Novel polarizing products and processes for their preparation

• US 3,208,902 A
• Filed: 05/05/1961
• Issued: 09/28/1965
• Est. Priority Date: 05/05/1961
• Status: Expired due to Term

• Current Assignee: James L. Bailey, Lester H. Arond
• Original Assignee: James L. Bailey, Lester H. Arond
• Inventors: Arond, Lester H., Bailey, James L.
• Application Number:
  US04/107,895
• Time in Patent Office: 1,607 Days
• US Class Current: 428/336
• CPC Class Codes: B29D 11/00 Producing optical elements, e.g. lenses or prisms grinding or polishing of optical elements B24B; constructional form of optical elements G02B; optical parts of spectacles G02C7/00
• CPC Class Codes: B29D 11/00634 Production of filters
• CPC Class Codes: B29D 11/0073 Optical laminates
• CPC Class Codes: B29D 11/0074 Production of other optical elements not provided for in B29D11/00009- B29D11/0073
• CPC Class Codes: B29K 2995/0032 Birefringent
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: C08J 2329/04 Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
• CPC Class Codes: C08J 5/124 using adhesives based on a macromolecular component
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: G02B 5/3083 Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31518 Next to glass or quartz
• CPC Class Codes: Y10T 428/31525 Next to glass or quartz
• CPC Class Codes: Y10T 428/31725 Of polyamide

Claims

1. A LAMINATION COMPRISING A PLURALITY OF TRANSPARENT ELEMENTS, HAVING SANDWICHED THEREBETWEEN AND BONDED THERETO A SHEET-LIKE OPTICAL ELEMENT COMPRISING POLYVINYL ALCOHOL, SAID TRANSPARENT ELEMENTS AND SAID POLYVINYL ALCOHOL OPTICAL ELEMENT BEING BONDED BY A CROSS-LINKED EPOXY POLYMER.