Andrew Graham

Title: The Innovations of Andrew Graham

Introduction

Andrew Graham is a notable inventor based in Chieming, Germany. He has made significant contributions to the field of position measurement technology. With a total of 2 patents, his work reflects a commitment to advancing measurement precision and efficiency.

Latest Patents

One of Andrew's latest patents is a position-measuring device that includes a first scale and a second scale arranged end-to-end to extend across a measurement range. This device features a scanning unit with a light source that emits a light beam. The first scale incorporates a reflective phase grating with first periodic marks that diffract the incident light beam into a predetermined diffraction order with a specific diffraction efficiency. The second scale also includes a reflective phase grating with second periodic marks that differ in shape from the first. Notably, the reflectivity of the phase grating of the second scale is reduced compared to that of the first scale, allowing it to diffract the incident light beam effectively.

Another significant patent is a measuring graduation designed for a photoelectric position measuring device. This device measures positions in both a first direction and a second direction that extends orthogonally to the first. The phase grating features a periodic array of grating elements in both directions. Each grating element has an outer contour formed by a continuous line, which includes two mutually opposing first straight edges and two mutually opposing second straight edges. The connecting lines between these edges form an obtuse angle, enhancing the device's measurement capabilities.

Career Highlights

Andrew Graham is currently employed at Dr. Johannes Heidenhain GmbH, a company known for its innovative measurement technology. His work at this organization has allowed him to develop and refine his inventions, contributing to the company's reputation in the industry.

Collaborations

Andrew collaborates with talented coworkers, including Peter Speckbacher and Josef Weidmann. Their combined expertise fosters a creative environment that drives innovation in measurement technology.

Conclusion

Andrew Graham's contributions to position measurement technology through his patents and work at Dr. Johannes Heidenhain GmbH highlight his role as a significant inventor in the field. His innovative devices continue to push the boundaries of measurement precision and efficiency.