Measuring device with measurement beam homogenization
AssigneeLeica Geosystems AG
InventorsReto Stutz, Josef Lais, Jürg Hinderling
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Abstract
An optical measuring device having a base for placing the measuring device and a targeting unit that is rotatable with respect to the base and defines a target axis for targeting a target object that is to be measured. The targeting unit has a first beam path for emitting optical measurement radiation in the direction of the target object that is to be measured. The targeting unit furthermore has a diffractive optical element (DOE), which is arranged or arrangeable in the beam path such that the optical measurement radiation is homogenized.
Claims19
An optical measuring device for coordinative measurement of a target object, the optical measuring device comprising:
- at least one light source for generating at least one optical measurement beam that is pulsed;
- and
- a targeting unit that is rotatable relative to a base of the optical measuring device about at least one axis wherein the targeting unit defines a target axis for targeting the target object that is to be measured, and has a beam path for emitting the at least one optical measurement beam in a direction of the target object that is to be measured,
- wherein the targeting unit has at least one diffractive optical element, wherein the at least one diffractive optical element is embodied such and arranged or arrangeable in the beam path such that the at least one optical measurement beam is homogenized before emission,
- wherein for, in particular temporal, homogenization of the at least one optical measurement beam before emission, a relative position of measurement beam and the at least one diffractive optical element is dynamically, in particular periodically, variable and wherein the diffractive optical element is vibrable.
A method for coordinative measurement of a target object with an optical measuring device, with targeting of the target object with a target axis of a targeting unit, wherein targeting is effected with emission of optical pulsed measurement radiation along a first beam path in a direction of the target object with an, in particular temporal, homogenization of the optical measurement radiation before emission using at least one diffractive optical element in the beam path wherein for, in particular temporal, homogenization of the optical measurement radiation before emission, a relative position of a measurement beam and the at least one diffractive optical element is dynamically, in particular periodically, varied and wherein the at least one diffractive optical element is vibrated.
Dependencies are inferred from the claim text.