Cameras produce clear images, day or night
A
Stemmer Imaging product story
Edited by the Engineeringtalk editorial team
Jan 7, 2008
Firstsight's day/night range features 14 monofocal manual and DC iris lenses and varifocal lenses with focal lengths from 2.5 to 80mm.
Firstsight Vision offers a range of day/night lenses designed to produce sharp CCTV images whatever the prevailing light conditions.
These lenses are able to focus both visible and infra-red light, thus compensating for the difference in wavelengths from daylight, moonlight, halogen car headlights and sodium street lighting, which could result in blurred images.
A nonday/night lens set up for one particular type of lighting results in blurred images when other types of lighting dominate.
Firstsight's Day/Night range features 14 monofocal manual and DC iris lenses and varifocal lenses with focal lengths from 2.5 to 80mm.
This includes a 1/2in format C-mount DC iris varifocal lens used extensively in traffic and ANPR situations.
Day/Night lenses have been used to great effect in areas where light pollution can be a problem.
For example it is inappropriate to flood car parks with visible light at night, but using infra-red light and a day/night zoom the scene can be monitored without affecting its ambience.
Firstsight Vision can also offer Day/Night zoom lenses with a focal range from 7.5 - 1500mm with functions including presets, iris override, motorised back focus and 2X range extenders.
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Contact Stemmer Imaging
Tel +44 1252 780 000
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