Bushnell digital sentry night vision review

#Bushnell digital sentry night vision review series

This component converts the incoming photons into electrons. The first part of the tube is called the photocathode. This is a special electronic vacuum tube powered by small AA or N-cell batteries, which consists of two components. These photons pass through the objective lens into an image-intensifier tube. This light, like all light, is comprised of small particles called photons.

The first lens in the system, called the objective lens, captures the dim visible light reflected from the subject, along with some light from the low end of the infrared spectrum.

#Bushnell digital sentry night vision review series

This technology uses a series of optical lenses and a special electronic vacuum tube to capture and amplify the visible and infrared light that is reflected off nearby objects. Older night vision equipment uses optoelectronic image enhancement technology. Understanding Optoelectronic Image Enhancement A newer technology, digital image enhancement, captures available light on a digital image sensor and then digitally enhances the images in a full-color display. Traditional night vision devices use optoelectronic image enhancement, which works by sensing small amounts of infrared light that are reflected off objects and then electrically amplifying that light into a characteristic glowing green image. There are actually two similar technologies used in night vision equipment. Night vision monocular cameras let you take photographs and videos of things you can't see in the dark with your naked eyes.

With quality night vision goggles and scopes you can see people, animals, and objects up to 1,000 yards away on a dark night. Night vision devices let you see in the dark.