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Illumination uniformity

Large field of view complicates achievement uniformly of illumination. Image below shows the typical carefully designed light field as seen on uniform white surface. The line represents the cross-section line that has the intensity profile shown on the right. Multiple white light emmiting diods, LEDs are used in this case. Separation of the red green and blue lines indicates the colour tinge caused by slightly different colours of individual LEDs. All these inperfections of illumination are corrected by the DermaSpec® device.,