Optical element having a plurality of decentered reflecting curved surfaces, and optical instrument including the same
First Claim
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1. An integrally formed optical element, comprising:
- an incident surface into which light flux from an object enters;
a plurality of reflecting curved surfaces decentered one to the other from which the light flux entered from said incident surface is reflected, at least one of said plurality of reflecting curved surfaces being formed into a rotationally asymmetrical aspheric shape, wherein said shape has only one plane of symmetry; and
an emergent surface from which the light flux from said plurality of reflecting curved surfaces is emitted,wherein an antireflection film is applied onto at least one of said incident surface and said emergent surface, andwherein the light flux emitted from said emergent surface forms an image.
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Abstract
An integrally formed optical element includes an incident surface into which light flux from an object enters, a plurality of reflecting curved surfaces decentered one to the other from which the light flux entered from the incident surface is reflected and an emergent surface from which the light flux from the reflecting curved surfaces is emitted, wherein an antireflection film is applied onto the incident surface and the emergent surface, and wherein the light flux emitted from the emergent surface forms an image.
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Citations
13 Claims
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1. An integrally formed optical element, comprising:
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an incident surface into which light flux from an object enters; a plurality of reflecting curved surfaces decentered one to the other from which the light flux entered from said incident surface is reflected, at least one of said plurality of reflecting curved surfaces being formed into a rotationally asymmetrical aspheric shape, wherein said shape has only one plane of symmetry; and an emergent surface from which the light flux from said plurality of reflecting curved surfaces is emitted, wherein an antireflection film is applied onto at least one of said incident surface and said emergent surface, and wherein the light flux emitted from said emergent surface forms an image. - View Dependent Claims (2, 3, 4, 5, 12)
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6. An optical instrument comprising an integrally formed optical element, said optical element comprising:
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an incident surface into which light flux from an object enters; a plurality of reflecting curved surfaces decentered one to the other from which the light flux entered from said incident surface is reflected, at least one of said plurality of reflecting curved surfaces being formed into a rotationally asymmetrical aspheric shape, wherein said shape has only one plane of symmetry; and an emergent surface from which the light flux from said plurality of reflecting curved surfaces is emitted, wherein an antireflection film is applied onto at least one of said incident surface and said emergent surface, and wherein the light flux emitted from said emergent surface forms an image. - View Dependent Claims (7, 8, 9, 10, 11, 13)
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Specification