mounting case 5 are elements similar to the light emitting element 1 and the light receiving element 2 mounted on the board 4. The light receiving element 2b receives the signal light inputted from the outside of the board mounting case 5, and the information is received.
Signal light is transmitted from the light emitting element 1a to the light receiving element 2 of the system board 4 by using electricity from a power supply unit (not shown) installed in the. The transmitted signal light is subjected to information processing such as calculation after optical conversion processing and optical Fourier calculation in the device unit 3 of the system board 4. The functions of these device units 3 are selected according to the application. The signal processed by the device unit 3 is
The light emitting element 1 is transmitted to the light emitting element 1 and is supplied with the electric power supplied from the board mounting case 5 similarly to the light emitting element 1a.
Is transmitted as an optical signal to the light receiving element 2a. The optical signal transmitted to the light receiving element 2a is transmitted to the outside of the board mounting case 5 as an optical signal by the light emitting element 1b. By such a method of transmitting information, the operation of each optical system board 4 becomes independent. That is, at a place where the board 4 is not mounted, the signal input from the outside is automatically erased by the board mounting case 5, but this does not stop the functions of other boards 4. . This does not hinder other boards 4 in the same manner even if the mounted board 4 is defective or broken.
Further, in this method, since the signal input and output to each system board 4 are independent, it is possible to control by the system control software not to output the signal to the signal input port to which the system board 4 is not mounted. It will be easy to do. That is, by the combination with the system existing outside the present invention and the control method, it becomes possible to transmit information between the individual system boards 4 mounted in the board mounting case 5.

FIG. 2 shows another embodiment of the present invention. Unlike the embodiment of FIG. 1, the position of the signal light input port for transmitting and receiving light to and from the outside of the board mounting case 5 is unified in one direction. This is to simplify the positioning of the signal optical path in the overall system when combined with an external system. The positions of the light emitting element 1 and the light receiving element 2 installed on the side surface of the system board 4 in order to have the structure as shown in FIG. 2 are different on each board. Light-emitting element 1a, light-receiving element 2 according to the installation position of light-receiving element 2
a is installed side by side on the opposite side of the board mounting case 5 on the insertion side of the system board 4. In FIG. 2, the traveling direction of the signal light output from the light emitting elements 1 and 1a is changed by the reflection mirror 7 installed at the board mounting case 5 at an angle of 45 ° and is transmitted to the light receiving elements 2 and 2a. . At this time, depending on the mounting position of the system board,
Since the transmission distance of the signal light becomes long and it becomes impossible to satisfy the performance of each element, a condenser lens (not shown) is provided between the optical paths of the light receiving element 2 and the light emitting element 1a and between the light emitting element 1 and the light receiving element 2a. No.) is singular and plural.

FIG. 3 shows still another embodiment of the present invention, which is a light emitting element 1a provided in a board mounting case 5 so as to output signal light in the arrangement direction of the optical system boards 4.
A light receiving element 2b that is integrated with the light emitting element 1a and inputs signal light from an external system (not shown), and a board for each optical system that is located on the optical path of the light emitting element 1a and reflects the signal light. Transmission type mirror lens 8A, which is divided into four
8B and 8C. The other structure is the same as that of the embodiment of FIG. 1, and the duplicated description will be omitted.

FIG. 4 shows a signal light distribution mechanism, and its operation will be described below. The signal light is output from the light emitting element 1a based on the signal light received by the light receiving element 2b.
Transmissive mirror lenses 8A, 8B and 8C having different transmittances are located on the optical path of the light emitting element 1a so that the reflected signal light enters the light receiving element 2 of the optical system board (not shown). The mirror surface is set at an angle of 45 degrees.

The transmittance of each transmissive mirror lens is 66.7% for the mirror lens 8A and 50% for the mirror lens 8B, with the signal light output from the light emitting element 1a being 100%.
The mirror lens 8C is set to 0%.

The signal light output from the light emitting element 1a is divided into a component reflected by the mirror lens 8A and incident on the light receiving element 2 and a component transmitted through the mirror lens 8A and incident on the mirror lens 8B. Here, the component reflected by the mirror lens 8A and incident on the light receiving element 2 is 33.3%, that is, 1/3 of the signal light output from the light emitting element 1a, and 66.7% (2 / 3) is a mirror lens 8
The light passes through A and enters the mirror lens 8B. 66.7% of the signal light transmitted through the mirror lens 8A
It is divided into 50% of reflected light and transmitted light by B, 33.35% (1/3) in the light receiving element 2, and 3 in the mirror lens 8C.
3.35% (1/3) is incident. Since the transmittance of the mirror lens 8C is 0%, 33.35% of the signal light transmitted through the mirror lens 8B enters the light receiving element 2 as reflected light.

By branching and transmitting the signal light in accordance with the number of optical system boards in this way, the structure of the optical bus for inputting the signal light to each optical system board 4 can be simplified. Furthermore, since the operation of the optical system board is performed independently, even if a defect or failure of a specific optical system board occurs, it does not hinder the operation of other optical system boards, and high speed operation is possible. Moreover, a large amount of information can be processed.

FIG. 5 shows still another embodiment of the present invention, which has a reflection mirror 7 on the optical path of the signal light output from the light emitting element 1 of the optical system board 4 in FIG. The signal light is made incident on the light receiving element 2a attached to the board mounting case 5 via the reflection mirror 7. The light receiving element 2a is integrated with a light emitting element 1b to which signal light is input from an external system (not shown). The light receiving element 1a and the light receiving element 2a are the light receiving element 2b and the light emitting element on the signal light input side. The board mounting case 5 and the board 1a are arranged in parallel at predetermined positions. The other structure is the same as that of the embodiment of FIG. 1, and the duplicated description will be omitted.

By providing the reflection mirror 7 on the optical path of the signal light output from the light emitting element 1 of the optical system board 4 as described above, the signal light input / output port of the optical system board 4 corresponds to the system form. Can be an array. Depending on the mounting position of the optical system board 4, there may be a difference in the transmission distance of the signal light. In such a case, a condenser lens or the like may be arranged on the optical path of the signal light as necessary. .

[0028]

As described above, according to the optical system device of the present invention, the optical signal is supplied from the external means to the signal processing means in parallel by the optical signal input means, and the optical signal is emitted from the signal processing means in parallel. Is output to the external means by the optical signal output means, it is possible to easily add or remove boards used in the optical system without closing the information optical path even if the function of a specific board is impaired. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing another embodiment of the present invention.

FIG. 3 is an explanatory diagram showing another embodiment of the present invention.

FIG. 4 is an explanatory view showing another embodiment of the present invention.

FIG. 5 is an explanatory diagram showing another embodiment of the present invention.

[Explanation of symbols]

 1, 1a, 1b, light emitting element 2, 2a, 2b, light receiving element 3, device section 4, optical system board 5, board mounting case 6, board mounting groove 7, reflection mirrors 8A, 8B, 8C, mirror lens

Claims (7)

[Claims] 1. A light incident unit that receives an optical signal and outputs an electric signal, a signal processing unit that performs signal processing on the electric signal, and light that outputs the optical signal upon receiving the signal-processed electric signal. A plurality of signal processing means having an emission part, an optical signal input means for inputting an optical signal from an external means and supplying the optical signals in parallel to the light incident parts of the plurality of signal processing means, and the plurality of signals An optical system device comprising optical signal output means for outputting the optical signals emitted in parallel from the light emitting portions of the processing means to an external means. 2. The plurality of signal processing means has a device unit as the signal processing unit mounted on a board supported in parallel with a case, and the board is attached / detached in accordance with an operating condition of the device unit. The optical system device according to claim 1, which is configured as described above. 3. The optical signal input means converts a plurality of optical signals input from the external means into a plurality of electric signals and a plurality of light receiving elements, and converts the plurality of electric signals into a plurality of optical signals. A plurality of light emitting elements that emit in parallel to the light incident portions of the plurality of signal processing means, and the optical signal output means emits a plurality of light emitted from the light emitting portions of the plurality of signal processing means in parallel. The light according to claim 1, further comprising a plurality of light receiving elements for converting an optical signal into a plurality of electric signals, and a plurality of light emitting elements for converting the plurality of electric signals into a plurality of optical signals and emitting the light to the external means. System unit. 4. The optical signal input means includes a plurality of reflection mirrors that reflect a plurality of optical signals input from the external means in parallel and supply the optical signals to the light incident portions of the plurality of signal processing means, 2. The optical signal output means includes a plurality of reflection mirrors that reflect a plurality of optical signals emitted from the light emitting units of the plurality of signal processing means in parallel and output the optical signals to the external means. Optical system equipment. 5. The optical signal input means is arranged on the optical path of one optical signal input from the external means, and a part of the received optical signal is stored in a part of the corresponding signal processing means of the plurality of signal processing means. 2. The optical system device according to claim 1, further comprising a plurality of half mirrors that reflect the light incident portion and transmit the remaining portion of the optical signal to a half mirror corresponding to another signal processing unit arranged in a subsequent stage. . 6. The optical system device according to claim 1, wherein the plurality of half mirrors have a transmittance that decreases toward a rear stage from a front stage. 7. The optical signal input means is disposed on the optical path of one optical signal input from the external means, and a part of the received optical signal is stored in a part of the corresponding signal processing means of the plurality of signal processing means. It has a plurality of half mirrors that reflect to the light incident part and transmit the remaining part of the optical signal to a half mirror corresponding to another signal processing means arranged in the latter stage, and the optical signal output means is a plurality of the plurality of half mirrors. 2. The optical system device according to claim 1, further comprising a plurality of reflection mirrors that reflect a plurality of optical signals output in parallel from the light emitting unit of the signal processing unit to the external unit.