Method and device for determining the quality of an optical instrument, especially its transfer function

摘要

a device for measuring the optical quality of an instrument, and in particular its transfer function, includes a light source (10) for spatially coherent ways to cut two distinct areas in the ward in the instrument (14) to study from the fai seal of light provided by the source.and means (32) for analysis of sections formed in the image plane of the device. these means consist of a network to provide two monochromatic light, a gap area is proportional to the spatial frequency of the work.the device also includes means for measuring the distance to determine new ways of computing the transfer function by integration from measurements of the fringe spacing and the position of the two separate areas for many couples s, corresponding to the whole of the surface of the eye.