Stereoendoscope wherein images having passed through plural incident pupils are transmitted by common relay optical systems
First Claim
1. An endoscope comprising:
- an elongated inserted section;
an illuminating light projecting means projecting an illuminating light from the distal end side of said insertion section;
an objective optical system arranged on the distal end side of said insertion section, having at least two optical systems having plural pupils receiving the light from an object illuminated by said illuminating light and forming at least two images not equal to each other, said plural pupils being arranged so as not to be superimposed, and one image transmitting optical system arranged within said inserted section and having a single optical axis, transmitting said two images simultaneously, wherein said two optical systems have two optical axes not parallel with each other and form images different in the visual field direction from each other.
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Abstract
The illuminating light transmitted by the light guide inserted through the elongate inserted section is projected out of the distal end surface of the inserted section. The illuminated objects pass through the respective non-superimposed pupils of the two objective lens systems arranged in parallel within the distal end section of the inserted section and their images, which are not equal to each other are formed on the focal surface. The respective images are transmitted to the rear side by one common relay lens system having a single optical axis. The transmitted final images are formed respectively on the image taking surfaces of the image taking devices. The respective images photoelectrically converted by the respective image taking devices are processed to be signals, are displayed in the monitor and are stereo-inspected through shutter spectacles.
118 Citations
16 Claims
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1. An endoscope comprising:
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an elongated inserted section;
an illuminating light projecting means projecting an illuminating light from the distal end side of said insertion section;
an objective optical system arranged on the distal end side of said insertion section, having at least two optical systems having plural pupils receiving the light from an object illuminated by said illuminating light and forming at least two images not equal to each other, said plural pupils being arranged so as not to be superimposed, and one image transmitting optical system arranged within said inserted section and having a single optical axis, transmitting said two images simultaneously, wherein said two optical systems have two optical axes not parallel with each other and form images different in the visual field direction from each other.
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2. An endoscope, comprising:
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an objective optical system having plural visual field direction s and plural pupils corresponding to the visual field directions, the plural pupils being arranged so as not to be superimposed, and the objective optical system forming at least one object image;
a transmitting optical system for med to be of a size equal to or larger am the size of the plural pupils from the objective optical system and having a single optical axis, transmitting rearward the object image and said plural pupils from said objective optical system simultaneously. - View Dependent Claims (3, 4, 5, 6)
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7. An endoscope comprising:
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an objective optical system, said objective optical system having plural visual field directions and plural pupils corresponding to these visual field directions and formed so as not to be superimposed on each other and forming object images, and a transmitting optical system having a single optical axis and transmitting the object images and plural pupils from said objective optical system simultaneously;
wherein said objective optical system further comprises a front side optical system which receives beams in directions different from each other and projects said beams as plural substantially afocal beams arranged substantially in parallel along the optical axis of said transmitting optical system and a rear side optical system which has a single optical axis common with said transmitting optical system, converges the plural beams from said front side optical system and forms object images rearward, and wherein said image transmitting optical system transmits rearward the object images and plural pupils, and is formed to be of a size equal to or larger than the size of the plural pupils corresponding to the plural beams transmitted from said rear side optical system. - View Dependent Claims (8, 9, 10, 11)
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12. An endoscope comprising
an objective optical system having plural visual field directions and plural pupils corresponding to said plural visual field directions; - and
a transmitting optical system having a single optical axis, wherein said objective optical system comprises a front side optical system including plural pupils receiving respectively plural beams in directions different from each other and a prism optical system varying at least one of said beams and converting the respective beams to beams directed in substantially the same direction and a rear side optical system forming object images made of plural beams from said front side optical system in substantially the same position, and wherein said transmitting optical system transmits rearward the object images and plural pupils from said rear side optical system simultaneously.
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13. An endoscope comprising:
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an objective optical system having plural visual field directions and plural pupils corresponding to said plural visual field directions, and a transmitting optical system having a single optical axis, wherein said objective optical system has a front side optical system including plural lenses having optical axes in directions different from each other and a prism optical system receiving the respective beams having passed through said plural lenses and converting said beams to plural beams arranged substantially in parallel along the optical axis of said transmitting optical system and a rear side optical system having a size including the beams projected out of said front side optical system and having a single axis and having a convergence for projected rays to simultaneously form images of the plural beams, and wherein said transmitting optical system transmits rearward the object images and plural pupils from said rear side optical system simultaneously. - View Dependent Claims (14, 15)
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16. An endoscope comprising:
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an objective optical system; and
a transmitting optical system, wherein said transmitting optical system has a single optical axis, wherein said objective optical system further comprises a front side optical system including a lens having a negative refractive power and a rear side optical system including a lens having a positive refractive power. and has a convergence, wherein said front side optical system includes plural lenses having optical axes in directions different from each other and a prism receiving beams in directions different from each other and converting said beams to plural beams arranged substantially in parallel with the single optical axis of said transmitting optical system, and wherein said rear side optical system has a size including the beams projected out of said front side optical system, and has a single optical axis. and forms images of objects of said plural beams simultaneously through said transmitting optical system on an image surface.
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Specification