|
|
信息光学的同仁请进
Fourier Lens is more demanding than imaging lens, depends on the how precise the spectrum you need. same focusing lens is prefered but not a must, because of the scaling invariance of Fourier transforming.
Longer Focusibg length is very helpful to loose the precision requirement in filter, the tradeoff is longer optical path.
small D/f is very helpful to reduce the cost. smaller than 1/5 is reasonable.
First of all, select the aperture which should be greater than the object.
Less people still are interested in optical information processing now, what is your topic? |
|