Polytec PSV-500, Hardware Manual

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A-10
A Optional Accessories
A.5.1.2 Technical Specifications
General Data
Close-Up Lenses
With the close-up unit a set of lenses for the close-up range with different
focal lengths (1, 2 and 4 diopters) is delivered. A maximum of two lenses, or
one lens and the block filter can be mounted simultaneously. The lenses for
the close-up range are also screwed directly on the video camera aperture of
the scanning head before mounting the close-up unit. The stand-off distances
of the different lenses and combinations of lenses are shown in the following
table.
Table A.1: Stand-off distances and scan ranges of the close-up lenses
Max. scanning angle in x-direction: ± 5°
Max. scanning angle in y-direction: ± 4°
Dimensions (w x h x d): 124 mm x 90 mm x 75 mm and
FIGURE
A.6
Weight: 0.35 kg
Close-up lens or
combination
Stand-off
distance
1
1
Measured from the front of the scanning head
Min. detail size
2
2
In the center of the video image at telephoto position and maximum stand-off distance
Max. object
size
3
3
With maximum stand-off distance
Spot diameter
3
Depth of focus
of the laser
4
4
Max. 3 dB signal level decay
[diopters] [mm] [µm] [mm] [µm] [mm]
2 315 … 500 25 101 x 85 44 ± 2.3
2 + 1 240 … 335 20 72 x 45 34 ± 1.4
4 190 … 250 15 57 x 50 28 ± 0.97
4 + 1 160 … 200 13 48 x 43 25 ± 0.76
4 + 2 135 … 170 11 43 x 39 23 ± 0.65