摘要:
A vibration isolator (200) for isolating a first assembly (206) from vibration from a second assembly (208) includes a first system (202) and a second system (204) coupled to the first system (202). In one embodiment, the first system (202) supports the majority of the first assembly (206) relative to the second assembly (208) and the second system (204) adjusts for a change in the location of the center of gravity of the first assembly (206). Further, the second system (204) can be used to compensate for fluctuations in the atmospheric pressure near the vibration isolator (200).
摘要:
Adaptive optical elements for use in high precision lithography exposure are provided with an array of discrete actuators to provide highly stable and repeatable correction of the shape of an optical element to an accuracy of a small fraction of a very short wavelength of light in the EUV range of 1 to 50 nanometers, responsive to a metrology source and sensor arrangement. The actuators are matched to the deformation characteristics of the adaptive optical elements. Preferably, the actuators provide both positive and negative force for outward and/or inward deflection continuously over the surface of the mirror. The surface of the optical element may thus be accurately, controllably and repeatably deformed to within an allowable deformation limit to optimize optical performance of an optical system for high precision lithography exposure.
摘要:
An exemplary apparatus includes a controllably movable body, a holding device, and a coolant circulation device. The body comprises a wall including a planar contact surface that receives the reverse surface of the article. The wall co-extends with at least a heat-receiving area of the utility surface whenever the article is being held by the body. The wall also includes a second surface separated from but proximal to the contact surface, and is thermally conductive from the contact surface to the second surface. The holding device holds the article to the contact surface with the reverse surface contacting the contact surface. The coolant circulation device delivers flow of a coolant fluid to the second surface to urge conduction of heat from the contact surface to the second surface. The holding device and coolant-circulation device operate in concert to actively control shape of the article being held by the apparatus.
摘要:
An optical system including an optical element, a positioning mechanism configured to position the optical element into an operational position, and a temperature control mechanism configured to intermittently control the temperature of the optical element between operations. By alternatively positioning the optical element between an operational position and a position in thermal contact with the temperature control mechanism, the two mechanisms for positioning and controlling the temperature of the optical element are de-coupled from one another. As a result, the mechanism for each may be optimized In non-exclusive embodiments, the temperature control mechanism may be used to control the temperature of an individual optical element or a plurality of optical elements, such as for example, a fly's eye mirror used in an illumination unit of an EUV lithography tool.
摘要:
An exemplary apparatus includes a controllably movable body, a holding device, and a coolant circulation device. The body comprises a wall including a planar contact surface that receives the reverse surface of the article. The wall co-extends with at least a heat-receiving area of the utility surface whenever the article is being held by the body. The wall also includes a second surface separated from but proximal to the contact surface, and is thermally conductive from the contact surface to the second surface. The holding device holds the article to the contact surface with the reverse surface contacting the contact surface. The coolant circulation device delivers flow of a coolant fluid to the second surface to urge conduction of heat from the contact surface to the second surface. The holding device and coolant-circulation device operate in concert to actively control shape of the article being held by the apparatus.
摘要:
Methods and apparatus for cooling a reticle are disclosed. According to one aspect of the present invention, an apparatus for providing top side cooling to a reticle includes a heat exchanger arrangement and an actuator. The heat exchanger arrangement includes a first surface arranged to facilitate heat transfer between the reticle and the heat exchanger arrangement. The heat transfer provides cooling to at least some portions of the reticle. The actuator positions the first surface of the heat exchanger arrangement at a distance over the reticle.
摘要:
A device container assembly (30) for storing a reticle (26) includes a first container (246) and a device retainer assembly (248). The first container (246) encircles and encloses the reticle (26). The device retainer assembly (248) selectively couples the reticle to the first container (246). The device retainer assembly (248) can include an adjustable first device retainer (256) having a retainer section (280A) that is movable relative to the first container (246) between an engaged position (281A) in which the retainer section (280A) engages the reticle (26) and a disengaged position (281B) in which the retainer section (280A) does not engage the reticle (26). With this design, the device container assembly (30) can retain the reticle (26) in a secure fashion and the integrity of the reticle (26) is maintained by the device container assembly (30).
摘要:
An exposure apparatus (10) that includes a support frame (12), a base frame (14), a first stage assembly (16), a second stage assembly (18), an optical frame (20), an optical device (22), and a measurement system (24) is provided herein. The exposure apparatus (10) is typically mounted to a mounting base (30). As provided herein, the optical frame (20), the optical device (22), and a portion of the measurement system (24) can be assembled as an optical assembly (36) that is isolated from the base frame (14) with an optical isolation system (42). Further, the base frame (14), at least a portion of the first stage assembly (16) and the second stage assembly (18) can be assembled as a base assembly (38) that is isolated from the support frame (12) with a base isolation system (40). With this design, the base assembly (38) is isolated from the support frame (12) with the base isolation system (40) and the optical assembly (36) is isolated from the base assembly (38) with the optical isolation system (42). As a result thereof, the assemblies (36), (38) are effectively attached in series to the mounting base (30) with the isolation systems (40), (42) and the optical device (22) is isolated from the mounting base (30) with two levels of isolation. The two levels of isolation systems (40), (42) better isolate the optical device (22) from vibration and disturbances. Further, with the design provided herein, the optical device (22) and the other components of the optical assembly (36) can be accessed relatively easily for service and adjustment.
摘要:
According to one aspect of the present invention, an apparatus includes a surface and a first array. The surface emits radiation, and the first array is arranged over the surface and arranged to provide cooling to the surface, the first array including a plurality of TECs. At least a first sensing arrangement is substantially integrated with the first array, wherein the first sensing arrangement is arranged to make a non-contact measurement associated with the surface. The apparatus also includes a controller arranged to obtain the non-contact measurement and to use the non-contact measurement to control the cooling provided by the first array.
摘要:
An apparatus for controlling the distortion of a reticle (28) includes a temperature adjuster (258) and a control system (226). The temperature adjuster (258) includes a plurality of adjuster elements (258E) that individually adjust the temperature of a plurality of regions (28R) of the reticle (28). The control system (226) includes a state observer (250) and a controller (260). The state observer (250) estimates an estimated physical condition (250C) of the reticle (28). The controller (260) controls the adjuster elements (258E) of the temperature adjuster (258) based at least in part on the estimated physical condition (250C).