Optical device and optical apparatus including same
AssigneeCanon Kabushiki Kaisha
InventorsNaoki Kobayashi, Shoichi Shimura, Kazuhiro Oki
Life of this patent
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Abstract
An optical device functioning as a variable apex angle prism and suitable to be incorporated in an image stabilizing apparatus for an optical apparatus is constituted by a pair of transparent circular plates disposed oppositely spaced from each other, a connecting member attached to the circular plates so as to define a closed space in combination with the circular plates and deformable under application of an external drive force, and a transparent substance disposed within the closed space. The transparent substance comprises at least one compound selected from the group consisting of polyether-modified organopolysiloxane, polyether alcohol-modified organopolysiloxane and fluorine-containing compounds.
Claims26
An optical device, comprising:
- a pair of transparent plates disposed oppositely spaced from each other, a connecting member attached to the transparent plates so as to define a closed space in combination with the transparent plates and deformable under application of an external drive force, and a transparent substance disposed within the closed space;
- wherein said transparent substance is liquid at room temperature and comprises at least one compound selected from the group consisting of polyether-modified organopolysiloxane, polyether alcohol-modified organopolysiloxane and fluorine-containing compounds.
An image stabilizing apparatus for an optical apparatus having an image forming means for focusing on an object along a collimation axis, comprising:
- an optical device comprising a pair of optically transparent plates disposed oppositely spaced apart from each other across the collimation axis of the optical apparatus, a connecting member attached to the transparent plates so as to define a closed space in combination with the transparent plates and a transparent substance filling the closed space, said transparent substance being liquid at room temperature and comprising at least one compound selected from the group consisting of polyether-modified organopolysiloxane, polyether alcohol-modified organopolysiloxane and fluorine-containing compounds;
- detection means for responding to an angular movement and detecting the magnitude and azimuth of the angular movement;
- and
- drive means for driving the transparent plates to incline the transparent plates relative to each other in any direction with respect to the collimation axis so as to correct a displacement of an image on a focal plane in response to measured data from the detection means.
An optical apparatus, comprising:
- an image forming means for focusing on an object along a collimation axis, and
- an image stabilizing apparatus disposed in front of the image forming means with respect to a side of light incidence;
- said image stabilizing apparatus including:
- an optical device comprising a pair of optically transparent plates disposed oppositely spaced apart from each other across the collimation axis of the optical apparatus, a connecting member attached to the transparent plates so as to define a closed space in combination with the transparent plates and a transparent substance filling the closed space, said transparent substance comprising at least one compound selected from the group consisting of polyether-modified organopolysiloxane, polyether alcohol-modified organopolysiloxane and fluorine- containing compounds;
- detection means for responding to an angular movement and detecting the magnitude and azimuth of the angular movement;
- and
- drive means for driving the transparent plates to incline the transparent plates relative to each other in any direction with respect to the collimation axis so as to correct a displacement of an image on a focal plane in response to measured data from the detection means.
Dependencies are inferred from the claim text.