Banner PresencePLUS Megapixel C-Mount Lenses - Manual (Page 4)

Lens Selection Guide
P/N 69950 rev. B
1
Banner Engineering Corp. • Minneapolis, MN • USA
www.bannerengineering.com • Tel: 763.544.3164
General Lens Considerations
There are many lens options to consider, such as focal length, mounting style, and focus
locking. The two most critical lens considerations are mounting style and focal length. Banner
products use C-Mount lenses only. Before selecting the appropriate focal length, Field of View
(FOV) and working distance must be determined.
Banner offers C-Mount lenses of the following focal lengths (in millimeters): 4, 8, 12, 16, 25,
50, and 75. Other manufacturers’ C-Mount lenses may also be used.
The following sections provide a tour through the process of determining the Field of View,
working distance, and focal length:
Determining Field of View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
Determining Working Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
Determining Focal Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
For additional help, support is available from your local Banner representative or a Banner
Application Engineer. Application Engineers are available from 8:00
A.M.
to 5:30
P.M.
Central
Time, Monday through Friday, excluding holidays.
Field of View
Field of view (FOV) is the area of the inspection captured on the camera’s imager. The size of
the FOV and the size of the camera’s imager directly affect the image resolution (one
determining factor in accuracy). See the illustration below.
Field of View
Lens
Imager
640 pixels
(horizontal FOV)
480 pixels
(vertical FOV)
Camera
Working
Distance
NOTE: The PresencePLUS Pro camera imager
size is 640 pixels wide by 480 pixels tall.