Boresighting; Boresighting At 1550 Nm; Boresighting At 830 Nm - Safran LRF 6019 Manual

LRF 6019 Integrator Manual

4.5 Boresighting

The module receiver and transmitter are boresighted in the factory. For this reason, the module can be
mounted and replaced easily. LRF 6019 offers two wavelengths for boresighting.
4.5.1

Boresighting at 1550 nm

For a professional boresighting of the LRF module with the main optical axis of the host system, we recommend the
use of a collimator and a camera sensitive to the 1'550 nm wavelength of the laser module. Vendors of 1'550 nm
cameras (SWIR cameras) include:

XenICs (www.xenics.com) (e.g. XEVA-1.7-320)

Sensors Unlimited (www.sensorsinc.com) (e.g. 640HS-1.7RT)

Allied Vision Technologies (www.alliedvisiontec.com) (e.g. Goldeye P-008 SWIR)

Raptor Photonics (www.raptorphotonics.com)
Collimators can be sourced from:

Inframet (www.inframet.com).

Möller Wedel Optical (http://www.moeller-wedel-optical.com).
Note: The LRF module provides a low power continuous lasing mode to make its line of sight visible to SWIR
cameras. Please see chapter 6.5.3 for details.
4.5.2

Boresighting at 830 nm

LRF 6019 can be equipped at the factory with an optional 830 nm pointer. If this option is chosen,
professional boresighting of the LRF module with the main optical axis of the host system can be done
with the 830 nm pointer. The alignment procedure is identical to the procedure at 1550 nm, except for the
camera. To make the laser spot of 830 nm visible, a regular NIR camera can be attached to the
collimator. These cameras are significantly cheaper than 1550 nm cameras.
In case that the laser pointer is too strong for the camera, filter glasses can be used to attenuate the
beam intensity. Please note that the wedge error of the filter has a direct impact on the alignment
accuracy and therefore has to be as small as possible. We recommend using a filter with a max. wedge
error of 10 arc sec. Filter glass can be sourced, for example, from Schott.
Schott Filter glasses KG1, KG2, KG3 or KG5 can be selected, depending on the requested attenuation
factor.
http://www.schott.com/advanced_optics/english/products/optical-components/optical-filters/optical-filter-
glass/index.html
If such equipment is not available, the 830 nm pointer can also be made visible by using a Night Vision
device. By using a boresight chart at a defined distance, the LRF can be aligned by bringing the main
optical axis of the host system and the LRF to the predefined positions on the boresight chart.
914928_TML_LRF6019_en_Version C
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Figure 14: Alignment Set-up with collimator and 1550 nm camera
Public: 04.2019
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