Company Filing History:
Years Active: 1997-1999
Title: Innovations of Paul B Christie
Introduction
Paul B Christie is a notable inventor based in New York, NY (US). He has made significant contributions to the field of projection technology, holding 2 patents that showcase his innovative approach to enhancing visual experiences.
Latest Patents
One of his latest patents is the "High Efficiency Light Valve Projection System." This invention involves a light valve, such as an active matrix LCD, positioned between crossed polarizers. It utilizes individual transistors to control each pixel area of the LCD, along with storage elements to retain video signal data for each pixel. The design incorporates optically shielded dead spaces between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through. A bright independent light source illuminates the system, creating a video image projected via specialized optics onto a screen without distortions, regardless of the projection angle.
The invention also features heat sinks, IR reflective coatings, heat-absorbing optics, and a thermistor-controlled pixel transistor bias voltage injection servo circuit. These elements work together to stabilize image performance, ensuring accurate color and contrast levels as the LCD temperature changes. In one embodiment, a multi-color LCD with a stepped cavity is used, producing varying thicknesses of LCD for different wavelengths, which allows for true black, high contrast, and CRT-like color rendition. A dichroic mirror arrangement overlaps differently colored pixels in the projected image, while striped mirrors duplicate pixels to eliminate spaces, creating a continuous image without apparent stripes or dots. Additionally, a special venetian-blind type of screen is disclosed, along with methods for viewing three-dimensional video.
Career Highlights
Paul B Christie is associated with Projectavision Incorporated, where he continues to innovate in the field of projection technology. His work has significantly impacted the way visual media is presented and experienced.
Collaborations
He has collaborated with notable coworkers, including Eugene Dolgoff and Malcolm J MacFarlane, contributing to advancements in their shared field of expertise.
Conclusion
Paul B Christie is a distinguished inventor whose work in projection technology has led to innovative solutions that enhance visual experiences. His contributions continue to influence the industry and inspire future advancements.