Patent ID: 6674473
Filing Date: 2004-01-06
Classification: H04N

Abstract:
An image pickup apparatus wherein an image of an object produced by an optical system is formed on an electronic image pickup device, thereby obtaining image information concerning the object, wherein said electronic image pickup device and said optical system satisfy the following conditions:1.5<P<7.0â€ƒâ€ƒ(1) 3.0<20â€ƒâ€ƒ(2) 1.0Ã—PÃ—Pâ€ƒâ€ƒ(3) nL/nT<0.25â€ƒâ€ƒ(4) where P is a pixel pitch (given in micrometers) of the image pickup device; N is the number of pixels (given in million) of the image pickup device; &dgr; is a maximum value (given in micrometers) of an absolute value of lateral chromatic aberration for a wavelength of 620 nanometers or 460 nanometers in an area containing a center of an image plane and accounting for 90% of a whole image plane; and nT and nL are the number of lens elements constituting the optical system and the number of lens elements made of anomalous dispersion glass, respectively.