JP2936777B2 - Optical device module assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling apparatus for adjusting and joining an optical axis of an element module for connecting a light emitting element such as a semiconductor laser or a light emitting diode to an optical fiber.

[0002]

2. Description of the Related Art FIG. 3 is a view for explaining an example of the structure of a target optical element module and a conventional assembling apparatus.
In the figure, 1 is an optical element holder, 2 is a lens holder, 3
Is a receptacle, 4 is a light emitting element such as a semiconductor laser or a light emitting diode, 5 is a lens having a spherical, columnar or convex shape but has a function of condensing, 6 is an optical fiber, 7 is an optical fiber A terminal 8 is a Z-direction welding portion for welding the optical element holder 1 and the lens holder 2 to fix the Z direction, and 9 is an XY direction welding for welding the lens holder 2 and the receptacle 3 and fixing the XY direction. Locations 10 are gaps between the lens holder 2 and the receptacle 3.

[0003] The work targeted by the assembling apparatus is a work at a preceding stage in the work of adjusting and fixing the three components of the optical element holder 1, the lens holder 2 and the receptacle 3 to the optimum positions.
This is an operation of assembling the optical element holder 1 and the lens holder 2, and separately holding the optical element holder 1 and the lens holder 2.
The lens holder 2 is arranged above the optical element holder 1,
A mechanism for adjusting the relative position of the optical element holder 1 and the lens holder 2 in the vertical direction is provided. When the optical element holder 1 and the lens holder 2 are fitted to each other, the overlapping portion is irradiated with laser light to irradiate the optical element holder. The present invention relates to an optical device module assembling apparatus for assembling a lens holder 1 and a lens holder 2.

Light emitted from the light emitting element 4 is condensed by a lens 5, enters an optical fiber 6, and is emitted to an external device from the opposite side of the optical fiber 6 held by an optical fiber terminal 7. The optical element holder 1 is adjusted in the vertical direction based on the lens holder 2 on which the receptacle 3 is mounted, and there is a position where the amount of light to the optical fiber 6 is within a specified range. The optical element holder 1 and the lens holder 2 are fixed by simultaneously emitting a YAG laser from the welding point 8a and the welding point 8b in the Z direction.

The optical element holder 1 is vertically moved (Z direction) with respect to the lens holder 2 on which the optical fiber 6 is mounted, with reference to the tip of the optical fiber terminal 7 inserted into the receptacle 3.
The optical element holder 1 is adjusted with reference to the tip of the optical fiber 6.
And the lens holder 2 are simultaneously adjusted in the X and Y directions, and the adjustment in the vertical direction (Z direction) and the adjustment in the X and Y directions are repeated, so that there is a position where the amount of light to the optical fiber 6 is within a specified range. However, in this state, the optical element holder 1 and the lens holder 2 are fixed by simultaneously emitting a YAG laser from the Z-direction welding point 8a and the Z-direction welding point 8b.

As a work after the optical element holder 1 and the lens holder 2 are assembled as described above, the optical element holder 1 and the lens holder 2 are further adjusted to adjust and fix the receptacle 3 at an optimum position. At the same time, it moves in two axes in the horizontal direction and adjusts to a position where the amount of light to the optical fiber 6 inserted into the receptacle 3 is maximized. In this state, the XY-direction welding spot 9a and the XY-direction welding spot 9b are simultaneously moved. YA
By emitting a G laser to fix the lens holder 2 and the receptacle 3, a product of the optical element module is completed. At this time, since the gap 10 in a state of being inclined between the optical element holder 1 and the receptacle 3 is eliminated, and if the YAG laser welding is not performed, an axis shift occurs, so that an operation for eliminating the gap 10 is performed.

[0007]

Since the conventional optical device module assembling apparatus is constructed as described above, if the lens holder 2 and the receptacle are tilted and the YAG laser is emitted and fixed, the axial deviation will occur. Not only do they need to be assembled with no gaps, but also in the process of fixing the optical element holder and lens holder, the receptacle must be made from the actual product that is used as a product due to part processing tolerances. There is a problem that the performance is not obtained and it takes a long time even when a skilled worker assembles.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. In an operation process for fixing an optical element holder and a lens holder, an optical element module without an actual receptacle used as a product is used. It is intended to provide a device that can be assembled.

[0009]

According to the present invention, there is provided an optical fiber as a jig for receiving light emitted from an optical element by contacting a tip with a lens holder at a point, and a lens holder based on the tip of the optical fiber. Assembling is performed by means for simultaneously adjusting the optical element holder in two axes in the horizontal direction and means for adjusting the optical element holder in the vertical direction based on the lens holder.

[0010]

By using the optical fiber as a jig without using the receptacle of the product to measure the power of the light emitted from the optical element, the tip of the optical fiber is measured by the means configured as described above. Makes contact with the lens holder at a point, the lens holder and the optical element holder can be simultaneously adjusted in two horizontal axes based on the tip of the optical fiber, and the optical element holder can be adjusted vertically with respect to the lens holder. Be able to adjust.

[0011]

【Example】

Embodiment 1 FIG. FIG. 1 is a view for explaining an optical device module assembling apparatus according to one embodiment of the present invention.
Reference numerals 2, 4 to 6, and 8 are exactly the same as those described in the conventional method, and reference numeral 11 denotes a spherical optical fiber terminal.

As shown in FIG. 1, light emitted from the light emitting element 4 is condensed by a lens 5 and is incident on an optical fiber 6 to be emitted from an opposite side of the optical fiber 6 held by an optical fiber terminal 7 to an external device. Is done. Without using the product of the receptacle 3, the optical fiber 6 whose tip is made small and spherical is brought into contact with the lens holder 2 at a point, and the optical element holder 1 is placed on the basis of the lens holder 2 on which the optical fiber 6 is mounted. Vertical direction (Z
Direction), the optical element holder 1 and the lens holder 2 are simultaneously adjusted in the XY directions with the tip of the optical fiber 6 as a reference, and the adjustment in the vertical direction (Z direction) and the adjustment in the XY directions are repeated. The amount of light to the fiber 6 is adjusted so as to be within a specified range, and in this state, a YAG laser is simultaneously emitted from the Z-direction welding point 8a and the Z-direction welding point 8b to move the optical element holder 1 and the lens holder 2 together. Fix it.

Embodiment 2 FIG. FIG. 2 is a view showing an assembling apparatus according to an embodiment of the present invention. Reference numerals 1, 2, and 6 are exactly the same as those in the description of the conventional method. 12 is a straight stage, 13 is a vertical stage, 14 is a light emitting device holder, 15
Is a lens holder holder, 16 is an optical fiber terminal holder,
17 is a vertical surface plate, and 18 is a horizontal surface plate.

As shown in the stage configuration of FIG.
8, a linear stage 12a that moves linearly and a linear stage 12b that moves in a right angle direction on the linear stage 12a are overlapped with each other, and can be moved in the XY two-axis direction on a plane. And the upper and lower stages 13
Further, the optical element holder 1 and the lens holder 2 are mounted thereon via the light emitting device holder 14, and the optical element holder 1 is driven by the upper and lower stages 13 with the lens holder 2 on which the optical fiber 6 is placed as a reference, so that the vertical direction ( (Z direction), and the optical element holder 1 and the lens holder 2 based on the tip of the optical fiber 6.
At the same time, the linear stage 12a and the linear stage 12b moving in a straight line are adjusted in the XY biaxial directions, and the adjustment in the vertical direction (Z direction) and the adjustment in the XY directions are repeatedly performed, so that the light to the optical fiber 6 is adjusted. Is adjusted so as to fall within a specified range, and in this state, the optical element holder 1 and the lens holder 2 are fixed by simultaneously emitting a YAG laser from the Z-direction welding point 8a and the Z-direction welding point 8b. Here, the lens holder holding section 15 is fixed on the rectilinear stage 12 b and holds the lens holder 2, and the optical fiber terminal holding section 16 is fixed on the vertical surface plate 17 and the spherical optical fiber terminal 11. , And the vertical surface plate 17 is fixed to the horizontal surface plate 18.

By configuring the stage in this way,
The optical element holder 1 and the lens holder 2 are simultaneously adjusted in the XY directions with respect to the spherical optical fiber
Can be adjusted in the Z direction, and the spherical fiber end 11 is in point contact with the center of the lens holder 2 in the horizontal direction, so that even if the upper end surface of the lens holder 2 is slightly inclined, As in the case where the receptacle 3 of the method is used, there is no longer any misalignment at the tip of the spherical optical fiber terminal 11, and the tilting operation in two axes for bringing the lens holder 2 and the receptacle 3 into close contact with each other becomes unnecessary, and
The work of assembling the lens holder 2 and the receptacle 3 can be separated as a separate step, and the production tact time can be reduced.

In the above description, the YAG laser welding in the X and Y directions and the YAG laser welding in the Z direction have been described as if the number of divisions was two. However, this is for convenience of explanation. Needless to say, this is not the case. Further, in the above embodiment, a light emitting element is described as an example of an optical element. However, it can be easily inferred that a light receiving element can be produced with the same method and apparatus by reversing the direction of light.

[0017]

[Effect of the Invention] Ri Contact this invention has been described above, by which to allow the assembly of the lens holder and the optical element holder using a fiber-<br/> optic with less process, the conventional skilled operator Can easily perform the assembly work of the optical element module which has been performed for a long time.

[Brief description of the drawings]

FIG. 1 is a view for explaining an assembling apparatus according to an embodiment of the present invention.

FIG. 2 is a view showing an assembling apparatus according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining an example of the structure of an optical element module to be processed and a conventional assembling apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical element holder 2 Lens holder 3 Receptacle 4 Light emitting element 5 Lens 6 Optical fiber 7 Optical fiber terminal 8 Z direction welding point 9 XY direction welding point 10 Gap 11 Spherical optical fiber terminal 12 Straight stage 13 Vertical stage 14 Light emitting device holder 15 Lens holder holder 16 Optical fiber terminal holder 17 Vertical platen 18 Horizontal platen

Claims (1)

(57) [Claims] 1. A mechanism for separately holding an optical element holder and a lens holder, disposing a lens holder above the optical element holder, and adjusting a relative position of the optical element holder and the lens holder in the optical axis direction. , in a state of being fitted optical device holder and the lens holder, the optical element holder and the lens holder
In the assembling apparatus for an optical element module to be welded , the tip comes into contact with the lens holder at a point, and optical coupling with the optical element is performed.
Means for adjusting a biaxial directions perpendicular to the optical axis and the optical fiber and the optical element holder relative to the distal end of the optical fiber to the lens holder to the optical axis the optical element holder relative to said lens holder An optical device module assembling apparatus, comprising: means for adjusting by means of: