1
Sanford Cobb Jr, Mark E Gardiner, Keith M Kotchick, Kazuhiko Toyooka, William A Hibbard: Variable pitch structured optical film. 3M Innovative Properties Company, Stephen W Buckingham, July 6, 1999: US05919551 (172 worldwide citation)

The present invention includes a structured optical film with variable pitch peaks and/or grooves to reduce the visibility of moire interference patterns and optical displays incorporating one or more layers of the film. The pitch variations can be over groups of adjacent peaks and/or valleys or bet ...


2
Bettie C Fong, Wade D Kretman, Keith M Kotchick, Sanford Cobb Jr, Richard A Miller, Todd R Williams, Kazuhiko Toyooka: Brightness enhancement article. 3M Innovative Properties Company, Stephen W Buckingham, August 28, 2001: US06280063 (144 worldwide citation)

A brightness enhancement article that includes: (a) a transparent, flexible substrate; (b) a first major surface having an array of prisms with blunted or rounded peaks characterized by a chord width, cross-sectional pitch width, and radius of curvature in which the chord width is equal to about 20- ...


3
Kazuhiko Toyooka: Optical laminated bodies, lighting equipment and area luminescence equipment. 3M Innovative Properties Company, Anna A Kobilansky, December 6, 2005: US06972813 (26 worldwide citation)

Lighting devices are disclosed that include optical laminated bodies. An exemplary optical laminated body includes a polarizing layer, a first transparent film disposed closely to a front surface of the polarizing layer and a second transparent film disposed closely to a back surface of the polarizi ...


4
Kazuhiko Toyooka: Hollow surface illuminator. 3M Innovative Properties Company, Stephen W Buckingham, October 26, 2004: US06809892 (13 worldwide citation)

A light-conducting unit which can effectively balance the light-leaking effect and the light-propagation effect of the prismatic films forming the light-conducting space, and satisfy the requirements to reduce the weight of the unit is disclosed. A light-conducting unit comprising the first prismati ...


5
Kazuhiko Toyooka: Optical laminated bodies, lighting equipment and area luminescence equipment. 3M Innovative Properties Company, Jay R Pralle, March 31, 2009: US07511783 (2 worldwide citation)

Lighting devices are disclosed that include optical laminated bodies. An exemplary optical laminated body includes a polarizing layer, a first transparent film disposed closely to a front surface of the polarizing layer and a second transparent film disposed closely to a back surface of the polarizi ...


6
Kazuhiko Toyooka, Masaki Yamamuro, Hiroki Matsuda: Surface illuminant device. 3M INNOVATIVE PROPERTIES COMPANY, Lisa P Fulton, August 23, 2016: US09423549

A surface light source device capable of obtaining uniform and high brightness emitted light is disclosed. The surface light source device can include a light source (11) that emits light; a light guiding plate (12) that guides light from the light source that is incident on a rear surface side ther ...


7
Kazuhiko Toyooka, Hiroki Matsuda, Masaki Yamamuro, James A Thielen, Jayant Chakravarty, Eric W Nelson, John A Wheatley: Display with nonwoven diffuser. 3M INNOVATIVE PROPERTIES COMPANY, Lisa P Fulton, November 15, 2016: US09494817

The present disclosure describes a display system including a liquid crystal display panel and a light source emitting light capable of emitting light. A nonwoven diffuser element is disposed between the light source and the liquid crystal display panel. The polymeric nonwoven diffuser is non-orient ...


8
Kazuhiko Toyooka: Optical laminated bodies, lighting equipment and area luminescence equipment. 3M Innovative Properties Company, 3m Innovative Properties Company, February 3, 2005: US20050024558-A1

To provide an optical laminated body which can reduce the number of parts, thereby to simplify an operation of incorporating parts in the production of an optical laminated body, and which can reduce the number of optical surfaces of the optical system as possible, thereby to prevent optical loss by ...


9
Kazuhiko Toyooka: Hollow surface illuminator. January 22, 2004: US20040012943-A1

A light-conducting unit which can effectively balance the light-leaking effect and the light-propagation effect of the prismatic films forming the light-conducting space, and satisfy the requirements to reduce the weight of the unit is disclosed. A light-conducting unit comprising the first prismati ...