Adhesives inhibiting formation of artifacts in polymer based optical elements
Assignee3M Innovative Properties Company
InventorsJames P. DiZio, Maureen C. Nelson, Kathleen E. Hoelscher, Beverly J. Blake, Erin L. Coleman, Charles L. Bruzzone
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Abstract
Inhibiting formation of optical artifacts in a multi-layer film polarizer of an optical imaging assembly that includes a polarizing beam splitter. The beam splitter may include a multilayer reflective polarizing film having at least two materials, one of which may exhibit birefringence after uniaxial orientation; an adhesive disposed on the multilayer reflective polarizing film; and at least a first prism disposed on the adhesive. The adhesive may include a plasticizer for inhibiting formation of optical artifacts in the polarizing film.
Claims5
A method of forming a polarizing beam splitter, the method comprising:
- providing a first prism;
- providing a second prism;
- providing a multilayer reflective polarizing film;
- attaching the multilayer reflective polarizing film to the first prism with a first adhesive, the first adhesive comprising at least 10 weight percent, and below 15 weight percent, of a crystallization inhibiting plasticizer component for inhibiting formation of (i) crystallized domains;
- (ii) particles;
- or (iii) a combination thereof;
- attaching the multilayer reflective polarizing film to the second prism with a second adhesive to form an assembly;
- and
- curing the assembly.
Dependencies are inferred from the claim text.