FR2514148A1 - Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency - Google Patents

Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency Download PDF

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Publication number
FR2514148A1
FR2514148A1 FR8113077A FR8113077A FR2514148A1 FR 2514148 A1 FR2514148 A1 FR 2514148A1 FR 8113077 A FR8113077 A FR 8113077A FR 8113077 A FR8113077 A FR 8113077A FR 2514148 A1 FR2514148 A1 FR 2514148A1
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FR
France
Prior art keywords
light
selected frequency
directional transmission
lights
laser system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8113077A
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French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRANCKHAUSER RICHARD
Original Assignee
FRANCKHAUSER RICHARD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FRANCKHAUSER RICHARD filed Critical FRANCKHAUSER RICHARD
Priority to FR8113077A priority Critical patent/FR2514148A1/en
Publication of FR2514148A1 publication Critical patent/FR2514148A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/70—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
    • G01S1/703—Details
    • G01S1/7032—Transmitters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S2201/00—Indexing scheme relating to beacons or beacon systems transmitting signals capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters
    • G01S2201/01—Indexing scheme relating to beacons or beacon systems transmitting signals capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters adapted for specific applications or environments
    • G01S2201/06—Aircraft navigation

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A laser type light or beacon for aircraft or maritime navigation provides a directional transmission of a selected frequency of monochromatic light. Such an installation may be ground based or mounted on a geostationary satellite and is of reduced size since reflectors and lenses are not required. The laser provides a luminous cylinder of light of any chosen colour which is visible in daylight. A single emitting source permits a horizontal sweep of several kilometers to be made. A high power installation for a lighthouse or beacon is made by switching the illumination on and off in millisecond periods. Identification of an installation may be made from the colour of the emitted light.

Description

La présente invention concerne l'utilisation de la lumière ordonnée "Type Laser" comme système de balise ou phare dans la navigation aérienne et maritime, au sol ou à partir d'un satellite géc@tationnaire.  The present invention relates to the use of ordered light "Type Laser" as a beacon or beacon system in air and maritime navigation, on the ground or from a gationary satellite.

Le seul dispositif optique utilisé à ce jour pour le guidage jusqu'à un point donné ou pour éviter un obstacle sur la route à suivre est le phare en mar ou la balise en navigation @érienne utilisant une lampe à incandescence. The only optical device used to date for guiding to a given point or to avoid an obstacle on the route to follow is the lighthouse in sea or the beacon in navigation @ air using an incandescent lamp.

Les défauts d'un tel dispositif sont multiples - diffusion de la lumière tout asi@uth, d'où nécessité de le munir d'un réflecteur diminuant son rendement ; - spectre allant de l'ultre-viclet à l'infrarouge, alors que seule la partie vi sible de ce spectre est utile, d'où perte également de r@ndement ; - perte d'efficacité très importante par tempe humide et voisine de zéro avec la pluie ou le brouillard t - multiplicité des sources lumineuses dans le cas des aéroports sur les pistes ;; - durée de vie limitée des sources lu@in@uses s'accompagnant d'une baisse de puissance , impossibilité d'@xtinction et d'allu@age successifs dans le cas des forte@ puissances à cause des températures engendrées sur les enveloppes, d'où un mécanis@e compl@xe et l@urd dans le cas des phares notamment @à éclats" en marine ; - utilisation de lentilles pour l'obtention d'un fiasceau cylindrique toujours imparfait, ce qui nuit à la portée. The defects of such a device are multiple - light scattering asi @ uth, hence the need to provide it with a reflector reducing its performance; - spectrum from the ultralevel to the infrared, while only the visible part of this spectrum is useful, hence also loss of efficiency; - very significant loss of efficiency in wet weather and close to zero with rain or fog t - multiplicity of light sources in the case of airports on runways; - limited lifespan of lu @ in @ uses sources accompanied by a drop in power, impossibility of successive ignition and lighting in the case of high @ powers due to the temperatures generated on the envelopes, whence a complicated mechanism and the urd in the case of lighthouses in particular @ flashing "in marine; - use of lenses for obtaining a cylindrical flask always imperfect, which harms the range.

Le phare ou la balise, selon l'invention, permet d'éviter ces inconvénients. The lighthouse or the beacon according to the invention makes it possible to avoid these drawbacks.

L'émission de la lumière ordonnée "type laser" est directionnelle.The emission of ordered light "laser type" is directional.

Elle est selon la fréquence sélectionnée monochromique avec possibilité d'utilisation de toutes les couleurs visibles connues sur l'aro-@n-ciel. Elle est du fait de son monochromi@@e et de son émission unidirectionnelle à consommation de puissance égale, au minimum dix fois plus pénétrante et visible par temps de plui@ ou de brcuillard. Elle se matérialise dans l'expace dès que la lumière du jour est faible sous forme d'un cylindre lumineux parfaitement vi sible quel que soit l'angle considéré. Elle peut permettre un baUnage horizon tal sur plusieurs ki@omètres avec une seule source d'émission.It is according to the selected monochromic frequency with the possibility of using all the visible colors known on the sky. It is due to its monochrome @@ e and its unidirectional emission with equal power consumption, at least ten times more penetrating and visible in rain or fog. It materializes in the space as soon as daylight is weak in the form of a perfectly visible luminous cylinder whatever the angle considered. It can allow horizontal balancing on several ki @ ometers with a single emission source.

Ello peut remplacer un phare k éclat simplement par extinction et allu- mage, l'action étant de quelques millièmes de secondes. Ello can replace a flashing headlight simply by switching it off and on, the action being a few thousandths of a second.

Elle permet également la suppression de tout système optique tels que lentilles ou réflecteurs. Elle possède un rendement constant dans le temps. It also allows the removal of any optical system such as lenses or reflectors. It has a constant yield over time.

Elle permettrait dans des condition de visibilité difficile une approche des aéroports par les avions plus facile, d'où une sécurité accrue et de reculer les limites d'arrêt d'atterrissage et de détournement sur d'autres aéroports par manque de visibilité.It would allow, in difficult visibility conditions, an easier approach to airports by airplanes, resulting in increased safety and to reduce the landing stop and hijacking limits at other airports for lack of visibility.

Elle permettrait pour les phares côtiers, du fait de sa possibilitd d'extinc- tion, de ne pas "balayer la terre" avec un meilleur repérage par couleur.It would allow for coastal lighthouses, because of its possibility of extinction, not to "sweep the earth" with better location by color.

Elle permet une puissance en lumière visible comparable à celle utilisée en infrar@uge pour l'armement. It allows a visible light power comparable to that used in infrared for arming.

Claims (4)

REVENDICATIONS 1. @eli@@ caractérisés en ce qu'elle comporte un é@stteur de lu@@ére Orde@née "type laser". 1. @ eli @@ characterized in that it comprises a read @ read er @ Orde @ born "laser type". 2. E@lise selon la revandication 1 @aractérisé@ en se qu'elle ne comporte au@un système optique tal que parabole ou lontille.  2. E @ read according to the revandication 1 @ aractérisé @ in that it comprises au @ an optical system tal only parabola or lontille. 3. @@lise selon la revandication 1 caractérisée en ce que la couleur du faiss@au lumin@ur n'est pas @@@ à un filtre. 3. @@ read according to claim 1 characterized in that the color of the faiss @ in the lumin @ ur is not @@@ with a filter. 4. @@li@@ selon la revendication 2 caractérisée en ce que même pour de trés forte@ puissances l'arrêt et la remise en service peuvant être instentands.  4. @@ li @@ according to claim 2 characterized in that even for very high @ power stopping and restarting can be instentands.
FR8113077A 1981-07-01 1981-07-01 Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency Withdrawn FR2514148A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8113077A FR2514148A1 (en) 1981-07-01 1981-07-01 Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8113077A FR2514148A1 (en) 1981-07-01 1981-07-01 Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency

Publications (1)

Publication Number Publication Date
FR2514148A1 true FR2514148A1 (en) 1983-04-08

Family

ID=9260144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8113077A Withdrawn FR2514148A1 (en) 1981-07-01 1981-07-01 Laser system for navigation beacons and lights - provides directional transmission of luminous cylinder of light of selected frequency

Country Status (1)

Country Link
FR (1) FR2514148A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700912A (en) * 1986-04-24 1987-10-20 Grumman Aerospace Corporation Laser illumination system for aircraft launch and landing system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274358B (en) * 1967-05-30 1968-08-01 Otto Woelky Arrangement for the optical beam steering of ships
FR2289921A1 (en) * 1974-10-22 1976-05-28 Basov Nikolai AIRCRAFT TAKE-OFF AND LANDING ASSISTANCE SYSTEM AND METHOD
FR2345738A1 (en) * 1976-03-23 1977-10-21 Cge Spa LASER TRANSMITTER DEVICE FOR IMPROVING THE SIGHTING OF CLASSIC SURVEILLANCE INSTRUMENTS
US4196346A (en) * 1978-08-22 1980-04-01 Mcelhannon Raymond J Laser guided blind landing system for aircraft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274358B (en) * 1967-05-30 1968-08-01 Otto Woelky Arrangement for the optical beam steering of ships
FR2289921A1 (en) * 1974-10-22 1976-05-28 Basov Nikolai AIRCRAFT TAKE-OFF AND LANDING ASSISTANCE SYSTEM AND METHOD
FR2345738A1 (en) * 1976-03-23 1977-10-21 Cge Spa LASER TRANSMITTER DEVICE FOR IMPROVING THE SIGHTING OF CLASSIC SURVEILLANCE INSTRUMENTS
US4196346A (en) * 1978-08-22 1980-04-01 Mcelhannon Raymond J Laser guided blind landing system for aircraft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700912A (en) * 1986-04-24 1987-10-20 Grumman Aerospace Corporation Laser illumination system for aircraft launch and landing system

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ER Errata listed in the french official journal (bopi)

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