Mitutoyo LCD Plan Apo NIR 20x Objective (NA 0.40, WD 20mm, 480–1800nm, M26)
Regular price
$3,300.00
The Mitutoyo LCD Plan Apo NIR 20× Objective is a specialized near-infrared and SWIR optimized plan apochromat objective from Mitutoyo’s LCD Plan Apo NIR series — delivering 20× magnification with a 20mm working distance, 480–1800nm spectral range, and optical correction specifically designed for imaging through a protective cover glass or flat panel substrate. The LCD designation distinguishes this objective from the standard M Plan Apo NIR series: it is corrected for use with specimens viewed through a cover glass or protective glass layer, making it the correct choice for LCD panel inspection, encapsulated specimens, and any NIR/SWIR application where a glass layer lies between the objective and the specimen.
KEY FEATURES
- LCD / cover glass corrected — the defining feature of the LCD Plan Apo NIR series; optically corrected for imaging through a protective cover glass or flat panel substrate, eliminating the spherical aberration that standard (non-cover-glass-corrected) objectives introduce when imaging through glass layers
- NIR/SWIR spectral range: 480–1800nm — transmission extending to 1800nm enables LCD panel inspection at NIR wavelengths, InGaAs camera imaging, SWIR fluorescence, and Raman spectroscopy with long-wavelength excitation lasers
- Long working distance: 20mm — exceptional clearance for a 20× objective, providing ample room for large panel specimens, environmental chambers, and inspection fixtures
- NA 0.40 at 20× — practical numerical aperture for a long working distance NIR/SWIR objective, delivering good resolution for panel inspection, defect detection, and wide-area NIR/SWIR survey
- Plan apochromat correction — Mitutoyo’s highest level of chromatic and spherical aberration correction for accurate, flat-field imaging across the full 480–1800nm spectral range
- Infinity-corrected, M26 thread — compatible with Mitutoyo FS series microscopes and other infinity-corrected systems with M26 nosepieces
- 🇯🇵 Mitutoyo quality, made in Japan — precision optical construction for consistent, high-efficiency NIR/SWIR transmission and long service life
- Catalog number 378-827-16
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Technical Specifications
| Catalog Number | 378-827-16 |
| Magnification | 20× |
| Numerical Aperture (NA) | 0.40 |
| Immersion Medium | Dry (air) |
| Working Distance | 20mm (Long Working Distance) |
| Spectral Range | 480–1800nm (NIR + SWIR) |
| Cover Glass Correction | Yes — LCD / cover glass corrected |
| Optical Design | LCD Plan Apo NIR (Plan Apochromat, cover glass corrected, NIR/SWIR) |
| Correction | Infinity-corrected (brightfield) |
| Thread / Mount | M26 |
| Compatible Systems | Mitutoyo FS series; other infinity-corrected M26 systems |
| Country of Origin | Japan |
| SKU | 378-827-16 |
Microscope Compatibility
Typical Applications
LCD and flat panel display inspection at NIR/SWIR wavelengths through protective glass substrates
NIR/SWIR imaging of encapsulated or cover-glass-protected specimens at 20×
InGaAs camera imaging through cover glass requiring SWIR transmission to 1800nm
Raman spectroscopy through cover glass with NIR/SWIR excitation lasers
Silicon wafer inspection through protective glass layers at NIR wavelengths
Any NIR/SWIR application at 20× where a glass cover layer is present between objective and specimen
