TWM527556U - Image capturing device of an object outer surface - Google Patents

Description

Image capturing device for outer surface of object

The present invention relates to an image capturing device for an outer surface of an object, in particular, an image capturing device for an outer surface of an object by combining two mutually symmetric light sources with a mirror group.

At present, if you want to use the glass disk image screening machine to view the rods, such as screws and screws, wait for the object to be bent. You must use two or more imaging systems (EX: CCD, CMOS) to shoot different angles for the same object. In order to check whether it has a curved 瑕疵, however, the two imaging systems will occupy the space of the machine, and the cost is high, which reduces the customer's willingness to purchase.

In the prior art, for example, the Republic of China Patent No. M461051 discloses a detecting device for the outer surface of an object for detecting an outer surface of an object, and comprising a housing, a first light source unit, an image capturing unit and a mirror. Unit, and a scatter compensation unit. The housing includes an interior space having a detection area and a first housing. The first housing includes an inlet and an outlet. The scatter compensation unit includes a first scatter compensator that compensates for light that cannot be scattered to the detection region at the entrance, and a second scatter compensator that compensates for light that cannot be scattered to the detection region at the exit. Through the aforementioned innovative structure The image quality and image capturing quality of the object can be improved, and false positives can be avoided and the detection accuracy can be improved.

However, in the art, the mirror unit utilizes six mirror bodies, which are reflected three times due to the reflection path, thereby causing the reflection imaging quality to be degraded, and the scattering compensation unit must be used to scatter light to the detection area as compensation to enhance The image quality of the outer surface of the object avoids misjudgment detection accuracy

The object of the present invention is to provide an image capturing device for the outer surface of an object, which is mainly used to illuminate an object to be tested between two light sources by two light sources, preferably two mutually symmetric light sources, and then use four relative symmetry. The mirror body reflects the projected image illuminated by the light source to the imaging unit, thereby avoiding multiple reflections and causing degradation of image quality, and reducing cost.

The image capturing device for the outer surface of the object is used for capturing a surface image of an object, comprising: a first imaging module comprising: a first light source for emitting a first light beam; and a first reflecting mirror for receiving The first light beam reflects the first light beam at a first clamping angle with the vertical surface; the second mirror is disposed at a distance from a side of the first mirror for receiving by the first mirror The first light beam is reflected, and the first light beam is reflected to an imaging unit; the second imaging module is symmetrically disposed to the first imaging module, and includes: a second light source for emitting the second light beam; a third mirror for receiving the second beam and reflecting the second beam at a second angle between the vertical surface; and a fourth mirror for receiving the second reflected by the third mirror Beam and reflecting the second beam to the imaging unit; wherein The object is disposed between the first light source, the second light source, the first mirror and the third mirror, and the first light beam emitted by the first light source is directed to a side surface of the object, so that the side a surface image is projected onto the first mirror, the first mirror reflects the side surface image to the second mirror, and the second mirror reflects the side surface image to the imaging unit, the second light source emits the The second light beam is directed toward the other side surface of the object, the other side surface image is projected to the third mirror, and the third mirror reflects the other side surface image to the fourth mirror, the fourth The mirror reflects the other side surface image to the imaging unit.

1‧‧‧A device for capturing the outer surface of an object

10‧‧‧ objects

20‧‧‧First Imaging Module

21‧‧‧First light source

22‧‧‧First beam

23‧‧‧First mirror

24‧‧‧second mirror

30‧‧‧Second imaging module

31‧‧‧second light source

32‧‧‧second beam

33‧‧‧ third mirror

34‧‧‧fourth mirror

40‧‧‧Top corner

41‧‧‧ isosceles triangle

60‧‧‧ imaging unit

70‧‧‧Sensor unit

75‧‧‧Control unit

101‧‧‧ side surface

102‧‧‧The other side surface

θ 1‧‧‧first clamping angle

θ 2‧‧‧second angle

D‧‧‧Distance

L‧‧‧Vertical

1 is a schematic view of a first imaging module of an image taking device according to an outer surface of an object according to the present invention.

2 is a schematic view of a second imaging module of an image taking device according to an outer surface of an object according to the present invention.

Figure 3 is a system block diagram of an image taking device for an outer surface of an object according to the present invention.

Figure 4 is a schematic illustration of the adjustable distance D of the image taking device of the outer surface of an object according to the present invention.

Fig. 5 is a schematic view showing the adjustable light source and the angle of the mirror of the image capturing device of the outer surface of the object according to the present invention.

Figure 6 is a schematic illustration of the dimensional measurement of an image taking device on the outer surface of an object according to the present invention.

In order to make the above and other objects, features, and advantages of the present invention more apparent, the following description will be described in detail with reference to the accompanying drawings. Referring to Figure 1, Figure 1 is an image of the outer surface of an object according to the present invention. FIG. 2 is a schematic view of a second imaging module of an image taking device according to an outer surface of an object according to the present invention. The image capturing device 1 for the outer surface of the object is used for capturing the surface image of the object 10. The first imaging module 20 includes a first light source 21 for emitting the first image. a light beam 22; a first mirror 23 for receiving the first light beam 22 and reflecting the first light beam 22 at a first clamping angle θ 1 between the vertical plane L; and a second mirror 24 disposed at a distance D One side of the first mirror 23 receives the first light beam 22 reflected by the first mirror 23 and reflects the first light beam 22 to the imaging unit 60. In addition, the second imaging module 30 Preferably, the position and the component are symmetric with respect to the first imaging module 20, including: the second light source 31 is disposed corresponding to the first light source 21 for emitting the second light beam 32; and the third mirror 33 is correspondingly positioned a first mirror 23 for receiving the second beam 32 and reflecting the second beam 32 at a second clamping angle θ 2 between the vertical plane L; and a fourth mirror 34 for receiving the third reflection The second beam 32 is reflected by the mirror 33 and reflects the second beam 32 to the imaging unit 60.

As described above, when the image of the object 10 is to be captured, the object 10 is disposed between the first light source 21, the second light source 31, the first mirror 23, and the third mirror 33, and the first light source 21 emits the first A light beam 22 is incident on one side surface 101 of the object 10, and the side surface 101 image is projected onto the first mirror 23, the first mirror The side surface 101 of the reflective object 10 is imaged to the second mirror 24, and the second mirror 24 reflects the side surface image of the object 10 to the imaging unit 60, and the second imaging module 30 operates in the same manner as the first imaging module. 20, in FIG. 2, the second light beam 32 emitted by the second light source 31 is directed toward the other side surface 102 of the object, and the other side surface 102 image is projected onto the third mirror 33, and the third mirror 33 The other side surface 102 image is reflected to the fourth mirror 34, and the fourth mirror 34 reflects the other side surface image to the imaging unit 60.

The image of one side of the object (such as a screw, a screw) and the image detection of the other side can effectively analyze whether the object has a curved defect. That is to say, if the screw is used as the object to be tested, when the screw is bent, the front or the back of the screw illuminated by the light source cannot project whether the object is bent or not, and the side of the screw (the curved side) must be illuminated to project the screw to bend. The image is thus illuminated by the two light sources at different positions at the same time. Preferably, the two light beams of the two light sources are in a vertical state, thereby simultaneously projecting the front and side images of the object, thereby effectively determining whether the screw has a bending phenomenon.

As described above, the distance D can be changed by adjusting the positions of the first mirror 23 and the third mirror 33.

As described above, wherein the first clamping angle θ 1 and the second clamping angle θ 2 are respectively adjusted according to the illumination angles of the first and second light beams 22 and 32, when the first and second light beams 22 and 32 are vertical, The first clamping angle θ 1 and the second clamping angle θ 2 may be 22.5 degrees.

As described above, the second mirror 24 and the fourth mirror 34 are respectively two reflective surfaces of a triangular ridge 41, preferably isosceles of an isosceles triangle The two reflecting surfaces of the side. The apex angle 40 of the isosceles triangle is 90 degrees.

Next, referring to FIG. 3 to FIG. 5, FIG. 3 is a system block diagram of an image capturing device for an outer surface of an object according to the present invention, and FIG. 4 is an adjustable distance D of an image capturing device for an outer surface of the object according to the present invention. FIG. 5 is a schematic diagram of an adjustable light source and a mirror angle of an image taking device according to an outer surface of an object according to the present invention. The image capturing device 1 of the outer surface of the object further includes a control unit 75 for controlling the angle and position of the first light source 21 and the second light source 31, and controlling the first clamping angle θ 1 and the second reflection of the first mirror 23 The second clamping angle θ 2 of the mirror 33.

The control unit 75 can further control the magnitude of the distance D to adjust the positions of the first mirror 23 and the third mirror 33.

As described above, the image capturing device 1 of the outer surface of the object may be an automatic control system, and the image capturing device 1 of the outer surface of the object further includes a sensing unit 70, and the sensing unit 70 is electrically connected to the control unit 75. The measuring unit 70 is configured to sense the size of the object 10 and transmit the sensing result to the control unit 75. When the control unit 75 receives the sensing result, the first light source 21 is controlled according to the size of the object 10 and The second light source 31 irradiates an angle and a position, and an angle between the first clamping angle θ 1 and the second clamping angle θ 2 and a magnitude of the distance D to adjust the positions of the first mirror 23 and the third mirror 33. Therefore, the sensing unit and the control unit can effectively improve the operation efficiency and the measurement accuracy, and avoid the measurement error caused by the artificial adjustment.

In addition, the present invention can be further used to measure the size of the object, please Referring to Figure 6, Figure 6 is a schematic illustration of the dimensional measurement of the image taking device on the outer surface of an object according to the present invention. In addition to being used to determine whether the object has a curved ridge, the present invention can also adjust the angles of the first light source 21 and the second light source 31, the first mirror 23 and the third mirror 33 relative to the ends of the object to be tested, The length of the long object (for example, screw, screw) is measured by the following method: first, the correction block is placed horizontally on the position to be tested, and then the first light source 21 and the second light source 31 are respectively used to illuminate the two ends of the correction block. At this time, the imaging unit 60 will present the two-end image of the correction block, and then the correction block image is recorded by the imaging unit 60. Then, after the correction block is taken out, the same position is placed on the object to be tested, and the first light source 21 is used according to the above process. And the second light source 31 respectively illuminates the two ends of the object to be tested, and the imaging unit 60 presents the image of the object to be tested at the second end, and compares the corrected block image with the image of the object to be tested, and can determine whether the length of the object to be tested conforms to the client. The required tolerances are judged to be good or defective.

The object of the present invention is to provide an image capturing device for the outer surface of an object, which is mainly used to illuminate an object to be tested between two light sources by two mutually symmetrical light sources, and then reflect the light source by four symmetrical mirror bodies. The projected image is irradiated to the imaging unit, thereby avoiding multiple reflections and causing degradation of imaging quality, and a plurality of image capturing systems can simultaneously view images of different angles of an object, and at the same time, the scattering compensation unit can be eliminated to reduce the cost. And save machine space.

In summary, only the implementation or embodiment of the technical means used to solve the problem is described, and is not intended to limit the creation. The scope of patent implementation. Any change or modification that is consistent with the scope of the patent application scope of this creation or the scope of the patent creation is covered by the scope of the creation patent.

1‧‧‧A device for capturing the outer surface of an object

10‧‧‧ objects

20‧‧‧First Imaging Module

21‧‧‧First light source

22‧‧‧First beam

23‧‧‧First mirror

24‧‧‧second mirror

40‧‧‧Top corner

41‧‧‧ isosceles triangle

60‧‧‧ imaging unit

101‧‧‧ side surface

θ 1‧‧‧first clamping angle

θ 2‧‧‧second angle

D‧‧‧Distance

L‧‧‧Vertical

Claims (10)

An image capturing device for capturing an outer surface of an object, comprising: a first imaging module, comprising: a first light source for emitting a first light beam; and a first reflecting mirror Receiving the first light beam and reflecting the first light beam at a first clamping angle between the vertical surface; a second mirror disposed at a distance from a side of the first mirror for receiving The first light beam reflected by the first mirror and reflected by the first light beam to an imaging unit; a second imaging module comprising: a second light source for emitting a second light beam; a third reflection a mirror for receiving the second light beam and reflecting the second light beam at a second clamping angle between the vertical surface; a fourth mirror for receiving the second light beam reflected by the third mirror And reflecting the second light beam to the imaging unit; wherein the object is disposed between the first light source, the second light source, the first mirror, and the third mirror, the first light source emits the The first light beam illuminates a side surface of the object such that the side surface Projecting to the first mirror, the first mirror reflects the side surface image to the second mirror, the second mirror reflects the side surface image to the imaging unit, and the second light source emits the first The two beams illuminate the other side surface of the object such that The other side surface image is projected to the third mirror, the third mirror reflects the other side surface image to the fourth mirror, and the fourth mirror reflects the other side surface image to the imaging unit. An image capturing device for an outer surface of an object according to claim 1, wherein the first imaging module is symmetrical with the second imaging module. An image capturing device for an outer surface of an object according to claim 1, wherein the distance is changed by adjusting the position of the first mirror or the third mirror. An image capturing device for an outer surface of an object according to claim 1, wherein the second reflecting mirror and the fourth reflecting mirror are respectively a triangular reflecting surface. An image capturing device for an outer surface of an object according to claim 3, comprising a control unit for controlling the angle of illumination of the first light source and the second light source. An image capturing device for an outer surface of an object according to claim 3, comprising a control unit for controlling the angle of the first clamping angle and the second clamping angle. An image capturing device for an outer surface of an object according to claim 3, comprising a control unit for controlling the positions of the first mirror and the third mirror to change the distance. An image capturing device for an outer surface of an object according to claim 5, further comprising a sensing unit electrically connected to the control unit, wherein the sensing unit is used for Sensing a size of the object, the control unit controls the illumination angle of the first light source and the second light source according to the object size. An image capturing device for an outer surface of an object according to claim 6, further comprising a sensing unit electrically connected to the control unit, wherein the sensing unit is configured to sense a size of the object, the control The unit controls the angle of the first clamping angle and the second clamping angle according to the object size. The image capturing device of the outer surface of the object of claim 7, further comprising a sensing unit electrically connected to the control unit, wherein the sensing unit is configured to sense a size of the object, the control The unit controls the size of the distance based on the size of the object.