Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1988-09-29
1990-04-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 5, G01N 2186
Patent
active
049163248
ABSTRACT:
To simplify the reflectors for electro-optical distance measurement with a distance measuring apparatus with modulation of light outside of the light source, the optical bundle for distance measurement is focussed on to the target. Thereby, distance measurements on unprepared (non-cooperative) objects or on objects prepared only with simple reflecting foils are made possible.
REFERENCES:
patent: 3200698 (1965-08-01), Froome et al.
patent: 3424531 (1969-01-01), Bender et al.
patent: 4759623 (1988-07-01), Meier
Kern & Co. AG
Nelms David C.
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