Mechanical dimensions
180
Prosilica GT Technical Manual V3.2.0
Optical filters
All Prosilica GT color models are equipped with an infrared block filter (IR cut
filter). This filter prevents infrared light from passing to the sensor. In the absence
of an IR cut filter, images are dominated by red and are incapable of being properly
color balanced. Monochrome cameras do not employ an IR cut filter.
The following figure shows the filter transmission response for the IRC30 filter, and
the optional Schneider 486 IR cut filter, RG715 type IR pass filter, RG830 type IR
pass filter, and B 270 ASG protection glass. The Schneider 486 IR cut filter is only
available with Prosilica GT Large Format cameras. The RG830 and RG715 type IR
pass filters are only available with Prosilica GT standard and extended format
cameras.
Figure 113: Spectral transmission of filters
0
10
20
30
40
50
60
70
80
90
100
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
Tr
a
n
smi
ssion
[%]
Wavelength
[nm]
Spectral
transmission
of
filters,
350
nm
to
1000
nm
(Exemplary
curves,
values
may
vary
by
filter
lot)
B
270
ASG
protection
glass
IRC30
type
IR
cut
filter
Schneider
486
IR
cut
filter
RG715
type
IR
pass
filter
RG830
type
IR
pass
filter
