This inventor holds 16 USPTO granted patents and 5 published patent applications and 3 EPO patents. Top assignees: Chromatra, LLC, Tenebraex Corporation, Polaroid Corporation. Active years: 1982-2024.
Company Filing History:
6 out of 6 
6 out of 16 
1 out of 2,176 
Years Active: 1982-2024
Title: Innovations in Imaging: The Contributions of Dennis W. Purcell
Introduction
Dennis W. Purcell is an accomplished inventor based in Medford, MA, renowned for his significant contributions to imaging technology. With a total of 16 patents to his name, Purcell has demonstrated a strong commitment to enhancing the way images are captured and processed, particularly in low-light conditions.
Latest Patents
Among his latest innovations are two notable patents focused on systems and methods for creating full-color images in low-light environments. The first patent introduces an innovative approach to generating color images from low-light scenes by utilizing a method that involves filtering light into two distinct channels: one filtered and the other unfiltered. This process allows for the creation of first and second information channels, which convey brightness information corresponding to each light channel. Ultimately, these channels are processed to produce a full-color image stream, enabling clearer imagery under challenging lighting conditions.
The second patent expands upon this technology, explaining that full-color images can be produced using only two light channels, thereby optimizing the imaging process. An array of photosensitive pixels is used where one set is sensitive to the first light channel and another set to the second. The resulting electrical signals from these pixels are combined by an image processor to generate high-quality full-color images, demonstrating Purcell's innovative prowess in technology aimed at low-light photography.
Career Highlights
Throughout his career, Dennis W. Purcell has worked with notable companies such as Tenebraex Corporation and Chromatra, LLC. His experiences in these organizations have undoubtedly influenced his inventive journey and shaped his contributions to the field.
Collaborations
Purcell has collaborated with distinguished coworkers, including Peter W. J. Jones and Ellen B. Cargill, who have contributed to the development and refinement of his patent-registered technologies. These collaborations highlight the importance of teamwork and the pooling of expertise in driving innovations forward.
Conclusion
Dennis W. Purcell's inventive achievements in the realm of imaging technology are noteworthy and impactful. His patents not only address the challenges of low-light environments but also push the boundaries of how we capture and interpret visual information. As he continues to innovate, Purcell's work stands as a testament to the possibilities that arise from the marriage of creativity and technology in the pursuit of advancement in image processing.