DE679058C - Glass mirrors for headlights - Google Patents
Glass mirrors for headlightsInfo
- Publication number
- DE679058C DE679058C DES130685D DES0130685D DE679058C DE 679058 C DE679058 C DE 679058C DE S130685 D DES130685 D DE S130685D DE S0130685 D DES0130685 D DE S0130685D DE 679058 C DE679058 C DE 679058C
- Authority
- DE
- Germany
- Prior art keywords
- headlights
- glass
- glass mirrors
- reflective
- covering
- 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
- 239000011521 glass Substances 0.000 title claims description 10
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000889 atomisation Methods 0.000 claims 1
- 239000002244 precipitate Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002966 varnish Substances 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Surface Treatment Of Glass (AREA)
Description
Glasspiegel für Scheinwerferzwecke Glasspiegel für Scheinwerfer stellte man bisher so her, daß man auf die Konvexseite des geeignet ;geformten Glaskörpers einen metallischen Niederschlag aufbrachte. Um diesen Niederschlag gegen mechanische und cheansche Einwirkungen zu schützen, brachte man alsdann auf diesen Niederschlag, der beispielsweise aus Silber bestand, noch einen Kupferniederschlag auf, den man schließlich mit Lack überzog. Dieses Verfahren, bei welchem der Niederschlag auf nassem chemisthem Wege erzeugt wurde, ist verhältnismäßig umständlich. Maat hat deshalb auch schon daran gedacht, den eigentlichen reflektierenden Belag auf dem Wege einer Kathodenzerstäubung herzustellen. Da ein solcher Belag wischfester ist als ein auf chemischem Wege .erzeugter Belag, hat man ferner auch schon daran gedacht, den Belag auf der dem Beschauer zugewendeten Seite .des Glases aufzubringen, wo sich das Überziehen des spiegelnden Belages mit einer Schutzschicht verbietet.Glass mirrors for headlight purposes Glass mirror for headlights put so far that one looks at the convex side of the suitably shaped glass body applied a metallic precipitate. To this precipitation against mechanical and to protect chean influences, one then brought to this precipitate, which consisted of silver, for example, still had a copper deposit, which one finally covered with varnish. This process in which the precipitate occurs wet chemisthem pathways is relatively cumbersome. Mate has therefore already thought of placing the actual reflective coating on the Ways to produce cathode sputtering. Since such a covering is more resistant to wiping as a coating produced by chemical means, one has also already thought of to apply the coating on the side of the glass facing the viewer, where It is forbidden to cover the reflective covering with a protective layer.
Erfindungsgemäß wird vorgeschl.agen,außer einem solchen Belag zusätzlich auch ,auf der dem Beschauer abgewendeten Seite des Glaskörpers einen Belag, und zwar ebenfalls einen spiegelnden Belag anzubringen. Wenngleich dieser zweite Belag normalerweise optisch ohne Bedeutung und daher an sich überflüssig ist, da ja im Falle eine Reflektion nach der gleichen Seite erfolgt, ist er doch, falls der Belag auf der anderen Seite einmal beschädigt werden sollte, von Wert. Scheinwerferspiegel mit einer solchen gleichrichtenden beiderseitigem spiegelnden Belegung des Glases bieten also selbst für den Fall raubesten Betriebes eine gute Sicherheit dafür, daß der Spiegel länger reflektionsfähig bleibt, ;als es, bisher der Fall war.According to the invention, it is proposed, in addition to such a covering also, on the side of the glass body facing away from the viewer, a coating, and to apply a reflective covering as well. Albeit this second topping normally visually irrelevant and therefore superfluous, since im If there is a reflection on the same side, it is, if the surface is on the other hand should be damaged once, of value. Headlight mirror with such a rectifying double-sided reflective coating of the glass thus offer good security even in the case of the roughest operation, that the mirror remains reflective longer than it was previously the case.
Die Abbildung zeigt ,einen Schnitt durch einen gemäß der Erfindung mit zwei Belägen versehenen Spiegel. In der Abbildung bedeutet I den Glaskörper, 2 den inneren, dem Beschauer zugewendeten, 3 den äußeren Spiegelbelag.The figure shows a section through one according to the invention mirror with two coverings. In the figure I means the glass body, 2 the inner, facing the viewer, 3 the outer mirror covering.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES130685D DE679058C (en) | 1938-02-03 | 1938-02-03 | Glass mirrors for headlights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES130685D DE679058C (en) | 1938-02-03 | 1938-02-03 | Glass mirrors for headlights |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE679058C true DE679058C (en) | 1939-07-28 |
Family
ID=7538517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES130685D Expired DE679058C (en) | 1938-02-03 | 1938-02-03 | Glass mirrors for headlights |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE679058C (en) |
-
1938
- 1938-02-03 DE DES130685D patent/DE679058C/en not_active Expired
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