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      Electro-Optic Design Exclusively for LEDs

Optics,  Thermal Management,  Electronics,  Fabrication
Post Top LED Retrofit
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  • 30 years experience in product development
  • LED retrofits for conventional lighting
  • Using single chip and multi-chip LED arrays
  • Integrated thermal packaging
  • Integrated optics: refractive, reflective, TIR
  • Retrofit modules customized for the OEM
  • Specializing in thermal management for power LEDs
Holophane LED Retrofit
General Specifications:
CCT: 3,000K   CRI: ≥ 78   Operating Voltage: 100 - 277VAC or 347 - 480VAC   PF: > 0.90
Lumen Maintenance: ≥ 70% after 50,000 hours   Operating Temperature: -40°C to 55°C
IESNA type: 3 & 5 available     Efficacy: ≥ 60 Lumens per Watt.

My proprietary Patent Pending thermal management system used in acorn fixtures allows maximum lumen output and coolest LED operation.  This technique is tested as 20% more efficient than conventional finned heat exchangers used by most manufacturers.  Field installable designs are also available with a Mogul base and no loss of LED thermal performance. 

Note that photometrics shown below are with original factory optics.  Some acorns and globes can be modified to cutoff or semi-cutoff with our optics systems.  In some cases, internal refractors can be eliminated.

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LED Retrofit Kits are available from
Lektron Incorporated
7450 E 46th Pl, Tulsa, OK 74145
(918) 622-4978

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EMAIL    Patrick Mullins   (918) 809-7574   
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Street Lighting Equipment Logopost top acorn fixture

Custom and Ornamental HID & LED light fixtures,
posts and hardware
are available from
Street Lighting Equipment Corp.



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
Howard Hughes  Medical Institute
Our Color Receptors  How our eyes work
Light-Emitting-Diodes-dot-org
Energy Science  Made Simple
Judging Color  with only 3 receptors
LED Lighting Myths  Fact or Fiction

A few Reps in the Lighting Industry
Alliance Lighting   DC Metro Area & Maryland
The Arras Group   Orlando, FL
Athena Light & Power   New York
InterMountain Lighting   Boise, Idaho
LL Lighting Resources   Jacksonville, FL
Premier Lighting Columbia, Charleston & Greenville
SESCO Lighting   Atlanta, Georgia North
SESCO Lighting   Chattanooga, TN
SESCO Lighting   Ft. Meyers, FL
SESCO Lighting   Knoxville, TN
SESCO Lighting   Orlando, FL
Specified Lighting Sales   St. Petersburg, FL
Spec-Lines   Reading, Massachusetts
Tennessee Lighting Sales   Nashville, TN
The Lighting Alliance   Dallas, TX & Shreveport, LA
World Electric Supply   Florida, Georgia & NC

Light Pollution, Light Color and Health
Light Pollution Defined  by Wikipedia
Health Effects of Light Pollution Ron Chepesiuk
Unique Human Health Effects of Blue Light
IDA Position on Blue Light
Blue Light Pollution In the News
Blue Light Threatens Animals and People In The News
Sunset  as seen from Space
US Light Pollution  Another View from Space
NASA View of World  Light Pollution Map

General Lighting Stuff
LED Universal  Payback Calculator
Candela to  Lumen Calculator
Parking Garage Lighting  with LEDs
Ornamental Lighting  posts, fixtures & hardware
LED Retrofit - Holophane Washington Postlite 400
IESNA Indoor Lighting  Tables
Definitions  Streets, Parking, Pedestrian, Bikeways
IESNA Outdoor Lighting  Tables
IES-LED-Doc-TM16  LEDs Explained
LED Center  A Fresh Perspective
About LEDs  A basic Primer
NEMA  SSL Section  More on Topic
CRI Color  color chart for comparison
Color Temperature  Chart Compares Lights