JPH09113821A - Endoscopic photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pick up the other information except one endoscopic image such as information other than the endoscopic image and a second endoscopic image for stereoscopic vision. SOLUTION: A photographing optical system 22 for forming an image of an endoscopic image and photographing it on a positive film 23 and an information photographing optical system 25 for photographing character information, etc., other than the endo-scopic image are provided in an endoscopic camera for photographing an endoscopic image by mounting it on an endoscope. When the positive film 23 is located in the photographing state, the optical axis of the photographing optical system 22 is arranged being eccentric to the left side of the center axis of an effective photographing range 27 of the film indicating the size of a photosensitive area 26 for one frame and, on the other hand, the optical axis of the information photographing optical system 25 is arranged being eccentric to the right side of the center axis of the effective photographing range 27. By this constitution, since the endoscopic image 55 is photographed by being eccentric to the left side of the center of the effective photographing range 27, a larger space for photographing character information is secured and many pieces of information other than the endoscopic image are photographed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope photographing apparatus for photographing an endoscopic image on a positive film or the like.

[0002]

2. Description of the Related Art In recent years, endoscopes provided with an optical observation means at the tip of an elongated insertion portion have been widely used in the medical field and the like. In the case of observing the inside of a body cavity using an endoscope, generally, a fiberscope is used to make a naked eye observation from an eyepiece portion, or an electronic endoscope equipped with an image pickup element is used to pick up an observation image and a TV monitor or the like. The diagnosis of the region to be inspected is performed by displaying the image on the display, or by attaching a photographing device equipped with a camera to the endoscope to photograph an observation image and projecting the photographed film.

As a photographing device used for an endoscope, Japanese Patent Laid-Open No. 6-90897 discloses a technique of photographing an endoscopic image on a positive film and magnetically recording information relating to the endoscopic image on this film. An endoscope information recording device capable of performing is disclosed.

In the conventional endoscope photographing apparatus, the optical axis of the optical system for photographing the endoscopic image coincides with the center of the effective photographing range of the film, and the obtained endoscopic image is in the effective photographing range of the film. It was supposed to be photographed in the center.

[0005]

As described above, in the conventional endoscope photographing apparatus, since the endoscopic image is photographed in the center of the effective photographing range of the film, information other than the endoscopic image is taken. There was not enough space to capture the image, and it was not possible to capture multiple information in one frame of the film.

The present invention has been made in view of these circumstances, and captures information other than one endoscopic image, such as information other than an endoscopic image or a second endoscopic image for stereoscopic viewing. It is an object of the present invention to provide an endoscopic imaging device capable of performing the above.

[0007]

An endoscope photographing apparatus according to the present invention is an endoscope photographing apparatus for photographing a subject image obtained by an endoscope, using a film having a horizontally long photographing effective range. When the film is in the shooting state,
The optical axis of the photographing optical system is arranged so as to be eccentric to the left or right from the center of the effective photographing range of the film, and with the above configuration, it is eccentric to the right or left from the center of the effective photographing range of the film. Since one endoscopic image is captured, a larger space is secured for capturing information other than the endoscopic image.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 relate to a first embodiment of the present invention, FIG. 1 is a configuration explanatory view showing an overall configuration of an endoscope imaging apparatus, and FIG. 2 is a plan view showing a rear surface of an endoscope camera. 3 is a block diagram showing the configuration of the control system of the endoscope camera, FIG. 4 is a perspective view showing the arrangement of the film and the photographing optical system, and FIG. 5 is a constitutional explanation showing the positional relationship of the optical axes of the photographing optical system. It is a figure.

As shown in FIG. 1, an endoscope photographing apparatus 1 according to the present embodiment comprises an optical endoscope 2, an endoscope camera 3 mounted on the endoscope 2, and an endoscope. 2 and a light source device 4 for supplying illumination light.

The endoscope 2 includes an elongated and flexible insertion portion 6,
It is composed of an operating section 7 provided with a bending knob, a light guide cable 8 extending from the operating section 7, and an eyepiece section 9 formed at the rear end (top) of the operating section 7. There is.

A light guide 11 for transmitting illumination light is inserted through the insertion portion 6 and the light guide cable 8.
By connecting the connector 12 at the end of the light guide cable 8 to the light source device 4, the illumination light of the illumination lamp 13 in the light source device 4 is applied to the end face of the light guide 11 on the connector side. The illumination light applied to this end face is transmitted by the light guide 11 and is emitted forward from the emission end face fixed to the illumination window of the distal end portion 14 of the insertion portion 6, and the object 1
Illuminate 5.

The illuminated object 15 has a tip portion 14
An optical image is formed on the focal plane of the objective lens 16 attached to the observation window. An end face of the image guide 17 for transmitting an optical image is arranged and fixed on this focal plane, and the optical image of this end face is transmitted to the end face on the eyepiece 9 side.

Facing the end face of the image guide 17,
An eyepiece lens 18 is attached to the eyepiece window of the eyepiece unit 9, and the operator can magnify and observe the optical image transmitted from the eyepiece window, that is, the endoscope image, through the eyepiece lens 18. Further, the endoscope camera 3 can be detachably attached to the eyepiece unit 9.

The endoscope camera 3 is provided with a photographing optical system 22 for taking a photograph on the lens barrel portion 21, and a mount mechanism (not shown) which can be mounted on the eyepiece 9 at the tip. Is provided. A positive film (reversal color film) 2 is provided on the main body of the endoscope camera 3.
3 is detachably loaded.

As shown in FIG. 2, a release switch R for performing a release operation is provided on the upper surface of the endoscope camera 3.
S, a frame feed switch KS for feeding (winding) the film surface by one frame, and a rewinding switch MS for rewinding are provided. In addition, the endoscope camera 3
On the back surface side of the character generator 34, which is adjacent to the finder 33 and serves as information input means for inputting information other than the endoscopic image recorded on the positive film 23, for example.
Is provided. Further, for example, a data display unit 35 is provided below the finder 33 so that data input by the character generator 34 can be confirmed.

FIG. 3 shows the configuration of the control system of the endoscope camera 3.

The control system of the endoscope camera 3 includes a microprocessor 41 for controlling the entire endoscope camera 3, a ROM 42 in which a program is written, a release switch RS, a frame feed switch KS, and a rewind switch MS. , A photometric circuit 4 for photometry to take a picture with an appropriate exposure amount
3, a shutter control circuit 44 for controlling the shutter speed, a character generator 34, an ISO reading means 46 for reading ISO information representing the sensitivity of the positive film 23 formed by a light and dark pattern on the surface of the cartridge 45 for housing the positive film 23, Motor drive circuit 49 for feeding the positive film 23, character generator 3
4, a signal conversion circuit 50 that converts a signal input by the operation of 4 and outputs the converted signal to the data display unit 35, and an information display 29 that displays character information for shooting and recording, and the like. It is connected to each part.

The microprocessor 41 has a RAM 41a.
It is possible to temporarily store the information input from the character generator 34 or the like. Further, it also has a connector section for connecting an external character generator (not shown) other than the character generator 34 provided in the endoscope camera 3 to the microprocessor 41 to input information.

4 and 5 show the arrangement of the photographing optical system.

The endoscope camera 3 is provided with a photographing optical system 22 for photographing an endoscopic image and an information photographing optical system 25 for photographing character information other than the endoscopic image. As shown in FIG. 4, a part of the positive film 23 has optical image recording regions (photosensitive regions) 26 that are exposed to light and are formed in rows. The photosensitive region 26 of the positive film 23 can generate a positive image by performing reversal development.

Behind the information photographing optical system 25, there is a mirror 2
An information display 29 is provided via the display unit 8 so that the information photographing optical system 25 forms an image on the positive film 23 by the information photographing optical system 25 based on the character information displayed on the information display 29. Has become.

The optical axis 57 of the photographing optical system 22 indicates the size of the photosensitive area 26 for one frame when the positive film 23 is in the photographing state, and the effective photographing range 27 of the film.
It is arranged eccentrically to the left of the central axis 58 of the. The optical axis 59 of the information photographing optical system 25 is arranged eccentrically to the right of the central axis 58 of the effective photographing range 27 of the film.

Therefore, the photosensitive area 26 of the positive film 23 is
, An optical image of the object 15 is formed as an endoscopic image 55 by the photographic optical system 22 on the left half, and the information photographic optical system 25 is formed on the right half on the side of the endoscopic image 55.
The information displayed on the information display 29 is imaged as the character information 56.

Character information 56 associated with the endoscopic image 55
When recording, first, the character generator 34
Perform the operation to input medical record information etc. that should be recorded. Information is temporarily stored in the RAM 41a by the operation of inputting the information, and the information stored in the RAM 41a is displayed on the data display unit 35. Then, the operator issues a command corresponding to record OK to the character generator 3
When input from 4 or the like, the information stored in the RAM 41a is displayed on the information display display 29.

While the positive film 23 is fed frame by frame, the optical image of the object 15 obtained by the endoscope 2 is formed by the photographing optical system 22 on the left half of the photosensitive area 26 of the positive film 23. , The information displayed on the information display 29 is exposed by the information photographing optical system 25 to the photosensitive area 2.
An image is formed in the right half of 6, and an endoscopic image 55 and character information 56 are taken.

At this time, the microprocessor 41 operates the RO
When the operator operates the frame feed switch KS and the rewind switch MS based on the control program written in M42, the motor connected by the motor drive circuit 49 to the winding section 51 for winding the positive film 23. 5
A drive signal is supplied to the motor 2, and the motor 52 is normally or reversely rotated to wind and rewind the positive film 23. Further, when the release switch RS is operated, the exposure amount and the shutter speed are controlled by the photometric circuit 43 and the shutter control circuit 44, and photographing is performed.

As described above, in the present embodiment, in the photosensitive area 26 of the positive film 23, the endoscopic image is projected on the left side area of the effective photographing range 27.
The right side area of the effective imaging range 27 is largely vacant, and it is possible to imprint more information on the endoscopic image such as the patient name as information other than the endoscopic image in this area. Therefore, it is possible to capture and record the endoscopic image and other information related to the endoscopic image within one effective photographing range.

FIGS. 6 and 7 relate to the second embodiment of the present invention. FIG. 6 is a structural explanatory view showing the overall constitution of the endoscope photographing apparatus, and FIG. 7 shows the arrangement constitution of the film and the photographing optical system. It is a perspective view shown.

The second embodiment is a structural example of an apparatus for recording a stereoscopic image by imprinting a plurality of endoscopic images on one frame of a positive film.

The endoscope photographing apparatus 71 of the present embodiment comprises an optical stereoscopic endoscope 72, an endoscope camera 73 mounted on the stereoscopic endoscope 72, and a stereoscopic endoscope. The light source device 4 that supplies illumination light to the light source 72.

The stereoscopic endoscope 72 has a light guide 11 for transmitting illumination light and two image guides 75 for transmitting left and right images having a parallax in an elongated and flexible insertion portion 74.
And are inserted. Two objective lenses 77 for forming left and right images are provided in the observation window of the distal end portion 76 of the insertion section 74, and the left and right optical images formed by these objective lenses 77 are respectively guided by the image guide 75. The signal is transmitted to the eyepiece 79 provided at the rear end of the operation unit 78.

Facing the end face of the image guide 75,
Two sets of eyepieces 80 are attached to the eyepiece window of the eyepiece unit 79, and the operator receives the left and right optical images having parallax transmitted from the eyepiece window through the eyepiece lens 80 as a stereoscopic endoscope image. Can be magnified and observed.

Two sets of taking optical systems 82 for taking photographs corresponding to the eyepieces 80 are attached to the lens barrel portion 81 of the endoscope camera 73. As shown in FIG. 7, the photographing optical system 82 includes first and second photographing optical systems 82a and 82b arranged side by side.

The optical axis of the first photographing optical system 82a is arranged eccentrically to the left of the center axis of the photographing effective range 27 of the film showing the size of the photosensitive area 26 for one frame, and the second photographing optical system 82a is arranged. The optical axis 82b is eccentrically arranged to the right of the central axis of the effective shooting area 27 of the film.

Therefore, the photosensitive area 26 of the positive film 23 is
In the left half, one optical image of the object 15 is imaged as a first endoscopic image 85a by the first photographic optical system 82a and is photographed, and a side portion of the first endoscopic image 85a is captured. On the right half, the object 1
The other optical image of 5 is formed as a second endoscopic image 85b and photographed.

The structure of the other parts is the same as that of the first embodiment, and the description thereof is omitted.

As described above, in the present embodiment, two images are imaged by shifting left and right within the effective photographing range,
Multiple in one film shooting effective range (two here)
It is possible to capture an endoscopic image of, and it is possible to capture and record a stereoscopic image.

According to each of the embodiments described above, information other than the first endoscopic image, that is, information such as patient information relating to the endoscopic image, is included in one film photographing effective range.
Alternatively, more information such as a second endoscopic image for stereoscopic viewing can be captured and recorded.

[Additional Notes] (1) In an endoscope photographing apparatus for photographing a subject image obtained by an endoscope by using a film having a horizontally long photographing effective range, when the film is positioned in a photographing state,
An endoscope photographing apparatus, wherein the optical axis of a photographing optical system is arranged so as to be eccentric to the left or right from the center of the effective photographing range of the film.

(2) In an endoscope photographing apparatus for photographing a subject image obtained by an endoscope using a film having a horizontally long photographing effective range, when the film is in a photographing state, A first photographing optical system for photographing an endoscopic image is arranged so that an optical axis of the first photographing optical system is eccentric to the left or right with respect to a central portion of the photographing effective range of the film, and a second endoscopic image or other information is photographed. An endoscope photographing apparatus, wherein the optical axis of the second photographing optical system is arranged so as to be decentered in a direction opposite to the first photographing optical system from a central portion of a photographing effective range of the film.

(3) As the photographic optical system, there is provided a first photographic optical system for photographing an endoscopic image and a second photographic optical system for photographing other information including character information, and the film is The optical axis of the first photographing optical system is arranged so as to be eccentric to the left or right with respect to the center of the effective photographing range of the film when positioned in the photographing state, and the optical axis of the second photographing optical system is The endoscopic imaging apparatus according to appendix 1, wherein the endoscopic imaging apparatus is arranged so as to be decentered in a direction opposite to the first photographing optical system from a central portion of a photographing effective range of the film.

(4) As the photographing optical system, a first photographing optical system for photographing a first endoscopic image for stereoscopic vision,
A second photographing optical system for photographing a second endoscopic image,
When the film is placed in a photographing state, the optical axis of the first photographing optical system is arranged so as to be eccentric to the left or right with respect to the central portion of the photographing effective range of the film. The endoscope photographing apparatus according to appendix 1, wherein the optical axis is arranged so as to be decentered in a direction opposite to the first photographing optical system from a central portion of a photographing effective range of the film.

[0043]

As described above, according to the present invention, it is possible to capture information other than one endoscopic image, such as information other than the endoscopic image and the second endoscopic image for stereoscopic viewing. There is an effect that it is possible to provide an endoscope imaging apparatus capable of

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram showing an overall configuration of an endoscope imaging apparatus according to a first embodiment.

FIG. 2 is a plan view showing the rear surface of the endoscope camera.

FIG. 3 is a block diagram showing a configuration of a control system of an endoscope camera.

FIG. 4 is a perspective view showing an arrangement configuration of a film and a photographing optical system according to the first embodiment.

FIG. 5 is a structural explanatory view showing a positional relationship of optical axes of the photographing optical system according to the first embodiment.

FIG. 6 is a configuration explanatory view showing an overall configuration of an endoscope imaging apparatus according to a second embodiment.

FIG. 7 is a perspective view showing an arrangement configuration of a film and a photographing optical system according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscopic imaging device 2 ... Endoscope 3 ... Endoscope camera 22 ... Photographing optical system 23 ... Positive film 25 ... Information photographing optical system 26 ... Photosensitive area 27 ... Effective photographing range 29 ... Information display 34 ... Character generator 41 ... Microprocessor 55 ... Endoscopic image 56 ... Character information

Claims (1)

[Claims] 1. An endoscope photographing apparatus for photographing a subject image obtained by an endoscope by using a film having a horizontally long photographing effective range, wherein the photographing optical system of the photographing optical system is used when the film is in a photographing state. An endoscopic photographing apparatus, wherein the optical axis is arranged so as to be eccentric to the left or right of the center of the effective photographing range of the film.