Now that the scanning frame has been aligned relatively accurately (Feb17), the standoff distance between the NIR lightbox and the scanning frame can also be assessed in a meaningful way. A measurement with gauge blocks between the bottom of the light box and the scanning frame next to white reference (09 Feb 17, see pics below) showed a standoff distance of 7.05 mm on the door side of the box and 6.00 mm on the back-wall side. Due to the way the light box is suspended it can easily beshimmed to achieve evenness at any desired standoff distance.
No assessment was done in x-direction as scan line is only ~ 1 mm in that direction.
DB0096 [Created: 2017-02-09 by Armin]
Now that the scanning frame has been aligned relatively accurately (Feb17), the standoff distance between the NIR lightbox and the scanning frame can also be assessed in a meaningful way. A measurement with gauge blocks between the bottom of the light box and the scanning frame next to white reference (09 Feb 17, see pics below) showed a standoff distance of 7.05 mm on the door side of the box and 6.00 mm on the back-wall side. Due to the way the light box is suspended it can easily beshimmed to achieve evenness at any desired standoff distance.
No assessment was done in x-direction as scan line is only ~ 1 mm in that direction.