JP2003207458A - Photographing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simultaneously obtain images at a number of locations only by imaging from one direction even in each curved surface such as inner/outer sides by application to the acquisition of image information in a surface defect automatic inspection such as the outer surface, inner surface, inner bottom surface, end face, or the like of each kind of cylindrical component or the like. <P>SOLUTION: The photographing apparatus simultaneously shoots an opening end face 10 of a subject 1, an outer surface 1a, and the like by photographing a cylindrical subject 1 from the open end face in the axial direction. The photographing apparatus comprises a conical mirror 2 for an outer surface that is in a conical shape having an inner diameter for surrounding the subject 1 while a reflection surface for projecting the outer surface of the subject 1 in a ring shape is formed on the inner-periphery surface, a lighting apparatus for lighting the outer surface of the subject 1, and an imaging apparatus 4 that is arranged at the open end face side of the subject 1 to collectively acquire an outer surface image of the subject that is projected to a reflection surface section and the open end face image of the subject. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image information acquisition technique applied to, for example, a nozzle tip of a gas turbine and other various kinds of cylindrical objects for automatically inspecting surface defects, and more particularly to an outer surface and an inner surface of the cylindrical object. The present invention relates to an image capturing apparatus capable of collectively acquiring a plurality of images such as surface states of a side surface, an opening end surface, and an inner bottom surface by capturing an image of the tubular object in the axial direction.

[0002]

2. Description of the Related Art In recent years, in the case of inspecting surface defects of various objects, recognition of shape and surface state from image data is performed by acquiring digital image information. When inspecting a cylindrical object by applying this technique, it is desirable to efficiently and accurately acquire image information of a plurality of different surfaces such as an outer surface and an inner surface, an opening end surface and an inner bottom surface in advance. Be done.

Conventionally, as a technique for acquiring such image information, there is known a technique in which, for example, an annular region of the entire inside of a steel pipe or the like is illuminated at the same time, and an optical system takes an image of the entire circumferential direction at the same time. (For example, Japanese Patent Laid-Open No. 6-184
26, JP 8-261947 A, JP 9
-318551 publication).

However, there is no known photographing apparatus that can collectively and efficiently obtain image information of a plurality of different surfaces such as an outer surface and an inner surface of a cylindrical object, an opening end surface and an inner bottom surface.

[0005]

As described above, when it is attempted to acquire image information of a plurality of different surfaces such as the outer surface and inner surface of a tubular object, the opening end surface and the inner bottom surface of a cylindrical object, it has been difficult to obtain the image information for each surface. It is necessary to take a picture, and it is necessary to set the position of the picture taking device for each surface. Further, similar setting at the time of photographing is required for each of the curved surfaces of the outer side surface and the inner side surface. Therefore, in reality, it takes a lot of time and labor such as changing the posture of the subject and using various kinds of photographing equipment.

The present invention has been made in view of the above circumstances, and efficiently collects image information of a plurality of different surfaces such as an outer surface and an inner surface of a cylindrical object, an opening end surface and an inner bottom surface efficiently. It is an object of the present invention to provide an imaging device that can be acquired accurately and that can be used and handled easily.

It is another object of the present invention to provide a photographing device capable of continuously generating a plurality of images of a cylindrical subject by expanding photographed images and combining the images.

[0008]

In order to achieve the above object, in the invention according to claim 1, the aperture of the subject is obtained by photographing a tubular subject in the axial direction from the end face side of the aperture. A photographing device for simultaneously photographing an end surface and an outer side surface, wherein a conical shape having an inner diameter capable of surrounding the subject, and a reflection surface for projecting the outer side surface of the subject in a ring shape are formed on an inner peripheral surface thereof. Outer side conical mirror, an illuminating device that illuminates the outer side surface of the subject, an outer side image of the subject that is arranged on the opening end face side of the subject and is projected on the reflection surface portion, and the subject. There is provided an imaging device including an imaging device that collectively acquires an image of an end face of an opening.

According to a second aspect of the present invention, there is provided a photographing device for photographing a cylindrical subject in the axial direction from the opening end face side of the subject so as to photograph the opening end face and the inner side face of the subject at the same time. An inner conical mirror having a conical shape having an outer diameter that can be inserted from the opening end surface of the subject to the inner side surface, and having a reflection surface formed on the outer peripheral surface of the inner surface of the subject in a ring shape; An illumination device that illuminates the inner side surface of the subject, and an image that is arranged on the side of the opening end face of the subject and that collectively acquires the inside face image of the subject and the opening end face image of the subject that are projected on the reflection surface portion. An imaging device comprising: a device.

According to a third aspect of the present invention, there is provided an image taking apparatus which takes an image of a cylindrical subject in the axial direction from the opening end face side of the subject, thereby taking an image of the opening end face, the outer side face and the inner side face of the subject at the same time. There is a conical mirror having an inner diameter capable of surrounding the subject, and the inner peripheral surface of which has a conical mirror for an outer surface on which a reflecting surface for projecting the outer surface of the subject in a ring shape is formed, and the conical mirror for the object. A conical mirror for the inner surface, which has a conical shape having an outer diameter that can be inserted from the opening end surface to the inner surface side, and whose outer peripheral surface is provided with a reflecting surface for projecting the inner surface of the object in a ring shape; and an outer surface of the object. And an illuminating device that illuminates the inner surface, and an outer surface image, an inner surface image, and an opening end surface image of the subject, which are arranged on the opening end face side of the subject and are projected on the respective reflecting surface portions. Further comprising an imaging device for acquiring Te provides an imaging apparatus according to claim.

According to a fourth aspect of the present invention, there is provided projection means for converting the coordinates of the ring-shaped image obtained by the image pickup device and the image of the opening end face of the subject and projecting them on the same plane.

According to a fifth aspect of the present invention, the conical mirror is detachably attached to the subject.

In the invention according to claim 6, the illuminating device reflects illumination light at a reflecting surface portion of the conical mirror,
An optical system for reaching the subject is provided.

According to a seventh aspect of the present invention, a bottomed cylindrical subject is photographed in the axial direction from the opening end face side of the subject, thereby simultaneously photographing the inner side face and the inner bottom face of the subject. And a conical mirror for the inside surface, which has a conical shape with both ends opening having an outer diameter that can be inserted from the opening end surface of the subject to the inside surface side, and a reflection surface for projecting the inside surface of the subject in a ring shape is formed on the outer peripheral surface thereof. An illuminating device that illuminates the inner side surface and the inner bottom surface of the subject, and an inner side image of the subject and an inner side conical mirror that are arranged on the opening end face side of the subject and are projected on the reflection surface portion. An imaging device for acquiring an inner bottom surface image of the subject viewed through openings at both ends, and the conical mirror for the inner surface is held in a tip end portion of a transparent cylindrical body protruding from an image acquisition surface side of the imaging device. Together they are, the lighting device,
There is provided an image pickup apparatus comprising an optical system for irradiating illumination light toward the inner-side conical mirror side through a half mirror provided in the transparent cylindrical body.

The invention according to claim 8 is characterized in that the conical mirror for the inside surface, the illuminating device and the image pickup device can be moved back and forth along the axial direction of the subject by a driving mechanism.

According to a ninth aspect of the invention, the line images in the images of the inner side surface and the inner bottom surface of the subject, which are photographed while the conical mirror for the inner side surface, the illuminating device and the image pickup device are moved by the drive mechanism, are coordinate-converted. And an image processing apparatus that generates the continuous inner surface images of the subject by combining the developed line images.

The invention according to claim 10 is characterized in that an object, which is wholly or partially cylindrical or conical, is applied as the subject.

According to the eleventh aspect of the present invention, as the subject, an object which is wholly or partially polygonal cylindrical or polygonal pyramidal is applied, and a polygonal pyramidal mirror is provided instead of the conical mirror. And

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a photographing apparatus according to the present invention will be described below with reference to the drawings.

First Embodiment (FIGS. 1 to 5) This embodiment is applied to a photographing apparatus for photographing a cylindrical object having one end opened as a subject. FIG. 1 is a schematic diagram showing the overall configuration. 2 and 3 are explanatory views individually showing the mounting states of the conical mirrors for the outer surface and the inner surface. FIG. 4 is an explanatory diagram showing an example of a captured image. FIG. 5 is a schematic diagram showing a modified example of this embodiment.

As shown in FIG. 1, a cylindrical object as a subject 1 has a bottomed cylindrical shape, for example, an open one end surface 1
They are arranged vertically with 0 facing upward. In this embodiment, the subject 1 is provided with an opening end face (upper end face) 10
The image is taken from one side (downward) in the axial direction (up and down direction) from the side to obtain images of the outer side surface 1a and the inner side surface 1b. An inner bottom surface 1c is arranged at the lower end of the subject 1.

The photographing apparatus is roughly classified into a conical mirror 2 for the outer surface and a conical mirror 3 for the inner surface, which are mounted on the subject 1.
An image pickup device 4 for obtaining an image projected on these mirrors 2, 3, an illumination device 5 for irradiating the subject 1 with illumination light for image pickup, and an image processing device 6 for processing the obtained image. It has and. Regarding the subject 1, the outer side conical mirror 2 and the inner side conical mirror 3,
In order to clearly show the configuration, the scale is shown to be larger than that of the imaging device 4, the illumination device 5, and the like.

As shown in FIG. 2 in which this portion is extracted, the outer side conical mirror 2 has a conical shape having an inner diameter capable of surrounding the subject 1 and has both axial ends open.
For example, one end side (upper end side) has a larger diameter than the other end side (lower end side). The outer diameter of the conical mirror 2 for the outer surface is smaller than that of the outer surface of the object 1.
For example, it is detachably fitted and attached in a state of covering the position of the outer side surface 1a to be projected near the upper end. A reflective surface 2a is formed on the entire inner peripheral surface of the outer side conical mirror 2.
The outer surface 1a of the subject 1 is projected in a ring shape on the reflecting surface 2a. That is, the image of the outer peripheral surface 1a of the subject 1 projected on the reflection surface 2a is the subject 1
It can be seen from a direction parallel to the axial direction of.

A ring-shaped holding member 2b for detachably holding the outer peripheral surface of the subject 1 is integrally provided on the other end side of the outer side conical mirror 2, and the ring-shaped holding member 2b can be arbitrarily arranged along the axial direction of the subject 1. It is possible to move to the position of and fix it at a predetermined position with a screw tool (not shown) or the like. As a result, the outer side conical mirror 2 can change its mounting position not only to the upper end position of the subject 1 shown in the drawing but also to any position below the upper end position.

Further, the conical mirror 3 for the inner surface is, as shown in FIG. 3 in which this portion is extracted, the opening end surface 10 of the subject 1.
Side, it is a conical shape having an outer diameter that can be inserted to the inner side surface 1b side, and a reflective surface 3a that projects the inner side surface 1b of the subject 1 in a ring shape is formed on the entire outer peripheral surface thereof. That is, the conical mirror 3 for the inner surface has a smaller diameter on the one end side (upper end side) than on the other end side (lower end side), contrary to the outer surface conical mirror 2. Thereby, the image of the inner peripheral surface 1b of the subject 1 projected on the reflection surface 3a of the conical mirror 3 for the inside surface can also be viewed from a direction parallel to the axial direction of the subject 1. The inner-side conical mirror 3 has a large diameter on the other end side, which is substantially the same as the inner-side surface 1b of the subject 1, and is fitted to the position of the inner-side surface 1b of the subject 1 to be projected, for example, near the upper end. It is detachably fitted and attached.

A ring-shaped holding member 3b for detachably holding the inner peripheral surface 1b of the subject 1 is also integrally provided at the other end of the conical mirror 3 for the inner surface, and the ring-shaped holding member 3b is provided in the axial direction of the subject 1. It can be moved to an arbitrary position along the line, and can be tightened and fixed at a predetermined position by a screw tool (not shown) or the like. As a result, the inner side conical mirror 3 also
The attachment position can be changed not only to the upper end position of the subject 1 shown in the figure but also to any position below the upper end position.

As shown in FIG. 1, the image pickup device 4 has its light-receiving surface for image pickup facing downward (the reflecting surfaces 2a, 3 of the respective conical mirrors 2, 3).
a), and the reflecting surfaces 2a, 3a of the outer conical mirror 2 and the inner conical mirror 3 are arranged.
On the optical axis along the direction parallel to the axial direction of the subject 1.
A reflection image can be acquired. That is, the conical mirror 2 for the outer surface is used as the outer surface 1a of the cylindrical object which is the subject 1.
By mounting it on the outer surface 1a of the cylindrical object, the reflected image is reflected by the outer surface conical mirror 2, and the outer surface state is reflected on the inner surface of the outer surface conical mirror 2 in a circular shape. The outer side conical mirror 2 can be adjusted in its mounting position so that the outer side state of the subject 1 is correctly reflected in a circular shape. In addition, the conical mirror 3 for the inner surface is attached to the subject 1.
By mounting it on the inner surface 1b of the cylindrical object,
Light reflected from the inner side surface of the cylindrical object is reflected by the inner side surface conical mirror 3, and the inner side surface state is reflected on the outer surface of the inner side surface conical mirror 3 in a circular shape. Further, the state of the upper end surface 10 of the cylindrical object is directly reflected on the imaging device 4.

Therefore, in the image pickup device 4 of the present embodiment, an image (outer surface image) reflected on the outer surface 1a of the subject 1 projected on the reflecting surfaces 2a and 3a,
The image reflected on the inner side surface 1b (inner side surface image) and the image of the opening end surface 10 of the subject 1 (opening end surface image) can all be simultaneously acquired.

Although not shown, the illumination device 5 has, for example, a ring-shaped light emitting portion surrounding the light receiving surface of the image pickup device 4, and each of the reflections of the outer side conical mirror 2 and the inner side conical mirror 3 is reflected. Illumination light is emitted toward the surfaces 2a and 3a. That is, in the present embodiment, an arrangement is provided which has an optical system in which the illumination light is reflected by the reflection surfaces 2a and 3a of the conical mirrors 2 and 3 and reaches the outer surface 1a and the inner surface 1b, which are the imaging target portions of the subject 1. Has become. Accordingly, the reflecting surfaces 2a and 3a of the outer surface conical mirror 2 and the inner surface conical mirror 3 for image acquisition are also used as an optical system for guiding the illumination light, and the structure is simple and functional.

The image processing device 6 has a projecting means and has a function of performing coordinate conversion between the ring-shaped inner and outer peripheral surface images of the subject 1 and the opening end face image of the subject 1 acquired by the image pickup device 4. FIG. 4 shows CR as an example of the coordinate-converted image.
It is explanatory drawing which shows the image displayed on T display device. As shown in FIG. 4, the outer surface image 12 of the subject (cylindrical object) 1 projected by the outer conical mirror 2 is represented in a ring shape at the outermost peripheral position in the acquired entire image 11. . Further, on the inner peripheral side, an inner surface image 12 of the subject (cylindrical object) 1 projected by the inner conical mirror 3 is displayed in a ring shape. Further, on the inner peripheral side of the inner surface image 12, an end surface image 13 on the opening end side (upper end side) of the directly observed subject (cylindrical object) 1 is displayed in a ring shape.

Therefore, each of the above images 12, 13, 1
By observing 4, the cylindrical object, which is the subject 1, is photographed along the axial direction thereof, so that the outer surface state reflected on the inner surface of the outer surface conical mirror 2 and the inner surface conical mirror. Since the state of the inner surface reflected on the outer surface of 3 and the state of the upper surface of the cylindrical object can all be captured at the same time, image information of a plurality of different surfaces can be acquired at the same time, and the cylinder that is the subject 1. When there are scratches or other abnormalities on each surface of the object, they can be easily, quickly and surely found.

In the present embodiment, the configuration including both the outer side conical mirror 2 and the inner side conical mirror 3 has been described, but in the present invention, the outer side conical mirror 2 and the inner side conical mirror 2 are described. It is also possible to implement it as a configuration including any one of the three.

Further, FIG. 5 shows a modification in which a conical object is applied as the subject 1. In this example, for example, on the subject 1 whose one end side (upper end side) is larger in diameter than the other end side (lower end side), as in the case shown in FIG. 1, the outer side conical mirror 2 and the inner side conical mirror 2 3 and an image pickup device 4 for obtaining an image projected on these mirrors 2, 3.
An illumination device 5 for irradiating the subject 1 with illumination light for imaging and an image processing device 6 for processing the obtained image are provided. Then, by performing the same operation as above,
Image information can be obtained. In this configuration, since the diameter of the subject 1 changes depending on the position, the ring-shaped holding member that holds the mirrors 2 and 3 on the inner and outer peripheral surfaces of the subject 1 depends on the fitting position. A size with a certain allowance, or a structure capable of expansion / contraction or the like may be used.

In this embodiment, the subject 1 is
Although all cylindrical or conical objects are applied, it is also possible to apply some cylindrical or conical objects.

In this embodiment, the object 1 is a cylindrical or conical object, but it is also possible to apply an object that is wholly or partially polygonal or pyramidal. In this case, instead of the conical mirrors 2 and 3 described above, a configuration having a polygonal pyramid mirror (not shown) can be implemented.

Second Embodiment (FIGS. 6 to 8) In the present embodiment, as a subject 1, a bottomed cylindrical object whose one end is open is photographed in the axial direction of the subject 1, and The present invention is applied as a photographing device capable of simultaneously photographing the peripheral surface and the inner bottom surface. Figure 6
FIG. 7 is a schematic diagram showing the overall configuration, and FIG. 7 is an explanatory diagram showing an example of a captured image. FIG. 8 is an explanatory diagram showing an image in which lines are expanded.

As shown in FIG. 6, the present embodiment is provided with a conical mirror 3 for the inner surface, which has an outer diameter that can be inserted from the opening end surface 10 side of the subject 1 to the inner surface 1b side. . As in the first embodiment described above, the conical mirror 3 for the inner surface is provided with a reflecting surface on the outer peripheral surface thereof that projects the inner surface 1b of the subject 1 in a ring shape.
The inner-side conical mirror 3 is held in the tip of the transparent cylindrical body 7 protruding from the image acquisition surface side of the imaging device 4. In addition, the conical mirror 3 for the inner surface of the present embodiment
Has a conical cylindrical shape with both end surfaces opened, and the inner bottom surface 1c can be seen from above through the central portion.

Inside the transparent cylindrical body 7, there is provided a half mirror 8 located above the inner side conical mirror 3 and inclined at a constant angle, and an illuminating device 5 is arranged on the side thereof. There is. The illuminating device 5 irradiates the half mirror 8 provided in the transparent cylindrical body 7 with illumination light. Then, an optical system of illumination light that is reflected by the half mirror 8 and is emitted toward the inner surface side conical mirror 3 side is configured.

Further, in this embodiment, a drive mechanism 9 is provided on the side of the image pickup device 4, and by this drive mechanism 9, the conical mirror 3 for the inside surface, the illumination device 5, the image pickup device 4, etc.
It is possible to move back and forth along the axial direction.

Further, the image processing device 6 displays line images in the images of the inner side surface and the inner bottom surface of the subject 1 photographed while moving the conical mirror 3 for the inner side surface, the illuminating device 5 and the image pickup device 4 by the drive mechanism 9. , And has the function of generating the continuous inner surface images of the subject by synthesizing and expanding the coordinates and synthesizing the expanded line images.

In this embodiment having such a configuration,
The inner side conical mirror 3 and the transparent cylinder 7 together with the subject 1
Illuminating light is emitted from the illuminating device 5 while moving in a direction parallel to the axis of the subject, and the subject 1 is photographed by the imaging device 4. In this case, when the inner side conical mirror 3 is inserted into the subject 1, the illumination light is reflected by the half mirror 8 and then
Further, the light is reflected by the reflection surface on the outer peripheral surface side of the conical mirror 3 for the inner surface, reaches the inner surface 1a of the subject 1, and irradiates the part.

In this state, the image of the inner surface 1b of the subject 1 is reflected by the reflection surface on the outer peripheral surface side of the inner surface conical mirror 3, and the reflected image is transmitted through the transparent cylindrical body 7 by the image pickup device 4. The object 1 is captured in the same manner as in the first embodiment.
An image of the inner surface image of is captured. At the same time, the image of the inner bottom surface 1c is also captured by the imaging device 4 through the central portion of the inner side conical mirror 3. By moving this action in the direction parallel to the axis of the subject 1 by the drive mechanism 9, the subject 1
The inner side surface 1b of the above can be continuously photographed together with the inner bottom surface 1c.

FIG. 7 shows an example of the obtained line image. As shown in FIG. 7, in the acquired entire image 15, the inner surface image 16 of the subject 1 projected by the inner conical mirror 3 is displayed in a ring shape at the outer peripheral position thereof. Further, on the inner peripheral side, the inner bottom surface image 17 of the subject 1 projected through the inner conical mirror 3 is represented in a circle.

In FIG. 8, the line image of the inner surface 1b of the subject 1 obtained as described above is further processed by the image processing device 6
Shows an example of combining and developing. That is,
As shown in FIG. 8A, in the present embodiment, the line image of FIG. 7 is expanded by 360 degrees by the image processing device 6, and the images in the moved range are combined.
As a result, as shown in FIG. 8B, the image of the inside surface of the inside surface of the subject 1 is converted into the image of the subject 1 by the image synthesis and development.
It is possible to show continuously from the tip (upper end) to the bottom (lower end) of the cylindrical object.

According to the present embodiment, by photographing along the axial direction of the cylindrical object as the subject 1, the state of the inner surface reflected on the outer surface of the conical mirror 3 for the inner surface, and the subject 1. It is possible to simultaneously capture the inner bottom surface state of
Image information of a plurality of different surfaces can be acquired at the same time. Further, the state of the inner surface 1b of the subject 1 can be acquired as a single image by developing the line images of the inner surface of the cylindrical object that are continuously captured and combining the images. Therefore, as a result of being able to capture the outer surface state of the cylindrical object as the subject 1 as a plane image in this way, there is an advantage that it is easy to apply to the subsequent surface defect automatic inspection.

In the present embodiment as well, similar to the case described in the first embodiment, not only the cylindrical object but all or a part of the cylindrical or conical object can be applied. .

[0047]

As described above, according to the present invention, by applying to the image information acquisition in the surface defect automatic inspection of the outer surface, the inner surface, the inner bottom surface and the end surface of various cylindrical parts, the inner and outer surfaces can be obtained. Even on each curved surface such as etc., it is possible to obtain images at many places at the same time only by imaging from one direction,
Image information of a tubular object or the like, which has been difficult to obtain by the conventional technique, can be efficiently and accurately acquired, and a great effect can be obtained in terms of workability, device scale, and the like.

Further, the image information of the inner surface of the cylindrical object can be easily obtained by moving the image pickup device by the driving mechanism and developing the line image in the inner surface of the cylindrical object photographed and synthesizing the images. be able to.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a basic configuration example of a first embodiment of an image capturing apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing a configuration in which the outer side conical mirror shown in FIG. 1 is mounted.

FIG. 3 is a cross-sectional view showing a configuration in which the conical mirror for the inner surface shown in FIG. 1 is mounted.

FIG. 4 is a diagram showing an example of a captured image according to the first embodiment of the first embodiment of the image capturing apparatus according to the present invention.

FIG. 5 is a schematic view showing a modified example of the first embodiment of the image capturing apparatus according to the present invention.

FIG. 6 is a schematic diagram showing a configuration of a second embodiment of an image capturing apparatus according to the present invention.

FIG. 7 is a diagram showing an example of a photographed image according to a second invention of the photographing apparatus according to the present invention.

8A and 8B are second views of the image pickup apparatus according to the present invention.
FIG. 6 is a diagram showing an example of expanding and combining photographed images according to the invention of FIG.

[Explanation of symbols]

1 cylindrical object 2 Conical mirror for outer surface 3 Conical mirror for inner surface 4 Imaging device 5 Lighting equipment 6 Image processing device 7 Transparent cylinder 8 half mirror 9 Drive mechanism

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) G01B 11/30 G01B 11/30 H (72) Inventor Osamu Tsuneoka 1-1-1 Shibaura, Minato-ku, Tokyo Toshiba Corporation Head office F-term (reference) 2F065 AA49 AA60 DD06 FF04 GG17 JJ03 JJ19 JJ26 LL11 QQ31 SS02 SS13 UU07 2G051 AA90 AB06 AB07 AC15 BB03 BB11 CA04 EA30 5B047 AA07 AA11 BC04 5B057 BA12 CA16 CB16 CA16 CB16

Claims (11)

[Claims] 1. A photographing apparatus for photographing a tubular subject in the axial direction from the opening end face side thereof in the axial direction to photograph the opening end face and the outer side face of the subject at the same time, and surrounding the subject. In a conical shape having an inner diameter capable of, on its inner peripheral surface, a conical mirror for an outer surface on which a reflective surface for projecting the outer surface of the subject in a ring shape is formed, and an illumination device for irradiating the outer surface of the subject, An image pickup device is provided which is arranged on the opening end face side of the subject and collectively obtains the outside face image of the subject and the opening end face image of the subject projected on the reflection surface portion. Imaging device. 2. An imaging device for simultaneously photographing an opening end surface and an inner side surface of a subject by photographing a cylindrical subject in the axial direction from the opening end face side of the subject. An inner side conical mirror having a conical shape having an outer diameter that can be inserted into the inner side surface, and an outer peripheral surface of which is provided with a reflecting surface for projecting the inner side surface of the subject in a ring shape, and the inner side surface of the subject is illuminated. An illumination device and an imaging device that is disposed on the opening end face side of the subject and that collectively acquires an inner side image of the subject and an opening end face image of the subject that are projected on the reflection surface portion are provided. Imaging device characterized by. 3. A photographing apparatus for photographing a tubular subject in the axial direction from the opening end face side thereof in the axial direction to photograph simultaneously the opening end face, the outer side face, and the inner side face of the subject. A conical mirror having an inner diameter capable of being surrounded, and an inner peripheral surface thereof having a reflection surface for reflecting the outer surface of the subject in a ring shape, and a conical mirror for outer surface,
An inner conical mirror having a conical shape having an outer diameter that can be inserted from the opening end surface of the subject to the inner side surface, and having a reflection surface formed on the outer peripheral surface of the inner surface of the subject in a ring shape; An illumination device for irradiating the outer surface and the inner surface of the subject, and an outer surface image, an inner surface image, and an opening end surface image of the subject, which are arranged on the opening end face side of the subject and are projected on the reflecting surface portions. And an image pickup device for collectively acquiring and. 4. A projection means for coordinate-converting a ring-shaped image acquired by the image pickup device and an aperture end surface image of a subject and projecting the same on the same plane. The image capturing apparatus according to any one of claims. 5. The conical mirror is detachably attached to the subject.
The imaging device according to any one of 1 to. 6. The illuminating device according to claim 1, wherein the illuminating device has an optical system that reflects the illumination light on a reflection surface portion of the conical mirror to reach the subject. Imaging device. 7. A photographing apparatus for photographing an inner side surface and an inner bottom surface of a subject at the same time by photographing a bottomed tubular subject in the axial direction from the end face side of the opening, the aperture of the subject. A conical mirror for the inner surface, which has a conical shape with both ends open so that it can be inserted from the end surface to the inner surface side, and whose outer peripheral surface is provided with a reflecting surface for projecting the inner surface of the subject in a ring shape; An illumination device that irradiates the side surface and the inner bottom surface, and an inner surface image of the object that is arranged on the side of the opening end surface of the object and is projected on the reflection surface portion, and can be seen through both end opening portions of the conical mirror for the inner surface. An imaging device for acquiring an inner bottom surface image of the subject, wherein the inner side conical mirror is held in a distal end portion of a transparent cylindrical body protruding from the image acquisition surface side of the imaging device, and The illuminating device has an optical system that illuminates illumination light toward the inner-side conical mirror side via a half mirror provided in the transparent cylindrical body. 8. The photographing apparatus according to claim 7, wherein the conical mirror for the inside surface, the illuminating device, and the imaging device can be moved back and forth along the axial direction of the subject by a driving mechanism. 9. A line image in an image of the inner side surface and the inner bottom surface of the subject photographed while moving the conical mirror for the inner side surface, the illuminating device and the image pickup device by the driving mechanism is coordinate-converted and developed. 9. The image capturing apparatus according to claim 8, further comprising an image processing device that synthesizes the developed line images to generate continuous inner surface images of the subject. 10. The photographing apparatus according to claim 1, wherein an object that is wholly or partially cylindrical or conical is applied as a subject. 11. The object, which is an object having a polygonal tubular shape or a polygonal pyramid shape in whole or in part, is applied, and a polygonal pyramidal mirror is provided in place of the conical mirror. The imaging device according to any one of 9 to 9.