Lauri Sainiemi

Title: Lauri Sainiemi: Innovator in Optical Display Technology

Introduction

Lauri Sainiemi is a notable inventor based in Espoo, Finland. He has made significant contributions to the field of optical display technology, holding a total of 7 patents. His work focuses on enhancing the performance and efficiency of optical systems, particularly through the development of innovative diffractive optical elements.

Latest Patents

One of Sainiemi's latest patents involves diffractive optical elements with asymmetric profiles. In an optical display system that includes a waveguide with multiple diffractive optical elements (DOEs), the gratings in one or more of the DOEs may have an asymmetric profile, where the gratings can be slanted or blazed. These asymmetric gratings can provide increased display uniformity by reducing the 'banding' that results from optical interference, which often appears as dark stripes in the display. This issue is particularly pronounced when polymeric materials are used in volume production of the DOEs to minimize system weight, despite their less optimal optical properties compared to materials like glass. The introduction of asymmetric gratings allows the optical system to be more tolerant to variations in thickness, surface roughness, and grating geometry, which may not be easily controlled during manufacturing, especially since these variations are in the submicron range.

Career Highlights

Throughout his career, Lauri Sainiemi has worked with prominent companies in the technology sector. Notably, he has been associated with Microsoft Technology Licensing, LLC and Licentia Oy. His experience in these organizations has contributed to his expertise in optical technologies and patent development.

Collaborations

Sainiemi has collaborated with several professionals in his field, including Tuomas Vallius and Tapani Levola. These collaborations have likely enriched his work and led to innovative advancements in optical display systems.

Conclusion

Lauri Sainiemi is a distinguished inventor whose work in optical display technology has led to significant advancements in the field. His innovative patents and collaborations reflect his commitment to improving optical systems and enhancing display performance.