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ISL29501 Sand Tiger Optics

ISL29501 Sand Tiger Optics

This application note describes important optical and opto-mechanical features of the ISL29501 Sand Tiger distance measurement system. Topics discussed include optical system description, System Field of View (FOV), signal photocurrent vs target distance, optical crosstalk mitigation and ambient light mitigation. In the section on system FOV, the geometrical cone model is introduced and compared with the intensity distribution model of FOV. Values for the emitter, detector and system FOV are also given. Variables which affect the signal magnitude are discussed on the section on signal photocurrent vs target distance section. The methods used to mitigate optical crosstalk in Sand Tiger are provided along with suggestions for mitigating optical crosstalk in general.

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