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Video Inspection Optics Lenses for Viewing Objects 2" or Smaller Navitar offers the Zoom 6000 and 12X Zoom video microscope systems
which will outperform any video lenses for close-up, high magnification
applications. Typically, video lenses were designed to work from 3' to
infinity, but Navitar's Zoom 6000 and 12X lenses are ideal for
applications that require a much shorter working distance. These
rugged lenses have built-in locking set screws and can handle the
vibration of a typical machine application. And because they are
specifically designed for high magnification, they have a higher
contrast level and less edge distortion that conventional video lenses. Lenses for Viewing Objects 2" or Larger Navitar offers the Zoom 7000
macro lenses featuring the same parfocal zoom capabilities offered by
the Zoom 6000 and 12X Zoom series while allowing close-up
image capture without extension tubes or close-up lenses.
Using Lenses with Megapixel Cameras Older model lenses designed to be used with video cameras may
compromise image quality when used with cameras having higher than
480 vertical lines. Megapixel lenses are designed to
yield greater point to point accuracy and should be carefully
considered when choosing a lens for demanding imaging applications.
View the
Lens Selector Chart.
NOTE: these are basic guidelines
and are not appropriate for exact lens selection. For a
specific lens recommendation, contact I-CUBE Needed measurements: Camera-to-object distance
(OD): distance from face of camera to object Do not confuse working
distance with Camera-to-object distance. Working distance is
measured from the front of the lens to the object being viewed Object size If you are measuring the
width of your object, then use the horizontal CCD specifications CCD size (HxV): 1/3"
CCD = 4.8mm x 3.6mm 1/2"
CCD = 6.4mm x 4.8mm 2/3"
CCD = 8.8mm x 6.6mm 1"
CCD = 12.8mm x 9.6mm 1"
= 25.4mm Formulas: Magnification (M) =
Object size / CCD size Focal length (FL) = OD /
(M + 2 + 1/M) Example: Camera-to-object distance =
12" = 304.8mm Selected camera: 1/2"
CCD Object size: 3" =
76.2mm Preferred orientation:
horizontal M = 76.2 / 6.4mm = 11.9 FL = 304.8 / (11.9+2+ (1 /
11.9)) = 304.8 / 13.98 = 21.8mm Lens choice: 25mm |
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