technical portfolio 15 opteng no backlink

Technical Portfolio

Jim Williamsonopticalengineer123@gmail.com

What’s Included?

•Consumer Product Work•Industrial Product Work

Please note: In all these examples below, I have tried to provide the motivation for the technology created, not just the technical work alone. Particularly in the cases where I was the primary inventor, I tired to create a solution that met the requirements of the customer and also provided a significant ROI and competitive advantage.

Consumer Products 1) Award Winning Vertical Scanner

2) Non-Imaging Illuminator3) Waveguide Array ScanHead4) Cell Phone Sensors5) Optical Storage Film6) BeatLight Laser Toy

1) Vertical See Thru Scanner: Original Patent• USPTO 6307649

• Invented to solve Problem of Large Scanner FootPrint• Envisaged as Fitting over Monitor or Storable off Table

1) Vertical See Thru Scanner :Final Product

Winner of Industrial Design Awardshttp://www.idsa.org/awards/idea/computer-equipment/hp-scanjet-4670

Scanner Stand

REMOVABLESEE-THRUSCANNER

2) Non-Imaging Scanner Illuminator• Non-Imaging Truncated Compound Elliptical Concentrator (CEC) • Created to Improve Efficiency and reduce System BOM• Result: $10 savings/scanner (100 k units/mo)• USPTO 5903404

Scan Line Width only ~100 um BUT Illumination Width >>1 cm Illumination Width<< 1 cm

Truncated CECDesigned using ASAP

PROBLEM SOLUTION!

3) Waveguide Array ScanHeadThis is a polymer waveguide based image scanner. Designed to eliminate the delicateoptics in conventional document scan systems and, thus, reduce component and assemblycost. Accomplished by using a polymer waveguide; there are thousands of individualwaveguides in this system. I modeled the entire thing in ASAP. I also performed MTF and other image quality metrics on the completed array. USPTO 5930433

CCD

Waveguide Array

4)Design/Simulation Ambient & Proximity SensorsI built this part in SolidWorks and analyzed its performance in Zemax. These

were designed and built for a customer thru Technical Optics, LLC.

Lens

Light Source

ProxALS

5) Optical Storage Phosphors Film StructureAt a time when CCD detectors were expensive and CMOS detectors too noisy, we started a project

to create a “digital film” using an Optical Storage Phosphor. Initial film had poor resolution and crosstalk.In conjunction with Rick Trutna, I invented this structure which significantly improved the resolution and limited crosstalk in this system. USPTO 5534702

StoragePhosphor

Reflective Silicon Film Structure

BeatLight is a niche laser entertainment product that projects various images suchas a Circles, Lissajous patterns, Comic Faces, Words etc. The size of these images changesin Rhythm to the beat of music played near the BeatLight. This system showcases my skills in Electronics, Mechanical Design, and Programming

6) BeatLight Laser Toy

6) BeatLight Design ConceptsI designed all these product concepts

6) Sample BeatLight Images*Images respond (shape, size) to the “Beat” of Sound Source near

Device

Beaded Circle

LissajousScript

Smiley Face

* Simulated..It was hard to capture a good image without blur on camera

6) BeatLight Prototype Analog, Digital, Embedded

Electronics DesignI designed the electronics and installed all

components

6) BeatLight :Double Sided Printed Circuit Board

I selected the components and did board layout.

6) BeatLight: C Program ExampleI Wrote the Code and Programmed

It into MicroController Memory

6) BeatLight Actuator PrototypeI designed and built these Beam Deflectors. They are equivalent in performance toGalvanometers costing hundreds of dollars, but are compact and inexpensive.These Devices incorporate Optics, Mechanics, Magnetics, and Electronics

6) BeatLight :FEA of Actuator MagnetsThis sim allowed me to optimize magnet design for optimal field

uniformity and strength

Original Design: Low Density Flux Improved Design: High Density Flux

Industrial Products

7) III-V Detectors for Instruments8) Array Detector & Spectrometer9) Flat Response Detector for Power Meters

7) III-V Photodetector Design and FabricationI have designed, built, and tested Large Area and High Speed Photodetectors similar to the one shown below. These detectors were developed for HP’s Optical Measurement Systems at the request of our product divisions and incorporated into systems such as the HP 8504 Precision Reflectometer.

7) III-V Detector: Optical Measurement System

Broadband Light Source

Monochromator

FiberCoupler

ReferenceDetector

Parameter Analyzer

Voltmeter

Computer

Probe Station

Device UnderTest

Microscope

Camera/Eye

As part of the detector development, I’ve built systems for and performed optical and electrical test. The system below measures the wavelength response of the device. I’ve also built and operated similar systems for Optical Fiber Measurement, including Attenuation vs Wavelength, Numerical

Aperture, Frequency Response, OTDR and Refractive Index

7) Typical Measurement SystemsThe Detector measurement system and other optical measurement systems are typically set up on an optical tables and look something like this. I’ve built many measurement systems in

this manner: for fiber optics, detectors, laser test, and scanner/optical pickup.

8) NIR ARRAY DETECTOR & SPECTROPHOMETERI have also designed, built, and tested Array Photodetectors. These required

creation of significant additional technology due to the close spacing. These detectors were developed for a NIR Spectrophotometer as an extension to the existing UV-VIS market. These systems can analyze materials only accessible in the NIR. I built a similar system as shown and demonstrated liquid Ethanol absorption.

8) NIR Array Detector: Photoetching Diffusion AnalysisThe InGaAs Array Detector shown on the previous page had very close spacing. The Zn diffusion could overlap and short the detectors. I invented and published this electroless photoetching system for visualizing the Zn diffusion in adjacent detectors. Also, transferred this technique to our product division.

9) Flat Response Detector (FReD)FReD was created in response to a HP Optical Power Meter Division request for a Photodetector not requiring calibration. I did this by thinning down the epi and using a compensating filter designed using TFCalc.

Conventional InGaAs Detector

FReD InGaAs Detector

p+ InP

n- InGaAs

n+ InP

n+ InPThin n- InGaAs

p+ InPcompensating filter

ConventionalInGaAs

Photodetector

FReDInGaAs

Photodetector

Jim Williamson Summary•Very Experienced, Broadly Skilled Engineer•Experience: Optics, Optoelectronics, Test, Materials, Processing, Research, Design, Development, Applications, Electronics, Mechanical Design, and Programming•Seeking Contract & Unique Full Time Positions• Contact me at opticalengineer123@gmail.com