New Products From
Optec
HanVision
AVC
 

 

Special Situations Lenses
In addition to the two NIR product lines, Optec has designed and built numerous special lenses, either as modifications of standard models or as full custom designs. Optec welcomes these programs, even if the need is only for small quantities.

Need a custom NIR lens? Fill out this form and fax it to us for a quote.
 

Long Focal Length NIR Lenses
For imaging at longer distances, Optec offers two lenses with Canon FD mounts and c-mount adapters. Longer focal length lenses can be built but the maximum aperture is generally subject to practical size and weight limits.
 
Type Number
9930
C0245
Focal Length (mm)
200
300
Maximum Aperture
2.4
3.5
Diagonal FOV (deg)
5
3.4
Minimum Focus (m)
4.5
7.5
Transmission (%)
>80
>80
Distortion (%)
<1.5
<1.4
Vignetting (%)
<20
<20
Image Diameter (mm)
18
20.5
40% MTF at (lp/mm)
15
25
Size (dia/length  mm)
75/100
87/94
Weight (kg)
0.6
0.7

 


Type 9930 200 mm f/2.4
400 mm f/4.8 with optional doubler

Type C0245 300 mm f/3.5
Large-Format NIR Lenses

Some newer high-resolution NIR sensors are quite large. Optec can design lenses for these.

For example, the drawing shows the C0411, a 35 mm f/1.4 lens with an image diameter of 32.8 mm and an MTF of 40% at 25 lp/mm.

 

Computational NIR Optics

In addition to imaging lenses, Optec can produce transfer and Fourier optics for use in optical computing. The lens shown is a relay pair designed to provide a Fourier image in the gap for filtering by a liquid crystal matrix.


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