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CCD CALIBRATION WITH UV LAMP

IP.com Disclosure Number: IPCOM000010314D
Publication Date: 2002-Nov-20

Publishing Venue

The IP.com Prior Art Database

Abstract

CCD cameras are used for scientific studies and industrial applications where images with high resolution and sensitivity are required. For UV applications, the CCD pixel response is normally low in the UV range due to low quantum efficiency. By applying a UV enhanced layer on the CCD chip, the quantum efficiency for UV can be increased substantially. A calibration tool has been designed where variations in pixel response due to non-uniformities in the UV enhanced layer are corrected with an accuracy of <0.5%. This has been achieved by using a uniform light source using an Hg lamp, resulting in local uniformity variations below 0.5%.