DE1103047B - Cold light mirror - Google Patents
Cold light mirrorInfo
- Publication number
- DE1103047B DE1103047B DEZ6974A DEZ0006974A DE1103047B DE 1103047 B DE1103047 B DE 1103047B DE Z6974 A DEZ6974 A DE Z6974A DE Z0006974 A DEZ0006974 A DE Z0006974A DE 1103047 B DE1103047 B DE 1103047B
- Authority
- DE
- Germany
- Prior art keywords
- cold light
- light mirror
- interference
- layers
- heat
- 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.)
- Pending
Links
- 239000000126 substance Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/28—Interference filters
- G02B5/281—Interference filters designed for the infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
Description
Kaltlichtspiegel Die Erfindung betrifft einen Kaltlichtspiegel, dessen spiegelnde Fläche aus einem System interferenzfähiger Schichten mit für die Wärmestrahlen geringem, für die sichtbaren Strahlen hohem Reflexionsvermögen besteht, als deren Träger eine unzerbrechliche, nicht aus Glas bestehende Unterlage mit vorzugsweise polierter Oberfläche dient.Cold light mirror The invention relates to a cold light mirror, the reflective surface made of a system of interfering layers with for the heat rays low, high reflectivity for the visible rays than theirs Carrying an unbreakable, non-glass base with preferably polished surface.
Bei solchen Kaltlichtspiegeln wirkt sich nachteilig aus, daß die Wärmestrahlung, die von den Interferenzschichten durchgelassen wird, beim Auftreffen auf die unzerbrechliche Unterlage reflektiert wird, so daß die in der Interferenzschicht eingetretene Trennung der sichtbaren Strahlung von der Wärmestrahlung mindestens zum Teil wieder aufgehoben wird.The disadvantage of such cold light mirrors is that the thermal radiation, which is let through by the interference layers when it hits the unbreakable one Underlay is reflected, so that the separation occurred in the interference layer the visible radiation is at least partially canceled out by the thermal radiation will.
Es ist zwar schon vorgeschlagen worden, zwischen den aufgetragenen Interferenzschichten und ihrem Träger eine nicht interferierende, zusätzliche Schicht vorzusehen, die die Wärmestrahlen wenig reflektiert, sie aber in hohem Maße absorbiert.Although it has already been suggested between the applied Interference layers and their support a non-interfering, additional layer provide, which reflects the heat rays little, but absorbs them to a high degree.
Auf diese zusätzliche Zwischenschicht kann verzichtet werden, wenn gemäß vorliegender Erfindung als Träger der Interferenzschichten eine Unterlage aus Kunststoff dient, die durch Beimischung absorbierender Stoffe, wie Kohle oder Ruß, die Eigenschaft erhält, im Ultraroten wenig zu reflektieren und die Wärme stark zu absorbieren.This additional intermediate layer can be dispensed with if According to the present invention, a base is used as a carrier for the interference layers Made of plastic is used by adding absorbent substances such as carbon or Soot, which has the property of reflecting little in the ultra-red, and the warmth is strong to absorb.
Spiegel aus absorbierendem Glas sind wegen ihrer Zerbrechlichkeit, die durch Glasspannungen infolge der Wärmeaufnahme verursacht werden, besonders gefährdet. Ein Kaltlichtspiegel mit der Eigenschaft der Unzerbrechlichkeit ist daher den bekannten Kaltlichtspiegeln aus Glas vorzuziehen, da die Spiegel mit den Merkmalen vorliegender Erfindung wesentlich höher als Kaltlichtspiegel auf einer Glasunterlage belastet werden können.Because of their fragility, mirrors made of absorbent glass are caused by tension in the glass as a result of heat absorption, especially endangered. A cold light mirror with the property of being unbreakable is therefore To be preferred to the well-known cold light mirrors made of glass, since the mirrors with the features The present invention is significantly higher than a cold light mirror on a glass base can be charged.
Einen Spiegel mit diesen Merkmalen stellt schematisch die Zeichnung dar.A mirror with these characteristics is shown schematically in the drawing represent.
Auf der Unterlage 1 wird das System der Interferenzschichten 3 aufgetragen. Mindestens in der den Interferenzschichten benachbarten Zone 2 des Trägers 1 erhält er durch Beimengungen stark absorbierender Stoffe die angestrebte Eigenschaft, Wärme in hohem Maße zu absorbieren.The system of interference layers 3 is applied to the substrate 1. At least in the zone 2 of the carrier 1 adjacent to the interference layers, it is given the desired property of absorbing heat to a high degree through the addition of highly absorbent substances.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEZ6974A DE1103047B (en) | 1952-08-16 | 1952-08-16 | Cold light mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEZ6974A DE1103047B (en) | 1952-08-16 | 1952-08-16 | Cold light mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1103047B true DE1103047B (en) | 1961-03-23 |
Family
ID=7619959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEZ6974A Pending DE1103047B (en) | 1952-08-16 | 1952-08-16 | Cold light mirror |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1103047B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4140851A1 (en) * | 1991-12-11 | 1993-06-24 | Gartner & Co J | Sun-blind for protecting building from heating effect of solar radiation - has juxtaposed cells or channels separated by struts, with inner surfaces having larger reflective index for visible radiation than for solar and sky radiation components |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE418238C (en) * | 1921-09-23 | 1925-08-27 | Optische Anstalt C P Goerz A G | Glass mirror for projector |
| DE604146C (en) * | 1930-11-14 | 1934-10-15 | Jenaer Glaswerk Schott & Gen | Heat-absorbing glass |
-
1952
- 1952-08-16 DE DEZ6974A patent/DE1103047B/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE418238C (en) * | 1921-09-23 | 1925-08-27 | Optische Anstalt C P Goerz A G | Glass mirror for projector |
| DE604146C (en) * | 1930-11-14 | 1934-10-15 | Jenaer Glaswerk Schott & Gen | Heat-absorbing glass |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4140851A1 (en) * | 1991-12-11 | 1993-06-24 | Gartner & Co J | Sun-blind for protecting building from heating effect of solar radiation - has juxtaposed cells or channels separated by struts, with inner surfaces having larger reflective index for visible radiation than for solar and sky radiation components |
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