
With the lens denoted “24 µm VNIR Microscope” the linear field of view is 37.6 mm, corresponding to an on-axis pixel size of 24 µm.
The image below, acquired with this set-up, shows sand sprinkled over an even surface. Average grain size is < 0.5 mm but still the reflectance of a single grain is easily discriminate since it comprises hundreds of pixels.
| The picture to the right shows a VNIR-1600 mounted on a lab rack and equipped with the 24 µm VNIR Microscope. Note the small translation stage, which is used for focusing the camera. |
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