Mitutoyo 378-821-16 LCD Plan Apo NIR 20X(t0.7) Objective for bright-field observation in near-infrared range with cover glass compensation

The LCD Plan Apo NIR 20X (t0.7) is a precision plan apochromat objective designed for bright field inspection and laser-based repair applications through 0.7 mm or 1.1 mm LCD cover glass (BK-7). With wavelength correction from the visible spectrum up to near-infrared (480–1800 nm), it is ideally suited for NIR inspection, semiconductor analysis, and laser processing environments.

Featuring an extended 20.24 mm working distance through 0.7 mm glass, this objective provides excellent clearance while maintaining strong optical performance. Its infinity-corrected plan apochromat design ensures flat-field imaging and precise chromatic correction across the visible-to-NIR wavelength range.

Dedicated glass thickness compensation ensures optimal image quality when observing through specified LCD substrates. The objective is fully compatible with NIR-sensitive imaging systems and laser-based applications.

Key Features

Suitable for bright field inspection and laser-based repair applications

Designed for use through 0.7 mm or 1.1 mm LCD cover glass (BK-7)

High-quality Plan Apochromat optical design

Wavelength correction from 480–1800 nm (Visible to Near-Infrared)

Long working distance design

Glass thickness compensated

Infinity corrected

Specifications

Model: LCD Plan Apo NIR 20X (t0.7)

Magnification: 20x

Glass thickness correction: t0.7 mm BK-7

Working distance (through glass): 20.24 mm

Working distance (in air): 20 mm

Numerical Aperture (N.A.): 0.40

Corrected wavelength range: 480–1800 nm

Resolving power: 0.7 µm

Depth of focus: 1.7 µm

Field of view (ø24 mm eyepiece): ø1.2 mm

Field of view (1/2” camera chip): 0.24 × 0.32 mm

Spectral range: Near-Infrared (NIR)

Observation mode: Brightfield

Glass compensation: Yes

High Resolution: No

Laser applications: Yes

Mass: 305 g