Physical Aspectsof

Electro-OpticalCamouflage

PROPRIETARY

- SENSITIVE -

Richard N. Schowengerdt Lev Berger March 23, 1999

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THE CHAMELEON - LIZARD OF THE GENUS CHAMELEO- POSSESSES THE REMARKABLE ABILITY OF

CHANGING COLOR TO BLEND IN WITH BACKGROUND

Joint Venture - Questant Enterprises, Costa Mesa, California, andCalifornia Institute of Electronics & Materials Science, Hemet, California

RELATED TO TEMPERATURE OF BACKGROUND OBJECTSAND EMOTIONAL STATE OF THE CHAMELEON

Chameleon photo ourtesy of: Mr.BarnabyBigglesworths HOMEPAGE at http://members.aol.com/biggies79/Page1.html

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Why Is The Chameleon Our Mascot?

Object Being Concealed Behind Shield With Background Projected on Shield

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Shield

Tree in Background

Digital

CameraDigital Bus

Object being concealed

Digital Computer

Tree projected on shield

Exploded View Of Basic Concept

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Typical Camouflage Application

Captain, I don’t see anything except a tall building and a red car over there...

Observer

Shield

Camera

Digital Processor

Observer line of sight

TABLE I - ALTERNATIVE TECHNOLOGIES - ADVANTAGES AND DISADVANTAGES

Legend

OE = Optoelectronic PT = Photonic HG = Holographic LCD = Liquid Crystal Display HGS = Holographic Shield FOD = Fiber Optic Display AN = Analog DG = Digital FO = Fiber-Optic AVC = Analog Video Camera CCDC = Charge-Coupled Device CameraFOS = Fiber Optic Sensor P = Performance 1 = Low 2 = Medium 3 = High 4 = Highest Note: Other displays which offer possibilities are electroluminescent and plasma

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Technology Shield Processor Sensor Data Bus P

OE LCD AN AVC AN 1 OE LCD DG CCDC DG 2 PT FOM DG FOS FO 3 HG HGS DG FOS FO 4

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PROJECT YEHUDI REVISITED During WWII the visual concealment of a dive bomber by using a series of lights along its leading edges was conceived. A few seconds deception would be enough to enable the bomber to release its depth charges and

destroy a surfaced submarine before visual detection.

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Oil Well Island In Long Beach, California -Environmentally Camouflaged By Artificial Buildings

Chameleo - Advanced Application of Yehudi

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Oil Well Camouflaged By 8 Chameleo Screens

Synthetic Digital Image of Object Concealed Behind TV

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Fiber Optic MosaicShield Display

Wide AngleLens CameraFiber Optic

Cables -Typically1,000 or more fibers

Scene

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Advanced Fiber Optic Methodology

ObjectConcealed