Nisa  Khan Author of Evaluating Organization Development

Nisa Khan

IEM LED Lighting Technologies

I have been a research scientist and engineer for over 25 years, and have had a dual career in finance and engineering since 2002. Through my professions, I hope to generate valuable goods and services as meticulously as I can while honoring social responsibility. I appreciate light from scientific and artistic perspectives and enjoy developing new LED lighting technologies for green living.


M. Nisa Khan received her bachelor’s degree in physics and mathematics from Macalester College, St. Paul, Minnesota, and her master’s and PhD degrees in electrical engineering from the University of Minnesota, Minneapolis.  During her studies, she worked as a research associate for 9 years at Honeywell Solid State Research Center in Bloomington, Minnesota.  After completing her doctorate, she became a member of the technical staff at AT&T Bell Laboratories (now Alcatel Lucent) in Holmdel, New Jersey, and spent most of her 6 years at the Photonics Research Laboratory at Crawford Hill conducting pioneering work on 40-Gb/s optoelectronic and integrated photonic devices.  Dr. Khan then worked on optical communication subsystems at several other companies, including her own venture-backed companies in New Jersey.  In 2006, she started an independent research and engineering company in LED lighting and has since been involved in innovation and technology development for making solid-state lighting more suitable for general lighting.  As an independent consultant, Dr. Khan performs feasibility studies for LED lighting used in entertainment and signage industries and offers platform design and development solutions for general lighting applications.  Since 2007, she has been writing the “LED Update” column for Signs of the Times magazine, which has been serving the electric signage industry since 1906.


    Ph.D. in electrical engineering, University of Minnesota, Minneapolis, 1992.

Areas of Research / Professional Expertise

    Guided-wave optics in compound semiconductors, high-speed optoelectronics and integrated optics.

Personal Interests

    Arts, sports, cooking, music, and mentoring.



Featured Title
 Featured Title - Understanding LED Illumination - 1st Edition book cover


Seeking Alpha (A leading financial website for investors)

Apple & Samsung:Litigation, Competition & Partnership are Just Business as Usual

Published: Nov 25, 2013 by Seeking Alpha (A leading financial website for investors)
Authors: Dr. Nisa Khan
Subjects: Information Technology

This article describes why Apple and Samsung remains as big winners despite their ongoing litigation battle against each other, while investors get the short end of the stick. But there are still opportunities to make money with such big, established companies if investors follow certain strategies to pick the right type of securities.

Seeking Alpha (A leading financial website for investors)

Where the Money is: LED Display and Lighting

Published: Nov 18, 2013 by Seeking Alpha (A leading financial website for investors)
Authors: Dr. Nisa Khan
Subjects: Computer Science & Engineering

The article describes the investment opportunities and challenges in the LED display and lighting industries.

Seeking Alpha (A leading financial website for investors)

Outlook on Apple and Samsung Battle - Lighting to Lead the Way?

Published: Nov 11, 2013 by Seeking Alpha (A leading financial website for investors)
Authors: Dr. Nisa Khan
Subjects: Computer Science & Engineering

The article describes the dominance and weaknesses of Apple and Samsung's smartphone and tablet products. It further gives insights to what lies ahead for these companies in terms of where they might invest their large sums of cash to stay ahead of the competition in the communication, display and consequently LED lighting industries.

Seeking Alpha (A well recognized financial website for investors)

LEDs and OLEDs Light Up Markets

Published: Nov 01, 2013 by Seeking Alpha (A well recognized financial website for investors)
Authors: Dr. Nisa Khan
Subjects: Engineering - Electrical

The article describes the current and projected usage and market penetration of LEDs and OLEDs in the display and lighting industries. It explains the difference between LEDs and OLEDs as well as their benefits and challenges in scientific but nevertheless easy-to-understand terms.



My book "Understanding LED Illumination" explains why LED's have glare

By: Nisa Khan
Subjects: Engineering - Electrical

The optoelectronics industry developed LEDs to be used for lighting.  It solved such initial challenges as low efficacy (lumen/W)and poor "white light" color quality in LED lamps.  However, two important remaining problems for LED lamps are pronounced glare and inadequate diffusion of light over larger space.  My book, "Understanding LED Illumination" explains for the first time why LEDs in their present form have glare; the book also introduces novel techniques to diffuse light over broad space to create omni-directional and multi-directional light distribution.  Introductory descriptions of these are given in my LED Update column in Signs of the Times magazine:


Author's Motivation for Writing "Understanding LED Illumination"

By: Nisa Khan

Dr. Khan recommends readers to read about her motivation, which is described in her LED Update column in the April 2013 issue of Signs of the Times magazine.  You can find this article here:


US Patent 8,506,119 B2 Granted to M. Nisa Khan on August 13, 2013

By: Nisa Khan

Patent Abstract: 

Concepts for increasing brightness and uniformity and providing dimming for LED-illuminated signs and display are disclosed.  Substantial increase in brightness is achieved via reducing the distance between LED modules and the sign or display they illuminate by placing the LEDs on a raised grid platform constructed with a plurality of intersecting plates.  Whenever two plates intersect, a “grid-node” is formed, creating a plurality of intersections and grid nodes in a two-dimensional array.  On each grid-node, two distinct and electrically isolated LED sub-modules are placed.  By connecting all LED sub-modules parallel to one dimension (e.g., X-axis) in one series, and all LED sub-modules parallel to the other dimension (e.g., Y-axis) in another series, two electrically isolated LED series are created.  Lighting up both series provide maximum brightness and good uniformity; lighting up only one series allows dimming for illuminated signs or displays without any drive current adjustment.

US Patent 8,348,467 B2 granted to M. Nisa Khan on January 8, 2013

By: Nisa Khan
Subjects: Engineering - Electrical

Patent Abstract:  An LED replacement-lamp design concept comprising tapered waveguides to provide uniform and broad light distribution is disclosed. Currently, most LED-based replacement lamps for tubular fluorescent lamps place discrete surface-mount LEDs directly on a cylindrical base, which produce wasteful, non-uniform and directional illumination unsuitable for large space and high-ceiling applications.  An LED lamp design, proposed as a tubular lamp replacement, comprises of a plurality of discrete LEDs mounted on a common substrate, where all light from each LED is immediately guided and broadened through a tapered waveguide long enough to seamlessly terminate at the lamp’s semi-circularly curved cover surface.  Many such LED-waveguide assemblies can fill the entire curved cover with diffused and uniform light distribution, resulting in illumination over broad angular ranges.  The proposed lamp has a “D” shaped cross-section wherein the lamp’s flat side is used as a heat-sink base to be placed against the ceiling or some blocking surface.