ENDOSCOPE AND ENDOSCOPE SYSTEM
First Claim
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1. An endoscope system, comprising:
- a first endoscope that includes a first observation optical system with a first viewing angle; and
a second endoscope that includes a second observation optical system with a second viewing angle wider than the first viewing angle, a second distance from a second distal end face of an insertion portion of the second endoscope to a minimum focal point of the second observation optical system being shorter than a first distance from a first distal end face of a distal end portion of the first endoscope to a minimum focal point of the first observation optical system.
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Abstract
An endoscope system includes a first endoscope that includes a first observation optical system with a first viewing angle; and a second endoscope that includes a second observation optical system with a second viewing angle wider than the first viewing angle. A second distance from a second distal end face of an insertion portion of the second endoscope to a minimum focal point of the second observation optical system is shorter than a first distance from a first distal end face of a distal end portion of the first endoscope to a minimum focal point of the first observation optical system.
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Citations
7 Claims
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1. An endoscope system, comprising:
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a first endoscope that includes a first observation optical system with a first viewing angle; and
a second endoscope that includes a second observation optical system with a second viewing angle wider than the first viewing angle, a second distance from a second distal end face of an insertion portion of the second endoscope to a minimum focal point of the second observation optical system being shorter than a first distance from a first distal end face of a distal end portion of the first endoscope to a minimum focal point of the first observation optical system. - View Dependent Claims (2, 3, 4, 5)
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6. An endoscope comprising:
an observation optical system with a predetermined viewing angle, a distance from a distal end of the observation optical system to a near limit of a depth of field of the observation optical system being longer than a distance from a distal end of an observation optical system of other endoscope to a near limit of a depth of field of the other endoscope, the other endoscope having a viewing angle wider than the predetermined viewing angle. - View Dependent Claims (7)
Specification