KR102646891B1 - Lens Unit Inspection Apparatus - Google Patents

Abstract

The present invention relates to a lens unit inspection device that can quickly and accurately perform various types of optical inspection sequentially through a single inspection device between successive lens unit manufacturing processes.

Description

Lens Unit Inspection Apparatus}

The present invention relates to a lens unit inspection device. More specifically, the present invention relates to a lens unit inspection device that can quickly and accurately perform several types of optical inspection sequentially through a single inspection device between successive lens unit manufacturing processes.

The lens unit that constitutes the camera module must undergo various optical inspections first. This is to determine whether the lens unit is defective before being assembled into a camera module, and to prevent the waste of discarding the entire camera module due to a defect in the lens unit after assembling the camera module.

Recently, almost all portable terminals include a still image or video capture function, and as mobile terminals become smaller or thinner, the size of the camera module is also becoming smaller and more microscopic, so the inspector has to handle it manually or visually inspect it with the inspector. It is not easy to accurately and quickly detect defects in the lens unit through inspection.

Inspection items for manufactured lens units generally include the type of lens unit, physical defects such as plane or side surfaces, the state of optical coating, the presence or absence of foreign substances or contaminants, or the orientation or distortion of the lens unit for subsequent processes. In order to inspect such a lens unit, performing the steps of sequentially picking up, transferring, mounting, inspecting, and picking up and transferring the lens unit to multiple inspection devices is a factor that reduces the efficiency of the inspection process. Additional alignment work is required for inspection in the inspection device.

In addition, since the inspection of miniaturized lens units forms part of the camera module manufacturing process, the inspection of the lens units is performed quickly and accurately without delaying the camera module manufacturing process, and then each lens unit is inspected as a follow-up process. Since it must be configured to deliver a number of lens units, a lens unit inspection device that is more efficient and minimizes equipment is required than a method of sequentially performing an optical inspection of the lens unit in a plurality of inspection devices.

The present invention aims to solve the problem of providing a lens unit inspection device that can quickly and accurately perform various types of optical inspection sequentially through a single inspection device between successive lens unit manufacturing processes.

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In order to solve the above problem, the present invention includes a loading picker unit equipped with a pickup unit for picking up a lens unit to be inspected and capable of being transferred in the X-axis direction; A rotatable inspection table provided with a plurality of rotatable arms radially, each having a holder at an outer end on which the front of the lens unit picked up by the loading picker unit faces upward, is mounted; a color inspection unit provided on the rotational transfer trajectory of the mounting unit to inspect the surface treatment condition of the front surface of the lens unit rotated by rotation of the rotating inspection table; a defect inspection unit provided on the rotational transfer trajectory of the mounting unit and configured to determine whether a foreign substance exists inside or outside the lens unit inspected by the color inspection unit; a front inspection unit provided on the rotational transfer trajectory of the mounting unit and used to inspect the appearance of the lens unit; and an unloading picker unit that is mounted on the holder and has a pickup unit for picking up lens units that have been inspected in the color inspection unit, the defect inspection unit, and the front inspection unit, and is capable of being transferred in the X-axis direction, wherein the rotary arm Rotates to the lens unit supply position, color inspection unit location, defect inspection unit location, front inspection unit location, and the lens unit pickup position where the lens unit is picked up by the unloading picker unit, where the lens unit picked up in the loading picker unit is mounted and supplied. A lens unit inspection device characterized in that it is transported can be provided.
Additionally, the mounting portion may be provided to be detachable from the rotary arm depending on the shape or standard of the lens unit.
Here, a lens unit rear inspection unit upwardly inspects the rear of the lens unit for which inspection has been completed and picked up by the unloading picker unit; And it may further include a lens unit side inspection unit for performing a side inspection of the lens unit back inspected by the lens unit rear inspection unit.
Here, the lens unit supply position, the lens unit pickup position, the lens unit rear inspection unit, and the lens unit side inspection unit are located on the same line in the X-axis direction, and the loading picker unit or the unloading picker unit transfers the pickup unit. It can be placed on a path.
Additionally, the lens unit side inspection unit may perform a side inspection multiple times while rotating the lens unit picked up by the unloading picker unit.

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Additionally, the present invention may further include a lens unit flipping unit for vertically inverting the lens unit to be inspected when it is necessary to flip the lens unit to be inspected picked up by the loading picker unit.

The present invention can provide a lens unit inspection device that can quickly and accurately perform several types of optical inspection sequentially through a single inspection device between successive lens unit manufacturing processes.

The lens unit inspection device according to the present invention minimizes the process of picking up, transporting, and placing lens units for vision inspection by type, and can quickly ship out lens units that have been inspected sequentially for subsequent processes.

In addition, in the lens unit inspection device according to the present invention, the inspection position of the vision unit constituting each inspection section is on the rotational transfer trace of the holder of the rotary arm or the X-axis direction transfer trace of the pickup unit of the unloading picker unit, so the lens unit The efficiency of the inspection process can be improved by minimizing or simplifying the movement route for transport.

Figure 1 shows a plan view of a lens unit inspection device according to the present invention.
Figure 2 shows a side view of the color inspection unit constituting the lens unit inspection device according to the present invention.
Figure 3 shows a side view of the defect inspection unit constituting the lens unit inspection device according to the present invention.
Figure 4 shows a side view of the front inspection part of the lens unit, which constitutes the lens unit inspection device according to the present invention.
Figure 5 shows a side view of the rear inspection portion of the lens unit, which constitutes the lens unit inspection device according to the present invention.
Figure 6 and Figure 4 show a side view of the lens unit side inspection part constituting the lens unit inspection device according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure will be thorough and complete, and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification.

Figure 1 shows a top view of the lens unit inspection device 1 according to the present invention.

Since the inspection of the lens unit forms part of the camera module manufacturing process, the inspection of the lens unit involves inspecting each lens unit quickly and accurately without delaying the camera module manufacturing process, and then inspecting each lens unit as a follow-up process. Since it must be configured to transmit the optical inspection of the lens unit sequentially using multiple inspection devices, it is more efficient and requires minimal equipment.

The present invention relates to a lens unit inspection device (1) that can quickly and accurately perform various types of optical inspection sequentially through a single inspection device between successive lens unit manufacturing processes.

In the present invention, in order to quickly and accurately perform various types of optical inspection sequentially through a single inspection device, the lens unit to be inspected is mounted on the rotating inspection table 300, and then the rotating inspection table 300 is rotated to perform various optical inspections. You can.

Specifically, the lens unit inspection device 1 according to the present invention includes a loading picker unit 200 that has a pickup unit for picking up a lens unit to be inspected and is capable of transport in the X-axis direction; A rotating inspection table 300, which is provided radially with a plurality of rotary arms 310 each having a mounting portion 311 on which the lens unit picked up by the loading picker 200 is mounted at the outer end, and which is rotatable, the rotating inspection table 300 In order to inspect the lens unit rotated by the rotation of the inspection table 300, a plurality of devices are provided on the rotation trajectory of the mounting portion 311 of the rotary arm 310 of the rotation inspection table 300, each of which is equipped with a vision unit. It may be configured to include an unloading picker unit 900 including two vision inspection units and a pickup unit capable of picking up lens units sequentially inspected by the plurality of vision inspection units and transporting them in the X-axis direction. At this time, the mounting portion may be provided to be detachable depending on the shape or standard of the lens unit.

When supplied to the lens unit inspection device (1) according to the present invention, if the vertical direction of the lens unit is not sorted or aligned and supplied to the lens unit inspection device (1), the vertical direction of the lens unit to be inspected differs from the inspection conditions. You can. Therefore, if the lens unit to be inspected picked up by the loading picker unit 200 needs to be flipped upside down before being inspected by the lens unit inspection device 1, the lens unit flipping unit 100 is used to flip the lens unit to be inspected up and down. ) may include.

The flipping unit 100 is provided with a flipper 110 for flipping and inverting the supplied lens unit up and down after the previous process of the lens unit inspection process is completed, and selectively selects the lens unit to suit the inspection conditions as needed. It can perform the role of turning it upside down.

The lens unit to be inspected mounted on the flipping unit 100 is picked up by the loading picker unit 200.

The flipping unit 100 is an alignment means for improving the accuracy of the pickup process of the lens unit, and includes an alignment jig 130 and an alignment table 120 for determining the distortion of the pickup unit by mounting the alignment jig 130 on the top. etc. can be provided.

The loading picker unit 200 includes a pickup unit 230 for picking up a lens unit and a vision unit 210 for determining the position error or distortion of the lens unit picked up by the pickup unit 230, A vision inspection may be performed by the vision unit 210 before being picked up by the pickup unit of the loading picker unit 200. The loading picker unit 200 is mounted on the X-axis transfer unit 1000 and can be transferred in the X-axis direction. Additionally, the pickup unit mounted on the loading picker unit 200 may be configured to be capable of lifting and lowering along the Z axis, rotating in the θ direction, and further changing its position in the Y axis.

Therefore, the vision unit of the loading picker unit 200 first captures an image of the lens unit mounted on the flipping unit 100, and then the pickup unit picks it up and transports it in the X-axis direction for inspection of the lens unit.

The lens unit inspection device 1 according to the present invention uses a rotating inspection table 300 to quickly and accurately perform various optical inspections continuously.

The rotation inspection table 300 is provided with a plurality of rotation arms 310 radially provided at the outer ends, each having a mounting portion 311 on which the lens unit picked up by the loading picker unit 200 is mounted, and is rotatable. It is provided.

That is, the loading picker unit 200 places the lens unit to be inspected on the mounting portion 311 provided at each end of the plurality of rotary arms 310 radially provided on the rotating inspection table 300 that can be rotated in a predetermined direction. are placed sequentially.

The inspection target lens unit mounted on the mounting portion 311 at the end of the rotary arm 310 is rotated and transferred to each of the plurality of vision inspection units according to the rotation of the rotary inspection table 300, and vision inspection by type is performed in each vision inspection unit. It can be done.

The mounting portion 311 at the end of the rotary arm 310 determines the presence or absence of defects by taking images from the top of the mounted inspection target lens unit downward or upward from the bottom, so the mounting portion allows light to pass through in the vertical direction of the lens unit. It may be composed of a structure that supports the lens unit. For example, the mounting portion 311 may be configured to support the side of the lens unit.

The rotating inspection table 300 of the embodiment shown in FIG. 1 is shown as having five rotating arms 310, but the number of rotating arms 310 can be increased or decreased depending on the type of vision inspection.

The loading picker unit 200 supplies lens units to be inspected to the rotating inspection table 300, and the unloading picker section 900 picks up the lens units inspected on the rotating inspection table 300, and each loading pick The picker unit 200 and the unloading picker unit can be transported in the X-axis direction.

Like the lens unit flipping unit 100, the rotating inspection table 300 also includes an alignment jig 330 and an alignment jig as alignment means to improve the accuracy of the lens unit supply process of the loading picker unit or the lens unit pickup process of the unloading picker unit. By mounting 330, an alignment table 320, etc. can be provided to determine whether the pickup unit is distorted.

Therefore, when the rotary test table has at least five rotary arms 310, as the rotary test table 300 rotates, each rotary arm 310 moves the lens unit picked up by the loading picker unit 200. The lens unit will be sequentially rotated and transferred to the supply position (300S) where the lens unit is mounted and supplied, the inspection position of at least three vision inspection units, and the lens unit pickup position (300P) where the lens unit is picked up by the unloading picker unit (900). You can.

Ultimately, the number of rotating arms 310 can be increased or decreased depending on the number of inspection types of the vision inspection unit.

In addition, since each of the loading picker unit 200 and the unloading picker unit 900 can be transported in the X-axis direction, as shown in FIG. 1, the lens unit supply position 300S and the lens unit pickup position ( 300P) may be a position on the X-axis direction transfer trajectory of the pickup unit of the loading picker unit 200 and the unloading picker unit 900.

In the embodiment shown in FIG. 1, inspection may be performed in three vision inspection units according to the rotation of the rotating inspection table 300.

With the front of the lens unit (the surface facing the subject) facing upward, you can inspect the lens unit for defects by taking a downward image from the top of the lens unit or an upward image from the bottom of the lens unit. Whether various surface coatings were performed normally, whether foreign substances, etc. exist on the surface or inside the lens unit, and whether there is a defect in the shape of the lens unit in the plane direction.

Accordingly, the vision inspection unit may include a color inspection unit 400 that performs a color image inspection downward to inspect the surface treatment or surface coating state of the upper surface of the lens unit.

The lens unit may be subjected to various surface treatments or surface coatings to block or reflect light of unnecessary wavelengths other than visible light. Such surface treatment or surface coating can be performed by providing illumination to the front of the lens unit and checking colored reflected light.

Therefore, the vision unit of the color inspection unit 400 may be a color vision unit capable of capturing color images.

Additionally, the vision inspection unit may include a defect inspection unit 500 that performs a black-and-white image inspection upward to determine whether foreign matter exists inside or outside the lens unit.

Examples of such defects may be whether contaminants such as dust, for example, are present on the surface of the lens unit, or whether air bubbles, etc. are present inside the lens layer of the lens unit, and such defect inspection unit The vision unit at 500 may be a black and white vision unit.

Such lens unit defects correspond to defects that can be detected by capturing an upward image by the vision unit of the defect inspection unit 500.

Additionally, the vision inspection unit may include a lens unit front inspection unit 600 that performs a downward image inspection to inspect external defects of the lens unit.

With the front of the lens unit (the side facing the subject) positioned so that it faces upward, a downward inspection is performed by the vision unit of the front inspection unit 600 of the lens unit to determine whether the overall shape or shape of the lens is normal. can be performed.

The lens unit front inspection unit 600 is a process of inspecting defects such as the shape or shape of the upper or upper surface of the lens unit through downward imaging with the front of the lens unit facing upward, so that the rear of the lens unit is inspected. Defects such as shape or shape, or defects such as the shape or shape of the side of the lens unit must also be inspected.

Therefore, the lens unit is picked up by the unloading picker unit 900 in the mounting portion 311 of the rotary arm 310 on which the lens unit inspected in the lens unit front inspection portion 600, which is the last inspection portion of the rotation inspection portion, is mounted. After being transported to the lens unit pickup position (300P), it is picked up by the unloading picker unit.

The structure of the unloading picker unit 900 may be a structure corresponding to the loading picker unit 200.

The lens unit picked up by the pickup unit of the unloading picker unit 900 can be inspected for defects such as the shape or shape of the rear surface or the shape or shape of the side of the lens unit in the picked state.

Therefore, the lens unit according to the present invention includes an upward vision unit for picking up the lens unit that has been inspected in the vision inspection unit by the unloading picker unit 900 and inspecting the rear of the lens unit upward. The lens unit may further include a rear inspection unit 700.

In a state where the front of the lens unit is adsorbed and picked up by the pickup unit of the unloading picker unit, the rear of the lens unit is facing downward and the image is captured by the upper vision unit provided at the bottom, and the shape or shape of the rear of the lens unit is captured. You can inspect for defects, etc.

In addition to checking for defects in the front and back of the lens unit, the lens unit side inspection unit (800) includes a side vision unit to perform a side direction inspection for the side inspection of the lens unit picked up by the unloading picker unit (900). ) may further be included.

In the embodiment shown in FIG. 1, the side inspection of the lens unit for which the rear inspection of the lens unit has been completed in the lens unit rear inspection unit 700 may be performed in the lens unit side inspection unit 800.

The upper vision unit for inspecting the back of the lens unit has a low possibility of interference with the pickup unit of the unloading picker unit 900, etc., but the side vision unit for inspecting the side of the lens unit is configured to have a horizontal imaging direction, so it can be used on the rotating inspection table (300) ) or because there is a possibility of interference with the unloading picker unit 900, the lens unit side inspection unit 800 may be placed in a position spaced apart from the lens unit pickup position 300P by the unloading picker unit 900.

In addition, the vision unit and driving unit that constitute the lens unit side inspection unit 800 interfere with the X-axis transfer unit 1000 for transferring the loading picker unit 200 or the unloading picker unit 900 in the There is a possibility that the side vision unit may be arranged so that the imaging direction faces the X-axis transfer unit 1000, as shown in FIG. 1 .

And, as shown in FIG. 1, the upper vision unit of the lens unit rear inspection unit 700 and the side vision unit of the lens unit side inspection unit 800 are configured such that the pickup unit of the unloading picker unit 900 is the lens unit. In the process of being transported in the It may be provided. In addition, it is preferable that the lens side inspection unit performs the inspection several times while rotating the unloading picker unit multiple times while picking up the lens unit.

In addition, according to the present invention, the lens unit supply position, the lens unit pickup position, the lens unit rear inspection unit, and the lens unit side inspection unit are located on the same line in the X-axis direction, and the loading picker unit or the unloading picker It can be placed in the transfer path of the secondary pickup unit.

Below, we review the inspection department that performs each inspection.

Figure 2 shows a side view of the color inspection unit 400 constituting the lens unit inspection device 1 according to the present invention.

The rotating arm 310 of the rotating sword table constituting the lens unit inspection device 1 according to the present invention shown in FIG. 1 receives the lens unit lu from the lens unit supply position 300S and operates the rotating inspection table 300. By rotating, the lens unit is transferred to the inspection positions of the plurality of vision inspection units, and various optical inspections can be performed.

Among various optical inspections, the first optical inspection performed may be a color inspection that inspects the condition of the front surface treatment.

The lens unit (lu) may be subjected to various coatings for optimal imaging conditions. For example, water repellent coating, anti-reflective coating, UV blocking coating, etc.

Such various coatings can be performed on the front of the lens unit, and the quality of such coating can be confirmed through the unique surface color of the lens unit reflected by irradiating light to the front of the lens unit.

Such defects in surface treatment, such as surface coating, can be determined by taking an image of the front surface of the lens unit.

The color inspection unit 400 shown in FIG. 2 may include a color vision unit 410 and a ring-shaped lighting unit 460.

The color vision unit 410 and the lighting unit 460 are mounted on a stand 450, and the color vision unit 410 is a guide 430 provided on the stand 450 via a guide block 420. It is mounted on and can be displaced within a predetermined range by the driving force provided by the motor and ball screw.

The color vision unit 410 is mounted on the stand 450 to enable downward imaging, and the end of the rotating arm 310 of the rotating inspection table 300 is rotated to pass through the lower part of the ring-shaped lighting unit. The lens unit mounted on the upper part of the mounting portion 311 provided at the end of the rotary arm 310 receives the illumination provided by the ring-shaped lighting unit 460 and performs downward imaging by the color vision unit 410. You can.

Through analysis of the color image captured by the color vision unit 410, it is possible to determine the front surface treatment of the lens unit, for example, uniformity of surface coating, presence of uncoated area, etc.

Figure 3 shows a side view of the defect inspection unit 500 constituting the lens unit inspection device 1 according to the present invention.

The lens unit for which the color inspection has been completed in the color inspection unit 400 may be rotated and transferred to the defect inspection unit 500 while mounted on the mounting portion 311 of the rotary arm 310 to perform a defect inspection.

As mentioned above, the defect inspection determines whether contaminants such as foreign matter, such as dust, are present on the surface of the lens unit (lu) or whether there are defects such as whether bubbles are present inside the lens layer of the lens unit. This is a method of inspecting the lens unit by placing the front of the lens unit upward and irradiating light downward from the top of the lens unit while simultaneously performing an upward inspection using a vision unit placed at the bottom of the lens unit. The inspection can be performed.

Therefore, if there is a foreign substance in the lens unit while the light is irradiated downward from the lighting unit, the image captured by the vision unit may include a shadow. Therefore, the difference in brightness of each area of the captured image or the presence of a shadow may be detected. You can inspect the defects of the lens unit, etc.

Since this defect test is a test to determine the uniformity of brightness of light passing through the lens unit or whether there is a spot-shaped shadow, etc., the image captured by the vision unit 510 may be a black and white image, and the vision unit 510 It may also be a black and white vision unit 510.

As shown in FIG. 3, the defect inspection unit 500 may be provided with a lighting unit above the rotational transfer trajectory of the rotary arm 310 and a vision unit 510 below it.

The lighting unit 560 and the vision unit 510 are mounted on a stand 550, and the lighting unit 560 and the vision unit 510 are each manually operated in a vertical direction for vertical focus or alignment adjustment. Adjusting devices 521, 526:520 may be provided, and the stand may also be provided with a horizontal manual adjusting device 531, 536:530 for adjusting the horizontal alignment if the stand is tilted.

Contaminants on the surface of the lens unit or inside it can be judged by the uniformity of the brightness of the transmitted light or the presence or absence of a spot-shaped shadow, rather than by color, so accurate focus or pin is prerequisite when imaging the lens unit of the vision unit.

Therefore, when setting the lighting unit 560 or the vision unit 510, the defect inspection unit 500 finely adjusts the vertical manual control device and the horizontal manual control device to set the lighting unit 560 and the vision unit 510. Alternatively, the position of the stand 550 can be adjusted to perform an alignment task for capturing the best inspection image.

Figure 4 shows a side view of the lens unit front inspection part 600 constituting the lens unit inspection device 1 according to the present invention, and Figure 5 shows the lens unit constituting the lens unit inspection device 1 according to the present invention. Figure 6 shows a side view of the rear inspection unit 700, and Figure 4 shows a side view of the lens unit side inspection unit 800, which constitutes the lens unit inspection device 1 according to the present invention.

The lens unit inspection device 1 according to the present invention shown in FIG. 1 inspects the surface treatment of the lens unit or the presence of foreign substances through the color inspection unit 400 and the defect inspection unit 500 shown in FIGS. 2 and 3. Afterwards, a vision inspection can be performed on the shape or shape of the front of the lens unit, the back of the lens unit, and the side of the lens unit.

As described above, the final inspection performed while the lens unit is mounted on the rotating inspection table 300 may be an inspection of the entire lens unit.

The structure of the lens unit front inspection unit 600 shown in FIG. 4 may correspond to the structure of the color inspection unit 400.

Accordingly, the lens unit front inspection unit 600 may include a vision unit 610 for downward imaging and a ring-shaped lighting unit 660. The vision unit 610 and the lighting unit 660 for the downward imaging are mounted on a stand 650, and the vision unit 610 can acquire the entire image by shooting the lens unit multiple times. . Therefore, it can have a structure that can be adjusted up and down by a motor or the like for alignment so that multiple positions of the lens unit can be photographed.

The vision unit 610 for downward imaging is mounted on the stand 650 to enable downward imaging, and the end of the rotating arm 310 of the rotating inspection table 300 is the ring-shaped lighting unit 660. The lens unit (lu), which can be rotated to pass through the lower part and is mounted on the top of the mounting portion 311 provided at the end of the rotary arm 310, receives light provided from a ring-shaped lighting unit and is illuminated by the vision unit 610. It can be imaged downward.

The image captured by the vision unit 610 for downward imaging, which constitutes the lens unit front inspection unit 600, can be analyzed to determine whether the imaged shape or shape of the front of the lens unit is normal. Through this inspection, it is possible to determine defects in shape or shape, such as damage or distortion of the front of the lens unit.

The lens unit, on which the front inspection of the lens unit has been completed in the lens unit front inspection unit 600, is rotated and transferred to the lens unit pickup position 300P shown in FIG. 1 while mounted on the rotary arm 310, and then unloaded pick. After being picked up by the pickup unit of the pickup unit 900, it is transferred to the lens unit rear inspection unit 700 to inspect the bottom of the lens unit for defects.

The lens unit rear inspection unit 700 shown in FIG. 5 can inspect the presence of defects in the lens unit by taking an upward image of the lower surface of the lens unit picked up by the pickup unit of the unloading picker unit 900.

As shown in FIG. 5, the unloading picker unit 900 is mounted on the X-axis transfer unit 1000 via the Since it is in a picked up state, a ring-shaped lighting unit 760 is provided at the bottom of the picked up lens unit to illuminate the rear of the lens unit, and the lighting unit 760 is illuminated by the vision unit 710 for upward imaging provided at the bottom. ), the rear of the lens unit illuminated can be captured upward.

By analyzing the image captured by the vision unit 710 for upward imaging, which constitutes the lens unit rear inspection unit 700, it can be determined whether the imaged shape or shape of the rear of the lens unit is normal. Through this inspection, it is possible to determine defects in shape or shape, such as damage or distortion on the rear of the lens unit.

As described with reference to FIG. 1, the lens unit picked up by the pickup unit of the unloading picker part 900 is in a state of being picked up by the pickup unit of the unloading picker part 900. After inspecting the rear surface of the lens unit for defects such as shape or shape in the The picked up lens unit may be transferred to the lens unit side inspection unit 800 to perform a side inspection of the lens unit.

As shown in FIG. 6, since the pickup unit 910 of the unloading picker unit 900 has picked up the front side of the lens unit lu, the ring-shaped lighting unit 860 is positioned toward the side of the picked up lens unit. ) is provided to illuminate the side of the lens unit, and the side of the lens unit (lu) illuminated by the lighting unit 860 can be imaged through the vision unit 810 for side imaging provided behind it. .

Likewise, the image captured by the vision unit for side imaging constituting the lens unit side inspection unit 800 can be analyzed to determine whether the imaged shape or shape of the side of the lens unit is normal. It is also possible to determine defects in shape or shape, such as damage or distortion of the side of the lens unit, through such inspection.

At this time, the side inspection unit 800 can inspect the side of the lens unit by taking one photo while the unloading picker unit picks up the lens unit and then rotating it 180° and taking another photo. However, it is not limited to this, and depending on the operator, the side of the lens unit can be inspected by rotating it at an angle of 60°, 90°, or 120°.

The lens unit (lu) for which the side inspection of the lens unit has been completed in the lens unit side inspection unit 800 shown in FIG. 6 continues to be transferred in a picked state to the pickup unit of the unloading picker unit 900 and is transferred to subsequent equipment for subsequent processing. It may be supplied or exported (not shown).

By this method, after the entire process is performed, the lens unit supplied to the lens unit inspection device 1 according to the present invention is flipped so that the front of the lens unit faces upward, and then is loaded by the loading picker unit 200. After being placed on the rotating inspection table 300, it is rotated and transferred, and after a color inspection to inspect defects in the surface treatment of the front of the lens unit and a defect inspection to determine the presence of foreign substances, etc., the front of the lens unit is inspected. After performing this, it is rotated and transferred to the pickup position (300P), and then picked up with the front of the lens unit picked up by the pickup unit of the unloading picker unit 900, and then picked up in the X-axis direction by the unloading picker unit 900. It is transported and inspection of the rear and side of the lens unit can be performed.

Accordingly, three types of vision inspection can be performed while the lens unit is mounted on the rotating arm 310, and two types of vision inspection can be performed by picking up the lens unit again, according to the present invention shown in FIG. The lens unit inspection device (1) minimizes the process of picking up, transporting, and mounting the lens unit for vision inspection by type, and for the subsequent process, the lens unit is sequentially inspected using follow-up equipment, such as the flipper of the follow-up equipment. can be exported quickly.

In addition, the lens unit inspection device 1 according to the present invention determines the inspection position of the vision unit constituting each inspection unit according to the rotation transfer trajectory of the mounting portion 311 of the rotary arm 310 or the unloading picker portion 900. Since it exists on the X-axis direction transport trace of the pickup unit, the efficiency of the inspection process can be improved by minimizing or simplifying the movement line for transport of the lens unit.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims described below. It will be possible to implement it. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, it should be considered to be included in the technical scope of the present invention.

1: Lens unit inspection device
100: Flipping part
200: Loading picker unit
300: Rotating inspection table
400: Color inspection unit
500: Defec Inspection Department
600: Front inspection part of lens unit
700: Lens unit rear inspection section
800: Lens unit side inspection part
900: Unloading picker unit
1000: Picker transfer unit

Claims (6)

A loading picker unit equipped with a pickup unit for picking up a lens unit to be inspected and capable of being transported in the X-axis direction;
A rotatable inspection table provided with a plurality of rotatable arms radially, each having a holder at an outer end on which the front of the lens unit picked up by the loading picker unit faces upward, is mounted;
a color inspection unit provided on the rotational transfer trajectory of the mounting unit to inspect the surface treatment condition of the front surface of the lens unit rotated by rotation of the rotating inspection table;
a defect inspection unit provided on the rotational transfer trajectory of the mounting unit and configured to determine whether a foreign substance exists inside or outside the lens unit inspected by the color inspection unit;
a front inspection unit provided on the rotational transfer trajectory of the mounting unit and used to inspect the appearance of the lens unit; and
An unloading picker unit mounted on the mounting unit and equipped with a pickup unit for picking up a lens unit that has been inspected in the color inspection unit, the defect inspection unit, and the front inspection unit, and capable of transporting the lens unit in the X-axis direction;
The rotating arm is configured to provide a lens unit supply location, a color inspection unit location, a defect inspection unit location, a front inspection unit location, and a lens unit pickup location where the lens unit is picked up by the unloading picker unit. It is rotated and transferred to the position,
The color computer unit is composed of a color vision unit, and inspects the front surface treatment condition through the surface color of the unique lens unit reflected by irradiating light to the front of the lens unit with the color vision unit,
The defect inspection unit is composed of a black-and-white vision unit, and inspects the defect of the lens unit through differences in brightness of each area or the presence of a shadow in the image captured by the black-and-white vision unit. According to paragraph 1,
A lens unit inspection device, characterized in that the mounting portion is provided to be detachable from the rotary arm according to the shape or standard of the lens unit. According to paragraph 1,
a lens unit rear inspection unit that upwardly inspects the rear of the lens unit that has been inspected picked up by the unloading picker unit; and
A lens unit inspection device further comprising a lens unit side inspection unit for performing a side inspection of the lens unit inspected from the rear by the lens unit rear inspection unit. According to paragraph 3,
The lens unit supply position, the lens unit pickup position, the lens unit rear inspection unit, and the lens unit side inspection unit are located on the same line in the A lens unit inspection device characterized in that it is arranged. According to paragraph 3,
A lens unit inspection device characterized in that the lens unit side inspection unit performs a side inspection multiple times while rotating the lens unit picked up by the unloading picker unit. According to paragraph 1,
A lens unit inspection device further comprising a lens unit flipping unit for vertically inverting the inspection target lens unit when the inspection target lens unit picked up by the loading picker unit needs to be flipped vertically.

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