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US 6,284,088 B1Granted
Method and apparatus for bonding optical films in precision alignment
AssigneeRockwell Collins, Inc.
InventorsJames D. Sampica, Mel L. Campbell, Dennis M. Ternes, Paul R. Nemeth
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Abstract
A system and method for fabricating multi-layer optical compensators which includes a rigid or flexible planar guide member having reference lines thereon for aiding in alignment of successive layers and further having a vacuum producing capability which stabilizes the compensator when it is processed, along with the guide member, through a roller machine.
Claims14
An apparatus comprising:
- a roller and support member combination, having disposed therebetween said first optical retardation film;
- and,
- a horizontal ruled grid plate, having a plurality of reference features thereon, said ruled grid plate disposed between said roller and support member and adjacent to said first optical retardation film, where said ruled grid plate provides an aid for precision horizontal alignment of said first optical retardation film with respect to said plurality of reference features;
- and,
- said second optical retardation film disposed in a vertically layered configuration between said first optical retardation film and said ruled grid plate, where said second optical retardation film has a horizontal alignment characteristic with said plurality of reference features.
2 more elements
A method of bonding a plurality of optical films with a predetermined alignment characteristic, said method comprising the steps of:
- providing a first roller and support member combination;
- providing a first optical film, having a first axis associated therewith;
- providing a rigid ruled guide between said roller and support member, having registration lines thereon;
- providing a second optical film, having a second axis associated therewith and further having an orientation characteristic with respect to said first optical film which is achieved through orientation of said first axis and said second axis with respect to said registration lines;
- and,
- providing a roller induced pressure to said second optical film, so as to bond to said first optical film.
3 more elements
Dependencies are inferred from the claim text.