Reflex reflector device
AssigneeLucas Industries Limited
InventorKenneth J. Jones
Life of this patent
Estimating the term…
Abstract
The reflectivity of a reflex reflector device comprising a reflex reflector element having corner cube reflecting elements on a rear surface thereof is improved, particularly at high entrance angles, by the provision of a second reflex reflector element behind the first reflex reflector element. The second reflex reflector element has corner cube reflecting elements which are on a rear surface thereof and which have a linear size five to ten times smaller than that of the corner cube reflecting elements of the first reflex reflector. Further improvements can be obtained if the corner cube reflecting elements of the second reflex reflector are angled relative to the front surface of the first reflex reflector.
Claims11
A reflex reflector device comprising a first reflex reflector having (1) a front surface, and (2) a rear surface provided with a plurality of corner cube reflecting elements, and a second reflex reflector disposed behind said first reflex reflector, said second reflex reflector having (1) a front surface and (2) a rear surface provided with a plurality of corner cube reflecting elements which have a linear size less than that of said corner cube reflecting elements of said first reflex reflector, said front surface of said second reflex reflector being disposed between said corner cube reflecting elements of said rear surfaces of said first and second reflex reflectors, whereby a light ray from a predetermined direction which is incident upon said front surface of said first reflex reflector and which passes through said first reflex reflector to enter said second reflex reflector via said front surface thereof is reflected by faces of one of said corner cube reflecting elements of said second reflex reflector so as to return in a direction substantially parallel to that at which it entered said second reflex reflector.
A reflex reflector device comprising a first reflex reflector having (1) a front surface and (2) a rear surface provided with a plurality of corner cubes, and a second reflex reflector disposed behind said first reflex reflector and having (1) a front surface and (2) a rear surface provided with a plurality of corner cubes which are (a) smaller than said corner cubes of said first reflex reflector, and (b) angled relative to said front surface of said first reflex reflector such that a light ray from a predetermined direction which is incident upon said front surface of said first reflex reflection and which passes through said first reflex reflector to enter said second reflex reflector is reflected by faces of one of said corner cubes thereof so as to return in a direction substantially parallel to that at which it entered said second reflex reflector.
Dependencies are inferred from the claim text.