Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1975-09-19
1976-11-23
Wilbur, Maynard R.
Optics: measuring and testing
Range or remote distance finding
With photodetection
178DIG32, 250222R, 340407, 356152, G01C 300
Patent
active
039934071
ABSTRACT:
A polysensory mobility aid comprising first and second signal generating means which produce audio frequency signals, respectively, these signals being coupled to two electrically operable stimulating devices which provide both tactile and auditory stimulation. Each of the signal generating means includes two camera means that generate signals representative of the brightness of optical images projected thereonto. Each signal generating means includes a first fixed frequency signal generator which provides a first signal, and a second variable frequency signal generator which provides a second signal which varies in frequency between limits of a predetermined frequency spectrum, each first and second signal generator being coupled to one of the stimulating devices. Each camera means includes first and second photosensitive devices disposed to receive radiation from a common object. The first signal generator includes first circuit means connecting the first photosensitive device to said first signal generator for selectively activating and deactivating the latter in response to the level of image brightness on said first photosensitive device. Second circuit means connects said second photosensitive device to said second signal generator for varying the frequency of the second signal thereof in response to varying image brightness on said second photosensitive device. The two camera means are positioned fixedly in horizontally spaced relation to have horizontally spaced independent fields of view whereby conjoint oscillatory rotational movement of said camera means about a vertical axis generally between said camera means causes successive imaging of an object onto said two camera means.
REFERENCES:
patent: 3198952 (1965-08-01), Benham et al.
patent: 3369228 (1968-02-01), Foster
patent: 3543666 (1968-05-01), Kazel
patent: 3546467 (1970-12-01), Benjamin, Jr. et al.
patent: 3654477 (1972-04-01), Benjamin, Jr.
patent: 3907434 (1975-09-01), Coles
Moricca Larry S.
Stroer Ronald H.
Buczinski S. C.
Wilbur Maynard R.
Zipcor, Inc.
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