Patent US4483587A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4483587A Expired / Lapsed US ⏱️ 0.0 years remaining

Sighting and aiming arrangement for use during day or night

Assignee: Societe de Fabrication dInstruments de Mesure SFIM SA
•
Filing: 1982-12-20
•
Granted: 1984-11-20
•
Expires: 2002-12-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The arrangement is of the type comprising: an optical sight (200) combined with an afocal opto-electronic unit (300). According to the invention the opto-electronic unit is located in front of the entry window (210) of the optical sight and the light rays emitted by a reticle (250) are guided from the optical sight (ABC) thus passing through its entry window (210), then towards the exit window (320) of the opto-electronic unit (CDEFG) in order to make the rays emitted by the reticle follow the same optical path (GHIJ) as the rays emitted by the object to be observed (400). The angular deviations produced by the addition of the opto-electronic unit are thus compensated for. In order to measure the magnification produced by this addition, the reticle (251,251') is split by a known value (1) the distance (1') between the images of this split reticle is then measured by a row of diodes (280), (FIG. 2).

Inventors

  • 👤 Patrick Michon
  • 👤 Jean-Marie Vauchy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 15:08
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/10; F; F41; F41H; F41H5/00; F41H5/26; F41H5/266; G02B23/08

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 220 words
A sighting and aiming arrangement, of the type comprising: an optical sighting device comprising an entry window and comprising a source of visible light forming a reticle, an afocal opto-electronic unit for night vision, comprising an entry window and an eyepiece window and connected to the sighting device so that it can be separated, a common structure supporting the optical sighting device and the opto-electronic unit, characterized in that: the eyepiece window of the opto-electronic unit is located in front of the entry window of the optical sighting device, the entry window of the opto-electronic unit being orientated in the direction of the object sighted, and in that reflecting and quiding means are provided in order to guide light rays emitted by the reticle to leave the optical sighting device by passing through the entry window of the optical sighting device then by-pass the opto-electronic unit toward the entry window of the opto-electronic unit, the path of the rays leaving the optical sighting device being parallel to the path of the rays entering the opto-electronic unit, in order to cause said rays emitted by the reticle to enter the entry window of the afocal opto-electronic unit together with the rays emitted by the object sighted, whereby both rays will follow the same further optical path into the afocal opto-electronic unit.
Claim 2
Dependent Claim 220 words
A sighting and aiming arrangement, of the type comprising: an optical sighting device comprising an entry window and comprising a source of visible light forming a reticle, an afocal opto-electronic unit for night vision, comprising an entry window and an eyepiece window and connected to the sighting device so that it can be separated, a common structure supporting the optical sighting device and the opto-electronic unit, characterized in that: the eyepiece window of the opto-electronic unit is located in front of the entry window of the optical sighting device, the entry window of the opto-electronic unit being orientated in the direction of the object sighted, and in that reflecting and quiding means are provided in order to guide light rays emitted by the reticle to leave the optical sighting device by passing through the entry window of the optical sighting device then by-pass the opto-electronic unit toward the entry window of the opto-electronic unit, the path of the rays leaving the optical sighting device being parallel to the path of the rays entering the opto-electronic unit, in order to cause said rays emitted by the reticle to enter the entry window of the afocal opto-electronic unit together with the rays emitted by the object sighted, whereby both rays will follow the same further optical path into the afocal opto-electronic unit.
Claim 3
Dependent Claim 29 words
An arrangement according to claim 1, characterized in that the reflecting and guiding means include a semi-reflecting mirror located in front of the entry window of the opto-electronic unit.
Claim 4
Dependent Claim 32 words
An arrangement according to claim 1, characterized in that the reflecting and guiding means include an opaque mirror of small dimensions located in front of the entry window of the opto-electronic unit.
Claim 5
Dependent Claim 18 words
An arrangement according to claim 1, characterized in that reflecting and guiding means include a series of prisms.
Claim 6
Dependent Claim 59 words
An arrangement according to claim 1 characterized in that it comprises a split reticle emitting two parallel rays separated by a predetermined spacing and in that the two images are received at the end of their optical path, by means for measuring the distance between these two images, in order to determine the magnification introduced by the opto-electronic unit.
Claim 7
Dependent Claim 30 words
An arrangement according to claim 5, characterized in that the images of the split reticle are returned to the device for measuring their separation by means of a semi-reflecting mirror.
Claim 8
Dependent Claim 41 words
An arrangement according to claim 5, characterized in that the split reticle emits rays of invisible light and in that the images from this split reticle are returned to the device for measuring their separation by means of a dichroic mirror.
Claim 9
Dependent Claim 60 words
An arrangement according to claim 1, characterized in that the optical sighting device is a telescopic sight with a rotating mirror and in that the rays emitted by the reticle are reflected firstly by this mirror before leaving through the entry window of the sight and are reflected secondly by this same mirror after having passed through the opto-electronic unit.
Claim 10
Dependent Claim 16 words
An arrangement according to claim 1, characterized in that the opto-electronic unit is a light intensifier.
Claim 11
Dependent Claim 22 words
An arrangement according to claim 1, characterized in that the opto-electronic unit is a convertor for converting thermal radiation into visible radiation.

References Cited (Backward Citations)

US3936137A Cited
US4108551A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-11-20 1988-05-21 1988-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-11-20 1992-05-21 1992-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-11-20 1996-05-21 1996-11-20 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag