JPH0712939Y2 - Light emitting element holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a light emitting element holding device for causing light emitted from a light emitting element to enter an appropriate position of a light receiving element, and particularly to an optical spectrum and optical power of the light emitting element. The present invention relates to a light emitting element holding device that is suitable for measurement such as.

[Prior Art] For example, when performing spectrum analysis or optical power measurement of a light emitting element such as LD or LED, or when measuring a loss wavelength characteristic of an optical fiber or an optical member using a white light source as a light emitting element, It is necessary to make the light emitted from the light emitting element incident on an appropriate position of the light receiving member. For this reason, conventionally, a light emitting element holding device as shown in FIG. 6 has been used. In the figure, a device main body 2 mounted on a base 1
An optical input connector 3 is provided on one surface of the optical fiber cord 3, and an optical fiber cord 4 is connected to the connector 3.
On the other hand, a head 7 holding an LD 6 which is a light emitting element is detachably attached to the surface of the apparatus body 2 opposite to the surface on which the connector 3 is provided. The head 7 is provided with a clamp member 9 whose lower half is opened downward by pressing the push button 8, and the LD 6 can be held by the clamp member 9.
Power is supplied to the pin 10 of the LD 6 held in this manner from the power cord 11 via the connection terminal 12 and the wiring 13, and the LD 6 is turned on and light can be sent to the optical fiber cord 4.

[Problems to be Solved by the Invention] According to the light emitting element holding device configured as described above, the LD 6 can be attached to and detached from the head 7 by pressing the push button 8. However, since the clamp member 9 holding the LD 6 has a constant shape and dimension, one type of LD
Only 6 could be held, and it was not possible to hold the light emitting elements of other shapes and sizes. Further, since the position of the optical input connector 3 which is a light receiving member is also fixed to the main body 2,
There was a problem that another head 7 had to be prepared when the shape and size of the can such as the LD 6 changed. Further, the optical axis cannot be adjusted so that the light emitted from the light emitting element LD6 is guided to the side of the input connector 3 which is the light receiving member in the optimum level state. Further, this type of device has a problem that the type of the optical fiber cord 4 used in the structure is limited.

The present invention has been made in view of the above circumstances, and various types of light emitting elements having different outer dimensions can be concentrically held by an automatic centripetal holder, the optical axis can be easily aligned, and the shape of the light emitting element can be easily adjusted. An object of the present invention is to provide a light emitting element holding device capable of changing the optical fiber accordingly.

[Means for Solving the Problems] A configuration for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The light emitting element holding device according to the present invention comprises a light emitting element holding portion 15 for holding a plurality of types of light emitting elements 53 having different outer dimensions concentrically by an automatic centripetal holder 20, and an optical fiber for receiving light emitted from the light emitting element 53. A light receiving member holding portion 16 for holding 51 and a resector puller 50 corresponding to the type of the optical fiber, and a moving base on which the light receiving member holding portion 16 is placed and which moves on a base 14 in three directions orthogonal to each other. 17
It is characterized by having and.

[Operation] According to the above configuration, the holding member 20 that holds the light emitting element 53.
Has an automatic centripetal effect, the center line does not move even if the type of the light emitting element 53 changes and the external dimensions change.
Hold 53 concentrically. Further, the light receiving member holder 16 holds the optical fiber 51 and the receptacle 50 attached according to the type of the optical fiber 51, and moves the movable table 17 on the base 14 in three directions orthogonal to each other. It is placed on the top, and the position in three directions can be finely adjusted. Therefore, the optical axis between the light emitting element 53 and the optical fiber 51 can be aligned with the optimum position.

[Embodiment] An embodiment of the light emitting element holding device according to the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention. In FIGS. 1 and 2, a light emitting element holding portion 15 and a moving base 17 on which a light receiving member holding portion 16 is mounted are fixed on a base 14 by a plurality of screws 18 and 19, respectively. Light emitting element holder 1
A ring-shaped automatic centripetal holder 20 is attached to 5 so that its center line is parallel to the base 14. This automatic centripetal holder 20, as shown in the exploded perspective view of FIG.
The inner ring 22 is rotatably fitted to the inner peripheral portion of the outer ring 21,
The spring 25 is suspended between the pins 23 and 24 respectively planted in the inner ring 22 and the inner ring 22, and the inner ring 22 is counterclockwise in the figure with respect to the outer ring 21 fixed to the light emitting element holding portion 15. It is urged to rotate. Further, on one side surface of the outer ring 21, three support shafts 26 equally arranged in the circumferential direction are provided, and one end of an arm 27 is rotatably supported by each support shaft 26. . A cylindrical portion 28 is provided at the other ends of these arms 27, and a long hole 29 is formed substantially at the center of the arms 27 in the width direction. Further, on the side surface of the inner ring 22, three guide pins protruding in the same direction as the support shaft 26 provided on the outer ring 21 are provided.
30 are evenly arranged in the circumferential direction, and the arm
It engages with a long hole 29 formed in 27. In addition, the outer ring 21
Lever 31, 32 are attached to the outer circumference of the inner ring 22 and the outer circumference of the inner ring 22 so as to project in the radial direction.
As shown in FIGS. 2 and 3, a locking screw 33 for positioning and locking the inner ring 22 with respect to the outer ring 21 is screwed. Incidentally, reference numeral 34 is a terminal block for connecting an unillustrated light emitting element held by the automatic centripetal holder 20 and an external power source, and reference numeral 35 is a terminal,
Reference numeral 36 is a bolt for fixing the terminal block 34 to the light emitting element supporting portion 15.

On the other hand, the movable table 17 has a first guide plate 37 fixed on the base 14.
The first moving plate 38 is moved by being guided in parallel with the axial direction of the holder 20, and the second moving plate 38 is moved by the second guide plate 39 fixed on the first moving plate 38. The second moving plate 40 that is horizontally guided and moves in a direction perpendicular to the direction, and the third guide plate 41 that is vertically installed on the second moving plate 40 guides the second moving plate 40 in the vertical direction. It is composed of a third moving plate 42 which is guided and moves. Moving plate 38,40,
42 are knobs 43, 44, provided on the guide plates 37, 39, 41, respectively.
By rotating 45, it is moved via a feed screw (not shown). The moving plates 38, 40, 42 are locked to the guide plates 37, 39, 41 by locking screws 46, 47, 48, respectively.

Further, an optical fiber receptacle 50 is attached to the third moving plate 42 via a bracket 49, and a connector 52 provided at the end of the optical fiber 51 is fitted into this receptacle 50. The receptacle 50 is configured to be compatible with a plurality of types of connectors by exchanging the receptacle 50 according to the type of the connector 52. Also,
The receptacle 50 is provided concentrically with the automatic centering holder 20. Further, the terminal end of the connector 52 connected to the receptacle 50 is connected to an optical spectrum analyzer, an optical power meter, etc. not shown, and in this device, the spectrum observation of the light emitting element 53 such as LD, LED or the like and the white light source are combined. We also measure loss wavelength characteristics of optical fibers, optical components, and optical materials.

Next, the operation of this embodiment will be described.

When attaching the light emitting element 53 to the automatic centripetal holder 20,
From the position of the inner ring 22 shown in the drawing, the lever 32 is rotated with respect to the lever 31 in the direction of arrow A against the urging force of the spring 25, and in the state shown in FIG. Each of them rotates about the support shaft 26 in the clockwise direction in the drawing. As a result, the cylindrical portion 28 separates, and the light emitting element 53 such as an LD is mounted between them. When the lever 32 is released after the mounting, the inner ring 22 is rotated in the direction opposite to the arrow A by the biasing force of the spring 25, the arm 27 is rotated counterclockwise in the figure, and the light emitting element 53 is divided into three cylinders. Department
Hold with 28. At this time, the center position of the light emitting element 53 is always constant regardless of the outer dimensions thereof.

On the other hand, the position of the optical fiber receptacle 50, which is the light receiving position, is set to 3 by turning the knobs 43, 44, 45 of the movable table 17 according to the power level of the light emitting element measured by an optical spectrum analyzer or an optical power meter. It is possible to finely adjust the positioning in the direction. Therefore, the light emitted from the light emitting element 53 is adjusted with the optimum level,
The optical axis between the optical axis and the receptacle 50 is adjusted. Further, the optical fiber 51 is connected to the receptacle 50 via the connector 52.
Since the connector 50 is fitted to the connector 52, by selecting the receptacle 50 according to the type of the connector 52, various kinds of optical fibers 51 can be connected according to the light emission level of the light emitting element 53. Therefore, the optical fiber 51 used has a core diameter of 50 μm when the spectrum of a laser diode is measured by an optical analyzer, for example, and when the spectrum of a laser diode is used, and the light emitting level of an LED light emitting element is low, a large core is used. By using a fiber with a diameter of 200 μm, applications can be expanded and efficient measurement can be performed.

According to the present embodiment, since the light emitting element 53 is held by the automatic centripetal holder 20, it is possible to hold many types of light emitting elements having different outer dimensions concentrically with the center line kept constant. Also,
Since the light receiving position can be finely adjusted by the movable table, the optical axis can be aligned at the optimum position. Moreover, by using the receptacle 50, various types of optical fibers can be attached to the light receiving section according to the light emission level of the light emitting element.

[Advantages of the Invention] As described above, according to the present invention, various types of light emitting elements having different outer dimensions can be concentrically held by the automatic centering holder, and the light receiving member holding portion can be finely moved in three directions via the moving base. Since it is held so that it can be adjusted, it is possible to easily hold multiple types of light-emitting elements with different external dimensions concentrically with one light-emitting element holding device, and fine-tune the light-receiving position to align the optical axis. The measurement work can be facilitated. Further, by using the receptacles according to the type of the optical fiber, it is possible to attach various kinds of optical fibers to the light receiving section according to the light emission level of the light emitting element.

[Brief description of drawings]

1 is a side view showing an embodiment of a light emitting element holding device according to the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an exploded perspective view showing an automatic centering holder of FIG. 4 and 5 are rear views showing the operation of the holder shown in FIG. 3, and FIG. 6 is a side view showing a conventional light emitting element holding device. 14 ... Base, 15 ... Light emitting element holding portion, 16 ... Light receiving member holding portion,
17 ... Moving base, 20 ... Automatic centering holder (holding member), 50 ... Receptacle (light receiving member), 51 ... Optical fiber (light receiving member), 53 ... Light emitting element.

Claims (1)

[Scope of utility model registration request] 1. A light emitting element holding portion (15) having an automatic centripetal holder (20) for concentrically holding a plurality of types of light emitting elements having different outer dimensions, and an optical fiber (51) for receiving light emitted from the light emitting element. ) And a light receiving member holding portion (16) for holding a resector pull (50) corresponding to the type of the optical fiber, and the light receiving member holding portion are placed, and they move in three directions perpendicular to each other on the base. A light emitting element holding device comprising a movable table (17).