Image pickup apparatus
First Claim
1. An image pickup apparatus comprising:
- an imaging optical system having a distortion in which a center part of an image is stretched, and a peripheral part of the image is squeezed;
an image sensor including a light reception surface at which an image of a subject is formed as a subject image through the imaging optical system, and configured to convert the subject image formed at the light reception surface into image signals;
an image signal processing section configured to perform an image processing to correct a distortion of an image corresponding to the image signals; and
a light-amount characteristic giving section configured to give the subject image a characteristic in which an amount of light at a center part of the subject image formed at the light reception surface of the image sensor is larger than that at a peripheral part of the subject image.
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Abstract
An image pickup apparatus includes an imaging optical system, an image sensor, an image signal processing section and a light-amount characteristic giving section. The imaging optical system has a distortion in such a way as to form an image whose center part is stretched, and whose peripheral part is squeezed. The image sensor has a light reception surface at which a subject image is formed through the imaging optical system, and converts the formed subject image into image signals. The image signal processing section performs an image processing for correcting the image signals with respect to the distortion. The light-amount characteristic giving section gives the subject image a characteristic in which the amount of light at a center part of the subject image formed at the light-reception surface of the image sensor is larger than that at a peripheral part of the subject image.
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Citations
10 Claims
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1. An image pickup apparatus comprising:
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an imaging optical system having a distortion in which a center part of an image is stretched, and a peripheral part of the image is squeezed;
an image sensor including a light reception surface at which an image of a subject is formed as a subject image through the imaging optical system, and configured to convert the subject image formed at the light reception surface into image signals;
an image signal processing section configured to perform an image processing to correct a distortion of an image corresponding to the image signals; and
a light-amount characteristic giving section configured to give the subject image a characteristic in which an amount of light at a center part of the subject image formed at the light reception surface of the image sensor is larger than that at a peripheral part of the subject image. - View Dependent Claims (2, 3, 4, 5)
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6. An image pickup apparatus comprising:
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imaging optical means having a distortion in which a center part of an image is stretched, and a peripheral part of the image is squeezed;
image pickup means including a light reception surface at which an image of a subject is formed as a subject image through the imaging optical means, and for converting the subject image formed at the light reception surface into image signals;
image signal processing means for performing an image processing to correct a distortion of an image corresponding to the image signals; and
light-amount characteristic giving means for giving the subject image a characteristic in which an amount of light at a center part of the subject image formed at the light reception surface of the image sensor is larger than that at a peripheral part of the subject image. - View Dependent Claims (7, 8, 9, 10)
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Specification