ADHESIVES INHIBITING FORMATION OF ARTIFACTS IN POLYMER BASED OPTICAL ELEMENTS
First Claim
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1. A polarizing beam splitter, comprising:
- a polymer based polarizing film;
an adhesive layer disposed on the polarizing film; and
a first optical element disposed on the adhesive layer, wherein the adhesive layer comprises a crystallization inhibiting plasticizer component in an amount effective for inhibiting formation of (i) crystallized domains;
(ii) particles;
or (iii) a combination thereof, that cause optical artifacts in the polarizing film.
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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.
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Citations
24 Claims
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1. A polarizing beam splitter, comprising:
- a polymer based polarizing film;
an adhesive layer disposed on the polarizing film; and
a first optical element disposed on the adhesive layer, wherein the adhesive layer comprises a crystallization inhibiting plasticizer component in an amount effective for inhibiting formation of (i) crystallized domains;
(ii) particles;
or (iii) a combination thereof, that cause optical artifacts in the polarizing film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17)
- a polymer based polarizing film;
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9. An optical apparatus comprising:
- a polymer based optical element;
an adhesive disposed on the optical element;
wherein the adhesive comprises a crystallization inhibiting plasticizer component in an amount effective for inhibiting formation of (i) crystallized domains;
(ii) particles;
or (iii) a combination thereof in the optical element that cause optical artifacts in the optical element.
- a polymer based optical element;
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10. A transparent adhesive composition comprising a crystallization inhibiting plasticizer component in an amount effective for inhibiting formation of (i) crystallized domains;
- (ii) particles;
or (iii) a combination thereof, that cause optical artifacts in an adjacent polymer based optical element. - View Dependent Claims (11, 12, 13, 14)
- (ii) particles;
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15. A polarizing beam splitter comprising:
- (a) a birefringent film comprising a plurality of first material layers and a plurality of second material layers, wherein the first material layers comprise a polymer selected from a group consisting of polyethylene terephthalate and copolymers of polyethylene terephthalate and polyethylene naphthalate and the second material layers comprise a copolyester;
(b) at least one prism comprising a base adjacent a first major surface of the birefringent film; and
, (c) an adhesive disposed between the first major surface and the birefringent film, wherein the adhesive comprises at least a crystallization inhibiting plasticizer in an amount effective for controlling the migration of the plasticizer to at least an adjacent optical polarizing film for inhibiting crystallization in the polarizing film.
- (a) a birefringent film comprising a plurality of first material layers and a plurality of second material layers, wherein the first material layers comprise a polymer selected from a group consisting of polyethylene terephthalate and copolymers of polyethylene terephthalate and polyethylene naphthalate and the second material layers comprise a copolyester;
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18. A method of stabilizing a polymer based optical element, the method comprising:
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disposing a material on a polymer based optical element, the material comprising a crystallization inhibiting plasticizer component in an amount effective for inhibiting formation of (i) crystallized domains;
(ii) particles;
or (iii) a combination thereof, that cause optical artifacts in an adjacent polymer based optical element; and
,passing radiation through the material and the optical element. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification