CN109804238A

CN109804238A - Optical detection device

Info

Publication number: CN109804238A
Application number: CN201780062143.7A
Authority: CN
Inventors: 米泽良
Original assignee: V Technology Co Ltd
Current assignee: V Technology Co Ltd
Priority date: 2016-11-09
Filing date: 2017-11-08
Publication date: 2019-05-24
Anticipated expiration: 2037-11-08
Also published as: CN109804238B; KR102339677B1; KR20190082198A; JP6912824B2; JPWO2018088423A1; WO2018088423A1

Abstract

The purpose of the present invention is to provide optical detection device, no matter defect is in which position of the non-end face for checking object, can pass through a device and check defect by once checking.Optical detection device of the invention is when substantially shooting checked property (G) from top to vertical using one-dimensional camera unit (13), from multiple illumination regions (30a) of the 1st region (31) that substantially semicircular cylinder face is arranged in and the substantially hemisphere face at both ends or the 2nd region (32) of substantially semiellipse spherical surface and the 3rd region (33) that are formed in the 1st region (31) to checked property (G) irradiation light, wherein, the central axis (ax) in the 1st region (31) is located on the median plane (S1) in the face of the substantially vertical direction comprising one-dimensional camera unit (13).In the 1st region (31), near median plane (S1) other than region, be arranged with illumination region (30a) along the direction substantially orthogonal with the direction of transfer (F) of checked property (G).In addition, the position on median plane (S1) is arranged with illumination region (30a) in the 2nd region (32) and the 3rd region (33).

Description

Optical detection device

Technical field

The present invention relates to optical detection devices.

Background technique

Patent Document 1 discloses following camera optical check devices, that is, multiple lighting devices are configured with, so that It is irradiated to checked property and the light for being incident on one-dimensional camera unit respectively becomes positive reflection light, diffuses, through light, and is every That these lighting devices are changed when the transfer of secondary one-dimensional camera unit lights timing, for the picture number transferred from one-dimensional camera unit According to each image data obtained after lighting by identical lighting device is integrated to generate integrated image data.

Citation

Patent document

Patent document 1:JP special open 2012-42297 bulletin

Summary of the invention

Subject to be solved by the invention

Invention described in Patent Document 1 is for checking the checked property of transparent plate.As the tested of transparent plate Cover glass used in looking into object, such as portable terminal can be enumerated etc..Cover glass is rectangular shape, and end face is carried out Attrition process.For the defects of the end face processing that checks such cover glass etc. (for example, notch of end face), need with identical Mode make entire end face in light emission, and its reflected light is made to be incident on camera unit.

In invention described in Patent Document 1, normal slope of the optical axis of one-dimensional camera unit relative to checked property 45 degree or so.Therefore, in invention described in Patent Document 1, although can be entered by the light that a part of end face (being set as end face I) reflects It is mapped to camera unit, but by the light of end face (the being set as end face II) reflection other than the I of end face is possible to that camera shooting list can't be incident on Member.Also, about end face II, defect can not be shot, can not detect defect such problems by existing.

Given this situation the present invention completes, its purpose is to provide optical detection devices, and no matter defect is in non- Which position for checking the end face of object, can pass through a device and check defect by once checking.

Means for solving the problems

In order to solve the above problems, optical detection device of the present invention is characterized in that, for example, having: equipped section, Checked property is carried in the horizontal direction；Transport unit moves the checked property for being equipped on the equipped section along direction of transfer；One Camera unit is tieed up, substantially vertical the checked property is shot from top, and be configured to longitudinal direction and the biography Send direction substantially orthogonal；And illumination part, there is multiple illumination regions to the checked property irradiation light, the illumination part The 1st region in substantially semicircular cylinder face is included, central axis is located at as the substantially vertical direction comprising the one-dimensional camera unit On the median plane in face；And the 2nd region and the 3rd region of substantially hemisphere face or substantially semiellipse spherical surface, it is formed in the described 1st The both ends in region are arranged the hair with multiple edges direction substantially orthogonal with the direction of transfer in the 1st region The band-like illumination region in light portion, the band-like illumination region be arranged near median plane described in the 1st region other than region, In the 2nd region and the 3rd region, the illumination region is arranged on the median plane.

The optical detection device being related to according to the present invention, with using one-dimensional camera unit substantially vertical from top to tested When looking into object and being shot, from the 1st region that substantially semicircular cylinder face is arranged in and substantially hemisphere face or substantially semiellipse spherical surface Multiple illumination parts in the 2nd region and the 3rd region are to checked property irradiation light, wherein the central axis in the 1st region is located at packet The face of substantially vertical direction containing one-dimensional camera unit, i.e. on median plane, the 2nd region and the 3rd region are formed in the 1st region Both ends.In the 1st region, in the region of median plane other than around, along the side substantially orthogonal with the direction of transfer of checked property To arrangement illumination region.Thereby, it is possible to the light for reflecting front end face and rear end face by checked property to be incident on one-dimensional camera shooting list Member.In addition, illumination region is arranged in the position on median plane in the 2nd region and the 3rd region.Thereby, it is possible to make by being examined The light of the left and right end face reflection of object is incident on one-dimensional camera unit.Therefore, no matter defect be in it is non-check object end face which Position can pass through a device and check defect by once checking.

Here it is possible to be, the band-like illumination region is configured to make the upper of optical axis and the median plane and the equipped section The intersection on surface intersects, and the band-like illumination region is with substantially 8 degree of optical axis and the median plane angulation or substantially 17 degree of the 1st band-like illumination region.The case where thereby, it is possible to for using the case where pearlescent pigment or without using pearlescent pigment, The image of the irregular colour that can detect Printing Department etc. is shot.

Here it is possible to be, have: control unit controls the transport unit with certain speed and transmits the checked property, and The one-dimensional camera unit is driven to shoot with constant interval to image, and same with the shooting of the one-dimensional camera unit Step ground makes the 1st light emitting region in the half region divided by the median plane in the 1st region, institute in the 1st region State the 3rd light emitting region on the median plane described in of the 2nd light emitting region other than the 1st light emitting region, the 2nd region, described 4th light emitting region and the 1st band-like illumination region of 3rd region on the median plane described in are irradiated respectively.Thereby, it is possible to During once transmission checked property, in the shinny image in the defects of each timed shooting front end face P, the rear end face P The shinny image of the defects of the shinny image of defect, the left and right end face P, Printing Department the defect image darker than other Printing Departments.

Here it is possible to be, the illumination part has configuration in the band-like illumination region and the median plane and described takes Cylindrical lens between the intersection of the upper surface in load portion.Thereby, it is possible to carry out optically focused to the light irradiated from band-like illumination region, improve The filming frequency (shortening shooting time) of one-dimensional camera unit.

Here it is possible to be to control the transport unit to transmit the checked property with certain speed, and have: the 1st camera shooting The upside or downside of the equipped section is arranged in unit；2nd camera unit clips the carrying with the 1st camera unit Portion is arranged on opposite side, so that optical axis is consistent with the optical axis of the 1st camera unit；1st coaxial-illuminating, from normal direction to The checked property irradiates directional light, and is the coaxial-illuminating of the 1st camera unit；And the 2nd coaxial-illuminating, with described I coaxial-illuminating clips the equipped section and is arranged on opposite side, and is the coaxial-illuminating of the 2nd camera unit, Xiang Suoshu the 1st Camera unit incidence irradiates from the 1st coaxial-illuminating and by the light of the checked property positive reflection, the 2nd camera unit of Xiang Suoshu Incidence is irradiated from the 2nd coaxial-illuminating and is irradiated by the light of the checked property positive reflection and from the 1st coaxial-illuminating And the light of the checked property is penetrated.Thereby, it is possible to the opaque part that can detect that checked property defect (such as Wound, notch of printed edge of printing part etc.) through image, the surface that can detect checked property, the wound at the back side, foreign matter Deng positive reflection image shot.

Here it is possible to be, have: the 2nd control unit drives the 1st camera unit and the 2nd camera unit It is dynamic, so as in a manner of the 1st, the 2nd mode, the 3rd mode these three irradiation modes make the 1st coaxial-illuminating or described 2nd same Axis illumination is irradiated, also, matchingly obtains image by the 1st camera unit with the irradiation of the 1st mode, and described The irradiation of 2nd mode matchingly obtains image by the 2nd camera unit, and the irradiation with the 3rd mode is matchingly by described 2nd camera unit obtains image, wherein and under the 1st mode, it is irradiated the 1st coaxial-illuminating with the 1st intensity, Under the 2nd mode, it is irradiated the 2nd coaxial-illuminating with the 1st intensity, under the 3rd mode, with the 2nd Intensity is irradiated the 1st coaxial-illuminating.Thereby, it is possible to be clapped during once transmission checked property with each timing It takes the photograph through image, positive reflection image.

Here it is possible to be, have: the 2nd camera unit clips the equipped section with the one-dimensional camera unit and is arranged on Opposite side, so that optical axis is consistent with the optical axis of the one-dimensional camera unit；1st coaxial-illuminating is detected from normal direction to described Object irradiation directional light is looked into, and is the coaxial-illuminating of the one-dimensional camera unit；And the 2nd coaxial-illuminating, it coaxial is shone with the described 1st It is bright to clip the equipped section and be arranged on opposite side, and be the coaxial-illuminating of the 2nd camera unit, the illumination part setting Between the one-dimensional camera unit and the transport unit, to the one-dimensional camera unit incidence from the illumination part or institute State the irradiation of the 1st coaxial-illuminating and by the light of the checked property positive reflection, the 2nd camera unit incidence of Xiang Suoshu is same from the described 2nd Axis illumination irradiation and by the light of the checked property positive reflection and irradiate from the 1st coaxial-illuminating and penetrated it is described be detected Look into the light of object.Thereby, it is possible to less camera unit to the saturating of the defect of the opaque part that can detect that checked property The positive reflection image for crossing image, the surface that can detect that checked property, the wound at the back side, foreign matter etc. is shot.

Here it is possible to be, have: the 3rd control unit controls the transport unit and is examined so that certain speed transmission is described Object, and the one-dimensional camera unit and the 2nd camera unit are driven, so as in a manner of the 1st, the 2nd mode, the 3rd These three irradiation modes of mode are irradiated the 1st coaxial-illuminating or the 2nd coaxial-illuminating, also, with the described 1st The irradiation of mode matchingly obtains image by the one-dimensional camera unit, and the irradiation with the 2nd mode is matchingly by the described 2nd Camera unit obtains image, and the irradiation with the 3rd mode matchingly obtains image by the 2nd camera unit, wherein in institute It states under the 1st mode, is irradiated the 1st coaxial-illuminating with the 1st intensity, under the 2nd mode, make the described 2nd coaxial Illumination is irradiated with the 1st intensity, under the 3rd mode, is irradiated the 1st coaxial-illuminating with the 2nd intensity. Thereby, it is possible to be shot with each timing through image, positive reflection image during once transmission checked property.

Here it is possible to be, the illumination part, which has, to be disposed adjacent with the illumination region and irradiates to from the illumination region The light diffusing board that is diffused of light.Thereby, it is possible to so that the light irradiated from multiple illumination regions is become elongated using light diffusing board Area source, the unfavorable condition for preventing the dotted light of illumination region to be reflected out in checked property.

Here it is possible to be, have: focal length adjustment optical element, to the focal length of the one-dimensional camera unit It is adjusted；And reflecting mirror, it is disposed adjacent with the equipped section, focal length adjustment optical element and described anti- It penetrates mirror to be arranged on the median plane, under vertical view, carries the region on the equipped section of the checked property, carries region On the downside of the vertical direction of the one-dimensional camera unit, under vertical view, the reflecting mirror is substantially orthogonal with the direction of transfer Direction on, be arranged on the outside for carrying region and with the adjacent position in the carrying region, the reflecting mirror it is anti- The face of penetrating is general plane, is substantially extended the reflecting surface along the direction of transfer, so that the reflecting surface and the center The line that face intersects is inclined relative to horizontal, the focal length adjustment with optical element be configured to by the one-dimensional camera shooting The line that unit is connected with the reflecting mirror is overlapped.Even there is partial cylinder shape or cylindroid shape in side as a result, Cover glass, can also be checked by once checking the defect for side.That is, by utilizing reflecting mirror to quilt It checks that the picture of the side of object is reflected to be channeled to one-dimensional camera unit, and utilizes focal length adjustment optics member Part extends the focal length of one-dimensional camera unit, so as to make focus be aligned in than checked property plane more on the lower Side.

Here it is possible to be, the focal length adjustment is glass plate with optical element, and is configured to big with plate thickness direction Cause orthogonal both ends of the surface in level.As a result, to focal length adjustment optical element incidence process and light from focus away from During being emitted from adjustment with optical element, light can be reflected, and the focal position of one-dimensional camera unit is extended.

Here it is possible to be, have: moving portion moves the one-dimensional camera unit in the up-down direction；Height obtains Portion obtains the height of the checked property；And mobile control division, the information obtained based on the height acquisition unit is to control Moving portion is stated, matchingly makes described one-dimensional take the photograph with the height change by the checked property under the one-dimensional camera unit As unit moves in the up-down direction.Even if can also pass through one as a result, in the case where the height of checked property changes Dimension camera unit come focus point alignment clearly as being shot.

Here it is possible to be, the height acquisition unit includes area source, to the direction substantially orthogonal with the direction of transfer Irradiation light；And the light of the checked property is irradiated from the area source and has passed through in side camera unit, incidence.Lead to as a result, It crosses and utilizes figure as the shadow image that side camera unit is dark to the part for having blocked light as checked property and other parts are bright As being shot, the height of checked property can be accurately obtained.

Here it is possible to be, the illumination part includes in the 2nd region and the 3rd region to shine described Portion is arranged in the light-emitting block of a column；And the 2nd cylindrical lens passed through from the light that the illumination region irradiates, in the 2nd region And in the 3rd region, the extended direction of the light-emitting block tilts relative to horizontal direction, the 2nd region with And in the 3rd region, the extended direction of the 2nd cylindrical lens is inclined relative to the extended direction of the light-emitting block Tiltedly.Thereby, it is possible to so that the focus of the light from the 2nd region and the 3rd area illumination is registered to checked property.Furthermore it is possible to by the 2nd Region, the 3rd region compensate the 1st region, so as to reducing the number of illumination region possessed by the band-like illumination region in the 1st region Mesh.

Here it is possible to be, the illumination part has the radiating component formed by the high material of thermal conductivity, the illumination region It is set to the radiating component.Thereby, it is possible to so that the thermal efficiency generated from illumination region is radiated well.

Here it is possible to be, has the air supplying part for sending out wind in the radiating component, the radiating component has multiple settings The plate of the illumination region, is extended the plate, the air supplying part is sent on the direction substantially orthogonal with the direction of transfer Out along the extended direction of the plate direction wind.Thereby, it is possible to improve cooling effect brought by radiating component.

Here it is possible to be, the downside of the equipped section is arranged in the 2nd camera unit, in the 2nd camera unit Circular polarisation filter is not set in upside, and the circular polarisation filter is configured to the plane phase in the direction substantially orthogonal with thickness direction The direction substantially orthogonal with the optical axis of the 2nd camera unit is slightly inclined.Thereby, it is possible to make by equipped section is arranged in The light of pick-up lens surface reflection of the 2nd camera unit of downside be incident on the video camera that the upside of equipped section is set, from And make the line for not including light in the image taken by the video camera.

Invention effect

According to the present invention, no matter defect is in which position of the non-end face for checking object, can by a device and Defect is checked by once checking.

Detailed description of the invention

Fig. 1 is the main view for indicating the summary of optical detection device 1 of the first embodiment.

Fig. 2 is the figure for indicating the details in three-dimensional illumination portion 30.

Fig. 3 is the schematic diagram for indicating the details of band-like illumination region 31a.

Fig. 4 is schematically shown optical detection device 1 using the face parallel with xz plane with the side comprising the 1st region 31 The figure in the section of the optical detection device 1 when formula is cut off.

Fig. 5 is the floor map in three-dimensional illumination portion 30.

Fig. 6 is the schematic diagram for indicating the details of band-like illumination region 32a.

Fig. 7 is the block diagram for indicating the electric structure of optical detection device 1.

Fig. 8 is the block diagram for illustrating the electrical connection between output section 73 and each structure of optical detection device 1.

Fig. 9 is to illustrate to be output to the 1st video camera 11, the 2nd video camera 12 and the letter in coaxial-illuminating portion 20 from output section 73 Number figure.

Figure 10 is the timing diagram in processing shown in Fig. 9.

Figure 11 is the figure for illustrating to be output to the signal in the 3rd video camera 13 and three-dimensional illumination portion 30 from output section 73.

Figure 12 be the defect that indicates to include in the output of signal shown in Figure 11 and the image that is shot by three-dimensional illumination portion 30 it Between corresponding figure.

Figure 13 is the figure for indicating the situation of the light of endface of cover glass G, and the path of light is indicated with two chain-dotted lines.

Figure 14 is the timing diagram in processing shown in Figure 11.

Figure 15 is an example through image of cover glass G.

Figure 16 is an example of the positive reflection image of cover glass G.

Figure 17 is an example of the shinny image of the defects of P inner surface of the front end of cover glass G (magnified partial view).

Figure 18 is an example of the defect of the Printing Department of the cover glass G image (magnified partial view) darker than other Printing Departments.

Figure 19 is the figure for the light-emitting block 30b-1 for schematically showing that variation is related to, and (A) is side view, and (B) is from figure Observe the figure of state shown in (A) in lower section

Figure 20 is the main view for indicating the summary of optical detection device 2 of the second embodiment.

Figure 21 is pair for indicating the order of shooting processing between the image that is shot by the 1st video camera 11, the 2nd video camera 12 The figure answered.

Figure 22 is the main view for indicating the summary of optical detection device 3 of the third embodiment.

Figure 23 is by the perspective view of a part amplification display of optical detection device 3.

Figure 24 is the figure for indicating to have cut off the Sketch in the state of optical detection device 3 with median plane S1.

Figure 25 is the figure for the relationship for indicating the position of cover glass G1 between the image that is shot by the 3rd video camera 13, and (A) is The enlarged drawing of the lateral parts of cover glass G1, (B) indicate a part of the image shot by the 3rd video camera 13.

Figure 26 is the situation figure for schematically showing the height to cover glass G1 and being measured, be from direction of transfer F substantially The figure of orthogonal direction observation.

Figure 27 is the figure for the situation for schematically showing that the height to cover glass G1 is measured, and is observed along direction of transfer F Figure.

Figure 28 is the summary for the three-dimensional illumination portion 30A for indicating that optical detection device of the third embodiment has Perspective view.

Figure 29 is the schematic diagram for indicating the details of band-like illumination region 31a-1.

Figure 30 is the schematic diagram for indicating the details of band-like illumination region 32a-1.

Figure 31 is the figure illustrated from the path of the three-dimensional illumination portion 30A light irradiated.

Figure 32 is the main view for indicating the summary of optical detection device 5 of the fifth embodiment.

Specific embodiment

Hereinafter, the embodiment that present invention will be described in detail with reference to the accompanying.In the drawings, same symbol is added to same element Number, duplicate part is omitted the description.

The present invention is the optical detection device of the cover glass G of the portable terminal of inspection as checked property etc..Based on by The image that optical detection device takes can check that the wound in the end face, surface, the back side of cover glass G, grinding are unequal and lack The defects of falling into, be printed on print unevenness, the notch of the part of cover glass G.In addition, in the present embodiment, exemplary optical inspection The mode that device checks the cover glass G of portable terminal etc., but simultaneously by the checked property of optical detection device inspection It is not limited to cover glass.

Cover glass G is ground into complete cycle as curved surface.In addition, carrying out printed portions at the back side of cover glass G.Hereinafter, will The abradant surface of the circular shape of circumferential surface is known as burnishing surface (hereinafter, the face P).In addition, the printing part in cover glass G carries out coating list The single color printing of the organic coating of color, coating become the solid color pigments of background color and overlappingly hyaline layer of the coating comprising pearlescent pigment Pearly-lustre smear, wherein the pearlescent pigment covers translucent particle using transparent titanium dioxide etc..

Fig. 1 is the main view for indicating the summary of optical detection device 1 of the first embodiment.Optical detection device 1 is main Include image pickup part 10, coaxial-illuminating portion 20, three-dimensional illumination portion 30, equipped section 40, transport unit 50 (referring to Fig. 8).

Equipped section 40 has multiple roller 40a, carries cover glass G in upside.Transport unit 50 makes the lid that equipped section 40 is arranged in Glass G is moved on direction of transfer F (being the direction x here), and is had such as the actuator (not shown) for rotating roller 40a. Equipped section 40 and transport unit 50 are it is well known that and the description is omitted.

(in the present embodiment, image pickup part 10 mainly includes the 1st video camera 11, the 2nd video camera 12 and the 3rd video camera 13 It is respectively equivalent to the 1st camera unit of the invention, the 2nd camera unit, one-dimensional camera unit).1st video camera 11, the 2nd video camera 12 and the 3rd video camera 13 mainly includes the lines sensor such as pick-up lens 11a, 12a, 13a and line CCD, CMOS 11b, 12b, 13b. Line sensor 11b, 12b, 13b are configured to keep the direction of transfer F of longitudinal direction and cover glass G substantially orthogonal (that is, along the side y To).Image pickup part 10 is it is well known that and the description is omitted.

1st video camera 11 is arranged in the upside (side+z) of equipped section 40, substantially vertical from top (direction+z) to lid glass Glass G is shot.2nd video camera 12 and the 1st video camera 11 clip equipped section 40 and are arranged on the opposite side (downside of equipped section 40 (side-z)), substantially vertical from below (direction-z) cover glass G is shot.1st video camera 11 and the 2nd video camera 12 It is consistent to be configured to optical axis oax.

The upside (side+z) of equipped section 40 is arranged in 3rd video camera 13, substantially claps from top cover glass G to vertical It takes the photograph.In addition, the 3rd video camera 13 be configured to the 1st video camera 11 and the 2nd video camera 12 in the horizontal direction position (with Position on the parallel face of x/y plane) it is different.

Coaxial-illuminating portion 20 includes the upside coaxial-illuminating 21 of the coaxial-illuminating as the 1st video camera 11；And as The downside coaxial-illuminating 22 of the coaxial-illuminating of 2 video cameras 12.Upside coaxial-illuminating 21 and downside coaxial-illuminating 22 are so-called Kohler's illumination irradiates directional light from normal direction (direction z) to cover glass G.Upside coaxial-illuminating 21 and downside coaxial-illuminating 22 opposite side be configured to optical axis oax consistently clamp equipped section 40 (upside coaxial-illuminating 21 be equipped section 40 the side+z, under Side coaxial-illuminating 22 is the side-z of equipped section 40).

Illustrate the structure of upside coaxial-illuminating 21 and downside coaxial-illuminating 22.Upside coaxial-illuminating 21 and downside are coaxial Illumination 22 is respectively provided with: light source 21a, 22a；By integrator 21b, 22b of the glass system of Illumination Distribution homogenization；Collector lens 21c,22c；Aperture 21d, 22d of the position substantially uniform with the focus of collector lens 21c, 22c are set；Light is transformed into flat Collimation lens 21e, 22e of row light；Make optical path curved mirror 21f, 22f；Slot with straight parallel threadiness and light optically focused is existed Fresnel Lenses 21g, 22g on straight line；And make optical path curved semi-reflective mirror 21h, 22h.

Illuminated component is surface mounted in the metal plate of aluminium etc. by light source 21a, 22a.The back side of metal plate is provided with heat dissipation Plate (heat sink).Illuminated component is the LED of white (for example, colour temperature is 5700K), and illumination angle is 120 degree or so.

It is disposed adjacent light source 21a, 22a and integrator 21b, 22b.Due to from LED to wider area illumination light, The light of a part is not incident upon integrator 21b, 22b but can leak out, but most light can be incident on integrator 21b, 22b and be pointed into cover glass G.

Semi-reflective mirror 21h is arranged on the optical axis of the 1st video camera 11.Therefore, the light reflected by semi-reflective mirror 21h is to cover glass G It is vertically irradiated, the 1st video camera 11 is incident to by the light of cover glass G positive reflection.In addition, the light reflected by semi-reflective mirror 21h The 2nd video camera 12 is incident to through cover glass G.

Semi-reflective mirror 22h is arranged on the optical axis of the 2nd video camera 12.Therefore, the light reflected by semi-reflective mirror 22h is to cover glass G It vertically irradiates, the 2nd video camera 12 is incident to by the light of cover glass G positive reflection.

Three-dimensional illumination portion 30 is from multiple directions to cover glass G irradiation light.It is irradiated from three-dimensional illumination portion 30 and anti-by cover glass G The light penetrated is incident to the 3rd video camera 13.Fig. 2 is the figure for indicating the details in three-dimensional illumination portion 30.In Fig. 2, shown with dotted line 3rd video camera 13 (pick-up lens 13a, line sensor 13b) out is shown with two chain-dotted lines towards the visual field of the 3rd video camera 13 position Set the path of the light of 13c and the 3rd video camera 13.

Three-dimensional illumination portion 30 has substantially the 1st region 31 in semicircular cylinder face and substantially hemisphere face or substantially semiellipse spherical surface The 2nd region 32 and the 3rd region 33.2nd region 32 and the 3rd region 33 are same shapes, are configured the two of the 1st region 31 End.

In the 1st region 31, illumination region 30a is set on substantially semicircular cylinder face.Illumination region 30a and light source 21a, 22a are same Sample has the LED and radiating component of white.The central axis ax in the 1st region 31 is located at the substantially vertical side comprising the 3rd video camera 13 To face, i.e. on median plane S1.

In the 2nd region 32 and the 3rd region 33, it is arranged on substantially hemisphere face or substantially on semiellipse spherical surface and shines Portion 30a.The central point in the 2nd region 32 and the 3rd region 33 is located on median plane S1.In the present embodiment, the 2nd region 32 with And the 3rd region 33 be substantially hemisphere face, but the shape in the 2nd region 32 and the 3rd region 33 is not limited to this.

In the 1st region 31, between the 3rd video camera 13 and equipped section 40, i.e., near the median plane S1 other than area Domain is arranged with illumination region 30a along the direction (that is, y direction) substantially orthogonal with direction of transfer F.The illumination region that will be arranged in the y-direction 30a is set as band-like illumination region 31a, 31b, 31c, 32d, 31e, 31f, 31g ... (explained later).In the present embodiment, although With 10 band-like illumination region 31a~31j (referring to Fig. 4), but the number of band-like illumination region is not limited to this.

Fig. 3 is the schematic diagram for indicating the details of band-like illumination region 31a.Since band-like illumination region 31a~31j is identical Structure, therefore only illustrate band-like illumination region 31a, omit the description band-like illumination region 31b~31j.

The whole length of band-like illumination region 31a is 3L, and there are three illumination region 30a is arranged in a column so that long side side for tool To length be L light-emitting block 30b.

The width w of illumination region 30a is 3.4mm or so, and length h is 3.4mm or so, the distance between adjacent illumination region 30a Substantially 0.2mm.In the present embodiment, due to the length L substantially 50mm of light-emitting block 30b, in a light-emitting block 30b The illumination region 30a of arrangement 13 or so.The light of band-like (threadiness) is irradiated from band-like illumination region 31a as a result,.

In addition, in the present embodiment, using White LED as illumination region 30a, but used in illumination region 30a Device is not limited to White LED.It is for example also can be used in illumination region 30a by blue or ultraviolet LED and yellow fluorophor Device obtained from combination, combine three color chips of RGB obtained from device, by blue led and red and green fluorescence Any one of device obtained from agent combination.

Then, illustrate the configuration of band-like illumination region 31a~31j in three-dimensional illumination portion 30.Fig. 4 be schematically show by with The figure in the section of the optical detection device 1 when the parallel face of xz plane cuts into optical detection device 1 comprising 1 region 31. In Fig. 4, the path from band-like illumination region 31a~31j light irradiated is shown with two chain-dotted lines.

The central axis ax in the 1st region 31 is located near the upper surface of cover glass G, band-like illumination region 31a~31j setting with On the circumference (referring to the dotted line in Fig. 4) of radius R centered on central axis ax.In addition, the thickness of cover glass G is very small, therefore The intersection substantially one of the upper surface of the position of the upper surface of cover glass G and median plane S1 and equipped section 40 (illustration omitted in Fig. 4) It causes.Radius R is roughly the same with the length 3L of band-like illumination region 31a~31j.

Band-like illumination region 31a~31j is configured to optical axis (referring to the chain-dotted line in Fig. 4) and median plane S1 and equipped section 40 intersection (intersection of median plane S1 and cover glass G), i.e. central axis ax intersect.

The position of band-like illumination region 31a~31e more leans on the side+x, the position ratio of band-like illumination region 31f~31j than median plane S1 Median plane S1 more leans on the side-x.

Band-like illumination region 31a, 31f are arranged in closest to the position of median plane S1.The optical axis of band-like illumination region 31a, 31f with Substantially 8 degree of median plane S1 angulation θ 1.

In the outside of band-like illumination region 31a, 31f, with band-like illumination region 31a, 31f be disposed adjacently band-like illumination region 31b, 31g.Substantially 17 degree of the optical axis and median plane S1 angulation θ 2 of band-like illumination region 31b, 31g.

In the outside of band-like illumination region 31b, 31g, with band-like illumination region 31b, 31g be disposed adjacently band-like illumination region 31c, 31h.Substantially 26 degree of the optical axis and median plane S1 angulation θ 3 of band-like illumination region 31c, 31h.

In the outside of band-like illumination region 31c, 31h, with band-like illumination region 31c, 31h be disposed adjacently band-like illumination region 31d, 31i.Substantially 35 degree of the optical axis and median plane S1 angulation θ 4 of band-like illumination region 31d, 31i.

In the outside of band-like illumination region 31d, 31i, with band-like illumination region 31d, 31i be disposed adjacently band-like illumination region 31e, 31j.Substantially 44 degree of the optical axis and median plane S1 angulation θ 5 of band-like illumination region 31e, 31j.

Band-like illumination region 31a~31j has the cylindrical lens 30c being arranged on optical axis.Cylindrical lens 30c for example pass through by The bar material of propylene cuts off along central axis and is ground and formed to section is cut.Cylindrical lens 30c is arranged on illumination region Between 30a and central axis ax, it will be condensed near central axis ax from the light that illumination region 30a irradiates.

Fig. 5 is the floor map in three-dimensional illumination portion 30.In Fig. 5, the visual field position of the 3rd video camera 13 is shown with dotted line 13c.In addition, in Fig. 5, light-emitting block 30d (being described in detail below) shown in dotted line.

2nd region 32 and the 3rd region 33 have by illumination region 30a be arranged in a column band-like illumination region 32a~32i, 33a~33i.In addition, in the present embodiment, although having each nine band-like illumination region 32a~32i, 33a~33i, band The number of shape illumination region is not limited to this.

Band-like illumination region 32a, 33a are arranged on median plane S1.Band-like illumination region 32b~32e, 33b~33e respectively by It is arranged on the extended line of band-like illumination region 31a~31d.Band-like illumination region 32f~32i, 33f~33i are respectively set at band On the extended line of shape illumination region 31f~31i.

Fig. 6 is the schematic diagram for indicating the details of band-like illumination region 32a.Due to band-like illumination region 32a~32i, 33a~ 33i is same structure, therefore only illustrate band-like illumination region 32a, omits band-like illumination region 32b~32i, 33a~33i Explanation.

Band-like illumination region 32a has multiple light-emitting block 30d that illumination region 30a is arranged in a column.In the present embodiment, Distance substantially 0.2mm between the length 1 substantially 18.5mm, adjacent illumination region 30a of light-emitting block 30d, therefore sent out at one Light block 30d arranges five or so illumination region 30a.Light-emitting block 30d, which is adjacent to, to be arranged so that illumination region 30a is located at radius R Substantially barrel surface on (referring to Fig. 6 dotted line).

Back to the explanation of Fig. 5.Light-emitting block in band-like illumination region 32a~32c, 32f, 32g, 33a~33c, 33f, 33g The number of 30d is five, and the number of the light-emitting block 30d in band-like illumination region 32d, 32h, 33d, 33h is four, band-like illumination region The number of light-emitting block 30d in 32e, 32i, 33e, 33i is two, but in band-like illumination region 32a~32i, 33a~33i The number of light-emitting block 30d is not limited to this.

Central point of the optical axis of each light-emitting block 30d in band-like illumination region 32a, 33a towards the 2nd region 32, the 3rd region 33 O2,O3.Central point of the optical axis of each light-emitting block 30d in band-like illumination region 32b~32i, 33a~33i towards the 1st region 31 O1.Wherein, the direction of the optical axis of each light-emitting block 30d in band-like illumination region 32a~32i, 33a~33i is not limited to shown in Fig. 5 Mode.

Fig. 7 is the block diagram for indicating the electric structure of optical detection device 1.Optical detection device 1 includes integrated circuit 71, defeated Enter portion 72, output section 73, power supply unit 74 and communication interface (I/F) 75.

Integrated circuit 71 is, for example, FPGA (Field-programmable gate array), is worked based on program To carry out the control of each section.Integrated circuit 71 has the control unit of each section of control optical detection device 1 (comprising the present invention Control unit, the 2nd control unit) function.Specifically, integrated circuit 71 obtains signal, base from input unit 72, output section 73 etc. In acquired signal come generate from output section 73 export signal.In the present embodiment, as integrated circuit 71 The program for realizing each function is saved in FPGA, but integrated circuit 71 is not limited to FPGA, the execution method of program is also not necessarily limited to This.

From various sensors such as position-detection sensors 81,82 to 72 input signal of input unit.Input unit 72, which has, to be carried out The switch of output mode setting, the setting of filming frequency etc. of image pickup part 10 of each channel of output section 73.

Output section 73 has multiple channels, from different channels to image pickup part 10, coaxial-illuminating portion 20, three-dimensional illumination portion 30 Etc. being exported.For example, output section 73 is to 50 output drive motor pulse of transport unit, and by horizontal synchronizing signal and vertical Synchronization signal etc. is output to image pickup part 10.In addition, output section 73 has the mistake display for indicating communication mistake, time-out etc., lid glass In the traveling of glass G, the capture of image pickup part 10 it is standby in, the medium LED of the illumination in coaxial-illuminating portion 20 or three-dimensional illumination portion 30, seven The display elements such as segmented display.

Fig. 8 is the block diagram being electrically connected for illustrating output section 73 with each structure of optical detection device 1.Output section 73 is by signal It is output to that image pickup part 10 (the 1st video camera 11, the 2nd video camera 12 and the 3rd video camera 13), (upside is coaxial in coaxial-illuminating portion 20 Illumination 21 and downside coaxial-illuminating 22), three-dimensional illumination portion 30 (band-like illumination region 31a~31j, 32a~32i, 33a~33i) With transport unit 50.

The signal exported from output section 73 is based on by integrated circuit 71 via communication I/F75 from personal computer (PC) Horizontal synchronizing signals etc. of 100 inputs generate.

Back to the explanation of Fig. 7.Power supply unit 74 for example inputs the voltage of AC100V, in inside comprising being transformed into required electricity The Switching Power Supply of pressure.Power supply unit 74 is supplied electric power to coaxial-illuminating portion 20, three-dimensional illumination portion 30.

Communication I/F75 from outer equipment receiving data and sends it to integrated circuit 71, and integrated circuit 71 is raw At data be sent to other equipment.In addition, communication I/F75 has the connection for carrying out programming, the debugging of integrated circuit 71 Device.I/F75 is communicated from PC100 acquirement horizontal synchronizing signal and vertical synchronizing signal, drive motor enabling signal etc., and to Integrated circuit 71 is exported.In addition, the image data that communication I/F75 takes to the output image pickup part 10 such as PC100.

The position of the detection of position-detection sensor 81,82 cover glass G.The detection of position-detection sensor 81 passes cover glass G Be sent under the 1st video camera 11 and the 2nd video camera 12 this case and the 1st video camera 11 and the 2nd video camera 12 it Lower pass through finishes this case.Cover glass G is transmitted to this case under the 3rd video camera 13 by the detection of position-detection sensor 82 And by finishing this case under the 3rd video camera 13.

PC100 includes CPU (Central Processing Unit) 101, RAM (Random Access Memory) 102, ROM (Read Only Memory) 103, input/output interface (I/F) 104, communication interface (I/F) 105 and Media Interface Connector (I/F)106。

CPU101 is worked based on the program saved in RAM102, ROM103, carries out the control of each section.From CPU101 The signal of output is output to optical detection device 1 via communication I/F105.

RAM102 is volatile memory.RAM102 saves data used in the program that CPU101 is executed and CPU101 Deng.ROM103 is the nonvolatile memory for being stored with various control programs etc..CPU101 is based on saving in RAM102, ROM103 Program work, carry out the control of each section.ROM103 save PC100 start when by CPU101 carry out bootstrap, The program etc. of hardware dependent on PC100.

CPU101 is via input and output I/F104 to output devices such as the input units such as keyboard, mouse 111, display devices 112 are controlled.CPU101 obtains data via network etc. from optical detection device 1 or other equipment via communication I/F105, And the data of generation are output to optical detection device 1.

CPU101 carries out output setting, the integrated circuit of the channel of output section 73 based on the input from input unit 111 The circulation setting of the order for lighting signal output, processing in 71, the cover glass since the edge detection to shooting of cover glass G The various settings such as the setting of moving distance (idling stopping distance) of G, and generate the setting data of these settings.Communicating I/F105 will The setting data that CPU101 is generated are output to optical detection device 1.In addition, CPU101 obtains image pickup part from optical detection device 1 10 images taken, and generate the image of inspection.The details that image generates processing will be described in detail below.

Medium I/F106 reads the program or data saved in storage medium 113, and is saved in RAM102.In addition, Storage medium 113 is, for example, IC card, SD card, DVD etc..

Moreover, it is achieved that the program of each function passes through after for example being read from storage medium 113 is installed to optics inspection by RAM102 Device 1 is looked into, is executed by CPU101.

The structure of optical detection device 1 and PC100 shown in Fig. 7 is in the feature for illustrating present embodiment to main The part that structure is illustrated, such as the structure that general information processing unit has is not foreclosed.Optical check The structural element of device 1 can be categorized into multiple structural elements according to process content and further, can also be by a structure Element executes the processing of multiple structural elements.In addition, optical detection device 1 and PC100 to be set as to different dresses in Fig. 7 It sets, but the structural element of PC100 also can be contained in optical detection device 1.

Illustrate the processing carried out by the optical detection device 1 constituted in this way.It is below processing mainly by integrated circuit 71 into Row.

Integrated circuit 71 generates the drive motor pulse that is driven to the roller 40a of equipped section 40, output section 73 by its It is output to transport unit 50.Cover glass G is moved along direction of transfer F on equipped section 40 with certain speed as a result,.

Cover glass G is transmitted to the 1st video camera 11, under the 2nd video camera 12 from position-detection sensor 81 if detecting, Then detection signal is inputted to integrated circuit 71 from position-detection sensor 81 via input unit 72.If having input the detection signal, Then integrated circuit 71 begins to shoot using the 1st video camera 11 and 12 pairs of the 2nd video camera through image, positive reflection image Processing.Hereinafter, illustrating the processing to being shot through image, positive reflection image using Fig. 9,10.

Fig. 9 is to illustrate to be output to the 1st video camera 11, the 2nd video camera 12 and the letter in coaxial-illuminating portion 20 from output section 73 Number figure.Channel (hereinafter referred to as ch) is a part of channel possessed by output section 73, and ch1~3 are directed towards the coaxial photograph in upside Bright 21 output, ch4~6 are directed towards the output of downside coaxial-illuminating 22.ROOP is the signal for indicating reprocessing, is output to Integrated circuit 71.In addition, the numerical value recorded in ch1~6 of Fig. 9 is irradiation upside coaxial-illuminating 21, downside coaxial-illuminating 22 Time, unit are μ sec (microseconds).

Figure 10 is the timing diagram in processing shown in Fig. 9.Shooting signal is to the 1st video camera 11 and the 2nd video camera 12 The signal driven is in integrated circuit 71 based on being generated with the horizontal synchronizing signal of constant periodical input.At this In embodiment, the frequency for shooting signal is 3kHz, shoots the interval T substantially 330 μ sec of signal.Shooting signal is to shoot The signal that period T1 is High and T2 is Low during blanking adjusts the 1st video camera the 11, the 2nd by adjusting T1 during shooting The light quantity (brightness of the image of shooting) of video camera 12.Coaxial-illuminating signal is generated synchronously with shooting signal.In this reality It applies in mode, T1 during shooting has been set as 300 μ sec, but T1 is not limited to this during shooting.

Hereinafter, the processing of Fig. 9, order 1~3 shown in 10 is described in detail.

(order 1) integrated circuit 71 generates the signal for being irradiated upside coaxial-illuminating 21 with 5 μ sec, and output section 73 will The signal is output to upside coaxial-illuminating 21.At the same time, integrated circuit 71 generates shooting signal, and output section 73 is output to 2nd video camera 12.The light for having penetrated cover glass G to 12 incidence of the 2nd video camera as a result, by 12 pairs of the 2nd video camera through images into Row shooting.It is lacking through in image, being able to detect the defect of opaque part, such as wound of printing part, printed edge Mouthful etc..

In order 1, the signal for being irradiated upside coaxial-illuminating 21 becomes while shooting signal and becoming High High is becoming Low after 5 μ sec.The time for the so-called 5 μ sec for being irradiated upside coaxial-illuminating 21 will shoot the phase Between compared with 300 μ sec are carried out in the case where be the very short time.In glass, 4% or so light reflection, remaining 96% The light of left and right penetrates.It therefore, can be to suitable brightness by shortening the time for being irradiated upside coaxial-illuminating 21 It is shot through image.

In addition, being irradiated upside coaxial-illuminating 21 with 5 μ sec, by 12 pairs of the 2nd video camera through figure in order 1 As being shot, but downside coaxial-illuminating 22 can also be made to be irradiated with 5 μ sec, penetrate image by 11 pairs of the 1st video camera It is shot.

(order 2) integrated circuit 71 generates the signal for being irradiated upside coaxial-illuminating 21 with 100 μ sec, output section 73 Output this signal to upside coaxial-illuminating 21.At the same time, integrated circuit 71 generates shooting signal, and output section 73 is output it To the 1st video camera 11.The 1st video camera 11 is incident on by the light of the surface positive reflection of cover glass G as a result, it is right by the 1st video camera 11 Positive reflection image is shot.

From upside coaxial-illuminating 21 along vertical direction to cover glass G irradiation light.Therefore, in the surface of cover glass G There is no for the part of wound, foreign matter etc., it is incident on the 1st video camera 11 since positive reflection occurs for light, what is taken Clapped very bright in image.In contrast, for the part that the surface in cover glass G has wound, foreign matter etc., since light is sent out Raw diffusing reflection is clapped very dark without being incident on the 1st video camera 11, therefore in the image taken.In such manner, it is possible to detect Wound, the foreign matter on the surface of cover glass G etc..Only mirror surface etc. is reflected in addition, detecting the wound on surface, foreign matter etc. using positive reflection light The high surface of rate is effective.

(order 3) integrated circuit 71 generates the signal for being irradiated downside coaxial-illuminating 22 with 100 μ sec, output section 73 Output this signal to downside coaxial-illuminating 22.At the same time, integrated circuit 71 generates shooting signal, and output section 73 is output it To the 2nd video camera 12.The 2nd video camera 12 is incident on by the light of the back side positive reflection of cover glass G as a result, it is right by the 2nd video camera 12 Reflected image is shot.In such manner, it is possible to detect the wound at the back side of cover glass G, foreign matter etc..

In addition, integrated circuit 71 generates the signal for indicating reprocessing while carrying out the output of order 3.Output section 73 The signal for indicating reprocessing is output to integrated circuit 71 while to downside 22 output signal of coaxial-illuminating.Integrated circuit 71 receive to indicate the signal of reprocessing, return process to initially, repeat to export letter shown in order 1~3 in order Number processing.

In order 2,3, the signal for being irradiated upside coaxial-illuminating 21, downside coaxial-illuminating 22 becomes in shooting signal Become High while at High, becomes Low after 100 μ sec.It is irradiated upside coaxial-illuminating 21 in order 2 And the time as the 100 μ sec for being irradiated downside coaxial-illuminating 22 in order 3 is T1 (300 μ sec) during shooting 1/3 or so, want much longer compared with the irradiation time (5 μ sec) in order 1.In this way, being shot to positive reflection image When, it, can be to suitable brightness by lengthening the time for being irradiated upside coaxial-illuminating 21 or downside coaxial-illuminating 22 Reflected image shot.

Integrated circuit 71 is while the signal output of the irradiation mode of above-mentioned order 1~3 via output section 73 to transmission 50 output drive motor pulse of portion.Cover glass G is uploaded to send by one side with certain speed in equipped section 40 as a result, makes lid glass Glass G and the position of the 1st video camera 11, the 2nd video camera 12 relatively change, and are imaged on one side by the 1st video camera 11 or the 2nd Machine 12 is shot.

Thereby, it is possible to penetrate image, positive reflection image with each timed shooting during once transmission checked property. By the 1st video camera 11, the 2nd video camera 12 to the processing of cover glass G shot through image, positive reflection image until lid glass Glass G continues until being finished by the 1st video camera 11 and the 2nd video camera 12.If cover glass G by the 1st video camera 11 and 2nd video camera 12 finishes, then the detection signal of position-detection sensor 81 is input to integrated circuit 71.If having input the inspection Signal is surveyed, then integrated circuit 71 just terminates to export to the 1st video camera 11, the 2nd video camera 12 and the signal in coaxial-illuminating portion 20.

Integrated circuit 71, which is continued on through, is output to transport unit 50 for drive motor pulse by output section 73.If by position detection Sensor 82 detects that cover glass G is sent under the 3rd video camera 13, then will test signal and pass through from position-detection sensor 82 Integrated circuit 71 is input to by input unit 72.If having input the detection signal, integrated circuit 71 starts with the 3rd video camera 13 The processing that reflected image is shot.Hereinafter, illustrating the processing shot to reflected image using Figure 11~Figure 14.

Figure 11 is the figure for illustrating to be output to the signal in the 3rd video camera 13 and three-dimensional illumination portion 30 from output section 73.ch11 ~46 be a part of channel possessed by output section 73.The numerical value recorded in ch11~46 is to shine three-dimensional illumination portion 30 The time penetrated, unit are μ sec.In Figure 11, the diagram of a part of ch is omitted.In addition, Figure 12 is to indicate signal shown in Figure 11 It exports and the corresponding figure between the defect for including in the image shot by the 3rd video camera 13.Figure 13 is the end for indicating cover glass G The figure of the situation of light at face shows the path of light with two chain-dotted lines.Figure 14 is the timing diagram in processing shown in Figure 11.

In Figure 11, ch11~40 are directed towards the output of band-like illumination region 31a~31j.In the present embodiment, by each Light-emitting block 30b distributes a channel.For example, ch11~13, which are directed towards band-like illumination region 31a, (constitutes its three light-emitting blocks It is 30d, same as below) output, ch14~16 are directed towards the output of band-like illumination region 31b, and ch17~19 are directed towards band-like shine The output of portion 31c, ch20~22 are directed towards the output of band-like illumination region 31d, and ch23~25 are directed towards the defeated of band-like illumination region 31e Out, ch26~28 are directed towards the output of band-like illumination region 31f, and ch29~31 are directed towards the output of band-like illumination region 31g, and ch32~ 34 are directed towards the output of band-like illumination region 31h, and ch35~37 are directed towards the output of band-like illumination region 31i, and ch38~40 are directed towards The output of band-like illumination region 31j.

In addition, ch41 is directed towards the output of band-like illumination region 32a, ch42 is directed towards the defeated of band-like illumination region 32b~32e Out, ch43 is directed towards the output of band-like illumination region 32f~32i.Further, ch44 is directed towards the output of band-like illumination region 33a, Ch45 is directed towards the output of band-like illumination region 33b~33e, and ch46 is directed towards the output of band-like illumination region 33f~33i.

Hereinafter, the processing of Figure 11, order 1~9 shown in 13 is described in detail.

The generation of (order 1) integrated circuit 71 is irradiated band-like illumination region 31f with 100 μ sec, makes band-like illumination region 31g Be irradiated with 120 μ sec, be irradiated band-like illumination region 31h with 150 μ sec, make band-like illumination region 31i with 180 μ sec into The signal that row irradiates, is irradiated band-like illumination region 31j with 210 μ sec, output section 73 output this signal to band-like shine Portion 31f~31j (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, and output section 73 is output to the 3rd and takes the photograph Camera 13.As a result, from face (the hereinafter referred to as P of the irradiation of the direction-x and the inside by the face P at the front end of cover glass G (end of the side+x) Inner surface) reflection light be incident on the 3rd video camera 13 (referring to Fig.1 3).It is by the image that the 3rd video camera 13 is shot in order 1 The shinny image (referring to Fig.1 2) of the defects of P inner surface of the front end of cover glass G (print unevenness, the uneven, wound of grinding etc.).

(order 2) in the case where the printing part to cover glass G has carried out pearly-lustre smearing, the generation of integrated circuit 71 makes band The signal that shape illumination region 31b is irradiated with 300 μ sec, is irradiated band-like illumination region 31g with 300 μ sec, output section 73 Output this signal to band-like illumination region 31b, 31g (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, defeated Portion 73 is output to the 3rd video camera 13 out.As a result, from 17 ° of the direction+x and the irradiation of 17 ° of the direction-x and by the print of cover glass G The light of brush portion reflection is incident on the 3rd video camera 13.

In addition, the case where the printing part to cover glass G has carried out printing (single color printing etc.) other than pearly-lustre is smeared Under, integrated circuit 71 generation be irradiated band-like illumination region 31a with 300 μ sec, make band-like illumination region 31f with 300 μ sec into The signal of row irradiation, output section 73 outputs this signal to band-like illumination region 31a, 31f.At the same time, integrated circuit 71 generates Signal is shot, output section 73 is output to the 3rd video camera 13.As a result, from 8 ° of the direction+x and the irradiation of 8 ° of the direction-x and by covering The light of Printing Department's reflection of glass G is incident on the 3rd video camera 13.

In order 2 by the image that the 3rd video camera 13 is shot be the Printing Department of cover glass G defect (irregular colour etc.) with Image (for example, the defect of Printing Department darker than other Printing Departments or bright image) (reference of the different contrast of other Printing Departments Figure 12).

The generation of (order 3) integrated circuit 71 is irradiated band-like illumination region 31a with 100 μ sec, makes band-like illumination region 31b Be irradiated with 120 μ sec, be irradiated band-like illumination region 31c with 150 μ sec, make band-like illumination region 31d with 180 μ sec into The signal that row irradiates, is irradiated band-like illumination region 31e with 210 μ sec, output section 73 output this signal to band-like shine Portion 31a~31e (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, and output section 73 is output to the 3rd and takes the photograph Camera 13.It is irradiated as a result, from the direction+x and is incident on the 3rd by the light that the P inner surface at the rear end of cover glass G (end of the side-x) reflects Video camera 13 (referring to Fig.1 3).It in order 3 is in the P inner surface of the rear end of cover glass G by the image that the 3rd video camera 13 is shot The shinny image (referring to Fig.1 2) of defect.

(order 4) integrated circuit 71 generates the signal for being irradiated band-like illumination region 32a with 200 μ sec, output section 73 Output this signal to band-like illumination region 32a (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, output section 73 are output to the 3rd video camera 13.As a result, from the irradiation of the direction-y and by the P inner surface at the left end of cover glass G (end of the side+y) The light of reflection is incident on the 3rd video camera 13.It in order 4 is the P of the left end of cover glass G by the image that the 3rd video camera 13 is shot The shinny image of the defects of inner surface (referring to Fig.1 2).

The generation of (order 5) integrated circuit 71 is irradiated band-like illumination region 33a, 33f~33i, 31f~31j with 3 μ sec Signal, output section 73 outputs this signal to band-like illumination region 33a, 33f~33i, 31f~31j (referring to Fig.1 1).It is same with this When, integrated circuit 71 generates shooting signal, and output section 73 is output to the 3rd video camera 13.As a result, from the direction+y and the side+y It is reflected to irradiation between the direction-x and by the table side (the hereinafter referred to as surface P) in the left end of cover glass G and the face P of left back end side Light be incident on the 3rd video camera 13 (referring to Fig.1 3).It in order 5 is a left side of cover glass G by the image that the 3rd video camera 13 is shot The image (referring to Fig.1 2) that the defects of the surface P of end and left back end side is reflected.In the images, the wound in the surface P, foreign matter The defects of major part be all reflected it is darker.

(order 6) integrated circuit 71 generates the signal for being irradiated band-like illumination region 33b~33e with 3 μ sec, output section 73 output this signal to band-like illumination region 33b~33e (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, Output section 73 is output to the 3rd video camera 13.The irradiation and from the left end of cover glass G between the direction+y and the direction+x as a result, 3rd video camera 13 is incident on by the light of the P surface reflection of front end side.In order 6 by the image that the 3rd video camera 13 is shot be from The image (referring to Fig.1 2) that the defects of surface P of front end side is reflected in the left end of cover glass G.

(order 7) integrated circuit 71 generates the signal for being irradiated band-like illumination region 33a with 200 μ sec, output section 73 Output this signal to band-like illumination region 33a (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, output section 73 are output to the 3rd video camera 13.As a result, from the irradiation of the direction+y and by the P inner surface at the right end of cover glass G (end of the side-y) The light of reflection is incident on the 3rd video camera 13.It in order 7 is the P of the right end of cover glass G by the image that the 3rd video camera 13 is shot The shinny image of the defects of inner surface (referring to Fig.1 2).

(order 8) integrated circuit 71 generates the signal for being irradiated band-like illumination region 32f~32i with 3 μ sec, output section 73 output this signal to band-like illumination region 32f~32i (referring to Fig.1 1).At the same time, integrated circuit 71 generates shooting signal, Output section 73 is output to the 3rd video camera 13.The irradiation and from the right end of cover glass G between the direction-y and the direction-x as a result, 3rd video camera 13 is incident on by the light of the P surface reflection of rear end side.In order 8 by the image that the 3rd video camera 13 is shot be from The image (referring to Fig.1 2) that the right end of cover glass G reflects the defects of surface P of rear end side.

(order 9) integrated circuit 71 generates the letter for being irradiated band-like illumination region 32a~32e, 31a~31e with 3 μ sec Number, output section 73 outputs this signal to band-like illumination region 32a~32e, 31a~31e (referring to Fig.1 1).At the same time, it integrates Circuit 71 generates shooting signal, and output section 73 is output to the 3rd video camera 13.As a result, from the direction-y and the direction-y and+x It is irradiated between direction and is incident on the 3rd video camera 13 from the right end of cover glass G by the light of the P surface reflection of right front ends side.Secondary It by the image that the 3rd video camera 13 is shot is that the defects of the right end of cover glass G and the surface P of right front ends side are reflected in sequence 9 Image (referring to Fig.1 2).

In addition, integrated circuit 71 generates the signal for indicating reprocessing, output section 73 while carrying out the output of order 9 The signal for indicating reprocessing is output to integrated circuit 71.Integrated circuit 71 receives to indicate the signal of reprocessing, makes to handle Back to initial, repeat the processing for exporting signal shown in order 1~9 in order.

Here, when being checked respectively the P inner surface of left end, right end in order 4,7, than in order 5,6,8,9 In time when checking the surface P much longer time be irradiated band-like illumination region 32a, 33a.Therefore, secondary Shoot the pure white image for obtaining shinny saturation in the face P of cover glass G in sequence 4,7 respectively by the 3rd video camera 13.

In addition, order 1~9 shown in Figure 11,12 etc. is an example, check point, the scope of examination order can arbitrarily set. In addition, from a left side of cover glass G shown in inspection and order 6 for the P inner surface of the front end of cover glass G shown in order 1 For the inspection for holding the surface P of the front end side carried out, in the central portion of cover glass G, rear end be it is unwanted, for order The rear end side carried out shown in the inspection of the P inner surface of the rear end of cover glass G shown in 3 and order 8 from the right end of cover glass G The surface P inspection for, be unwanted in the front end of cover glass G, central portion.Integrated circuit 71 can be according to expression The information of the length of cover glass G is asked to calculate drive motor umber of pulse based on the drive motor umber of pulse of output The position for taking cover glass G omits order 1,3,6,8 according to the position of cover glass G.

Figure 14 is the timing diagram in processing shown in Figure 11.In addition, only showing and being irradiated with 100 μ sec about order 1 Signal.It is identical as situation shown in Fig. 10 to shoot signal.The signal for being irradiated three-dimensional illumination portion 30 becomes in shooting signal Become High while at High, and becomes Low after irradiation time respectively.

In addition, making the case where being incident on the 3rd video camera 13 by the light of P surface reflection and entering the light reflected by Printing Department In the case where being mapped to the 3rd video camera 13, necessary light quantity is 1:100 or so.Therefore, the light reflected by the face P is made to be incident on the 3rd The case where video camera 13 and make by Printing Department reflect light be incident on the 3rd video camera 13 in the case where, make three-dimensional illumination portion 30 Irradiation time is different.

Integrated circuit 71 is exported to transport unit 50 via output section 73 and is driven while the signal output of above-mentioned order 1~9 Dynamic motor pulses.One side transmits cover glass G on equipped section 40 with certain speed image cover glass G and the 3rd as a result, The position of machine 13 relatively changes, and is shot on one side by the 3rd video camera 13.

Thereby, it is possible to be come with each timing shinny to the defects of the front end face P during once transmission cover glass G The shinny image of the defects of the shinny image of the defects of image, the rear end face P, the left and right end face P, Printing Department defect than other The dark image of Printing Department is shot.By the 3rd video camera 13 come shooting through image, positive reflection image to cover glass G Processing until cover glass G by the 3rd video camera 13 finish until all continue.If cover glass G is finished by the 3rd video camera 13, Then the detection signal of position-detection sensor 82 is input into integrated circuit 71.If having input the detection signal, integrated circuit 71 terminate to export to the 3rd video camera 13 and the signal in three-dimensional illumination portion 30.

Later, integrated circuit 71 carries out the output of drive motor pulse with given umber of pulse to transport unit 50, makes to cover Glass G is moved to that processing terminate position.Then, integrated circuit 71 terminates a series of processing.

If a series of, processing terminate, is taken by the 1st video camera 11, the 2nd video camera 12 and the 3rd video camera 13 Image is output to PCI00 via output section 73.CPU101 is from by the 1st video camera 11, the 2nd video camera 12 and the 3rd video camera The image of inspection is generated in 13 images taken.In the present embodiment, CPUI01 is imaged from by the 1st video camera the 11, the 2nd The image taken with identical light illumination mode is extracted among the image that machine 12 and the 3rd video camera 13 take, they are connected Knot gets up to generate flat image.Hereinafter, illustrating that image generation is handled.

CPU101 is generated from the image taken by the 1st video camera 11 and the 2nd video camera 12 through image and just Reflected image.In to the processing shot through image, positive reflection image, as shown in Figures 9 and 10, repeat secondary The irradiation of the irradiation mode of sequence 1~3.Therefore, CPU101 is in the image taken by the 2nd video camera 12 using the 1st frame as base Standard extracts the frame every three frames (the 1st frame, the 4th frame ...), these images are linked up generation two dimensional image.It generates as a result, Cover glass G's penetrates image (flat image).It is that opaque printed part is reflected as shown in Figure 15 through image Darker image is able to confirm that the defective part (the circle mark portion of the dotted line in Figure 15) of printing.

In addition, CPU101 in the image taken by the 1st video camera 11 by 2 frame on the basis of extract every three frames These images are linked up generation two dimensional image by the frame of (the 2nd frame, the 5th frame ...).As a result, generate upside positive reflection image, Positive reflection image (flat image) i.e. in the surface of cover glass G.Positive reflection image be as shown in Figure 16 no defect ( In Figure 16, exemplify wound) part be reflected it is brighter, wound be reflected darker image.In addition, even if wound and printing part Overlapping, due to comparing printing part, the reflectivity of glass surface is higher, therefore wound is clapped darker than other parts.

Further, CPU101 in the image taken by the 2nd video camera 12 by 3 frame on the basis of come extract every These images are linked up generation two dimensional image by the frame of three frames (the 3rd frame, the 6th frame ...).The positive reflection of downside is generated as a result, Image, i.e. cover glass G the back side in positive reflection image (flat image).

In addition, CPU101 generates reflected image from the image taken by the 3rd video camera 13.It is carried out to reflected image In the processing of shooting, as shown in Figure 11~13, repeat the irradiation of the irradiation mode of order 1~9.Therefore, CPU101 It is extracted on the basis of in the image taken by the 3rd video camera 13 by 1 frame every nine frames (the 1st frame, the 10th frame ...) These images are linked up generation two dimensional image by frame.As a result, as shown in Figure 17, in the P of front end for generating cover glass G The flat image of the shinny cover glass G in the defects of surface.

CPU101 in the image taken by the 3rd video camera 13 by 2 frame on the basis of extract every nine frames the (the 2nd Frame, the 11st frame ...) frame, these images are linked up into generation two dimensional image.As a result, as shown in Figure 18, lid glass is generated Flat image of the defect of the Printing Department of glass G than the cover glass G that other Printing Departments clap secretly.

In addition, for ease of description, a part of flat image is amplified in Figure 17,18, shown around defect black Line.

CPU101 in the image taken by the 3rd video camera 13 by 3 frame on the basis of extract every nine frames the (the 3rd Frame, the 12nd frame ...) frame, these images are linked up into generation two dimensional image.Table in the P of the rear end of cover glass G is generated as a result, The flat image of the shinny cover glass G in the defects of face.

CPU101 in the image taken by the 3rd video camera 13 by 4 frame on the basis of extract every nine frames the (the 4th Frame, the 13rd mesh ...) frame, these images are linked up into generation two dimensional image.Table in the P of the left end of cover glass G is generated as a result, The flat image of the shinny cover glass G in the defects of face.

CPU101 in the image taken by the 3rd video camera 13 by 5 frame on the basis of extract every nine frames the (the 5th Frame, the 14th frame ...) frame, these images are linked up into generation two dimensional image.Left end and the rear end of cover glass G are generated as a result, The flat image for the cover glass G that the defects of surface P of side is reflected.

CPU101 in the image taken by the 3rd video camera 13 by 6 frame on the basis of extract every nine frames the (the 6th Frame, the 15th frame ...) frame, these images are linked up into generation two dimensional image.Generate as a result, from the left end of cover glass G will before The flat image of the cover glass G of the defects of surface P of end side reflection.

CPU101 in the image taken by the 3rd video camera 13 by 7 frame on the basis of extract every nine frames the (the 7th Frame, the 16th frame ...) frame, these images are linked up into generation two dimensional image.Table in the P of the right end of cover glass G is generated as a result, The flat image of the shinny cover glass G in the defects of face.

CPU101 in the image taken by the 3rd video camera 13 by 8 frame on the basis of extract every nine frames the (the 8th Frame, the 17th frame ...) frame, these images are linked up into generation two dimensional image.Generate as a result, from the right end of cover glass G will after The flat image of the cover glass G of the defects of surface P of end side reflection.

CPU101 in the image taken by the 3rd video camera 13 by 9 frame on the basis of extract every nine frames the (the 9th Frame, the 18th frame ...) frame, these images are linked up into generation two dimensional image.Right end and the front end of cover glass G are generated as a result, The flat image for the cover glass G that the defects of surface P of side is reflected.

According to the present embodiment, due to using three-dimensional illumination portion 30 to come from all directions to cover glass G irradiation light to image Shot, thus no matter defect be in cover glass G end face which position, an optical detection device 1 can be used And defect is checked by once checking.

In particular, in the 1st region 31, near the median plane S1 other than region, arrange illumination region 30a in the y-direction. Therefore, band-like light can be irradiated to cover glass G, the position independent of the direction y to the region near central axis ax with phase Same mode is checked.

Further, since having multiple band-like illumination region 31a~31j, therefore can be from various angles near central axis ax Area illumination light.It is 8 from optical axis and median plane S1 angulation in order to which the whole picture to the defects of the face P is shot Light source near degree is until light source while irradiation light near 44 degree are critically important.Therefore, in order in the face P to front-end and back-end The whole picture of defect is shot, and it is critically important to have multiple band-like illumination region 31a~31j.In addition, in the 2nd region 32 and the 3rd It, can be for the left and right sides since the position on median plane S1 is provided with band-like illumination region 32a, 33a in region 33 The whole picture of the face P shooting defect.

In addition, according to the present embodiment, by by band-like illumination region 31b, 31g be configured to make optical axis and median plane S1 institute at Substantially 17 degree of angle, θ 2, and by 13 pairs of light of the 3rd video camera because pearly-lustre print due to reflect when scattering light shoot, thus The image that the contrast of defect is bigger compared with the gloss of pearlescent material can be shot.

For example, being carried out using band-like illumination region 31a, 31f of optical axis and substantially 8 degree of median plane S1 angulation θ 1 In the case where shooting, the gloss of pearlescent material can be clapped very strong.In addition, for example, using formed by optical axis and median plane S1 Angle, θ 3 the case where substantially 26 degree band-like illumination region 31c, 31h are shot, utilizes angle formed by optical axis and median plane S1 θ 4 is spent in the case that substantially 35 degree band-like illumination region 31d, 31i are shot, the contrast of the defect part of pearly-lustre smearing It can become smaller.

In contrast, as in the present embodiment, by being shone from relative to normal direction in 17 degree of angle to cover glass G Light is penetrated, so as to shoot the contrast of defect part of pearly-lustre smearing image lower than other parts or high, and pearly-lustre The gloss of material is difficult to involve the threshold value of defects detection.Therefore, easily pearly-lustre can be smeared based on the photographed images Defect is detected.

In addition, according to the present embodiment, by by band-like illumination region 31a, 31f be configured to make optical axis and median plane S1 institute at Substantially 8 degree of angle, θ 1, and from relative to normal direction in 8 degree of angle to cover glass G irradiation light, so as to shoot list The contrast of the defect part of color printing image lower than other parts or high.

In addition, in the present embodiment, not changing the shooting time of image pickup part 10, changes and come from coaxial-illuminating portion 20, the irradiation time of the light in three-dimensional illumination portion 30, so as to be made light quantity different according to content of shooting.

In addition, in the present embodiment, being arranged in correspondence with three-dimensional illumination portion 30 with the 3rd video camera 13, and from by the 3rd camera shooting The image taken with identical irradiation mode is chosen among the image that machine 13 takes, and is generated different by each irradiation mode Flat image, so as to the image for realizing and having used the shooting of multiple video cameras same with the smallest video camera number.

In addition, in the present embodiment, optical detection device 1 has band-like illumination region 31a, 31f and band-like illumination region Both 31b, 31g, thus the case where having used pearlescent pigment, without using pearlescent pigment the case where any case under, It can be shot using image of the identical device to the irregular colour that can detect that Printing Department etc..

In addition, in the present embodiment, although the optical axis of band-like illumination region 31a, 31f and median plane S1 angulation θ 1 Substantially 8 degree, as long as but 1 substantially 8~10 degree of angle, θ.In addition, 2~θ of angle, θ 5 is also not necessarily limited to the angle of diagram.

In addition, in the present embodiment, the image of defects detection is generated by PCI00, but in PC100, it can also To detect the defect of cover glass G based on image generated.For example, for image shown in Figure 14, it can be by pixel Value and threshold value are compared to detection defect.In addition, for example, be directed to image shown in figure 15, can be by calculating multiple pictures The average value of element is simultaneously compared to detection defect to the average value and threshold value.

In addition, in the present embodiment, cylindrical lens 30c is provided on the optical axis of band-like illumination region 31a~31j, but It is that cylindrical lens 30c is not required.Wherein, it with cylindrical lens 30c, can be incited somebody to action by cylindrical lens 30c The light irradiated from illumination region 30a is condensed near central axis ax, and thus, it is possible to increase the light quantity towards the 3rd video camera 13.Therefore, It can be improved the filming frequency (shortening shooting time) of image pickup part 10.

In addition, in the present embodiment, as shown in Figure 11, by band-like illumination region 32a, 32b~32e, 32f~32i It is connect with respectively different channel, band-like illumination region 33a, 33b~33e, 33f~33i is connect with respectively different channel, but It is that relationship between band-like illumination region 32a~32i, 33a~33i and channel is not limited to this.For example, can be by band-like illumination region 32b~32i, 33b~33i are connect with a channel, can also by band-like illumination region 32a~32i, 33a~33i with it is respectively different Channel connection.

In addition, in the present embodiment, the irradiation time under each irradiation mode shown in Fig. 9,10,11,13 is shown, but It is irradiation time is only to illustrate, irradiation time is not limited to value documented by these.In addition, each shown in Fig. 9,10,11,13 Under irradiation mode, irradiation time is defined with μ sec, but irradiation time can also be to come relative to the ratio of shooting time Regulation.

In addition, in the present embodiment, illumination region 30a has light-emitting block 30b, the 30d for being arranged in a column, but light-emitting block 30b, 30d also can have light diffusing board.Figure 19 is the figure for the light-emitting block 30b-1 for schematically showing that variation is related to, Figure 19's It (A) is side view, (B) of Figure 19 is the figure of the state shown in (A) of Figure 19 from the lower section in Figure 19 (A).

In light-emitting block 30b-1, the biconvex lens (lenticular as light diffusing board is disposed adjacently with illumination region 30a lens)30e.Biconvex lens 30e is configured to cover multiple illumination region 30a.Biconvex lens 30e with impartial spacing by being incited somebody to action A large amount of sections are that the elongated convex lens of arch arranges, to the orientation (longitudinal direction with convex lens with convex lens Orthogonal direction) ingredient of light in identical direction diffused.In light-emitting block 30b-1, the orientation of convex lens and hair Light portion 30a is identical.Therefore, it is diffused from the light that illumination region 30a irradiates by biconvex lens 30e, biconvex lens 30e can be passed through The light irradiated from multiple illumination region 30a is set to become an elongated area source.

For example, in the case where no biconvex lens 30e, based on by cover glass G the front end face P and/or the rear end face P just The light of reflection when being checked, may reflect the dotted light of illumination region 30a in the front end face P and/or the rear end face P, but It is that illumination region 30a is covered by setting biconvex lens 30e, the generation of such unfavorable condition can be prevented.

In addition, the inspection as the front end face P, the rear end face P, consideration keeps band-like illumination region 31b, band-like illumination region 31g faint Ground shines and the photo-beat of band-like illumination region 31b, band-like illumination region 31g is entered the method to the front end face P, the rear end face P.At this point, There is no in the case where biconvex lens 30e in band-like illumination region 31b, 31g, dotted light can be taken in the front end face P, the rear end face P, It is checked with can not be successfully.In contrast, in the case where band-like illumination region 31b, 31g are provided with biconvex lens 30e, due to Dotted light is taken in the front end face P, the rear end face P, therefore whether can be bent by the light to check and the front end face P, the rear end face P The relevant unfavorable condition of grinding.

In addition, in Figure 19, a piece of biconvex lens 30e is provided in a light-emitting block 30b-1, but biconvex lens 30e The piece number be not limited to this.Also can be set into will partially cover multiple illumination region 30a made of the arrangement of multiple biconvex lens.This Outside, light diffusing board is not limited to biconvex lens.

In the 1st embodiment of the invention, to the image for having used coaxial-illuminating and used by different video cameras The image of three-dimensional illumination is shot, but can also by identical video camera to the image for having used coaxial-illuminating and The image of three-dimensional illumination has been used to be shot.

2nd embodiment of the invention is the mode shot by two video cameras.Hereinafter, the 2nd embodiment of explanation The optical detection device 2 being related to.In addition, being directed to part identical with optical detection device 1, same symbol is added, is omitted the description.

Figure 20 is the main view for indicating the summary of optical detection device 2 of the second embodiment.Optical detection device 2 Mainly include image pickup part 10A, coaxial-illuminating portion 20, three-dimensional illumination portion 30, equipped section 40, transport unit 50 (illustration omitted).

Image pickup part 10A include the 1st video camera 11 (in the present embodiment, being equivalent to one-dimensional camera unit of the invention), 2nd video camera 12 (being equivalent to the 2nd camera unit of the invention).1st video camera 11, the configuration of the 2nd video camera 12 and optics are examined It is identical to look into device 1.

Three-dimensional illumination portion 30 is arranged between the 1st video camera 11 and equipped section 40.In addition, three-dimensional illumination portion 30 is arranged in The position that the optical axis of mandrel ax and the 1st video camera 11 intersects.By band-like illumination region 31a, 31f optical axis and median plane S1 institute at Substantially 8 degree of angle, θ 1 (referring to Fig. 4), therefore the light from upside coaxial-illuminating 21 will not be blocked by three-dimensional illumination portion 30.

Illustrate the processing carried out by the optical detection device 2 constituted in this way.Integrated circuit 71 (includes the 3rd control of the invention Portion processed) the drive motor pulse for driving the roller 40a of equipped section 40 is generated, output section 73 is output to transport unit 50.As a result, Cover glass G is moved along direction of transfer F on equipped section 40 with certain speed.

If from position-detection sensor 81 detect by cover glass G be transmitted to the 1st video camera 11, the 2nd video camera 12 it Under, then it will test signal from position-detection sensor 81 and be input to integrated circuit 71 via input unit 72.If having input the detection Signal, then integrated circuit 71 starts to carry out the processing shot by the 1st video camera 11 to reflected image and by the 1st video camera 11 and the 2nd 12 pairs of the video camera processing shot through image and positive reflection image.

The processing (processing of the order 1~9 in Figure 21) shot by the 1st video camera 11 to reflected image will be in addition to that will collect It is output to other than 11 this point of the 1st video camera at the shooting signal that circuit 71 generates, with place conducted in optical detection device 1 Reason (Figure 11,12 and 14) is identical, therefore omits the explanation of details.

Integrated circuit 71 starts after the processing for terminating order 1~9 to penetrating image, positive and negative shown in order 10~12 Penetrate the processing that image is shot.Processing shown in order 10~12 and processing (processing of order 1~3) phase shown in Fig. 9,10 Together, thus omit details explanation.

Integrated circuit 71 generates the signal for indicating reprocessing while carrying out the output of order 12, and via output section 73 are output to integrated circuit 71.Integrated circuit 71 receive indicate reprocessing signal, and return process to initially, repeat into Row exports the processing of signal shown in order 1~12 in order.

According to the present embodiment, it is able to use an optical detection device 2 and checks defect by once checking.This Outside, it can be shot with the video camera number of minimum limit (two) to reflected image, through image, positive reflection image.

In addition, in the present embodiment, semi-reflective mirror 21h is provided on the optical axis of the 1st video camera 11, therefore shine from solid The light quantity that the 1st video camera 11 is irradiated and is incident in bright portion 30 is that from three-dimensional illumination portion 30, irradiation is incorporated in optical detection device 1 It is mapped to the substantially half of the light quantity of the 3rd video camera 13.It is therefore preferable that the light irradiated from three-dimensional illumination portion 30 is made to brighten.In addition, In present embodiment, the picture number shot by the 1st video camera 11 is more than the 1st embodiment, therefore preferably makes from solid The light that illumination portion 30 is irradiated brightens, and improves filming frequency.

In the 1st embodiment of the invention, the inspection that the cover glass G in the face P of circular shape is formd around is carried out, But the form of cover glass is not limited to this.Recently, the curved surface being able to use around cover glass deepens and the curvature portion is The cover glass of partial cylinder shape or cylindroid shape.

3rd embodiment of the invention be to the cover glass around with partial cylinder shape or cylindroid shape into The mode that row checks.Hereinafter, illustrating optical detection device 3 of the third embodiment.In addition, being directed to and optical detection device 1 Identical part adds same symbol, omits the description.

Figure 22 is the main view for indicating the summary of optical detection device 3 of the third embodiment.Optical detection device 3 Mainly include image pickup part 10, coaxial-illuminating portion 20, three-dimensional illumination portion 30, equipped section 40, transport unit 50 (illustration omitted), side Inspection portion 60 and height acquisition unit 90.

Figure 23 is by the perspective view of a part amplification display of optical detection device 3.Side inspection portion 60 mainly has coke Point distance adjustment optical element 61,62 and reflecting mirror 63,64.Focal length adjustment optical element 61,62 and reflecting mirror 63,64 are located on the median plane S1 of the substantially vertical direction comprising the 3rd video camera 13.

Focal length adjustment optical element 61,62 is the optical element for adjusting the focal length of the 3rd video camera 13.At this In embodiment, as focal length adjustment optical element 61,62, the glass plate of thick plate-like is used.Focal length adjustment is used Optical element 61,62 is configured to make with the substantially orthogonal both ends of the surface in plate thickness direction in level.

Focal length adjustment optical element 61 and focal length adjustment optical element 62 are on the direction x and the direction z Position it is roughly the same, and be configured to clip the line ax1 upwardly extended in the side z at the center by the 3rd video camera 13 it is right It sets.In addition, focal length adjustment optical element 61,62 is arranged more upper than three-dimensional illumination portion 30 (side+z).

Reflecting mirror 63,64 is the structure for the picture of the side of cover glass G1 being reflected and being channeled to the 3rd video camera 13 Part.Reflecting mirror 63,64 is generally plate like, and is disposed adjacent with equipped section 40.In the present embodiment, adjacent roller is set Between 40a and roller 40a.

The position of reflecting mirror 63 and reflecting mirror 64 on the direction x and the direction z is roughly the same, and is configured to clip logical Cross the line ax1 that the side z at the center of the 3rd video camera 13 upwardly extends and opposed.In addition, under overlooking, reflecting mirror 63 and reflecting mirror 64 Respectively on the direction substantially orthogonal with direction of transfer F, the outside for carrying region is set and the position adjacent with region is carried. Here, so-called region of carrying is the region on the equipped section 40 for carry cover glass G1, under the vertical direction comprising the 3rd video camera 13 The region of side.In Figure 23, the state that cover glass G1 is mounted in and carries region is illustrated.

Figure 24 is the figure for indicating the Sketch in the state of cutting off optical detection device 3 with median plane S1.Figure 24 table Show the situation from the downstream side direction of transfer F (direction+x).Two chain-dotted lines in Figure 24 are schematically shown to the 3rd video camera 13 The path of incident light.

Reflecting surface 63a, 64a of reflecting mirror 63,64 are general planes, are substantially extended reflecting surface along direction of transfer F 63a, 64a, so that the line (in Figure 24, indicating the line of reflecting surface 63a, 64a) intersected with median plane S1 with respect to the horizontal plane inclines Tiltedly.

On median plane S1, reflecting mirror 63 and reflecting mirror 64 are located at the two sides of cover glass G1.Cover glass G1 is being carried In the state of equipped section 40, have with the plane Ga of horizontal direction parallel and inclined side Gb relative to horizontal direction.Side Face Gb is the cylindrical shape or cylindroid shape of part, side Gb gradient relative to horizontal direction substantially 30~45 Degree.In addition, the end Ge of the side Gb of two sides is equipped on roller 40a.

Plane Ga as obstructed overfocus is apart from adjustment optical element 61,62, be directed into pick-up lens 13a.Change speech It, on the line for connecting pick-up lens 13a with plane Ga, there is no focal length adjustment optical elements 61,62.

In contrast, side Gb picture by reflecting surface 63a, 64a reflect and by focal length adjustment optical element 61, Pick-up lens 13a is directed into after 62.In other words, by focal length adjustment optical element 61,62 be configured to by camera lens The line that head 13a is connected with reflecting surface 63a, 64a is overlapped.

In addition, in the present embodiment, focal length adjustment is cut a part of inside with optical element 61,62, make Focal length adjustment is obtained not to be located on the line for connecting pick-up lens 13a with plane Ga with optical element 61,62.

Focal position F1 when obstructed overfocus is apart from adjustment optical element 61,62 is the position of the plane Ga of cover glass G1 It sets.It is preferred that the plate thickness of cover glass G1 is about 0.5mm, focal position F1 is located at the immediate vicinity in the plate thickness direction in plane Ga.

In the case where passing through focal length adjustment optical element 61,62, due to being used up in light to focal length adjustment It learns during the incident process of element 61,62 and light is emitted from focal length adjustment with optical element 61,62, light can occur Refraction, thus focal position F2 be in than focal position F1 far from.If by focal length adjustment optical element 61,62 Plate pressure be set as T, the refractive index of glass is set as n, then because by focal length adjustment with burnt caused by optical element 61,62 The extension (referring to the black arrow in Figure 24) of point position can be indicated by T-T/n.For example, if setting T as 12mm, n 1.5, then by In by focal length adjustment optical element 61,62, thus focal position extends 4mm.That is, focal position F2 is located at It is more leaned on than focal position F1 at the position of the side-z 4mm.

Figure 25 is the figure for the relationship for indicating the position of cover glass G1 between the image that is shot by the 3rd video camera 13, and (A) is The enlarged drawing of the lateral parts of cover glass G1, (B) indicate a part of the image shot by the 3rd video camera 13.At Figure 25 (A) In, reflecting surface 63a is shown with dotted line, is shown and is reflected from reflecting surface 63a and to the incident light of the 3rd video camera 13 with two chain-dotted lines Path.

Region (the region of a part by plane Ga of the side Gb of plane Ga and cover glass G1 about cover glass G1 I), by it as obstructed overfocus apart from adjustment optical element 61,62 ground is directed to pick-up lens 13a.Focal position F1 is in At the position of plane Ga, thus region I picture become clearly as.The picture of side Gb becomes the fuzzy of focus misalignment slightly As (referring to Figure 25 lattice portion).

The region (region II) of a part by side Gb of side Gb and plane Ga picture by reflecting surface 63a (for It is also same for reflecting surface 64a) it reflects and is directed into pick-up lens 13a.Therefore, left and right reversion occurs for the picture of region II, The picture of the end Ge of side Gb becomes inside, and the picture of the side plane Ga of side Gb becomes outside.

In addition, the picture of region II is by being directed into pick-up lens 13a after focal length adjustment optical element 61,62. Due to passing through focal length adjustment optical element 61,62, thus the position of focal position F2 is more on the lower than focal position F1, Therefore for side Gb major part all become focus be aligned clearly as.In the present embodiment, by making the 3rd video camera 13 depth of focus and the height of side Gb are substantially uniform, obtain the clear of focus alignment so as to the entirety for side Gb Picture.In addition, being directed to the boundary part of plane Ga and side Gb, become the fuzzy picture of focus misalignment slightly (referring to Figure 25 Lattice portion).In addition, the bosom side of the picture of region II is the part of no cover glass G1, and shot by the 3rd video camera 13 black Picture.

Region I and region II are preferably set to a part of overlapping.It is directed to the boundary part of plane Ga and side Gb as a result, Focal length adjustment can have been passed through with the image of optical element 61,62 and obstructed overfocus apart from adjustment optical element 61, the two images of 62 image, therefore in the case where the focus alignment of an image, it is also able to detect about plane Ga With the defect of the boundary part of side Gb.

Back to the explanation of Figure 23.Optical detection device 3 has the height acquisition unit 90 for the height for obtaining cover glass G1.It is high Degree acquisition unit 90 is configured to more lean on the upstream side (side-x) of direction of transfer F than side inspection portion 60, mainly includes area source 91, video camera 92, reflecting mirror 93.

Figure 26,27 are the figures for the situation for schematically showing that the height to cover glass G1 is measured, Figure 26 be from transmission The figure of direction F substantially orthogonal direction (being the direction-y here) observation, Figure 27 are observed along direction of transfer F (being here the direction+x) Figure.Two chain-dotted lines of Figure 27 show the path of the light irradiated from area source 91.

Area source 91 and video camera 92 and reflecting mirror 93 are configured to clip equipped section 40.Area source 91 to direction of transfer F substantially orthogonal direction (being here the direction+y) irradiation light.Video camera 92 is incident to be irradiated from area source 91 and passes through cover glass G1 The light reflected afterwards by reflecting mirror 93.It is available that the part of light has been blocked secretly and other by cover glass G1 as a result, in video camera 92 Image as the bright shadow image in part.Therefore, the height of cover glass G1 can accurately be obtained.In addition, reflecting mirror 93 is not Be it is necessary, can also make the light of cover glass G1 is irradiated and passed through from area source 91 and be incident to video camera 92.

The height of the front end Gc and rear end Gd of cover glass G1 are lower than plane Ga.Therefore, it is being transmitted on one side by equipped section 40 Make cover glass G1 mobile on the F of direction, on one side from area source 91 to the direction y irradiation light, and by video camera 92 to having passed through cover glass The light of G1 is shot, and thus, it is possible to obtain the height change of front end Gc and rear end Gd.

Back to the explanation of Figure 23.The movement for moving the 3rd video camera 13 in the up-down direction is set in the 3rd video camera 13 Portion 95.Moving portion 95 includes the actuator (illustration omitted) as driving source and transmits the driving of actuator to make the 3rd video camera 13 mobile mechanisms' (illustration omitted) moved in the up-down direction.It can be various well known using feeding screws etc. to mobile mechanism Technology.

CPU101 (referring to Fig. 7) controls moving portion 95 based on the image taken by video camera 92, with front end Gc and The height change of rear end Gd moves the 3rd video camera 13 in the up-down direction.In ROM103 (referring to Fig. 7), save Following umber of pulse, that is, for after being imaged by video camera 92, until cover glass G1 be located at the 3rd video camera 13 just under Until side, umber of pulse that cover glass G1 is transmitted on direction of transfer F.In addition, saving the drive volume of actuator in ROM103 Relationship between the amount of movement of the 3rd video camera 13.CPU101 drives moving portion 95 based on the information saved in ROM103 Actuator, so that matching with the height change by the cover glass G1 under the 3rd video camera 13 makes the 3rd video camera 13 upper and lower It is moved on direction.

According to the present embodiment, the 3rd video camera 13 is extended with optical element 61,62 by using focal length adjustment Focal length, and the light for being incident to the 3rd video camera 13 is reflected using reflecting mirror 63,64, even to have side Gb's Cover glass G1, the defect that side Gb can be also directed to by once checking are checked.

In addition, according to the present embodiment, by the position, the inclination that change reflecting mirror 63,64 according to the shape of cover glass Degree, so as to cope with various cover glasses.For example, by being set according to side Gb gradient relative to horizontal direction Reflecting surface 63a, 64a gradient relative to horizontal direction are determined, so as to relative to horizontal direction independent of side Gb Check to gradient the defect of side Gb.In addition, for example, the side y by changing reflecting mirror 63,64 according to the width of cover glass To position, the defect of side Gb is checked so as to the width independent of cover glass.

In addition, according to the present embodiment, matchingly making with the height change by the cover glass G1 under the 3rd video camera 13 3rd video camera 13 moves in the up-down direction, thus even if in the case where the height of front end Gc and rear end Gd change, Also can for front end Gc and rear end Gd using 13 focus point of the 3rd video camera be aligned clearly as being shot.Therefore, needle To front end Gc and rear end Gd, defect also can be reliably checked.

In addition, in the present embodiment, the glass of thick plate-like has been used as focal length adjustment optical element 61,62 Plate, but focal length adjustment is not limited to this with the form of optical element 61,62.For example, being used up as focal length adjustment Element 61,62 is learned, concavees lens also can be used.In addition, setting the thickness of glass plate, concavees lens according to the shape of cover glass Shape, but focal length is easy to extend when due to using concavees lens, in the case that in side, the height of Gb is low, preferably Use glass plate as focal length adjustment optical element 61,62.

In addition, in the present embodiment, CPU101 controls moving portion 95 based on the image taken by video camera 92, from And move up the 3rd video camera 13 in above-below direction with the height change by the cover glass G1 under the 3rd video camera 13 It is dynamic, but matchingly make the 3rd video camera 13 in above-below direction with the height change by the cover glass G1 under the 3rd video camera 13 The method of upper movement is not limited to this.For example, can be in advance by information relevant to the height change of front end Gc and rear end Gd It is stored in ROM103, which is based on by CPU101 and controls moving portion 95.In addition, for example, can be surveyed with laser displacement gauge The height for determining cover glass G1 controls moving portion 95 based on the measurement result by CPU101.

In the 1st embodiment of the invention, three-dimensional illumination portion 30 has the 1st region 31, the 2nd region 32 and the 3rd area Domain 33, in the 2nd region 32, the 3rd region 33 by illumination region 30a configuration in substantially barrel surface, but three-dimensional illumination portion Form is not limited to this.

4th embodiment of the invention is that there is the band-like illumination region of whole for constituting three-dimensional illumination portion linear arrangement to shine The form of light-emitting block made of portion 30a.Hereinafter, illustrating optical detection device 4 of the fourth embodiment.In addition, the 4th implements The difference of optical detection device 4 and optical detection device 1 that mode is related to is only that three-dimensional illumination portion, therefore illustrates that the 4th implements The three-dimensional illumination portion 30A that the optical detection device 4 that mode is related to has omits part identical with optical detection device 1 Explanation.

Figure 28 is the perspective view of the summary for the three-dimensional illumination portion 30A for indicating that optical detection device 4 has.Three-dimensional illumination portion 30A is from multiple directions to cover glass G irradiation light.It is irradiated from three-dimensional illumination portion 30A and is incident on the 3rd by the cover glass G light reflected Video camera 13 (referring to Fig.1).

Three-dimensional illumination portion 30A has the 1st region 31A and substantially hemisphere face or substantially semiellipse ball in substantially semicircular cylinder face The 2nd region 32A in face and the 3rd region 33A.The 1st region 31A, the 2nd region 32A and the 3rd area in three-dimensional illumination portion 30A Domain 33A is respectively equivalent to the 1st region 31, the 2nd region 32 and the 3rd region 33 in three-dimensional illumination portion 30.

1st region 31A have band-like illumination region 31a-1,31b-1,31c-1,32d-1,31e-1,31f-1,31g-1, 31h-1,31i-1,31j-1.Band-like illumination region 31a-1~31j-1 in three-dimensional illumination portion 30A is equivalent in three-dimensional illumination portion 30 Band-like illumination region 31a~31j.

2nd region 32A have band-like illumination region 32a-1,32b-1,32c-1,32d-1,32f-1,32g-1,32h-1, the 3rd Region 33A has band-like illumination region 33a-1,33b-1,33c-1,33d-1,33f-1,33g-1,33h-1.Three-dimensional illumination portion 30A In band-like illumination region 32a-1~32d-1,32f-1~32h-1 be equivalent to the band-like illumination region 32a in three-dimensional illumination portion 30~ 32d, 32f~32h.Band-like illumination region 33a-1~33d-1,33f-1~33h-1 in three-dimensional illumination portion 30A are equivalent to three-dimensional photograph Band-like illumination region 33a~33d, 33f~33h in bright portion 30.

In addition, three-dimensional illumination portion 30A has the 1st region 31A, the 2nd region 32A and the 3rd integrated frame of region 33A 34.Frame 34 is formed by the outstanding metal of the thermal conductivity such as aluminium.Frame 34 has two sheet 34a, and the 1st is arranged between two sheet 34a Region 31A.The outside of plate 34a is arranged in 2nd region 32A, the 3rd region 33A.

Figure 29 is the schematic diagram for indicating the details of band-like illumination region 31a-1.Band-like illumination region 31a-1~31j-1 is Identical structure, therefore only illustrate band-like illumination region 31a-1, omit the explanation of band-like illumination region 31b-1~31j-1.

Band-like illumination region 31a-1 is the luminescence component with following part: illumination region 30a is arranged in a column so that long side The length in direction becomes the light-emitting block 30b of L；Cylindrical lens 30c-1；And biconvex lens 30e-1.Cylindrical lens 30c and cylinder The difference of lens 30c-1 is only that the length of longitudinal direction.In addition, the difference of biconvex lens 30e and biconvex lens 30e-1 only exists In the length of longitudinal direction.

There are two the light-emitting block 30b linearly to arrange for band-like illumination region 31a-1 tool.Two light-emitting block 30b are via installation Component 34b is mounted directly on plate 34a.Cylindrical lens 30c-1 is mounted directly on plate 34a via installation component 34c.

Between light-emitting block 30b and cylindrical lens 30c-1, biconvex lens 30e-1 is set.Biconvex lens 30e-1 is via branch Bearing member 30f is installed in light-emitting block 30b.

Light-emitting block 30b and cylindrical lens 30c-1 are installed in plate 34a, so that light-emitting block 30b's is provided with illumination region The upper surface p2 of the front end face p1 and cylindrical lens 30c-1 of 30a are substantially parallel.In other words, the extended direction of light-emitting block 30b It is substantially parallel with the extended direction of cylindrical lens 30c-1.

Figure 30 is the schematic diagram for indicating the details of band-like illumination region 32a-1.Band-like illumination region 32a-1~32d-1, 32f-1~32h-1,33a-1~33d-1 and 33f-1~33h-1 are identical structures, therefore only illustrate band-like illumination region 32a-1 omits band-like illumination region 32b-1~32d-1,32f-1~32h-1,33a-1~33d-1 and 33f-1~33h-1 Explanation.

Band-like illumination region 32a-1 is the luminescence component with following part: illumination region 30a is arranged in a column so that long side The length in direction becomes the light-emitting block 30b of L；Cylindrical lens 30c-2；With plate 30g.Cylindrical lens 30c's and cylindrical lens 30c-2 Difference is only that the length of longitudinal direction.

Light-emitting block 30b and cylindrical lens 30c-2 is installed in plate 30g.Metal shape plate 30g outstanding by thermal conductivity such as aluminium At.The bending part 30h for plate 30g to be mounted on to plate 34a is formed in plate 30g.

Light-emitting block 30b and cylindrical lens 30c-2 are arranged on plate 30g, so that the upper surface p4 phase of cylindrical lens 30c-2 The front end face p3 inclination provided with illumination region 30a for light-emitting block 30b.In other words, the extended side of cylindrical lens 30c-1 To the extended direction inclination relative to light-emitting block 30b.

In addition, band-like illumination region 31a-1~31j-1 has a biconvex lens 30e-1, but band-like illumination region 32a-1~ 32d-1,32f-1~32h-1,33a-1~33d-1 and 33f-1~33h-1 do not have biconvex lens.This is because being formed The dotted light of illumination region 30a can not be photographed simultaneously in the left end of cover glass G and the face P of right end.

Back to the explanation of Figure 28.The position of band-like illumination region 31a-1~31e-1 more leans on the side+x than median plane S1, band-like The position of illumination region 31f-1~31j-1 more leans on the side-x than median plane S1.Band-like illumination region 31a-1~31j-1 is not configured in On the S1 of heart face.

Band-like illumination region 31a-1~31j-1 is configured to that optical axis and median plane S1 and equipped section 40 is made (to save sketch map in Figure 28 Show) intersection, i.e. central axis ax (referring to Figure 31) intersect (being described in detail below).

On the band-like centrally disposed face S1 of illumination region 32a-1,33a-1.Band-like illumination region 32b-1~32d-1,33b-1~ The position of 33d-1 more leans on the side+x than median plane S1, band-like illumination region 32f-1~32h-1,33f-1~33h-1 position compare center Face S1 more leans on the side-x.

Central axis ax1 and equipped section 40 of the central axis of band-like illumination region 32a-1,33a-1 towards three-dimensional illumination portion 30A Intersection point (central point O1, referring to Figure 31).Band-like illumination region 32b-1 is set substantially in parallel with band-like illumination region 32a-1,33a-1 ~32d-1,32f-1~32h-1,33b-1~33d-1 and 33f-1~33h-1.

Figure 31 is the figure illustrated from the path of the three-dimensional illumination portion 30A light irradiated.In Figure 31, showing will with median plane S1 Sketch when three-dimensional illumination portion 30A is cut off, and the path of light is shown with two chain-dotted lines.

Band-like illumination region 31f-1 is configured to intersect optical axis with central axis ax.In band-like illumination region 31f-1, cylinder Lens 30c-1 is arranged between light-emitting block 30b and central axis ax, and it is attached that the light irradiated from illumination region 30a is condensed to central axis ax Closely.In the 1st region 31A, illumination region 30a is substantially horizontally arranged, due to the front end face p1 and cylindrical lens of light-emitting block 30b The upper surface p2 of 30c-1 is substantially parallel, therefore is linked focus by cylindrical lens 30c-1 from the light that light-emitting block 30b irradiates On central axis ax.

The central axis of band-like illumination region 32a-1,33a-1 are towards central point O1.Cylindrical lens 30c-2 is arranged in light-emitting block Between 30b and central point O1 (central axis ax), it will be condensed near central axis ax from the light that illumination region 30a irradiates.

In the 2nd region 32A, the 3rd region 33A, illumination region 30a is not substantially horizontally to arrange, the extension of light-emitting block 30b Setting direction tilts relative to horizontal direction.If assuming the upper surface p4 of the front end face p3 and cylindrical lens 30c-2 of light-emitting block 30b It is substantially parallel, then focus is attached on the line substantially parallel with front end face p3 from the light that illumination region 30a irradiates, rather than will be burnt Point is attached on central axis ax.Therefore, in the 2nd region 32A, the 3rd region 33A, upper surface p4 is made to incline relative to front end face p3 Tiltedly, so that focus is attached on central axis ax from the light that illumination region 30a irradiates.

As a result, in the 2nd region 32A, the 3rd region 33A, the light irradiated from illumination region 30a can pass through cylindrical lens The face P of the left end and right end that are formed in cover glass G is light shone after 30c-2, and the focus of the light is formed in the face P. In addition, in the 2nd region 32A, the 3rd region 33A, to the 1st region 31A can irradiation light range A1 outside region A2 irradiation Light.In this way, the 2nd region 32A, the 3rd region 33A have the function of compensating the 1st region 31A.

According to the present embodiment, three-dimensional illumination portion 30A is able to use from various directions to cover glass G irradiation light.In particular, In the 2nd region 32A, the 3rd region 33A, by tilting upper surface p4 relative to front end face p3, it can make from illumination region 30a The focus of the light of irradiation is registered to the face P of the left end and right end that are formed in cover glass G.In addition, by keeping upper surface p4 opposite It is tilted in front end face p3, so as to compensate the 1st region 31A by the 2nd region 32A, the 3rd region 33A.As a result, it is possible to subtract The number of light-emitting block 30b possessed by few band-like illumination region 31a-1~31j-1.

In addition, according to the present embodiment, due to the frame 34 and plate 30g integration that will be formed by the high material of thermal conductivity Radiating component is constituted, therefore can make to radiate well from the thermal efficiency of the generations such as illumination region 30a.

Further, as shown in figure 28 like that, air supplying part 35 is set preferably near three-dimensional illumination portion 30A.By from Air supplying part 35 sends out wind to three-dimensional illumination portion 30A, can be improved the cooling effect of radiating component (frame 34 and plate 30g).In addition, Due to being extended plate 30g in y-direction, air supplying part 35 is preferably from side (at least one in the direction+y and the direction-y Person) wind of the direction (referring to Figure 28 block arrow) along the extended direction of plate 30g is sent out to three-dimensional illumination portion 30A.In addition, In Figure 28, in three-dimensional illumination portion, the direction-y of 30A is provided with air supplying part 35, but the position of air supplying part 35 is not limited to this.This Outside, an air supplying part 35 is provided in Figure 28, but the number of air supplying part 35 is also not limited to this.

In the 1st embodiment of the invention, coaxial-illuminating portion 20 has the upper of the coaxial-illuminating as the 1st video camera 11 The downside coaxial-illuminating 22 of side coaxial-illuminating 21 and the coaxial-illuminating as the 2nd video camera 12, but the form in coaxial-illuminating portion It is not limited to this.

5th embodiment of the invention is the mode that coaxial-illuminating portion has C-PL filter.Hereinafter, explanation the 5th is implemented The optical detection device 5 that mode is related to.In addition, optical detection device 5 of the fifth embodiment and optical detection device 1 Difference is only that coaxial-illuminating portion, therefore illustrates the coaxial-illuminating portion that optical detection device 5 of the fourth embodiment has 20A omits the explanation of part identical with optical detection device 1.

Figure 32 is the main view for indicating the summary of optical detection device 5 of the fifth embodiment.Coaxial-illuminating portion 20A Include the upside coaxial-illuminating 21 of the coaxial-illuminating as the 1st video camera 11；Under coaxial-illuminating as the 2nd video camera 12 Side coaxial-illuminating 22；And C-PL filter 23a, 23b.The downside of the 1st video camera 11, C-PL is arranged in C-PL filter 23a The upside of the 2nd video camera 12 is arranged in filter 23b.

C-PL filter 23a, 23b are to have polarization plates and to the phase for providing 1/4 λ through light for having penetrated polarization plates respectively The circular polarisation filter of 1/4 λ phase plate of potential difference.Rectilinearly polarized light is transformed into circularly polarized light by 1/4 λ phase plate.C-PL Filter 23a, 23b are arranged respectively to that polarization plates is made to be located at the side semi-reflective mirror 21h, 22h, so that 1/4 λ phase plate is located remotely from half anti- The side of mirror 21h, 22h.Therefore C-PL filter 23a, 23b is it is well known that omit the explanation of details.

C-PL filter 23a, 23b are disposed adjacent with the 1st video camera 11, the 2nd video camera 12 respectively.In addition, C-PL is filtered Device 23a, 23b are respectively arranged to make the plane in the direction substantially orthogonal with thickness direction relative to substantially orthogonal with optical axis oax Direction be slightly inclined.

Sometimes lid glass can be penetrated from a part in the light that light source 21a irradiates and is reflected downward by semi-reflective mirror 21h Glass G and by pick-up lens 12a surface reflection.If the reflected light is incident on the 1st video camera 11, it is likely that by the 1st video camera The center of 11 images taken includes the line of light.C-PL filter 23b make through after cover glass G by pick-up lens 12a The light of surface reflection will not be incident on the 1st video camera 11.Thereby, it is possible to make in the image taken by the 1st video camera 11 Center will not include the line of light.

Similarly, C-PL filter 23a to irradiate from light source 22a and reflected upward by semi-reflective mirror 22h and penetrate The 2nd video camera 12 will not be incident on by the light of pick-up lens 11a surface reflection after cover glass G.Thereby, it is possible to make by the 2nd The center for the image that video camera 12 takes will not include the line of light.

In addition, in the present embodiment, there is C-PL filter 23a, 23b, but C-PL filter 23a is not required 's.

More than, embodiments of the present invention have been described in detail with reference to the attached drawings, but specific structure is not limited to this embodiment, It also include the design alteration etc. for not departing from main scope of the invention.As long as those skilled in the art, it will be able to embodiment party Each element of formula is suitably changed, adds, is converted.For example, it is also possible to be examined to the optics that the embodiment of the 4th, 5 is related to Device 4,5 is looked into, using side inspection portion 60, height acquisition unit 90.In addition, for example, it is also possible to by light of the second embodiment Check device 2 and optical detection device of the fifth embodiment 5 is learned to combine, it can also will be of the fourth embodiment Optical detection device 4 and optical detection device of the fifth embodiment 5 combine.

In addition, in the above-described embodiment, the checked property (check object) of optical detection device 1~5 be cover glass G, G1, but the check object of optical detection device 1~5 is not limited to cover glass.For example, the inspection pair of optical detection device 1~5 The glass of the touch tablet of portable personal computer is used in as can be.

It is so-called " substantially " in addition, in the present invention, and be not only exactly the same situation, but include do not lose it is same Error, the concept of deformation of the degree of property.For example, so-called approximate horizontal, however it is not limited to strictly horizontal situation, but include Such as the concept of the error in or so several years.In addition, for example, not being only to refer to strictly in the case where being showed only as parallel, orthogonal etc. The situation that ground is parallel, orthogonal etc., but include substantially parallel, substantially orthogonal etc. situation.In addition, in the present invention, it is so-called " attached Closely ", the region of certain range (can arbitrarily set) just nearby comprising the position as benchmark is meant.

Symbol description

1,2: optical detection device

10,10A: image pickup part

11: the 1 video cameras

12: the 2 video cameras

13: the 3 video cameras

11a, 12a, 13a: pick-up lens

11b, 12b, 13b: line sensor

The visual field position of 13c: the 3 video camera

20,20A: coaxial-illuminating portion

21,21A: upside coaxial-illuminating

22,22A: downside coaxial-illuminating

21a, 22a: light source

21b, 22b: integrator

21c, 22c: collector lens

21d, 22d: aperture

21e, 22e: collimation lens

21f, 22f: mirror

21g, 22g: Fresnel Lenses

21h, 22h: semi-reflective mirror

23a, 23b:C-PL filter

30,30A: three-dimensional illumination portion

30a: illumination region

30b: light-emitting block

30c, 30c-1,30c-2: cylindrical lens

30d: light-emitting block

30e, 30e-1: biconvex lens

30g: plate

30h: bending part

31,31A: the 1 region

31a~31j, 31a-1~31j-1: band-like illumination region

32,32A: the 2 region

32a~32i, 32a-1~32d-1,32f-1~32h-1: band-like illumination region

33,33A: the 3 region

33a~33i, 33a-1~33d-1,33f-1~33h-1: band-like illumination region

34: frame

34a: plate

34b, 34c: installation component

35: air supplying part

40: equipped section

40a: roller

50: transport unit

60: side inspection portion

61,62: optical element is used in focal length adjustment

63,64: reflecting mirror

63a, 64a: reflecting surface

71: integrated circuit

72: input unit

73: output section

74: power supply unit

75: communication I/F

81: position-detection sensor

82: position-detection sensor

90: height acquisition unit

91: area source

92: video camera

93: reflecting mirror

95: moving portion

100: personal computer

101:CPU

102:RAM

103:ROM

104: input/output interface

105: communication I/F

106: medium I/F

111: input unit

112: output device

113: storage medium

Claims

1. a kind of optical detection device, which is characterized in that have:

Checked property is carried in equipped section in the horizontal direction；

Transport unit moves the checked property for being equipped on the equipped section along direction of transfer；

One-dimensional camera unit, substantially vertical the checked property is shot from top, and be configured to longitudinal direction with The direction of transfer is substantially orthogonal；And

Illumination part has multiple illumination regions to the checked property irradiation light,

The illumination part includes the 1st region in substantially semicircular cylinder face, and central axis, which is located to be used as, includes the one-dimensional camera unit Substantially vertical direction face median plane on；And the 2nd region and the 3rd area of substantially hemisphere face or substantially semiellipse spherical surface Domain is formed in the both ends in the 1st region,

In the 1st region, the illumination region is arranged with multiple edges direction substantially orthogonal with the direction of transfer Band-like illumination region,

The band-like illumination region be arranged near median plane described in the 1st region other than region,

In the 2nd region and the 3rd region, the illumination region is arranged on the median plane.

2. optical detection device according to claim 1, which is characterized in that

The intersection that the band-like illumination region is configured to optical axis and the median plane and the upper surface of the equipped section intersects,

The band-like illumination region has optical axis and the 1st of substantially 8 degree or substantially 17 degree of the median plane angulation Band-like illumination region.

3. optical detection device according to claim 2, which is characterized in that

The optical detection device has: control unit, controls the transport unit with certain speed and transmits the checked property, and The one-dimensional camera unit is driven to shoot with constant interval to image, and same with the shooting of the one-dimensional camera unit Step ground makes the 1st light emitting region in the half region divided by the median plane in the 1st region, institute in the 1st region State the 3rd light emitting region on the median plane described in of the 2nd light emitting region other than the 1st light emitting region, the 2nd region, described 4th light emitting region and the 1st band-like illumination region of 3rd region on the median plane described in are irradiated respectively.

4. optical detection device described in any one of claim 1 to 3, which is characterized in that

The illumination part has configuration in the friendship of the upper surface of the band-like illumination region and the median plane and the equipped section Cylindrical lens between line.

5. optical detection device according to any one of claims 1 to 4, which is characterized in that

The optical detection device has:

The upside or downside of the equipped section is arranged in 1st camera unit；

2nd camera unit clips the equipped section with the 1st camera unit and is arranged on opposite side so that optical axis with it is described The optical axis of 1st camera unit is consistent；

1st coaxial-illuminating irradiates directional light from normal direction to the checked property, and is the coaxial of the 1st camera unit Illumination；And

2nd coaxial-illuminating clips the equipped section with the 1st coaxial-illuminating and is arranged on opposite side, and is the 2nd camera shooting The coaxial-illuminating of unit,

It is irradiated to the 1st camera unit incidence from the 1st coaxial-illuminating and by the light of the checked property positive reflection,

Irradiated to the 2nd camera unit incidence from the 2nd coaxial-illuminating and by the light of the checked property positive reflection and It is irradiated from the 1st coaxial-illuminating and has penetrated the light of the checked property.

6. optical detection device according to claim 5, which is characterized in that

The optical detection device has: the 2nd control unit, controls the transport unit and is examined so that certain speed transmission is described Object, and the 1st camera unit and the 2nd camera unit are driven, so as in a manner of the 1st, the 2nd mode, the 3rd side These three irradiation modes of formula are irradiated the 1st coaxial-illuminating or the 2nd coaxial-illuminating, also, with the 1st side The irradiation of formula matchingly obtains image by the 1st camera unit, and the irradiation with the 2nd mode is matchingly taken the photograph by the described 2nd As unit acquirement image, the irradiation with the 3rd mode matchingly obtains image by the 2nd camera unit, wherein described Under 1st mode, it is irradiated the 1st coaxial-illuminating with the 1st intensity, under the 2nd mode, is made with the 1st intensity 2nd coaxial-illuminating is irradiated, and under the 3rd mode, is irradiated the 1st coaxial-illuminating with the 2nd intensity.

7. optical detection device according to any one of claims 1 to 4, which is characterized in that

The optical detection device has:

2nd camera unit clips the equipped section with the one-dimensional camera unit and is arranged on opposite side so that optical axis with it is described The optical axis of one-dimensional camera unit is consistent；

1st coaxial-illuminating irradiates directional light from normal direction to the checked property, and is the coaxial of the one-dimensional camera unit Illumination；And

The illumination part is arranged between the one-dimensional camera unit and the transport unit,

It is examined from the illumination part or the 1st coaxial-illuminating irradiation and to the one-dimensional camera unit incidence by described The light of object positive reflection,

8. optical detection device according to claim 7, which is characterized in that

The optical detection device has: the 3rd control unit, controls the transport unit and is examined so that certain speed transmission is described Object, and the one-dimensional camera unit and the 2nd camera unit are driven, so as in a manner of the 1st, the 2nd mode, the 3rd These three irradiation modes of mode are irradiated the 1st coaxial-illuminating or the 2nd coaxial-illuminating, also, with the described 1st The irradiation of mode matchingly obtains image by the one-dimensional camera unit, and the irradiation with the 2nd mode is matchingly by the described 2nd Camera unit obtains image, and the irradiation with the 3rd mode matchingly obtains image by the 2nd camera unit, wherein in institute It states under the 1st mode, is irradiated the 1st coaxial-illuminating with the 1st intensity, under the 2nd mode, make the described 2nd coaxial Illumination is irradiated with the 1st intensity, under the 3rd mode, is irradiated the 1st coaxial-illuminating with the 2nd intensity.

9. optical detection device described according to claim 1~any one of 8, which is characterized in that

The illumination part has the light for being disposed adjacent with the illumination region and being diffused to the light irradiated from the illumination region Diffusing panel.

10. optical detection device described according to claim 1~any one of 9, which is characterized in that

The optical detection device has:

Focal length adjustment optical element, is adjusted the focal length of the one-dimensional camera unit；And

Reflecting mirror is disposed adjacent with the equipped section,

The focal length adjustment optical element and the reflecting mirror are arranged on the median plane,

Under vertical view, carries the region on the equipped section of the checked property, carries region positioned at the one-dimensional camera shooting list On the downside of the vertical direction of member,

Under vertical view, the reflecting mirror is arranged on the carrying region on the direction substantially orthogonal with the direction of transfer Outside and the position adjacent with the carrying region,

The reflecting surface of the reflecting mirror is general plane,

It substantially is extended the reflecting surface along the direction of transfer, so that the line phase that the reflecting surface intersects with the median plane Horizontal plane is tilted,

The focal length adjustment is configured to connect with by the one-dimensional camera unit and the reflecting mirror with optical element Line is overlapped.

11. optical detection device according to claim 10, which is characterized in that

The focal length adjustment is glass plate with optical element, and is configured to the both ends of the surface substantially orthogonal with plate thickness direction and is in It is horizontal.

12. optical detection device described according to claim 1~any one of 11, which is characterized in that

The optical detection device has:

Moving portion moves the one-dimensional camera unit in the up-down direction；

Height acquisition unit obtains the height of the checked property；And

Mobile control division controls the moving portion based on the information that the height acquisition unit obtains, and one-dimensional takes the photograph with by described As the height change of the checked property under unit moves the one-dimensional camera unit in the up-down direction.

13. optical detection device according to claim 12, which is characterized in that

The height acquisition unit includes

Area source, to the direction irradiation light substantially orthogonal with the direction of transfer；And

The light of the checked property is irradiated from the area source and has passed through in side camera unit, incidence.

14. optical detection device described according to claim 1~any one of 13, which is characterized in that

The illumination part includes the hair that the illumination region is arranged in a column in the 2nd region and the 3rd region Light block；And the 2nd cylindrical lens passed through from the light that the illumination region irradiates,

In the 2nd region and the 3rd region, the extended direction of the light-emitting block is inclined relative to horizontal direction Tiltedly,

In the 2nd region and the 3rd region, the extended direction of the 2nd cylindrical lens is relative to the hair The extended direction of light block tilts.

15. optical detection device described according to claim 1~any one of 14, which is characterized in that

The illumination part has the radiating component formed by the high material of thermal conductivity,

The illumination region is set to the radiating component.

16. optical detection device according to claim 15, which is characterized in that

Have the air supplying part for sending out wind in the radiating component,

The radiating component has multiple plates provided with the illumination region,

The plate is extended on the direction substantially orthogonal with the direction of transfer,

The air supplying part sends out the wind of the direction along the extended direction of the plate.

17. the optical detection device according to any one of claim 5~8, which is characterized in that

The downside of the equipped section is arranged in 2nd camera unit,

In the upside of the 2nd camera unit, circular polarisation filter is set,

The plane that the circular polarisation filter is configured to the direction substantially orthogonal with thickness direction is imaged relative to the described 2nd The direction that the optical axis of unit is substantially orthogonal is slightly inclined.