Patent ID: 7012634
Filing Date: 2006-03-14
Classification: G03B,H04N

Abstract:
1. Method of calibrating an image capture device, comprising the steps of: (a) providing an image capture device; (b) providing an illuminator having an integrating chamber with energy inlet ports for receiving energy and energy outlet ports having openings arranged for transmitting energy received through said energy inlet ports, said energy inlet port comprising N+2 number of said energy inlet ports arranged symmetrically about said energy outlet port, where N is an odd integer, and wherein each one of said energy inlet ports has an optical axis generally normal to an optical axis of said energy outlet port and a plurality of emitter means arranged for directing energy along a predetermined optical path through said energy inlet ports into said integrating chamber and through said energy outlet ports of said integrating chamber, said plurality of emitter means comprising a plurality of light emitting diodes (LED) and a circuit board operably connected to each one of said plurality of light emitting diodes (LED); (c) positioning said image capture device proximate to said energy output ports of said integrating chamber; (d) arranging means for transferring emitted energy from said integrating chamber of said illuminator to said image capture device; (e) providing a master control means for controllably coordinating said illuminator and said image capture device during calibration; (f) directing said master control means to set said image capture device into an imagewise exposing state for the purpose of forming an image; (g) instructing said illuminator to sequentially present to said image capture device a plurality of stimulus having programmable spectral and exposure characteristics according to a test-specific predetermined algorithm; (h) directing said master control means to store said image resulting from steps f and g; (i) directing said master control means to operate on said images according to the test-specific predetermined algorithm so as to generate a data set characteristic of said test-specific predetermined algorithm; (j) comparing said data set from said test-specific predetermined algorithm, comprising calibration parameters, with a predetermined set of product specification limits characteristic of said image capture device; and, (k) storing said calibration parameters in a media associated with said image capture device for subsequent processing of newly formed images.