JP2006276420A - Camera device for image processing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera device for image processing capable of coping with a plurality of lenses having different outside diameters. <P>SOLUTION: When a lens, having a 12mm outside diameter which is smaller than that of a lens having a 17mm outside diameter, is mounted on the lens mount part 21 of a camera body 2, it is mounted via an adapter 3 for the lens having the 12mm outside diameter. When a C mount lens, having an outside diameter larger than the lens having the 17mm outside diameter is mounted, it is mounted via an adapter 4 for the C mount lens. By making the lens mount part 21, the adapter 3 for the lens having the 12mm outside diameter and the adapter 4 for the C mount lens have cylindrical shapes, respectively and forming a male screw and a female screw on them, respectively, the plurality of lenses having the different outer diameters are screwed to the camera body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image processing camera device used for inspection / measurement of a product flowing through a production line.

  Image processing is used for inspection and measurement of products flowing through a production line. In order to perform image processing, a camera device for imaging a product and outputting image data is used. Normally, when the subject or purpose changes, it is necessary to change the camera lens accordingly.

  The lens of the image processing camera mainly includes a C mount lens having a constant focal length, a small lens having an outer diameter of 17 mm, and a small lens having an outer diameter of 12 mm. Since the outer diameter of the lens that can be attached to the camera body is determined in advance, if it is desired to change to a different lens by changing the specification after purchasing the camera device, it is necessary to change the camera device.

  The lens mount for a board camera described in Patent Document 1 corresponds to a large number of lenses having different focal lengths by changing the distance from the lens to the CCD by screwing and stacking a plurality of extension mounts on the base mount. Is possible.

Japanese Patent Laid-Open No. 9-258083

  The lens mount for a board camera described in Patent Document 1 can handle a plurality of lenses having different focal lengths, but cannot support a plurality of lenses having different outer diameters.

  An object of the present invention is to provide an image processing camera device that can correspond to a plurality of lenses having different outer diameters.

The present invention includes a camera body including a camera function unit that converts incident light incident through a mounted lens into an electrical signal and outputs image data; and a lens mounting unit for mounting a lens member;
A small-diameter adapter for mounting a small-diameter lens member having an outer diameter smaller than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
The lens mounting portion has a cylindrical shape, and an outer peripheral portion is formed with the directly mounted lens member, so that a male screw that can be screwed with the screw is formed, and an inner peripheral portion is screwed with the small-diameter adapter. Internal thread is formed,
The small-diameter adapter has a cylindrical shape, and an outer peripheral portion is formed with an inner peripheral portion of the lens mounting portion, so that a male screw that can be screwed with the screw is formed, and an inner peripheral portion is connected to the small-diameter lens member. An image processing camera device characterized in that a female screw that can be screwed with the formed male screw is formed.

The present invention also includes a camera body including a camera function unit that converts incident light incident through a mounted lens into an electrical signal and outputs image data, and a lens mounting unit for mounting a lens member,
A large-diameter adapter for mounting a large-diameter lens member having an outer diameter larger than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
The lens mounting portion has a cylindrical shape, and is formed on the outer peripheral portion with a male screw that can be screwed to the screw because it is formed on the directly mounted lens member.
The large-diameter adapter has a cylindrical shape in which the inner diameter at one open end is different from the inner diameter at the other open end, and the inner peripheral portion on the side having a smaller inner diameter is connected to the outer peripheral portion of the lens mounting portion. A female screw that can be screwed with the formed male screw is formed, and a female screw that can be screwed with the male screw formed on the large-diameter lens member is formed on the inner peripheral portion on the side having a larger inner diameter. An image processing camera device.

The present invention also includes a camera body including a camera function unit that converts incident light incident through a mounted lens into an electrical signal and outputs image data, and a lens mounting unit for mounting a lens member,
A small-diameter adapter for mounting a small-diameter lens member having an outer diameter smaller than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
A large-diameter adapter for mounting a large-diameter lens member having an outer diameter larger than that of the directly mounted lens member;
The lens mounting portion has a cylindrical shape, and an outer peripheral portion is formed with the directly mounted lens member, so that a male screw that can be screwed with the screw is formed, and an inner peripheral portion is screwed with the small-diameter adapter. Internal thread is formed,
The small-diameter adapter has a cylindrical shape, and an outer peripheral portion is formed with an inner peripheral portion of the lens mounting portion, so that a male screw that can be screwed with the screw is formed. An internal thread that can be screwed with the formed external thread is formed,
The large-diameter adapter has a cylindrical shape in which the inner diameter at one open end is different from the inner diameter at the other open end, and the inner peripheral portion on the side having a smaller inner diameter is connected to the outer peripheral portion of the lens mounting portion. A female screw that can be screwed with the formed male screw is formed, and a female screw that can be screwed with the male screw formed on the large-diameter lens member is formed on the inner peripheral portion on the side having a larger inner diameter. An image processing camera device.

In the present invention, the large-diameter lens member is a fixed-focus lens member,
The large-diameter adapter includes a nut formed with a female screw that can be screwed with a male screw formed on an outer peripheral portion of the lens mounting portion,
When the large-diameter adapter is screwed to the lens mounting portion, the nut is configured to prevent the large-diameter adapter from being screwed by the nut.

  According to the present invention, a camera body that converts incident light incident through a lens mounted on a lens mounting section into an electrical signal and outputs image data can be directly mounted on the lens mounting section. When a small-diameter lens member having an outer diameter smaller than that of the mounted lens member is mounted, it is mounted via a small-diameter adapter.

  When the directly mounted lens member is mounted, the screw formed on the directly mounted lens member and the external thread formed on the outer peripheral portion of the lens mounting portion are screwed and directly mounted.

  When mounting the small-diameter lens member, the external screw formed on the outer peripheral portion of the small-diameter adapter and the screw formed on the inner peripheral portion of the lens mounting portion are screwed into the lens mounting portion. The small diameter adapter is mounted, and a screw formed on the inner peripheral portion of the small diameter adapter is screwed with a male screw formed on the small diameter lens member, so that the small diameter adapter is attached to the lens mounting portion. The small-diameter lens member is attached via

  Thus, by using an adapter having a simple structure, it is possible to deal with a plurality of lenses having different outer diameters, such as a directly mounted lens member and a small-diameter lens member.

  Further, according to the present invention, it is possible to directly mount the lens mounting portion on a camera body that converts incident light incident through a lens mounted on the lens mounting portion into an electrical signal and outputs image data. When mounting a small-diameter lens member having an outer diameter larger than that of the directly mounted lens member, it is mounted via a large-diameter adapter.

  When the directly mounted lens member is mounted, the screw formed on the directly mounted lens member and the external thread formed on the outer peripheral portion of the lens mounting portion are screwed and directly mounted.

  When mounting the large-diameter lens member, the large-diameter adapter is formed on the inner peripheral portion on the side where the inner diameter is small, and the screw and the external screw formed on the outer peripheral portion of the lens mounting portion are screwed together. The large-diameter adapter is mounted on the lens mounting portion, and a screw is formed on the inner peripheral portion on the side where the inner diameter of the large-diameter adapter is large, and a male screw formed on the large-diameter lens member. The large-diameter lens member is mounted on the lens mounting portion via the large-diameter adapter by screwing.

  Thus, by using an adapter having a simple structure, it is possible to deal with a plurality of lenses having different outer diameters, such as a directly mounted lens member and a large-diameter lens member.

  Further, according to the present invention, it is possible to directly mount the lens mounting portion on a camera body that converts incident light incident through a lens mounted on the lens mounting portion into an electrical signal and outputs image data. When mounting a small-diameter lens member whose outer diameter is smaller than that of the directly mounted lens member, it is mounted via a small-diameter adapter, and when mounting a small-diameter lens member whose outer diameter is larger than that of the direct-mounted lens member, it is inserted via a large-diameter adapter. Install.

  When the directly mounted lens member is mounted, the screw formed on the directly mounted lens member and the external thread formed on the outer peripheral portion of the lens mounting portion are screwed and directly mounted.

  When mounting the small-diameter lens member, the external screw formed on the outer peripheral portion of the small-diameter adapter and the screw formed on the inner peripheral portion of the lens mounting portion are screwed into the lens mounting portion. The small diameter adapter is mounted, and a screw formed on the inner peripheral portion of the small diameter adapter is screwed with a male screw formed on the small diameter lens member, so that the small diameter adapter is attached to the lens mounting portion. The small-diameter lens member is attached via

  When mounting the large-diameter lens member, the large-diameter adapter is formed on the inner peripheral portion on the side where the inner diameter is small, and the screw and the external screw formed on the outer peripheral portion of the lens mounting portion are screwed together. The large-diameter adapter is mounted on the lens mounting portion, and a screw is formed on the inner peripheral portion on the side where the inner diameter of the large-diameter adapter is large, and a male screw formed on the large-diameter lens member. The large-diameter lens member is mounted on the lens mounting portion via the large-diameter adapter by screwing.

  Thus, by using an adapter having a simple structure, it is possible to cope with a plurality of lenses having different outer diameters, such as a directly mounted lens member, a small-diameter lens member, and a large-diameter lens member.

  According to the invention, when the large-diameter lens member is a fixed-focus lens member, the large-diameter adapter has a female screw that can be screwed with a male screw formed on an outer peripheral portion of the lens mounting portion. Has a formed nut.

  Thereby, when the large diameter adapter is screwed to the lens mounting portion, the focal length of the large diameter lens member is adjusted by preventing the large diameter adapter from being screwed by the nut. Is possible.

  The present invention is characterized in that an adapter can be screwed onto the lens mounting portion to cope with a plurality of lenses having different outer diameters.

  The names and dimensions of the screws shown below are based on JIS standards such as JIS B 0123 (how to represent screws) and JIS B 0205 (general metric screws).

  FIG. 1 is a schematic diagram showing a configuration of an image processing camera apparatus 1 according to an embodiment of the present invention. An image processing camera device (hereinafter simply referred to as “camera device”) 1 includes a camera body 2 having a camera function unit 20 having a photographing function and a lens mounting unit 21, a 12 mm lens adapter 3, and a mounting member 40. A C-mount lens adapter 4 having a nut 41 is included.

  With such a configuration, the camera device 1 of the present invention has, for example, an outer diameter of 17 mm lens as a directly mounted lens member, an outer diameter of 12 mm lens as a small diameter lens member, and a C mount lens as a large diameter lens member. It corresponds to three different types of lenses. Here, the lens includes a lens which is an optical member, a housing for holding the lens, a screw mechanism for mounting on the camera device, and the like.

  When mounting a lens having an outer diameter of 17 mm, the lens is directly screwed to the lens mounting portion 21 of the camera body 2. When mounting a lens with an outer diameter of 12 mm, a 12 mm lens adapter 3, which is a small diameter adapter, is screwed into the lens mounting portion 21 of the camera body 2 and screwed through this. When the C mount lens is mounted, the C mount lens adapter 4 which is a large diameter adapter is screwed to the lens mounting portion 21 of the camera body 2 and screwed through this.

  FIG. 2 is a schematic diagram showing the configuration of the camera body 2. FIG. 2A shows a front view, and FIG. 2B shows a side view. FIG. 3 is a schematic view showing a state in which the lens body 10 having an outer diameter of 17 mm is attached to the camera body 2. 2B and 3 are cross-sectional views of the 17 mm outer diameter lens 10 and the lens mounting portion 21 for easy understanding of the configuration. Although not shown, the camera function unit 20 converts the incident light incident through the lens mounted on the lens mounting unit 21 into an electrical signal and outputs image data, and is output from an image sensor such as a CCD. An output interface for outputting image data to an image processing apparatus or the like is provided. The lens mounting portion 21 has a cylindrical shape for securing an optical path from the lens to the image sensor, and a male screw 22 for screwing a lens having an outer diameter of 17 mm is formed on the outer peripheral portion thereof. Is formed with a female screw 23 for screwing the 12 mm lens adapter 3.

  As shown in FIG. 3, a female screw 11 is formed on the lens 10 having an outer diameter of 17 mm, and the female screw 11 and the male screw 22 of the lens mounting portion 21 are screwed together. The female screw 11 and the male screw 22 are both M15.5 screws, and are standard screws of the lens 10 having an outer diameter of 17 mm that are widely commercially available.

  FIG. 4 is a schematic diagram showing the configuration of the 12 mm lens adapter 3. 4A shows a front view, and FIG. 4B shows a cross-sectional view when viewed from the side. FIG. 5 is a schematic view showing a state in which an outer diameter 12 mm lens 12 is attached to the camera body 2 via a 12 mm lens adapter 3. FIG. 5 is a cross-sectional view showing the outer diameter 12 mm lens 12 and the lens mounting portion 21 for easy understanding of the configuration.

  The 12 mm lens adapter 3 has a cylindrical shape in order to secure an optical path from the lens to the image sensor, and an external screw 30 is formed on the outer peripheral portion thereof to be screwed into the lens mounting portion 21 of the camera body 2. A female thread 31 for screwing the lens 12 having an outer diameter of 12 mm is formed on the inner periphery.

  As shown in FIG. 5, the male screw 30 formed on the outer peripheral portion of the 12 mm lens adapter 3 and the screw 23 formed on the inner peripheral portion of the lens mounting portion 21 of the camera body 2 are screwed together to form 12 mm. The lens adapter 3 is attached to the lens attachment portion 21 of the camera body 2. A male screw 13 is formed on the outer diameter 12 mm lens 12, and this male screw 13 is formed on the inner peripheral portion of the 12 mm lens adapter 3, so that the screw 31 is screwed together to make the outer diameter 12 mm lens 12 12 mm. Attached to the lens adapter 3. The male screw 13 and the female screw 31 are both M10.5 screws, and are standard screws for mounting the lens 12 having an outer diameter of 12 mm that are widely commercially available.

  The dimensions of the male thread 30 of the 12 mm lens adapter 3 and the female thread 23 of the lens mounting portion 21 screwed to the 12 mm lens adapter 3 are standard thread dimensions of the lens 10 having an outer diameter of 17 mm due to the structure of the 12 mm lens adapter 3. It is necessary to make it smaller than M15.5 and larger than M10.5 which is a standard screw size of the lens 12 having an outer diameter of 12 mm. Since the C-mount lens 10 described later has a relatively large lens diameter, if the size of the female screw 23 of the lens mounting portion 21 is made too small, the thickness of the lens mounting portion 21 increases, that is, the opening diameter of the lens mounting portion 21. Becomes smaller, and a sufficient optical path of incident light that has passed through the C-mount lens 10 cannot be secured. If a sufficient optical path cannot be secured, the end of the captured image will be lost, which is not desirable. Therefore, when trying to increase the opening diameter of the lens mounting portion 21 to such an extent that the end portion of the photographed image is not lost, the male screw 30 of the 12 mm lens adapter 3 and the female screw 23 of the lens mounting portion 21 to be screwed to the male screw About a dimension, the range of M13 or more and less than M15.5 becomes a preferable dimension range. Here, considering the mechanical strength of the lens mounting portion 21 and the 12 mm lens adapter 3, in order to ensure the thickness of the lens mounting portion 21 and the thickness of the 12 mm lens adapter 3, With respect to the dimensions of the screw 30 and the female thread 23 of the lens mounting portion 21 that is screwed to the screw 30, M13 is a particularly preferable dimension.

  FIG. 6 is a schematic diagram illustrating the configuration of the mounting member 40 of the C-mount lens adapter 4. Fig.6 (a) shows a front view and FIG.6 (b) shows sectional drawing when it sees from a side surface. FIG. 7 is a schematic view showing the configuration of the nut 41 of the C-mount lens adapter 4. Fig.7 (a) shows a front view, FIG.7 (b) shows sectional drawing when it sees from a side surface. FIG. 8 is a schematic view showing a state in which the C mount lens 14 is attached to the camera body 2 via the C mount lens adapter 4.

  The mounting member 40 has a cylindrical shape in order to secure an optical path from the lens to the image sensor, and is different in the thickness at one open end and the thickness at the other open end. The shape is such that the cylinders are overlapped so that the central axes coincide. A female screw 42 is formed on the inner peripheral portion on one side in the axial direction with a small inner diameter to be screwed into the male screw 22 of the lens mounting portion 21 of the camera body 2, and the inner peripheral portion on the other side in the axial direction with a large inner diameter. A female screw 43 for screwing the C mount lens 14 is formed. The nut 41 is formed with a female screw 44 to be screwed into the lens mounting portion 21. The female screw 42 on the small diameter side of the mounting member 40 and the female screw 44 of the nut 41 are both M15.5 screws and are standard screws for mounting the lens 10 having an outer diameter of 17 mm.

  Since the C mount lens is a fixed focus lens, it is necessary to adjust the focal length by the nut 41. The female screw 44 of the nut 41 and the external screw 22 formed on the outer peripheral portion of the lens mounting portion 21 are screwed together and temporarily mounted, and the screw 42 is formed on the inner peripheral portion of the mounting member 40 on the small diameter side. And the external thread 22 formed on the outer peripheral portion of the lens mounting portion 21 are screwed together to form a screw 43 formed on the inner peripheral portion of the mounting member 40 on the large diameter side and formed on the outer peripheral portion of the C mount lens 14. The external male screw 15 is screwed. After the focal position of the C mount lens 14 is adjusted, the nut 41 is fixed and tightened to prevent the mounting member 40 to which the C mount lens 14 is mounted, thereby adjusting the focal length.

  Since the external thread 15 formed on the C mount lens 14 and the mounting member 40 are formed on the large diameter side, the thread 43 is a U1 thread conforming to JIS B 7127.

  As described above, by using an adapter having a simple structure, it is possible to cope with a plurality of lenses having outer diameters different from those of an outer diameter 17 mm lens, an outer diameter 12 mm lens, and a C mount lens.

  In the above, the configuration including the camera body 2, the 12mm lens adapter 3, and the C mount lens adapter 4 having the mounting member 40 and the nut 41 as the image processing camera device 1 has been described. The camera main body 2 and the 12 mm lens adapter 3 may be included, and the C mount lens adapter 4 may not be included. The camera main body 2 and the C mount lens adapter 4 may be included, and the 12 mm lens adapter 3 may be included. The structure which is not included may be sufficient. When the camera body 2 and the C mount lens adapter 4 are included and the 12 mm lens adapter 3 is not included, it is not necessary to form a female screw on the inner peripheral portion of the lens mounting portion 21.

It is the schematic which shows the structure of the camera apparatus 1 for image processing which is one Embodiment of this invention. 2 is a schematic diagram illustrating a configuration of a camera body 2. FIG. 2 is a schematic view showing a state in which a lens body 10 having an outer diameter of 17 mm is attached to the camera body 2. FIG. It is the schematic which shows the structure of the adapter 3 for 12 mm lenses. It is the schematic which shows the state by which the outer diameter 12mm lens 12 was attached to the camera main body 2 via the adapter 3 for 12mm lenses. It is the schematic which shows the structure of the mounting member 40 of the adapter 4 for C mount lenses. It is the schematic which shows the structure of the nut 41 of the adapter 4 for C mount lenses. FIG. 3 is a schematic view showing a state in which a C mount lens 14 is attached to the camera body 2 via a C mount lens adapter 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image processing camera apparatus 2 Camera main body 3 12mm lens adapter 4 C mount lens adapter 10 Outer diameter 17mm lens 11 Outer diameter 17mm lens 10 formed screw 12 12mm lens 13 12mm lens 12 formed external thread 14 C mount lens 15 Male screw formed on the C mount lens 14 Camera function unit 21 Lens mounting unit 22 Male screw formed on the lens mounting unit 23 Screw formed on the lens mounting unit 21 30 Screw to the 12 mm lens adapter 3 Formed male screw 31 Screw formed on 12 mm lens adapter 3 40 Mounting member 41 Nut 42 Small-diameter side female screw formed on mounting member 40 Large-diameter side female screw formed on mounting member 40 Nut 41 formed for screw

Claims (4)

A camera body including a camera function unit that converts incident light incident through the mounted lens into an electrical signal and outputs image data; and a lens mounting unit for mounting a lens member;
A small-diameter adapter for mounting a small-diameter lens member having an outer diameter smaller than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
The lens mounting portion has a cylindrical shape, and an outer peripheral portion is formed with the directly mounted lens member, so that a male screw that can be screwed with the screw is formed, and an inner peripheral portion is screwed with the small-diameter adapter. Internal thread is formed,
The small-diameter adapter has a cylindrical shape, and an outer peripheral portion is formed with an inner peripheral portion of the lens mounting portion, so that a male screw that can be screwed with the screw is formed. An image processing camera device, wherein a female screw that can be screwed with the formed male screw is formed. A camera body including a camera function unit that converts incident light incident through the mounted lens into an electrical signal and outputs image data; and a lens mounting unit for mounting a lens member;
A large-diameter adapter for mounting a large-diameter lens member having an outer diameter larger than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
The lens mounting portion has a cylindrical shape, and is formed on the outer peripheral portion with a male screw that can be screwed to the screw because it is formed on the directly mounted lens member.
The large-diameter adapter has a cylindrical shape in which the inner diameter at one open end is different from the inner diameter at the other open end, and the inner peripheral portion on the side having a smaller inner diameter is connected to the outer peripheral portion of the lens mounting portion. A female screw that can be screwed with the formed male screw is formed, and a female screw that can be screwed with the male screw formed on the large-diameter lens member is formed on the inner peripheral portion on the side having a larger inner diameter. An image processing camera device. A camera body including a camera function unit that converts incident light incident through the mounted lens into an electrical signal and outputs image data; and a lens mounting unit for mounting a lens member;
A small-diameter adapter for mounting a small-diameter lens member having an outer diameter smaller than a direct-mounted lens member that can be directly mounted on the lens mounting portion;
A large-diameter adapter for mounting a large-diameter lens member having an outer diameter larger than that of the directly mounted lens member;
The lens mounting portion has a cylindrical shape, and an outer peripheral portion is formed with the directly mounted lens member, so that a male screw that can be screwed with the screw is formed, and an inner peripheral portion is screwed with the small-diameter adapter. Internal thread is formed,
The small-diameter adapter has a cylindrical shape, and an outer peripheral portion is formed with an inner peripheral portion of the lens mounting portion, so that a male screw that can be screwed with the screw is formed. An internal thread that can be screwed with the formed external thread is formed,
The large-diameter adapter has a cylindrical shape in which the inner diameter at one open end is different from the inner diameter at the other open end, and the inner peripheral portion on the side having a smaller inner diameter is connected to the outer peripheral portion of the lens mounting portion. A female screw that can be screwed with the formed male screw is formed, and a female screw that can be screwed with the male screw formed on the large-diameter lens member is formed on the inner peripheral portion on the side having a larger inner diameter. An image processing camera device. The large-diameter lens member is a fixed-focus lens member,
The large-diameter adapter includes a nut formed with a female screw that can be screwed with a male screw formed on an outer peripheral portion of the lens mounting portion,
The image according to claim 2 or 3, wherein when the large-diameter adapter is screwed to the lens mounting portion, the nut is prevented from being screwed by the nut. Processing camera device.

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