3D measuring system
AssigneeCarl Zeiss Optotechnik GmbH
InventorsErnst Semmelmann, Thomas Roth
Life of this patent
Estimating the term…
Abstract
A 3D measuring system having a projector, a camera and a chassis that connects the projector and the camera, characterized by a heating device for heating one or more components of the 3D measuring system.
Claims19
A 3D measuring system having a projector, a camera and a chassis that connects the projector and the camera, with the projector and the camera being attached to the chassis at first and second spaced apart locations, respectively, characterized by:
- a heat generating device for heating the chassis of the 3D measuring system in an area between the first and second spaced apart locations;
- wherein the heat generating device comprises one or more electrically heatable heating pads, which are attached to the chassis in the area between the first and second spaced apart locations.
A 3D measuring system having a projector, a camera and a chassis that connects the projector and the camera, with the projector and the camera being attached to the chassis at first and second spaced apart locations, respectively, characterized by:
- a heat generating device for heating the chassis of the 3D measuring system in an area between the first and second spaced apart locations;
- wherein the heat output of the heat generating device is variable;
- and
- further comprising one or more temperature sensors in one or more of the components of the 3D measuring system and a closed-loop control device for controlling the output of the heat generating device in dependence on the temperature of one or more of the temperature sensors;
- wherein the closed-loop control device controls the output of the heat generating device in dependence on a temperature of the chassis or a difference between a temperature of the chassis and a temperature of an environment, and stops or reduces the heating output of the heat generating device after the temperature of the chassis or the difference between the temperature of the chassis and the temperature of the environment reaches a predetermined temperature threshold.
A method for heating a 3D measuring system comprising a projector, a camera and a chassis that connects the projector and the camera, with the projector and the camera being attached to the chassis at first and second spaced apart locations, respectively, a heat generating device for heating the chassis of the 3D measuring system in an area between the first and second spaced apart locations, and a closed-loop control device for controlling the output of the heat generating device;
- the method comprising the steps of:
- heating the chassis during or soon after the start-up of the 3D measuring system;
- and
- controlling the output of the heat generating device in dependence on a temperature of the chassis or a difference between a temperature of the chassis and a temperature of an environment, and stopping or reducing the heating output of the heat generating device after the temperature of the chassis or the difference between the temperature of the chassis and the temperature of the environment reaches a predetermined temperature threshold.
Dependencies are inferred from the claim text.