Baltech TL-0208C Manuale operativo - Pagina 13

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3.3.3 Field of View (FOV)

The field of view is the angle of vision of the device, which is

determined by the optics of the device. The field of view is

the ratio of the distance from the device lens to the

measurement spot* to the measurement spot diameter.

The FOV diagram is shown on the figure 3.5.

The field of view for this device is determined at the distance

of 1 meter from the lens. At smaller distances the spot

diameter is almost constant and is ~17-19 mm, and at

bigger distances the FOV starts decreasing.

*Measurement spot is an area, from which more than 90%

of emission is fallen to the detector.