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Narrow Bandpass Filters For Gesture Recognition

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Narrow Bandpass Filters for Gesture Recognition Systems NIR Bandpass Filter with Low Angle Dependency and High Performance Blocking Gesture recognition and TOF systems like 3D imaging applications require best transmission performance in the range of the illumination wavelength (Laser or LED source) for a wide field of view. Outside the bandpass an extraordinary blocking is required to suppress the ambient illumination for a better contrast. The filters can be provided in various sizes and if required with B-Stage Epoxy or solderable coating frames for optional sealing. Benefits Technical Data n Design experience for customized solutions Transmittance in the bandpass Tavg > 94 % in the bandpass NIR Blocking in the cut off bands OD>4 avg (UV and VIS) OD>3 avg (up to 1.2 µm) OD>2 abs Slope T(90 %) – T(10 %) < 10 nm CWL shift as a function of AOI < 12 nm up to 30° AOI Max substrate size 200 mm round Design adjustments According to application and customer requirements possible n Fast sampling possible n High volume production n Customized filter sizes n Optional sealing technologies available Applications n Gesture recognition system n 3D imaging applications n Multi purpose cameras for the automotive market n Distance measurement systems Schematic of NIR Bandpass Filters for TOF Camera Bandpass Filter Light Source LED / LASER d1 d2 Object / Gesture NIR Bandpass Filter Optics Imaging Processor Unit Camera Sensor CMOS / CCD Optics Balzers AG Neugrüt 35 LI-9496 Balzers Liechtenstein T +423 388 9200 F +423 388 9390 [email protected] www.opticsbalzers.com OBA 056 PE (1406-1) Subject to technical change without notice 1/2 Transmittance [%] Transmittance [%] NIR Bandpass Filter with back side AR 100 90 80 70 60 50 AOI = 0° 40 AOI = 25° 30 20 10 0 300 400 500 600 700 800 900 1000 1100 Wavelength [nm] Wavelength [nm] Optics Balzers AG Neugrüt 35 LI-9496 Balzers Liechtenstein T +423 388 9200 F +423 388 9390 [email protected] www.opticsbalzers.com OBA 056 PE (1406-1) Subject to technical change without notice Powered by TCPDF (www.tcpdf.org) 2/2