JP2010040744A - Burn-in testing apparatus - Google Patents

Abstract

In a burn-in test apparatus, manufacturing cost is further suppressed.
A burn-in test apparatus includes an apparatus base, light output module heating units and for heating a light output module, and light receiving means for receiving signal light emitted from the light output module. The light output module heating unit includes a light output module substrate 32, a plurality of sockets 34 arranged in a lattice pattern on the light output module, to which the light output module is mounted, and a heating base having a heating element for heating the light output module. 36 and a heating cover 38 that covers the heating base, and the light receiving means 26 slides on the guide rails 60 and 62 provided in a substantially parallel direction with respect to the sockets 34 arranged in the row direction. A slider 64 on which a plurality of light receiving elements 84 that receive signal light emitted from the output module are placed, and a conveyor belt 6 that conveys the slider When, and a conveyor belt motor 68.
[Selection] Figure 2

Description

  The present invention relates to a burn-in test apparatus, and more particularly to a burn-in test apparatus that performs a burn-in test of an optical output module equipped with a light emitting element.

  In order to guarantee the reliability of a light output module mounted with a light emitting element such as a laser diode and packaged in a TO-CAN package, a burn-in test, which is a temperature voltage acceleration test, is performed on the light output module. The burn-in test is a test for detecting an initial failure of the light output module by energizing the light output module exposed to a predetermined test temperature. In the burn-in test, a burn-in test apparatus is used that can test a laser beam emitted from the light output module with a light receiving element such as a photodiode while the light output module is heated in a thermostat or the like. The

Japanese Patent Laid-Open No. 2004-228688 provides a burn-in method and burn-in apparatus capable of improving work efficiency and energy efficiency, and is provided corresponding to each of a plurality of devices on the burn-in board and has flexible heat. A burn-in method comprising a step of heat-contacting a plurality of members coupled to each other by a conductive member to a plurality of devices, and a step of collectively controlling the temperature of the plurality of members, and a plurality of devices on the burn-in board A burn-in device is disclosed that includes a plurality of members that can make heat transfer contact with each other and a flexible heat conduction member that couples the members.
JP 2006-317403 A

  By the way, in the burn-in test of the light output module, as described above, the laser light emitted from the heated light output module is received by a light receiving element such as a photodiode and tested. For this reason, the burn-in test apparatus generally requires approximately the same number of light receiving elements as the number of light output modules to be tested. Here, if the number of light output modules that are heated and tested at the same time increases, the number of light receiving elements mounted on the burn-in test apparatus also increases, which may increase the manufacturing cost of the burn-in test apparatus.

  Therefore, an object of the present invention is to provide a burn-in test apparatus that further suppresses the manufacturing cost of the test apparatus.

  A burn-in test apparatus according to the present invention is a burn-in test apparatus for performing a burn-in test of a light output module equipped with a light emitting element. The burn-in test apparatus is disposed on a device base and the device base, and a plurality of light output modules are mounted. A light output module heating unit that heats the light output module; and a light receiving unit that is disposed on the device base and that receives signal light emitted from the light output module, the light output module heating unit comprising: A light output module substrate for supplying power to the light output module; a plurality of sockets arranged in a grid pattern on the light output module substrate; and a plurality of sockets into which the sockets are inserted. An insertion groove and a plurality of light output module insertion grooves that are communicated with the socket insertion groove and into which the light output module is inserted are provided. A heating base having a heating element that heats the light output module, and a heating cover that has a plurality of openings through which the signal light emitted from the light output module passes and covers the heating base. The light receiving means is provided on the device base with the light output module heating unit sandwiched therebetween, and a pair of guide rails provided in a direction substantially parallel to the row direction of the sockets arranged in a lattice shape, One end and the other end are slidably attached to a pair of guide rails, a slide base provided in a direction substantially parallel to the row direction of the sockets arranged in a lattice shape, and provided in the slide base in a row direction Arranged substantially in the same straight line as the sockets arranged in a row, arranged in a row in a direction substantially parallel to the sockets arranged in a row direction, and emitted from the light output module. A slider including a plurality of light receiving elements that receive the signal light, a slider that is provided on the device base in a direction substantially parallel to the pair of guide rails, and that transports the slider; And a carrier driving unit that is disposed on the apparatus base and drives the carrier.

  In the burn-in test apparatus according to the present invention, the heating cover preferably has a glass plate covering the opening.

  In the burn-in test apparatus according to the present invention, it is preferable that a washer member is provided between the light output module attached to the socket and the heating cover.

  In the burn-in test apparatus according to the present invention, it is preferable that the light receiving element has a light receiving area larger than an actual light receiving area where the signal light emitted from the light output module is received.

  According to the burn-in test apparatus having the above configuration, the number of light receiving elements mounted in the burn-in test apparatus can be reduced, so that the manufacturing cost of the test apparatus can be suppressed.

  Embodiments of the present invention will be described below with reference to the drawings. First, the light output module tested by the burn-in test apparatus will be described. FIG. 1 is a cross-sectional view showing a schematic configuration of the light output module 10. The light output module 10 includes a stem 12, a light emitting element 14 disposed on the stem 12, a CAN cap 16 that covers the light emitting element 14, and a lead pin 18 provided on the stem 12.

  The stem 12 is formed in a substantially disk shape, for example, and is formed of a metal material such as stainless steel.

  The light emitting element 14 is mounted on one surface of the stem 12 and has a function of emitting signal light such as laser light. The light emitting element 14 outputs signal light such as laser light by photoelectrically converting the input electric signal. As the light emitting element 14, for example, a light emitting semiconductor element such as a laser diode (LD), a light emitting diode (LED), or a surface emitting laser (VICSEL: Vertical Cavity Surface Emitting Laser) is used.

  The CAN cap 16 is provided in a cylindrical shape and has a function of covering the light emitting element 14. The CAN cap 16 is attached and fixed to the stem 12. The CAN cap 16 is formed of, for example, a metal material such as stainless steel. The CAN cap 16 has an opening for allowing the signal light emitted from the light emitting element 14 to pass through at a portion facing the light emitting element 14. A condensing lens 19 that condenses the signal light emitted from the light emitting element 14 is preferably provided in the opening of the CAN cap 16.

  The lead pin 18 is provided substantially perpendicular to the other surface of the stem 12 and is formed of a metal material such as copper, which is a conductive material.

  Next, the burn-in test apparatus 20 will be described.

  FIG. 2 is a diagram showing a configuration of the burn-in test apparatus 20, FIG. 2 (a) is a top view of the burn-in test apparatus 20, and FIG. 2 (b) is a side view of the burn-in test apparatus 20. The burn-in test apparatus 20 is disposed on the apparatus base 22, the apparatus base 22, the light output module heating units 24 and 25 that are mounted with the plurality of light output modules 10 and heat the light output module 10, and the apparatus base And a light receiving means 26 for receiving the signal light emitted from the heated light output module 10.

  The device base 22 is formed in a substantially rectangular shape, and is formed of, for example, a metal material such as stainless steel. A cable bear 23 is provided at one end of the device base 22.

  The light output module heating units 24 and 25 are disposed on the device base 22 and have a function of heating the light output module 10 by mounting the plurality of light output modules 10. In the burn-in test apparatus 20 shown in FIG. 2, two light output module heating units 24 and 25 are arranged on the apparatus base 22, but at least one light output module heating part is provided on the apparatus base 22. Just do it. FIG. 3 is a cross-sectional view in the A direction of the light output module heating unit 24 shown in FIG.

  The light output module heating unit 24 is provided on one surface of the light output module substrate 32, the light output module substrate 32, the plurality of sockets 34 in which the plurality of light output modules 10 are mounted, and the plurality of light output modules 10. And a heating cover 38 that covers the heating base 36.

  The light output module substrate 32 has a function of supplying power to the light output module 10. For the optical output module substrate 32, a power supply plate used in the optical output module 10 is generally used.

  The plurality of sockets 34 are arranged on one surface of the light output module substrate 32, and the plurality of light output modules 10 to be tested are mounted. In general, the socket 34 used in the optical output module 10 is used as the socket 34.

  The plurality of sockets 34 are arranged in a grid pattern on the light output module substrate 32. For example, ten sockets 34 are arranged in the column direction and ten sockets 34 are arranged in the row direction on the optical output module substrate 32, and a total of 100 sockets 34 are provided.

  The heating base 36 is provided on the surface of the light output module substrate 32 where the light output module 10 is mounted, and has a function of heating the plurality of light output modules 10 to be tested. The heating base 36 is preferably formed of a metal material having excellent thermal conductivity such as an aluminum alloy or copper.

  The heating base 36 is formed with a plurality of socket insertion grooves 40 into which the sockets 34 are inserted, and a plurality of light output module insertion grooves 42 that communicate with the socket insertion grooves 40 and into which the light output module 10 is inserted. .

  The socket insertion groove 40 has a groove width larger than the outer diameter of the socket 34. Moreover, it is preferable from the point of heat insulation that the depth of the socket insertion groove | channel 40 is substantially the same as the height of the socket 34, for example.

  The light output module insertion groove 42 has a groove width larger than the outer diameter of the stem 12 in the light output module 10, and the groove cross section is formed in a substantially circular shape. The optical output module insertion groove 42 is formed to have a predetermined depth.

  The communication hole 43 communicating with the socket insertion groove 40 and the light output module insertion groove 42 has a diameter smaller than the outer diameter of the socket 34 and the outer diameter of the stem 12 of the light output module 10. Accordingly, the socket 34 comes into contact with the bottom of the socket insertion groove 40, and the light output module 10 is mounted with the stem 12 in contact with the bottom of the light output module insertion groove 42. Further, the lead pin 18 of the light output module 10 is fitted into the socket 34 through the communication hole 43, and the light output module 10 and the socket 34 are electrically connected.

  The plurality of socket insertion grooves 40 and the plurality of light output module insertion grooves 42 are formed in a lattice shape. In the heating base 36, for example, ten socket insertion grooves 40 in the column direction and ten socket insertion grooves 40 in the row direction are formed, and a total of 100 socket insertion grooves 40 are provided. Further, for example, 10 light output module insertion grooves 42 in the column direction and 10 light output module insertion grooves 42 in the row direction are formed in the heating base 36, for a total of 100 light output modules. An insertion groove 42 is provided.

  The heating base 36 includes a heating element 44 that heats the plurality of optical output modules 10 mounted in the plurality of sockets 34. For example, a plurality of heating elements 44 are arranged in a state of being embedded in the heating base 36. The heat generated from the heating element 44 is transmitted through the heating base 36 made of a metal material, and heats the space region 45 surrounded by the heating base 36 and the heating cover 38. Thereby, the light output module 10 mounted on the socket 34 is heated. A general heater can be used as the heating element 44.

  The heat insulator 48 is provided on the surface opposite to the surface on which the socket 34 of the light output module substrate 32 is disposed, and has a function of insulating heat released from the light output module substrate 32 side. The heat insulator 48 is formed of, for example, a heat insulating material made of glass fiber or the like.

  The heating cover 38 is attached to the heating base 36 and has a function of covering the heating base 36. Since the release of heat is suppressed by covering the heated light output module 10 with the heating cover 38, the light output module 10 can be heated more uniformly. The heating cover 38 is formed of a metal material such as an aluminum alloy or copper, for example. The heating cover 38 is attached to the heating base 36 with screws, magnets, clamps or the like.

  The heating cover 38 has a plurality of openings 50 through which signal light such as laser light emitted from the light output module 10 passes at a portion facing the light output module 10 mounted on the socket 34. The plurality of openings 50 are formed in a lattice shape. In the heating cover 38, for example, ten openings 50 are formed in the column direction, ten openings 50 are formed in the row direction, and a total of 100 openings are provided.

  The heating cover 38 preferably includes a glass plate that covers the opening 50 and can transmit signal light such as laser light. By closing the opening 50 with the glass plate 52, the release of heat from the opening 50 to the outside can be suppressed. Further, by closing the opening 50 with the glass plate 52, a temperature rise of the light receiving element 84 described later can be suppressed. The glass plate 52 is preferably a quartz glass plate.

  The washer member 54 is sandwiched between the heating cover 38 and the CAN cap 16 of the light output module 10, and the stem 12 of the light output module 10 is sufficiently brought into close contact with the groove bottom of the light output module insertion groove 42. It has a function. The inner diameter of the washer member 54 is formed larger than the opening 50 provided in the heating cover 38 and smaller than the outer diameter of the CAN cap 16. The washer member 54 is preferably molded from, for example, a heat resistant rubber material.

  The temperature sensor 46 is disposed on the heating base 36 or the heating cover 38 and has a function of measuring the temperature of the space region 45 surrounded by the heating base 36 and the heating cover 38. The temperature sensors 46 are provided at a plurality of locations in order to make the temperatures of the plurality of light output modules 10 attached to the socket 34 more uniform. For the temperature sensor 46, for example, a thermocouple or a resistance temperature detector is used.

  Next, returning to FIG. 2 again, the light receiving means 26 for receiving the signal light emitted from the heated light output module 10 will be described.

  The light receiving means 26 includes a pair of guide rails 60 and 62 provided on the apparatus base 22, a slider 64 that slides on the pair of guide rails 60 and 62, a transport belt 66 that transports the slider 64, and a transport belt 66. A conveyor belt motor 68 to be driven.

  The pair of guide rails 60 and 62 are provided on the apparatus base 22 with the light output module heating units 24 and 25 sandwiched therebetween. The pair of guide rails 60 and 62 are arranged in a direction substantially parallel to the row direction of the plurality of sockets 34 arranged in a lattice shape. The pair of guide rails 60 and 62 is formed of, for example, a metal material such as stainless steel.

  The slider 64 includes a first slide portion 70 that slides on one guide rail 60 of the pair of guide rails 60, 62, a second slide portion 72 that slides on the other guide rail 62, and one end on the first slide portion 70. The slide base 74 is fixed, has the other end fixed to the second slide portion 72, and is provided in a direction substantially orthogonal to the direction of the pair of guide rails 60 and 62. The first slide part 70 and the second slide part 72 have a plurality of guide members 78 that slidably hold the width direction of the guide rails 60 and 62 and protrude downward in the vertical direction. The 1st slide part 70, the 2nd slide part 72, and the slide base | substrate 74 are shape | molded, for example with metal materials, such as stainless steel.

  The light receiving body 79 includes a light receiving base 80 attached to the slide base 74, a light receiving element substrate 82 disposed on the light receiving base 80, and a plurality of light receiving elements 84 disposed on the light receiving element substrate 82. The light receiving element 84 has a function of receiving signal light such as laser light emitted from the heated light output module 10 and outputting an electric signal by photoelectric conversion. For the light receiving element 84, for example, a light receiving semiconductor element such as a photodiode (PD: Photo Diode) is used.

  The plurality of light receiving elements 84 are provided in substantially the same straight line as the sockets arranged in the row direction (X direction), and are arranged in a row in a direction substantially parallel to the sockets arranged in the column direction (Y direction). Is done. The plurality of light receiving elements 84 are preferably arranged in the same number as the number of sockets 34 arranged in the column direction (Y direction). The slider 64 is slid in the row direction (X direction) of the plurality of sockets 34 arranged in a grid pattern, and the plurality of light output modules 10 mounted in the sockets 34 arranged in the column direction (Y direction) are substantially simultaneously. This is for testing.

  For example, in the case where ten sockets 34 are arranged in the column direction (Y direction), ten light receiving elements 84 are arranged in a row in the light receiving body 79. Accordingly, the ten light output modules 10 mounted on the ten sockets 34 arranged in the column direction (Y direction) can be tested substantially simultaneously.

  Here, the light receiving element 84 preferably has a light receiving area larger than the actual light receiving area for receiving the signal light emitted from the light output module 10. By using the large-diameter light receiving element 84, the burden of alignment can be reduced.

  FIG. 4 is a diagram showing an example using a photodiode (PD) that is a light receiving element 84 having a light receiving area (D) having a diameter of 2 mm. In the CAN package type light output module 10 intended to receive light with a single mode fiber, the light emitting spot diameter (S) of the laser diode (LD) as the light emitting element 14 is 10 μm, and the focal length (f) is 500 μm. The beam angle (A) = 10 degrees, L = 3 mm, and the actual light receiving area (Da) = 525 μm. When the light receiving area (D) of the photodiode (PD) is 2 mm, the range (K) in which the optical axis is allowed to vary due to the set position variation of the optical output module 10 and the positioning accuracy of the photodiode (PD) is It is up to about 0.7 mm.

  In addition, in the case of entering the multimode fiber, if the beam angle (A) is changed from 20 degrees to 28 degrees, L = 2 mm and the actual light receiving area (Da) = 1000 μm or less. Therefore, even in this case, a margin of 0.5 mm is obtained in the range (K) in which the optical axis is allowed to vary.

  Returning to FIG. 2 again, the conveying belt 66 is arranged in the apparatus base 22 in a substantially parallel direction with respect to the pair of guide rails 60, 62, and the row direction of the plurality of sockets 34 in which the sliders 64 are arranged in a lattice shape. It has a function as a transport body for transporting in the (X direction). The conveyor belt 66 is provided in the vicinity of at least one of the guide rails 60 and 62 and is attached to the first slide portion 70 or the second slide portion 72.

  The conveyor belt 66 is supported by a pulley or the like (not shown). The pulleys and the like are arranged on the apparatus base 22 and are connected to a rotation shaft of a conveyor belt motor 68 for driving the conveyor belt 66. The conveyor belt motor 68 has a function as a conveyor driving unit that drives the conveyor belt 66. The conveyor belt 66 can be driven by rotating a pulley or the like with the rotational driving force of the conveyor belt motor 68. A general rotation motor is used as the conveyance belt motor 68. The transport body is not limited to the transport belt 66 and may be configured by a ball screw or the like.

  The control unit 90 has a function of controlling the light output module 10, the light receiving element 84, the heating element 44, the temperature sensor 46, and the transport belt motor 68. The control unit 90 is configured by, for example, a general personal computer. FIG. 5 is a block diagram of the burn-in test apparatus 20.

  The control unit 90 controls the light output module 10 by the light output module control circuit provided on the light output module substrate 32, and controls the light receiving element 84 by the light receiving element control circuit provided on the light receiving element substrate 82. It is possible to control on / off of signal light emitted from the light source 10 and reception of signal light emitted from the light output module 10.

  The control unit 90 controls the heating element 44 and the temperature sensor 46 to control the temperature of the space region 45 surrounded by the heating base 36 and the heating cover 38, and outputs a plurality of light outputs attached to the socket 34. The temperature of the module 10 can be made more uniform. Even when the light output module 10 self-heats, the control unit 90 can control the heating element 44 and the temperature sensor 46 to make the temperature of the light output module 10 more uniform. For the control of the heating element 44 and the temperature sensor 46, it is preferable to use PID control that combines proportional control, integral control, and differential control. Of course, the temperature control is not limited to PID control, and other control methods may be used.

  The control unit 90 controls the conveyor belt motor 68 by the conveyor belt motor drive circuit to drive the conveyor belt 66, thereby sliding the slider 64 with the photoreceptor 79 attached along the pair of guide rails 60 and 62. be able to.

  The controller 90 can operate the heating element 44 according to the temperature pattern stored in the storage unit 92. The control unit 90 can operate the light output module 10 and the light receiving element 84 based on the light emission pattern of the light output module 10 stored in the storage unit 92. The control unit 90 can operate the conveyor belt motor 68 according to the operation procedure stored in the storage unit 92. The control unit can determine the quality of the light output module 10 based on the determination criteria stored in the storage unit 92. The A storage unit 92 is configured by, for example, a hard disk, RAM, ROM, or the like.

  The control unit 90 can position the slider 64 to which the light receiving body 79 is attached by controlling the conveyance belt motor 68 by inputting the positional information of the light output module 10 in the input unit 94. The input unit 94 is configured with, for example, an operation panel and a keyboard.

  The control unit 90 can output the progress status of the burn-in test of the light output module 10 by the output unit 96. The output unit 96 is configured with, for example, a display.

  Next, the operation of the burn-in test apparatus 20 will be described.

  First, the plurality of light output modules 10 to be burned in are inserted into the light output module insertion grooves 42 of the light output module heating unit 24 and mounted in the plurality of sockets 34. 2, 10 sockets are formed at predetermined intervals in the row direction (X direction), and 10 sockets are formed at predetermined intervals in the column direction (Y direction). Therefore, a total of 100 light output modules 10 are set in the light output module heating units 24 and 25, respectively.

  Next, the control unit 90 controls the heating element 44 and the temperature sensor 46, and the light output module 10 set in the light output module heating units 24 and 25 by a predetermined heating pattern stored in the storage unit 92. Heat until the temperature reaches the test temperature. For example, the control unit 90 controls the heating element 44 by PID control or the like so that the temperature of the plurality of light output modules 10 set in the light output module heating units 24 and 25 becomes a more uniform test temperature. To do.

  The control unit 90 controls the conveyor belt motor 68 to slide the slider 64 in the direction in which the light output module heating units 24 and 25 are placed. Then, the control unit 90 controls the transport belt motor 68 and, based on the position information and the like of the light output module 10 stored in the storage unit 92, ten light receiving elements arranged on the light receiving body 79 of the slider 64. The position of the slider 64 is adjusted so that 84 is positioned above the ten light output modules 10 arranged in the row direction (Y direction) of the first row in the vertical direction. The driving of the conveyor belt motor 68 by the controller 90 is preferably performed after the temperature of the light output module 10 reaches the test temperature. This is to suppress thermal exposure of the light receiving element 84.

  FIG. 6 is a cross-sectional view showing a state where the light receiving element 84 is positioned above the light output module 10 in the vertical direction. The control unit 90 controls the light output module 10 with the light output module circuit to emit signal light from the ten light output modules 10 arranged in the column direction (Y direction). The emitted signal light passes through the opening 50 of the heating cover 38, passes through the glass plate 52, and is placed in positions corresponding to the light output modules 10 of the ten light output modules 10. Light is received by the light receiving element 84. The control unit 90 controls the light receiving element 84 by the light receiving element circuit, and stores the data of the signal light received by the light receiving element 84 in the storage unit 92.

  Next, the control unit 90 controls the conveyor belt motor 68 and, based on the position information of the light output module 10 set in the light output module heating unit 24, 10 pieces arranged on the photoreceptor 79 of the slider 64. The slider 64 is slid so that the light receiving elements 84 are positioned above the ten light output modules 10 arranged in the second row adjacent to the first row in the vertical direction. Then, the control unit 90 controls the light output module 10 by the light output module circuit to emit signal light, and the control unit 90 controls the light receiving element 84 by the light receiving element circuit and receives the signal received by the light receiving element 84. The light data is stored in the storage unit 92. By repeating the above-described operation up to the tenth column, the test of 100 light output modules 10 set in the light output module heating unit 24 is completed. Similarly, the test of the light output module 10 set in the light output module heating unit 25 is continuously performed.

  In the above configuration, the light receiver 79 is fixed to the slide base 74 of the slider 64. However, the light receiver 79 may be configured to be slidable on the slide base 74. The light receiver 79 is configured to be slidable on the slide base 74 using the transport belt 66 and the transport belt motor 68 as described above, so that the light receiver 79 is mounted on the light output module heating unit. The output module can be slid in the column direction (Y direction). Accordingly, by arranging at least one light receiving element 84 on the light receiving body 79, the signal light emitted from the light output module 10 mounted on the socket 34 in the column direction (Y direction) is received by one light receiving element 84. can do.

  According to the above configuration, the slider in which the plurality of light receiving elements are arranged is sequentially slid in the row direction of the sockets arranged in a lattice shape provided in the light output module heating unit in which the plurality of light output modules are set, By receiving the signal light emitted from the light output module with the light receiving element and performing the burn-in test, it is possible to perform the burn-in test with a smaller number of light receiving elements than the number of light output modules to be burned in. Thereby, the number of light receiving elements mounted on the burn-in test apparatus can be reduced, so that the manufacturing cost of the burn-in test apparatus is suppressed.

  According to the above configuration, since a plurality of optical output modules to be tested are heated by the optical output module heating unit having the heating base and the heating cover, it is not necessary to use a thermostatic chamber for heating the optical output module. The manufacturing cost of the test apparatus is suppressed.

  According to the above configuration, since the heating cover has the glass plate covering the opening, heat release from the space region surrounded by the heating base and the heating cover is suppressed, and the temperature of the light output module is made more uniform. Can be. Moreover, the heat exposure of a light receiving element can be suppressed by the glass plate which covers the opening provided in a heating cover.

  According to the above configuration, since the washer member is provided between the light output module mounted on the ket and the heating cover, the light output module can be mounted more stably.

  According to the above configuration, since the light receiving element has a light receiving area larger than the actual light receiving area that receives the signal light emitted from the light output module, the light output module and the light receiving element can be more easily aligned. be able to.

In embodiment of this invention, it is sectional drawing which shows schematic structure of a light output module. In an embodiment of the invention, it is a figure showing composition of a burn-in test device. In embodiment of this invention, it is sectional drawing of the A direction in the optical output module heating part 24 shown to Fig.2 (a). In embodiment of this invention, it is a figure which shows the example using the photodiode (PD) which is the light receiving element 84 which has a light reception area (D) with a diameter of 2 mm. 1 is a block diagram of a burn-in test apparatus in an embodiment of the present invention. In embodiment of this invention, it is sectional drawing which shows the state in which the light receiving element was located above the perpendicular direction of the light output module.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Light output module 12 Stem 14 Light emitting element 16 CAN cap 18 Lead pin 19 Lens 20 Burn-in test apparatus 22 Device base 23 Cable bear 24 Light output module heating part 26 Light receiving means 32 Light output module board 34 Socket 36 Heating base 38 Heating cover 40 Socket insertion groove 42 Optical output module insertion groove 44 Heating element 45 Spatial region 46 Temperature sensor 48 Heat insulator 50 Opening 52 Glass plate 54 Washer member 60, 62 Guide rail 64 Slider 66 Conveying belt 68 Conveying belt motor 70 First slide part 72 First Two slide parts 74 Slide base 76 Plate 78 Guide member 79 Photoreceptor 80 Light receiving base 82 Light receiving element substrate 84 Light receiving element 90 Control part 92 Storage part 94 Input part 96 Output part

Claims (4)

A burn-in test apparatus for performing a burn-in test of an optical output module equipped with a light emitting element,
A device base;
A light output module heating unit disposed on the apparatus base, wherein a plurality of light output modules are mounted, and heats the light output module;
A light receiving means disposed on the device base for receiving signal light emitted from the light output module;
With
The light output module heating unit is
An optical output module substrate for supplying power to the optical output module;
A plurality of sockets arranged in a grid pattern on the light output module substrate, to which the light output module is mounted;
A plurality of socket insertion grooves into which the sockets are inserted, and a plurality of light output module insertion grooves that are in communication with the socket insertion grooves and into which the light output module is inserted, are provided in a lattice shape, and the light output module A heating substrate having a heating element for heating;
A heating cover having a plurality of openings through which signal light emitted from the light output module passes, and covering the heating base;
Including
The light receiving means is
A pair of guide rails provided in the apparatus base across the light output module heating unit, and provided in a direction substantially parallel to the row direction of the sockets arranged in a grid pattern,
One end and the other end are slidably attached to the pair of guide rails, a slide base provided in a direction substantially parallel to the row direction of the sockets arranged in a grid, and provided on the slide base, A plurality of light receiving the signal light emitted from the light output module, arranged in substantially the same straight line as the sockets arranged in a direction, arranged in a line in a direction substantially parallel to the sockets arranged in a row direction A photoreceptor including a light receiving element, and a slider,
A transport body provided in the apparatus base in a direction substantially parallel to the pair of guide rails, and transporting the slider;
A carrier driving unit disposed on the apparatus base and driving the carrier;
A burn-in test apparatus comprising: The burn-in test apparatus according to claim 1,
The burn-in test apparatus, wherein the heating cover has a glass plate covering the opening. The burn-in test apparatus according to claim 1 or 2,
A burn-in test apparatus, wherein a washer member is provided between the light output module mounted on the socket and the heating cover. The burn-in test apparatus according to any one of claims 1 to 3,
The burn-in test apparatus, wherein the light receiving element has a light receiving area larger than an actual light receiving area where the signal light emitted from the light output module is received.

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