Jan Van Der Spiegel

Title: Jan Van Der Spiegel: Innovator in CMOS Image Sensor Technology

Introduction

Jan Van Der Spiegel is a prominent inventor based in Philadelphia, PA, known for his significant contributions to the field of image sensor technology. With a total of seven patents to his name, he has made remarkable advancements in the design and functionality of CMOS image sensors.

Latest Patents

One of his latest patents is the "CMOS linear voltage/current dual-mode imager." This innovative CMOS image sensor is capable of both voltage- and current-mode operations, selecting the mode based on the position of mode switches. Each pixel on the imager features a single transistor that acts as either a source follower for voltage readout or a transconductor for current readout. The two modes share the same readout lines but have their own correlated double sampling (CDS) units for noise suppression. A current-mode readout technique utilizing a velocity-saturated short-channel transistor is employed to achieve high linearity. The image array can be formed as a mixture of three types of pixels with identical photodiodes and access switches, with readout transistors optimally sized for their designated mode of operation.

Another notable patent is the "current/voltage mode image sensor with switchless active pixels." This high-resolution imaging sensor features a voltage and current mode active pixel design. The photo pixel consists of a photodiode and two transistors: a reset transistor and a transconductance amplifier transistor. By moving the switch transistor outside the pixel, lower pixel pitch and increased linearity of the output photocurrent are achieved. The reset and amplifier transistors can be shared among adjacent pixels through the introduction of transfer switches, enhancing the overall performance of the image sensor.

Career Highlights

Jan Van Der Spiegel has had a distinguished career, working at esteemed institutions such as the University of Pennsylvania and the Trustees of the University of Pennsylvania. His work has significantly impacted the field of imaging technology, particularly in enhancing the performance and efficiency of image sensors.

Collaborations

Throughout his career, Jan has collaborated with notable colleagues, including Viktor Gruev and Zheng Yang. These collaborations have contributed to the advancement of research and development in the field of image sensors.

Conclusion

Jan Van Der Spiegel's innovative work in CMOS image sensor technology has led to significant advancements in the field. His contributions continue to influence the development of high-performance imaging systems