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Low glare mirror plate and rear-view mirror with this type of mirror plate

A technology for reflective mirrors and car rearview mirrors, applied in mirrors, sputtering coating, transportation and packaging, etc., to achieve the effect of reducing glare

Inactive Publication Date: 2010-01-20
MEKRA LANG GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, this red reflector reflects a lot of light in the wavelength range where standard light type A has the highest intensity (in the red range), so this also causes a dazzle effect during the day

Method used

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  • Low glare mirror plate and rear-view mirror with this type of mirror plate
  • Low glare mirror plate and rear-view mirror with this type of mirror plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 1 The layered structure of one embodiment of the mirror sheet 1 according to the invention is shown. On a substrate or carrier 2 made of glass, a coating made of niobium oxide, more specifically Nb 2 o 5 Composition of the first layer 4. On the niobium oxide layer 4, coated with silicon nitride Si 3 N 4 Form the second layer 6. Finally, a third layer 8 of chromium is coated on the silicon nitride layer 6 as a mirror surface. A protective varnish 10 is applied to the reflector surface 8 in order to protect the reflector surface 8 made of chrome from mechanical damage. The protective paint 10 is not necessary to maintain corrosion resistance. Reference numeral 12 denotes an observer of the mirror 1 .

[0021] The niobium oxide layer 4 has a thickness of 38nm±10nm, the silicon nitride layer 6 has a thickness of 49nm±20nm, and the reflective mirror surface 8 made of chromium has a thickness of 50nm±10nm. The thicknesses of these layers 4, 6 and 8 are chosen ...

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Abstract

Disclosed is a low-glare mirror plate, a rear-view mirror with this type of mirror plate, and a method for the production of this type of mirror plate which makes available a reasonable compromise between reduced glare during the day and the night. By the combination of a layer (4) made of niobium oxide (Nb2O5) applied to the transparent substrate (2), a color-giving layer (6) made of silicon nitride (Si3N4) applied to the niobium oxide layer, and a chromium layer (8) as the mirror layer, a sufficiently reduced glare is achieved during the day and night, and also the bluish color of the mirror plate is very homogeneous over the entire surface of the mirror plate.

Description

technical field [0001] The present invention relates to a low-glare reflective mirror according to claim 1 , a method for its manufacture, and a low-glare rearview mirror for automobiles according to claim 14 . Background technique [0002] Common mirror surfaces made of silver, despite the protective paint, are often prone to rust, which adversely affects the field of view and eventually renders the mirror completely useless. Furthermore, the disturbing glare effect should be mitigated not only at night, but also during the day, that is to say, low glare should be achieved in the entire visible wavelength range. In a bright environment or in daylight, the human eye has a maximum spectral sensitivity to 555 nm, that is to say to a yellow-green hue. In a dark environment or at night, the maximum spectral sensitivity of the human eye is shifted towards blue hues. Therefore, mirrors with high reflectivity in the blue spectral range are very suitable for day and night. Also f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R1/08G02B5/10C03C17/36C03C17/42C23C14/06C23C14/08C23C14/18C23C14/56
CPCC03C17/36C23C14/185C03C17/3618C23C14/568C23C14/0652C03C17/3649C23C14/584C03C2218/36C03C17/3663C03C2217/73C23C14/083C03C17/42C03C17/3626B60R1/08G02B5/10
Inventor J·辛格W·朗W·富卡勒克
Owner MEKRA LANG GMBH & CO KG