CIS 3365 Lecture Notes - Lecture 10: Dioptre, Human Eye, Chromatic Aberration
16 Dec 2020
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Optics: the human lens system has a focal length of about r = 0. 017 m. the power of the. 1: the objects within about focus for 3 mm pupil diameter if the eye is then focused to distance d0, then the objects within diopters of the focus point d0 appear in 3 m. Chromatic aberration: human eye is not corrected against chromatic aberration. 1: a lens of 1. 5m red diopters is needed to correct the difference of focus between blue and. Pure blue text on black background is almost unreadable if there is white or red text nearby to attract the focusing mechanism: Solution: do not use only pure blue patterns (mix in at least some red or green) Acuity: visual acuities are measurements of our ability to see detail, acuity is at maximum at the center of the fovea.
