DE17231C - Use of a wave-shaped cross-section for metal light reflectors - Google Patents
Use of a wave-shaped cross-section for metal light reflectorsInfo
- Publication number
- DE17231C DE17231C DENDAT17231D DE17231DA DE17231C DE 17231 C DE17231 C DE 17231C DE NDAT17231 D DENDAT17231 D DE NDAT17231D DE 17231D A DE17231D A DE 17231DA DE 17231 C DE17231 C DE 17231C
- Authority
- DE
- Germany
- Prior art keywords
- section
- wave
- shaped cross
- metal light
- light reflectors
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 title claims description 3
- 229910052751 metal Inorganic materials 0.000 title claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- -1 nickel silver Chemical compound 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
HWHW
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE -4: /Beleuchtungsgegenstände.CLASS -4: / lighting objects.
Zur Anfertigung von Hohlspiegeln, die als Reflectoren für Leuchtflammen dienen, werden statt der bisher dazu gebräuchlichen Bleche aus Kupfer, Messing, Neusilber u. dergl. die in jüngster Zeit zu verhältnifsmäfsig billigerem Preise zu habenden, mit Nickel belegten Stahloder Eisenbleche verwendet.For the production of concave mirrors that serve as reflectors for luminous flames instead of the previously used sheets made of copper, brass, nickel silver and the like Nickel-plated steel or steel available recently at relatively cheaper prices Iron sheets used.
Reflectoren aus den angegebenen weichen Metallen werden bei längerem Gebrauch durch das Putzen beschädigt, wobei sie sich leicht verbeulen und verbiegen und somit ihre ursprüngliche, dem Zweck angepafste Gestalt verlieren und das Licht nicht mehr in der Weise zurückwerfen, wie es beabsichtigt wurde. Die gröfsere Widerstandsfähigkeit des' Stahlblechs schliefst dergleichen Beschädigungen aus.Reflectors made of the specified soft metals will wear off with prolonged use damage to the plaster, where they dent and bend easily and thus their original, lose shape adapted to the purpose and no longer reflect the light back in the way it was intended. The greater resistance of the steel sheet precludes such damage.
Hierzu tritt aber die-in—beiiregentl"er*--Zeiehf-nung^dar-gestellte'-Constructionseigenthümlichkeit vorliegender Hohlspiegel, welche darin besteht, durch Drücken auf der Drehbank ihnen eine gewellte Querschnittsform zu geben. Diese Form vermehrt die Widerstandsfähigkeit des Reflectors, so dafs er seine einmal ihm ertheilte Form ohne brutale Gewalt nicht leicht verliert; die Form ist aber auch für seine Wirkung eine besonders wesentliche. Reflectoren, die nach einer bestimmten Curve, einer Parabel z. B., geformt sein sollen, sind sehr schwer mathematisch genau herzustellen und der Grad ihrer beabsichtigten Wirkung hängt von der mehr oder minder genau innegehaltenen bestimmten Form ab.In addition, however, there is the peculiarity of construction presented in the case of the ruling present concave mirror, which consists in pressing them on the lathe to give corrugated cross-sectional shape. This shape increases the resistance of the reflector, so that it does not easily lose its form once given to it without brutal violence; the But form is also particularly important for its effect. Reflectors that follow a certain curve, a parabola z. B., to be shaped, are very difficult mathematically precisely establish and the degree of their intended effect depends on the more or less precisely paused particular Shape.
Die Anbringung der Wellen in dem Reflector macht nun eine minutiöse Sorgfalt in dieser Beziehung überflüssig, sofern nur die Abweichung von der beabsichtigten Form an keiner Stelle mehr als die Tiefe einer Welle beträgt und also die bestimmte Curve, durch die Wellenlinie gelegt, diese noch überall schneidet.The installation of the waves in the reflector now makes meticulous care in this Relationship superfluous, provided only the deviation from the intended form at any point is more than the depth of a wave and therefore the specific curve through the wavy line laid, this still cuts everywhere.
Das Licht wird von den durch diese Schnittpunkte gebildeten Kreisen in der beabsichtigten Weise refiectirt, während die dazwischen liegenden Theile des Reflectors das Licht theils sammeln, theils streuen. Es wird hierdurch ein eigentümlich brillirendes Licht erzeugt, das namentlich für das Signalwesen bei Eisenbahnen und Seeschiffen sich eignet.The light is from the circles formed by these intersections in the intended Wisely refiects, while the parts of the reflector lying between them partly reflect the light collect, partly scatter. This creates a peculiarly brilliant light, which is particularly suitable for signaling on railways and seagoing ships.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE17231C true DE17231C (en) |
Family
ID=294176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT17231D Active DE17231C (en) | Use of a wave-shaped cross-section for metal light reflectors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE17231C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE747916C (en) * | 1935-12-31 | 1944-10-20 | Lighting device for diascopic projector |
-
0
- DE DENDAT17231D patent/DE17231C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE747916C (en) * | 1935-12-31 | 1944-10-20 | Lighting device for diascopic projector |
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