2010年11月19日金曜日

Calculating of Film Gate for tracking monkey

Calculating of Film Gate for Boujou and Syntheyes users

Conclusion
sony F23(imager 2/3" CCD) 9.6mm
HDC1500(imager 2/3" CCD) 9.6mm


How to Calculate

CCD have a round range, and its circle is called "Image Circle".
"2/3inch" means the size of Image Circle.
But 2/3inch(=16.9mm) is not a diameter of Image Circle.
In fact 2/3 inch CCD has just 11mm across Image Circle.
It is easy to confuse.
This grade was set long time ago when camera tube.
Old type camera tubes have curved surface.
Then the diameter of Image Circle is just 11mm.

So, SQRT



And Then


Finally We find 9.6mm

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