Ultrahaptics IP Ltd

William Wren

Benjamin John Oliver Long

Brian Alan Kappus

Thomas Andrew Carter

Michele Iodice

Robert Charles Blenkinsopp

Jonathan Martinez MUÑOZ

Adam Harwood

To resolve an issue related to the calibration of optical cameras in transducer-based mid-air haptic systems, the magnification of the motion induced on an optical camera by an acoustic field modulated at specific frequencies reveals very small temporal variations in video frames. This quantized distortion is used to compare different acoustic fields and to solve the calibration problem in an automatized manner. Further, mechanical resonators may be excited by ultrasound when it is modulated at the resonant frequency. When enough energy is transferred and when operating at the correct frequency, a user in contact with the device can feel vibration near areas of largest displacement. This effect can be exploited to create devices which can produce haptic feedback while not carrying a battery or exciter when in the presence of an ultrasonic source.

Haptic effects from focused acoustic fields

Growing community of inventors

San Jose, CA, United States of America

William Wren