JPH0213912A - Method and device for positioning optical circuit parts - Google Patents

Abstract

PURPOSE:To manufacture an optical circuit module being free from optical misalignment and having high accuracy by bringing optical circuit parts which are positioned and placed on a positioning device to vacuum adsorption as they are to the positioning device. CONSTITUTION:First of all, a cylindrical optical element 1 being optical circuit parts and an optical fiber use sleeve 2 are positioned and placed along a semi- cylindrical groove 6 and a projection 9 of a positioning device 5 placed in a position corresponding to a prescribed position on a substrate 3, respectively, and in such a state, by bringing a vacuum adsorption use hole 7 to vacuum exhaust, separate parts 1, 2 are adsorbed and fixed onto the positioning device 5. Thereafter, the substrate 3 on which a sticking material 4 is applied to a parts loading position is positioned by utilizing a height setting block 10 of the positioning device 5 and a substrate stopper 11, a weight 12 is placed on the substrate 3, and in a state that the parts 1, 2 are adsorbed and fixed to the positioning device 5, its state is held until the sticking material 4 is solidified completely. In such a way, stable assembly accuracy being free from an optical misalignment is obtained as an optical circuit module.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for positioning optical circuit components for manufacturing optical circuit modules used in optical communication systems.

[Conventional technology]

When manufacturing an optical circuit module by combining multiple optical circuit components, precision adjustments are usually made to align the optical axes of the components, but here is a method for assembling an optical circuit module without making such adjustments. As, JP-A-61-12101
As described in No. 2, after positioning and arranging individual optical circuit components on this positioning device using a positioning device with grooves and protrusions for arranging individual optical circuit components at predetermined positions on the board. , Is it soft wax or solder in that state? ′
Attempts have been made to fix it to the substrate using a single agent.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into consideration the means for fixing the component in that state after placing it along the grooves or protrusions of the positioning device. Because the stress generated by shrinkage when these solidify is not uniform, the parts may move from their original positions along the grooves and protrusions of the positioning device, and may become stuck to the board due to positional or angular misalignment. There was a problem in that the optical axes of the assembled components were misaligned, and sufficient assembly accuracy could not be obtained as an optical circuit module.

An object of the present invention is to provide a method for positioning optical circuit components and a positioning device therefor, which eliminates such positional and angular deviations that occur when optical circuit components are fixed to a substrate, and enables assembly without adjustment. be.

[Means for Solving the Problems] In order to achieve the second object, the method for positioning optical circuit components according to the present invention uses grooves and protrusions for arranging individual cylindrical components at predetermined positions on a substrate. When manufacturing an optical circuit module consisting of a plurality of cylindrical parts fixed to a predetermined position on a board with soft solder or adhesive, the cylindrical parts are positioned on the positioning apparatus. After placement, it is characterized in that it is fixed to the substrate while being vacuum-adsorbed to a positioning device to prevent positional and angular deviations.

Further, the optical circuit component positioning device according to the present invention includes a semi-cylindrical groove that fits into the outer periphery of the cylindrical component at a position corresponding to a predetermined position on the board, and restricts movement of the cylindrical component in the optical axis direction. The device is characterized in that a vacuum suction hole is connected to a vacuum pump and has a protrusion that opens into the semi-cylindrical groove.

[Effect]

According to the positioning method of the present invention, the cylindrical parts placed along the grooves and protrusions on the positioning device are fixed in the same position by vacuum suction.

Due to the surface tension of the molten solder or adhesive when it is fixed to the substrate, and the stress generated when these solidify. There is no possibility of positional or angular misalignment of parts.

In particular, if the positioning device of the present invention is used, a cylindrical component can be positioned by accurately aligning the optical axes of the components with the precision fit with the semi-cylindrical groove and the protrusion that serves as a stopper in the optical axis direction. Since the vacuum suction hole opened in the semi-cylindrical groove allows the component to be suctioned and fixed onto the positioning device and fixed to the substrate, stable assembly accuracy without optical axis deviation can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In Figures 1 and 2, a 5-cylindrical optical element 1 has a light-emitting element or a light-receiving element built into a cylindrical package, and the inner and outer periphery of the cylindrical package is precisely machined and is coaxial with the built-in element. It is in.

Further, the inner and outer peripheries of the optical fiber sleeve 2 are also precisely machined in the same manner as the cylindrical optical element package, and are coaxial with the optical fiber inserted therein.

The figure shows an example in which an optical circuit module is constructed by fixing three cylindrical optical elements, which are optical circuit components, and one optical fiber sleeve to predetermined positions on a substrate 3.

The positioning device 5 has a semi-cylindrical groove 6 formed at a position corresponding to a predetermined position on the substrate 3 to fit into the outer periphery of each of the cylindrical optical element 1 and the optical fiber sleeve 2,
This semi-cylindrical groove 6 is precisely machined with high precision so that the optical axes of the mounted cylindrical optical element 1, the optical fiber sleeve 2, and the optical elements coincide with each other. Further, in the semi-cylindrical groove 6, a cylindrical optical element 1 and an optical fiber sleeve 2 are provided.
When fixing the substrate 3 to the substrate 3, vacuum suction holes 7 are opened to prevent positional and angular deviations due to surface tension generated by the fixing material 4 such as soft wax or adhesive or stress during shrinkage. This vacuum suction hole 7 is connected to a vacuum pump (not shown) via a nozzle 8. Furthermore, the positioning device 5 includes a protrusion 9 that serves as a collar for regulating the movement of the cylindrical optical element 1 and the optical fiber sleeve 2 in the optical axis direction, and a protrusion 9 that serves as a collar for controlling the movement of the cylindrical optical element 1 and the optical fiber sleeve 2 in the optical axis direction. and a height setting block 1o for regulating the positional deviation of the optical fiber sleeve 2, and a substrate stopper 1 for regulating the mounting position of the cylindrical optical element 1 and the optical fiber sleeve 2 with respect to the substrate 3.
1 is provided. In addition, a weight 12 to be placed on the substrate 3 is provided in order to more stably fix the cylindrical optical element 1 and the optical fiber sleeve 2 to the substrate 3.

The procedure for assembling the optical circuit module is to first assemble the cylindrical optical element 1, which is an optical circuit component, and the optical fiber sleeve 2.
The positioning device 5 is positioned and arranged as shown in FIG. 2 along the semi-cylindrical groove 6 and the protrusion 9, which are respectively located at predetermined positions on the substrate 3, and in this state, the vacuum suction hole 7 is evacuated. By doing so, the individual parts 1 and 2 are suctioned and fixed onto the positioning device 5. Then, the board 3 coated with the fixing material 4 is positioned at the component mounting position using the height setting block 10 and board stopper 11 of the positioning device 5, and the weight 12 is placed on the board 3. Hold the parts 1 and 2 by suction and fixation until the fixing material 4 is completely solidified.

FIG. 3 shows an optical circuit module assembled by the above method. The optical circuit module is completed by inserting and fixing the optical fiber 13 into the optical fiber sleeve 2.

〔Effect of the invention〕

According to the optical circuit component positioning method and positioning device of the present invention, the optical circuit component positioned on the positioning device is vacuum-adsorbed to the positioning device in that state, thereby positioning the optical circuit component when it is fixed to the substrate. The optical circuit module can be fixed at a predetermined position on the cutting board without causing any deviation or angular deviation, and thereby a high-precision optical circuit module without optical axis deviation can be manufactured at low cost.

[Brief explanation of the drawing]

1 is a perspective view of a positioning device, an optical circuit component, and a board according to an embodiment of the present invention; FIG. 2 is a sectional view showing a state in which the positioning device shown in FIG. 1 is being assembled; FIG. 3 is a perspective view of an optical circuit module assembled using this positioning device. 1. A cylindrical optical element which is an optical circuit component, 2. An optical fiber sleeve which is an optical circuit component, 3. A substrate. 4. Fixing material, 5. Positioning device, 6. Semi-cylindrical groove. 7 ・Vacuum suction hole, 8...Vacuum pump connection nozzle. 9 ・Protrusion that serves as a stopper. 1st mouth 2nd figure

Claims (1)

[Claims] 1. Using a positioning device formed with grooves and protrusions for arranging individual cylindrical parts at predetermined positions on a substrate,
When manufacturing an optical circuit module consisting of a plurality of cylindrical parts fixed to a predetermined position on a board with soft solder or adhesive, after the cylindrical parts are positioned on a positioning device, there are no misalignments or angular deviations. A method for positioning an optical circuit component, which is characterized in that the component is fixed to a substrate while being vacuum-adsorbed by a positioning device so as not to cause damage. 2. In a positioning device used when manufacturing an optical circuit module consisting of a plurality of cylindrical parts fixed to a predetermined position on a board with soft solder or adhesive, the The vacuum pump has a semi-cylindrical groove that fits into the outer periphery of a cylindrical part, a protrusion that restricts movement of the cylindrical part in the optical axis direction, and a vacuum suction hole that opens in the semi-cylindrical groove. 1. A positioning device for optical circuit components, characterized in that the device is connected to the optical circuit component.