Company Filing History:
Years Active: 1990
Title: The Innovations of John N. Cederquist
Introduction
John N. Cederquist, based in Ann Arbor, MI, is a notable inventor recognized for his contributions to the fields of imaging and optical technology. With a total of two patents to his name, Cederquist's inventions showcase innovative methods that enhance various imaging processes.
Latest Patents
Cederquist's latest patents include the "Aperture Sampling Coherence Sensor and Method," which plays a significant role in speckle imaging. This technology effectively removes the contribution of non-uniform and incoherent background illumination through an aperture sampling technique. By producing a pair of uncorrelated speckle images that are subtracted from one another, this method eliminates the non-coherent background, providing a clear signal suitable for real-time video display. This advancement enables enhanced visualization of vibrational modes and surface roughness mapping, markedly improving the clarity of speckle images.
Another significant patent by Cederquist is the "Multicolor Holographic Element and Apparatus for Head-Up Display." This invention focuses on creating multicolor holographic optical elements ideal for head-up display (HUD) systems. These systems are designed to allow for the reconstruction of wavefronts using all readout beams originating from a single direction. Cederquist outlines several methods for producing multicolor holographic optical elements, which control diffraction efficiency and displayed colors, thereby ensuring that the Bragg condition is met for each wavelength, leading to a bright and uniform multicolor wavefront reconstruction.
Career Highlights
Cederquist is currently associated with the Environmental Research Institute of Michigan, where he has been actively involved in pioneering research and technological advancements. His role has significantly impacted the imaging technology sector, pushing the boundaries of what is achievable in optical devices.
Collaborations
Throughout his career, John N. Cederquist has collaborated with fellow innovator Anthony M. Tai. Together, they have contributed to improving optical technologies, emphasizing the importance of teamwork in advancing scientific research and product development.
Conclusion
John N. Cederquist stands out as an influential figure in the realm of optical technology through his patents and collaborative efforts. His innovative approaches to speckle imaging and holographic displays not only contribute to the existing body of knowledge but also pave the way for future advancements in imaging techniques. With his expertise, Cederquist continues to make a lasting impact in his field.