JPH03163506A - Automatic assembling device for optical parts - Google Patents

Abstract

PURPOSE:To automatically position a light emitting element and a lens to a desired relative position relation and to improve quality by stopping the impression of the driving signals to respective fine adjustment tables when the light pattern detected by a detector is decided to be adequate. CONSTITUTION:This device has a electric power source 8 which supplies electric power to the light emitting element 2, the light emitting element side fine adjustment table 4, the lens side fine adjustment table 6, a joining means 7 for joining the light emitting element side and the lens 5, and a detector 9 which detects the light pattern obtd. via the lens 5 from the light emitting element 2. Decision is made as to whether the light pattern detected by the detector 9 is adequate or not in a driving control part 11. The impression of the driving signals to the respective fine adjustment tables 4, 6 is stopped and the driving signals are impressed to the joining means 7 when the light pattern is decided to be adequate. The position adjustment of the light emitting element 2 and the lens 5 is, therefore, completed and the joining of both is executed by the joining means 7 when the detected light pattern is decided to be adequate. Thus, the assembly and adjustment of the optical parts are automated and the mass production and quality improvement are attained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic optical component assembly apparatus, and more particularly to an optical component automatic assembly apparatus that positions and assembles a light emitting element and a lens at desired positions.

(Prior art) A light emitting element, such as a semiconductor laser or a light emitting diode,
In order to adjust and fix the relative positional relationship with the lens to a desired one, conventionally, as shown in FIG.
The light that has passed through a is detected by a detector 9a such as a TV camera. Then, the light emitting element side fine movement stage 4a finely moves the lens side fine movement stage 6a and the stem 3a that supports the light emitting element 2a while visually observing the light pattern (light shape: beam profile) as desired on the monitor 14a.
and manually slightly move each, thereby causing the light emitting element 2 to
The relative position between a and the lens 5a is being adjusted. After the adjustment is completed, the adhesive previously applied to the stem 3a is cured by ultraviolet irradiation, the lens 5a and the stem 3a are joined, and the assembly as an optical component is completed.

(Problems to be Solved by the Invention) As described above, the conventional assembly and adjustment of optical components requires human labor, resulting in high costs, and also involves individual differences in determining the suitability of the relative position of the light emitting element and the lens. There was a problem that the quality was not constant.

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to automate the assembly and adjustment of optical components, thereby achieving mass production and quality improvement.

(Means for Solving the Problems) In order to achieve such an object, the present invention provides the optical component automatic assembly apparatus described at the beginning, which includes a power source that supplies power to a light emitting element, and a fine movement table on the light emitting element side. , a lens-side fine movement table, a bonding means for bonding the light-emitting element side and the lens, a detector for detecting a light pattern obtained from the light-emitting element through the lens, and a light pattern detected by the detector. The configuration includes a drive control section that determines whether or not it is appropriate, and if it is appropriate, stops applying a drive signal to each fine movement table and applies the drive signal to the bonding means.

(Function) According to the present invention, when the light pattern detected by the detector is determined to be appropriate, the application of drive signals to each fine movement table is stopped, and the positioning adjustment between the light emitting element and the lens is performed. The bonding process is completed, and the bonding means joins the two together.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram of the optical component automatic assembly apparatus of the present invention, and FIG. 2 is a flowchart for explaining the operation of the apparatus.

In FIG. 1, the optical component automatic assembly device 1 includes a light-emitting element side fine movement table 4 that finely moves a stem 3 to which a light emitting element 2 is fixed, a lens side fine movement table 6 that finely moves a lens 5, and a stem 3 and a lens 5. an ultraviolet irradiation device 7 as a bonding means for bonding, a power source 8 for supplying power to the light emitting element 2, and a camera 9 as a detector for detecting a light pattern obtained from the light emitting element 2 via the lens 5. , C which processes the light pattern detected by this camera 9 and gives a drive signal to each component via the drive circuit IO.
It mainly consists of a drive control section 1l constituted by a PU. Each of the fine movement tables 4.6 has a built-in motor, and the stem 3 and lens 5 are slightly moved by the operation of the motor.

The drive control unit 11 includes an image processing unit l2 and a drive command unit 13, and a monitor l4 is attached to this drive command unit l3.

Next, the operation of the optical component automatic assembly apparatus 1 consisting of the above components will be explained.

First, a drive signal is given to the power source 8 to supply power to the light emitting element 2 (step St), and the lens 5 is temporarily installed at a desired position while emitting light from the light emitting element 2 (step S2).
). Then, the light that has passed through the lens 5 is detected by the camera 9 (Step S3: The detected light is
At step 2, its size and the position (center coordinates) of incidence on the camera are calculated in real time (step S4), and the information is sent to the drive command section 13. In the drive command unit l3,
The detected values are compared with preset target values, that is, the set values of the light intensity and the incident position (step S5), and if the detected values are appropriate, the drive signals to both fine movement tables 4.6 are The application is stopped and a drive signal is applied to the ultraviolet irradiation device 7 (step S6).

On the other hand, if the detected value is not appropriate, the application of the drive signal to both fine movement tables 4.6 is continued (step S8), and by moving to step 3, light detection by the camera 9 is performed again, and the same operation is performed. Repeated.

Then, in step 6, when the light emitting element 2 and the lens 5 are irradiated with ultraviolet rays at a desired relative position and bonded,
Power supply to the light emitting element 2 is stopped (step S7),
A desired optical component is obtained.

The joining of the stem 3 and the lens 5 in step 6 above is achieved by curing the liquid adhesive that has been applied to the stem 3 in advance by irradiating it with ultraviolet rays.

As described above, the light emitting element and the lens of the optical component are automatically positioned and assembled into a desired relative positional relationship by the drive control section. In this way, optical components can be assembled automatically without human intervention, thereby improving quality.

(Effects of the Invention) Therefore, according to the present invention, when the light pattern detected by the detector is determined to be appropriate, the application of drive signals to each fine movement table is stopped, and the positioning of the light emitting element and the lens is adjusted. After the alignment is completed, the two are joined by the joining means, and the light emitting element and lens of the optical component are automatically positioned and assembled in the desired relative positional relationship, improving the quality of the optical component. It becomes possible.

[Brief explanation of the drawing]

1 and 2 relate to an embodiment of the present invention, in which FIG. 1 is an overall configuration diagram of an automatic optical component assembly apparatus, and FIG. 2 is a flowchart for explaining the operation. FIG. 3 is a diagram corresponding to FIG. 1 of the conventional example. l... Optical component automatic assembly device, 2... Light emitting element, 4... Light emitting element side fine movement table, 5... Lens, 6... Lens side fine movement table, 7... Ultraviolet irradiation device (bonding means) ), 8...power supply, 9...camera (detector), 11...drive control unit.

Claims (1)

[Claims] (1) An automatic optical component assembly device that positions and assembles a light emitting element and a lens at a desired position, which comprises: a power supply that supplies power to the light emitting element; a light emitting element side fine movement table; a lens side fine movement table; and the light emitting element. a bonding means for bonding the side and the lens; a detector for detecting a light pattern obtained from the light emitting element through the lens; and a detector for determining whether or not the light pattern detected by the detector is appropriate. An automatic optical component assembly apparatus comprising: a drive control unit that stops applying a drive signal to each fine movement table and applies a drive signal to a bonding means when