A method and a device for detecting a geometric feature of consistent molded parts takes into account the different stages of cooling due to different durations of transport of the individual removed molded parts to the inspection system. Both the geometric feature and the temperature of each molded part is measured. The detected geometric features are corrected using a calibration function taking into account the measured temperatures.

An articulating probe head for a measuring system comprising cooling elements. The cooling elements are modulated in response to the temperature of or the power dissipated in the probe head such that its temperature remains stable during operation.

An apparatus for three-dimensional shape measurement is provided, including a projection device, an image capture device, and an image processing device. The projection device sequentially projects a plurality of structured light beams on a scene during a first projection period and a second projection period. The mean level of the structured light beams during the first projection period is the same as the mean level of the structured light beams during the second projection period, and the frequency of the structured light beams during the first projection period is different from the frequency of the structured light beams during the second projection period. The image capture device captures an image of the scene within the projection time of each of the structured light beams. The image processing device obtains a three-dimensional shape of a to-be-measured object in the scene according to the images.

The three-dimensional measuring method includes: a conveying step of conveying a workpiece to be measured by a robot arm configured to change an attitude of the workpiece; a measuring step of performing three-dimensional measurement on the workpiece by a probe configured to be movable relative to the surface plate in a state in which the workpiece is held by the robot arm; a relative-position change detecting step of detecting a change in a relative position between the surface plate and the robot arm; and a vibration correcting step of correcting a result of the measurement performed on the workpiece in the measuring step based on a result of detection performed in the relative-position change detecting step.

A coordinate positioning machine includes a drive frame and a metrology frame. The drive frame includes a drive arrangement for moving a structure around a working volume of the machine. The metrology frame includes a metrology arrangement for measuring the position of the structure within the working volume. The metrology arrangement is a hexapod metrology arrangement and the drive arrangement is a non-hexapod drive arrangement. The metrology frame has a coefficient of thermal expansion that is lower than that of the drive frame. The drive frame is coupled to the metrology frame via a coupling arrangement which prevents at least some distortion associated with any extra thermal expansion and contraction of the drive frame from being transferred to the metrology frame. The drive arrangement moves the structure around the working volume, and the metrology arrangement measures the position of the structure within the working volume.

Methods and apparatus provide for obtaining a gravity free shape, and intrinsic shape, and a thermal strain of a glass sheet and using same to improve glass manufacturing techniques.

Exposure with sufficient optical energy is enabled while avoiding temperature rise of laser light emitting elements. Therefore, a light source device includes the plurality of laser light emitting elements and a drive unit. The drive unit drives each of the laser light emitting elements to perform a plurality of light emissions in one frame period in an image sensor that receives and captures light emitted from the plurality of laser light emitting elements and reflected by a subject.

Provided is a method for more accurately correcting position coordinates of a point on an object to be imaged, the coordinates being identified based on values detected by linear scales. A visual field is moved to a measurement point defined on a recessed portion formed on a calibration plate, and an image is captured (step S13-1), edges are detected from an image of sides of the recessed portion (step 313-2), an intersection of the edges is calculated (step S13-3), values of the intersection as actually measured by the linear scales are saved (step S13-4), and position coordinates of the point on the object to be imaged as detected by the linear scales are corrected by using a true value and a difference.

An assembly comprises a support including a plurality of individual sections. A scale is disposed on the support. The scale extends in a longitudinal direction and has a measuring graduation for position measurement at least in the longitudinal direction. A plurality of fastening devices are configured to fasten the scale to the support. The fastening devices are disposed on the individual sections of the support.

A measuring device is adapted for measuring a change of linear dimension of a shaft body of a bearing device along an axis due to thermal expansion. The measuring device includes a stationary seat and a strain unit. The strain unit includes an actuator and a strain member. The actuator is adapted to be mounted to the shaft body, and is movable relative to the stationary seat along the axis as a result of the change of linear dimension of the shaft body. The strain member is deformable, is secured to the stationary seat and is connected to the actuator such that movement of the actuator along the axis results in a force applied to the strain member which deforms the strain member.