Solving the most challenging technical problems in future Immersive AR Displays and Architectures

• Technical Lead of a New Technology Integration (NTI) optical module. Module provides use cases not possible in todays HMDs. Project involved extreme XFN teamwork across the org. Built reputation of moving fast in a highly ambiguous environment, while not sacrificing on technical excellence• Admin and Creator of Meta Reality Labs internal Opto-Mechanical Engineering group where I provide content and guidance to help increase the orgs engineering excellence in component design, drawing creation, system and components functional requirement derivations, and STOP analysis best practices. Group has grown from 1 member to hundreds in < 1 year.Summary• Research and development of next generation AR/VR systems.• Lead cross-functional research efforts in the development of vision camera systems, optical metrology systems, wavelength and power characterization systems, refractive and diffractive systems, adaptive optics, and calibration systems.• Successful track record leading XFN teams in delivering eye tracking and varifocal modules for optical system test and integration. Major Contributions• Delivered Orion’s first ever 0-1 eye tracking hardware prototype within, RL-Research, used in HW/SW data collection for optical and system performance optimization.• Delivered 0-1 varifocal module prototype in 6 months originally thought to be several years out from concept delivery.• Ground Up Architecture development of novel High Optical Dynamic Range metrology system used for varifocal module characterization. Designed, Analyzed, Fabricated, and Tested. Lead end-to-end development. • Developed bore-sight disparity and wave-front error budget accounting for eye tracking, varifocal, optical module, distortion correction, and calibration errors. Error budget is used to understand MTF and image quality degradation aligning XFN HW, SW, Optics, Sensor, and Systems Engineering teams bridging the gap between top level system and bottom level component requirements.

• Lead a team in the design and analysis of a two-axis inertially stabilized beam director and f/1 Cassegrain telescope assembly for use in a major program’s airborne laser tracking system. • Architecture development of optical, mechanical, electronics, sensors, and controls software of highly complex and sophisticated beam quality diagnostics, beam pointing closed loop system (~ nano radian precision), and beam hand-off subsystem. • Technical Control Account Manager (CAM) for a $120M account requiring management of program schedule, resources, material, vendors, and subcontracts.• Design, analysis, and test of ruggedized opto-mechanical components for a High Energy Laser (HEL) system operating in a harsh environment.• Perform Integrated Optomechanical Analysis (IOMA) and Structural Thermal Optical Performance (STOP) analysis using SigFit, Zemax, and ANSYS. • Perform top-down and bottom-up system error budget analysis for optical system jitter and wavefront error allocations.• Design and analyze ruggedized Adaptive Optics Beam Quality (BQ) Control and Pointing Control system. Calculate system design parameters for optical MTF, detector MTF, signal to noise ratio (SNR), component jitter, optical and detector cutoff frequencies, component wavefront error.• Perform system sensitivity analysis and tolerance analysis using Zemax OpticStudio. • Perform system jitter analysis using ANSYS and SigFit for platform induced random vibration.

• Leading effort in creating Multi-Physics software tools to analyze the Small Particle Heat Exchange Receiver (SPHER) using the ANSYS FLUENT Discrete Ordinates method for solving the Radiative Transfer Equations and Continuity Equations. • Create MULTI-PHYSICS MONTE-CARLO Ray Tracing software in FORTRAN coupling optical scattering, absorption, fluid dynamics, convection, conduction, and radiometric heat transfer properties. • Create FLUENT user-defined functions in C++ for wavelength-band scattering and absorption coefficient, and acquiring data at specified FLUENT cell and face locations.• Create programs in FORTRAN to generate and compile ray files into radiation boundary conditions at the optical aperture of the Small Particle Heat Exchange Receiver. Ray files generate the incoming radiation from a heliostat field or specifies diffuse radiation. • Develop MATLAB scripts for compiling FLUENT data to analyze the thermodynamic characteristics of the Small Particle Heat Exchange Receiver.• Conceptualize and implement new techniques to solving coupled radiative heat transfer problems using ANSYS FLUENT.

• Design and analysis of opto-mechanical components for an airborne LiDar system. • Design a rugged motorized two axis gimbal for a 250 mm x 350 mm elliptical mirror to be used in a SWIR LiDar system capable of a tip/tilt range of ±1° and steering resolution of 0.25 μrad. • Perform system error budget analysis considering a λ/20 surface error budget allocated to self-weight deflection, assembly error, thermal error, and modal response.

Lead Mechanical Engineer for the integration, modification, design, and analysis of mechanical structures and assemblies for aircraft payloads required in high reliability environments. • Sole mechanical engineer for the modification of an aircraft platform. Designed a complex structure and chassis that incorporated a heat sink and an air plenum for cooling. Performed CFD and FEA analysis to verify all designs.• Mechanical engineer team lead for the modification of an aircraft platform from program conception to final delivery. Provided direct guidance, direction, and management of team. Was directly involved in all stages of the program from the system requirements allocation, preliminary site survey and design, presented at all design/drawing reviews, and was directly involved with the initial program integration, final integration, and final inspection. • Lead structural analysis engineer for an aircraft platform. Performed Finite Element Analysis for all top level, sub system, and component parts using FEA analysis. All designs were verified to meet platforms crash safety margins. Hand calculations performed to verify results and fastener margin of safety using worst case or combined fastener loads. Presented at PDR, CDR, and authored FEA CDRL.• Lead thermal analysis engineer for an aircraft platform. Performed thermal analysis for multiple subassemblies. Analyzed system processor and heat sink plenum using forced convection boundary conditions. Created MATLAB script to calculate fin efficiency, fin length, and free stream velocity. Presented thermal analysis results to customer at key milestone deliverables, and authored thermal analysis CDRL.

Opto-Mechanical engineer working in a high-tech, fast paced, high stress, semi-conductor manufacturing environment operating under short design deadlines and procurement cycles. • Lead engineer in the design, testing, and research efforts leading to achieving the company's goal of reducing the residual unbalance of rotors used in a LPP discharge chamber from a G1.0 to a gyroscopic grade of G0.4. Presented findings to company CTO, department scientists, and senior engineers at weekly technical presentation forum. • Support engineer working on the design modifications of a laser produced plasma discharge chamber operating at 193nm and 900W. Design “tear drop” PI tube made of high purity, high density alumina for the laser discharge chamber. Redesigned steel piping for water-cooled heat exchanger. Responsible for all deliverables including design deadlines, drawings, change/release process, design reviews, procurement and delivery of parts.• Researched and helped develop a flexural bearing cup design used on a laser produced plasma discharge chamber fan hub assembly. The unique flexural bearing design prevented material galling and allowed for axial motion of the fan hub during thermal cycling. • Designed complex optical mounting solutions using Pro/E for critical imaging lens vacuum window exposed to DUV radiation at 160nm. Images obtained with the lens were important to understanding electrode erosion in fluorine-containing electrical discharges for a laser-produced plasma discharge chamber. Lens was designed for low stress induced wavefront distortion and low thermally induced stresses. Lens was successful on first implementation. • Support lead chamber scientist for a R&D program in broad design matters. Design test fixtures for high precision sheet metal current return, research copper heat treating for specific metallurgical properties, research various vendors and drive procurement activities to meet project deadlines.