Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
An optical proximity collision avoidance system mounted on a medium of transportation comprising; optical detecting means responsive to a pulsed light source in the visible and near visible range mounted on another medium of transportation; detection preventive means preventing detection of unwanted light sources; said detection preventive means preventing detection of all light from sources other than a prescribed pulsed light source including a pulsed light source mounted on said medium of transportation; distance determining means for determining the relative distance of a detected pulsed light source; direction determining means determining the relative direction of a detected pulsed light source; indicating means indicating the relative direction of said detected pulsed light source; and alarm indicating means indicating the detection of a prescribed pulsed light source within a distance determined by said distance determining means.
Claim 2
Dependent Claim
134 words
An optical proximity collision avoidance system mounted on a medium of transportation comprising; optical detecting means responsive to a pulsed light source in the visible and near visible range mounted on another medium of transportation; detection preventive means preventing detection of unwanted light sources; said detection preventive means preventing detection of all light from sources other than a prescribed pulsed light source including a pulsed light source mounted on said medium of transportation; distance determining means for determining the relative distance of a detected pulsed light source; direction determining means determining the relative direction of a detected pulsed light source; indicating means indicating the relative direction of said detected pulsed light source; and alarm indicating means indicating the detection of a prescribed pulsed light source within a distance determined by said distance determining means.
Claim 3
Dependent Claim
27 words
The system according to claim 1 in which said detection preventive means includes; blocking means connected to said optical detecting means for blocking steady state light sources.
Claim 4
Dependent Claim
41 words
The system according to claim 2 in which said discriminating means includes band pass filter means receiving the output of said blocking means; said band pass filter means rejecting all pulsed light sources outside the pass band of said filter means.
Claim 5
Dependent Claim
23 words
The system according to claim 3 in which said discriminating means includes pulse width discriminating means for rejecting unwanted momentary pulsed light signals.
Claim 6
Dependent Claim
35 words
The system according to claim 1 in which said distance determining means includes light amplitude detecting means for detecting whether the amplitude of said detected pulsed light source is sufficient to trigger said alarm indicator.
Claim 7
Dependent Claim
15 words
The system according to claim 5 in which said amplitude detector comprises a threshold detector.
Claim 8
Dependent Claim
26 words
The system according to claim 1 in which said direction determining means includes location detection means for detecting the location of said selected pulsed light source.
Claim 9
Dependent Claim
48 words
The system according to claim 7 in which said location detector means comprises; a plurality of said optical detecting sources; coordinate converting means for comparing and converting the output of said plurality of optical detecting means; display means receiving and displaying the output of said coordinate convering means.
Claim 10
Dependent Claim
23 words
The system according to claim 1 in which said optical detecting means includes a photo-transistor sensitive to light sources in the visible spectrum.
Claim 11
Dependent Claim
22 words
The system according to claim 9 in which said phototransistor is sensitive to frequencies in the range of 0.5 to 1.0 microns.