Optical devices and their method of assembly
AssigneeCorning Incorporated
InventorsReba S. Herndon, Ronald E. Johnson, Joshua U. Otaigbe, Joy C. Wu
Life of this patent
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Abstract
The present invention relates to a method of adhering an optically transmissive substrate to a compatible substrate such as plastic or glass and the resulting optical elements. A pressure sensitive adhesive layer, which is optically transmissive and is pre-applied to the optically transmissive substrate, eliminates many handling problems associated with liquid adhesive. Particularly preferred optical elements in accordance with the present invention are optical memory products and optical isolators with dichroic polarizers.
Claims25
A method of forming an optical element comprising the following steps:
- providing a pressure sensitive adhesive sheet which is optically transmissive and has a first and second release liner on opposing first and second side of the adhesive sheet;
- removing the release liner from the first side of the pressure sensitive adhesive sheet;
- applying the first side of the adhesive sheet to one side of an optically transmissive substrate;
- dicing said optically transmissive substrate with the pressure sensitive adhesive sheet attached thereto to a desired shape;
- removing the second release liner from the pressure sensitive adhesive sheet attached to said optically transmissive substrate;
- and
- applying the second side of the pressure sensitive adhesive sheet against a compatible substrate.
A method of forming an optical isolator comprising the following steps:
- providing a Faraday rotator having a first end and a second end;
- providing a first and a second pressure sensitive adhesive sheet, each of which is optically transmissive, has opposing first and second sides, and has a first and a second release liner on the first and second sides of the pressure sensitive adhesive sheet;
- removing the first release liner from the first side of each pressure sensitive adhesive sheet;
- applying the exposed first side of the first pressure sensitive adhesive sheet to a side of a first polarizer;
- applying the exposed first side of the second pressure sensitive adhesive sheet to a side of a second polarizer;
- dicing the first polarizer with the pressure sensitive adhesive sheet attached thereto to a desired shape;
- dicing the second polarizer with the pressure sensitive adhesive sheet attached thereto to a desired shape;
- removing the second release liner from the second side of each of the pressure sensitive adhesive sheets;
- applying the exposed second side of the first pressure sensitive adhesive sheet of the desired shape to the first end of the Faraday rotator;
- and
- applying the exposed second side of the second pressure sensitive adhesive sheet of the desired shape to the second end of the Faraday rotator.
An optical element comprising:
- a dichroic silver halide glass polarizer;
- a release liner;
- and
- a pressure sensitive adhesive sheet which is optically transmissive and is secured to and positioned between said dichroic silver halide glass polarizer and said release liner.
An optical element comprising:
- a dichroic silver halide glass polarizer;
- a compatible substrate;
- and
- a pressure sensitive adhesive sheet which is optically transmissive and is secured to and positioned between said dichroic silver halide glass polarizer and said compatible substrate;
- wherein said compatible substrate is formed of a synthetic resin.
Dependencies are inferred from the claim text.