LightControl parameter FV.
- What does it measure?
- It measures the apparent maximum view of the objective lens.
- How does it measure it?
- It counts visible markers and converts that to degrees.
- How does it relate to the previous measurement?
- It uses an average reference value from a group of new scopes.
Broader explanation
This measurement is taken to ensure that the image transmitted by the endoscope is wide enough to generate an adequate view.
It measures the maximum field of view from the tip of the lens. The camera is pointed at the sphere and looks through the endoscope at the matrix and determines from this image how large the field of view is.
The system then counts the visible markers and converts this to the number of degrees in visibility. Then, the measurement is referenced to previous measurements and calculates the value based on a group of new endoscopes and any previous measurements of this particular endoscope. In the case of a new, unknown endoscope, this measurement is entered as the initial reference in endoscopemanager.