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Optics,  Thermals,  Electronics,  CAD -  Domestic & Off-Shore Fab Coordination

Specializing in LED Retrofit designs for conventional lighting.


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    Pat has thirty years of experience in product development and manufacturing, with fifteen of those years in electro-optic design of LED systems specifically for the outdoor environment.  LED traffic signals and Changeable Message Signs (CMS) pioneered the environmental, thermal, optical and driver requirements for LEDs.  That Industry helped make LEDs what they are today. 

EMAIL    Patrick Mullins   (918) 809-7574   
spacer In The News
LED Professional
LEDs Magazine
LEDs Magazine Press Listing
Solid State Lighting Design News

Research and Papers
LRLL White Paper  Shining Light on Scotopic
Lumen Effectiveness Lewin IES Paper #50 (pdf)
Lamp Color in Outdoor Lighting Lewin (170 kB pdf)
Berman_discoveries new paper by Sam Berman

Science - Physics & Physiology
Light-Emitting-Diodes-dot-org
Energy Science  Made Simple
Howard Hughes  Medical Institute
Our Color Receptors  How our eyes work
Judging Color  with only 3 receptors
LED Lighting Myths  Fact or Fiction, Updated
spacer Cities Converting to LED Lighting
LED City
Anchorage, Alaska July 29, 2008
Torraca, Italy May 12, 2008
Toronto, Canada  July 11, 2007
Raleigh, North Carolina  February 12, 2007

Lighting Stuff
IES-LED-Doc-TM16  LEDs Explained
LED Center  A Fresh Perspective
About LEDs  A basic Primer
NEMA  SSL Section  More on Topic
Light Pollution Defined  by Wikipedia
Sunset  as seen from Space
US Light Pollution  Another View from Space
NASA View of World  Light Pollution Map
CRI Color  color chart for comparison  (new)
Color Temperature  Chart Compares Lights
Parking Garage Lighting  with LEDs




spacer Common  Specifications:
CCT: 4,100K   CRI: > 78   Operating Voltage: 100  to  277VAC   PF: >0.90   LEDs: Luxeon Rebel®
Lumen Maintenance: >70% after 50,000 hours       Operating Temperature: -40°C  to  55°C
IESNA type: 3 & 5 available       Modules have luminaire efficacy > 72 Lumens per Watt.
Uses existing photocell socket and wiring;  An integral Solid-State photocell option is available.

Acorn LED Retrofit
Common Refractive Acorn

Lumens:  5,919
Watts:  72
Dark Sky cutoff is available


    Acorn type-5 photometrics 		Post Top LED Retrofit
Contemporary Post-Top

Lumens:  3,378
Watts:  44
Dark Sky requires replacement refractor module

    Post Top type-5 photometrics 		Downlight LED Retrofit
Decorative Downlight

Lumens:  7,150
Watts:  85
FCO (Full Cutoff)
Dark Sky Compliant (IDA)

    Downlight type-3 photometrics

Click charts above to expand view of photometrics.
IES photometric files are available.

Retrofit modules may be customized for your particular fixture.
Call or write to exchange specific details.


Luxeon Rebel is a registered trademark of Philips Lumileds Lighting Company