Optical apparatus
First Claim
1. An optical apparatus having an optical system provided with a variable optical-property element, wherein a function of ray deflection of the variable optical-property element is changed in accordance with a change of an area of an object corresponding to an image to be used so that aberration of the optical system is optimized.
2 Assignments
0 Petitions
Accused Products
Abstract
An optical apparatus has an imaging optical system provided with a deformable mirror and an electronic zoom function that an image recorded in an image sensor by the imaging optical system is magnified by image processing. A ray deflecting function of the deformable mirror is changed in accordance with a change of an object area corresponding to an image to be used, and aberration of the imaging optical system is optimized. The deformable mirror is controlled by an arithmetical unit connected to an image processor and a driving circuit. The electronic zoom is performed with respect to the image recorded in the image sensor through a signal processing circuit and the image processor, and when the image is displayed on a display device, the deformable mirror is deformed so that sharpness at nearly the center of an object image formed on the image sensor is improved. This offers the optical apparatus in which a compact design is achieved, the magnification of the optical system can be changed, and the sharpness of the image is high even when a variable magnification ratio is increased.
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Citations
32 Claims
- 1. An optical apparatus having an optical system provided with a variable optical-property element, wherein a function of ray deflection of the variable optical-property element is changed in accordance with a change of an area of an object corresponding to an image to be used so that aberration of the optical system is optimized.
- 2. An optical apparatus having a variable optical-property element, a driving circuit driving the variable optical-property element, and an electronic zoom function.
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4. An optical apparatus which is capable of changing a magnification, having an optical system provided with a variable optical-property element, wherein a function of ray deflection of the variable optical-property element is changed in accordance with a magnification change of the optical system and thereby aberration of the optical system varied in accordance with the magnification change is optimized.
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5. An optical apparatus having an optical system provided with a plurality of combined optical units, wherein one of the optical units has a variable optical-property element and a function of ray deflection of the variable optical-property element is changed in accordance with a change of a combination of the optical units so that aberration of the optical system varied in accordance with a change of the function of ray deflection is optimized.
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6. An optical apparatus having an optical system provided with a plurality of optical units, wherein one of the optical units has a variable optical-property element and a function of ray deflection of the variable optical-property element is changed in accordance with a magnification change of the optical system so that aberration of the optical system varied in accordance with the magnification change is optimized.
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12. An optical apparatus having an optical system provided with an electronic zoom function, wherein a part of the optical system is changed when electronic zoom is performed, and thereby sharpness of an image in an area of the image to be used is improved.
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13. An optical apparatus having a variable optical-property element, an optical system including the variable optical-property element, a driving circuit driving the variable optical-property element, and an electronic zoom function, wherein when electronic zoom is performed, the variable optical-property element is driven by the driving circuit so that sharpness of an image in an area magnified by the electronic zoom of the optical system becomes best.
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14. An optical apparatus having a variable optical-property element, an optical system including the variable optical-property element, a driving circuit driving the variable optical-property element, and an electronic zoom function, wherein when electronic zoom is performed, the variable optical-property element is driven by the driving circuit so that sharpness of an image in an area magnified by the electronic zoom of the optical system becomes best in view of a change of an imaging state caused by at least one of a change of an object distance, temperature, humidity, a manufacturing error, a change with age, vibration, and an optical magnification change.
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15. An optical apparatus having a variable optical-property element, an optical system including the variable optical-property element, a driving circuit driving the variable optical-property element, and an electronic zoom function, wherein when electronic zoom is performed, the variable optical-property element is driven by the driving circuit so that sharpness of an image in an area magnified by the electronic zoom of the optical system becomes best, including a manufacturing error of the optical apparatus.
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16. An optical apparatus having a variable optical-property element, an optical system including the variable optical-property element, a driving circuit driving the variable optical-property element, driving information, an image sensor, and an electronic zoom function, wherein when electronic zoom is used to form an image, the variable optical-property element is driven by the driving circuit so that aberration of an image in an area magnified by the electronic zoom of the optical system is reduced.
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22. An optical apparatus having an variable optical-property element, a driving circuit driving the variable optical-property element, at least one optical element unit, and an electronic zoom function, wherein when electronic zoom is performed, the variable optical-property element and the optical element unit are associated with each other and driven to thereby improve sharpness of an area of an image to be used in the electronic zoom.
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32. An electronic imaging apparatus having a stop and an image sensor, wherein when electronic zoom is performed, the stop is opened.
Specification