DE718892C - Light signal - Google Patents
Light signalInfo
- Publication number
- DE718892C DE718892C DES132093D DES0132093D DE718892C DE 718892 C DE718892 C DE 718892C DE S132093 D DES132093 D DE S132093D DE S0132093 D DES0132093 D DE S0132093D DE 718892 C DE718892 C DE 718892C
- Authority
- DE
- Germany
- Prior art keywords
- light
- signal
- light signal
- brightness
- fluorescent tube
- 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.)
- Expired
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
- G08B7/068—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources calling personnel in a restaurant, e.g. waiter call
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
Lichtsignal Es sind in neuerer Zeit Lichtsignale bekanntgeworden, die als Lichtquelle an Sb&lle der bisher verwendeten Glühlampen. Leuchtröhren aufweisen. Besonders vorteilhaft hat sich hier die Verwendung von Hochdruekleuchträhren :erwiesen. Diese Signale sind als Eisenbahn-, Flugplatz- oder Wass@erstraßensignale deshalb besonders geeignet, weil sie ein Linienspektrum hergeben, wohingegen die mit Glühlampen ausgerülsteten Signale ein kontinuierliches Spektrum aufweisen. Gerade bei Eisenbahn- und Wass@erstraßensignalen. muß man oft damit rechnen, daß zwischen dem Auge des Beobachters und dem Signal Dunstschichten liegen, die in den meisten Fällen Rauchteile von Maschinen enthalten. Diese Dunstschichten sind für Lichtstrahlen verschiedener Wellenlänge verschieden stark durchlässig, sie bewirken also bei seinem kontinuierlich zusammengesetzten -Signallicht eine Änderung der Farbe. Rüstet man Signale mit Leuchtröhren aus, so hat man es nur mit einer Emission von wenigen Linien zu tun, die durch derartige Dunstschichten zwar in ihrer Intensität geschwächt werden, wobei aber eine Änderung der Signalfarbe nicht auftritt.Light signal Light signals have become known in recent times, used as a light source on Sb & ll of the incandescent lamps used so far. Fluorescent tubes exhibit. The use of high pressure tubes has proven to be particularly advantageous here : proven. These signals are rail, airfield or waterway signals therefore particularly suitable because they produce a line spectrum, whereas the Signals equipped with incandescent lamps have a continuous spectrum. Just for railway and waterway signals. one must often expect that between the eye of the observer and the signal are haze layers that are in most Cases contain smoke parts from machines. These layers of haze are for rays of light different wavelengths are permeable to different degrees, so they have an effect on his continuously composite signal light a change in color. One equips Signals with fluorescent tubes, you only have an emission of a few lines to do, which are weakened in their intensity by such layers of haze, however, there is no change in the signal color.
Die Erfindung bezieht sich auf ein derartiges Lichtsignal, welches grünes Licht aussenden soll. Zwecks Erzeugung :eines möglichst monochromatischen grünen Lichteswird erfindungsgemäß. das von der Leuchtröhre, vorzugsweisse einer Quecksilberhochdrucleleuchtröhre, :emittierte Licht durch ein Glasfilter geschickt, welches zum Zwecke der Absorption aller unerwünschten Lichtstrahlen sowohl Chrom als auch Neodym enthält. In dem hier im. Frage kommenden, Gerät sendet die Quecksüberleuchtröhre sowohl grüne als auch gelbe Linien aus; von denen die letzteren durch ein gewöhnliches Chromglas weitgehend absorbiert werden. -ES hat sich gezeigt, daß gerade durch die Hinzunahme des Neodyms zu dem Chrom eine stärkere Isolierung der Grünlinie möglich ist, so rlaß die Farbe eines derartigen grünen Lichtsignals unabhängig von Dunstbeeinflussungen äst.The invention relates to such a light signal, which should send out the green light. For the purpose of creation: as monochromatic as possible green light is in accordance with the present invention. the one from the fluorescent tube, preferably one Mercury high pressure tube,: emitted light sent through a glass filter, which for the purpose of absorbing all unwanted light rays as well as Contains both chromium and neodymium. In the one here in the. Question coming, device sends the Mercury fluorescent tube off both green and yellow lines; of which the latter can be largely absorbed by an ordinary chrome glass. -It has shown, that just by adding the neodymium to the chromium a stronger insulation the green line is possible, the color of such a green light signal is left aesthetically regardless of the effects of haze.
Es kann zweckmäßig sein, vor das erfindungsgemäß gebaute Signal noch ein: zweites helligkeitsverminderndes Element, beispielsweise ein Grauglas, zu setzen, um die Gesamthelligkeit des Signallichtes ohne Änderung seiner Farbe herabzusetzen. Gerade bei grünem Licht besteht nä.nnlich die Gefahr, daß durch eine zu hohe Intensität nacht der Eindruck Grün, sondern der Eindruck Weiß bei dem Beobachter ,entsteht, auch wenn ein monochromatisches Grün emittiert wird.It can be useful before the signal built according to the invention a: to set a second brightness-reducing element, for example a gray glass, to reduce the overall brightness of the signal light without changing its color. In particular, with green light there is a risk of excessive intensity at night the impression of green, but rather the impression of white with the observer, arises, even if a monochromatic green is emitted.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES132093D DE718892C (en) | 1938-05-14 | 1938-05-14 | Light signal |
FR852816D FR852816A (en) | 1938-05-14 | 1939-04-07 | Improvements to signaling devices for table service in public establishments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES132093D DE718892C (en) | 1938-05-14 | 1938-05-14 | Light signal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE718892C true DE718892C (en) | 1942-03-24 |
Family
ID=7538957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES132093D Expired DE718892C (en) | 1938-05-14 | 1938-05-14 | Light signal |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE718892C (en) |
FR (1) | FR852816A (en) |
-
1938
- 1938-05-14 DE DES132093D patent/DE718892C/en not_active Expired
-
1939
- 1939-04-07 FR FR852816D patent/FR852816A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR852816A (en) | 1940-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE718892C (en) | Light signal | |
DE702556C (en) | Luminaire with two light sources arranged symmetrically to the axis of rotation in a rotating mirror | |
DE687322C (en) | Electric lamp | |
DE527053C (en) | Process for increasing or producing color contrasts | |
DE581134C (en) | Process for the production of iridescent glasses | |
DE625145C (en) | mirror | |
AT126283B (en) | Glasses for enhancing or creating color contrasts. | |
DE333451C (en) | Projection screen | |
DE1029869B (en) | Optical filter disc for television receivers | |
DE721779C (en) | Arrangement for the visible multicolored reproduction of images of invisible short-wave radiation | |
DE574709C (en) | License plate for motor vehicles with rear lighting | |
DE693387C (en) | Process for the production of multicolored anaglyphic reflective and transparent images | |
DE336198C (en) | Light cover consisting of translucent parts to generate a homogeneously colored light through filtering | |
DE702026C (en) | Process for the manufacture of polarizing filters | |
DE554037C (en) | Condenser | |
DE733518C (en) | Signaling device for railway security purposes | |
DE681635C (en) | Method for determining the inaccuracies to be eliminated when straightening runs by means of a straightening shadow line to be generated by a light source on a ground glass | |
DE824594C (en) | Device for generating illuminated signs | |
DE1028804B (en) | Color temperature meter | |
AT60539B (en) | Device for generating light of a certain color. | |
DE695109C (en) | Method of copying multicolor subtractive images | |
DE903282C (en) | Color pyrometer | |
DE1134220B (en) | Anti-glare filters, in particular for vehicles or glasses | |
DE561463C (en) | Device for displaying changes in driving speed | |
DE522008C (en) | Spectroscope with dispersion prism and wavelength division |