Filter Types - IDS NXT malibu Technical Manual

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8.6 Filter types

Every camera has a filter glass in the front flange to prevent the entry of dust particles. Color cameras by
default use an IR cut filter (type HQ), which is required to ensure correct color rendering. For monochrome
cameras, the standard filter is a glass filter (type GL). The filter type is given at the end of the model name.
The following table shows an overview of the different optical filters used in IDS cameras:
Filter type Name
IR cut filter HQ
Glass
GL
Daylight cut
DL
filter
You can tell the filter type from the outside by its coloration:
·
Reddish glass: HQ filter
·
Plain glass: GL filter
·
Dark glass: DL filter
All sensors have a cover glass. The transmission of the cover glass is taken into account in
the camera data sheet.
2023-10-25
Refractive
index
(n )
Filter Glass type
1.53 D263
1.53 D263T
1.53 RG695
IDS NXT malibu: Technical Manual
Thickness Cut-on
(f) wavelength
1 mm -
1 mm 330 nm
1 mm 695 nm
Cut-off Non-
wavelength reflective
650 ±10 nm On one side
On both
-
sides
- -
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