Incorporating CFI60 optics for flawless inspection of 200mm wafers and masks.
Combined with Nikon's superior CFI60 LU/L optical system and an extraordinary new illumination system, this microscope provides images with greater contrast, high resolving power and darkfield images three times brighter than before. Used independently, or in combination with wafer loaders, the L200 series performs exceptionally precise optical inspection of wafers, photo masks, reticles and other substrates.
L200: Offers 200mm wafer and mask inspection capabilities for reflected light illumination defect identification with various observation methods such as brightfield, darkfield, simple polarizing and DIC.
L200ND: Offers 200mm wafer and mask inspection capabilities for both transmitted and relfected light illumination. In addition to the observation methods of the L200N, epi-fluorescence observations including 365nm UV exicitation is possible.
The bodies of these microscopes are finished with electrostatic discharge coatings to prevent foreign particles from adhering to the microscope. Furthermore, the motorized nosepiece uses a shielded center motor that traps foreign particles inside, preventing them from falling onto the sample.
The high intensity 12V-50W halogen illuminator, (LV-LH50PC) provides greater brightnessthat than of a 12V-100W halogen illuminator with half the power consumption. This new lamphouse incorporates a rear mirror and optimized lamp filament size to allow effective and uniform illumination on the pupil plane which is critical in an optical plane.
Nikon's CFI LU Plan objectives allow the use of multiple observation techniques, including brightfield, darkfield, and Nomarski DIC using a single objective. For DIC, simply insert a single Nomarski prism into the nosepiece that works for all magnification ranges.
Incorporating a SEMI-compliant design, controls and knobs are positioned low and close to the operator while the eyepoint is set at the ideal height for comfortable operation. With the controls located comfortably in the microscope base, hand movement is minimal, allowing concentration on the inspection process. The eyepiece is moved closer to the operator so that he or she can assume a more erect sitting posture. This also positions the operator farther from the stage to provide a more ergonomic and safe viewing position.
The eyepiece tube is of the trinocular tilting type, allowing continuous adjustment of the tilt angle from 0° to 30° for viewing at the optimum eyepoint level. The eyepiece also features an ultra-widefield design and has an F.O.V. of 25mm.
The X-Y fine-movement controls remain in the same position, close to the front, for a comfortable viewing posture regardless of the stage position. In addition, these controls, plus the focus knob, are located close to each other so you can operate both with one hand.
The motorized universal nosepiece for the L200N series microscope has improved centricity and is three times more durable than conventional models. It also contains an anti flash mechanism to protect the operators eyes when the nosepiece is rotated. The L200A built in motorized nosepiece includes a slot for DIC attachments, features a mechanical click stop and is controlled by software that enables the system to stop precisely at each respective objective position.
Provide outstandingly clear, sharp images with longer working distances, high numerical aperture (NA) and minimal flare. Signal to background ratios during darkfield observations are three times better than before to provide outstanding high contrast images ideal for high precision observations.
Applying computer-aided engineering (CAE), Nikon increased the rigidity of the L200 series dramatically, making these microscopes three times less susceptible to floor vibrations when compared with conventional equipment. This, in turn, reduces the chance of unwanted blur or image shifts even during high magnification observations. While this superior design increases stability, it also results in a smaller footprint.
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