Societe D'applications Generales D'electricite Et De Mecanique Sagem

Societe D'applications Generales

Societe D'applicitons Generales D'electricite Et De Mecanique

Serge Encaoua

Jean-Pierre Lelay

Philippe Metivier

Emmanuel Sud

An optical sighting and aiming apparatus has a first channel having a disy unit provided with deviation measurement means; a second channel having a sighting member and a light deviator for angularly deviating the optical axis of the sighting member with respect to a reference direction harmonized with the center of the vision field of the display unit; and an aiming mirror inserted in a light path common to the two channels, at a location between the portions of the two channels which are separate and a multichannel collimator for adjusting the angular direction of both channels with respect to a scene being observed. The second or aiming channel further comprises a separator for separating a light beam from the multichannel collimator into a beam directed toward the sighting member and a beam directed toward a zeroing detector harmonized with the sighting member. A memory stores a correspondence table between coordinates of spots located in the field of the display unit, as provided by the deviation measuring means, and signals to be delivered to the deviator for aligning an axis of the sighting member with the respective spots. The correspondence is determined from signals delivered by the deviation measuring means, by encoding means operatively associated to the deviating means and by an output signal of the zeroing detector.

Multichannel optical aiming and surveying method and apparatus having a

A polychromatic mutual alignment device is suitable for use in an aiming apparatus having a laser delivering a parallel light beam and a plurality of light receivers to be harmonized with the laser. The device comprises an optical mixer having at least two source-forming holes each receiving light delivered in a respective one of a plurality of spectral ranges for which alignment is to be achieved and a plate which is transparent in a wave length range and reflective in another wave range for combining the two light beams into a common mixer output beam; and a parabolic mirror having an axis and placed so as to receive the output beam at an angle with respect to said the axis, the mixer and the mirror being constructed so that all the source-forming holes are at the focal point of the mirror. The mixer further comprises a sensor responsive in the transmission range of the parallel light source and is so constructed that, when the light beam from the parallel light beam source is coaxial with the output beam, the sensor is at the focus of the mirror.

Polychromatic mutual alignment device for an aiming apparatus

A polychromatic mutual alignment device for an aiming apparatus includes an optical mixer having at least two holes each receiving light emitted in one of different spectral ranges for which boresighting is to be achieved and a plate which is transparent in a wave length range and reflective in another wave range for combining the two light beams into a common block output beam. A parabola mirror receives the output beam at an angle with respect to its axis. The mixer and the mirror being so located that all source-forming holes are at the focus of the mirror.

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Clichy, France

Serge Encaoua