Malcolm Thackray

Title: Innovations of Malcolm Thackray

Introduction

Malcolm Thackray is a notable inventor based in Menlo Park, California. He has made significant contributions to the field of radiographic imaging, holding a total of four patents. His work focuses on enhancing the quality and efficiency of imaging techniques, particularly in the context of underexposed films.

Latest Patents

Thackray's latest patents include a "Method for intensification and reflective read-out of underexposed film." This invention involves a process that converts a metallic silver particle image into a highly reflective image. The film is placed in a black-walled cavity that may contain a particle-free liquid, such as water. A laser beam raster scans the image, and the light reflected is detected by a photomultiplier. The output from the photomultiplier is digitized and stored for further computer enhancement and display.

Another significant patent is the "Semiconductor-gated ionographic method and apparatus." This invention describes a radiographic imaging method that utilizes a gas gap formed between closely spaced dielectric and photoconductor surfaces. A uniform strength electric field is applied across this gap, and counting gas is supplied. When penetrating radiation, such as X-ray radiation, is directed onto the photoconductor, it induces electron-hole pairs, resulting in increased localized conductivity. This process enhances charge transfer in the gas gap, ultimately producing a charge image on the dielectric imaging surface.

Career Highlights

Malcolm Thackray has had a distinguished career at SRI International, where he has been instrumental in developing innovative imaging technologies. His work has significantly advanced the field of radiography, providing new methods for improving image quality and diagnostic capabilities.

Collaborations

Thackray has collaborated with notable colleagues, including Richard R. Pettijohn and Ivor Brodie. These collaborations have contributed to the development of cutting-edge technologies in the imaging sector.

Conclusion

Malcolm Thackray's contributions to radiographic imaging through his innovative patents have made a lasting impact on the field. His work continues to influence advancements in imaging technology, showcasing the importance of innovation in enhancing diagnostic methods.