Optical ranging
First Claim
1. Optical ranging apparatus for assisting hitching of an object to a subject vehicle having an interior rear view mirror comprising:
- an indicator plate having a window portion comprising two first reference indicia spaced apart to define a space there between, the indicator plate being fastenable to a rear view mirror of the subject vehicle'"'"'s interior so as to be pivotable upwards and downwards relative to the rear mirror, the rear view mirror being arranged forward of at least one view point within the vehicle'"'"'s interior, such that the rear view mirror and said two first reference indicia may be observed together from at least one said view point; and
at least one second reference indicium for being comprised by an object behind the subject vehicle, such that the appearance of said at least one second reference indicium may be reflected by the rear view mirror so as to be observed from at least one said view point;
wherein said two first reference indicia and said at least one second reference indicium are adapted in appearance and size such that during relative motion towards each other of the vehicle and said object the appearance of said at least one second reference indicium will be observed at said at least on view point to come into coincidence with said two first reference indicia and completely fill said space from one to the other of said first reference indicia, whereby a predetermined distance of separation is provided between the vehicle and said object to enable hitching of the object and the vehicle.
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Accused Products
Abstract
Optical ranging (e.g. for hitching purposes) utilises at least one first reference indicium comprised by a subject (e.g. a vehicle); at least one reflector; at least one second reference indicium, for being comprised by an object behind the subject; and optionally at least one third reference indicium; such that during suitable relative motion towards each other of the subject and object, the first and second reference indicia and optionally the third reference indicium are observed suitably to come into coincidence whereby a predetermined distance of separation (e.g. a hitching distance will exist between the subject and object.
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Citations
8 Claims
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1. Optical ranging apparatus for assisting hitching of an object to a subject vehicle having an interior rear view mirror comprising:
- an indicator plate having a window portion comprising two first reference indicia spaced apart to define a space there between, the indicator plate being fastenable to a rear view mirror of the subject vehicle'"'"'s interior so as to be pivotable upwards and downwards relative to the rear mirror, the rear view mirror being arranged forward of at least one view point within the vehicle'"'"'s interior, such that the rear view mirror and said two first reference indicia may be observed together from at least one said view point; and
at least one second reference indicium for being comprised by an object behind the subject vehicle, such that the appearance of said at least one second reference indicium may be reflected by the rear view mirror so as to be observed from at least one said view point;
wherein said two first reference indicia and said at least one second reference indicium are adapted in appearance and size such that during relative motion towards each other of the vehicle and said object the appearance of said at least one second reference indicium will be observed at said at least on view point to come into coincidence with said two first reference indicia and completely fill said space from one to the other of said first reference indicia, whereby a predetermined distance of separation is provided between the vehicle and said object to enable hitching of the object and the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- an indicator plate having a window portion comprising two first reference indicia spaced apart to define a space there between, the indicator plate being fastenable to a rear view mirror of the subject vehicle'"'"'s interior so as to be pivotable upwards and downwards relative to the rear mirror, the rear view mirror being arranged forward of at least one view point within the vehicle'"'"'s interior, such that the rear view mirror and said two first reference indicia may be observed together from at least one said view point; and
Specification