Patent ID: 7702235
Filing Date: 2010-04-20
Classification: G03B

Abstract:
1. A method of operating a camera apparatus that comprises a camera and a flash, the camera comprising a sensor, a camera lens, and a processor system having a routine executable thereon, the flash comprising a light source and a flash lens, the routine being a lens shading routine structured to employ a number of compensation parameters in performing a predetermined processing operation on an image signal from the sensor, the method comprising: processing a non-flash image signal with at least a portion of the routine; employing a number of first compensation parameters as the compensation parameters in said processing a non-flash image signal; processing a flash image signal with at least a portion of the routine; employing a number of second compensation parameters as the compensation parameters in said processing a flash image signal, the first compensation parameters and the second compensation parameters being at least partially different, wherein the sensor comprises a plurality of R pixels, a plurality of G pixels, and a plurality of B pixels distributed about the sensor, wherein the light source comprises a source of electromagnetic energy and an absorption/emission layer, the absorption/emission layer overlying the source of electromagnetic energy and having a thickness (T) in an on-axis direction away from the source of electromagnetic energy, and wherein the second compensation parameters comprise an R compensation parameter subset, a G compensation parameter subset, and a B compensation parameter subset, and further comprising: receiving as a portion of a flash image signal at least one R pixel signal, at least one G pixel signal, and at least one B pixel signal; individually processing the R, G, and B pixel signals with the R, G, and B compensation parameter subsets, respectively; and employing as the compensation parameters in the R, G, and B compensation parameter subsets compensation parameters that have been selected to compensate for spectral variations resulting from off-axis transmission of electromagnetic energy a greater distance through the absorption/emission layer than the thickness (T).