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

• Design experience for customized solutions
• Fast sampling possible
• High volume production
• Customized filter sizes
• Optional sealing technologies available

Applications

• Gesture recognition system
• 3D imaging applications
• Multi purpose cameras for the automotive market
• Distance measurement systems

Technical Data

Transmittance in the bandpass

T_avg > 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