Optical elements (such as vari-focal lens component, vari-focal diffractive optical element and variable declination prism) and electronic image pickup unit using optical elements
First Claim
Patent Images
1. An optical element having a variable optical characteristic comprising:
- an optical element using a substance which has a variable refractive index and is dispersed in, polymers; and
a driving device which varies the refractive index of said substance.
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Accused Products
Abstract
An optical element which is capable of varying an optical characteristic thereof using a polymer dispersive liquid crystal and usable as a vari-focal lens element, a vari-focal diffractive optical element, a variable declination prism or the like.
30 Citations
48 Claims
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1. An optical element having a variable optical characteristic comprising:
- an optical element using a substance which has a variable refractive index and is dispersed in, polymers; and
a driving device which varies the refractive index of said substance. - View Dependent Claims (7, 24)
- an optical element using a substance which has a variable refractive index and is dispersed in, polymers; and
- 2. An optical element having a variable optical characteristic which uses a polymer dispersive liquid crystal.
- 3. A vari-focal diffractive optical element which uses a combination of a polymer dispersive liquid crystal and a diffractive optical element.
- 4. An optical element capable of varying a declination angle which uses a polymer dispersive liquid crystal.
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5. A vari-focal mirror which uses a polymer dispersive liquid crystal.
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6. A vari-focal lens element which uses a polymer dispersive liquid crystal.
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25. A vari-focal mirror comprising in order from a side of light incidence:
- a first optical member which has a first surface and a second surface;
a second optical member which has a third surface and a fourth surface;
a pair of electrodes disposed on said two of the surfaces;
a polymer dispersive liquid crystal layer interposed between said electrodes; and
means for applying an electric field to said polymer dispersive liquid crystal layer by way of said electrodes, wherein a reflective surface is disposed on said third or fourth surface so that an incident ray transmits repeatedly through said polymer dispersive liquid crystal layer a plurality of times.
- a first optical member which has a first surface and a second surface;
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26. A vari-focal mirror comprising in order from a side of light incidence:
- a transparent electrode;
a polymer dispersive liquid crystal layer;
an electrode; and
a reflective surface, wherein said vari-focal mirror comprises means for applying an electric field to said polymer dispersive liquid crystal layer and wherein said vari-focal mirror is configured to allow an incident ray to transmit repeatedly through said polymer dispersive liquid crystal layer a plurality of times.
- a transparent electrode;
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27. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to grind an outside diameter of material of a heterogeneous medium to an outside diameter of a finished lens element using a centerless grinder.
- View Dependent Claims (39)
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28. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to adjust deflection of an outer circumference of a material of a heterogeneous medium with a pick tester or a microscope; and
a step to grind an outside diameter of said material of the heterogeneous medium to an outside diameter of a finished lens element with said material kept fixed to a rotating shaft of a centering machine.
- a step to adjust deflection of an outer circumference of a material of a heterogeneous medium with a pick tester or a microscope; and
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29. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to form a curved surface having a desired shape on a material of a heterogeneous medium so that its center is nearly coincident with a center axis of a refractive index distribution; and
a step to grind an outer circumference of the material of the heterogeneous medium on which the curved surface has been formed using a bell clamp or a sider type centering machine until the outer circumference has an outside diameter of a finished lens element.
- a step to form a curved surface having a desired shape on a material of a heterogeneous medium so that its center is nearly coincident with a center axis of a refractive index distribution; and
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30. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to grind and polish a material of a heterogeneous medium so as to have a planar surface while keeping it in a condition where it is fixed to a jig in a direction perpendicular to a grinding direction.
- View Dependent Claims (31)
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32. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to fix a material of a heterogeneous medium which has an outside diameter larger than that of a lens element of a heterogeneous medium and a curved surface of a desired shape into a hole which has a diameter nearly equal to that of said material of the heterogeneous medium and is formed at a center of a fixture made of a glass, metal, resin or the like material, and grind and polish said material of the heterogeneous medium together with said fixture so as to form a curved surface of a desired shape.
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33. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to fix a material of a heterogeneous medium having a surface which has been ground into a first curved surface of a desired shape to a rotating shaft of a fixture having a curved surface of a shape which is the same as that of a second curved surface reverse to said first curved surface while adjusting deflection of an outer circumference with a pick tester or a microscope; and
a step to grind the second curved surface of said material of the heterogeneous medium into a curved surface of a desired shape with a curve generator.
- a step to fix a material of a heterogeneous medium having a surface which has been ground into a first curved surface of a desired shape to a rotating shaft of a fixture having a curved surface of a shape which is the same as that of a second curved surface reverse to said first curved surface while adjusting deflection of an outer circumference with a pick tester or a microscope; and
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34. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to form both ends of a material of a heterogeneous medium into curved surfaces of desired shapes respectively which have centers nearly coincident with a center axis of a refractive index distribution; and
a step to center the material of the heterogeneous medium on which said curved surfaces are formed by the bell clamp method.
- a step to form both ends of a material of a heterogeneous medium into curved surfaces of desired shapes respectively which have centers nearly coincident with a center axis of a refractive index distribution; and
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35. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to form both ends of a material of a heterogeneous medium into curved surfaces of desired shapes each of which has a center nearly coincident with a center axis of a refractive index distribution; and
a step to fix one of the curved surfaces of the material of the heterogeneous medium on which said curved surfaces are formed to a fixture having a curved surface of a shape which is the same as that of the other curved surface and center the material of the heterogeneous medium with a sider type centering machine while observing an image reflected by the other curved surface.
- a step to form both ends of a material of a heterogeneous medium into curved surfaces of desired shapes each of which has a center nearly coincident with a center axis of a refractive index distribution; and
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36. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to form, at both ends of a material of a heterogeneous medium, curved surfaces of desired shapes each of which has a center nearly coincident with a center axis of a refractive index distribution; and
a step to center the material of the heterogeneous medium on which said curved surfaces are formed with a sider type centering machine.
- a step to form, at both ends of a material of a heterogeneous medium, curved surfaces of desired shapes each of which has a center nearly coincident with a center axis of a refractive index distribution; and
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37. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to grind one surface of a material of a heterogeneous medium into a curved surface of a desired shape using a curve generator while keeping said material in a condition where it is fixed with a collet chuck.
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38. A manufacturing method of a lens element of a heterogeneous medium comprising:
- a step to form a surface of a material of a heterogeneous medium into a curved surface of a desired shape which has a center nearly coincident with a center axis of a refractive index distribution; and
a step to form the other surface into a curved surface of a desired shape using a curve generator while fixing the material of the heterogeneous medium with a collet chuck and supporting said curved surface with a pipe.
- a step to form a surface of a material of a heterogeneous medium into a curved surface of a desired shape which has a center nearly coincident with a center axis of a refractive index distribution; and
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40. A plate-like image pickup comprising:
- a transparent substrate; and
at least an image pickup device and an optical element which are disposed on surfaces of said transparent substrate, wherein said plate like image pickup unit has a function to pickup an image. - View Dependent Claims (44, 45, 46, 47, 48)
- a transparent substrate; and
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41. A plate-like image pickup unit which has a function to pickup an image comprising:
- a transparent substrate;
an image pickup device, and at least one of a diffractive optical element, a lens element having curved surfaces, a mirror and a free curved surface which are disposed on surfaces respectively of said transparent substrate. - View Dependent Claims (43)
- a transparent substrate;
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42. A plate-like image pickup unit having a function to pickup an image comprising:
- a transparent substrate;
a view finder using said transparent substrate;
an image pickup device; and
at least one of a diffractive optical element, a lens element having curved surfaces, a mirror and a free curved surface.
- a transparent substrate;
Specification