Used NIKON Opto 200 #9389850 for sale

NIKON Opto 200 is a wafer stepper, a type of photolithography equipment which operates at a wavelength of 325nm. It is used in semiconductor fabrication to transfer circuit patterns onto wafers containing silicon integrated circuits. Opto 200 is an automated system which isolates the integrated circuits from one another before a photomask is placed over the wafer. The mask is a transparent sheet with a pattern of integrated circuit elements which can be transferred onto the wafer. When the wafer stepper is operated, light from a mercury-xenon lamp is focused optically onto one side of the photomask. A lens on the other side of the mask then projects this light onto the wafer. A motorized wafer stage ensure that high precision images can be obtained as the wafer is moved in a plane in relation to the mask. NIKON Opto 200 features advanced imaging technologies that guarantee excellent image quality. It utilises a telecentric illuminator to ensure consistent focus over the full exposure area, as well as a phase shift mask, which is specially inscribed onto the photomask to control the intensity of the illumination evenly over the imaging area. A variable slit aperture unit also allows for higher resolution imaging. Other advanced features of Opto 200 include a multi-iris diaphragm which minimizes optical aberration and facilitates small element size imaging. The machine also uses a polarization technology which reduces stray light and increases the contrast ratio of the images. NIKON Opto 200 is a proven and reliable tool, which is recognized in the industry for its exceptional performance and precision. The asset is extremely stable and allows for reliable, repeatable results in all day-to-day operations. It has an excellent alignment model and offers very low power consumption, while also providing highly accurate positioning of the whole device. All in all, Opto 200 is an excellent wafer stepper which provides reliable, repeatable results with high accuracy. Its advanced imaging technologies ensure that excellent images can be produced, while its stability and low power consumption allows it to be the industry-standard tool for automated photolithography.