FR2227993A1 - Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam - Google Patents

Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam

Info

Publication number
FR2227993A1
FR2227993A1 FR7316817A FR7316817A FR2227993A1 FR 2227993 A1 FR2227993 A1 FR 2227993A1 FR 7316817 A FR7316817 A FR 7316817A FR 7316817 A FR7316817 A FR 7316817A FR 2227993 A1 FR2227993 A1 FR 2227993A1
Authority
FR
France
Prior art keywords
disc
laser
dual frequency
frequency laser
laser beam
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.)
Granted
Application number
FR7316817A
Other languages
French (fr)
Other versions
FR2227993B3 (en
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.)
LATY MARC
Original Assignee
LATY MARC
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 LATY MARC filed Critical LATY MARC
Priority to FR7316817A priority Critical patent/FR2227993A1/en
Publication of FR2227993A1 publication Critical patent/FR2227993A1/en
Application granted granted Critical
Publication of FR2227993B3 publication Critical patent/FR2227993B3/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D47/00—Equipment not otherwise provided for

Abstract

A bird scaring device suitable for use on aircraft or for ground installation, has two laser generators (5)(6) mounted on a rotating disc (4) driven by an electric motor (3) and this assembly is mounted on a larger rotating disc (1) driven by a second electric motor (2). One laser generates red light of 0.75 micrometre wave length and the other laser generates indigo light of 0.40 micrometre. A hole (7) in the large disc (1) allows laser pulses of alternate wavelengths to pass the disc. The rotation of the disc generates a cone of separate beams but, because of image retention by the eye, appears as a steady conical beam. The alternating colour of the pulses of light disturbs the birds and scares them away.
FR7316817A 1973-05-04 1973-05-04 Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam Granted FR2227993A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7316817A FR2227993A1 (en) 1973-05-04 1973-05-04 Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7316817A FR2227993A1 (en) 1973-05-04 1973-05-04 Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam

Publications (2)

Publication Number Publication Date
FR2227993A1 true FR2227993A1 (en) 1974-11-29
FR2227993B3 FR2227993B3 (en) 1976-04-23

Family

ID=9119072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7316817A Granted FR2227993A1 (en) 1973-05-04 1973-05-04 Bird scarer using dual frequency laser beam - has rotating generator to provide conical beam

Country Status (1)

Country Link
FR (1) FR2227993A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236267A2 (en) * 1986-03-04 1987-09-09 Rüdiger Steffen Method and device for preventing the impact of birds
DE4029205A1 (en) * 1990-09-14 1992-03-19 Hella Kg Hueck & Co METHOD AND DEVICE FOR AVOIDING BIRD SHOCK ON PLANES
DE4029204A1 (en) * 1990-09-14 1992-03-19 Hella Kg Hueck & Co METHOD AND DEVICE FOR AVOIDING PLANE COLLISIONS
US6681714B1 (en) * 1999-12-02 2004-01-27 Richard Robert Johnson Method for chasing animals from a location

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236267A2 (en) * 1986-03-04 1987-09-09 Rüdiger Steffen Method and device for preventing the impact of birds
EP0236267A3 (en) * 1986-03-04 1989-04-12 Rudiger Steffen Method and device for preventing the impact of birds
DE4029205A1 (en) * 1990-09-14 1992-03-19 Hella Kg Hueck & Co METHOD AND DEVICE FOR AVOIDING BIRD SHOCK ON PLANES
DE4029204A1 (en) * 1990-09-14 1992-03-19 Hella Kg Hueck & Co METHOD AND DEVICE FOR AVOIDING PLANE COLLISIONS
US5319367A (en) * 1990-09-14 1994-06-07 Hella Kg Hueck & Co. Process and apparatus for the avoidance of airplane collisions
US6681714B1 (en) * 1999-12-02 2004-01-27 Richard Robert Johnson Method for chasing animals from a location

Also Published As

Publication number Publication date
FR2227993B3 (en) 1976-04-23

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Legal Events

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