Optical displacement sensor utilizing optical diffusion and refl

Details Optical displacement sensor utilizing optical diffusion and refl Optical displacement sensor utilizing optical diffusion and refl

1993-07-30

1995-02-14

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25022721, 250229, H01J 4014

Patent

active

053897773

ABSTRACT:
The invention relates to optical devices, particularly to an optical displacement transducer for detecting a light flow received by a light sensor and subsequent determination of the amount of force applied to an object within which the optical displacement transducer is mounted. The transducer utilizes a light source which is mounted within a housing having a translucent face, and a light sensor mounted in a body having a corresponding translucent face. The light flow which travels between the translucent faces is intermittently blocked by a shadow rod moving between the light source and the light sensor in response to an external force applied to the shadow rod.

REFERENCES:
patent: 4271354 (1981-06-01), Shellenberger
patent: 4320293 (1982-03-01), Guretzky
patent: 4333009 (1982-06-01), Stevens
patent: 4607160 (1986-08-01), Sakakino
patent: 4928008 (1990-05-01), Huggins et al.
patent: 4994669 (1991-02-01), Stern
patent: 5155355 (1992-10-01), Kabaya

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