KR20160127377A - Inspection apparatus for camera lens module - Google Patents

Inspection apparatus for camera lens module Download PDF

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Publication number
KR20160127377A
KR20160127377A KR1020150058688A KR20150058688A KR20160127377A KR 20160127377 A KR20160127377 A KR 20160127377A KR 1020150058688 A KR1020150058688 A KR 1020150058688A KR 20150058688 A KR20150058688 A KR 20150058688A KR 20160127377 A KR20160127377 A KR 20160127377A
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KR
South Korea
Prior art keywords
lens module
camera
camera lens
inspection stage
illumination
Prior art date
Application number
KR1020150058688A
Other languages
Korean (ko)
Inventor
강정근
유태경
김대봉
Original Assignee
주식회사 엠티엠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 엠티엠 filed Critical 주식회사 엠티엠
Priority to KR1020150058688A priority Critical patent/KR20160127377A/en
Publication of KR20160127377A publication Critical patent/KR20160127377A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
    • G01M11/0278—Detecting defects of the object to be tested, e.g. scratches or dust
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/0207—Details of measuring devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Studio Devices (AREA)

Abstract

The present invention relates to a device for testing a camera lens module including a zoom function and a plurality of lenses. The device for testing the camera lens module comprises: a frame; a test stage which positions the lens module; a lamp which lightens the lens module; a photographing camera which is fixed to the frame, and photographs the lens module positioned in the test stage; and an elevating device which is installed in the frame, and elevates the test stage. Each lens of the lens module having the lenses moves the test stage to be successively positioned in a focus position of the photographing camera; and obtains a defective reading image.

Description

≪ Desc / Clms Page number 1 > INSPECTION APPARATUS FOR CAMERA LENS MODULE &

And a camera lens module inspection apparatus. And more particularly, to an apparatus for inspecting a camera lens module having a zoom function and including a plurality of lenses.

A culture that shares personal daily life through social networks is developing, and camera modules are being installed in various portable devices as well as smart phones and smart pads.

A typical camera module includes a housing, a lens barrel in which a plurality of lenses are stacked, an image sensor of a CCD or a CMOS, and a connector that makes an electrical connection to the outside with a substrate on which the camera barrel is mounted.

Conventional miniature camera module is a single lens without optical zoom function, but small zoom lens module is gradually being developed in accordance with the demand of consumers who want to take pictures and videos of a wider angle of view.

However, the conventional camera lens module inspection apparatus has a problem in that it is not compatible with a zoom lens module composed of a plurality of lenses.

Korean Patent Publication No. 10-2015-0004157 Korean Patent Publication No. 10-2015-0015985 Korean Patent Publication No. 10-2015-0026508

An object of the present invention is to provide a camera lens module inspecting apparatus capable of inspecting individual defects of each lens of a module in a state of being assembled with a zoom lens module.

The present invention relates to a camera module, which is installed on a frame, a test stage on which a lens module can be placed, a light for illuminating the lens module, a camera for photographing a lens module located on an inspection stage and a frame, And moving the inspection stage such that each lens of the lens module including the plurality of lenses is sequentially positioned at the focus position of the photographing camera and acquiring the defective reading image, Thereby providing an inspection apparatus.

According to another aspect of the present invention, there is provided an apparatus for inspecting a camera lens module, wherein illuminations illuminating the lens module are provided on upper and lower portions of an inspection stage, respectively.

According to another aspect of the present invention, there is provided an apparatus for inspecting a camera lens module, wherein an inspection stage is installed on an upper portion of a lower illuminator.

According to another aspect of the present invention, there is provided an apparatus for inspecting a camera lens module, wherein the ascending / descending device elevates the lower illumination and the inspection stage together.

According to another aspect of the present invention, there is provided an apparatus for inspecting a camera lens module, characterized in that the defective reading image is sequentially acquired for each lens in a state in which the individual illumination is turned on.

The present invention is for inspection of a camera lens module composed of a plurality of lenses, and it is advantageous in that an individual image for each lens is acquired and the defect of each lens is inspected, whereby a more precise inspection is performed.

1 is a perspective view of a camera lens module inspection apparatus according to an embodiment of the present invention,
2 is an exploded view of a camera lens module inspection apparatus according to an embodiment of the present invention,
3 is a view showing a state in which a camera lens module according to an embodiment of the present invention lifts up a lens module to acquire an image,
4 is a view showing a state in which a camera lens module according to an embodiment of the present invention moves down a lens module to acquire an image,
5 is a flow chart illustrating a method of inspecting a lens module using a camera lens module according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a perspective view of a camera lens module inspection apparatus according to an embodiment of the present invention, and FIG. 2 is an exploded view of a camera lens module inspection apparatus according to an embodiment of the present invention.

The apparatus for inspecting a camera lens module according to an embodiment of the present invention includes a frame 100 so that each component of the apparatus can be fixedly or movably installed, 200 are installed. The inspection stage 300 is provided on a lower illuminator 500 to be described later and the lower illuminator 500 is mounted on the up / (Not shown). An upper illumination 600 is installed on an upper part of the inspection stage 300 at an interval from the inspection stage 300 and the upper illumination 600 acquires an image of the camera lens module L It is preferably formed in a ring shape so as not to be disturbed. Unlike the upper illuminator 600, the lower illuminator 500 preferably forms a light source at a central portion thereof, that is, it is formed on the same axis as the camera 200. The light source characteristics of the upper illuminator 600 and the lower illuminator 600 are different from each other, so that it is easy to detect foreign matter in the camera lens module L.

The lifting device 400 is fixed to the frame 100 and includes a driving part 410 having a motor for raising and lowering the lifting device 400 and a lower lighting device 500 as described above, (Not shown). The driving unit 410 moves the moving unit 420 so that the lower illumination 500 provided on the moving unit 420 and the inspection stage 300 provided on the lower illumination unit 500 and the inspection stage 300 And the camera lens module L located at the lower end of the camera lens module L is lifted and lowered together.

FIG. 3 is a view showing a state in which a camera lens module according to an embodiment of the present invention picks up an image by lifting a lens module, FIG. 4 is a view showing a state where a camera lens module according to an embodiment of the present invention lowers And acquiring the image.

The inspection image of the camera lens module is obtained for each of a plurality of lenses included in the camera lens module. For each lens, the image when the lower illumination 500 is turned on and the image when the upper illumination 600 is turned on are both Must be obtained.

The focus of the camera 200 mounted on the upper part of the frame 100 is fixed to one position and the elevating and lowering device 400 slowly moves the inspection stage 300 to move the inspection camera 300 to any one of the plurality of lenses, The camera 200 is focused, and the camera 200 can acquire an image capable of reading whether or not the foreign object is attached to the focused lens. 3 is a view schematically showing a state in which the lifting device 400 lifts up the inspection stage 300 and acquires an image. FIG. 4 shows a state in which the inspection stage 300 is lowered to acquire an image It is a typical figure. If the lower illumination 500 is turned on when the inspection stage 300 is raised, it is preferable that the inspection stage 300 is lowered and the upper illumination 600 is turned on when the lower illumination 500 is taken.

5 is a flow chart illustrating a method of inspecting a lens module using a camera lens module according to an embodiment of the present invention. In an embodiment of the present invention, the upper illumination may be turned on when the lens module is raised, the lower illumination may be turned on when the lens module is lowered, or vice versa.

First, the inspector puts the camera lens module on the inspection stage (S1). Thereafter, the upper illumination is turned on (S2), the elevating and lowering device raises the stage (S31), acquires an image of the lens focused on the camera (S32), and determines the presence of the foreign substance with the acquired image (S33) . Steps S31 to S33 are sequentially performed from the lens at the top to the lens at the bottom. When the inspection of the last lens in the state in which the upper illumination is turned on is completed, the upper illumination is turned off and the lower illumination is turned on (S4). Thereafter, the lifting / lowering device lowers the stage (S51), acquires an image of the lens focused on the camera (S52), and judges the presence of the foreign substance with the acquired image (S53). Steps S51 to S53 are sequentially performed from the lens at the bottom to the lens at the top. The information obtained from the individual images is collected to finally determine the failure of the camera lens module (S6).

Claims (5)

frame;
An inspection stage capable of positioning the lens module;
Illumination illuminating lens module;
A photographing camera fixed to the frame and photographing the lens module located on the inspection stage; And
And moving the inspection stage such that each lens of the lens module having the plurality of lenses is sequentially positioned at the focus position of the camera for photographing, And acquires an image of the camera lens module. The method according to claim 1,
And the illumination for illuminating the lens module is provided on the upper and lower portions of the inspection stage, respectively. 3. The method of claim 2,
And the inspection stage is installed on the upper part of the lower illumination. The method of claim 3,
And the ascending / descending device ascends and descends the lower illumination and the inspection stage together. 3. The method of claim 2,
Wherein the defective reading image is acquired sequentially for each lens in a state in which the individual illumination is turned on.
KR1020150058688A 2015-04-27 2015-04-27 Inspection apparatus for camera lens module KR20160127377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150058688A KR20160127377A (en) 2015-04-27 2015-04-27 Inspection apparatus for camera lens module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150058688A KR20160127377A (en) 2015-04-27 2015-04-27 Inspection apparatus for camera lens module

Publications (1)

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KR20160127377A true KR20160127377A (en) 2016-11-04

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KR1020150058688A KR20160127377A (en) 2015-04-27 2015-04-27 Inspection apparatus for camera lens module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101962072B1 (en) * 2018-08-14 2019-03-25 김정덕 Lens surface inspection device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150004157A (en) 2013-07-02 2015-01-12 조영진 soket for testing camera lens module of mobile device
KR20150015985A (en) 2013-08-02 2015-02-11 삼성전기주식회사 Camera module inspection system
KR20150026508A (en) 2013-09-03 2015-03-11 주식회사 탑 엔지니어링 Socket Board for Camera Module Inspection Device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150004157A (en) 2013-07-02 2015-01-12 조영진 soket for testing camera lens module of mobile device
KR20150015985A (en) 2013-08-02 2015-02-11 삼성전기주식회사 Camera module inspection system
KR20150026508A (en) 2013-09-03 2015-03-11 주식회사 탑 엔지니어링 Socket Board for Camera Module Inspection Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101962072B1 (en) * 2018-08-14 2019-03-25 김정덕 Lens surface inspection device

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A201 Request for examination
E601 Decision to refuse application