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A method for manufacturing vehicle mirrors

A technology for rearview mirrors and vehicles, which is applied to the coating of vehicle components, mirrors, superimposed layers, etc., and can solve problems such as reducing the reflection quality of rearview mirrors and changing reflection characteristics

Inactive Publication Date: 2007-09-26
MEKRA LANG GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting reflective properties of the resulting curved mirror are adversely altered reducing the reflective quality of the mirror

Method used

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  • A method for manufacturing vehicle mirrors
  • A method for manufacturing vehicle mirrors

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Experimental program
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Embodiment Construction

[0019] The present invention will be described in more detail below with reference to FIGS. 1 and 2 .

[0020] According to one embodiment of the invention, a first step is that the carrier substrate 1 is manufactured from plastic with a curved substrate surface 6 for receiving the mirror coating. This can be accomplished by molding, as shown in step 10, by spraying, injecting or casting thermoplastic polymers, or by curing foam. Afterwards, as shown in step 12, the carrier substrate 1 can still be reworked into its final form by grinding, trimming, etc., before the mirror coating is applied to the curved substrate surface 6.

[0021] Once the carrier substrate 1 is structured and set in its final form, the mirror coating can be deposited onto the carrier substrate by a sputtering application method. In order to deposit a thin first chromium layer 2, as shown in step 14, a voltage is applied in a known manner in a vessel filled with an inert gas, so that the chromium atoms dr...

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Abstract

Molding a carrier base from plastic having a curved base surface formed into a fixed shape prior to receiving a mirror coating. Sputtering a first mirror coating layer selected of chromium onto the curved base surface, wherein the first layer has a light reflectivity in the range of approximately 60% to 65% of visible electromagnetic radiation. Sputtering a second mirror coating layer of aluminum onto the first layer so that the second layer has a light reflectivity of at least about 80% of visible electromagnetic radiation and a maximum thickness of approximately 20 % of the thickness of the first layer. The first and second mirror coating layers are applied to the curved base surface to have a combined layer thickness in the range of approximately 5mm to 1µm. Applying an anti-scratch coating onto the second mirror coating layer to resist damage to the first and second mirror coating layers.

Description

technical field [0001] The present invention relates to vehicle rear view mirrors, and more particularly to a method for manufacturing a curved plastic vehicle rear view mirror with enhanced reflective properties. Background technique [0002] Rearview mirrors for vehicles are produced on a large scale by a process whereby a thin layer of chrome, aluminum, silver or another similar light reflective metal and usually an adhesive is deposited on the metal from a vaporized state. Or on the body of the glass, which acts as a carrier substrate. Disadvantageously, the metal or glass body acting as the carrier plate is heavy and, for the finished rearview mirror, expensive to manufacture. In addition, carrier plates made of metal or glass substances do not have the ability to deform elastically, for example in the event of a crash. [0003] Due to these limitations, it is known to be advantageous to use rear view mirrors with a carrier base made of lightweight plastic. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08B60R1/00C23C14/34C23C14/14
CPCC23C14/025C23C28/00C23C28/023C23C28/021C23C14/584C23C14/205B60R1/02B60R1/00
Inventor 维尔纳·朗约亨·鲍尔维利·费尔宾格鲁道夫·迈尔
Owner MEKRA LANG GMBH & CO KG