JPS58207005A - Optical switch - Google Patents

Abstract

PURPOSE:To give easily a beam having various intensity, by switching selectively plural output optical fibers which connect an optical attenuator having a different optical attenuation factor to one end and an input optical fiber which connects one end to a light source. CONSTITUTION:A selection switching means 9 is operated by a pulse motor M, etc., the other end of an input optical fiber 2 can be connected selectively to Selfoc lenses 3, 4 and 5 in photoconductive relation, and a laser beam from the input optical fiber 2 is transferred to an optical fiber 6 as it is at a position A, the laser beam is transferred to an optical fiber 7 in the shape dispersed to two times at a position B, and the laser beam is transferred to an optical fiber 8 in the shape dispersed to five times at a position C. Accordingly, in accordance with switching the selection switching means 9 to the positions A, B and C, intensity of the beam becomes 1, 1/2 and 1/5 and it is transferred to the ends of the optical fibers 6, 7 and 8, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switching device, and sometimes relates to an optical switching device that can be applied to an optical welding device using a laser dead line or an optical η0 heating device.

Conventionally, printed circuit boards (made of epoxy material base etc.)
The circuit conductor gold is formed by etching a steel foil provided on the substrate, and is thus mass-produced. On the other hand, as child circuits become more complex and faster, it is becoming necessary to create three-dimensional circuit wiring. However, in order to create three-dimensional circuit wiring by multilayering a flat board such as a printed circuit board, the manufacturing process becomes complicated, design and production take time, and problems such as For.

There is a method of multiplexing thin wires on an insulating substrate using a heat bonding method or a wire wrap method, but these methods have caused other problems such as noise generation in high-speed circuits. . As a solution to this problem, a method has been proposed in which electrical wires coated with a thermal cIT adhesive are subsequently wired onto an insulating substrate using a laser beam, which can be used for several minutes. According to this method, it is possible to easily perform multiple wiring on one side of the edge board, since the wiring patterns can be clearly marked.
Wiring design is easier compared to planar wiring, noise generation in high-speed circuits can be reduced compared to the conventional thermal soldering method and wire wrap method in multiple wiring work, and it is possible to reduce the noise generation from the completion of the logic circuit diagram to the actual The time required for circuit board light Pj-t can be significantly shortened. Due to these many advantages, wiring by optical welding is gradually beginning to be widely used. However, for optical welding wiring, the optical heating temperature for welding the wire on the insulating substrate, This is because the optical heating temperature for fixing the wire core wire to the circuit conductor, etc., the optical heating temperature for cutting the electric wire at an appropriate position, etc. vary.

Light beams such as laser beams of various intensities are required, and at present, separate light sources suitable for them must be prepared.

In general, it is extremely troublesome and expensive to prepare various laser light sources, and it is difficult to actually design and produce a laser light source that is adjusted to the desired heating temperature. This is very likely. Therefore, in the past, the core wire was connected to the circuit conductor, regardless of whether it was a valley contact or a round wire contact.

After storing heat in the heat source r of a heater such as a heater.

It is attached by thermal conduction, and the cutting of %＠ is not done by light beam cutting but by mechanical cutting. Such conventional wiring work requires the preparation of various light sources for welding the wires onto the board, fixing the wire cores to the circuit conductors, cutting the wires, etc. They had to rely on munitions operations such as melting, electrical soldering, and mechanical cutting.

This resulted in extremely complicated work, which was time consuming and costly.

Yet again. Various circuit elements such as integrated circuit elements are mounted and connected to the f-lint board.

It was necessary to remove the circuit elements once installed. When installing and removing circuit elements, the size of the connecting pins differs greatly, so if you do not adjust the amount of heat applied appropriately, it may not be possible to install or remove the circuit elements properly, or the board may be damaged. This may lead to fM failure. Conventionally, such installation and removal is done by adjusting the amount of heat applied to each individual item using a short-tempered knob or a trowel, but this is a very tedious process and would be ideal to automate. Although it is possible to automatically perform heating using a laser beam, etc., the connection pin size varies when mounting a single circuit element, and in order to achieve the optimal heating for each, it is necessary to adjust the intensity of the light source such as a laser beam. There is currently no easy way to do this.

Considering such conventional technology, if there were a device that could easily provide laser beams of various intensities, it would be useful in a wide variety of fields. There is a demand for the emergence of such a device.

An object of the present invention is to provide an optical switching device that can easily provide round wires with excellent strength in response to such demands.

The Yo-lid switching device of the present invention has an input optical fiber that transmits light from a light source from one end to the other, and an input optical fiber having a different optical attenuation rate, and an attenuator of different types connected to one end. It is characterized by comprising an output optical fiber and a selection switching means for causing the other end of the input ``#, 7 eyeper'' to be in a photoconductive relationship with a selected one of the redundant output fibers. 1 Next, the present invention will be explained in detail with reference to the accompanying drawings, with reference to embodiments of the present invention.

FIG. 1 is a diagram showing the principle of a simple example of the inventive optical switching device. This optical switching device has a source fiber 2, such as a quartz fiber, which transmits one, for example, a YAG laser beam (wavelength 1.06μ) from the laser transmitter 1 from one end to the other, and has a different attenuation rate. A plurality, for example, three sets of output optical fibers, J6.7 and 8, each having optical attenuators 3.4 and 5 connected to one end thereof, and three sets of output optical fibers connected to the other end of input optical fiber no. 6. Selected 1 of 7 and 8
It is provided with a selection switching means 9 for establishing a photoconductive relationship with one of the two.

The output optical fiber 6 consists of one original fiber 6A, such as a 6-English fiber, paddle, etc., and the output cylinder main fiber 7 consists of two original fibers 97A and 7, such as quartz fiber, and has a high Optical fiber optics 8 consists of 5 optical fibers 8A, 8, 8C, 8D, and 8E, such as single capsule fibers. The power transmitter 3 transmits the laser beam from the source fiber 2 for human power directly to the optical fiber 6A with an optical attenuation rate of 1:
1 collimator (for example, 1 Nippon Sheet Glass Co., Ltd.'s Yoko Cellhock Lens, etc., referred to as Itcho Cellhock Lens).

The optical attenuator 4 is composed of a self-hock lens with an optical attenuation rate of 1:2 that disperses and transmits the laser f from the input optical fiber 2 to two optical fibers 7A and 7B. 5 is the 5 laser beams from the input optical fiber 2... former fiber optic 8A, 8th.

Light attenuation rate 1 distributed and transmitted to 8C18D and 8E:
It consists of 5 cell-hock lenses.

The selection switching means 9 is operated by a Zers motor M or the like, and connects the other end of the input 97 eyeper 2 to the self-hock lens 3,
4 and 5 selectively in a photoconductive relationship, and when in position A, the laser tS is connected from the human power fiber 2 to the output optical fiber 6 through three self-hock lenses. When C is transmitted as it is and is at the 1st position, the laser beam is transmitted from the manual optical fiber 2 through the self-hock lens 4 to the output trunk fiber 7 in a form dispersed into 21 tones, and C is placed vertically. , the laser beam is transmitted from the input fiber 2 through the self-hook lens 5 to the output fiber 8 in a five-fold dispersed form. Therefore, when the 1 selection switching means 9 is set at position A If the light intensity obtained at the 6th end of the output fiber is 1, then the light intensity obtained at the 7th end of the output fiber when the 1 selection switching means 9 is placed vertically is 1/2. When the selection switching means 9 is set to position C, the light intensity obtained at the end of the output fiber 8 is 115.

FIG. 2 is a schematic diagram showing a more specific example of the switching device shown in FIG. 1. As shown in FIG. 2, the cylindrical support frame 10 is equipped with human power
A hole 11 for passing through is formed at IL, and this hole 11
VC"" is used for installing the fiber 2 for human power by using the mantle tube 12.
A female thread IIA for insertion is formed. An opening 14 is provided in the middle upper part of the H-shaped support frame 10 for passing the rotation/yaft 13 of the instep 1, the instep, and the el smoke 1. As clearly shown in the partially enlarged view of FIG. 3, the tip of this rotating shaft 13 is
It is cut out so that a protrusion 13, A is formed. A through hole #116 is provided in the center of the protrusion 13A for inserting the other part of the single-person optical fiber 2 and fixing it there with the adhesive 15. Opening hole 14 and rotating shaft 1
The gap d1 between 0.3 and 0.3 is 0. [], approximately 3W. Furthermore, the cylindrical support frame 10 has holes 20.21 and 20.21 for mounting the self-hock lenses 3.4 and 5 and the output optical fibers 6.7 and 8 respectively with the sleeves 17.18 and 19. 22 is formed. 6 holes 20° 21 and 22 each have a corresponding attachment to the sleeve 17.
Iga screw 20A for screwing in 18 and 19.

21A and 22A are formed, respectively.

The cell-hock lenses 3.4 and 5 have Li-shaped lenses whose tips are open.
It is housed and fixed in 6 holes 20.21 and 22 so as to face the circumferential surface of
, h tFil between the rear end of the cell-hock lens and the tip of each nine fibers 6.7 and 8:! It is adapted to be screwed to six female screws 20A, 21A, and 22A so that d 2 can be adjusted.

9 When energizing the motor M, its rotation/yaft 1
3 is rotated in a stepwise manner, and at this time, the original fiber 2 is bent to the position shown by dotted lines due to its recursive nature, and the optical fiber 2, which was in a photoconductive relationship with the self-hock lens 4, is bent. The end portion is cut into a shape so as to be in a photoconductive relationship with the cell-hock lens 3 or the cell-hock lens 5. The cylindrical support frame 10 has mantra rotation stoppers 23 and 2.
4 is provided and the protruding portion 13A of the one-rotation shaft 13
rotating shaft 1 by engaging therein both ends of
The rotation of 3 is restricted, and the manual fiber 2 is damaged.
I try not to.

The optical switching device of the present invention has the above-mentioned structure,
/# By energizing the laser motor Mi, the input optical fiber 2 is switched to the output body fiber 6.7 or 8 via the optical attenuator 3.4 or 5. Since the optical attenuation rates of the attenuators 3.4 and 5 are different, the first output laser beams have different intensities,
The second output laser beam and the sixth output laser beam can be very easily provided from one laser beam source. That is, if the optical loss of the optical switch is ignored, the intensity of the first output laser beam from the output optical fiber 6 is the same as the intensity of the laser beam manually input to the input fiber 2, and the output The intensity of the second output laser beam from the optical fiber 7 is one half of the intensity of the laser beam input to the input fiber 2, and the intensity of the third output laser beam from the output fiber 8 is half that of the laser beam input to the input fiber 2. The intensity is one-fifth of the intensity of the laser beam input to the human power optical fiber 2. Fine adjustment of the light intensity of each output laser beam is performed by adjusting the interval md as described above.
This can easily be done by adjusting 2.

Furthermore, in the above-mentioned embodiment, switching is made to three sets of output optical fibers, but in the present invention,
The present invention is not limited to this, and it is possible to similarly switch to any number of sets of output fibers.

As is clear from what has been said above, the light of the immutable law - JJ
By using a v-type light source, it is possible to obtain various temporary light beams from one light source, so the light cutter of the present invention can be used for the above-mentioned light beam @ arrival, dead line welding, and "#S report". It is particularly effective when applied to cutting, beam heating, etc.

[Brief explanation of the drawing]

FIG. 1 of the accompanying drawings is a diagram showing the principle of an embodiment of the optical switching device of the present invention, FIG. 2 is a schematic diagram showing an example of a concrete implementation of the optical switching device shown in FIG. FIG. 3 is a partially enlarged perspective view of the optical switching device shown in FIG. 2. 1... Laser oscillator, 2... Source fiber for input, 3
．． 4.5...tKia t cell hook lens), 6.
7.8...Output optical fiber, 9...Selection switch 1
M...Zels motor, 10...Cylindrical support frame, 12...Mounting on sleeve, 13...Rotating shaft of pulse motor, 13A...Protrusion, ]4...Opening hole,
17.18.19... Installation is on the mantle, 23.24...
Abnormal rotation stopper Fig. 1 m-, -7 Me7) finm Fig. 3 υL-f

Claims (3)

[Claims] (1) A human-powered optical fiber that transmits all the light from a light source from one end to the other, and a plurality of output source fibers each connected to one end with an optical attenuator having a different optical attenuation rate;
An optical switching device characterized by comprising a selection switching means for causing the other end of the nine input fibers to be in a photoconductive relationship with a selected one of the plurality of output fibers. (2) A claim in which the optical attenuator is a self-hock lens having a different degree of dispersion, and the output optical fiber is composed of a number of original fibers according to the degree of dispersion of the corresponding self-hock lens. The optical switching device according to paragraph (1), (3) The selection switching means is configured such that the other end of the human power fiber is fully bent and bent toward each of the output fibers. (Optical switching device described in Section 11.