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Telec
en
tr
ic L
enses
102
http://machinevision.navitar.com
• email: [email protected]
Video Telecentric Lenses
TC-5028
The Navitar TC-5028 telecentric lens is a 50 mm
F/2.8 telecentric lens which reduces or eliminates
viewing angle error and magnifi cation 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.
Specifi cations for Telecentric Use
Magnifi cations
0.5 1.0X
Distortion at 0.5X
-0.3%
Distortion at 1.0X
Less than - 0.1%
Distance from Front
Lens to Object
0.5X:115mm
1.0X:85mm
TC-5028 Video Lens Specifi cations
Part Number
TC-5028
Focal Length
50 mm
Iris Range/ F-Stop
2.8 - Close
Control
Iris
Manual
Focus
Manual
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 - infi nity
Field Angle
(HxV)
2/3”
10º 03’ x 7º 33’
1/2”
7º 19’ x 5º 29’
1/3”
5º 29’ x 4º 07’
1/4”
3º 39’ x 2º 45’
Back Focal Length (mm)
32.5
Filter Diameter
Ø37 P=0.75
Mount
C-mount
Weight (grams)
318
Exit Pupil Position
48.1(from image plane)
Distortion in TV
Less than 0.1%
Vignetting
97%
Filter Size
M37 P0.75
TC-5028 Outline Drawing
with Dimensions