Patent ID: 6566646
Filing Date: 2003-05-20
Classification: G01J,G01N

Abstract:
An image input apparatus comprising:conveying means for moving an object in a predetermined direction; two illuminating means for illuminating said object, respectively comprising a light source for irradiating light to said object, an internal window glass serving as a heat ray absorbing glass through which said light from said light source is transmitted, and an outermost window glass serving as a heat ray transmitting glass through which a light transmitted through said internal window glass is transmitted; image pickup means for picking up an image of said object illuminated by said two illuminating means, having an image pickup field positioned between said two illuminating means; and air cooling means for generating an air flow to forceably cool a front surface of said internal window glass and a rear surface thereof further comprising a casing having said outermost window glass; and an accommodating box which houses said internal window glass and said light source, separable and detachable from said casing.