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3X Microscope Thermal LWIR Lenses

Code:306-004

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Optical Parameters:

Magnification 3x
N.A.(Numerical Aperture)* 0.55
(EFL)** 13.286mm
Wavelength 8μm~12μm
Detector 640x480-17μm
Image Size 10.88mm x 8.16mm
O.D. (Objective Distance)*** 20mm (19mm~21mm)
Objective Size 3.63mm x 2.72mm
External Coating AR
Average Transmittance >92%
Distortion Maximum D-FOV Distortion:1.5%

 

Notes:

  • Microscope doesn’t use f-number but uses N.A.
  • In Microscope optical system, EFL is not important.
  • O.D. is the distance from the objective plane to the first element surface.  

 

Mechanical Specifications:

Dimensions Length:55.11,Diameter:Ф39
Sealing IP54
Mount M34x0.75-6g
Back Flange Distance 13mm
Housing Material Aluminum, Black anodized
Operation Temperature -15°~ +50°
Storage Temperature -25°~ +60°
Weight -

Drawing:


Testing Results and Curves:

1. 20°MTF(@29lp/mm)                                  




2.20°field curvature and distortion




3.Vignetting   




  4.Relative Illumination    



3X Magnification
8μm-12μm
Length:55.11, Diameter:Ф39
13.286mm
AR
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