Calibration of night vision goggles: an SI-units-based gain measurement technique

Civilian use of night vision goggles.

Civil aviation operators have expressed an increased interest in conducting night operations with night vision imaging systems. The development of special operational concepts, hardware requirements, training requirements, and regulatory change and oversight is necessary to control for the known performance constraints associated with these devices. In 2001, the Aerospace Medical Association in...

Detection of Motion-defined form using Night Vision Goggles

Perception of motion-defined form is important in operational tasks such as search and rescue and camouflage breaking. Previously, we used synthetic Aviator Night Vision Imaging System (ANVIS-9) imagery to demonstrate that the capacity to detect motion-defined form was degraded at low levels of illumination (see Macuda et al., 2004; Thomas et al., 2004). To validate our simulated NVG results, t...

Visual Acuity and Stereopsis with Night Vision Goggles

Light Source Halos in Night Vision Goggles: Psychophysical Assessments

Anecdotal reports by pilots flying with Night Vision Goggles (NVGs) in urban environments suggest that halos produced by bright light sources impact flight performance. The current study developed a methodology to examine the impact of viewing distance on perceived halo size. This was a first step in characterizing the subtle phenomenon of halo. Observers provided absolute size estimates of hal...

Image Contrast and Visual Acuity Through Night Vision Goggles

Night vision goggles (NVGs) intensify ambient illumination making it possible to see in the dark despite insufficient light for normal vision. NVGs are used for military and civilian operations, and as visual aids for night blindness. The quality and quantity of vision achieved through NVGs depends on several factors including the intensity of ambient radiation, the integrity of NVG electro-opt...