CANCELED - OSC Colloquium: Mark Shand

shand talk


3:30 to 5 p.m., March 16, 2023



As one of the primary ways we perceive the world the human visual system seems very familiar. However, under the hood there are numerous aspects of it that are often under-appreciated, and the details of which offer interesting insights into both the eye as an optical system and the design of information displays. Likewise optical radiation safety standards which can seem quite complex and almost arbitrary, on closer inspection are generally found to be firmly grounded in the details of the eye's construction. This talk will begin with an overview of the eye and the human visual system. We then proceed to a discussion of how this influences the design information display devices. Finally we conclude with a discussion of optical radiation hazards to the eye, and the methods to assess them, particularly the IEC standards 60825 and 62471.

Mark Shand holds a PhD in Computer Science from the University of Sydney (1988) and a Master of Optical Science from the University of Arizona (2022). He held research positions at Digital Equipment Corporation, Compaq and Hewlett Packard, in Paris France and Palo Alto California. His work in this period was primarily focused on efficient computation but led to contributions in astronomical instrumentation for the Swedish Vacuum Solar Telescope and scalable visualzation systems for the DoE's ASCINIEWS program. In 2006 he joined LetltWave, a fabless semiconductor startup that developed video processing technology, as Vice President of Engineering. LetltWave was acquired by Zoran in 2008 which lead to Zoran's line of Frame Rate Conversion chips. He joined Google in 2012 where he worked initially on Google's Glass project with focus on the display and camera subsystems. In 2015 he transitioned to working on LIDAR systems for autonomous driving technology as part of the project which became Waymo LLC in 2017. Since 2017 he has served as an expert on IEC TC76 Optical radiation safety and laser equipment. He is a member of ACM, IEEE and SPIE. 

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