1984-11-29
1987-04-28
Corbin, John K.
350433, 350446, G02B 5126, G02B 304, G02B 1700
Patent
active
046609296
ABSTRACT:
An elongate retroreflector has a cylindrical lens arrangement (11) and a cylindrical stepped mirror arrangement arranged therebehind, with the axis (M) of the cylindrical stepped mirror arrangement extending parallel to the axis of the cylindrical lens arrangement (11) and lying on the principal plane (H) of the cylindrical lens arrangement, whereas the focal line (f) of the cylindrical lens arrangement (11) is arranged on the stepped mirror arrangement (12).
REFERENCES:
patent: 2067701 (1937-01-01), James
patent: 2115906 (1938-05-01), Dickson et al.
Corbin John K.
Erwin Sick GmbH - Optik-Elektronik
Lemmo Vincent J.
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