The what, when, how, and why with Closed Face Reflector and Enabling a Vector Offset in Verisurf for Laser Trackers

The what, when, how, and why with Closed Face Reflector and Enabling a Vector Offset in Verisurf for Laser Trackers

Case:

The what, when, how, and why with Closed Face Reflectors and Enabling a Vector Offset in Verisurf for Laser Trackers

What:

Closed Face Reflectors cause refraction (deflection) when passing through the Face of the Reflector, resulting in the Laser Beam traveling a further distance. The additional distance value needs to be subtracted from the Laser Beam distance to represent the correct distance to the center of the Reflector.

When:

Vector Offset is used to increase or decrease the length of the Laser Tracker Beam when using accessories such as Closed Face Reflectors and OEM devices such as the API Active Target.

Note:
Closed Face Reflectors have many names including but not limited to TBR, Tooling Ball Reflector, Windowed SMR, Prism Reflector, and Prismatic SMR. Closed Face Reflectors and are not specific to a brand of Laser Tracker and are used with Leica, FARO, and API Laser Trackers.

How:

The 0.5000" Closed Face Reflector requires a Vector Offset of 0.2091" or 5.310 mm. If an API Active Target is being utilized, the Vector Offset value will be identified on the device and certification of calibration.

Note:
While the 0.5000" Closed Face Reflectors are common, they also exist at 1.5000". The prisms used in both configurations are identical in size. Therefore the Vector Offset will be 0.2091" or 5.310 mm for the two sizes.


From the Probe Manager:

  1. Select TBR 0.5in from the drop-down menu
  2. Check the box to Enable Offset
  3. Enter -.2091" in the Vector Offset field
  4. Select the OK button

Creating a 1.5000" Closed Face Reflector:

  1. Select the Create New Probe icon
  2. Input the desired Probe Name
  3. Select the OK button

  1. Enter 1.5000 in the Probe Diameter field
  2. Check the box to Enable Offset
  3. Enter -.2091" in the Vector Offset field
  4. Select the OK button

Creating an API Active Target:

  1. Select the Create New Probe icon
  2. Input the desired Probe Name
  3. Select the OK button

  1. Enter 0.0000 in the Probe Diameter field
  2. Check the box to Enable Offset
  3. Enter the provided value in the Vector Offset field
  4. Select the OK button

Why:

Closed Face Reflectors are more robust and help protect the reflective surfaces in environments that would otherwise compromise the measurements from an Open Reflector. It is not uncommon to see Collars on Closed Face Reflectors, the Collars are used to restrict the angle and ensure accurate measurements.

Please call Verisurf Support at 1-888-713-7201 if you have any further questions or concerns

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