Asahi Kasei Kabushiki Kaisha

Luminit LLC

Edward M Kaiser

Engin B Arik

Kang S Lee

Stanley Tafeng Kao

Leo Katsenelenson

Thomas C Forrester

Tomasz P Jannson

Gajendra D Savant

Thomas L Forrester

Kevin H Yu

Philip Yi Zhi Chu

San Zhuang Wang

Nanda Nathan

The present disclosure reveals a reflective, front-projection screen designed to faithfully and accurately display the images from state-of-the-art (SOTA) and next-generation 2D and 3D motion-picture projectors, such as those found in large-capacity public movie theaters, home theaters, offices, and for use with portable projection systems for consumer and commercial applications. In particular it discloses cinema-size light shaping 3D projection screens with front-surface microstructures and horizontal viewing angles in the range of 90 to 120 degrees.

Projection screen for displaying two-dimensional and three-dimensional motion pictures and method of use thereof

A method and system referred to as PALM (Patterning by Adhesive of Large Relief Three-Dimensional Microstructures) with large reliefs exceeding 1 &#x3bc;m and being as large as 100 &#x3bc;m. The microstructures can be either deterministic (such as microprisms), or random (such as diffusers), the first obtained by copying an original supermaster, and latter obtained by copying a laser speckle pattern. The master process entails copying a supermaster into the form of the microstructure constituting a pattern on the patterning cylinder (called a drum), to be then continuously multiplied in the PALM system, in a continuous roll-to-roll web process. The latter method, together with the related system, is the subject of this invention. The rolls continuously repeat the master pattern, copying by adhesive with large viscosity on acrylic (hybrid) as well as by a monolithic process. The monolithic process can be accomplished using temperature and pressure, or by UV-cured polymerization. Therefore, the invention comprises three alternative processes: one, hybrid (adhesive on acrylic), and two monolithic ones. In the PALM (hybrid) process, an epoxy is wet-coated on film substrates such as polycarbonate (PC), polyester (PET), (PE), or other flexible material. The adhesive, in liquid form, is applied to the substrate by a self-metered coating sub-process. In the present invention, the adhesive is used for forming the microstructure pattern. The microstructure pattern is replicated from a master roll or image drum onto a coating roll.

Roll-to-roll method and system for micro-replication of a pattern of large relief three-dimensional microstructures

Hollow, cylindrical, seamless metal master for producing seamless diffuser sheets of preselected length and width. Additional aspects of the invention include a hollow cylindrical seamless invertable elastomeric master and method of making the same and an apparatus and process for effecting variable diffuser recording in photosensitive medium.

Seamless master and method of making same

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Redondo Beach, CA, United States of America

Edward M Kaiser