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Kristina M. Johnson

Polarization-Control Technology

Patent No. 5,132,826

Kristina Johnson is widely recognized as a pioneer in optoelectronic processing systems, 3D imaging, and color management systems. At the University of Colorado (CU) and Duke, she produced work that has formed the basis for 3D films, rear projection systems for televisions, digital mammograms, faster screening of pap smears for cervical cancer, and foundational work that has resulted in near-to-the-eye displays.

Johnson and Gary Sharp at CU worked on birefringent materials, which are materials whose refractive index depends on the polarization and propagation direction of light. The most visible applications of birefringent filters has been in the entertainment and electronics industries. Together, Johnson and Sharp co-founded ColorLink, Inc. to commercialize their color polarizer technology, and in 2007, the company was sold to RealD, a leader in the 3D imaging field.

A graduate of Stanford for her B.S., M.S., and Ph.D. degrees, Johnson has promoted broadening participation in science and math education for women and underrepresented groups in science and engineering. She has held positions at Duke, Johns Hopkins, and served as the Under Secretary for Energy at the U.S. Department of Energy. She is currently CEO of Cube Hydro Partners which focuses on the advancement of hydroelectric power.

Patent Number

Born: May 7, 1957

Ferroelectric Liquid Crystal Tunable Filters and Color Generation

Patent No. 5,132,826

Issued July 21, 1992

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