Target object for retroreflexion of optical radiation

G - Physics – 02 – B

Patent

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Details

G02B 5/122 (2006.01) G01C 15/06 (2006.01)

Patent

CA 2663968

A target object (1a) used for retroflexion of optical radiation comprises at least six triple prisms (p1, p2), combined to give a 360 degree reflector which can be arranged on a geodetic measuring pole (6). The triple prisms (p1, p2) forming the 360 degree reflector are arranged in such a manner as to leave a clearance in the center of the 360 degree reflector for accommodating a section (6a) of the measuring pole (6). The prisms are also arranged in such a manner that the virtual images of the triple prism tips lie substantially in one plane perpendicular to a reference axis (10) that runs through the center of the 360 degree reflector and in parallel to the longitudinal direction of the measuring pole (6).

La présente invention concerne un objet cible (1a) destiné à la rétro-réflexion d'un rayonnement optique, présentant au moins six prismes triples (p1, p2) qui composent un réflecteur panoramique qui peut être disposé sur une tige de sondage géodésique (6). Les prismes triples (p1, p2) qui forment le réflecteur panoramique sont disposés de sorte qu'au centre de ce dernier est formé un espace vide destiné à prendre en charge une partie (6a) de la tige de sondage (6). L'agencement s'effectue en outre de sorte que les images virtuelles des pointes de primes triples se trouvent sensiblement dans un plan perpendiculaire à un axe de référence (10) qui passe par le centre du réflecteur panoramique et s'étend parallèlement à la direction longitudinale de la tige de sondage (6).

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