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Mitutoyo 378-821-16 | LCD Plan Apo NIR 20x (t0.7) Objective | N.A. 0.40, WD 20.24 mm
The 378-821-16 is the LCD Plan Apo NIR 20x (t0.7) objective, a 20x lens with numerical aperture 0.40 and a working distance of 20.24 mm through glass (20 mm in air). Cover-glass correction lets it look through LCD glass in the near-infrared for bright-field inspection and laser-based repair.
Key features
- Resolving power 0.7 µm; depth of field 1.7 µm
- Cover-glass thickness t0.7 BK-7 mm
- Corrected wavelength range 480-1800 nm
- Field of view ø1.2 mm with a ø24 mm eyepiece; 0.24 x 0.32 mm on a 1/2-inch camera chip
- Focal distance 10 mm
- Mass 305 g
- Specifications
- Downloads
| Part Number | 378-821-16 |
| Brand | Mitutoyo |
| Magnification | 20x |
| Cover Glass Thickness | t0.7 BK-7 mm |
| Numerical Aperture | 0.40 |
| Working Distance | 20.24 mm (through glass); 20 mm (in air) |
| Corrected Wavelength | 480-1800 nm |
| Correction | Infinite |
| Focal Distance | 10 mm |
| Resolving Power | 0.7 µm |
| Depth of Field | 1.7 µm |
| Field of View (ø24 mm eyepiece) | ø1.2 mm |
| Field of View (1/2-inch camera) | 0.24 x 0.32 mm |
| Spectral Range | NIR |
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