公开(公告)号：US07315322B2

公开(公告)日：2008-01-01

申请号：US10900723

申请日：2004-07-28

申请人： Greg L. Archer ,  Eric J. Meisenzahl ,  Dennis J. Vankerkhove

发明人： Greg L. Archer ,  Eric J. Meisenzahl ,  Dennis J. Vankerkhove

IPC分类号： H04N17/00 ,  H04N17/02

CPC分类号： H04N5/3655 ,  H04N17/002

摘要： A method for testing an image sensor for photoresponse uniformity, the method includes the steps of providing a light source having inherent non-uniform light intensity characteristics; providing a light sensing device for measuring an intensity response of the light source on a predetermined image plane; determining an area on the image plane corresponding to an area for the image sensor; measuring pre-selected points of the determined area by the light sensing device for measuring incident light intensity from the light source on the image plane; interpolating non-measured points on the image plane representing an estimate of the non-uniformity of the light source at the non-measured points; inverting the interpolated image to represent the inverse of the light source non-uniformity; and applying the inverted image to the response of the image sensor which compensates for light source non-uniformity and enables the ability to quantify accurately the non-uniformity of the image sensor.

摘要翻译： 一种用于测试光响应均匀性的图像传感器的方法，所述方法包括提供具有固有的不均匀光强度特性的光源的步骤; 提供用于测量在预定图像平面上的光源的强度响应的光感测装置; 确定与图像传感器的区域相对应的图像平面上的区域; 通过光检测装置测量所确定的区域的预选点，以测量来自图像平面上的光源的入射光强度; 在图像平面上插入表示在非测量点处的光源的不均匀性的估计的非测量点; 反转内插图像以表示光源的不均匀性的倒数; 并将反转的图像应用于补偿光源不均匀性的图像传感器的响应，并且能够准确地量化图像传感器的不均匀性的能力。