ABSTRACT
Night vision is the ability to see in low light conditions. Whether by biological or technological means, night vision is made possible by a combination of two approaches: sufficient spectral range, and sufficient intensity range. Humans have poor night vision compared to many animals, in part because the human eye lacks a tapetum lucidum.[ A night vision device (NVD) is an optical instrument that allows images to be produced in levels of light approaching total darkness. They are most often used by the military and law enforcement agencies, but are available to civilian users. The term usually refers to a complete unit, including an image intensifier tube, a protective and generally water-resistant housing, and some type of mounting system. Many NVDs also include sacrificial lenses, IR illuminators, and telescopic lenses.
Night vision devices were first used in World War II, and came into wide use during the Vietnam War. The technology has evolved greatly since their introduction, leading to several "generations" of night vision equipment with performance increasing and price decreasing. Another term is "night optical device" or NOD.
TABLE OF CONTENTS
TITLE PAGE
CERTIFICATION PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENTS
CHAPTER ONE
INTRODUCTION
STATEMENT OF PROBLEM
PURPOSE OF THE STUDY
IMPORTANCE OF THE STUDY
DEFINITION OF TERMS
CHAPTER TWO
LITERATURE REVIEW
TYPES OF RANGES
SPECTRAL RANGE
INTENSITY RANGE
BIOLOGICAL NIGHT VISION
NIGHT VISION TECHNOLOGIES
CHAPTER THREE
NIGHT GLASSES
ACTIVE INFRARED
LASER RANGE GATED IMAGING
THERMAL VISION
IMAGE INTENSIFIER
NIGHT VISION DEVICES
GENERATIONS
GENERATION 1
GENERATION 2 (GEN II)
GENERATION 3 (GEN III)
OMNIBUS-VII (GEN III+ OR GEN IV)
5.3 REFERENCE