CN112179271A - Optical detection device - Google Patents
Optical detection device Download PDFInfo
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- CN112179271A CN112179271A CN202010579966.0A CN202010579966A CN112179271A CN 112179271 A CN112179271 A CN 112179271A CN 202010579966 A CN202010579966 A CN 202010579966A CN 112179271 A CN112179271 A CN 112179271A
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 230000003287 optical effect Effects 0.000 title claims abstract description 47
- 238000007689 inspection Methods 0.000 claims description 23
- 238000000605 extraction Methods 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Abstract
The invention provides an optical detection device, which comprises a positioning module and a detection module and is suitable for detecting a workpiece. The workpiece includes a top surface and a first workpiece side surface. The positioning module comprises a light-transmitting carrying platform, a light source module and a first positioning prism. The light source module is arranged below the light-transmitting carrying platform. The first positioning prism is arranged on the side surface of the first carrying platform on the light-transmitting carrying platform. The first positioning prism comprises a first vertical positioning surface and a first reflecting inclined surface. The first vertical positioning surface is vertical to the light-transmitting carrying platform. The first reflecting inclined plane is adjacent to and not parallel to the vertical positioning surface. The workpiece is placed on the light-transmitting carrying platform. The first workpiece side is adapted to face the first vertical positioning surface. The first reflection inclined plane reflects an image of the side surface of the first workpiece. The detection module is configured on the positioning module. The detection module extracts an image of the top surface of the workpiece on the light-transmitting carrying platform and an image of the reflected side surface.
Description
Technical Field
The present invention relates to a detection device, and more particularly, to an optical detection device.
Background
Generally, in an optical inspection apparatus for inspecting a workpiece, a positioning fixture is additionally disposed to fix the workpiece on a stage of the inspection apparatus when the workpiece is inspected. However, such positioning jig is usually made of metal such as iron or aluminum. Therefore, when positioning or guiding the workpiece, the part of the workpiece is often shielded, so that the optical detection device cannot detect the complete image of the workpiece, and the angle of the workpiece needs to be selected, which is time-consuming.
On the other hand, the current positioning jig needs to be designed for various workpiece shapes and types of optical detection devices. Therefore, if the shape of the workpiece is different or the type of the optical detection device is different, it is necessary to manufacture additional jigs, which is very costly.
Disclosure of Invention
The invention provides an optical detection device which can detect images of the side surface and the top surface of a workpiece so as to enable the detection procedure to be more efficient.
An optical detection device comprises a positioning module and a detection module and is suitable for detecting a workpiece. The workpiece includes a top surface and a first workpiece side surface. The positioning module comprises a light-transmitting carrying platform, a light source module and a first positioning prism. The light source module is arranged below the light-transmitting carrying platform. The first positioning prism is arranged on the side surface of the first carrying platform on the light-transmitting carrying platform. The first positioning prism comprises a first vertical positioning surface and a first reflecting inclined surface. The first vertical positioning surface is vertical to the light-transmitting carrying platform. The first reflecting inclined plane is adjacent to and not parallel to the vertical positioning surface. The workpiece is placed on the light-transmitting carrying platform. The side face of the first workpiece is suitable for facing the first vertical positioning face, and after an image of the side face of the first workpiece enters the first reflection inclined face through the first vertical positioning face, the image of the side face of the first workpiece is upwards reflected by the first reflection inclined face. The detection module is arranged above the positioning module and used for extracting the image of the top surface of the workpiece and the reflected image of the side surface of the first workpiece and detecting the extracted image of the top surface of the workpiece and the reflected image of the side surface of the first workpiece.
In an embodiment of the invention, the workpiece includes a second workpiece side surface perpendicular to the first workpiece side surface, the light-transmitting stage further includes a second stage side surface perpendicular to the first stage side surface, the positioning module further includes a second positioning prism disposed on the second stage side surface of the light-transmitting stage, the second positioning prism includes a second vertical positioning surface and a second reflection inclined surface adjacent to and nonparallel to the second vertical positioning surface, the second workpiece side surface of the workpiece is suitable for being placed on the light-transmitting stage toward the second vertical positioning surface, and the second reflection inclined surface is used for reflecting an image of the second workpiece side surface.
In an embodiment of the invention, the positioning module further includes a plurality of first magnetic attraction members disposed on the light transmission carrier, the positioning module further includes an auxiliary positioning block, the auxiliary positioning block has a second magnetic attraction member, the auxiliary positioning block is selectively disposed on the workpiece, so that the workpiece is interposed between the second magnetic attraction member and at least one of the first magnetic attraction members, and the workpiece is positioned on the light transmission carrier by a magnetic force of the second magnetic attraction member and at least one of the first magnetic attraction members.
In an embodiment of the invention, the positioning module further includes a plurality of first magnetic attraction pieces disposed on the light transmission carrier, and the first positioning prism has a third magnetic attraction piece corresponding to the first magnetic attraction pieces, and the first positioning prism is magnetically attracted to at least one of the first magnetic attraction pieces through the third magnetic attraction piece and detachably fixed on the light transmission carrier.
In an embodiment of the invention, the positioning module further includes a plurality of first magnetic attraction members disposed on the light transmission stage, and the positioning portion includes a fourth magnetic attraction member, and the background member selectively magnetically attracts the fourth magnetic attraction member to at least one of the first magnetic attraction members, so as to detachably fix the background member on the light transmission stage.
In an embodiment of the invention, in the optical inspection device, the first magnetic attraction pieces are arranged in a matrix.
In an embodiment of the invention, the positioning module further includes a locking member, and the locking member is used to fix the first positioning prism on the light-transmitting carrier.
In an embodiment of the invention, the detection module further includes a base, a frame, an image capturing device, and a computer system. The base body is provided with a plurality of rails. The frame body is movably arranged on the rails of the seat body. The image extraction device is fixed on the frame body and moves relative to the seat body. The computer system is coupled to the image extraction device and is used for detecting the extracted image of the top surface of the workpiece and the reflected image of the side surface of the first workpiece.
In an embodiment of the invention, the tracks include a first track extending along a first direction, a second track extending along a second direction, and a third track extending along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.
In an embodiment of the invention, an included angle between the first reflection inclined plane and the first vertical positioning plane of each of the first positioning prisms is 45 degrees.
In view of the above, in the optical detection apparatus of the present invention, the workpiece may be placed on the light-transmitting stage along the vertical positioning surface of the positioning prism. The light emitted by the light source module can be upwards irradiated to the workpiece from the lower part of the light-transmitting carrying platform, and the reflection inclined plane can upwards reflect the image on the side surface of the workpiece. Therefore, the detection module arranged above the positioning module can receive the images of the top surface and the side surface of the workpiece. In other words, the detection module of the present invention can detect the image of the workpiece more comprehensively. Therefore, the optical detection device of the invention has better adaptability and can be suitable for workpieces with various sizes. Moreover, the top surface and the side surface of the workpiece can be detected without additionally moving the workpiece, so that the detection effect is more complete, and the operation is more efficient.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic perspective view of an optical detection apparatus disposed in a detection box according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of the optical detection apparatus of fig. 1.
Fig. 3A is a schematic perspective view of a positioning module of the optical inspection apparatus of fig. 2, in which a workpiece and a background are disposed.
Fig. 3B is a perspective view of the positioning module of fig. 3A from another perspective.
Fig. 3C is a top view schematic diagram of the positioning module of fig. 3A.
Fig. 4A is a schematic diagram of the optical detection apparatus of fig. 1 in which the first positioning prism is disposed on the transparent stage.
Fig. 4B is a schematic diagram of the first positioning prism of fig. 4A at another angle.
Fig. 5 is a schematic view illustrating a first positioning prism disposed on a transparent carrier according to another embodiment of the invention.
The reference numerals are explained below:
10: optical detection device
3: computer system
5: detection box
50: workpiece
52: the top surface
54: side surface of the first workpiece
56: side surface of the second workpiece
100: positioning module
110: light-transmitting carrying platform
112: side surface of the first carrying platform
114: side surface of the second carrying platform
120: light source module
130. 130 a: first positioning prism
132: first vertical positioning surface
134: first reflecting inclined plane
136: third magnetic attraction piece
140: second positioning prism
142: second vertical positioning surface
144: second reflecting inclined plane
150: locking part
160: first magnetic attraction piece
170: auxiliary positioning block
172: second magnetic attraction piece
200: detection module
210: base body
212: first rail
214: second rail
216: third track
220: rack body
230: image pick-up device
300: background part
310: background inclined plane
320: positioning part
322: fourth magnetic attraction piece
D1: a first direction
D2: second direction
D3: third direction
θ: included angle
Detailed Description
Generally, when the workpiece is initially finished, it is necessary to detect whether the structures and features above the workpiece are correct or not by an optical detection device. For example, the optical detection device detects whether the position of the opening of the workpiece is correct. After the correctness is confirmed, the subsequent manufacturing procedure can be carried out. However, in the inspection process, the workpieces need to be fixed by positioning jigs, and the positioning jigs often cover the workpiece, so that the workpieces need to be rotated by a plurality of angles in the inspection process to be completely inspected, which takes a lot of time. In addition, the positioning fixture is usually only suitable for workpieces with specific project sizes and shapes, and the positioning fixture needs to be replaced simultaneously when the workpieces or the projects are replaced. Therefore, the present invention is to improve the optical detection device by making part of the components of the optical detection device transparent.
Fig. 1 is a schematic perspective view of an optical detection apparatus disposed in a detection box according to an embodiment of the present invention. Fig. 2 is a schematic perspective view of the optical detection apparatus of fig. 1. Fig. 3A is a schematic perspective view of a positioning module of the optical inspection apparatus of fig. 2, in which a workpiece and a background are disposed.
It should be noted that, in the embodiment, fig. 1 shows the detection box 5, and the optical detection device 10 is disposed in the detection box 5, the detection box 5 is, for example, a black box, but the invention is not limited to the form of the detection box 5 in other embodiments not shown. The optical detection device 10 is not necessarily disposed in the detection box 5 of the type shown in fig. 1, and may be configured appropriately according to actual needs, and the invention is not limited thereto. In addition, for the sake of clarity of describing the optical detection module 200 of the present embodiment, the following figures have omitted the structure of the detection box 5, and the invention is not limited thereto.
Referring to fig. 1, fig. 2 and fig. 3A, in the present embodiment, the optical inspection apparatus 10 is used for inspecting a workpiece 50 (fig. 3A). The optical detection device 10 includes a positioning module 100 and a detection module 200. Further, the positioning module 100 of the present embodiment includes a light-transmitting carrier 110, a light source module 120, a first positioning prism 130, and a second positioning prism 140. The light source module 120 is disposed under the transparent stage 110.
Fig. 3B is a perspective view of the positioning module of fig. 3A from another perspective. Fig. 3C is a top view schematic diagram of the positioning module of fig. 3A. Fig. 4A is a schematic diagram of the optical detection apparatus of fig. 1 in which the first positioning prism is disposed on the transparent stage. Fig. 4B is a schematic diagram of the first positioning prism of fig. 4A at another angle.
Referring to fig. 3A and 3B, in the present embodiment, the transparent carrier 110 includes a second carrier side 114 perpendicular to the first carrier side 112. The first positioning prism 130 is disposed on the first stage side surface 112 of the light-transmitting stage 110. The second positioning prism 140 is disposed on the second stage side surface 114 of the light-transmitting stage 110.
Referring to fig. 4A and 4B, in the present embodiment, the first positioning prism 130 includes a first vertical positioning surface 132 and a first reflection inclined surface 134 adjacent to and non-parallel to the first vertical positioning surface 132. In detail, the first vertical positioning surface 132 is perpendicular to the light transmissive stage 110, and the first reflective inclined surface 134 faces the first vertical positioning surface 132, for example, so that the first positioning prism 130 is wide at the top and narrow at the bottom.
Referring to fig. 3B, the second positioning prism 140 includes a second vertical positioning surface 142 and a second reflecting inclined surface 144 adjacent to and non-parallel to the second vertical positioning surface 142. The second vertical positioning surface 142 is perpendicular to the light-transmitting carrier 110, and the second reflective inclined surface 144 faces the second vertical positioning surface 142, for example, so that the second positioning prism 140 is wide at the top and narrow at the bottom.
In short, two positioning prisms, such as the first positioning prism 130 and the second positioning prism 140, are disposed on the light-transmitting stage 110 of the positioning module 100 of the present embodiment. The first positioning prism 130 and the second positioning prism 140 have the same structure, but the invention is not limited thereto.
In addition, in the present embodiment, as shown in fig. 4A and 4B, an included angle θ between the first reflection inclined surface 134 of the first positioning prism 130 and the first vertical positioning surface 132, and an included angle between the second reflection inclined surface 144 of the second positioning prism 140 and the second vertical positioning surface 142 are both 45 degrees. Of course, in other embodiments, the included angle θ between the first reflection inclined surface 134 and the first vertical positioning surface 132 and the included angle between the second reflection inclined surface 144 of the second positioning prism 140 and the second vertical positioning surface 142 may have other suitable angles according to practical requirements, for example, the included angle is between 30 degrees and 60 degrees, but the invention is not limited thereto.
Specifically, referring to fig. 3A, 3B and 3C, in the present embodiment, the workpiece 50 includes a top surface 52, a first workpiece side surface 54 and a second workpiece side surface 56 perpendicular to the first workpiece side surface 54. Further, the first workpiece side 54 of the workpiece 50 is adapted to be disposed on the transparent stage 110 facing the first vertical positioning surface 132 of the first positioning prism 130, and the second workpiece side 56 of the workpiece 50 is adapted to be disposed on the transparent stage 110 along the second vertical positioning surface 142 of the second positioning prism 140. Therefore, after the image of the first workpiece side 54 is incident to the first reflective inclined plane 134 through the first vertical positioning plane 132, the first reflective inclined plane 134 reflects the image of the first workpiece side 54 upward; similarly, after the image of the second workpiece side surface 56 is incident on the second reflective inclined surface 144 through the second vertical positioning surface 142, the second reflective inclined surface 144 reflects the image of the second workpiece side surface 56 upward.
Since the first positioning prism 130 is perpendicular to the second positioning prism 140, the intersection point of the extension line of the first positioning prism 130 and the extension line of the second positioning prism 140 is similar to the origin, the first workpiece side surface 54 of the workpiece 50 abuts against the first vertical positioning surface 132 of the first positioning prism 130, and the second workpiece side surface 56 of the workpiece 50 abuts against the second vertical positioning surface 142 of the second positioning prism 140 as a positioning.
It should be noted that, in the embodiment, the bottom of the workpiece 50 is illustrated as a flat plate, for example, and can entirely abut against the transparent carrier 110, but in other embodiments not illustrated, the workpiece 50 can be in various forms and sizes, the invention does not limit the size and shape of the workpiece 50, and the bottom of the workpiece 50 can also partially abut against the transparent carrier 110. In addition, the present invention does not impose a limit on the number of sides of the workpiece. Moreover, the workpieces 50 with different sizes and forms can also be arranged on the positioning prism of the present embodiment or positioning prisms with other shapes, and the size and shape of the positioning prism are not limited in the present invention.
On the other hand, in the present embodiment, although the workpiece 50 can be positioned by only providing two positioning prisms, in other embodiments, more positioning prisms may be used, or even only one positioning prism may be used. That is, in other embodiments, the number of positioning prisms may be determined according to actual requirements (e.g., the number of sides of the workpiece 50 to be inspected), and the invention is not limited thereto. Moreover, the positioning prism may be designed to have an appropriate shape according to actual needs, and is not necessarily arranged on the first stage side surface 112 and the second stage side surface 114, and the shape and position of the positioning prism are not limited in the present invention.
Referring back to fig. 1 and fig. 2, in the present embodiment, the positioning module 100 further includes a plurality of first magnetic attraction pieces 160, and the first magnetic attraction pieces 160 are disposed on the light transmission stage 110. In detail, the first magnetic attraction pieces 160 of the embodiment are disposed between the light-transmitting carrier 110 and the light source module 120, but the invention is not limited thereto. Moreover, the first magnetic members 160 of the present embodiment are optionally arranged in a matrix. Of course, in other embodiments, the first magnetic element 160 can have a suitable arrangement and configuration, and the invention is not limited thereto. It should be noted that the first magnetic attraction member 160 may be embedded inside the transparent carrier 110, and is not limited by the drawings.
Referring back to fig. 3A to fig. 3B, in the present embodiment, the positioning module 100 further includes at least one auxiliary positioning block 170, and the auxiliary positioning block 170 has a second magnetic attraction element 172. Further, the auxiliary positioning block 170 is selectively disposed on the workpiece 50, such that the workpiece 50 is interposed between the second magnetic attraction member 172 and at least one of the first magnetic attraction members 160, and the workpiece 50 is positioned on the transparent carrier 110 together with the first positioning prism 130 and the second positioning prism 140 by the magnetic attraction of the second magnetic attraction member 172 and the magnetic force of at least one of the first magnetic attraction members 160. It should be noted that, in the embodiment, the number of the assistant positioning blocks 170 shown in fig. 5 is two, for example, but the invention does not limit the number of the assistant positioning blocks 170.
Based on this design, in the present embodiment, since the first magnetic attraction pieces 160 are, for example, uniformly distributed on the transparent stage 110, the second magnetic attraction piece 172 of the auxiliary positioning block 170 can fix the workpiece 50 on the transparent stage 110 by magnetically attracting with the first magnetic attraction piece 160. Therefore, the auxiliary positioning block 170 of the present embodiment can be moved to a proper position according to the size of the workpiece 50 to fix the workpiece 50. Thus, the workpiece 50 of any size can be properly fixed on the transparent stage 110.
In addition, referring back to fig. 1 to fig. 2, in the present embodiment, the detecting module 200 further includes a base 210, a frame 220, an image capturing device 230, and a computer system 3. In detail, the base 210 has a plurality of rails, and the rails optionally include a first rail 212 extending along a first direction D1, a second rail 214 extending along a second direction D2, and a third rail 216 extending along a third direction D3. In the present embodiment, the first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. The computer system 3 is coupled to the image capturing device 230 for detecting the captured image of the top surface 52 of the workpiece 50 and the reflected image of the first workpiece side surface 54. It should be noted that, in the embodiment, the computer system 3 is illustrated as an All in One (All in One), but not limited thereto. In other embodiments, not shown, the computer system may be a tablet computer, a desktop computer, a pen-type computer, or other suitable computer system, and the invention is not limited to the computer system.
Of course, in other embodiments, the tracks do not necessarily include the first track 212, the second track 214, and the third track 216, and more or fewer tracks may be provided. In addition, the first rail 212 (the first direction D1), the second rail 214 (the second direction D2), and the third rail 216 (the third direction D3) are not necessarily perpendicular to each other. The present invention does not limit the number and form of the tracks, nor the extending direction of the first track 212, the second track 214, and the third track 216.
Further, in the present embodiment, the frame 220 is movably disposed on the rails of the base 210, and the image capturing device 230 is fixed to the frame 220. That is to say, the frame body 220 of the present embodiment can move along the first rail 212 (the first direction D1), the second rail 214 (the second direction D2) and the third rail 216 (the third direction D3) and drive the image capturing device 230 to move relative to the frame body 210, so as to capture the image of the workpiece 50.
Specifically, the detecting module 200 is disposed on the positioning module 100, since the first reflecting inclined plane 134 of the first positioning prism 130 can reflect the image of the first workpiece side 54 upward, and the second reflecting inclined plane 144 can reflect the image of the second workpiece side 56 upward. The inspection module 200 may extract images of the top surface 52, the first workpiece side surface 54, and the second workpiece side surface 56 of the reflected workpiece 50. In this way, in the present embodiment, the user can simultaneously detect the top surface 52, the first workpiece side surface 54 and the second workpiece side surface 56 of the workpiece 50 through the detection module 200 without moving the workpiece 50.
Based on this design, the positioning module 100 of the present embodiment can be applied to workpieces 50 with different sizes and shapes. Further, the first positioning prism 130 and the second positioning prism 140 may reflect an image of the side surface of the workpiece 50 upward. Thus, it is not necessary to rotate the workpiece 50 at an angle at all times when detecting the workpiece 50. Therefore, the positioning module 100 of the present embodiment has better adaptability, and can save the manufacturing cost of the positioning fixture, reduce the detection time, and increase the efficiency of detecting the workpiece 50. In one embodiment, the optical detection device 10 may further include a light source disposed above the positioning module 100 to provide the required light.
In addition, as shown in fig. 4A, in the present embodiment, the first positioning prism 130 has a third magnetic attraction element 136 corresponding to the first magnetic attraction elements 160. Moreover, the first positioning prism 130 is magnetically attracted to at least one of the first magnetic attraction members 160 through the third magnetic attraction member 136, and is detachably fixed on the transparent carrier 110. Of course, in the present embodiment, the second positioning prism 140 may also be selectively fixed to the transparent carrier 110 in a detachable manner by using a magnetic attraction manner, as with the first positioning prism 130. In this way, the first positioning prism 130 of the present embodiment can be moved to a proper position on the light-transmitting stage 110 to position the workpiece 50 and reflect the side image of the workpiece 50.
Fig. 5 is a schematic diagram of a first positioning prism 130a disposed on a transparent carrier 110 according to another embodiment of the invention. Referring to fig. 5, a main difference between the first positioning prism 130a of the present embodiment and the first positioning prism 130 of the previous embodiment is that the positioning module 100 of the present embodiment further includes a locking member 150 for fixing the first positioning prism 130a on the light-transmitting carrier 110. That is, in the present embodiment, the first positioning prism 130a is locked on the light-transmitting stage 110, which has an advantage of being stable.
It should be noted that, in other embodiments, the first positioning prism 130 can also be fixed on the light-transmitting carrier 110 in other manners, such as adhesion or engagement, and the invention is not limited to the manner in which the first positioning prism 130 is fixed on the light-transmitting carrier 110. On the other hand, in other embodiments, for example, the first positioning prism 130 can be detachably fixed on the light-transmitting stage 110 by a magnetic attraction method, and the second positioning prism 140 can be fixed on the light-transmitting stage 110 by a locking method. Of course, in other embodiments, if more positioning prisms are used, the positioning prisms may also be fixed in a suitable manner, and the invention is not limited thereto.
In addition, referring back to fig. 3A to 3C, in the present embodiment, the cross-sectional shape of the workpiece 50 is, for example, U-shaped, that is, the height of the two sides close to the first positioning prism 130 and the height of the two sides far away from the first positioning prism 130 are larger, and the height of the center is smaller. When the first workpiece side 54 of the workpiece 50 (i.e., the side closer to the first positioning prism 130) is to be measured, the detection of the first workpiece side 54 of the workpiece 50 is prevented from being affected in order to avoid that the image of the portion of the workpiece 50 on the side farther from the first positioning prism 130 is reflected upward by the first reflection slope 134 together with the image of the first workpiece side 54. Or/and to more clearly present an image of first workpiece side 54 of workpiece 50. The optical inspection apparatus 10 further includes a background member 300 movably disposed on the transparent carrier 110 or the workpiece 50.
In the present embodiment, the background component 300 includes a background inclined plane 310 and a positioning portion 320. In detail, the background inclined plane 310 faces the corresponding reflection inclined plane, in the embodiment, for example, the second reflection inclined plane 144 is provided, but not limited thereto, for example, in other embodiments, the background inclined plane 310 may also face the first reflection inclined plane 134. The positioning portion 320 includes a fourth magnetic element 322, and the background element 300 selectively magnetically attracts the fourth magnetic element 322 to at least one of the first magnetic elements 160, so as to detachably fix the background element 300 on the light-transmitting carrier 110.
Specifically, in the present embodiment, the background element 300 is disposed on the workpiece 50 and is interposed between two sides of the workpiece 50 close to the first positioning prism 130 and far away from the first positioning prism 130. The background element 300 is disposed opposite to the first positioning prism 130 or the second positioning prism 140, and the background inclined plane 310 of the background element 300 faces the first positioning prism 130 or the second positioning prism 140. Based on this design, the background inclined plane 310 can be used as the background of the image of the side surface of the workpiece reflected by the reflection inclined plane of the corresponding positioning prism, so that the image extraction device 230 can extract the image of the side surface 54/56 of the workpiece reflected by the reflection inclined plane 134/144 more clearly without being interfered by other images.
For example, if the color of the workpiece 50 of the present embodiment is black, only different color paper, such as white paper, is adhered to the background inclined plane 310 of the background element 300. At this time, the image of the workpiece side 54/56 reflected by the corresponding reflection slope 134/144 shows an image with a white background, and the details of the image of the side of the black workpiece 50 are more clearly shown by the color (white) contrasting with the color (black) of the workpiece 50. In addition, the background 300 can block the image behind the background to prevent the image independent of the workpiece 50 from being reflected by the reflective slope to cause an error in determining the image.
Of course, in other embodiments, the color of the background element 300 may be configured appropriately according to the color of the workpiece 50, and the invention is not limited to the color of the background element 300 and the workpiece 50. In other embodiments, the color of the background element 300 does not need to be changed by attaching paper with different colors to the background element 300, as long as the color of the background element 300 can be changed, which is not limited by the invention.
It should be noted that the background element 300 illustrated in fig. 3A to 3C is disposed on the workpiece 50, that is, the workpiece 50 is located between the background element 300 and the transparent carrier 110, and the background element 300 is detachably fixed on the workpiece 50 by utilizing the magnetic attraction between the fourth magnetic attraction 322 and at least one of the first magnetic attraction 160. Of course, in another embodiment, not shown, the background element 300 is detachably fixed on the transparent carrier 110 beside the workpiece 50 and abuts against the workpiece 50. Thus, the background 300 also has the function of positioning the workpiece 50, and the invention is not limited thereto. In one embodiment, the optical detection apparatus 10 having the background 300 can also omit the auxiliary positioning member 170 and use the background 300 for positioning.
In summary, in the optical inspection apparatus of the present invention, the workpiece can be placed on the transparent stage along the vertical positioning surface of the positioning prism. The light emitted by the light source module can be upwards irradiated to the workpiece from the lower part of the light-transmitting carrying platform, and the reflection inclined plane can upwards reflect the image on the side surface of the workpiece. Therefore, the detection module arranged above the positioning module can extract images of the top surface and the side surface of the workpiece. In other words, the detection module of the present invention can extract the image of the workpiece more comprehensively. Therefore, the optical detection device of the invention has better adaptability and can be suitable for workpieces with various sizes. In addition, the top surface and the side surface of the workpiece can be extracted without additionally moving the workpiece, so that the detection effect is more complete, and the operation is more efficient. Therefore, in one complete detection process, the information of the top surface and the side surface can be fed back to the user at the same time without disassembling the process and customizing a positioning fixture additionally.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An optical inspection apparatus adapted to inspect a workpiece, the workpiece including a top surface and a first workpiece side surface, the optical inspection apparatus comprising:
a positioning module, comprising:
a light-transmitting carrying platform, which comprises a first carrying platform side surface;
a light source module configured below the light-transmitting carrying platform; and
the first positioning prism is arranged on the first carrier side surface of the light-transmitting carrier, the first positioning prism comprises a first vertical positioning surface vertical to the light-transmitting carrier and a first reflection inclined surface which is adjacent to and non-parallel to the first vertical positioning surface, the workpiece is placed on the light-transmitting carrier, the first workpiece side surface is suitable for facing the first vertical positioning surface, and the image of the first workpiece side surface is incident to the first reflection inclined surface through the first vertical positioning surface and then upwards reflects the image of the first workpiece side surface through the first reflection inclined surface; and
the detection module is configured above the positioning module and used for extracting the image of the top surface of the workpiece and the reflected image of the side surface of the first workpiece and detecting the extracted images of the top surface of the workpiece and the reflected image of the side surface of the first workpiece.
2. The optical inspection device of claim 1, wherein the workpiece includes a second workpiece side perpendicular to the first workpiece side, the transparent stage further includes a second stage side perpendicular to the first stage side, the positioning module further includes a second positioning prism disposed on the second stage side of the transparent stage, the second positioning prism includes a second vertical positioning surface and a second reflective bevel surface adjacent to and non-parallel to the second vertical positioning surface, the second workpiece side of the workpiece is adapted to be placed on the transparent stage toward the second vertical positioning surface, the second reflective bevel surface is configured to reflect an image of the second workpiece side.
3. The optical inspection device of claim 1, wherein the positioning module further comprises a plurality of first magnetic attraction elements disposed on the transparent stage, and an auxiliary positioning block having a second magnetic attraction element is disposed on the workpiece, such that the workpiece is interposed between the second magnetic attraction element and at least one of the first magnetic attraction elements, and the workpiece is positioned on the transparent stage by the magnetic force of the second magnetic attraction element and at least one of the first magnetic attraction elements.
4. The optical inspection device of claim 1, wherein the positioning module further comprises a plurality of first magnetic attraction members disposed on the transparent stage, and the first positioning prism has a third magnetic attraction member corresponding to the plurality of first magnetic attraction members, and the first positioning prism is magnetically attracted to at least one of the first magnetic attraction members through the third magnetic attraction member and detachably fixed on the transparent stage.
5. The optical inspection device of claim 1, further comprising a background component disposed on the transparent stage or the workpiece, wherein the background component includes a background slope facing the first reflective slope and a positioning portion, the positioning module further includes a plurality of first magnetic attraction components disposed on the transparent stage, and the positioning portion includes a fourth magnetic attraction component, and the background component selectively magnetically attracts at least one of the first magnetic attraction components to the fourth magnetic attraction component, so as to detachably fix the background component on the transparent stage.
6. The optical inspection device of claim 4 or 5, wherein the plurality of first magnetic attraction members are arranged in a matrix.
7. The optical inspection device of claim 1, wherein the positioning module further comprises a locking member for fixing the first positioning prism to the transparent carrier.
8. The optical inspection device of claim 1, wherein the inspection module further comprises:
a base body with a plurality of tracks;
the frame body is movably arranged on the plurality of tracks of the seat body;
the image extraction device is fixed on the frame body and moves relative to the seat body; and
and the computer system is coupled with the image extraction device and used for detecting the extracted image of the top surface of the workpiece and the reflected image of the side surface of the first workpiece.
9. The optical inspection device of claim 8, wherein the plurality of tracks includes a first track extending along a first direction, a second track extending along a second direction, and a third track extending along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.
10. The optical inspection device of claim 1 wherein the first reflective bevel of each first positioning prism is at an angle of 45 degrees to the first vertical positioning surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108123608A TWI702384B (en) | 2019-07-04 | 2019-07-04 | Optical derection device |
| TW108123608 | 2019-07-04 |
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| CN112179271A true CN112179271A (en) | 2021-01-05 |
| CN112179271B CN112179271B (en) | 2023-03-14 |
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Also Published As
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| TW202102836A (en) | 2021-01-16 |
| TWI702384B (en) | 2020-08-21 |
| CN112179271B (en) | 2023-03-14 |
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