Proximity detector for a body scanner

Details Proximity detector for a body scanner Proximity detector for a body scanner

1983-11-09

1986-06-03

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250363S, G01T 120, G01V 904

Patent

active

045931895

ABSTRACT:
A proximity detector is provided for a body scanner having a scanning surface. It comprises an energy beam emitting and receiving device in front of the scanning surface of the body scanner for an energy beam projected in a plane parallel to the scanning surface. A signal generator is connected with the energy beam emitting and receiving device for generating a proximity signal when the energy beam becomes weakened or interrupted. The energy beam is preferably a light beam.

REFERENCES:
patent: 4158776 (1979-06-01), Barrett
patent: 4239961 (1980-12-01), Lasar
patent: 4347438 (1982-08-01), Spielman
patent: 4417143 (1983-11-01), Haas et al.
patent: 4438335 (1984-03-01), Meeder
patent: 4507557 (1985-03-01), Tsikos
Patent Abstracts of Japan, vol. 6, No. 156 (P-135) (1034), Aug. 17, 1982, & JP-A-57 73 688 (Toukiyou Seimitsu K.K.) (8-5-1982).
Patent Abstracts of Japan, vol. 6, No. 41 (P-106) (919), Mar. 13, 1982, & JP-A-56 158 977 (Mitsubishi Denki K.K.).

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