Patent ID: 6118114
Filing Date: 2000-09-12
Classification: H04N

Abstract:
An image sensor for reading images on an image carrying member irradiated by a part of light emitted from a light source and passing through a first light path, said light source having another part of the light emitted from said light source directed through a second light path, said first and second light paths being formed separately, said image sensor comprising:a substrate;an array of image sensor chips for receiving reflected light from said first light path from the image carrying member for output of image signals in accordance with luminous energy of the reflected light; andlight detecting means for directly receiving said another part of the light from said second light path for output of a detection signal in accordance with luminous energy of directly received said another part of the light;wherein the array of image sensor chips and the light detecting means are mounted on a common said substrate, the light detecting means being out of alignment with the array of image sensor chips.