Coordinate measuring machine with selectively active white light sensor
First Claim
1. Coordinate measuring machine for measuring a measurement object, comprising a workpiece support for supporting the measurement object and a measuring head carrying an optical sensor, wherein the measuring head and the workpiece support are movable relative to one another, wherein the optical sensor has a objective and a camera, which is designed to capture an image of the measurement object through the objective, wherein the objective has a light entrance opening and a light exit opening optically coupled to the camera, wherein the objective has a multitude of lens-element groups which are arranged in the objective between the light entrance opening and the light exit opening one behind another along a longitudinal axis of the objective, and wherein a first lens-element group from the multitude of lens-element groups is arranged in a stationary fashion in the region of the light entrance opening, wherein there is a clearance in the objective along said longitudinal axis between the first and a second lens-element groups, and wherein the coordinate measuring machine furthermore comprises a white light sensor and an at least partly reflective coupling element optically coupled to the white light sensor, said coupling element being selectively movable into the clearance to selectively couple the white light sensor into the objective between the first and second lens-element groups.
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Abstract
A coordinate measuring machine for measuring a measurement object, comprising a workpiece support for supporting the measurement object and a measuring head carrying an optical sensor. The measuring head and the workpiece support are movable relative to one another. The optical sensor has an objective and a camera for capturing an image of the measurement object. The objective has a light entrance opening and a light exit opening, and comprises a multitude of lens-element groups arranged in the objective between the light entrance opening and the light exit opening one behind another along a longitudinal axis of the objective. A clearance is provided in the objective between the first and second lens-element groups. The coordinate measuring machine furthermore has a white light sensor and a partly reflective coupling element that is selectively moveable into the clearance for coupling the white light sensor into the objective.
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17 Claims
- 1. Coordinate measuring machine for measuring a measurement object, comprising a workpiece support for supporting the measurement object and a measuring head carrying an optical sensor, wherein the measuring head and the workpiece support are movable relative to one another, wherein the optical sensor has a objective and a camera, which is designed to capture an image of the measurement object through the objective, wherein the objective has a light entrance opening and a light exit opening optically coupled to the camera, wherein the objective has a multitude of lens-element groups which are arranged in the objective between the light entrance opening and the light exit opening one behind another along a longitudinal axis of the objective, and wherein a first lens-element group from the multitude of lens-element groups is arranged in a stationary fashion in the region of the light entrance opening, wherein there is a clearance in the objective along said longitudinal axis between the first and a second lens-element groups, and wherein the coordinate measuring machine furthermore comprises a white light sensor and an at least partly reflective coupling element optically coupled to the white light sensor, said coupling element being selectively movable into the clearance to selectively couple the white light sensor into the objective between the first and second lens-element groups.
Specification