JAJSEU6A February 2018 – June 2018 OPT3101
PRODUCTION DATA.
OSRAM SFH4550 LED meets the required field of view specification and has peak spectral emission at
860 nm. Even though LED is specified for a half-angle of ±3 degrees, a significant amount of the optical power will be outside the half-angle. Figure 170 shows the radiation characteristics of the LED. The photodiode should have a field of view greater than the field of view of the LED to effectively collect all the optical power emitted from the LED and reflected by the object. The photodiode should also have peak sensitivity matching the peak spectral emission of the LED. Most of the photodiodes come in two variants;