Hyperspectral Lenses

MWIR & LWIR Lenses - Enhanced Series

MWIR - Cropped.jpgWhen choosing between the two MWIR Enhanced Series lenses, consider the size of the samples and the desired magnification. For larger objects, the OLEM23 is most appropriate. The mounting of these MWIR lenses is custom and only designed for use with the MWIR spectrograph in this catalog.

Different LWIR Enhanced Series lenses are available, depending on which LWIR camera being used.  The custom mounting of the LWIR lenses are designed only for the LWIR cameras in this catalog.  Please contact a product specialist at Middleton Spectral Vision to discuss your application and camera requirements to find out more information about these lens options.  

Specifications
Optical Characteristics OLEM23 OLEM43 OLEL32 OLEL41 OLEL43
Focal Length 23.4 mm 43 mm  31.9 mm  41.3 mm 43 mm
F-number 3 3.8 3.7 2.5 3.8
Spatial Image Size (max) 19.5 mm 18.3 mm 18.4 mm 24 mm  18.4 mm
RMS Spot Diameter 11.5 µm 19.0 µm 30 µm 37 µm  34.5 µm
Transmission > 94% > 94% > 94% > 94% > 94%
Minimum Working Distance * 30 cm 30 cm 30 cm 30 cm 30 cm
Mechanical Characteristics
Dimensions (mm) 29 x Ø 28 50 x Ø 33 52 x Ø 42 46 x Ø 46 50 x Ø 33
Body Material Stainless Steel / Anodized Aluminum
Mount Proprietary mount
Dimensions of Imaged Line (LxW) at Select Working Distances (D)
    OLEM23 OLEM43 OLEL43
Field of View angle (degrees) **   44.2 24.9 24.2
D = 300 mm [11.81 in] L= 243.59 132.56 128.37
  W= 1.54 0.84 0.84
D = 500 mm [19.69 in] L= 405.98 220.93 213.95
  W= 2.56 1.4 1.4
D= 750 mm [29.53] L= 608.97 331.4 320.93
  W= 3.85 2.09 2.09
D = 1000 mm [39.37] L= 811.97 441.86 427.91
  W= 5.13 2.79 2.79
D= 1500 mm [59.06] L= 1217.95 662.79 641.86
  W= 7.69 4.19 4.19
D = 2000 mm [78.74 in] L= 1623.93 883.72 855.81
  W= 10.26 5.58 5.58
D = 3000 mm [118.11 in] L= 2435.9 1325.58 1283.72
  W= 15.38 8.37 8.37
D = 1 km [3280 ft] *** L= 811.97 441.86 427.91
  W= 5.13 2.79 2.79
MWIR - Enhanced Series Lenses   Ordering Information
Part numberDescriptionProduct Name
MRC-308-005-01 MWIR Enhanced, Proprietary-Mount Lens. 23.4 mm f/3, E-Series, 3000-5000nm OLEM23
MRC-308-005-02 MWIR Enhanced, Proprietary-Mount Lens. 43 mm f/3.8,E-Series, 3000-5000nm OLEM43
LWIR Lenses - Enhanced Series   Ordering Information
Part numberDescriptionProduct Name
MRC-308-006-01 LWIR Enhanced, Custom Mount Lens. 43 mm, f/3.8, E-Series, 8000-12000 nm OLEL43
MRC-308-006-03 LWIR Enhanced, Custom Mount Lens. 41.3 mm, Custom Mount, E-Series, 8000-12000 nm OLEL41
MRC-308-006-04 LWIR Enhanced, Custom Mount Lens. 31.9 mm, f/3.7, Custom Mount, E-Series, 8000-12000 nm OLEL32 

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