Windscreen For Automobile

• US 20080129073A1
• Filed: 09/09/2005
• Published: 06/05/2008
• Est. Priority Date: 09/28/2004
• Status: Abandoned Application

• Current Assignee: Central Glass Company Limited
• Original Assignee: Central Glass Company Limited
• Inventors: Nishikawa, Shinji
• Application Number:
  US11/629,096
• Publication Number:
  US 20080129073A1
• Time in Patent Office: Days
• US Class Current: 296/84.1
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10293 Edge features, e.g. inserts or holes
• CPC Class Codes: B32B 17/10458 Polarization selective transmission
• CPC Class Codes: B32B 17/10678 comprising UV absorbers or stabilizers, e.g. antioxidants
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2250/02 2 layers
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B60J 1/02 arranged at the vehicle front , e.g. structure of the glazing, mounting of the glazing on windscreen mounted antenna wire H01Q1/1271
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• CPC Class Codes: G02B 2027/0194 with combiner of laminated type, for optical or mechanical aspects
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00

Abstract

In automotive front windshields used for head-up display, there is provided an automotive front windshield characterized in that two plate glasses of an interior side and an exterior side are bonded to each other by using two interlayer films, that an optical functional film prepared by laminating an optical rotatory member in the form of film is inserted into the two interlayer films, and that the optical functional film has a thickness of 12 μm to 22 μm.

Claims

1. In an automotive front windshield used for head-up display, the automotive front windshield characterized in that two plate glasses of an interior side and an exterior side are bonded to each other by using two interlayer films, that an optical functional film prepared by laminating an optical rotatory member in the form of film is inserted into the two interlayer films, and that the optical functional film has a thickness of 12 μ

m to 22 μ

m.

2. The automotive front windshield according to claim 1, which is characterized in that the optical rotatory member has a thickness of 4 μ

m to 5 μ

m.

3. The automotive front windshield according to claim 1, which is characterized in that a total thickness of the two interlayer films is 760 μ

m or greater.

4. The automotive front windshield according to claim 1, which is characterized in that the interior side interlayer film has a thickness of 380 μ

m or greater, and that the exterior side interlayer film has a thickness that is one to two times that of the interior side interlayer film.