Societe D'optique, Precision, Electronique Et Mecanique Sopelem

Sfim Optronique Pour La Defense Et Le Spatial

Societe D'optique, Precision Electronique & Mecanique

Sopelem

Michel Saint-Sevin

Jacques Moirez

Jean-Michel Baluteau

Michel Blot

Denis Guettier

Daniel Savoye

Patrick Chabanier

Jean-Francedillaois Quint

Benoit Grandjacques

An asymmetric binocular viewing device having a first and a second optical axis forming a horizontal plane. A single objective, a related luminance intensifier tube, a semi-reflecting optical image splitter and a first ocular are aligned in succession the first optical axis. A second ocular related to the optical image splitter by an optical image transmitting system is aligned on the second optical axis. The optical image transmitting system includes in succession a first mirror, an lens system, a second mirror, and a third mirror. The elements are arranged so that an optical path is defined starting from the optical splitter and including a first vertical axis section, a horizontal axis section, and a second vertical axis section describing a U turned upside down in the shape of a bridge located on a vertical plane and perpendicular to both parallel first and second optical axes. This defines a free space between both the first and second oculars freeing up the space for the user.

Binocular viewing device and its assembly process

An observation apparatus enabling alternative sighting of two objects (11, 21) placed in two intersection planes (1, 2). The apparatus comprises, in front of its objective lens (42), a reflector (6) comprising a single flat reflecting surface capable of pivoting around the optical axis (41) of the objective, this axis being positioned substantially in the bisector plane (5) or a plane parallel to the bisector plane of the dihedron formed by the two object planes (1, 2) while forming a specified angle with a ridge (3) of the dihedron. The apparatus applies particularly to an audiovisual device for sighting, using a camera, a person or a document placed before him or her so as to be readable in a normal fashion.

Observation apparatus

Refractometer for measuring the refractive index of a medium (2), using the limiting angle method. A source (4) illuminates a source slit (5) which has as its image with respect to an optical system (S) one of the parallel and regularly spaced slits (5') of a grille (6) fixed perpendicular to the optical axis each of the slits (5') corresponding to an angle of incidence of the optical beam on a prism (3). Turning of a rhombohedron causes the image (5') of the source slit (5) on the grille (6) to be successively on each of the slits (5') of the grille (6). The pupil (L.sub.1), located in the plane of the source, is conjugate with the exit face (8) of the prism (3) and remains stationary when the image (5') of the source slit (5) is moved over the grille (6).

Refractometer using the limiting angle method

Apparatus for guiding aircraft to predetermined parking locations, comprising an optical assembly centered on a reference point, and adapted to provide the pilot in the moving aircraft with two images of a reference point located on the aircraft. When the two images are superimposed, the aircraft has reached the desired location.

Positioning control device

Growing community of inventors

Gagny, France

Michel Saint-Sevin