Hyperspectral Lenses

VNIR Enhanced Lenses

The Enhanced Series VNIR objective fore lenses are optimized for the visible to near-infrared wavelength region, 400 – 1000 nm.
They have a telecentric output and are optimized for the optics of the Enhanced Series spectrograph, ImSpector V10E. The Enhanced
Series also includes lenses for large sensors.

When choosing between the VNIR Enhanced Series lenses, consider the size of the samples and the desired magnification. The VNIR Enhanced Series lenses offer a range of focal lengths (9 – 140 mm) and field of view angles (4 – 52°).

OLE 18.5.PNGOLE 23.PNGOLE 140.PNG

For more information, contact our application engineers.

Specifications
Optical Characteristics OLEWide* OLE18 OLE23 OLE140
Focal Length 9 mm 18 mm 23 mm 140 mm
F-number 2.4 2.4 2.4 2.8
Spatial Image Size (max)  14.4 mm 12.4 mm 14.4 mm 12.4 mm
RMS Spot Diameter  14.8 µm 17.4 µm 15.4 µm 10 µm
Transmission  > 85% > 85% > 85% > 85%
Minimum Working Distance *  30 cm 30 cm 30 cm 10 m
Mechanical Characteristics
Dimensions  49 mm x Ø 47 mm 48 mm x Ø 53 mm 43 mm x Ø 41 mm 162 mm x Ø 65 mm
Body Material Anodized Aluminum
Mount Standard C-mount

* In this wide field-of-view lens the pixel size on the target increases towards the edges of the field of view due to spatial distortion, and thus the actual
focal length dependes on the spatial image size (detector size) used. Upon request, Middleton will provide the calibration file for the distortion in order to correct it in image processing.

Dimensions of Imaged Line (LxW) at Select Working Distances (D)
    OLEWide OLE18 OLE23 OLE140
Field of View angle (degrees) **     26.8 21.7 3.6
D = 100 mm [3.94 in] * L=   -- -- 6.29
  W=   -- -- 0.02
D = 300 mm [11.81 in] L=   142.7 114.78 18.86
  W=   0.49 0.39 0.06
D = 500 mm [19.69 in] L=   237.84 191.3 31.43
  W=   0.81 0.65 0.11
D= 750 mm [29.53] L=   356.76 286.96 47.14
  W=   1.22 0.98 0.16
D = 1000 mm [39.37] L=   475.68 382.61 62.86
  W=   1.62 1.3 0.21
D= 1500 mm [59.06] L=   713.51 573.91 94.29
  W=   2.43 1.96 0.32
D = 2000 mm [78.74 in] L=   951.35 765.22 125.71
  W=   3.24 2.61 0.43
D = 3000 mm [118.11 in] L=   1427.03 1147.83 188.57
  W=   4.86 3.91 0.64
D = 1 km [3280 ft] *** L=   475.68 382.61 62.86
  W=   1.62 1.3 0.21

VNIR Enhanced Lenses Ordering Information
Part numberDescriptionProduct Name
MRC-308-002-07 VNIR Enhanced, C-Mount Lens. 9 mm, f/2.4, C-mount, E-series, 400-1000nm OLEWide
MRC-302-002-03 VNIR Enhanced, C-Mount Lens. 18 mm, f/2.4, C-mount, E-series, 400-1000nm OLE18
MRC-302-002-04 VNIR Enhanced, C-Mount Lens. 23 mm, f/2.4, C-mount, E-series, 400-1000nm OLE23
MRC-302-002-05 VNIR Enhanced, C-Mount Lens. 140 mm, f/2.4, C-mount, E-series, 400-1000nm OLE140

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