CCD Object Size Calculator
This calculator requires the use of Javascript enabled and capable browsers.
This calculator finds the minimum detectable object size per
pixel, the total area to be viewed, and the
field of view of the lens, based on data entered for the CCD size and resolution, the focal length of
the lens, and the distance from the lens to the object being
targeted. Enter a numeric value for the lens focal length; the
default is 10mm. Then enter a numeric value for the distance from
the lens to the object followed by a selection from the drop box for
the designation of distance; the combined defaults yield 10 meters.
Select the CCD size from the options in the drop box or select
CUSTOM. If CUSTOM is selected, enter the numeric value for the
custom CCD size in millimeters. The standard default is 1/4 inch and
the custom default is 10mm. Select standard resolutions from the drop down box, or
select CUSTOM from the same box. If CUSTOM is selected, enter the
custom resolution on the following line; the default custom
resolution is 0 x 0 pixels. All calculations take place at each
entry. You may however, click Calculate to update if needed. You may
click Clear Values to begin again. The result is displayed as a very
accurate rendering of the minimum detectable size of the target
object, in millimeters, the total viewed area in XX by XX format,
further modifiable with the selection of the designation for size
display. Finally, the field of view is given in degrees.
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