Variable optical-property element
An optical apparatus includes a variable optical-property element to change its optical properties by applying an electric or magnetic field or temperature to a liquid crystal. In this way, the optical apparatus is reduced in thickness, and can be used in a cam era, a microscope, etc.
1. A variable optical-property element comprising
a mirror substrate; and
a coil,
wherein the mirror substrate is deformed by an electromagnetic force generated at the coil.
2. A variable optical-property element according to claim 1 , comprising a permanent magnet, wherein the mirror substrate is deformed by an electromagnetic force generated between the coil and the permanent magnet.
3. A variable optical-property element comprising:
a mirror substrate; and
a control device that controls a shave of the mirror substrate, wherein a ferroelectric is used in at least one region of the mirror substrate, and the control device controls the shape of the mirror substrate by a plurality of voltages or currents.
4. A variable optical-property element according to claim 2 , wherein the coil is formed on the mirror substrate.
5. A variable optical-property element according to claim 1 , comprising a plurality of the coils.
6. A variable optical-properly element comprising:
a mirror substrate; and
a coil,
wherein a ferroelectric is used in at least one region of the mirror substrate.
7. A variable optical-property element according to claim 6 , wherein the coil is arranged to oppose the mirror substrate.
8. A variable optical-property element comprising a mirror substrate, wherein an organic substance or a synthetic resin is used in at least one region of the mirror substrate, and a surface shape of the mirror substrate is deformable into a rotationally asymmetric shape.
9. A variable optical-property element according to claim 8 , wherein the rotationally asymmetric shape is a free-formed surface defining only one plane of symmetry.
10. A variable optical-property element according to claim 8 , comprising at least one electrode unit having a plurality of electrodes.
11. A variable optical-property element comprising:
a mirror substrate; and
at least one electrode unit having a plurality of electrodes,
wherein the mirror substrate is arranged in such a manner that an axis of incident light and an axis of emergent light lie only in one plane,
wherein a mirror surface of the minor substrate is deformable into a rotationally asymmetric shape, and
wherein a deformation of the mirror substrate is caused by an electrostatic force.
12. A variable optical-property element comprising a mirror substrate, wherein a material that is expansible and contractible by electricity is used in at least a part of the mirror substrate, and a mirror surface of the mirror substrate is shaped to have a length in one direction longer than a length in another direction.
13. A variable optical-property element comprising a mirror substrate having a reflecting surface, wherein a material that is expansible and contractible by electricity is used in at least a part of the mirror substrate, and the mirror substrate is arranged in such a manner that an axis of incident light and an axis of emergent light lie only in one plane.
14. A variable optical-property element comprising a mirror substrate, wherein a material that is expansible and contractible by electricity is used in at least a part of the mirror substrate, and a surface shape of the mirror substrate is deformable into a rotationally asymmetric shape.
15. A variable optical-property element comprising:
a mirror substrate; and
at least one electrode unit having a plurality of electrodes,
wherein a material that is expansible and contractible by electricity is used in at least a part of the mirror substrate.
16. A variable optical-property element according to claim 15 , wherein a size of the mirror substrate is equal to or smaller than 7 cm.
17. A variable optical-property element according to claim 15 , wherein the mirror substrate is driven by a plurality of voltages.
18. A variable optical-property element comprising:
a mirror substrate; and
a driving source that generates a plural kinds of driving forces,
wherein a surface shape of the mirror substrate is deformable into a rotationally asymmetric shape.
19. A variable optical-property element comprising a mirror substrate, wherein driving forces include an electrostatic force and an expansion or contraction of a material by electricity.
20. A variable optical-property element according to claim 2 , wherein the permanent magnet is formed on the mirror substrate.