Dr. Bill J. Cassarly
Synopsys Scientist at Synopsys Inc
SPIE Involvement:
Fellow status | Conference Program Committee | Author | Instructor
Publications (41)

PROCEEDINGS ARTICLE | November 27, 2017
Proc. SPIE. 10590, International Optical Design Conference 2017
KEYWORDS: Optical design, Cameras, Freeform optics, Nonimaging optics, Illumination engineering, Illumination software

PROCEEDINGS ARTICLE | November 27, 2017
Proc. SPIE. 10590, International Optical Design Conference 2017
KEYWORDS: Optical design, Computer aided design, Optical design software, Illumination engineering, Illumination software

PROCEEDINGS ARTICLE | November 27, 2017
Proc. SPIE. 10590, International Optical Design Conference 2017

SPIE Journal Paper | January 12, 2016
OE Vol. 55 Issue 01
KEYWORDS: Light emitting diodes, Reflectors, Monte Carlo methods, Finite-difference time-domain method, Collimation, Solids, Interfaces, Computer simulations, Optical engineering, Scattering

PROCEEDINGS ARTICLE | August 25, 2015
Proc. SPIE. 9572, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XII
KEYWORDS: Fluctuations and noise, Waveguides, Glasses, Ions, Receivers, Solids, Optimization (mathematics), Spherical lenses, Light, Fiber optic illuminators

SPIE Journal Paper | April 21, 2015
OE Vol. 54 Issue 04
KEYWORDS: Light emitting diodes, Monte Carlo methods, Glasses, Finite-difference time-domain method, Interfaces, Polarization, Organic light emitting diodes, Eye, Scattering, Optical simulations

Showing 5 of 41 publications
Conference Committee Involvement (36)
Optical Modeling and Performance Predictions X
22 August 2018 | San Diego, California, United States
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XV
19 August 2018 | San Diego, California, United States
Illumination Optics V
14 May 2018 | Frankfurt, Germany
Optical Modeling and Performance Predictions IX
8 August 2017 | San Diego, California, United States
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV
6 August 2017 | San Diego, California, United States
Showing 5 of 36 published special sections
Course Instructor
SC011: Design of Efficient Illumination Systems
Illumination systems are included in fiber illuminators, projectors, and lithography systems. The design of an illumination system requires balancing uniformity, maximizing the collection efficiency from the source, and minimizing the size of the optical package. These choices are examined for systems using lightpipes, lens arrays, faceted optics, tailored edge rays designs, and integrating spheres through a combination of computer simulations, hardware demonstrations and discussions.
SC345: Light Source Modeling
The increasing power of illumination software has accentuated the demand for creating accurate source models. This course is an overview of source modeling techniques ranging from apodization of point sources to construction of sources using extended emitters to apodization using multiple CCD camera images. Emphasis is placed on incoherent sources including incandescent, halogen, fluorescent, high intensity discharge, and light emitting diodes. The use of optimization to fine tune source models is shown.
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