Endoscope optical system and endoscope
First Claim
1. An endoscope optical system comprising:
- a first prism that deflects light incident along an incident optical axis in a direction along a first axis perpendicular to the incident optical axis and emits the light;
a second prism having two reflecting faces that fold back the light emitted from the first prism along a second axis separated from the first axis by a gap; and
a third prism that deflects the light folded back by the second prism in a direction perpendicular to the first axis and along a plane including the incident optical axis,wherein the first prism is provided so as to be capable of swiveling about the first axis relative to the second prism, andthe two reflecting faces of the second prism are disposed to form an obtuse angle therebetween.
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Accused Products
Abstract
Provided is an endoscope optical system including first deflecting means that deflects light incident along an incident optical axis in a direction along a first axis perpendicular to the incident optical axis and emits the light; second deflecting means having two reflecting faces that fold back the light emitted from the first deflecting means along a second axis separated from the first axis by a gap; and third deflecting means that deflects the light folded back by the second deflecting means in a direction perpendicular to the first axis and along a plane including the incident optical axis, wherein the first deflecting means is provided so as to be capable of swiveling about the first axis relative to the second deflecting means, and the two reflecting faces of the second deflecting means are disposed to form an obtuse angle therebetween.
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Citations
26 Claims
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1. An endoscope optical system comprising:
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a first prism that deflects light incident along an incident optical axis in a direction along a first axis perpendicular to the incident optical axis and emits the light; a second prism having two reflecting faces that fold back the light emitted from the first prism along a second axis separated from the first axis by a gap; and a third prism that deflects the light folded back by the second prism in a direction perpendicular to the first axis and along a plane including the incident optical axis, wherein the first prism is provided so as to be capable of swiveling about the first axis relative to the second prism, and the two reflecting faces of the second prism are disposed to form an obtuse angle therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An endoscope optical system comprising:
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a first prism that deflects light incident along an incident optical axis in a direction along a first axis that intersects the incident optical axis and emits the light; a second prism having two reflecting faces that fold back the light emitted from the first prism along a second axis separated from the first axis by a gap and perpendicular to the incident optical axis; and a third prism that deflects the light folded back by the second prism in a direction perpendicular to the second axis and along a plane including the incident optical axis, wherein the first prism and the second prism are provided so as to be capable of swiveling about the second axis relative to the third prism, and the two reflecting faces of the second prism are disposed to form an obtuse angle therebetween. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An endoscope optical system comprising:
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first deflecting means that deflects light incident along an incident optical axis in a direction along a first axis perpendicular to the incident optical axis and emits the light; second deflecting means having two reflecting faces that fold back the light emitted from the first deflecting means along a second axis separated from the first axis by a gap; and third deflecting means that deflects the light folded back by the second deflecting means in a direction perpendicular to the first axis and along a plane including the incident optical axis, wherein the first deflecting means is provided so as to be capable of swiveling about the first axis relative to the second deflecting means, and the two reflecting faces of the second deflecting means are disposed to form an obtuse angle therebetween.
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26. An endoscope optical system comprising:
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first deflecting means that deflects light incident along an incident optical axis in a direction along a first axis intersecting the incident optical axis and emits the light; second deflecting means having two reflecting faces that fold back the light emitted from the first deflecting means along a second axis separated from the first axis by a gap and perpendicular to the incident optical axis; and third deflecting means that deflects the light folded back by the second deflecting means in a direction perpendicular to the second axis and along a plane including the incident optical axis, wherein the first deflecting means and the second deflecting means are provided so as to be capable of swiveling about the second axis relative to the third deflecting means, and the two reflecting faces of the second deflecting means are disposed to form an obtuse angle therebetween.
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Specification