164
Alvium USB Cameras User Guide V3.6.4
Specifications
IR cut filter
Table 71
shows which Alvium models are equipped with an IR cut filter. The filter is
permanently installed and cannot be removed.
Cameras
without
IR cut filter have a higher sensitivity for low-light imaging.
Moreover, spectral sensitivity is increased.
Cameras
with
IR cut filter are more accurate in reproduction of color, contrast, and
sharpness, as the filter absorbs near-IR wavelengths. See
transmission.
Color or monochrome model
Bare board
S-Mount
CS-Mount
C-Mount
Color
No filter
Type Hoya C-5000 IR cut filter
Monochrome
No filter
Table 71: Optical filter availability
Spectral transmission values
The following curve shows typical transmission for type Hoya C-5000 IR cut filter.
Values may vary slightly by filter lot.
Figure 59: Type Hoya C-5000 IR cut filter spectral transmission
S-Mount lenses with IR cut design
For improved image quality, we recommend using S-Mount lenses that are
IR- optimized or that have IR cut coating. See the S-Mount Lenses User Guide at
www.alliedvision.com/fileadmin/content/documents/products/accessories/lenses
/Allied_Vision/User_Guide/S-Mount-Lenses_User-Guide.pdf
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
1050
1100
1150
1200
Tr
ansmission [%]
Wavelength [nm]
i
