Telecentric Format CCTV Lenses
TC-5028 Fixed Focal Length Lens with Manual Focus and IrisThe NAVITAR TC-5028 telecentric lens is a 50 mm F/2.8 telecentric lens which reduces or eliminates viewing angle error and magnification error while providing high resolution and contrast with low distortion. This compact, lightweight lens can be used with 1/3", 1/2" and 2/3" format cameras and is usable from 0.5X to 1.0X, 1:1.
Machine vision has made the telecentric lens popular because conventional lenses are often unable to accurately portray objects which are slightly out of focus or at different distances from the lens. Constant perspective and magnification are maintained with a telecentric lens, so the size of the image will not change even if these problems do occur.
Other focal length lenses are being designed. Please call for more information.
TC-5028 Specs for Infinity Use
For Infinity Use
Focal Length
50mm
Iris Operation Range
f2.8 - Close
Distortion in TV
Less than 0.1%
Vignetting
97%
Filter Size
M37P0.75
Mount
C-Mount
TC-5028 Specs for Telecentric Use
For Telecentric
Magnification
0.5 1.0X
Distortion at 0.5X
-0.3%
Distortion at 1.0X
Less than - 0.1%
Distance from the FrontLens to Object
0.5X:115mm1.0X:85mm
Model
TC-5028
Focal Length (mm)
50
Iris Range/ F-Stop
2.8 - Close
Control
Iris
Manual
Focus
Zoom
N/A
Object Area at M.O.D (HxV)
2/3"
8.1 x 6.1
1/2"
5.9 x 4.4
1/3"
3.8 x 3.3
1/4"
2.9 x 2.2
Focusing Range (meters)
0.5 - infinity
Field Angle(HxV)
10ì 03' x 7ì 33'
7ì 19' x 5ì 29'
5ì 29' x 4ì 07'
3ì 39' x 2ì 45'
Back Focal Length (mm)
32.5
Filter Diameter
í37 P=0.75
Weight (grams)
318
Exit Pupil Position
48.1 (from image plane)
TEC-M55 Fixed Focal Length Lens with Manual Focus and IrisNavitar also offers the TEC-M55 telecentric C-mount lens for 2/3" format cameras. This 55mm F/2.8 telecentric lens maintains constant perspective and magnification.
TEC-M55
55
2.8 - 32C
17 x 13
0.14 - infinity
Field Angle (HxV)
9.2ì' x 6.97ì
29.8
í43 P=0.75
320
30.3(from image plane)
