New Products From
Optec
 

 

 
Short Back Focus

Features
  • Corrected and coated for 900-1700 nm
  • 25, 35, 50, 75, 100 mm focal lengths
  • f/1.4 maximum aperture (Canon types)
  • Reflection <1% per surface
  • Front thread for use with filters
  • Canon FD (short) or C-mount
  • No toxic glasses
  • Manual focus and iris

 
Specifications

All Types

  • MTF – 40% (min) at 15 lp/mm
  • Image Diameter – 18 mm
  • Chromatic Aberration - <10 µm

 

 Options
  • Motorized focus and iris
  • Coated for 1700-2500 nm
  • Special mounts
  • Narrowband and ND filters

Learn more about NIR imaging.
 
Type Number
9820
9829
9830
9831
9821
Focal Length (mm)
25
35
50
75
100
Maximum Aperture*
1.4/1.4
1.4/1.5
1.4/1.5
1.4/1.8
1.4/2.0
Diagonal FOV (deg)
40
29
20
14
10
Minimum Focus (m)
0.3
0.7
1.5
2.5
3.0
Transmission (%)
>85
>85
>83
>82
>80
Distortion (%)
<2.5
<2.0
<1.5
<1.5
<0.5
Vignetting (%)
<25
<25
<25
<22
<15
Size (dia/length  mm)
87/90
87/86
100/94
128/121
120/145
Weight (kg)
0.6
0.7
1.0
1.4
1.2

 
* Shown as Canon/C-mount
 
 
 


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