69
CS
Large Format Sensor Lenses
P h o n e : 8 0 0 - 8 2 8 - 6 7 7 8 o r 5 8 5 - 3 5 9 - 4 0 0 0
•
F a x 5 8 5 - 3 5 9 - 4 9 9 9
25 mm
Multi-Magnification
Platinum Lens
42 mm Image Format with Low Distortion from
Center to Edge
Our innovative 25 mm multi-magnification lens (1-15838)
works with F-mount or C-mount cameras and offers 180 line
pairs per millimeter resolution. It is specifically optimized
to shift between any magnification from 0.1X to 0.5X while
maintaining diffraction-limited image quality with less than
0.13% distortion. Ideal for vision system applications, this
wide-angle lens is designed to allow cameras to inspect large
areas without the great distance required by a typical lens.
Navitar’s 25 mm lens features a fixed F/8 aperture which
allows for a balance between depth of field and resolution
while maintaining significant light-gathering power. It has
42 mm image coverage and a depth of field ranging from
15.4 mm at 0.1X to 1.1 mm at 0.5X. Its low distortion
permits cameras to determine dimensional measurements
without the need for software calibration on vision systems.
25 mm Platinum Lens Features
• Magnification from 0.1X to 0.5X.
• Focusable from 2” to infinity.
• 0.13% distortion on edges.
• Wide field design for close-up imaging.
• Large depth of field.
• Diffraction limited.
• Exceptional clarity and contrast.
25 mm Platinum Lens with C-Mount
25 mm Platinum Lens with F-Mount
25 mm Lens Magnification Specifications
Mag.
Object
Size
W.D.
Spot
Size
Image
MTF
Cut-off
Object
MTF
Cut-off
Object
N.A.
Image
N.A.
Object Side
Depth of
Field
0.50X
84.8
45
6.5µ
140
70
0.0212
0.0425
1.1
0.34X
127.2
70
5.6µ
160
50
0.0159
0.0476
1.9
0.20X
212
120
5.2µ
190
38
0.0105
0.0526
4.5
0.14X
318
183
4.8µ
200
25
0.0074
0.0556
9.1
0.10X
424
245
4.8µ
200
20
0.0057
0.0572
15.4
*Measurements are in millimeters unless otherwise specifi ed.
Platinum Lenses
Charts showing Field Curvature/Distortion, Relative Illumination, and Polychromatic Geometric MTF at
F#1 can be found on our web site at www.machinevision.navitar.com.
