Optical article provided in a form suitable for direct lamination; method for manufacturing an optical device

Patent metadata

Field	Value
Publication number	US-2021325568-A1
Application number	US-202117363210-A
Country	US
Kind code	A1
Filing date	Jun 30, 2021
Priority date	Sep 29, 2015
Publication date	Oct 21, 2021
Grant date	—

Abstract

An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 μm and less or equal to 0.3 μm and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2° and less or equal to 1.2°. A method for manufacturing an optical device using said optical article.

First claim

1 . An optical article comprising:
a convex optical surface and a concave optical surface facing each other wherein:
the convex and/or the concave optical surface(s) comprise a receiving surface having an arithmetic average profile roughness, Ra, greater or equal to 0.01 μm and less or equal to 0.3 μm and/or wherein the said receiving surface has a profile roughness root mean square slope, Rdq, greater or equal to 0.2° and less or equal to 1.2°; and
the receiving surface has a mean spacing between peaks, RSM, according to following equation: RSM≥min (0.64×Ra; 0.58×Ra+0.007);
a pressure sensitive adhesive layer adhered on the receiving surface(s); and a thermoplastic film arranged on the pressure sensitive adhesive layer.

2 . The optical article as claimed in claim 1 , wherein the thermoplastic film is a multi-layered film.

3 . The optical article of claim 1 , wherein a thickness of the pressure sensitive adhesive layer is greater than or equal to 20 μm and less than or equal to 250 μm.

4 . The optical article of claim 1 , wherein a thickness of the thermoplastic film is greater than or equal to 30 μm and less than or equal to 500 μm.

5 . The optical article of claim 1 , wherein the thermoplastic film is a part of a structured film that further comprises a coating, said coating being arranged on a face of the thermoplastic film.

6 . The optical article of claim 1 , further comprising a supplementary layer on an outer surface of the thermoplastic film, wherein the supplementary layer comprises at least one of a thermoplastic film, a hard coat layer, a primer layer, a tinting layer, a photochromic layer, a polarized layer, a liquid crystal-layer, an electro-chromic layer, an anti-static layer, an anti-reflective layer, a tinted layer, a selective filter for filtering one or more wavelength ranges, a top coat layer, an anti-smudge, an anti-fog layer, an anti-rain layer, a hydrophobic layer or a combination thereof.

7 . The optical article of claim 1 , wherein the thermoplastic film further comprises at least one of a dye, a pigment, an absorber, or a photochromic dye.

8 . The optical article of claim 7 , wherein the dye, a pigment, an absorber, or photochromic dye imparts an optical property onto the thermoplastic film.

9 . The optical article of claim 1 , wherein the pressure sensitive adhesive layer further comprises at least one of a dye, a pigment, an absorber, or a photochromic dye.

10 . The optical article of claim 9 , wherein the dye, a pigment, an absorber, or photochromic dye imparts an optical property onto the pressure sensitive adhesive layer.

Assignees

• Essilor Int

Inventors

• Gacoin Eric
• Marchal Jeanne
• Saulny Jonathan
• De Sousa Manuela
• Felten Yohann

Classifications

• B29D11/00865

  Applying coatings; tinting; colouring (printing, marking or copying processes B41M; identification in general G09F3/00; producing decorative effects in general B44C; positioning or marking of lenses B24B13/0055) · CPC title

• B29D11/00009

  Production of simple or compound lenses · CPC title

• G02B1/041 Primary

  Lenses · CPC title

• B29D11/00961

  using microprocessors or computers · CPC title

• G02C2202/16

  Laminated or compound lenses · CPC title