Abstract: A position encoder for monitoring position of an object includes a target pattern, an illumination system, an image sensor, and a control system. The illumination system generates (i) a first illumination beam that is directed toward and impinges on the target pattern, the first illumination beam having a first beam characteristic; and (ii) a second illumination beam that is directed toward and impinges on the target pattern, the second illumination beam having a second beam characteristic that is different than the first beam characteristic. The image sensor is coupled to the object and is spaced apart from the target pattern. The image sensor senses a first set of information from the first illumination beam impinging on the target pattern and senses a second set of information from the second illumination beam impinging on the target pattern. The control system analyzes the first set of information and the second set of information to monitor the position of the object.

Abstract: A stage assembly (10) that moves a device (15) includes a stage (14) that retains the device (15), a base (12), a stage mover assembly (16), and a supply system (20A). The supply system (20A) is secured to and positioned on the stage (14). The supply system (20A) includes a circulation system (24) that circulates a circulation fluid (22) through a circulation conduit (14D) in the stage (14) to control the temperature of the stage (14) and the device (15).

Abstract: A rotary probe head having a dual interface for probe mounting that allows two separate interfaces to be mounted on opposite sides of the “A” or elevation axis of the rotary probe head. The two interfaces can be rotatable and interchangeable and allow for increased flexibility in handling different types of attachments including attachments having widely different mass, size, and/or interface connections. A probe can be mounted to one interface and a counterweight can be mounted to the opposite interface for improved holding torque performance by reducing the duty force and heat factor generation of the motor in the probe head.

Abstract: A position encoder for monitoring position of an object includes a target pattern, an illumination system, an image sensor, and a control system. The illumination system generates (i) a first illumination beam that is directed toward and impinges on the target pattern, the first illumination beam having a first beam characteristic; and (ii) a second illumination beam that is directed toward and impinges on the target pattern, the second illumination beam having a second beam characteristic that is different than the first beam characteristic. The image sensor is coupled to the object and is spaced apart from the target pattern. The image sensor senses a first set of information from the first illumination beam impinging on the target pattern and senses a second set of information from the second illumination beam impinging on the target pattern. The control system analyzes the first set of information and the second set of information to monitor the position of the object.

Abstract: A stage assembly (10) that moves a device (15) includes a stage (14) that retains the device (15), a base (12), a stage mover assembly (16), and a supply system (20A). The supply system (20A) is secured to and positioned on the stage (14). The supply system (20A) includes a circulation system (24) that circulates a circulation fluid (22) through a circulation conduit (14D) in the stage (14) to control the temperature of the stage (14) and the device (15).

Abstract: A stage assembly (10) that moves a device (15) includes a stage (14) that retains the device (15), a base (12), a stage mover assembly (16), and a supply system (20A). The supply system (20A) is secured to and positioned on the stage (14). The supply system (20A) includes a circulation system (24) that circulates a circulation fluid (22) through a circulation conduit (14D) in the stage (14) to control the temperature of the stage (14) and the device (15).

Abstract: A rotary probe head having a dual interface for probe mounting that allows two separate interfaces to be mounted on opposite sides of the “A” or elevation axis of the rotary probe head. The two interfaces can be rotatable and interchangeable and allow for increased flexibility in handling different types of attachments including attachments having widely different mass, size, and/or interface connections. A probe can be mounted to one interface and a counterweight can be mounted to the opposite interface for improved holding torque performance by reducing the duty force and heat factor generation of the motor in the probe head.

Abstract: A stage assembly (10) that moves a device (15) includes a stage (14) that retains the device (15), a base (12), a stage mover assembly (16), and a supply system (20A). The supply system (20A) is secured to and positioned on the stage (14). The supply system (20A) includes a circulation system (24) that circulates a circulation fluid (22) through a circulation conduit (14D) in the stage (14) to control the temperature of the stage (14) and the device (15).