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Rearview mirror assemblies with anisotropic polymer laminates

A technology of rearview mirror components and anisotropic films, applied in vehicle parts, nonlinear optics, instruments, etc.

Active Publication Date: 2014-08-27
GENTEX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The specific challenge posed by display technology in the automotive environment is to provide the driver with sufficient brightness to see the display clearly while providing the driver with a clear, undistorted image, especially in daunting ambient light conditions. Reflects the field of view of the rear and surrounding scenes

Method used

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  • Rearview mirror assemblies with anisotropic polymer laminates
  • Rearview mirror assemblies with anisotropic polymer laminates
  • Rearview mirror assemblies with anisotropic polymer laminates

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Embodiment Construction

[0036] definition . As used in this specification and drawings, unless the context requires otherwise, the following terms shall have the indicated meanings:

[0037] "Laminate" generally refers to a composite material manufactured by the joining of two or more components, while the term "lamination" refers to the process by which such a material is made. Within the meaning of the term "laminate", the parts may or may not share a material composition and may be subjected to different forms of processing, such as directional stretching, embossing or coating. Examples of laminates using different materials include applying a plastic film to a support material such as glass or sealing the plastic film between two support layers, where the support layer may comprise glass, plastic or any other suitable material.

[0038] An "imaging" or "image preserving" reflector is one that forms a substantially undistorted image in specularly reflected light. In imaging, optical distortion...

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Abstract

The present invention relates to anisotropic film laminates and related methods of manufacture for image-retaining reflectors, such as automotive rearview mirror assemblies. The film may include anisotropic layers such as light polarizing layers and other functional layers. The film with controlled water content is heated under omnidirectional pressure and vacuum to a temperature substantially equal to or greater than the lower end of the glass transition temperature range of the film to be laminated to the substrate. The laminate is configured as part of a mirror structure to increase the contrast between light generated by a light source located behind the mirror structure and light transmitted through the mirror structure toward a viewer. The mirror structure is free of any spreading distortion and is characterized by SW and LW values ​​which are less than 3, more preferably less than 2, most preferably less than 1.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 079,668, filed July 10, 2008, and US Provisional Application No. 61 / 093,608, filed September 2, 2008. This application also claims the benefit of US Patent Application No. 12 / 191,804, filed August 14, 2008 (now, published as U.S. 2009 / 0002822). The contents of each of the above applications are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to polymer-based film laminates, and more particularly, to automotive rear view mirrors comprising a laminate comprising a polymer-based film structure having an optically anisotropic layer. Background technique [0004] The mirror assembly has proven to be a convenient location for providing useful information to the driver. For example, a video display positioned behind but visible through a portion of a mirror may provide the driver with a video i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/153
CPCG02F1/133536B60R1/088G02F1/153
Inventor J·S·安德森W·L·汤纳H·A·卢藤G·A·诺曼G·J·多泽曼T·G·摩根
Owner GENTEX CORP