TWI582549B - An optical positioning device for performing bidirectional imaging with a single image pickup device - Google Patents

Description

Optical positioning device for performing bidirectional imaging with a single camera device

The invention relates to an optical positioning device, in particular to a structural design for performing bidirectional image taking on an upper plate and a lower plate member by using a single imaging device.

In many industrial fields, photography devices are often used for image capture and positioning. Due to the limited optical path acquisition of the photographic device, it is generally only possible to perform image acquisition of a particular location range with a single photographic device. If the photographic device is used for identification positioning of optical points, only a single optical point can be identified and positioned. In order to perform optical image recognition and positioning of the upper and lower plates, it is necessary to configure two photographic devices to achieve the intended purpose.

For example, the photographic method is applied to a circuit board printing machine as an optical point image positioning application. Generally, a method of applying solder on a circuit board is mostly a stencil printing method, and when the circuit board is to be printed, a one-bit device is required. The circuit board is positioned on the printing device for printing, and the conventional alignment device is provided by two or more cameras in the respective positioning modules and is aligned by manual visual or automatic alignment.

Conventional alignment devices have the following disadvantages: (1) At least two cameras must be provided to increase the cost of the alignment device and to adapt to a specific specification of the implement. (2) The X and Y axes are adjusted and positioned by manual visual inspection. This operation is time consuming and has a large error, resulting in a decrease in product yield. (3) The alignment device needs to be manually moved to the plane of the board to be printed. Therefore, how to solve the above-mentioned shortcomings of the prior art is the subject of research and development that is relevant to those involved in this industry.

Therefore, in view of the absence of the conventional alignment device, the main purpose of the present invention is It is an optical positioning device that performs bidirectional imaging with a single imaging device, and the conventional alignment device has the disadvantage of having to take images, recognize and locate two target objects by two separate imaging devices.

A secondary object of the present invention is to perform an optical positioning device that performs bidirectional imaging with a single imaging device, and uses an imaging device to automatically adjust the X and Y axes to position to reduce the number of imaging devices to increase productivity. Product yield and thus user cost.

To achieve the above objective, the present invention is directed to an optical positioning device for performing bidirectional imaging by a single imaging device, which is mainly composed of an imaging device, a light receiving unit, a first image capturing unit and a second image capturing unit. The light-receiving unit is located between the first image capturing unit and the second image capturing unit, and includes a total reflection mirror and a light-receiving half mirror, and the light-receiving half mirror has a light-receiving angle corresponding to The camera device. The first image capturing unit is located between the upper plate and the light receiving unit, and has a first light source generating unit and a first half mirror. The second image capturing unit is located between the lower plate member and the light receiving half mirror, and has a second light source generating unit and a second half mirror. The two-way image taking is performed by the single camera device to the upper and lower plates.

In the embodiment of the present invention, the first image capturing unit includes a first light source generating unit and a first half mirror. The second image capturing unit includes a second light source generating unit and a second half mirror. Furthermore, the first image capturing unit is further provided with a first diffusion member, and the second image capturing unit is further provided with a second diffusion member.

When the invention is applied, it is disposed between an upper plate member and a lower plate member, and a first optical point of the upper plate member and a second optical point of the lower plate member are imaged and positioned.

The specific techniques used in the present invention will be further illustrated by the following examples and the accompanying drawings.

100‧‧‧Optical positioning device

1‧‧‧Upper board

11‧‧‧First optical point

2‧‧‧ Lower board

21‧‧‧second optical point

31‧‧‧ camera

32‧‧‧Lighting unit

321‧‧‧ total reflection mirror

322‧‧‧Lighting half mirror

33‧‧‧First image capture unit

331‧‧‧first projection end

332‧‧‧First light receiving end

333‧‧‧First light source generating unit

334‧‧‧first half mirror

335‧‧‧First diffuser

34‧‧‧Second image taking unit

341‧‧‧second projection end

342‧‧‧second light receiving end

343‧‧‧Second light source generating unit

344‧‧‧second half mirror

345‧‧‧Second diffusion parts

6‧‧‧Printing device

61‧‧‧Upper plate bearing

62‧‧‧ Lower plate bearing

63‧‧‧ alignment device

64‧‧‧Upper displacement mechanism

65‧‧‧ Lower displacement mechanism

L1‧‧‧ first light source

L2‧‧‧ first reflected light

L3‧‧‧ first imaging

M1‧‧‧ second light source

M2‧‧‧second reflected light

M3‧‧‧second imaging

θ‧‧‧Lighting reflection angle

Θ1‧‧‧first image angle

Θ2‧‧‧second image angle

X‧‧‧X axial

Y‧‧‧Y axial

Z‧‧‧Z axial

Fig. 1 is a view showing the optical positioning device for performing bidirectional imaging with a single imaging device of the present invention.

Figure 2 is a schematic view showing one of the images taken by the present invention.

Figure 3 is a schematic view showing another embodiment of the present invention.

Figure 4 is a front elevational view showing the application of the present invention to a circuit board printing apparatus.

Figure 5 is a side view showing the application of the present invention to a circuit board printing apparatus.

Figure 6 is a view showing the application of the present invention to a circuit board printing apparatus.

Referring to FIG. 1 to FIG. 3, the optical positioning device 100 for performing bidirectional imaging with a single imaging device is disposed between an upper plate member 1 and a lower plate member 2 for the upper plate member 1. A first optical point 11 is imaged and positioned by a second optical point 21 of the lower plate member 2. The optical positioning device for performing bidirectional imaging by a single imaging device includes an imaging device 31, a light receiving unit 32, a first image capturing unit 33, and a second image capturing unit 34.

The imaging device 31 is located between the upper plate member 1 and the lower plate member 2, and faces between the first image capturing unit 33 and the second image capturing unit 34.

The light-receiving unit 32 is located between the first image capturing unit and the second image capturing unit. The light-receiving unit 32 has a total reflection mirror 321 and a light-receiving half mirror 322. The imaging device 31 provides a light source for reflection to the imaging device 31.

The light-receiving half mirror 322 of the light-receiving unit 32 is located between the total reflection mirror 321 and the imaging device 31, and corresponds to the imaging device with a light-receiving reflection angle.

The light-receiving half mirror 322 is located between the total reflection mirror 321 and the image pickup device 31, and corresponds to the image pickup device 31 with a light-receiving reflection angle θ.

The first image capturing unit 33 is located between the upper plate member 1 and the light receiving half mirror 322, and has a first projection end 331 and a first light receiving end 332. The first image capturing unit 33 includes a first light source generating unit 333 and a first half mirror 334, and the first light source generating unit 333 can generate a first light source L1. The first half mirror 334 is located between the first projection end 331 and the first light receiving end 332, and corresponds to the first light source L1 by a first imaging angle θ1.

The first image capturing unit 33 is further disposed with a first diffusing member 335. The first diffusing member 335 is coupled between the first light source generating unit 333 and the first half mirror 334 for diffusing the first light source. The first light source L1 is generated by the unit 333.

The second image capturing unit 34 is located between the lower plate member 2 and the light receiving half mirror 322, and has a second projection end 341 and a second light receiving end 342. The second image capturing unit 34 includes a second light source generating unit 343 for generating a second light source M1 and a second half mirror 344 between the second projection end 341 and the second light receiving end 342. And corresponding to the second light source M1 with a second image capturing angle θ2.

The second image capturing unit 34 is further disposed with a second diffusing member 345, and the second diffusing member 345 is located between the second light source generating unit 343 and the second half mirror 344 for diffusing the second light source. The second light source M1 is generated by the unit 343.

When the optical positioning device 100 that performs the two-way imaging with a single imaging device is positioned with the upper plate member 1, the first light source L1 generated by the first light source generating unit 333 is diffused by the first diffusing member 335 to generate the first light source. The first light source L1 is generated by the unit 333, and the first light source L1 is projected by the first half mirror 334 by the first projection end 331 to the first of the upper plate 1 at a first image capturing angle θ1. An optical point 11 is formed, and a first reflected light L2 reflected by the first optical point 11 of the upper plate 1 is projected to the first half mirror 334 via the first projection end 331, and the first light is received by the first light The light-receiving half mirror 322 is projected toward the total reflection mirror 321 , and the first reflection image 321 is reflected by the total reflection mirror 321 The light-receiving half mirror 322 is passed through the light-receiving half mirror 322 to the image pickup device 31.

The second light source generating unit 343 of the second image capturing unit 34 generates the first The second light source M1 diffuses the second light source M1 generated by the second light source generating unit 343 via the second diffuser 345, and the second light source M1 is reflected by the second half mirror 344 by the second projection end 341. The second image capturing angle θ2 is projected to the second optical point 21 of the lower plate member 2, and a second reflected light M2 reflected by the second optical point 21 of the lower plate member 2 is passed through the second projection end 341. Projected toward the second half mirror 344, and then the light-receiving half mirror 322 projected by the second light-receiving end 342, and then reflected by the light-receiving half mirror 322 to reflect a second image M3 to the image. Device 31.

Please refer to FIG. 4 to FIG. 6 at the same time, the optical positioning device for performing bidirectional imaging with a single imaging device is applied to a printing device 6 which is provided with an upper plate holder 61. The plate holder 62 and the pair of position devices 63 are next. The optical positioning device 100 for performing bidirectional imaging with a single imaging device is disposed between an upper plate member 1 and a lower plate member 2 for a first optical point 11 and a lower plate member of the upper plate member 1. A second optical point 21 is imaged and positioned, wherein the upper plate member 1 is a steel plate and the second plate member 2 is a flexible circuit board.

The upper plate member 1 is positioned on a plate holder 61 on one of the printing devices 6, and the upper plate holder 61 is coupled to an upper displacement mechanism 64. The present invention performs optical positioning of bidirectional imaging with a single imaging device. The device is not limited to use on any of the implements, and the present embodiment uses a printing device as an example. The upper displacement mechanism 64 is a Z-axis upper displacement mechanism that can drive the upper plate holder 61 to be displaced by a Z-axis Z. The upper plate holder 61 can be displaced by the upper displacement mechanism 64. The lower plate member 2 is positioned on the lower plate member seat 62, and the lower plate member seat 62 is coupled to the lower displacement mechanism 65. The lower displacement mechanism 65 is an XY axial displacement mechanism for driving the lower plate member. The seat 62 is displaced by one of an X-axis and a Y-axis, and the lower plate holder 62 can be displaced by the lower displacement mechanism 65.

When the printing device 6 is in use, the upper plate member 1 is positioned on the upper plate member holder 61, and the lower plate member 2 is positioned at the lower plate member holder 62, at which time the user drives the alignment device 63 so that The aligning device 63 drives the optical setting of performing bidirectional imaging with a single imaging device The bit device 100 is moved between the plate holder 62 and the upper plate holder 61 below the printing device 6, and the first image L3 of the upper plate member 1 is obtained.

The first light source L1 generated by the first light source generating unit 333 is projected to the upper plate via the first projection end 331 of the first image capturing unit 33 when the first image L3 of the upper image forming unit 333 is obtained by the image capturing device. The first optical point 11 of the first optical point 11 of the upper plate member 1 is reflected by the first projection end 331 of the first image capturing unit 33. The first light-receiving end 332 of the first image capturing unit 33 projects the light-receiving half mirror 322 of the light-receiving unit 32, and the light-receiving half mirror 322 projects the first reflected light L2 toward the whole The mirror 321 is further reflected by the total reflection mirror 321 to the first imaging image L3 via the light-receiving half mirror 322 to the imaging device 31.

When the second image M3 is obtained, the second light source M1 generated by the second light source generating unit 343 is projected to the second light of the lower plate 2 via the second projection end 341 of the second image capturing unit 34. Point 21, and a second reflected light M2 reflected by the second optical point 21 of the lower plate member 2 passes through the second projection end 341 of the second image capturing unit 34, and the second image capturing unit 34 is used by the second image capturing unit 34. The second light-receiving end 342 is projected to the light-receiving half mirror 322 of the light-receiving unit 32, and the second reflected light M2 is projected by the light-receiving half mirror 322 to a second image M3. Imaging device 31. And according to the first imaging point L3 of the first optical point 11 and the second optical point 21 and the second imaging M3, the lower plate member 62 is driven to be displaced by one of the X-axis and the Y-axis by the lower displacement mechanism 65. The first optical point 11 of the upper plate member 1 and the second optical point 21 of the lower plate member 2 are imaged and positioned. At this time, the alignment device 63 drives the optical positioning device 100 to perform bidirectional imaging with a single imaging device. The optical positioning device 100 that performs the two-way imaging with a single imaging device is moved out between the upper plate holder 61 and the lower plate holder 62, and then the upper plate member 61 is driven by the upper displacement mechanism 64 to lower the upper plate. The piece 1 is attached to the surface of the lower plate member 2 and printed.

The above-mentioned embodiments are only intended to illustrate the invention, and are not intended to limit the scope of the invention, and other equivalent modifications may be made without departing from the spirit of the invention. Or the replacement shall be included in the scope of the patent application described later.

100‧‧‧Optical positioning device

31‧‧‧ camera

32‧‧‧Lighting unit

321‧‧‧ total reflection mirror

322‧‧‧Lighting half mirror

33‧‧‧First image capture unit

331‧‧‧first projection end

332‧‧‧First light receiving end

333‧‧‧First light source generating unit

334‧‧‧first half mirror

335‧‧‧First diffuser

34‧‧‧Second image taking unit

341‧‧‧second projection end

342‧‧‧second light receiving end

343‧‧‧Second light source generating unit

344‧‧‧second half mirror

345‧‧‧Second diffusion parts

θ‧‧‧Lighting reflection angle

Θ1‧‧‧first image angle

Θ2‧‧‧second image angle

Claims (9)

An optical positioning device for performing bidirectional imaging with a single camera device is disposed between an upper plate member and a lower plate member for a first optical point of the upper plate member and a second optical portion of the lower plate member The image positioning device is characterized in that the optical positioning device comprises: an image capturing device located between the upper plate member and the lower plate member; and a light receiving unit comprising: a total reflection mirror on which the position is located Between the plate member and the lower plate member, facing the camera device; a light-receiving half mirror is located between the total reflection mirror and the camera device, and corresponds to the camera device with a light-receiving angle; a first image capturing unit is disposed between the upper plate member and the light receiving half mirror, and has a first projection end and a first light receiving end. The first image capturing unit includes: a first image capturing unit The light source generating unit generates a first light source; a first half mirror is disposed between the first projection end and the first light receiving end, and corresponds to the first light source by a first image capturing angle; a second image capturing unit positioned between the lower plate member and the light receiving half mirror The second image capturing unit includes: a second light source generating unit that generates a second light source; and a second half mirror that is located at the second projection end and the second image capturing unit Between the two light receiving ends, and corresponding to the second light source by a second image capturing angle; the first light source generated by the first light source generating unit is reflected by the first half mirror by the first light source a projection end is projected toward the first optical point of the upper plate member, and a first reflected light reflected by the first optical point of the upper plate member is projected to the first half mirror through the first projection end, and then a light-receiving half mirror projected by the first light-receiving end, the light-receiving half mirror projecting the first reflected light toward the total reflection mirror, and then the first image is reflected by the total reflection mirror Receiving a half mirror to the camera device; The second light source generated by the second light source generating unit is projected by the second half mirror to be projected by the second projection end toward the second optical point of the lower plate member, and the second plate member is a second reflected light reflected by the two optical points is projected to the second half mirror through the second projection end, and the light receiving half mirror is projected by the second light receiving end, and the light receiving half is further The mirror reflects a second imaging reflection to the camera. An optical positioning device for performing bidirectional imaging with a single imaging device as described in claim 1, wherein the first image capturing unit is further provided with a first diffusion member, the first diffusion member being tied to the first light source. Between the unit and the first half mirror, the first light source generated by the first light source generating unit is diffused. An optical positioning device for performing bidirectional imaging with a single imaging device as described in claim 1, wherein the second image capturing unit is further provided with a second diffusion member, the second diffusion member being tied to the second light source. Between the unit and the second half mirror, the second light source generated by the second light source generating unit is diffused. An optical positioning device for performing bidirectional imaging with a single camera device is disposed between an upper plate member and a lower plate member for a first optical point of the upper plate member and a second optical portion of the lower plate member The image positioning device is characterized in that the optical positioning device comprises: an upper plate bearing seat for receiving the upper plate member, and the upper plate member bearing seat is coupled with an upper displacement mechanism, the upper plate member bearing seat The displacement of the upper displacement mechanism can be driven; the lower plate bearing seat is for receiving the lower plate member, and the lower plate bearing seat is combined with the displacement mechanism, and the lower plate bearing seat can be driven by the lower displacement mechanism a camera device positioned between the upper plate member and the lower plate member; a light receiving unit comprising: a total reflection mirror positioned between the upper plate member and the lower plate member, facing the same Camera device a light-receiving half mirror disposed between the total reflection mirror and the camera device, and corresponding to the camera device with a light-receiving reflection angle; a first image capturing unit positioned on the upper plate member and the light-receiving device The first image capturing unit includes a first light source generating unit for generating a first light source and a first half mirror. Positioned between the first projection end and the first light-receiving end, and corresponding to the first light source by a first image capturing angle; a second image capturing unit positioned at the lower plate and the light receiving portion The second image capturing unit includes a second light source generating unit for generating a second light source and a second half mirror. Positioned between the second projection end and the second light-receiving end, and corresponding to the second light source by a second image capturing angle; the first light source generated by the first light source generating unit is connected to the first light source The first projection end of the image taking unit is projected to the first optical point of the upper panel, and the first light of the upper panel After the first reflected light reflected by the point passes through the first projection end of the first image capturing unit, the light receiving semi-reflection projected from the first light receiving end of the first image capturing unit to the light receiving unit The light-receiving half mirror projects the first reflected light toward the total reflection mirror, and then the total reflection mirror reflects a first image through the light-receiving half mirror to the image pickup device; the second light source generates The second light source generated by the unit is projected to the second optical point of the lower plate member via the second projection end of the second image capturing unit, and the second optical point of the lower plate member is reflected by the second optical point After the second reflected light passes through the second projection end of the second image capturing unit, the light receiving half mirror of the light receiving unit is projected by the second light receiving end of the second image capturing unit, and then The light-receiving half mirror projects the second reflected light to a second image to the image pickup device. Performing the optical setting of two-way imaging with a single camera device as described in item 4 of the patent application scope a first device, wherein the first image capturing unit is further disposed with a first diffusing member, the first diffusing member is coupled between the first light source generating unit and the first half mirror for diffusing the first light source The first light source produced by the unit. An optical positioning device for performing bidirectional imaging with a single imaging device as described in claim 4, wherein the second image capturing unit is further provided with a second diffusion member, the second diffusion member being tied to the second light source. Between the unit and the second half mirror, the second light source generated by the second light source generating unit is diffused. The optical positioning device for performing bidirectional imaging with a single imaging device as described in claim 4, wherein the upper plate member is a steel plate and the lower plate member is a flexible circuit board. The optical positioning device for performing bidirectional imaging by a single imaging device as described in claim 4, wherein the upper displacement mechanism is a Z-axis upper displacement mechanism that can drive the upper plate holder to be displaced in a Z-axis. The optical positioning device for performing bidirectional imaging by a single imaging device according to the fourth aspect of the patent application, wherein the lower displacement mechanism is an XY axial displacement mechanism capable of driving the lower plate holder to an X-axis, Y One of the axial displacements.