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3. T
To delete a
and reform
mat the SD
D card.
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Connect th
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or smart d
devices.
3.7. Lens
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This table l
T
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cal Length
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IF
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D:S
D
theoretical
of the Ther
o
rmal Image
Exam
mple: If Th
34um
m. Horizon
ntal FOV is
3
34um/7.5m
mm = 4.53m
D
D:S
theoretical
D:S
D
measure =
D
D:S
(
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te
emperatur
re measure
T
Typically,
te
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th
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ists the ho
orizontalFO
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21°
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antaneous
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( = 1/ IFO
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l
theoretical
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hermal Ima
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l
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measure
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he calculate
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ertical FOV
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ocal length
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s, because
rtical FOV
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)
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s the spot
t size nee
times sma
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arget need
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enu as des
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fer the save
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IFOV for l
ens.
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OV
4.5
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detail with
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d. The form
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ot size bas
sed on the
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e the Pixe
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eded to p
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to be 2 to
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HT64
4
Section 6
to the PC
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:
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