Mitutoyo LCD Plan Apochromat NUV objective lenses are designed to focus from near UV through visible wavelengths onto the same plane for sharpest possible image.  The LCD Plan Apochromat NUV Series objective lenses correct for chromatic aberration throughout the near ultraviolet and visible spectrum, and are specially designed for LCDs with a glass cover.

Applications

• CNC Vision Measuring Machines equipped with microscope systems and covering with a wide range of requirements and specifications to reduce inspection labor costs while raising throughput, enable more accurate measurements, and improve the working environment by eliminating difficult tasks
• Non-contact visual CMMs for high inspection speed of microscopic detail,
• Microspectroscopes, to measure reflective optical characters in very small areas,
• Interferometers that use a single or pair of objective lens microscopes; Fizeau interferometer, Michaelson interferometer, Linnik interferometer, 
• Microscope-equipped lasers, used to peel off a semiconductor's passivation layer to enable probing and for laser processing repair of defects in semiconductor and masks

Typical Optical System for Laser Processing:

• Semiconductor sub-micron level inspection for Defect Analyzer (Prober Station) and detection of faint light emitted by leaks.

Features

• The Finescope 70 Microscope Series is an infinity-corrected optical system that uses both the 378- Series objective lens and the MT Series imaging lens (tube lens) to generate images with aberration correction performed independently on the objective lens and imaging lens. This allows these products to be used independently or as part of an expandable system, with the imaging lens set as needed for customer applications.
• Optimized for brightfield observations and laser microscopy applications in the near ultraviolet and visible spectrum. 
• Anti-reflective (AR) UV/Visible coating applied for maximum optical performance,
• Apochromatic NUV (Apo NUV) objectives feature corrected color aberration over a wide range across the visible light and near ultraviolet spectrum.  This has been achieved by selectively using anomalous dispersion glass and ultra-low dispersion glass with a low refractive index. The wavelength-based refractive index in these types of glass differs from that of ordinary optical glass.Aberrations tend to occur for an objective lens with a longer working distance, and chromatic aberration is especially likely to occur. This correction of lateral chromatic aberration and astigmatism results in the M Plan Apo NUV Series products capability to provide the sharpest possible image.  

Chromatic Aberration

• Ergonomic design and simple controls provide an ease of operation and user comfortability, 
• High transmittance in the near UV spectrum,
• Long working distance, specially designed to correct for LCDs with cover glass.
• Higher magnification, and large numerical aperture for sub-micron resolution.  

Specifications

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