JP2001008893A - Probe for oral cavity television camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily hold a focal point when photographing an oral cavity with an oral cavity television camera. SOLUTION: A support lug 3 is disposed on the bottom face section 2 of a transparent tubular body 1 closed at one end. The support lug 3 is formed into a nearly cubical shape or a nearly cylindrical shape, and it is disposed at the front of the bottom face section 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to photographing the inside of an oral cavity with a small television camera, and more particularly to an apparatus having a function of holding a focal point of a probe of an oral television camera.

[0002]

2. Description of the Related Art Conventionally, a probe for this kind of oral television camera has been provided as a waterproof cover for protecting the camera from moisture as shown in FIG.

[0003]

There is always some focal length from the lens of the television camera to the object to be photographed.
The conventional waterproof cover does not have a device having a function of maintaining the focal length position, and thus has a problem that it is difficult to hold the focal position manually in the air at all times.

[0004]

In order to solve the above-mentioned problems, a probe for an oral television camera according to the present invention is provided with a support projection provided on a bottom surface of a transparent tubular body having one end closed. .

[0005] The support projection is formed substantially in a cube,
You may provide in front of a bottom part.

For the same purpose, the support projection may be formed in a substantially cylindrical body.

[0007]

The tip of the supporting projection is in contact with the object to be photographed and keeps the focal point.

[0008] Then, the support projection is formed substantially in a cube,
In the one provided in front of the bottom surface, the tip of the support protrusion comes into contact with the imaging target in a planar manner.

Similarly, the support projection is formed in a substantially cylindrical body,
The front end of the support projection of the one provided in front of the bottom surface portion comes into planar contact with the imaging target.

[0010]

An embodiment will be described with reference to the drawings. In FIG. 1, the probe of the oral television camera is formed of a plastic such as a transparent acrylic resin, and is formed into a cylindrical body having a thin wall and one end closed by injection molding or blow molding. . More specifically, a wedge-shaped support projection (3) is provided on a bottom surface (2) of a cylindrical body (1) having a substantially square cross section.
In FIG. 4, when the oral television camera (9) is inserted into the cylindrical body (1), the tip of the support projection (3) is in contact with the tooth (8) to be photographed and maintains the focal point. are doing.

In FIG. 2, the support projection (4) may be formed in a substantially cubic shape in front of the bottom portion (2). In this case, as shown in FIG. 5, the surface facing the bottom surface (2) of the substantially cuboid comes in contact with the object to be photographed.

In FIG. 3, the support projection may be a substantially cylindrical body (5).

[0013]

Since the present invention is configured as described above, the following effects can be obtained.

In the probe of the oral television camera,
Since the support projection provided on the bottom surface is in close contact with the object to be photographed, the photographing can be stably performed while maintaining the focal point position.

When the support projection is formed in a substantially cubic shape in front of the bottom surface, the surface of the substantially cubic surface facing the bottom surface comes into planar contact with the object to be photographed. Therefore, the photographing can be stably performed while maintaining the in-focus position.

The same effect can be obtained with the support projection formed in a substantially cylindrical body in front of the bottom surface.

[Brief description of the drawings]

FIG. 1 is a perspective view from below showing the probe of the oral television camera by an outer line.

FIG. 2 is a perspective view from below showing a probe of the oral television camera in which a support protrusion is formed in a substantially cubic shape in front of a bottom surface portion by an outer line.

FIG. 3 is a perspective view from below showing the probe of the oral television camera in which a support protrusion is formed in a substantially cylindrical body in front of a bottom surface portion by an outer line.

FIG. 4 is a cross-sectional view of a case where a probe is attached to an oral television camera and is used with a support protrusion serving as a fulcrum.

FIG. 5 is a cross-sectional view of a case in which a probe having a support protrusion formed in a substantially cubic shape in front of a bottom portion is attached to an oral television camera and used in contact with an object to be photographed.

FIG. 6 is a perspective view of the conventional waterproof cover as viewed from below, represented by outer lines.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Bottom part 3 Support protrusion 4 Support protrusion 5 Support protrusion 6 Photographing lens 7 Imaging CCD 8 Teeth 9 Oral TV camera 10 Waterproof cover

Claims (2)

[Claims] 1. A probe for an oral television camera comprising a transparent cylindrical body (1) having one end closed and a support projection (3) provided on a bottom surface (2). 2. The probe for an oral television camera according to claim 1, wherein a support projection (4) formed in a substantially cubic shape is provided in front of the bottom portion (2).