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geometrical optics
miscellaneous concerning paraxial conjugation


depth of field for a given object and a collimating - focusing combination of two thin lenses


Caution
Fill in all input cells.
Choose all parameters unit.
D, Dr and dx are strictly positive. Other distances and dimensions are algebric.
Positive direction is according the horizontal arrow in the bottom right of the scheme.

InputValueunit
fi1
fi2
D
L
Dr
OutputValueUnit
dx1to be calculated
dx2to be calculated
dxto be calculated
depth of field for a given object and a collimating - focusing combination of two thin lenses
fi1 : effective focal length of the first lens fi2 : effective focal length of the second lens D : aperture diameter ( supposed to be at the second lens location ) L : distance between the lenses Dr : maximum image spot diameter dx1 : depth of field calculated as the algebric distance from the front focal point of the first lens to one of the limit positions dx2 : depth of field calculated as the algebric distance from the front focal point of the first lens to the other limit position dx : total depth of field

Note
This calculation page can not detect all unrealistic inputs.



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