Pressure and optical sensitive device with deformable protrusion

Details Pressure and optical sensitive device with deformable protrusion Pressure and optical sensitive device with deformable protrusion

1982-12-29

1986-06-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

901 47, H01J 516

Patent

active

045931917

ABSTRACT:
There is disclosed a tactile sensor comprised of a compliant overlay having a surface of spatially dispersed semi-spherical domes in registration with sequentially pulsed signal means, such as light emitting diodes. The domes adaptively collapse upon the application of pressure applied to the opposite surface of the overlay entrapping signals by reflection between the overlay surfaces. The entrapped signals migrate by reflection to the edges of the overlay for reception by photodetectors. The output from the photodetectors is then processed for determining the magnitude, location and profile of the pressure applied across the overlay. A feedback arrangement is also provided for controlling the magnitude of the externally applied pressure.

REFERENCES:
patent: 3966326 (1976-06-01), Brull et al.
patent: 4017848 (1977-04-01), Tannas
patent: 4116531 (1978-09-01), Greenwood
patent: 4346376 (1982-08-01), Mallos
patent: 4360247 (1982-11-01), Beasley

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