Abstract: An adjustable lens assembly includes a lens barrel for carrying a lens, at least one guiding member having a shaft axis parallel to the optical axis of the lens barrel for guiding the direction of motion of the lens barrel, a gear shaft driven by a driving source, a driving member meshing with the gear shaft, and a connection mechanism connecting the lens barrel and the driving member. The connection mechanism is capable of adjusting itself with multiple degrees of freedom so that if there is three-dimensional skew bias between the gear shaft and the optical axis or the guiding member, the lens barrel can be driven smoothly.

Abstract: Anisotropic pyrolytic graphite wafers are oriented and bonded together such that the graphite's high thermal conductivity planes are maximized along the back surface of the segmented pyrolytic graphite target to allow for optimum heat conduction away from the sputter target's sputtering surface and to allow for maximum energy transmission from the target's sputtering surface.