DK147502B - LIGHT SIGNAL ARRANGEMENTS FOR THE RENDERING OF A CONEFUL LIGHT BUNDLE - Google Patents
LIGHT SIGNAL ARRANGEMENTS FOR THE RENDERING OF A CONEFUL LIGHT BUNDLE Download PDFInfo
- Publication number
- DK147502B DK147502B DK166079AA DK166079A DK147502B DK 147502 B DK147502 B DK 147502B DK 166079A A DK166079A A DK 166079AA DK 166079 A DK166079 A DK 166079A DK 147502 B DK147502 B DK 147502B
- Authority
- DK
- Denmark
- Prior art keywords
- light
- bundle
- coneful
- rendering
- cone
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lenses (AREA)
- Farming Of Fish And Shellfish (AREA)
- Selective Calling Equipment (AREA)
Description
U7502 iU7502 i
Opfindelsen angår et lyssignaleringsarrangement af den art, der omfatter en praktisk taget punktformet lyskilde, der er omgivet af en som omdrejningslegeme med akse gennem punktet udformet, transparent hætte, 5 der udgør en første rundtgående linse med brændpunkt sammenfaldende med punktet, hvilken linse er således udformet, at den er rundtstrålende i et plan i hovedsagen vinkelret på nævnte akse. Et lyssignaleringsarrangement af den art anvendes f.eks. på rednings-10 veste, som medbringes i et fly.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a light signaling arrangement of the kind comprising a practically dot-shaped light source surrounded by a transparent, cap-shaped rotary body 5 constituting a first circular focal length lens coincident with the dot thus formed that it is radiating in a plane generally perpendicular to said axis. A light signaling arrangement of this kind is used e.g. on lifejackets that are carried in an aircraft.
Lyskilden udgøres sædvanligvis af glødetråden i en glødelampe, som kan fødes med elektrisk strøm fra et batteri, som havvandet sætter igang.The light source is usually constituted by the filament in an incandescent lamp, which can be fed with electric current from a battery that initiates seawater.
Det lysbundt, der udgår fra linsen i et sådant 15 arrangement, kan ses af en iagttager fra en hvilken som helst position i det plan, der strækker sig vinkelret på aksen og går gennem den punktformede lyskilde eller i nærheden af dette plan. Når en skibbruden bærer en således udstyret redningsvest, vil dette plan normalt 20 være vandret, således at forbipasserende skibe er i stand til at lokalisere vedkommende person.The beam emanating from the lens of such an arrangement can be seen by an observer from any position in the plane extending perpendicular to the axis and passing through the point-shaped light source or near that plane. When a shipwreck wears a life jacket thus equipped, this plane will normally be horizontal so that passing ships are able to locate the person in question.
Redningsoperationerne foregår imidlertid også fra luftfartøjer, dvs. fly eller helikoptere, og de kendte lyssignaleringsarrangementer giver ingen lyskon-25 centration i opadgående retning eller virker således, at der kun er en mindre del af de udgående lysstråler, der strækker sig i tilnærmelsesvis vertikal retning. Disse arrangementer er derfor ikke særlig effektive til lokalisering fra luften.However, rescue operations are also carried out by aircraft, ie. aircraft or helicopters, and the known light signaling arrangements provide no light concentration in the upward direction or act such that there is only a minor portion of the outgoing light rays extending in approximately vertical direction. These arrangements are therefore not very effective for air localization.
30 Opfindelsen giver anvisning på et lyssignalerings arrangement til effektiv lokalisering af den nødstedte fra luften.The invention provides a light signaling arrangement for efficiently locating the distressed from the air.
Med henblik herpå er et lyssignaleringsarrangement ifølge opfindelsen ejendommeligt ved, at hætten er 35 udformet med en anden linse indrettet til at udsende et lysbundt, hvis stråler er koncentrerede omkring frem- 147502 2 bringerne for en kegleflade tilvejebragt ved rotation omkring aksen af en linie, der udgår fra punktet og med aksen danner en vedvarende spids vinkel.To this end, a light signaling arrangement according to the invention is peculiar in that the cap is formed with a second lens designed to emit a beam whose rays are concentrated around the cones of a cone surface provided by rotation about the axis of a line which starting from the point and with the axis forms a sustained pointed angle.
Hvis den linie, med hvilken halvkeglens frembringer 5 danner den nævnte spidse vinkel, er rettet opad, vil alle frembringerne i halykeglen og samtlige stråler i det koncentrerede bundt også være rettet opad. Når et luftfartøj passerer tilnærmelsesvis over den nødstedte, vil det to gange passere gennem keglen og dermed to 10 gange gennem det koncentrerede bundt.If the line with which the half cone generates 5 the said acute angle is directed upward, all the projections in the sliding cone and all the rays in the concentrated bundle will also be directed upward. When an aircraft passes approximately over the distressed point, it will pass twice through the cone and thus twice 10 times through the concentrated bundle.
Hvis vinklen er konstant/. er keglen omdrejningsymmetrisk i forhold til den vertikale akse.If the angle is constant /. the cone is rotationally symmetrical with respect to the vertical axis.
Opfindelsen forklares nærmere i det følgende under henvisning til den skematiske tegning, der viser et 15 snit gennem en del af et arrangement ifølge opfindelsen til signalering af nødstedte, hvilket arrangement omfatter en aiødelampe, hvis glødetråd udgør lyskilden og er omgivet af transparent hætte.The invention will be explained in more detail below with reference to the schematic drawing showing a section through a portion of an arrangement according to the invention for signaling of distress, which arrangement comprises an emergency lamp whose filament is the light source and is surrounded by a transparent hood.
Hætten 1 er formet som et omdrejningslegeme i rela- 2q tion til aksen z'z, som går gennem lyskilden F i lampen 4. I det komplette udstyr er hætten og lampen fastgjort til et bæreorgan, og lampen er forbundet med en elektrisk fødekilde, f.eks. et batteri, som havvandet sætter igang. Når lampen 4 er tændt, leder en rundt-25 gående linse 5 på hætten 1 en del af strålerne fra kilden F ud i form af et bundt 6, der er koncentreret omkring det plan 7, der går gennem punktet F og strækker sig i retning vinkelret på aksen z'z. På tegningen er planets spor vist ved 7. Det koncentrerede 3Q bundt 6 er tilnærmelsesvis rotationssymmetrisk, dog ikke helt, eftersom glødetråden F ikke er helt punktformet. Dette bundt giver lys i alle retninger i planet 7, der normalt er vandrét.The cap 1 is shaped as a rotational body in relation to the axis zz passing through the light source F of the lamp 4. In the complete equipment, the cap and lamp are attached to a carrier and the lamp is connected to an electric supply source, e.g. .g. a battery that launches the seawater. When the lamp 4 is on, a circular lens 5 on the cap 1 projects a portion of the rays from the source F in the form of a bundle 6 which is concentrated around the plane 7 passing through the point F and extending in the direction perpendicular to the axis zez. In the drawing, the plane's traces are shown at 7. The concentrated 3Q bundle 6 is approximately rotationally symmetrical, though not completely, since the filament F is not completely point-shaped. This bundle provides light in all directions in plane 7, which is normally horizontal.
I overensstemmelse med opfindelsen omfatter hætten 1 en anden linse 8, der leder en anden del af de fra 35 kilden F udgående stråler i et bundt 9, der er koncentreret omkring frembringerne for en kegle 10, som 3 147502 er en omdrejningsflade i relation til aksen z’z og har en topvinkel 2a. Det koncentrerede hundt 9. giver lys opad i alle de retninger, der med vertikalen danner en vinkel tilnærmelsesvis lig med a. Som følge heraf 5 vil et luftfartøj to gange passere gennem lysbundtet, når det befinder sig i en afstand til aksen z'z, der fra arrangementet ses under en vinkel lig med a.In accordance with the invention, the cap 1 comprises a second lens 8 which conducts a second portion of the rays emanating from the source F in a bundle 9 which is concentrated around the generators of a cone 10 which is a rotational surface relative to the axis. zez and has a top angle 2a. The concentrated dog 9. gives light upward in all directions which with the vertical form an angle approximately equal to a. As a result 5, an aircraft will pass twice through the beam when it is at a distance from the axis zz, which from the arrangement is seen at an angle equal to a.
På indersiden er linsen 8 afgrænset af et kegleformet diopter, dvs. et diopter med retliniet frembrin-10 ger, medens den på ydersiden er afgrænset af et diopter, hvis frembringer er en del af en kurve, f.eks. en cirkelbue. Formen af dioptrene udgør ingen del af opfindelsen og kan vælges således, at man opnår den optimale koncentration af bundtet 9. Endvidere er opfindelsen 15 ikke begrænset til brugen af en hætte, der er formet som et omdrejningslegeme, eller til opnåelsen af et rotationssymmetrisk, opadgående bundt. Om ønsket behøver den kegle, om hvilken det opadgående bundt koncentreres, ikke at være rotationssymmetrisk.. For at kunne 20 opnå fordelene ved opfindelsen skal keglens frembringere allesammen blot danne en spids vinkel a med vertikalen Fz fra lyskilden. Herved opnås, at et luftfartøj, der passerer vertikalen over dette arrangement eller i nærheden af vertikalen,to gange passerer gennem keglen.On the inside, the lens 8 is bounded by a cone-shaped diopter, i.e. a diopter with the rectilinear generating while delimited on the outside by a diopter whose generating portion is part of a curve, e.g. a circular arc. The shape of the diopters does not form part of the invention and can be selected so as to obtain the optimum concentration of the bundle 9. Furthermore, the invention 15 is not limited to the use of a cap shaped as a rotary body or to obtain a rotationally symmetrical upward bundle. If desired, the cone about which the upward bundle is concentrated does not have to be rotationally symmetrical. In order to obtain the advantages of the invention, the cone's generation must all simply form an acute angle α with the vertical Fz from the light source. Hereby, an aircraft passing the vertical above this arrangement or in the vicinity of the vertical is twice passed through the cone.
25 I det tilfælde, hvor man kun ønsker en lokalisering fra luften, kan linsen 5 afskaffes fra arrangementet ifølge opfindelsen.In the case where only one location from the air is desired, the lens 5 can be removed from the arrangement according to the invention.
Derimod kan hætten være udstyret med flere linser til opnåelse af flere bundter som er koncentrerede om-20 kring frembringerne for forskellige kegler med forskellige topvinkler. Et luftfartøj, der passerer oven over dette arrangement,vil således passere to gange gennem de enkelte bundter, hvilket forbedrer mulighederne for lokalisering af de nødstedte.In contrast, the cap may be equipped with multiple lenses to obtain multiple bundles which are concentrated around the conduits for different cones with different top angles. Thus, an aircraft passing above this arrangement will pass twice through the individual bundles, enhancing the opportunities for locating those in need.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7812032 | 1978-04-24 | ||
FR7812032A FR2424475A1 (en) | 1978-04-24 | 1978-04-24 | LUMINOUS SIGNALING DEVICE EMITTING A CONICAL BEAM |
Publications (3)
Publication Number | Publication Date |
---|---|
DK166079A DK166079A (en) | 1979-10-25 |
DK147502B true DK147502B (en) | 1984-09-03 |
DK147502C DK147502C (en) | 1985-03-18 |
Family
ID=9207502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK166079A DK147502C (en) | 1978-04-24 | 1979-04-23 | LIGHT SIGNAL ARRANGEMENTS FOR THE RENDERING OF A CONEFUL LIGHT BUNDLE |
Country Status (12)
Country | Link |
---|---|
BE (1) | BE875252A (en) |
CA (1) | CA1111813A (en) |
DE (1) | DE2915453A1 (en) |
DK (1) | DK147502C (en) |
FI (1) | FI69202C (en) |
FR (1) | FR2424475A1 (en) |
GB (1) | GB2019547B (en) |
IE (1) | IE48024B1 (en) |
IT (2) | IT1119073B (en) |
NL (1) | NL7903133A (en) |
NO (1) | NO152627C (en) |
SE (1) | SE7903437L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986005256A1 (en) * | 1985-03-07 | 1986-09-12 | Ledex Gmbh | A device for use with an illuminated surface, preferably an electric sign |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4961622A (en) * | 1988-02-25 | 1990-10-09 | University Of Houston - University Park | Optical coupler and refractive lamp |
DE10002420C2 (en) * | 2000-01-20 | 2002-03-07 | Uwe Messarius | Luminaire with an elongated light source |
DE102012209013B4 (en) * | 2012-05-29 | 2020-03-26 | Automotive Lighting Reutlingen Gmbh | Optical element and a light module |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE353127C (en) * | 1922-05-16 | Aeg | Beacon and flashing beacon for aviation and shipping with several nested mirrors and a single light source, possibly consisting of several light points | |
GB112086A (en) * | 1917-05-03 | 1917-12-27 | William Frederick Alber Richey | Improvements relating to Lenses. |
FR729415A (en) * | 1931-01-16 | 1932-07-23 | Globe for lamps for extensive lighting | |
US2109813A (en) * | 1934-10-29 | 1938-03-01 | Winckler Engineering Lab Inc | Automatically lighted lifesaving ring buoy |
US2377194A (en) * | 1943-12-31 | 1945-05-29 | Henry A S Van Daalen | Illuminated signal device for lifesaving equipment |
US2554584A (en) * | 1949-10-17 | 1951-05-29 | Ernest E Metz | Optical refracting control lens of cylindrical echelon shape |
-
1978
- 1978-04-24 FR FR7812032A patent/FR2424475A1/en active Granted
-
1979
- 1979-04-02 BE BE1/9337A patent/BE875252A/en not_active IP Right Cessation
- 1979-04-13 IT IT67791/79A patent/IT1119073B/en active
- 1979-04-13 IT IT7953168U patent/IT7953168V0/en unknown
- 1979-04-17 DE DE19792915453 patent/DE2915453A1/en not_active Withdrawn
- 1979-04-18 GB GB7913507A patent/GB2019547B/en not_active Expired
- 1979-04-19 FI FI791280A patent/FI69202C/en not_active IP Right Cessation
- 1979-04-19 NO NO791292A patent/NO152627C/en unknown
- 1979-04-19 SE SE7903437A patent/SE7903437L/en unknown
- 1979-04-20 NL NL7903133A patent/NL7903133A/en not_active Application Discontinuation
- 1979-04-23 DK DK166079A patent/DK147502C/en not_active IP Right Cessation
- 1979-04-23 CA CA326,162A patent/CA1111813A/en not_active Expired
- 1979-08-08 IE IE816/79A patent/IE48024B1/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986005256A1 (en) * | 1985-03-07 | 1986-09-12 | Ledex Gmbh | A device for use with an illuminated surface, preferably an electric sign |
Also Published As
Publication number | Publication date |
---|---|
GB2019547B (en) | 1983-11-02 |
FR2424475A1 (en) | 1979-11-23 |
DK166079A (en) | 1979-10-25 |
IT7967791A0 (en) | 1979-04-13 |
IT7953168V0 (en) | 1979-04-13 |
NO791292L (en) | 1979-10-25 |
SE7903437L (en) | 1979-10-25 |
DE2915453A1 (en) | 1979-10-31 |
FR2424475B1 (en) | 1980-09-05 |
FI791280A (en) | 1979-10-25 |
IE48024B1 (en) | 1984-09-05 |
FI69202C (en) | 1985-12-10 |
NO152627C (en) | 1985-10-23 |
NO152627B (en) | 1985-07-15 |
GB2019547A (en) | 1979-10-31 |
IT1119073B (en) | 1986-03-03 |
IE790816L (en) | 1979-10-24 |
NL7903133A (en) | 1979-10-26 |
CA1111813A (en) | 1981-11-03 |
FI69202B (en) | 1985-08-30 |
DK147502C (en) | 1985-03-18 |
BE875252A (en) | 1979-10-02 |
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Legal Events
Date | Code | Title | Description |
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PBP | Patent lapsed | ||
PBP | Patent lapsed |