Pieter P Brouwer

Title: Pieter P Brouwer: Innovator in Imaging Technology

Introduction

Pieter P Brouwer is a notable inventor based in Dordrecht, Netherlands. He has made significant contributions to the field of imaging technology, holding a total of 2 patents. His work focuses on enhancing the functionality and quality of charge-coupled devices (CCDs) used in various imaging applications.

Latest Patents

Brouwer's latest patents include a charge-coupled imaging device that features an adjustable aspect ratio. This innovation allows for the adjustment of the width/height ratio in charge-coupled imaging devices. By selectively using columns on either side of the imaging matrix, the aspect ratio can be reduced from 16/9 to 4/3, which is particularly relevant for widescreen televisions. However, it has been observed that this reduction can impair the quality of the imaging device in the 4/3 mode. To address this, Brouwer's invention utilizes an FT device with a 4/3 aspect ratio, operating as a 4-phase CCD in that mode. Additionally, to achieve the 16/9 aspect ratio, the height of the device is reduced by not using selected lines, allowing the sensor matrix to function as a 3-phase CCD. This innovative approach maintains the width while ensuring the number of lines in the vertical direction remains constant.

Another significant patent involves an optical low-pass filter arrangement in a camera that includes an image sensor. This arrangement features a first birefringent optical filter element with a frequency response that has a trap point at the sampling frequency of the image sensor. A second birefringent optical filter element is also included, which has two frequency trap points, enhancing the overall imaging quality.

Career Highlights

Brouwer is associated with U.S. Philips Corporation, where he has contributed to various advancements in imaging technology. His work has been instrumental in developing devices that improve image quality and functionality.

Collaborations

Throughout his career, Brouwer has collaborated with notable colleagues, including Petrus G Centen and Holger Stoldt. These collaborations have further enriched his contributions to the field of imaging technology.

Conclusion

Pieter P Brouwer's innovative work in imaging technology, particularly in charge-coupled devices and optical filtering, showcases his commitment to enhancing image quality and functionality. His patents reflect a deep understanding