JPH04281677A - Camera apparatus - Google Patents

Abstract

PURPOSE:To obtain magnified images of different parts simultaneously without moving a camera. CONSTITUTION:An image pickup lens 24 magnifying a film carrier 2 as an object and forming the image onto an image forming face 23, a 1st camera 21 having an image pickup element 21a to the image forming face 23 on which one end of the film carrier 2 is formed, and a 2nd camera 22 having an image pickup element 22a to the image forming face 23 on which the other end of the film carrier 2 is formed are fitted to a base plate 26. Every time a half of horizontal scanning lines is scanned, a switching signal is sent and a picture signal from a 1st camera 21 is switched into a picture signal from a 2nd camera 22 and sent to a display section when the switching signal is received.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera device, and more particularly to a camera device suitable for measuring wiring patterns of electronic components.

0002

2. Description of the Related Art Generally, as shown in FIG. 7, electronic components used in thermal transfer printers include a head 1 equipped with a heating element and a film carrier 2 equipped with a head decoder, etc., each having a comb-like shape. It has wiring patterns 3 and 4 arranged in rows. These wiring patterns 3 and 4 are
For example, 144 wires are provided in a 20 mm range, and the pitch is 0.1 mm. Then, these two electronic components are welded to each other at the corresponding wiring patterns 3 and 4.

When welding the head 1 and the film carrier 2, the wiring patterns 3 and 4 of the electronic component are aligned and welded together.

By the way, in the above-mentioned alignment,
Since the overlapping portions of the wiring patterns 3 and 4 are visually inspected using a microscope, the accuracy of parallelism is poor, and as shown in Figure 8, welding defects are likely to occur, resulting in poor yields of finished products. There was a problem.

[0005] Therefore, the applicant of the present invention is considering a technique of capturing an image of a wiring pattern, etc. with a camera, and calculating the inclination of the wiring pattern, etc. based on the image data.

[0006]

[Problems to be Solved by the Invention] However, since the number of pixels of the camera that images the above-mentioned wiring patterns, etc. is limited to, for example, 512 x 512, it is difficult to obtain an enlarged image for calculating precise inclinations. Then, it is necessary to take images of two different parts such as wiring patterns, and the camera has to be moved, which worsens the operability and increases the image processing time, resulting in the problem of inefficiency. there were.

[0007] Therefore, an object of the present invention is to enable enlarged images of different parts to be obtained simultaneously without moving the camera.

[0008]

[Means for Solving the Problems] The technical means of the present invention for solving these problems are as follows:

an imaging lens that magnifies a subject and forms an image on an imaging plane; a first camera that has an imaging element on an imaging plane on which one end of the subject is imaged; and a second camera having an image sensor on its imaging plane.

[0010] Also, an imaging lens that magnifies a subject and forms an image on an imaging plane, a first camera that has an imaging element on an imaging plane on which one end of the subject is imaged, and a first camera that has an imaging element on the imaging plane on which one end of the subject is focused; There was a second camera having an image sensor on the imaging surface, a display unit that processes the image signal from the first camera and the image signal from the second camera and displays it on a screen, and a switching signal. A switching circuit that switches the image signal from the first camera and the image signal from the second camera and sends it to the display section, and a switching circuit that sends out the switching signal every time 1/2 of the horizontal scan is scanned. It is equipped with a signal sending circuit.

[0011]

[Operation] According to the camera device having the above structure, the subject is magnified by the imaging lens and imaged on the imaging plane. Of this enlarged image, one end of the subject is imaged by the first camera, and the other end of the film carrier 2 is imaged by the second camera.

According to the second means, the switching signal is sent out from the switching signal sending circuit every time 1/2 of the horizontal scan is performed, and the image signal from the first camera and the image signal from the second camera are sent out. The image signals from the display are switched and sent to the display section. Therefore, half of the image capture screen of each camera is displayed on one display unit.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A camera device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Similar to the above, the camera device according to the embodiment is a film carrier that is used when welding a head 1 and a film carrier 2 and has wiring patterns 4 arranged in a comb-like pattern, as shown in FIG. In particular, the common pattern 5 connected to the wiring pattern 4 of the film carrier 2 is taken as an object. The edge of the common pattern 5 is configured as a reference line K, which will be described later.

As shown in FIGS. 1 to 3, the camera device 20 according to the embodiment includes an imaging lens 24 that magnifies the common pattern 5 of the film carrier 2 and forms an image on the imaging surface 23.
The first camera 21 has an imaging element 21a such as a CCD element on the imaging surface 23 on which one end side of the common pattern 5 of the film carrier 2 is imaged, and the other end side of the common pattern 5 of the film carrier 2 Image forming surface 23
The second camera 22 includes an image pickup device 22a such as a CCD device. The imaging lens 24 is housed in a case body 25 and fixed to the tip of the base plate 26. Further, the first camera 21 and the second camera 22 are fixed to the base plate 26 in parallel. A transparent window member 27 is provided on the front side of the camera to allow only images reaching the image pickup devices 21a and 22a of each camera to pass through. Further, the imaging lens 24 and its optical path are covered with a cover 28. A transparent glass 29 attached to a cover 28 is provided on the front side of the imaging lens 24, and a filter glass 30 is provided on the rear side of the imaging lens 24. This filter glass 30 has a passage hole on the optical path and is interposed between light transmitting members 31 and 32 fixed to the base plate 26, and a ball elastic presser member 33 provided on one of the light transmitting members 31. It is pressed and supported by the other transparent member 32 by.

Further, as shown in FIG. 3, this camera device 20 includes a display section 35 that processes the image signals from the first camera 21 and the image signals from the second camera 22 and displays them on a screen. ing. The display unit 35 has a screen configuration of 512×512 pixels, as shown in FIGS. 4 and 5. Furthermore, this camera device 20 includes a switching circuit 36 that switches the image signal from the first camera 21 and the image signal from the second camera 22 and sends it to the side of the display section 35 when a switching signal is received, and a horizontal 1/2 of scan (256 pixels)
A switching signal sending circuit 40 is provided which sends out a switching signal every time the image is scanned.

The switching signal transmitting circuit 40 includes a switching signal transmitting circuit 41 that adjusts the timing and transmits a switching signal to the switching circuit 36 when a start signal is received, and an oscillation circuit 42 that transmits a pulse signal of a predetermined period. , a counter circuit 43 that counts the pulse signals sent out by the oscillation circuit 42 and sends out the activation signal when the counted value becomes 1/2 of the number of horizontal pixels on the screen;
An initialization circuit 44 is provided for initializing the .

The switching signal generating circuit 41 includes a multivibrator 45 that outputs the signal after a predetermined time delay after receiving the activation signal, and a sending section 46 that sends out the switching signal based on the output of the multivibrator 45.

The initialization circuit 44 includes a synchronization signal generation circuit 47 that sends out a horizontal synchronization signal and a vertical synchronization signal for a scanned image, and an AND circuit 48 that sends out an initialization signal when the horizontal and vertical synchronization signals are present at the same time. It is equipped with

Therefore, the camera device 20 according to this embodiment
works as follows. The common pattern 5 of the film carrier 2 is magnified by the imaging lens 24 and imaged onto the imaging plane 23 . Of this enlarged image, one end side of the common pattern 5 of the film carrier 2 is imaged by the first camera 21, and an image of the other end side of the common pattern 5 of the film carrier 2 is imaged by the second camera 22.

Then, the switching signal sending circuit 40 sends out a switching signal every time 1/2 of the horizontal scan (256 pixels) is scanned, and the image signal from the first camera 21 and the image signal from the second camera 22 are sent out. The image signals are switched every 256 pixels and sent to the display section 35. Therefore, as shown in FIGS. 4 and 5, half of the imaging screen of each camera is displayed on one display unit 35. In addition, the switching signal sending circuit 4
At 0, the counter circuit 43 is initialized every time the screen is updated, so a switching signal with no deviation is sent out, and therefore, an image is output at a regular position on the display section 35.

Therefore, compared to the case where two ends of the reference line K are imaged with one camera, images can be taken with the camera fixed, and the images taken by each camera are reduced by 1/2.
Although they are two at a time, they can be displayed on the same screen, which improves operability and screen processing efficiency.

In this state, the angle of the reference line K of the common pattern 5 is calculated as follows using, for example, a personal computer. First, in the pixel coordinate system of the above-mentioned imaging screen of the reference line K shown in FIG.
Read the coordinates of pixels in the direction perpendicular to the standard line H at some points on the X coordinate. Then, the angle of the reference line K is calculated based on these coordinates.

In this case, as shown in FIG. 5, the camera device 20 images both ends of the reference line K and determines the angle of the reference line K based on the coordinates of the reference line K at both ends. The angle is calculated with approximately the same precision as when the coordinates are calculated for the entire K, and the pixel density of the image taken by the camera device 20 is compared to when the entire image is captured with one camera (range A in FIG. 5). The larger (for example, about 8 times), the higher the accuracy of the calculated coordinates.

Then, by rotating the film carrier 2 by this calculated angle, the wiring pattern 4 of the film carrier 2 can be overlapped parallel to the wiring pattern 3 of the head 1, as shown in FIG. In this case, since the accuracy of the calculated angle is high, a situation in which the wiring pattern 4 of the film carrier 2 is tilted and intersects with another wiring pattern 3 of the head 1 is prevented. Thereafter, in this state, the wiring pattern 3 of the head 1 and the wiring pattern 4 of the film carrier 2 are welded together. In this case, head 1
Since the wiring pattern 3 of the film carrier 2 and the wiring pattern 4 of the film carrier 2 are not inclined to each other and do not intersect with each other, welding with different wiring patterns is prevented, and as a result, the yield is improved.

[0025] In the above embodiment, the images of both cameras are displayed on one display section 35, but the invention is not necessarily limited to this, and the images may be displayed individually on the two display sections. It's good.

Further, in the above embodiment, the camera device 20 is used for detecting the position of the common pattern 5 of the film carrier 2, but the camera device 20 is not necessarily limited to this, and may be used for various types of imaging. Of course.

[0027]

[Effects of the Invention] As explained above, since the camera device of the present invention is equipped with two cameras, compared to the case where two parts of the subject are imaged with one camera,
The camera can be fixed and captured at the same time without moving. Therefore, operability is improved and screen processing efficiency is improved.

[0028] Also, every time 1/2 of the horizontal scan is performed, the image signal from the first camera and the image signal from the second camera are switched, so that half of the imaging screen of each camera is displayed on one display unit. By displaying the images one by one, the images captured by each camera can be displayed on the same screen, which makes the screen easier to see and improves processing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a camera device according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a camera device according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a camera device according to an embodiment of the present invention.

FIG. 4 is a diagram schematically showing the operation of the camera device according to the embodiment of the present invention.

FIG. 5 is a diagram showing a pixel coordinate system captured by the camera device according to the embodiment of the present invention.

FIG. 6 is a diagram showing a state in which wiring patterns of electronic components are normally overlapped.

FIG. 7 is a diagram showing an example of an electronic component imaged by a camera device according to an embodiment of the present invention.

FIG. 8 is a diagram showing a state of misalignment of a wiring pattern of an electronic component.

[Explanation of symbols]

1 Head 2 Film carrier 3 Wiring pattern 4 Wiring pattern 5 Common pattern K Reference line H Standard line 20 Camera device 21 First camera 22 Second camera 23 Imaging plane 24 Imaging lens 35 Display section 36 Switching circuit 40 Switching signal sending circuit 41 Switching signal transmission circuit 42 Oscillation circuit 43 Counter circuit 44 Initialization circuit

Claims (2)

[Claims] Claim 1: an imaging lens that magnifies a subject and forms an image on an imaging plane; a first camera having an imaging element on an imaging plane on which one end of the subject is imaged; 1. A camera device comprising: a second camera having an imaging element on an imaging plane. 2. An imaging lens that magnifies a subject and forms an image on an imaging plane; a first camera that has an imaging element on an imaging plane on which one end of the subject is imaged; There was a second camera having an image sensor on the imaging surface, a display unit that processes the image signal from the first camera and the image signal from the second camera and displays it on a screen, and a switching signal. A switching circuit that switches the image signal from the first camera and the image signal from the second camera and sends it to the display section, and a switching circuit that sends out the switching signal every time 1/2 of the horizontal scan is scanned. A camera device comprising a signal sending circuit.