Abstract: An enclosure for an imaging device. In one embodiment, the enclosure includes a housing with a transparent window. A shutter mechanism is disposed on the housing and transparent window, and includes an opening formed therein. A shutter covers and uncovers the opening. Further, a gas supplying unit supplies gas to a space between the housing and the shutter mechanism. In another embodiment, the enclosure includes an inner housing with a transparent window, and an outer housing overlapping the inner housing and with an opening formed therein. A driving unit moves the opening along a predetermined path over the transparent window. A gas supplying unit supplies gas to the outer. In yet another embodiment, the enclosure includes inner and outer housings each having an opening formed therein. A rotating unit rotates one of the inner and outer housings, and a gas supplying unit supplies gas to the inner housing.

Abstract: The calibration device 1 is set up in a machine tool 50 and provides: a image capture subject material 10 having a calibration pattern 14 that includes one feature point and being attached to the spindle 55, two-dimensional coordinate calculation parts 22, 23 that calculate the two-dimensional coordinates of feature points based on the two-dimensional image data that is created from the images of the calibration pattern 14 that were captured at multiple movement positions of the spindle 55 by the CCD camera 58; a three-dimensional coordinate calculation part 24 that calculates the three-dimensional coordinates of the feature points that correspond to each movement position of the spindle 55; and a parameter calculation part 26 that calculates the intrinsic parameters and extrinsic parameters of the CCD camera 58 based on the two-dimensional coordinates and three-dimensional coordinates at each movement position of the spindle 55.

Abstract: An enclosure for an imaging device. In one embodiment, the enclosure includes a housing with a transparent window. A shutter mechanism is disposed on the housing and transparent window, and includes an opening formed therein. A shutter covers and uncovers the opening. Further, a gas supplying unit supplies gas to a space between the housing and the shutter mechanism. In another embodiment, the enclosure includes an inner housing with a transparent window, and an outer housing overlapping the inner housing and with an opening formed therein. A driving unit moves the opening along a predetermined path over the transparent window. A gas supplying unit supplies gas to the outer. In yet another embodiment, the enclosure includes inner and outer housings each having an opening formed therein. A rotating unit rotates one of the inner and outer housings, and a gas supplying unit supplies gas to the inner housing.

Abstract: The calibration device 1 is set up in a machine tool 50 and provides: a image capture subject material 10 having a calibration pattern 14 that includes one feature point and being attached to the spindle 55, two-dimensional coordinate calculation parts 22, 23 that calculate the two-dimensional coordinates of feature points based on the two-dimensional image data that is created from the images of the calibration pattern 14 that were captured at multiple movement positions of the spindle 55 by the CCD camera 58; a three-dimensional coordinate calculation part 24 that calculates the three-dimensional coordinates of the feature points that correspond to each movement position of the spindle 55; and a parameter calculation part 26 that calculates the intrinsic parameters and extrinsic parameters of the CCD camera 58 based on the two-dimensional coordinates and three-dimensional coordinates at each movement position of the spindle 55.